X-Git-Url: http://git.pld-linux.org/?a=blobdiff_plain;f=kernel-aufs5.patch;h=9827e5c9e3b7a649fc14051c3bebd0be6696acc7;hb=d27ab633e92338fec1ed18d5338747efdfa7f1d1;hp=4d2cdedc448ff823fc93177cd5b6693d2924cb4c;hpb=f24b0dddc5f39054fa11ccc7aebffb91d2d224e4;p=packages%2Fkernel.git diff --git a/kernel-aufs5.patch b/kernel-aufs5.patch index 4d2cdedc..9827e5c9 100644 --- a/kernel-aufs5.patch +++ b/kernel-aufs5.patch @@ -2,10 +2,10 @@ SPDX-License-Identifier: GPL-2.0 aufs5.x-rcN kbuild patch diff --git a/fs/Kconfig b/fs/Kconfig -index f08fbbfafd9a0..1c597cddc351c 100644 +index 5976eb33535f..7dba4acf10ce 100644 --- a/fs/Kconfig +++ b/fs/Kconfig -@@ -267,6 +267,7 @@ source "fs/sysv/Kconfig" +@@ -320,6 +320,7 @@ source "fs/sysv/Kconfig" source "fs/ufs/Kconfig" source "fs/erofs/Kconfig" source "fs/vboxsf/Kconfig" @@ -14,10 +14,10 @@ index f08fbbfafd9a0..1c597cddc351c 100644 endif # MISC_FILESYSTEMS diff --git a/fs/Makefile b/fs/Makefile -index 2ce5112b02c86..d9b4a51985538 100644 +index 208a74e0b00e..57d47a0762e0 100644 --- a/fs/Makefile +++ b/fs/Makefile -@@ -136,3 +136,4 @@ obj-$(CONFIG_EFIVAR_FS) += efivarfs/ +@@ -140,3 +140,4 @@ obj-$(CONFIG_EFIVAR_FS) += efivarfs/ obj-$(CONFIG_EROFS_FS) += erofs/ obj-$(CONFIG_VBOXSF_FS) += vboxsf/ obj-$(CONFIG_ZONEFS_FS) += zonefs/ @@ -26,35 +26,35 @@ SPDX-License-Identifier: GPL-2.0 aufs5.x-rcN base patch diff --git a/MAINTAINERS b/MAINTAINERS -index 50659d76976b7..80f67140e4f70 100644 +index 66bffb24a348..9dc7cad5fa1e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS -@@ -2946,6 +2946,19 @@ F: include/linux/audit.h - F: include/uapi/linux/audit.h +@@ -3355,6 +3355,19 @@ F: include/uapi/linux/audit.h F: kernel/audit* + F: lib/*audit.c +AUFS (advanced multi layered unification filesystem) FILESYSTEM +M: "J. R. Okajima" +L: aufs-users@lists.sourceforge.net (members only) +L: linux-unionfs@vger.kernel.org ++S: Supported +W: http://aufs.sourceforge.net +T: git://github.com/sfjro/aufs4-linux.git -+S: Supported -+F: Documentation/filesystems/aufs/ +F: Documentation/ABI/testing/debugfs-aufs +F: Documentation/ABI/testing/sysfs-aufs ++F: Documentation/filesystems/aufs/ +F: fs/aufs/ +F: include/uapi/linux/aufs_type.h + AUXILIARY DISPLAY DRIVERS - M: Miguel Ojeda Sandonis + M: Miguel Ojeda S: Maintained diff --git a/drivers/block/loop.c b/drivers/block/loop.c -index da693e6a834e5..0479902a0cd50 100644 +index 084f9b8a0ba3..a705173cf452 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c -@@ -753,6 +753,24 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, - return error; +@@ -645,6 +645,24 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, + goto done; } +/* @@ -79,10 +79,10 @@ index da693e6a834e5..0479902a0cd50 100644 static ssize_t loop_attr_show(struct device *dev, char *page, diff --git a/fs/dcache.c b/fs/dcache.c -index b280e07e162b1..046000653e4d8 100644 +index 93f4f5ee07bf..cddcf2e44930 100644 --- a/fs/dcache.c +++ b/fs/dcache.c -@@ -1266,7 +1266,7 @@ enum d_walk_ret { +@@ -1345,7 +1345,7 @@ enum d_walk_ret { * * The @enter() callbacks are called with d_lock held. */ @@ -92,10 +92,10 @@ index b280e07e162b1..046000653e4d8 100644 { struct dentry *this_parent; diff --git a/fs/fcntl.c b/fs/fcntl.c -index 2e4c0fa2074b0..0b28a37f7e505 100644 +index 34a3faa4886d..68457c0e1e6c 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c -@@ -32,7 +32,7 @@ +@@ -33,7 +33,7 @@ #define SETFL_MASK (O_APPEND | O_NONBLOCK | O_NDELAY | O_DIRECT | O_NOATIME) @@ -113,24 +113,11 @@ index 2e4c0fa2074b0..0b28a37f7e505 100644 if (error) return error; -diff --git a/fs/inode.c b/fs/inode.c -index 93d9252a00ab4..7700c5e4783b9 100644 ---- a/fs/inode.c -+++ b/fs/inode.c -@@ -1688,7 +1688,7 @@ EXPORT_SYMBOL(generic_update_time); - * This does the actual work of updating an inodes time or version. Must have - * had called mnt_want_write() before calling this. - */ --static int update_time(struct inode *inode, struct timespec64 *time, int flags) -+int update_time(struct inode *inode, struct timespec64 *time, int flags) - { - if (inode->i_op->update_time) - return inode->i_op->update_time(inode, time, flags); diff --git a/fs/namespace.c b/fs/namespace.c -index a28e4db075ede..12e725e34c6ca 100644 +index e6a7e769d25d..e0aa17f8c802 100644 --- a/fs/namespace.c +++ b/fs/namespace.c -@@ -776,6 +776,12 @@ static inline int check_mnt(struct mount *mnt) +@@ -852,6 +852,12 @@ static inline int check_mnt(struct mount *mnt) return mnt->mnt_ns == current->nsproxy->mnt_ns; } @@ -143,44 +130,11 @@ index a28e4db075ede..12e725e34c6ca 100644 /* * vfsmount lock must be held for write */ -diff --git a/fs/read_write.c b/fs/read_write.c -index bbfa9b12b15eb..5d684d7d29207 100644 ---- a/fs/read_write.c -+++ b/fs/read_write.c -@@ -499,6 +499,28 @@ static ssize_t __vfs_write(struct file *file, const char __user *p, - return ret; - } - -+vfs_readf_t vfs_readf(struct file *file) -+{ -+ const struct file_operations *fop = file->f_op; -+ -+ if (fop->read) -+ return fop->read; -+ if (fop->read_iter) -+ return new_sync_read; -+ return ERR_PTR(-ENOSYS); /* doesn't have ->read(|_iter)() op */ -+} -+ -+vfs_writef_t vfs_writef(struct file *file) -+{ -+ const struct file_operations *fop = file->f_op; -+ -+ if (fop->write) -+ return fop->write; -+ if (fop->write_iter) -+ return new_sync_write; -+ return ERR_PTR(-ENOSYS); /* doesn't have ->write(|_iter)() op */ -+} -+ - /* caller is responsible for file_start_write/file_end_write */ - ssize_t __kernel_write(struct file *file, const void *buf, size_t count, loff_t *pos) - { diff --git a/fs/splice.c b/fs/splice.c -index 4e53efbd621db..9f230ee854e20 100644 +index 047b79db8eb5..a21caa5c54c8 100644 --- a/fs/splice.c +++ b/fs/splice.c -@@ -849,8 +849,8 @@ EXPORT_SYMBOL(generic_splice_sendpage); +@@ -759,8 +759,8 @@ static int warn_unsupported(struct file *file, const char *op) /* * Attempt to initiate a splice from pipe to file. */ @@ -189,9 +143,9 @@ index 4e53efbd621db..9f230ee854e20 100644 +long do_splice_from(struct pipe_inode_info *pipe, struct file *out, + loff_t *ppos, size_t len, unsigned int flags) { - ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, - loff_t *, size_t, unsigned int); -@@ -866,9 +866,9 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out, + if (unlikely(!out->f_op->splice_write)) + return warn_unsupported(out, "write"); +@@ -770,9 +770,9 @@ static long do_splice_from(struct pipe_inode_info *pipe, struct file *out, /* * Attempt to initiate a splice from a file to a pipe. */ @@ -202,26 +156,13 @@ index 4e53efbd621db..9f230ee854e20 100644 + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) { - ssize_t (*splice_read)(struct file *, loff_t *, - struct pipe_inode_info *, size_t, unsigned int); -diff --git a/fs/sync.c b/fs/sync.c -index 4d1ff010bc5af..457f4e4a5cc1f 100644 ---- a/fs/sync.c -+++ b/fs/sync.c -@@ -28,7 +28,7 @@ - * wait == 1 case since in that case write_inode() functions do - * sync_dirty_buffer() and thus effectively write one block at a time. - */ --static int __sync_filesystem(struct super_block *sb, int wait) -+int __sync_filesystem(struct super_block *sb, int wait) - { - if (wait) - sync_inodes_sb(sb); + unsigned int p_space; + int ret; diff --git a/include/linux/fs.h b/include/linux/fs.h -index 45cc10cdf6ddd..916efd7e612b3 100644 +index 9ad5e3520fae..f5aed17b2ce2 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h -@@ -1355,6 +1355,7 @@ extern void fasync_free(struct fasync_struct *); +@@ -1348,6 +1348,7 @@ extern void fasync_free(struct fasync_struct *); /* can be called from interrupts */ extern void kill_fasync(struct fasync_struct **, int, int); @@ -229,7 +170,7 @@ index 45cc10cdf6ddd..916efd7e612b3 100644 extern void __f_setown(struct file *filp, struct pid *, enum pid_type, int force); extern int f_setown(struct file *filp, unsigned long arg, int force); extern void f_delown(struct file *filp); -@@ -1847,6 +1848,7 @@ struct file_operations { +@@ -1986,6 +1987,7 @@ struct file_operations { ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int); unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long); int (*check_flags)(int); @@ -237,20 +178,7 @@ index 45cc10cdf6ddd..916efd7e612b3 100644 int (*flock) (struct file *, int, struct file_lock *); ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int); ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int); -@@ -1917,6 +1919,12 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, - struct iovec *fast_pointer, - struct iovec **ret_pointer); - -+typedef ssize_t (*vfs_readf_t)(struct file *, char __user *, size_t, loff_t *); -+typedef ssize_t (*vfs_writef_t)(struct file *, const char __user *, size_t, -+ loff_t *); -+vfs_readf_t vfs_readf(struct file *file); -+vfs_writef_t vfs_writef(struct file *file); -+ - extern ssize_t vfs_read(struct file *, char __user *, size_t, loff_t *); - extern ssize_t vfs_write(struct file *, const char __user *, size_t, loff_t *); - extern ssize_t vfs_readv(struct file *, const struct iovec __user *, -@@ -2349,6 +2357,7 @@ extern int current_umask(void); +@@ -2483,6 +2485,7 @@ extern int current_umask(void); extern void ihold(struct inode * inode); extern void iput(struct inode *); extern int generic_update_time(struct inode *, struct timespec64 *, int); @@ -258,19 +186,19 @@ index 45cc10cdf6ddd..916efd7e612b3 100644 /* /sys/fs */ extern struct kobject *fs_kobj; -@@ -2633,6 +2642,7 @@ static inline bool sb_is_blkdev_sb(struct super_block *sb) - return false; +@@ -2663,6 +2666,7 @@ static inline bool sb_is_blkdev_sb(struct super_block *sb) } - #endif + + void emergency_thaw_all(void); +extern int __sync_filesystem(struct super_block *, int); extern int sync_filesystem(struct super_block *); extern const struct file_operations def_blk_fops; extern const struct file_operations def_chr_fops; diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h -index 206774ac69460..e5eda5226fbc7 100644 +index b6829b970093..af63df9ba503 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h -@@ -376,6 +376,8 @@ static inline int lockdep_match_key(struct lockdep_map *lock, +@@ -244,6 +244,8 @@ static inline int lockdep_match_key(struct lockdep_map *lock, return lock->key == key; } @@ -279,19 +207,11 @@ index 206774ac69460..e5eda5226fbc7 100644 /* * Acquire a lock. * -@@ -521,6 +523,7 @@ struct lockdep_map { }; - - #define lockdep_depth(tsk) (0) - -+#define lockdep_is_held(lock) (1) - #define lockdep_is_held_type(l, r) (1) - - #define lockdep_assert_held(l) do { (void)(l); } while (0) diff --git a/include/linux/mnt_namespace.h b/include/linux/mnt_namespace.h -index 35942084cd40d..24f5fd1a789de 100644 +index 8f882f5881e8..6b9808f09843 100644 --- a/include/linux/mnt_namespace.h +++ b/include/linux/mnt_namespace.h -@@ -6,12 +6,15 @@ +@@ -7,12 +7,15 @@ struct mnt_namespace; struct fs_struct; struct user_namespace; struct ns_common; @@ -308,10 +228,10 @@ index 35942084cd40d..24f5fd1a789de 100644 extern const struct file_operations proc_mountinfo_operations; extern const struct file_operations proc_mountstats_operations; diff --git a/include/linux/splice.h b/include/linux/splice.h -index ebbbfea48aa0b..d68d574250283 100644 +index a55179fd60fc..8e21c53cf883 100644 --- a/include/linux/splice.h +++ b/include/linux/splice.h -@@ -90,4 +90,10 @@ extern void splice_shrink_spd(struct splice_pipe_desc *); +@@ -93,4 +93,10 @@ extern void splice_shrink_spd(struct splice_pipe_desc *); extern const struct pipe_buf_operations page_cache_pipe_buf_ops; extern const struct pipe_buf_operations default_pipe_buf_ops; @@ -323,19 +243,19 @@ index ebbbfea48aa0b..d68d574250283 100644 + unsigned int flags); #endif diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c -index ac10db66cc63f..837a3358e77ca 100644 +index f06b91ca6482..dedf7da3dd4a 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c -@@ -169,7 +169,7 @@ static +@@ -217,7 +217,7 @@ unsigned long max_lock_class_idx; struct lock_class lock_classes[MAX_LOCKDEP_KEYS]; - static DECLARE_BITMAP(lock_classes_in_use, MAX_LOCKDEP_KEYS); + DECLARE_BITMAP(lock_classes_in_use, MAX_LOCKDEP_KEYS); -static inline struct lock_class *hlock_class(struct held_lock *hlock) +inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock) { unsigned int class_idx = hlock->class_idx; -@@ -190,6 +190,7 @@ static inline struct lock_class *hlock_class(struct held_lock *hlock) +@@ -238,6 +238,7 @@ static inline struct lock_class *hlock_class(struct held_lock *hlock) */ return lock_classes + class_idx; } @@ -347,10 +267,10 @@ SPDX-License-Identifier: GPL-2.0 aufs5.x-rcN mmap patch diff --git a/fs/proc/base.c b/fs/proc/base.c -index eb2255e95f62b..92f6062423c0c 100644 +index 8dfa36a99c74..548deeffe7d7 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c -@@ -2162,7 +2162,7 @@ static int map_files_get_link(struct dentry *dentry, struct path *path) +@@ -2190,7 +2190,7 @@ static int map_files_get_link(struct dentry *dentry, struct path *path) rc = -ENOENT; vma = find_exact_vma(mm, vm_start, vm_end); if (vma && vma->vm_file) { @@ -360,10 +280,10 @@ index eb2255e95f62b..92f6062423c0c 100644 rc = 0; } diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c -index 14c2badb8fd93..65afe5287e43e 100644 +index 13452b32e2bd..38acccfef9d4 100644 --- a/fs/proc/nommu.c +++ b/fs/proc/nommu.c -@@ -41,7 +41,10 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region) +@@ -40,7 +40,10 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region) file = region->vm_file; if (file) { @@ -376,10 +296,10 @@ index 14c2badb8fd93..65afe5287e43e 100644 ino = inode->i_ino; } diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c -index 8d382d4ec0672..93a768f754c91 100644 +index 2d04e3470d4c..f57a3bed280a 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c -@@ -280,7 +280,10 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma) +@@ -281,7 +281,10 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma) const char *name = NULL; if (file) { @@ -391,7 +311,7 @@ index 8d382d4ec0672..93a768f754c91 100644 dev = inode->i_sb->s_dev; ino = inode->i_ino; pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT; -@@ -1787,7 +1790,7 @@ static int show_numa_map(struct seq_file *m, void *v) +@@ -1908,7 +1911,7 @@ static int show_numa_map(struct seq_file *m, void *v) struct proc_maps_private *proc_priv = &numa_priv->proc_maps; struct vm_area_struct *vma = v; struct numa_maps *md = &numa_priv->md; @@ -401,7 +321,7 @@ index 8d382d4ec0672..93a768f754c91 100644 struct mempolicy *pol; char buffer[64]; diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c -index 7907e6419e572..d17209cf52bc3 100644 +index a6d21fc0033c..02c2de31196e 100644 --- a/fs/proc/task_nommu.c +++ b/fs/proc/task_nommu.c @@ -155,7 +155,10 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma) @@ -417,13 +337,14 @@ index 7907e6419e572..d17209cf52bc3 100644 ino = inode->i_ino; pgoff = (loff_t)vma->vm_pgoff << PAGE_SHIFT; diff --git a/include/linux/mm.h b/include/linux/mm.h -index f3fe7371855ce..a5b9751a5b331 100644 +index cf3d0d673f6b..6b3c1bdf9cde 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h -@@ -1688,6 +1688,28 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping, +@@ -1905,6 +1905,43 @@ static inline void unmap_shared_mapping_range(struct address_space *mapping, unmap_mapping_range(mapping, holebegin, holelen, 0); } ++#if IS_ENABLED(CONFIG_AUFS_FS) +extern void vma_do_file_update_time(struct vm_area_struct *, const char[], int); +extern struct file *vma_do_pr_or_file(struct vm_area_struct *, const char[], + int); @@ -445,74 +366,88 @@ index f3fe7371855ce..a5b9751a5b331 100644 + __LINE__) +#define vmr_fput(region) vmr_do_fput(region, __func__, __LINE__) +#endif /* !CONFIG_MMU */ ++ ++#else ++ ++#define vma_file_update_time(vma) file_update_time((vma)->vm_file) ++#define vma_pr_or_file(vma) (vma)->vm_file ++#define vma_get_file(vma) get_file((vma)->vm_file) ++#define vma_fput(vma) fput((vma)->vm_file) ++ ++#ifndef CONFIG_MMU ++#define vmr_pr_or_file(region) (region)->vm_file ++#define vmr_fput(region) fput((region)->vm_file) ++#endif /* !CONFIG_MMU */ ++ ++#endif /* CONFIG_AUFS_FS */ + extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, unsigned int gup_flags); extern int access_remote_vm(struct mm_struct *mm, unsigned long addr, diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h -index 4aba6c0c2ba80..974802987f69d 100644 +index c29ab4c0cd5c..51753b926421 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h -@@ -272,6 +272,7 @@ struct vm_region { +@@ -367,6 +367,9 @@ struct vm_region { unsigned long vm_top; /* region allocated to here */ unsigned long vm_pgoff; /* the offset in vm_file corresponding to vm_start */ struct file *vm_file; /* the backing file or NULL */ ++#if IS_ENABLED(CONFIG_AUFS_FS) + struct file *vm_prfile; /* the virtual backing file or NULL */ ++#endif int vm_usage; /* region usage count (access under nommu_region_sem) */ bool vm_icache_flushed : 1; /* true if the icache has been flushed for -@@ -351,6 +352,7 @@ struct vm_area_struct { +@@ -463,6 +466,9 @@ struct vm_area_struct { unsigned long vm_pgoff; /* Offset (within vm_file) in PAGE_SIZE units */ struct file * vm_file; /* File we map to (can be NULL). */ ++#if IS_ENABLED(CONFIG_AUFS_FS) + struct file *vm_prfile; /* shadow of vm_file */ ++#endif void * vm_private_data; /* was vm_pte (shared mem) */ #ifdef CONFIG_SWAP diff --git a/kernel/fork.c b/kernel/fork.c -index 48ed22774efaa..d7439388c1c52 100644 +index 9d44f2d46c69..089b21708b9a 100644 --- a/kernel/fork.c +++ b/kernel/fork.c -@@ -568,7 +568,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, - struct inode *inode = file_inode(file); +@@ -662,7 +662,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, + if (file) { struct address_space *mapping = file->f_mapping; - get_file(file); + vma_get_file(tmp); - if (tmp->vm_flags & VM_DENYWRITE) - atomic_dec(&inode->i_writecount); i_mmap_lock_write(mapping); + if (tmp->vm_flags & VM_SHARED) + mapping_allow_writable(mapping); diff --git a/mm/Makefile b/mm/Makefile -index fccd3756b25f0..51485ceec650a 100644 +index 6f9ffa968a1a..f1e338fa3d10 100644 --- a/mm/Makefile +++ b/mm/Makefile -@@ -44,7 +44,7 @@ obj-y := filemap.o mempool.o oom_kill.o fadvise.o \ - mm_init.o mmu_context.o percpu.o slab_common.o \ - compaction.o vmacache.o \ - interval_tree.o list_lru.o workingset.o \ -- debug.o gup.o $(mmu-y) -+ prfile.o debug.o gup.o $(mmu-y) - - # Give 'page_alloc' its own module-parameter namespace - page-alloc-y := page_alloc.o +@@ -133,3 +133,4 @@ obj-$(CONFIG_PAGE_REPORTING) += page_reporting.o + obj-$(CONFIG_IO_MAPPING) += io-mapping.o + obj-$(CONFIG_HAVE_BOOTMEM_INFO_NODE) += bootmem_info.o + obj-$(CONFIG_GENERIC_IOREMAP) += ioremap.o ++obj-$(CONFIG_AUFS_FS:m=y) += prfile.o diff --git a/mm/filemap.c b/mm/filemap.c -index 23a051a7ef0fb..e2fe9132feb21 100644 +index ffdfbc8b0e3c..2932f7020bfe 100644 --- a/mm/filemap.c +++ b/mm/filemap.c -@@ -2660,7 +2660,7 @@ vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf) +@@ -3431,7 +3431,7 @@ vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf) vm_fault_t ret = VM_FAULT_LOCKED; - sb_start_pagefault(inode->i_sb); + sb_start_pagefault(mapping->host->i_sb); - file_update_time(vmf->vma->vm_file); + vma_file_update_time(vmf->vma); - lock_page(page); - if (page->mapping != inode->i_mapping) { - unlock_page(page); + folio_lock(folio); + if (folio->mapping != mapping) { + folio_unlock(folio); diff --git a/mm/mmap.c b/mm/mmap.c -index f609e9ec4a253..d554b349c653c 100644 +index 61e6135c54ef..9a3b117076a8 100644 --- a/mm/mmap.c +++ b/mm/mmap.c -@@ -179,7 +179,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma) +@@ -189,7 +189,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma) if (vma->vm_ops && vma->vm_ops->close) vma->vm_ops->close(vma); if (vma->vm_file) @@ -521,7 +456,7 @@ index f609e9ec4a253..d554b349c653c 100644 mpol_put(vma_policy(vma)); vm_area_free(vma); return next; -@@ -910,7 +910,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, +@@ -958,7 +958,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, if (remove_next) { if (file) { uprobe_munmap(next, next->vm_start, next->vm_end); @@ -530,17 +465,16 @@ index f609e9ec4a253..d554b349c653c 100644 } if (next->anon_vma) anon_vma_merge(vma, next); -@@ -1831,8 +1831,8 @@ unsigned long mmap_region(struct file *file, unsigned long addr, +@@ -1889,7 +1889,7 @@ unsigned long mmap_region(struct file *file, unsigned long addr, return addr; unmap_and_free_vma: +- fput(vma->vm_file); + vma_fput(vma); vma->vm_file = NULL; -- fput(file); /* Undo any partial mapping done by a device driver. */ - unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end); -@@ -2683,7 +2683,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, +@@ -2751,7 +2751,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, goto out_free_mpol; if (new->vm_file) @@ -549,7 +483,7 @@ index f609e9ec4a253..d554b349c653c 100644 if (new->vm_ops && new->vm_ops->open) new->vm_ops->open(new); -@@ -2702,7 +2702,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, +@@ -2770,7 +2770,7 @@ int __split_vma(struct mm_struct *mm, struct vm_area_struct *vma, if (new->vm_ops && new->vm_ops->close) new->vm_ops->close(new); if (new->vm_file) @@ -558,25 +492,26 @@ index f609e9ec4a253..d554b349c653c 100644 unlink_anon_vmas(new); out_free_mpol: mpol_put(vma_policy(new)); -@@ -2894,7 +2894,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, - struct vm_area_struct *vma; +@@ -2943,6 +2943,9 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, unsigned long populate = 0; unsigned long ret = -EINVAL; -- struct file *file; -+ struct file *file, *prfile; + struct file *file; ++#if IS_ENABLED(CONFIG_AUFS_FS) ++ struct file *prfile; ++#endif pr_warn_once("%s (%d) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst.\n", current->comm, current->pid); -@@ -2969,10 +2969,27 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, - } - } +@@ -2998,10 +3001,34 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, + if (vma->vm_flags & VM_LOCKED) + flags |= MAP_LOCKED; -- file = get_file(vma->vm_file); ++#if IS_ENABLED(CONFIG_AUFS_FS) + vma_get_file(vma); + file = vma->vm_file; + prfile = vma->vm_prfile; - ret = do_mmap_pgoff(vma->vm_file, start, size, - prot, flags, pgoff, &populate, NULL); ++ ret = do_mmap(vma->vm_file, start, size, ++ prot, flags, pgoff, &populate, NULL); + if (!IS_ERR_VALUE(ret) && file && prfile) { + struct vm_area_struct *new_vma; + @@ -590,13 +525,19 @@ index f609e9ec4a253..d554b349c653c 100644 + * two fput()s instead of vma_fput(vma), + * coz vma may not be available anymore. + */ - fput(file); ++ fput(file); + if (prfile) + fput(prfile); ++#else + file = get_file(vma->vm_file); + ret = do_mmap(vma->vm_file, start, size, + prot, flags, pgoff, &populate, NULL); + fput(file); ++#endif /* CONFIG_AUFS_FS */ out: - up_write(&mm->mmap_sem); + mmap_write_unlock(mm); if (populate) -@@ -3263,7 +3280,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap, +@@ -3275,7 +3302,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap, if (anon_vma_clone(new_vma, vma)) goto out_free_mempol; if (new_vma->vm_file) @@ -606,10 +547,10 @@ index f609e9ec4a253..d554b349c653c 100644 new_vma->vm_ops->open(new_vma); vma_link(mm, new_vma, prev, rb_link, rb_parent); diff --git a/mm/nommu.c b/mm/nommu.c -index 318df4e236c99..7f051e86ea1dd 100644 +index 9d7afc2d959e..917851d5b7c6 100644 --- a/mm/nommu.c +++ b/mm/nommu.c -@@ -567,7 +567,7 @@ static void __put_nommu_region(struct vm_region *region) +@@ -524,7 +524,7 @@ static void __put_nommu_region(struct vm_region *region) up_write(&nommu_region_sem); if (region->vm_file) @@ -618,7 +559,7 @@ index 318df4e236c99..7f051e86ea1dd 100644 /* IO memory and memory shared directly out of the pagecache * from ramfs/tmpfs mustn't be released here */ -@@ -699,7 +699,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma) +@@ -656,7 +656,7 @@ static void delete_vma(struct mm_struct *mm, struct vm_area_struct *vma) if (vma->vm_ops && vma->vm_ops->close) vma->vm_ops->close(vma); if (vma->vm_file) @@ -627,7 +568,7 @@ index 318df4e236c99..7f051e86ea1dd 100644 put_nommu_region(vma->vm_region); vm_area_free(vma); } -@@ -1222,7 +1222,7 @@ unsigned long do_mmap(struct file *file, +@@ -1176,7 +1176,7 @@ unsigned long do_mmap(struct file *file, goto error_just_free; } } @@ -636,7 +577,7 @@ index 318df4e236c99..7f051e86ea1dd 100644 kmem_cache_free(vm_region_jar, region); region = pregion; result = start; -@@ -1299,10 +1299,10 @@ unsigned long do_mmap(struct file *file, +@@ -1253,10 +1253,10 @@ unsigned long do_mmap(struct file *file, up_write(&nommu_region_sem); error: if (region->vm_file) @@ -651,7 +592,7 @@ index 318df4e236c99..7f051e86ea1dd 100644 diff --git a/mm/prfile.c b/mm/prfile.c new file mode 100644 -index 0000000000000..00d51187c3250 +index 000000000000..511543ab1b41 --- /dev/null +++ b/mm/prfile.c @@ -0,0 +1,86 @@ @@ -663,7 +604,7 @@ index 0000000000000..00d51187c3250 + * + * See Documentation/filesystems/aufs/design/06mmap.txt + * -+ * Copyright (c) 2014-2020 Junjro R. Okajima ++ * Copyright (c) 2014-2021 Junjro R. Okajima + * Copyright (c) 2014 Ian Campbell + */ + @@ -745,10 +686,10 @@ SPDX-License-Identifier: GPL-2.0 aufs5.x-rcN standalone patch diff --git a/fs/dcache.c b/fs/dcache.c -index 046000653e4d8..15aa871d1b450 100644 +index cddcf2e44930..8e24a158ef4f 100644 --- a/fs/dcache.c +++ b/fs/dcache.c -@@ -1371,6 +1371,7 @@ void d_walk(struct dentry *parent, void *data, +@@ -1450,6 +1450,7 @@ void d_walk(struct dentry *parent, void *data, seq = 1; goto again; } @@ -756,7 +697,7 @@ index 046000653e4d8..15aa871d1b450 100644 struct check_mount { struct vfsmount *mnt; -@@ -2916,6 +2917,7 @@ void d_exchange(struct dentry *dentry1, struct dentry *dentry2) +@@ -2996,6 +2997,7 @@ void d_exchange(struct dentry *dentry1, struct dentry *dentry2) write_sequnlock(&rename_lock); } @@ -765,10 +706,10 @@ index 046000653e4d8..15aa871d1b450 100644 /** * d_ancestor - search for an ancestor diff --git a/fs/exec.c b/fs/exec.c -index 2c465119affcc..239bcb8906e78 100644 +index 0989fb8472a1..040741a7fc1a 100644 --- a/fs/exec.c +++ b/fs/exec.c -@@ -109,6 +109,7 @@ bool path_noexec(const struct path *path) +@@ -111,6 +111,7 @@ bool path_noexec(const struct path *path) return (path->mnt->mnt_flags & MNT_NOEXEC) || (path->mnt->mnt_sb->s_iflags & SB_I_NOEXEC); } @@ -777,7 +718,7 @@ index 2c465119affcc..239bcb8906e78 100644 #ifdef CONFIG_USELIB /* diff --git a/fs/fcntl.c b/fs/fcntl.c -index 0b28a37f7e505..f2c90a416b751 100644 +index 68457c0e1e6c..f6affcbcea4f 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -85,6 +85,7 @@ int setfl(int fd, struct file *filp, unsigned long arg) @@ -789,10 +730,10 @@ index 0b28a37f7e505..f2c90a416b751 100644 static void f_modown(struct file *filp, struct pid *pid, enum pid_type type, int force) diff --git a/fs/file_table.c b/fs/file_table.c -index 30d55c9a1744a..34b9bbf4c5566 100644 +index 5424e3a8df5f..d2fe19f88894 100644 --- a/fs/file_table.c +++ b/fs/file_table.c -@@ -162,6 +162,7 @@ struct file *alloc_empty_file(int flags, const struct cred *cred) +@@ -198,6 +198,7 @@ struct file *alloc_empty_file(int flags, const struct cred *cred) } return ERR_PTR(-ENFILE); } @@ -800,31 +741,11 @@ index 30d55c9a1744a..34b9bbf4c5566 100644 /* * Variant of alloc_empty_file() that doesn't check and modify nr_files. -@@ -375,6 +376,7 @@ void __fput_sync(struct file *file) - } - - EXPORT_SYMBOL(fput); -+EXPORT_SYMBOL_GPL(__fput_sync); - - void __init files_init(void) - { -diff --git a/fs/inode.c b/fs/inode.c -index 7700c5e4783b9..6284b41fcf3f0 100644 ---- a/fs/inode.c -+++ b/fs/inode.c -@@ -1694,6 +1694,7 @@ int update_time(struct inode *inode, struct timespec64 *time, int flags) - return inode->i_op->update_time(inode, time, flags); - return generic_update_time(inode, time, flags); - } -+EXPORT_SYMBOL_GPL(update_time); - - /** - * touch_atime - update the access time diff --git a/fs/namespace.c b/fs/namespace.c -index 12e725e34c6ca..fa17b9d5926ba 100644 +index e0aa17f8c802..a8c5bed09874 100644 --- a/fs/namespace.c +++ b/fs/namespace.c -@@ -431,6 +431,7 @@ void __mnt_drop_write(struct vfsmount *mnt) +@@ -456,6 +456,7 @@ void __mnt_drop_write(struct vfsmount *mnt) mnt_dec_writers(real_mount(mnt)); preempt_enable(); } @@ -832,7 +753,7 @@ index 12e725e34c6ca..fa17b9d5926ba 100644 /** * mnt_drop_write - give up write access to a mount -@@ -781,6 +782,7 @@ int is_current_mnt_ns(struct vfsmount *mnt) +@@ -857,6 +858,7 @@ int is_current_mnt_ns(struct vfsmount *mnt) { return check_mnt(real_mount(mnt)); } @@ -840,7 +761,7 @@ index 12e725e34c6ca..fa17b9d5926ba 100644 /* * vfsmount lock must be held for write -@@ -1903,6 +1905,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg, +@@ -2060,6 +2062,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg, } return 0; } @@ -849,10 +770,10 @@ index 12e725e34c6ca..fa17b9d5926ba 100644 static void lock_mnt_tree(struct mount *mnt) { diff --git a/fs/notify/group.c b/fs/notify/group.c -index 133f723aca070..0b9f7f6d8390f 100644 +index 1de6631a3925..3008eb37a18d 100644 --- a/fs/notify/group.c +++ b/fs/notify/group.c -@@ -99,6 +99,7 @@ void fsnotify_get_group(struct fsnotify_group *group) +@@ -100,6 +100,7 @@ void fsnotify_get_group(struct fsnotify_group *group) { refcount_inc(&group->refcnt); } @@ -861,10 +782,10 @@ index 133f723aca070..0b9f7f6d8390f 100644 /* * Drop a reference to a group. Free it if it's through. diff --git a/fs/open.c b/fs/open.c -index 719b320ede52b..f88ce55c1c998 100644 +index 1d57fbde2feb..50d04ab40175 100644 --- a/fs/open.c +++ b/fs/open.c -@@ -65,6 +65,7 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs, +@@ -66,6 +66,7 @@ int do_truncate(struct user_namespace *mnt_userns, struct dentry *dentry, inode_unlock(dentry->d_inode); return ret; } @@ -873,35 +794,19 @@ index 719b320ede52b..f88ce55c1c998 100644 long vfs_truncate(const struct path *path, loff_t length) { diff --git a/fs/read_write.c b/fs/read_write.c -index 5d684d7d29207..6f61c0b6aa664 100644 +index e0777eefd846..5e4413802f73 100644 --- a/fs/read_write.c +++ b/fs/read_write.c -@@ -469,6 +469,7 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) - +@@ -489,6 +489,7 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) + inc_syscr(current); return ret; } +EXPORT_SYMBOL_GPL(vfs_read); static ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos) { -@@ -509,6 +510,7 @@ vfs_readf_t vfs_readf(struct file *file) - return new_sync_read; - return ERR_PTR(-ENOSYS); /* doesn't have ->read(|_iter)() op */ - } -+EXPORT_SYMBOL_GPL(vfs_readf); - - vfs_writef_t vfs_writef(struct file *file) - { -@@ -520,6 +522,7 @@ vfs_writef_t vfs_writef(struct file *file) - return new_sync_write; - return ERR_PTR(-ENOSYS); /* doesn't have ->write(|_iter)() op */ - } -+EXPORT_SYMBOL_GPL(vfs_writef); - - ssize_t __kernel_write(struct file *file, const void *buf, size_t count, loff_t *pos) - { -@@ -589,6 +592,7 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_ - +@@ -599,6 +600,7 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_ + file_end_write(file); return ret; } +EXPORT_SYMBOL_GPL(vfs_write); @@ -909,42 +814,30 @@ index 5d684d7d29207..6f61c0b6aa664 100644 /* file_ppos returns &file->f_pos or NULL if file is stream */ static inline loff_t *file_ppos(struct file *file) diff --git a/fs/splice.c b/fs/splice.c -index 9f230ee854e20..a6bd05004433c 100644 +index a21caa5c54c8..ccf9e1681eb7 100644 --- a/fs/splice.c +++ b/fs/splice.c -@@ -862,6 +862,7 @@ long do_splice_from(struct pipe_inode_info *pipe, struct file *out, - - return splice_write(pipe, out, ppos, len, flags); +@@ -766,6 +766,7 @@ long do_splice_from(struct pipe_inode_info *pipe, struct file *out, + return warn_unsupported(out, "write"); + return out->f_op->splice_write(pipe, out, ppos, len, flags); } +EXPORT_SYMBOL_GPL(do_splice_from); /* * Attempt to initiate a splice from a file to a pipe. -@@ -891,6 +892,7 @@ long do_splice_to(struct file *in, loff_t *ppos, - - return splice_read(in, ppos, pipe, len, flags); +@@ -795,6 +796,7 @@ long do_splice_to(struct file *in, loff_t *ppos, + return warn_unsupported(in, "read"); + return in->f_op->splice_read(in, ppos, pipe, len, flags); } +EXPORT_SYMBOL_GPL(do_splice_to); /** * splice_direct_to_actor - splices data directly between two non-pipes -diff --git a/fs/sync.c b/fs/sync.c -index 457f4e4a5cc1f..67c66358f3fe4 100644 ---- a/fs/sync.c -+++ b/fs/sync.c -@@ -39,6 +39,7 @@ int __sync_filesystem(struct super_block *sb, int wait) - sb->s_op->sync_fs(sb, wait); - return __sync_blockdev(sb->s_bdev, wait); - } -+EXPORT_SYMBOL_GPL(__sync_filesystem); - - /* - * Write out and wait upon all dirty data associated with this diff --git a/fs/xattr.c b/fs/xattr.c -index 91608d9bfc6aa..02d19ab3ba540 100644 +index e8dd03e4561e..fd922e39d42d 100644 --- a/fs/xattr.c +++ b/fs/xattr.c -@@ -296,6 +296,7 @@ vfs_getxattr_alloc(struct dentry *dentry, const char *name, char **xattr_value, +@@ -386,6 +386,7 @@ vfs_getxattr_alloc(struct user_namespace *mnt_userns, struct dentry *dentry, *xattr_value = value; return error; } @@ -953,10 +846,10 @@ index 91608d9bfc6aa..02d19ab3ba540 100644 ssize_t __vfs_getxattr(struct dentry *dentry, struct inode *inode, const char *name, diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c -index 837a3358e77ca..715ba9c1b91ae 100644 +index dedf7da3dd4a..2c74c70f4816 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c -@@ -190,6 +190,7 @@ inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock) +@@ -238,6 +238,7 @@ inline struct lock_class *lockdep_hlock_class(struct held_lock *hlock) */ return lock_classes + class_idx; } @@ -965,19 +858,19 @@ index 837a3358e77ca..715ba9c1b91ae 100644 #ifdef CONFIG_LOCK_STAT diff --git a/kernel/task_work.c b/kernel/task_work.c -index 825f28259a19a..b77593b29c1a5 100644 +index dff75bcde151..30b814618535 100644 --- a/kernel/task_work.c +++ b/kernel/task_work.c -@@ -126,3 +126,4 @@ void task_work_run(void) +@@ -180,3 +180,4 @@ void task_work_run(void) } while (work); } } +EXPORT_SYMBOL_GPL(task_work_run); diff --git a/security/security.c b/security/security.c -index 51de970fbb1ed..b21f1ffd90051 100644 +index 188b8f782220..6847a174a55f 100644 --- a/security/security.c +++ b/security/security.c -@@ -1087,6 +1087,7 @@ int security_path_rmdir(const struct path *dir, struct dentry *dentry) +@@ -1165,6 +1165,7 @@ int security_path_rmdir(const struct path *dir, struct dentry *dentry) return 0; return call_int_hook(path_rmdir, 0, dir, dentry); } @@ -985,7 +878,7 @@ index 51de970fbb1ed..b21f1ffd90051 100644 int security_path_unlink(const struct path *dir, struct dentry *dentry) { -@@ -1103,6 +1104,7 @@ int security_path_symlink(const struct path *dir, struct dentry *dentry, +@@ -1181,6 +1182,7 @@ int security_path_symlink(const struct path *dir, struct dentry *dentry, return 0; return call_int_hook(path_symlink, 0, dir, dentry, old_name); } @@ -993,7 +886,7 @@ index 51de970fbb1ed..b21f1ffd90051 100644 int security_path_link(struct dentry *old_dentry, const struct path *new_dir, struct dentry *new_dentry) -@@ -1111,6 +1113,7 @@ int security_path_link(struct dentry *old_dentry, const struct path *new_dir, +@@ -1189,6 +1191,7 @@ int security_path_link(struct dentry *old_dentry, const struct path *new_dir, return 0; return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); } @@ -1001,7 +894,7 @@ index 51de970fbb1ed..b21f1ffd90051 100644 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, const struct path *new_dir, struct dentry *new_dentry, -@@ -1138,6 +1141,7 @@ int security_path_truncate(const struct path *path) +@@ -1209,6 +1212,7 @@ int security_path_truncate(const struct path *path) return 0; return call_int_hook(path_truncate, 0, path); } @@ -1009,7 +902,7 @@ index 51de970fbb1ed..b21f1ffd90051 100644 int security_path_chmod(const struct path *path, umode_t mode) { -@@ -1145,6 +1149,7 @@ int security_path_chmod(const struct path *path, umode_t mode) +@@ -1216,6 +1220,7 @@ int security_path_chmod(const struct path *path, umode_t mode) return 0; return call_int_hook(path_chmod, 0, path, mode); } @@ -1017,7 +910,7 @@ index 51de970fbb1ed..b21f1ffd90051 100644 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) { -@@ -1152,6 +1157,7 @@ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) +@@ -1223,6 +1228,7 @@ int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) return 0; return call_int_hook(path_chown, 0, path, uid, gid); } @@ -1025,7 +918,7 @@ index 51de970fbb1ed..b21f1ffd90051 100644 int security_path_chroot(const struct path *path) { -@@ -1252,6 +1258,7 @@ int security_inode_permission(struct inode *inode, int mask) +@@ -1323,6 +1329,7 @@ int security_inode_permission(struct inode *inode, int mask) return 0; return call_int_hook(inode_permission, 0, inode, mask); } @@ -1033,7 +926,7 @@ index 51de970fbb1ed..b21f1ffd90051 100644 int security_inode_setattr(struct dentry *dentry, struct iattr *attr) { -@@ -1429,6 +1436,7 @@ int security_file_permission(struct file *file, int mask) +@@ -1520,6 +1527,7 @@ int security_file_permission(struct file *file, int mask) return fsnotify_perm(file, mask); } @@ -1043,7 +936,7 @@ index 51de970fbb1ed..b21f1ffd90051 100644 { diff -urN /usr/share/empty/Documentation/ABI/testing/debugfs-aufs linux/Documentation/ABI/testing/debugfs-aufs --- /usr/share/empty/Documentation/ABI/testing/debugfs-aufs 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/ABI/testing/debugfs-aufs 2019-07-11 15:42:14.455570938 +0200 ++++ linux/Documentation/ABI/testing/debugfs-aufs 2022-08-02 12:12:45.158975302 +0200 @@ -0,0 +1,55 @@ +What: /debug/aufs/si_/ +Date: March 2009 @@ -1075,7 +968,7 @@ diff -urN /usr/share/empty/Documentation/ABI/testing/debugfs-aufs linux/Document + When the aufs mount option 'noxino' is specified, it + will be empty. About XINO files, see the aufs manual. + -+What: /debug/aufs/si_/xi0, xi1 ... xiN and xiN-N ++What: /debug/aufs/si_/xi +Date: March 2009 +Contact: J. R. Okajima +Description: @@ -1102,7 +995,7 @@ diff -urN /usr/share/empty/Documentation/ABI/testing/debugfs-aufs linux/Document + will be empty. About XINO files, see the aufs manual. diff -urN /usr/share/empty/Documentation/ABI/testing/sysfs-aufs linux/Documentation/ABI/testing/sysfs-aufs --- /usr/share/empty/Documentation/ABI/testing/sysfs-aufs 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/ABI/testing/sysfs-aufs 2019-07-11 15:42:14.455570938 +0200 ++++ linux/Documentation/ABI/testing/sysfs-aufs 2022-08-02 12:12:45.158975302 +0200 @@ -0,0 +1,31 @@ +What: /sys/fs/aufs/si_/ +Date: March 2009 @@ -1112,14 +1005,14 @@ diff -urN /usr/share/empty/Documentation/ABI/testing/sysfs-aufs linux/Documentat + per aufs mount, where is a unique id generated + internally. + -+What: /sys/fs/aufs/si_/br0, br1 ... brN ++What: /sys/fs/aufs/si_/br +Date: March 2009 +Contact: J. R. Okajima +Description: + It shows the abolute path of a member directory (which + is called branch) in aufs, and its permission. + -+What: /sys/fs/aufs/si_/brid0, brid1 ... bridN ++What: /sys/fs/aufs/si_/brid +Date: July 2013 +Contact: J. R. Okajima +Description: @@ -1137,10 +1030,10 @@ diff -urN /usr/share/empty/Documentation/ABI/testing/sysfs-aufs linux/Documentat + will be empty. About XINO files, see the aufs manual. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/01intro.txt linux/Documentation/filesystems/aufs/design/01intro.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/01intro.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/01intro.txt 2020-01-27 10:57:18.162204582 +0100 ++++ linux/Documentation/filesystems/aufs/design/01intro.txt 2022-08-02 12:12:45.158975302 +0200 @@ -0,0 +1,171 @@ + -+# Copyright (C) 2005-2020 Junjiro R. Okajima ++# Copyright (C) 2005-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -1312,10 +1205,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/01intro.txt lin +about it. But currently I have implemented it in kernel space. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/02struct.txt linux/Documentation/filesystems/aufs/design/02struct.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/02struct.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/02struct.txt 2020-01-27 10:57:18.162204582 +0100 ++++ linux/Documentation/filesystems/aufs/design/02struct.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,258 @@ + -+# Copyright (C) 2005-2020 Junjiro R. Okajima ++# Copyright (C) 2005-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -1574,10 +1467,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/02struct.txt li +For this purpose, use "aumvdown" command in aufs-util.git. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/03atomic_open.txt linux/Documentation/filesystems/aufs/design/03atomic_open.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/03atomic_open.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/03atomic_open.txt 2020-01-27 10:57:18.162204582 +0100 ++++ linux/Documentation/filesystems/aufs/design/03atomic_open.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,85 @@ + -+# Copyright (C) 2015-2020 Junjiro R. Okajima ++# Copyright (C) 2015-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -1663,10 +1556,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/03atomic_open.t + be implemented in aufs, but not all I am afraid. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/03lookup.txt linux/Documentation/filesystems/aufs/design/03lookup.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/03lookup.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/03lookup.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/03lookup.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,113 @@ + -+# Copyright (C) 2005-2020 Junjiro R. Okajima ++# Copyright (C) 2005-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -1780,10 +1673,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/03lookup.txt li + by over-mounting something (or another method). diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/04branch.txt linux/Documentation/filesystems/aufs/design/04branch.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/04branch.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/04branch.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/04branch.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,74 @@ + -+# Copyright (C) 2005-2020 Junjiro R. Okajima ++# Copyright (C) 2005-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -1858,10 +1751,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/04branch.txt li + same named entry on the upper branch. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/05wbr_policy.txt linux/Documentation/filesystems/aufs/design/05wbr_policy.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/05wbr_policy.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/05wbr_policy.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/05wbr_policy.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,64 @@ + -+# Copyright (C) 2005-2020 Junjiro R. Okajima ++# Copyright (C) 2005-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -1926,7 +1819,7 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/05wbr_policy.tx + copyup policy. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.dot linux/Documentation/filesystems/aufs/design/06dirren.dot --- /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.dot 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/06dirren.dot 2019-07-11 15:42:14.458904362 +0200 ++++ linux/Documentation/filesystems/aufs/design/06dirren.dot 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,31 @@ + +// to view this graph, run dot(1) command in GRAPHVIZ. @@ -1961,10 +1854,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.dot li +} diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.txt linux/Documentation/filesystems/aufs/design/06dirren.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/06dirren.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/06dirren.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,102 @@ + -+# Copyright (C) 2017-2020 Junjiro R. Okajima ++# Copyright (C) 2017-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -2042,7 +1935,7 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.txt li +simply the inode-numbers on the branch. The file is created or updated +in removing the branch, and loaded in adding the branch. Its lifetime is +equal to the branch. -+The list is refered in lookup, and when the current target inode is ++The list is referred in lookup, and when the current target inode is +found in the list, the aufs tries loading the "detailed info per +directory" and get the changed and valid name of the dir. + @@ -2067,10 +1960,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06dirren.txt li +equivalen to udba=reval case. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06fhsm.txt linux/Documentation/filesystems/aufs/design/06fhsm.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/06fhsm.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/06fhsm.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/06fhsm.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,120 @@ + -+# Copyright (C) 2011-2020 Junjiro R. Okajima ++# Copyright (C) 2011-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -2191,10 +2084,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06fhsm.txt linu +should restore the original file state after an error happens. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06mmap.txt linux/Documentation/filesystems/aufs/design/06mmap.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/06mmap.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/06mmap.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/06mmap.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,72 @@ + -+# Copyright (C) 2005-2020 Junjiro R. Okajima ++# Copyright (C) 2005-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -2267,10 +2160,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06mmap.txt linu +I have to give up this "looks-smater" approach. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06xattr.txt linux/Documentation/filesystems/aufs/design/06xattr.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/06xattr.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/06xattr.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/06xattr.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,96 @@ + -+# Copyright (C) 2014-2020 Junjiro R. Okajima ++# Copyright (C) 2014-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -2367,10 +2260,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/06xattr.txt lin +now, aufs implements the branch attributes to ignore the error. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/07export.txt linux/Documentation/filesystems/aufs/design/07export.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/07export.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/07export.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/07export.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,58 @@ + -+# Copyright (C) 2005-2020 Junjiro R. Okajima ++# Copyright (C) 2005-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -2429,10 +2322,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/07export.txt li + lookup_one_len(), vfs_getattr(), encode_fh() and others. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/08shwh.txt linux/Documentation/filesystems/aufs/design/08shwh.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/08shwh.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/08shwh.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/08shwh.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,52 @@ + -+# Copyright (C) 2005-2020 Junjiro R. Okajima ++# Copyright (C) 2005-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -2485,10 +2378,10 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/08shwh.txt linu +initramfs will use it to replace the old one at the next boot. diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/10dynop.txt linux/Documentation/filesystems/aufs/design/10dynop.txt --- /usr/share/empty/Documentation/filesystems/aufs/design/10dynop.txt 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/design/10dynop.txt 2020-01-27 10:57:18.165538015 +0100 ++++ linux/Documentation/filesystems/aufs/design/10dynop.txt 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,47 @@ + -+# Copyright (C) 2010-2020 Junjiro R. Okajima ++# Copyright (C) 2010-2021 Junjiro R. Okajima +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by @@ -2536,8 +2429,8 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/design/10dynop.txt lin +regular files only. diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documentation/filesystems/aufs/README --- /usr/share/empty/Documentation/filesystems/aufs/README 1970-01-01 01:00:00.000000000 +0100 -+++ linux/Documentation/filesystems/aufs/README 2020-01-23 09:59:36.748660743 +0100 -@@ -0,0 +1,401 @@ ++++ linux/Documentation/filesystems/aufs/README 2022-08-02 12:12:45.158975302 +0200 +@@ -0,0 +1,397 @@ + +Aufs5 -- advanced multi layered unification filesystem version 5.x +http://aufs.sf.net @@ -2722,6 +2615,16 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documenta +For aufs5-linux tree, +- enable CONFIG_AUFS_FS. +- set other aufs configurations if necessary. ++- for aufs5.13 and later ++ Because aufs is not only an ordinary filesystem (callee of VFS), but ++ also a caller of VFS functions for branch filesystems, subclassing of ++ the internal locks for LOCKDEP is necessary. LOCKDEP is a debugging ++ feature of linux kernel. If you enable CONFIG_LOCKDEP, then you will ++ need to customize some LOCKDEP numbers. Here are what I use on my ++ test environment. ++ CONFIG_LOCKDEP_BITS=21 ++ CONFIG_LOCKDEP_CHAINS_BITS=21 ++ CONFIG_LOCKDEP_STACK_TRACE_BITS=24 + +For aufs5-standalone tree, +There are several ways to build. @@ -2789,13 +2692,6 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documenta + Supports a nested loopback mount in a branch-fs. This patch is + unnecessary until aufs produces a message like "you may want to try + another patch for loopback file". -+- proc_mounts.patch -+ When there are many mountpoints and many mount(2)/umount(2) are -+ running, then /proc/mounts may not show the all mountpoints. This -+ patch makes /proc/mounts always show the full mountpoints list. -+ If you don't want to apply this patch and meet such problem, then you -+ need to increase the value of 'ProcMounts_Times' make-variable in -+ aufs-util.git as a second best solution. +- vfs-ino.patch + Modifies a system global kernel internal function get_next_ino() in + order to stop assigning 0 for an inode-number. Not directly related to @@ -2806,14 +2702,6 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documenta + duplication of inode number, which is important for backup tools and + other utilities. When you find aufs XINO files for tmpfs branch + growing too much, try this patch. -+- lockdep-debug.patch -+ Because aufs is not only an ordinary filesystem (callee of VFS), but -+ also a caller of VFS functions for branch filesystems, subclassing of -+ the internal locks for LOCKDEP is necessary. LOCKDEP is a debugging -+ feature of linux kernel. If you enable CONFIG_LOCKDEP, then you will -+ need to apply this debug patch to expand several constant values. -+ If you don't know what LOCKDEP is, then you don't have apply this -+ patch. + + +4. Usage @@ -2914,7 +2802,7 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documenta +The Parted Magic Project made a donation (2013/9 and 11). +Pavel Barta made a donation (2013/10). +Nikolay Pertsev made a donation (2014/5). -+James B made a donation (2014/7 and 2015/7). ++James B made a donation (2014/7, 2015/7, and 2021/12). +Stefano Di Biase made a donation (2014/8). +Daniel Epellei made a donation (2015/1). +OmegaPhil made a donation (2016/1, 2018/4). @@ -2922,6 +2810,7 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documenta +James Burry made a donation (2016/12). +Carsten Rose made a donation (2018/9). +Porteus Kiosk made a donation (2018/10). ++Enya Quetzalli Gomez Rodriguez made a donation (2022/5). + +Thank you very much. +Donations are always, including future donations, very important and @@ -2941,11 +2830,11 @@ diff -urN /usr/share/empty/Documentation/filesystems/aufs/README linux/Documenta +# End: ; diff -urN /usr/share/empty/fs/aufs/aufs.h linux/fs/aufs/aufs.h --- /usr/share/empty/fs/aufs/aufs.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/aufs.h 2020-01-27 10:57:18.165538015 +0100 ++++ linux/fs/aufs/aufs.h 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,62 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -3007,11 +2896,11 @@ diff -urN /usr/share/empty/fs/aufs/aufs.h linux/fs/aufs/aufs.h +#endif /* __AUFS_H__ */ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c --- /usr/share/empty/fs/aufs/branch.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/branch.c 2020-08-03 09:14:46.095748745 +0200 ++++ linux/fs/aufs/branch.c 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,1427 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -4290,7 +4179,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c + * file_release_write() for each file, because the branch + * attribute in aufs world is totally different from the native + * fs rw/ro mode. -+ */ ++ */ + /* fi_read_lock(file); */ + hfile = &au_fi(file)->fi_htop; + hf = hfile->hf_file; @@ -4438,11 +4327,11 @@ diff -urN /usr/share/empty/fs/aufs/branch.c linux/fs/aufs/branch.c +} diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h --- /usr/share/empty/fs/aufs/branch.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/branch.h 2020-01-27 10:57:18.165538015 +0100 -@@ -0,0 +1,366 @@ ++++ linux/fs/aufs/branch.h 2022-08-02 12:12:45.162308621 +0200 +@@ -0,0 +1,375 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -4588,6 +4477,11 @@ diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h + return br->br_path.dentry; +} + ++static inline struct user_namespace *au_br_userns(struct au_branch *br) ++{ ++ return mnt_user_ns(br->br_path.mnt); ++} ++ +static inline struct super_block *au_br_sb(struct au_branch *br) +{ + return au_br_mnt(br)->mnt_sb; @@ -4683,10 +4577,8 @@ diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h + ino_t *ino); +int au_xino_write(struct super_block *sb, aufs_bindex_t bindex, ino_t h_ino, + ino_t ino); -+ssize_t xino_fread(vfs_readf_t func, struct file *file, void *buf, size_t size, -+ loff_t *pos); -+ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf, -+ size_t size, loff_t *pos); ++ssize_t xino_fread(struct file *file, void *buf, size_t size, loff_t *pos); ++ssize_t xino_fwrite(struct file *file, void *buf, size_t size, loff_t *pos); + +int au_xib_trunc(struct super_block *sb); +int au_xino_trunc(struct super_block *sb, aufs_bindex_t bindex, int idx_begin); @@ -4749,6 +4641,12 @@ diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h +} + +static inline ++struct user_namespace *au_sbr_userns(struct super_block *sb, aufs_bindex_t bindex) ++{ ++ return au_br_userns(au_sbr(sb, bindex)); ++} ++ ++static inline +struct super_block *au_sbr_sb(struct super_block *sb, aufs_bindex_t bindex) +{ + return au_br_sb(au_sbr(sb, bindex)); @@ -4808,7 +4706,7 @@ diff -urN /usr/share/empty/fs/aufs/branch.h linux/fs/aufs/branch.h +#endif /* __AUFS_BRANCH_H__ */ diff -urN /usr/share/empty/fs/aufs/conf.mk linux/fs/aufs/conf.mk --- /usr/share/empty/fs/aufs/conf.mk 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/conf.mk 2019-07-11 15:42:14.462237786 +0200 ++++ linux/fs/aufs/conf.mk 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: GPL-2.0 + @@ -4852,11 +4750,11 @@ diff -urN /usr/share/empty/fs/aufs/conf.mk linux/fs/aufs/conf.mk +-include ${srctree}/${src}/conf_priv.mk diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c --- /usr/share/empty/fs/aufs/cpup.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/cpup.c 2020-01-27 10:57:18.165538015 +0100 -@@ -0,0 +1,1458 @@ ++++ linux/fs/aufs/cpup.c 2022-08-02 12:12:45.162308621 +0200 +@@ -0,0 +1,1459 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -5020,7 +4918,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c +}; + +static noinline_for_stack -+int cpup_iattr(struct dentry *dst, aufs_bindex_t bindex, struct dentry *h_src, ++int cpup_iattr(struct dentry *dst, aufs_bindex_t bindex, struct path *h_src, + struct au_cpup_reg_attr *h_src_attr) +{ + int err, sbits, icex; @@ -5032,11 +4930,11 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + struct kstat *h_st; + struct au_branch *br; + -+ h_path.dentry = au_h_dptr(dst, bindex); -+ h_idst = d_inode(h_path.dentry); + br = au_sbr(dst->d_sb, bindex); + h_path.mnt = au_br_mnt(br); -+ h_isrc = d_inode(h_src); ++ h_path.dentry = au_h_dptr(dst, bindex); ++ h_idst = d_inode(h_path.dentry); ++ h_isrc = d_inode(h_src->dentry); + ia.ia_valid = ATTR_FORCE | ATTR_UID | ATTR_GID + | ATTR_ATIME | ATTR_MTIME + | ATTR_ATIME_SET | ATTR_MTIME_SET; @@ -5080,7 +4978,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + if (!err) { + mnt_flags = au_mntflags(dst->d_sb); + verbose = !!au_opt_test(mnt_flags, VERBOSE); -+ err = au_cpup_xattr(h_path.dentry, h_src, icex, verbose); ++ err = au_cpup_xattr(&h_path, h_src, icex, verbose); + } + + return err; @@ -5425,32 +5323,19 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c +static int au_do_cpup_symlink(struct path *h_path, struct dentry *h_src, + struct inode *h_dir) +{ -+ int err, symlen; -+ mm_segment_t old_fs; -+ union { -+ char *k; -+ char __user *u; -+ } sym; ++ int err; ++ DEFINE_DELAYED_CALL(done); ++ const char *sym; + -+ err = -ENOMEM; -+ sym.k = (void *)__get_free_page(GFP_NOFS); -+ if (unlikely(!sym.k)) ++ sym = vfs_get_link(h_src, &done); ++ err = PTR_ERR(sym); ++ if (IS_ERR(sym)) + goto out; + -+ /* unnecessary to support mmap_sem since symlink is not mmap-able */ -+ old_fs = get_fs(); -+ set_fs(KERNEL_DS); -+ symlen = vfs_readlink(h_src, sym.u, PATH_MAX); -+ err = symlen; -+ set_fs(old_fs); -+ -+ if (symlen > 0) { -+ sym.k[symlen] = 0; -+ err = vfsub_symlink(h_dir, h_path, sym.k); -+ } -+ free_page((unsigned long)sym.k); ++ err = vfsub_symlink(h_dir, h_path, sym); + +out: ++ do_delayed_call(&done); + return err; +} + @@ -5463,16 +5348,18 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + int err; + struct dentry *h_dentry; + struct inode *h_inode; ++ struct user_namespace *h_userns; + ++ h_userns = mnt_user_ns(h_path->mnt); + h_dentry = h_path->dentry; + h_inode = d_inode(h_dentry); + /* forget_all_cached_acls(h_inode)); */ -+ err = vfsub_removexattr(h_dentry, XATTR_NAME_POSIX_ACL_ACCESS); ++ err = vfsub_removexattr(h_userns, h_dentry, XATTR_NAME_POSIX_ACL_ACCESS); + AuTraceErr(err); + if (err == -EOPNOTSUPP) + err = 0; + if (!err) -+ err = vfsub_acl_chmod(h_inode, mode); ++ err = vfsub_acl_chmod(h_userns, h_inode, mode); + + AuTraceErr(err); + return err; @@ -5483,8 +5370,11 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c +{ + int err; + struct inode *dir, *inode; ++ struct user_namespace *h_userns; + -+ err = vfsub_removexattr(h_path->dentry, XATTR_NAME_POSIX_ACL_DEFAULT); ++ h_userns = mnt_user_ns(h_path->mnt); ++ err = vfsub_removexattr(h_userns, h_path->dentry, ++ XATTR_NAME_POSIX_ACL_DEFAULT); + AuTraceErr(err); + if (err == -EOPNOTSUPP) + err = 0; @@ -5565,7 +5455,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + case S_IFCHR: + case S_IFBLK: + AuDebugOn(!capable(CAP_MKNOD)); -+ /*FALLTHROUGH*/ ++ fallthrough; + case S_IFIFO: + case S_IFSOCK: + err = vfsub_mknod(h_dir, &h_path, mode, h_inode->i_rdev); @@ -5609,11 +5499,13 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c +{ + int err; + struct dentry *dentry, *h_dentry, *h_parent, *parent; ++ struct path h_ppath; + struct inode *h_dir; + aufs_bindex_t bdst; + + dentry = cpg->dentry; + bdst = cpg->bdst; ++ h_ppath.mnt = au_sbr_mnt(dentry->d_sb, bdst); + h_dentry = au_h_dptr(dentry, bdst); + if (!au_ftest_cpup(cpg->flags, OVERWRITE)) { + dget(h_dentry); @@ -5625,9 +5517,9 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + } else { + err = 0; + parent = dget_parent(dentry); -+ h_parent = au_h_dptr(parent, bdst); ++ h_ppath.dentry = au_h_dptr(parent, bdst); + dput(parent); -+ h_path->dentry = vfsub_lkup_one(&dentry->d_name, h_parent); ++ h_path->dentry = vfsub_lkup_one(&dentry->d_name, &h_ppath); + if (IS_ERR(h_path->dentry)) + err = PTR_ERR(h_path->dentry); + } @@ -5665,6 +5557,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + struct inode *dst_inode, *h_dir, *inode, *delegated, *src_inode; + struct super_block *sb; + struct au_branch *br; ++ struct path h_src_path; + /* to reduce stack size */ + struct { + struct au_dtime dt; @@ -5756,7 +5649,9 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + /* todo: necessary? */ + /* au_pin_hdir_unlock(cpg->pin); */ + -+ err = cpup_iattr(cpg->dentry, cpg->bdst, h_src, &a->h_src_attr); ++ h_src_path.dentry = h_src; ++ h_src_path.mnt = au_sbr_mnt(sb, cpg->bsrc); ++ err = cpup_iattr(cpg->dentry, cpg->bdst, &h_src_path, &a->h_src_attr); + if (unlikely(err)) { + /* todo: necessary? */ + /* au_pin_hdir_relock(cpg->pin); */ /* ignore an error */ @@ -5958,6 +5853,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + struct dentry *dentry, *parent; + struct file *h_file; + struct inode *h_dir; ++ struct user_namespace *h_userns; + + dentry = cpg->dentry; + h_file = NULL; @@ -5971,7 +5867,8 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + + parent = dget_parent(dentry); + h_dir = au_h_iptr(d_inode(parent), cpg->bdst); -+ if (!au_test_h_perm_sio(h_dir, MAY_EXEC | MAY_WRITE) ++ h_userns = au_sbr_userns(dentry->d_sb, cpg->bdst); ++ if (!au_test_h_perm_sio(h_userns, h_dir, MAY_EXEC | MAY_WRITE) + && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode)) + err = au_cpup_simple(cpg); + else { @@ -6141,6 +6038,7 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + struct inode *dir, *h_dir, *h_tmpdir; + struct au_wbr *wbr; + struct au_pin wh_pin, *pin_orig; ++ struct user_namespace *h_userns; + + dentry = cpg->dentry; + bdst = cpg->bdst; @@ -6169,7 +6067,8 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c + cpg->pin = &wh_pin; + } + -+ if (!au_test_h_perm_sio(h_tmpdir, MAY_EXEC | MAY_WRITE) ++ h_userns = au_sbr_userns(dentry->d_sb, bdst); ++ if (!au_test_h_perm_sio(h_userns, h_tmpdir, MAY_EXEC | MAY_WRITE) + && !au_cpup_sio_test(cpg->pin, d_inode(dentry)->i_mode)) + err = au_cpup_wh(cpg, file); + else { @@ -6314,11 +6213,11 @@ diff -urN /usr/share/empty/fs/aufs/cpup.c linux/fs/aufs/cpup.c +} diff -urN /usr/share/empty/fs/aufs/cpup.h linux/fs/aufs/cpup.h --- /usr/share/empty/fs/aufs/cpup.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/cpup.h 2020-01-27 10:57:18.168871450 +0100 ++++ linux/fs/aufs/cpup.h 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,100 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -6418,11 +6317,11 @@ diff -urN /usr/share/empty/fs/aufs/cpup.h linux/fs/aufs/cpup.h +#endif /* __AUFS_CPUP_H__ */ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c --- /usr/share/empty/fs/aufs/dbgaufs.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dbgaufs.c 2020-01-27 10:57:18.168871450 +0100 ++++ linux/fs/aufs/dbgaufs.c 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,526 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -6948,11 +6847,11 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.c linux/fs/aufs/dbgaufs.c +} diff -urN /usr/share/empty/fs/aufs/dbgaufs.h linux/fs/aufs/dbgaufs.h --- /usr/share/empty/fs/aufs/dbgaufs.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dbgaufs.h 2020-01-27 10:57:18.168871450 +0100 ++++ linux/fs/aufs/dbgaufs.h 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -7005,11 +6904,11 @@ diff -urN /usr/share/empty/fs/aufs/dbgaufs.h linux/fs/aufs/dbgaufs.h +#endif /* __DBGAUFS_H__ */ diff -urN /usr/share/empty/fs/aufs/dcsub.c linux/fs/aufs/dcsub.c --- /usr/share/empty/fs/aufs/dcsub.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dcsub.c 2020-01-27 10:57:18.168871450 +0100 ++++ linux/fs/aufs/dcsub.c 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,225 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -7234,11 +7133,11 @@ diff -urN /usr/share/empty/fs/aufs/dcsub.c linux/fs/aufs/dcsub.c +} diff -urN /usr/share/empty/fs/aufs/dcsub.h linux/fs/aufs/dcsub.h --- /usr/share/empty/fs/aufs/dcsub.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dcsub.h 2020-01-27 10:57:18.168871450 +0100 ++++ linux/fs/aufs/dcsub.h 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,137 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -7375,11 +7274,11 @@ diff -urN /usr/share/empty/fs/aufs/dcsub.h linux/fs/aufs/dcsub.h +#endif /* __AUFS_DCSUB_H__ */ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c --- /usr/share/empty/fs/aufs/debug.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/debug.c 2020-01-27 10:57:18.168871450 +0100 -@@ -0,0 +1,441 @@ ++++ linux/fs/aufs/debug.c 2022-08-02 12:12:45.162308621 +0200 +@@ -0,0 +1,444 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -7426,7 +7325,7 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c + return sprintf(buffer, "%d", atomic_read(a)); +} + -+static struct kernel_param_ops param_ops_atomic_t = { ++static const struct kernel_param_ops param_ops_atomic_t = { + .set = param_atomic_t_set, + .get = param_atomic_t_get + /* void (*free)(void *arg) */ @@ -7762,7 +7661,10 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c + AuDbgDentry(dentry); + AuDbgInode(inode); + au_debug_off(); -+ BUG(); ++ if (au_test_fuse(h_inode->i_sb)) ++ WARN_ON_ONCE(1); ++ else ++ BUG(); + } + } +} @@ -7820,11 +7722,11 @@ diff -urN /usr/share/empty/fs/aufs/debug.c linux/fs/aufs/debug.c +} diff -urN /usr/share/empty/fs/aufs/debug.h linux/fs/aufs/debug.h --- /usr/share/empty/fs/aufs/debug.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/debug.h 2020-01-27 10:57:18.168871450 +0100 ++++ linux/fs/aufs/debug.h 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,226 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -8050,11 +7952,11 @@ diff -urN /usr/share/empty/fs/aufs/debug.h linux/fs/aufs/debug.h +#endif /* __AUFS_DEBUG_H__ */ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c --- /usr/share/empty/fs/aufs/dentry.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dentry.c 2020-01-27 10:57:18.168871450 +0100 -@@ -0,0 +1,1154 @@ ++++ linux/fs/aufs/dentry.c 2022-08-02 12:12:45.162308621 +0200 +@@ -0,0 +1,1168 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -8075,7 +7977,6 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c + */ + +#include -+#include +#include "aufs.h" + +/* @@ -8089,6 +7990,8 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c + struct dentry *h_dentry; + struct inode *h_inode; + struct au_branch *br; ++ struct user_namespace *h_userns; ++ struct path h_path; + int wh_found, opq; + unsigned char wh_able; + const unsigned char allow_neg = !!au_ftest_lkup(args->flags, ALLOW_NEG); @@ -8097,9 +8000,13 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c + + wh_found = 0; + br = au_sbr(dentry->d_sb, bindex); ++ h_path.dentry = h_parent; ++ h_path.mnt = au_br_mnt(br); ++ h_userns = au_br_userns(br); + wh_able = !!au_br_whable(br->br_perm); + if (wh_able) -+ wh_found = au_wh_test(h_parent, &args->whname, ignore_perm); ++ wh_found = au_wh_test(h_userns, &h_path, &args->whname, ++ ignore_perm); + h_dentry = ERR_PTR(wh_found); + if (!wh_found) + goto real_lookup; @@ -8114,9 +8021,9 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c + +real_lookup: + if (!ignore_perm) -+ h_dentry = vfsub_lkup_one(args->name, h_parent); ++ h_dentry = vfsub_lkup_one(args->name, &h_path); + else -+ h_dentry = au_sio_lkup_one(args->name, h_parent); ++ h_dentry = au_sio_lkup_one(h_userns, args->name, &h_path); + if (IS_ERR(h_dentry)) { + if (PTR_ERR(h_dentry) == -ENAMETOOLONG + && !allow_neg) @@ -8150,8 +8057,9 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c + || (d_really_is_positive(dentry) && !d_is_dir(dentry))) + goto out; /* success */ + ++ h_path.dentry = h_dentry; + inode_lock_shared_nested(h_inode, AuLsc_I_CHILD); -+ opq = au_diropq_test(h_dentry); ++ opq = au_diropq_test(h_userns, &h_path); + inode_unlock_shared(h_inode); + if (opq > 0) + au_set_dbdiropq(dentry, bindex); @@ -8296,18 +8204,19 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c + return err; +} + -+struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent) ++struct dentry *au_sio_lkup_one(struct user_namespace *userns, struct qstr *name, ++ struct path *ppath) +{ + struct dentry *dentry; + int wkq_err; + -+ if (!au_test_h_perm_sio(d_inode(parent), MAY_EXEC)) -+ dentry = vfsub_lkup_one(name, parent); ++ if (!au_test_h_perm_sio(userns, d_inode(ppath->dentry), MAY_EXEC)) ++ dentry = vfsub_lkup_one(name, ppath); + else { + struct vfsub_lkup_one_args args = { + .errp = &dentry, + .name = name, -+ .parent = parent ++ .ppath = ppath + }; + + wkq_err = au_wkq_wait(vfsub_call_lkup_one, &args); @@ -8324,16 +8233,20 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c +int au_lkup_neg(struct dentry *dentry, aufs_bindex_t bindex, int wh) +{ + int err; -+ struct dentry *parent, *h_parent, *h_dentry; ++ struct dentry *parent, *h_dentry; + struct au_branch *br; ++ struct user_namespace *h_userns; ++ struct path h_ppath; + + parent = dget_parent(dentry); -+ h_parent = au_h_dptr(parent, bindex); + br = au_sbr(dentry->d_sb, bindex); ++ h_ppath.dentry = au_h_dptr(parent, bindex); ++ h_ppath.mnt = au_br_mnt(br); ++ h_userns = au_br_userns(br); + if (wh) -+ h_dentry = au_whtmp_lkup(h_parent, br, &dentry->d_name); ++ h_dentry = au_whtmp_lkup(h_ppath.dentry, br, &dentry->d_name); + else -+ h_dentry = au_sio_lkup_one(&dentry->d_name, h_parent); ++ h_dentry = au_sio_lkup_one(h_userns, &dentry->d_name, &h_ppath); + err = PTR_ERR(h_dentry); + if (IS_ERR(h_dentry)) + goto out; @@ -8408,6 +8321,7 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c + struct inode *h_inode; + struct dentry *h_d; + struct super_block *h_sb; ++ struct path h_ppath; + + err = 0; + memset(&ia, -1, sizeof(ia)); @@ -8422,7 +8336,9 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c + goto out; + + /* main purpose is namei.c:cached_lookup() and d_revalidate */ -+ h_d = vfsub_lkup_one(&h_dentry->d_name, h_parent); ++ h_ppath.dentry = h_parent; ++ h_ppath.mnt = au_br_mnt(br); ++ h_d = vfsub_lkup_one(&h_dentry->d_name, &h_ppath); + err = PTR_ERR(h_d); + if (IS_ERR(h_d)) + goto out; @@ -9208,11 +9124,11 @@ diff -urN /usr/share/empty/fs/aufs/dentry.c linux/fs/aufs/dentry.c +}; diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h --- /usr/share/empty/fs/aufs/dentry.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dentry.h 2020-01-27 10:57:18.168871450 +0100 -@@ -0,0 +1,268 @@ ++++ linux/fs/aufs/dentry.h 2022-08-02 12:12:45.162308621 +0200 +@@ -0,0 +1,269 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -9285,7 +9201,8 @@ diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h +/* dentry.c */ +extern const struct dentry_operations aufs_dop, aufs_dop_noreval; +struct au_branch; -+struct dentry *au_sio_lkup_one(struct qstr *name, struct dentry *parent); ++struct dentry *au_sio_lkup_one(struct user_namespace *userns, struct qstr *name, ++ struct path *ppath); +int au_h_verify(struct dentry *h_dentry, unsigned int udba, struct inode *h_dir, + struct dentry *h_parent, struct au_branch *br); + @@ -9480,11 +9397,11 @@ diff -urN /usr/share/empty/fs/aufs/dentry.h linux/fs/aufs/dentry.h +#endif /* __AUFS_DENTRY_H__ */ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c --- /usr/share/empty/fs/aufs/dinfo.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dinfo.c 2020-01-27 10:57:18.168871450 +0100 ++++ linux/fs/aufs/dinfo.c 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,554 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -10038,11 +9955,11 @@ diff -urN /usr/share/empty/fs/aufs/dinfo.c linux/fs/aufs/dinfo.c +} diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c --- /usr/share/empty/fs/aufs/dir.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dir.c 2020-01-27 10:57:18.168871450 +0100 -@@ -0,0 +1,763 @@ ++++ linux/fs/aufs/dir.c 2022-08-02 12:12:45.162308621 +0200 +@@ -0,0 +1,765 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -10679,12 +10596,14 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c + int err, wkq_err; + struct dentry *h_dentry; + struct inode *h_inode; ++ struct user_namespace *h_userns; + ++ h_userns = au_sbr_userns(dentry->d_sb, arg->bindex); + h_dentry = au_h_dptr(dentry, arg->bindex); + h_inode = d_inode(h_dentry); + /* todo: i_mode changes anytime? */ + inode_lock_shared_nested(h_inode, AuLsc_I_CHILD); -+ err = au_test_h_perm_sio(h_inode, MAY_EXEC | MAY_READ); ++ err = au_test_h_perm_sio(h_userns, h_inode, MAY_EXEC | MAY_READ); + inode_unlock_shared(h_inode); + if (!err) + err = do_test_empty(dentry, arg); @@ -10805,11 +10724,11 @@ diff -urN /usr/share/empty/fs/aufs/dir.c linux/fs/aufs/dir.c +}; diff -urN /usr/share/empty/fs/aufs/dir.h linux/fs/aufs/dir.h --- /usr/share/empty/fs/aufs/dir.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dir.h 2020-08-03 09:14:46.095748745 +0200 ++++ linux/fs/aufs/dir.h 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,134 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -10943,11 +10862,11 @@ diff -urN /usr/share/empty/fs/aufs/dir.h linux/fs/aufs/dir.h +#endif /* __AUFS_DIR_H__ */ diff -urN /usr/share/empty/fs/aufs/dirren.c linux/fs/aufs/dirren.c --- /usr/share/empty/fs/aufs/dirren.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dirren.c 2020-08-03 09:14:46.095748745 +0200 -@@ -0,0 +1,1316 @@ ++++ linux/fs/aufs/dirren.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,1315 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2017-2020 Junjiro R. Okajima ++ * Copyright (C) 2017-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -11210,7 +11129,8 @@ diff -urN /usr/share/empty/fs/aufs/dirren.c linux/fs/aufs/dirren.c + dir = d_inode(path->dentry); + inode_lock_nested(dir, AuLsc_I_CHILD); + } -+ hinopath.dentry = vfsub_lkup_one(&hinoname, path->dentry); ++ hinopath.mnt = path->mnt; ++ hinopath.dentry = vfsub_lkup_one(&hinoname, (struct path *)path); + err = PTR_ERR(hinopath.dentry); + if (IS_ERR(hinopath.dentry)) + goto out_unlock; @@ -11244,7 +11164,6 @@ diff -urN /usr/share/empty/fs/aufs/dirren.c linux/fs/aufs/dirren.c + } + flags = O_WRONLY; + } -+ hinopath.mnt = path->mnt; + hinofile = vfsub_dentry_open(&hinopath, flags); + if (suspend) + au_hn_inode_unlock(hdir); @@ -11566,7 +11485,7 @@ diff -urN /usr/share/empty/fs/aufs/dirren.c linux/fs/aufs/dirren.c + AuDebugOn(elm + && memcmp(elm, page_address(ZERO_PAGE(0)), sizeof(*elm))); + -+ infopath.dentry = vfsub_lookup_one_len(w->whname, w->h_ppath.dentry, ++ infopath.dentry = vfsub_lookup_one_len(w->whname, &w->h_ppath, + w->whnamelen); + AuTraceErrPtr(infopath.dentry); + if (IS_ERR(infopath.dentry)) { @@ -11950,8 +11869,7 @@ diff -urN /usr/share/empty/fs/aufs/dirren.c linux/fs/aufs/dirren.c + unlocked = 0; + h_dir = d_inode(h_ppath->dentry); + inode_lock_shared_nested(h_dir, AuLsc_I_PARENT); -+ infopath.dentry = vfsub_lookup_one_len(whname, h_ppath->dentry, -+ whnamelen); ++ infopath.dentry = vfsub_lookup_one_len(whname, h_ppath, whnamelen); + if (IS_ERR(infopath.dentry)) { + drinfo = (void *)infopath.dentry; + goto out; @@ -12263,11 +12181,11 @@ diff -urN /usr/share/empty/fs/aufs/dirren.c linux/fs/aufs/dirren.c +} diff -urN /usr/share/empty/fs/aufs/dirren.h linux/fs/aufs/dirren.h --- /usr/share/empty/fs/aufs/dirren.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dirren.h 2020-01-27 10:57:18.168871450 +0100 ++++ linux/fs/aufs/dirren.h 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,140 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2017-2020 Junjiro R. Okajima ++ * Copyright (C) 2017-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -12407,11 +12325,11 @@ diff -urN /usr/share/empty/fs/aufs/dirren.h linux/fs/aufs/dirren.h +#endif /* __AUFS_DIRREN_H__ */ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c --- /usr/share/empty/fs/aufs/dynop.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dynop.c 2020-01-27 10:57:18.168871450 +0100 -@@ -0,0 +1,367 @@ ++++ linux/fs/aufs/dynop.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,368 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2010-2020 Junjiro R. Okajima ++ * Copyright (C) 2010-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -12587,27 +12505,28 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c + AuDbg("%s\n", au_sbtype(h_sb)); + + DySetAop(writepage); -+ DySetAopForce(readpage); /* force */ ++ DySetAopForce(read_folio); /* force */ + DySetAop(writepages); -+ DySetAop(set_page_dirty); -+ DySetAop(readpages); ++ DySetAop(dirty_folio); ++ DySetAop(invalidate_folio); ++ DySetAop(readahead); + DySetAop(write_begin); + DySetAop(write_end); + DySetAop(bmap); -+ DySetAop(invalidatepage); -+ DySetAop(releasepage); -+ DySetAop(freepage); ++ DySetAop(release_folio); ++ DySetAop(free_folio); + /* this one will be changed according to an aufs mount option */ + DySetAop(direct_IO); + DySetAop(migratepage); + DySetAop(isolate_page); + DySetAop(putback_page); -+ DySetAop(launder_page); ++ DySetAop(launder_folio); + DySetAop(is_partially_uptodate); + DySetAop(is_dirty_writeback); + DySetAop(error_remove_page); + DySetAop(swap_activate); + DySetAop(swap_deactivate); ++ DySetAop(swap_rw); + + DyDbgSize(cnt, *h_aop); +} @@ -12778,11 +12697,11 @@ diff -urN /usr/share/empty/fs/aufs/dynop.c linux/fs/aufs/dynop.c +} diff -urN /usr/share/empty/fs/aufs/dynop.h linux/fs/aufs/dynop.h --- /usr/share/empty/fs/aufs/dynop.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/dynop.h 2020-01-27 10:57:18.168871450 +0100 ++++ linux/fs/aufs/dynop.h 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2010-2020 Junjiro R. Okajima ++ * Copyright (C) 2010-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -12859,11 +12778,11 @@ diff -urN /usr/share/empty/fs/aufs/dynop.h linux/fs/aufs/dynop.h +#endif /* __AUFS_DYNOP_H__ */ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c --- /usr/share/empty/fs/aufs/export.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/export.c 2020-01-27 10:57:18.168871450 +0100 -@@ -0,0 +1,838 @@ ++++ linux/fs/aufs/export.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,830 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -12885,7 +12804,6 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c + +#include +#include -+#include +#include +#include +#include @@ -12984,8 +12902,7 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c + pos = inode->i_ino; + pos *= sizeof(igen); + igen = inode->i_generation + 1; -+ sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xigen, &igen, -+ sizeof(igen), &pos); ++ sz = xino_fwrite(sbinfo->si_xigen, &igen, sizeof(igen), &pos); + if (sz == sizeof(igen)) + return; /* success */ + @@ -13027,10 +12944,10 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c + if (vfsub_f_size_read(file) + < pos + sizeof(inode->i_generation)) { + inode->i_generation = atomic_inc_return(&sbinfo->si_xigen_next); -+ sz = xino_fwrite(sbinfo->si_xwrite, file, &inode->i_generation, ++ sz = xino_fwrite(file, &inode->i_generation, + sizeof(inode->i_generation), &pos); + } else -+ sz = xino_fread(sbinfo->si_xread, file, &inode->i_generation, ++ sz = xino_fread(file, &inode->i_generation, + sizeof(inode->i_generation), &pos); + if (sz == sizeof(inode->i_generation)) + goto out; /* success */ @@ -13270,7 +13187,7 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c + + /* do not call vfsub_lkup_one() */ + dir = d_inode(parent); -+ dentry = vfsub_lookup_one_len_unlocked(arg.name, parent, arg.namelen); ++ dentry = vfsub_lookup_one_len_unlocked(arg.name, path, arg.namelen); + AuTraceErrPtr(dentry); + if (IS_ERR(dentry)) + goto out_name; @@ -13658,14 +13575,8 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c + f = h_inode->i_sb->s_export_op->commit_metadata; + if (f) + err = f(h_inode); -+ else { -+ struct writeback_control wbc = { -+ .sync_mode = WB_SYNC_ALL, -+ .nr_to_write = 0 /* metadata only */ -+ }; -+ -+ err = sync_inode(h_inode, &wbc); -+ } ++ else ++ err = sync_inode_metadata(h_inode, /*wait*/1); + + au_cpup_attr_timesizes(inode); + ii_write_unlock(inode); @@ -13701,11 +13612,11 @@ diff -urN /usr/share/empty/fs/aufs/export.c linux/fs/aufs/export.c +} diff -urN /usr/share/empty/fs/aufs/fhsm.c linux/fs/aufs/fhsm.c --- /usr/share/empty/fs/aufs/fhsm.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/fhsm.c 2020-01-27 10:57:18.172204883 +0100 ++++ linux/fs/aufs/fhsm.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,427 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2011-2020 Junjiro R. Okajima ++ * Copyright (C) 2011-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -14132,11 +14043,11 @@ diff -urN /usr/share/empty/fs/aufs/fhsm.c linux/fs/aufs/fhsm.c +} diff -urN /usr/share/empty/fs/aufs/file.c linux/fs/aufs/file.c --- /usr/share/empty/fs/aufs/file.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/file.c 2020-01-27 10:57:18.172204883 +0100 -@@ -0,0 +1,863 @@ ++++ linux/fs/aufs/file.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,864 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -14914,9 +14825,9 @@ diff -urN /usr/share/empty/fs/aufs/file.c linux/fs/aufs/file.c + +/* cf. aufs_nopage() */ +/* for madvise(2) */ -+static int aufs_readpage(struct file *file __maybe_unused, struct page *page) ++static int aufs_read_folio(struct file *file __maybe_unused, struct folio *folio) +{ -+ unlock_page(page); ++ folio_unlock(folio); + return 0; +} + @@ -14927,7 +14838,7 @@ diff -urN /usr/share/empty/fs/aufs/file.c linux/fs/aufs/file.c +/* they will never be called. */ +#ifdef CONFIG_AUFS_DEBUG +static int aufs_write_begin(struct file *file, struct address_space *mapping, -+ loff_t pos, unsigned len, unsigned flags, ++ loff_t pos, unsigned len, + struct page **pagep, void **fsdata) +{ AuUnsupport(); return 0; } +static int aufs_write_end(struct file *file, struct address_space *mapping, @@ -14937,13 +14848,12 @@ diff -urN /usr/share/empty/fs/aufs/file.c linux/fs/aufs/file.c +static int aufs_writepage(struct page *page, struct writeback_control *wbc) +{ AuUnsupport(); return 0; } + -+static int aufs_set_page_dirty(struct page *page) -+{ AuUnsupport(); return 0; } -+static void aufs_invalidatepage(struct page *page, unsigned int offset, -+ unsigned int length) ++static bool aufs_dirty_folio(struct address_space *mapping, struct folio *folio) ++{ AuUnsupport(); return true; } ++static void aufs_invalidate_folio(struct folio *folio, size_t offset, size_t len) +{ AuUnsupport(); } -+static int aufs_releasepage(struct page *page, gfp_t gfp) -+{ AuUnsupport(); return 0; } ++static bool aufs_release_folio(struct folio *folio, gfp_t gfp) ++{ AuUnsupport(); return true; } +#if 0 /* called by memory compaction regardless file */ +static int aufs_migratepage(struct address_space *mapping, struct page *newpage, + struct page *page, enum migrate_mode mode) @@ -14953,13 +14863,12 @@ diff -urN /usr/share/empty/fs/aufs/file.c linux/fs/aufs/file.c +{ AuUnsupport(); return true; } +static void aufs_putback_page(struct page *page) +{ AuUnsupport(); } -+static int aufs_launder_page(struct page *page) -+{ AuUnsupport(); return 0; } -+static int aufs_is_partially_uptodate(struct page *page, -+ unsigned long from, -+ unsigned long count) ++static int aufs_launder_folio(struct folio *folio) +{ AuUnsupport(); return 0; } -+static void aufs_is_dirty_writeback(struct page *page, bool *dirty, ++static bool aufs_is_partially_uptodate(struct folio *folio, size_t from, ++ size_t count) ++{ AuUnsupport(); return true; } ++static void aufs_is_dirty_writeback(struct folio *folio, bool *dirty, + bool *writeback) +{ AuUnsupport(); } +static int aufs_error_remove_page(struct address_space *mapping, @@ -14970,40 +14879,43 @@ diff -urN /usr/share/empty/fs/aufs/file.c linux/fs/aufs/file.c +{ AuUnsupport(); return 0; } +static void aufs_swap_deactivate(struct file *file) +{ AuUnsupport(); } ++static int aufs_swap_rw(struct kiocb *iocb, struct iov_iter *iter) ++{ AuUnsupport(); return 0; } +#endif /* CONFIG_AUFS_DEBUG */ + +const struct address_space_operations aufs_aop = { -+ .readpage = aufs_readpage, ++ .read_folio = aufs_read_folio, + .direct_IO = aufs_direct_IO, +#ifdef CONFIG_AUFS_DEBUG + .writepage = aufs_writepage, + /* no writepages, because of writepage */ -+ .set_page_dirty = aufs_set_page_dirty, ++ .dirty_folio = aufs_dirty_folio, + /* no readpages, because of readpage */ + .write_begin = aufs_write_begin, + .write_end = aufs_write_end, + /* no bmap, no block device */ -+ .invalidatepage = aufs_invalidatepage, -+ .releasepage = aufs_releasepage, ++ .invalidate_folio = aufs_invalidate_folio, ++ .release_folio = aufs_release_folio, + /* is fallback_migrate_page ok? */ + /* .migratepage = aufs_migratepage, */ + .isolate_page = aufs_isolate_page, + .putback_page = aufs_putback_page, -+ .launder_page = aufs_launder_page, ++ .launder_folio = aufs_launder_folio, + .is_partially_uptodate = aufs_is_partially_uptodate, + .is_dirty_writeback = aufs_is_dirty_writeback, + .error_remove_page = aufs_error_remove_page, + .swap_activate = aufs_swap_activate, -+ .swap_deactivate = aufs_swap_deactivate ++ .swap_deactivate = aufs_swap_deactivate, ++ .swap_rw = aufs_swap_rw +#endif /* CONFIG_AUFS_DEBUG */ +}; diff -urN /usr/share/empty/fs/aufs/file.h linux/fs/aufs/file.h --- /usr/share/empty/fs/aufs/file.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/file.h 2020-01-27 10:57:18.172204883 +0100 ++++ linux/fs/aufs/file.h 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,342 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -15345,11 +15257,11 @@ diff -urN /usr/share/empty/fs/aufs/file.h linux/fs/aufs/file.h +#endif /* __AUFS_FILE_H__ */ diff -urN /usr/share/empty/fs/aufs/finfo.c linux/fs/aufs/finfo.c --- /usr/share/empty/fs/aufs/finfo.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/finfo.c 2020-01-27 10:57:18.172204883 +0100 ++++ linux/fs/aufs/finfo.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -15498,11 +15410,11 @@ diff -urN /usr/share/empty/fs/aufs/finfo.c linux/fs/aufs/finfo.c +} diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c --- /usr/share/empty/fs/aufs/f_op.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/f_op.c 2020-01-27 10:57:18.172204883 +0100 -@@ -0,0 +1,819 @@ ++++ linux/fs/aufs/f_op.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,771 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -15744,34 +15656,6 @@ diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c + fput(h_file); +} + -+static ssize_t aufs_read(struct file *file, char __user *buf, size_t count, -+ loff_t *ppos) -+{ -+ ssize_t err; -+ struct inode *inode; -+ struct file *h_file; -+ struct super_block *sb; -+ -+ inode = file_inode(file); -+ sb = inode->i_sb; -+ si_read_lock(sb, AuLock_FLUSH | AuLock_NOPLMW); -+ -+ h_file = au_read_pre(file, /*keep_fi*/0, /*lsc*/0); -+ err = PTR_ERR(h_file); -+ if (IS_ERR(h_file)) -+ goto out; -+ -+ /* filedata may be obsoleted by concurrent copyup, but no problem */ -+ err = vfsub_read_u(h_file, buf, count, ppos); -+ /* todo: necessary? */ -+ /* file->f_ra = h_file->f_ra; */ -+ au_read_post(inode, h_file); -+ -+out: -+ si_read_unlock(sb); -+ return err; -+} -+ +/* + * todo: very ugly + * it locks both of i_mutex and si_rwsem for read in safe. @@ -15794,33 +15678,6 @@ diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c + } +} + -+static ssize_t aufs_write(struct file *file, const char __user *ubuf, -+ size_t count, loff_t *ppos) -+{ -+ ssize_t err; -+ struct au_write_pre wpre; -+ struct inode *inode; -+ struct file *h_file; -+ char __user *buf = (char __user *)ubuf; -+ -+ inode = file_inode(file); -+ au_mtx_and_read_lock(inode); -+ -+ wpre.lsc = 0; -+ h_file = au_write_pre(file, /*do_ready*/1, &wpre); -+ err = PTR_ERR(h_file); -+ if (IS_ERR(h_file)) -+ goto out; -+ -+ err = vfsub_write_u(h_file, buf, count, ppos); -+ au_write_post(inode, h_file, &wpre, err); -+ -+out: -+ si_read_unlock(inode->i_sb); -+ inode_unlock(inode); -+ return err; -+} -+ +static ssize_t au_do_iter(struct file *h_file, int rw, struct kiocb *kio, + struct iov_iter *iov_iter) +{ @@ -15916,6 +15773,15 @@ diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c + return err; +} + ++/* ++ * We may be able to remove aufs_splice_{read,write}() since almost all FSes ++ * don't have their own .splice_{read,write} implimentations, and they use ++ * generic_file_splice_read() and iter_file_splice_write() who can act like the ++ * simple converters to f_op->iter_read() and ->iter_write(). ++ * But we keep our own implementations because some non-mainlined FSes may have ++ * their own .splice_{read,write} implimentations and aufs doesn't want to take ++ * away an opportunity to co-work with aufs from them. ++ */ +static ssize_t aufs_splice_read(struct file *file, loff_t *ppos, + struct pipe_inode_info *pipe, size_t len, + unsigned int flags) @@ -16290,8 +16156,6 @@ diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c + + .llseek = default_llseek, + -+ .read = aufs_read, -+ .write = aufs_write, + .read_iter = aufs_read_iter, + .write_iter = aufs_write_iter, + @@ -16319,13 +16183,13 @@ diff -urN /usr/share/empty/fs/aufs/f_op.c linux/fs/aufs/f_op.c + .fallocate = aufs_fallocate, + .copy_file_range = aufs_copy_file_range +}; -diff -urN /usr/share/empty/fs/aufs/fstype.h linux/fs/aufs/fstype.h ---- /usr/share/empty/fs/aufs/fstype.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/fstype.h 2020-01-27 10:57:18.172204883 +0100 -@@ -0,0 +1,401 @@ -+/* SPDX-License-Identifier: GPL-2.0 */ +diff -urN /usr/share/empty/fs/aufs/fsctx.c linux/fs/aufs/fsctx.c +--- /usr/share/empty/fs/aufs/fsctx.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux/fs/aufs/fsctx.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,1242 @@ ++// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2022 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -16342,267 +16206,1513 @@ diff -urN /usr/share/empty/fs/aufs/fstype.h linux/fs/aufs/fstype.h + */ + +/* -+ * judging filesystem type ++ * fs context, aka new mount api + */ + -+#ifndef __AUFS_FSTYPE_H__ -+#define __AUFS_FSTYPE_H__ -+ -+#ifdef __KERNEL__ -+ -+#include -+#include -+#include -+#include -+ -+static inline int au_test_aufs(struct super_block *sb) -+{ -+ return sb->s_magic == AUFS_SUPER_MAGIC; -+} ++#include ++#include "aufs.h" + -+static inline const char *au_sbtype(struct super_block *sb) -+{ -+ return sb->s_type->name; -+} ++struct au_fsctx_opts { ++ aufs_bindex_t bindex; ++ unsigned char skipped; ++ struct au_opt *opt, *opt_tail; ++ struct super_block *sb; ++ struct au_sbinfo *sbinfo; ++ struct au_opts opts; ++}; + -+static inline int au_test_iso9660(struct super_block *sb __maybe_unused) ++/* stop extra interpretation of errno in mount(8), and strange error messages */ ++static int cvt_err(int err) +{ -+#if IS_ENABLED(CONFIG_ISO9660_FS) -+ return sb->s_magic == ISOFS_SUPER_MAGIC; -+#else -+ return 0; -+#endif -+} ++ AuTraceErr(err); + -+static inline int au_test_romfs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_ROMFS_FS) -+ return sb->s_magic == ROMFS_MAGIC; -+#else -+ return 0; -+#endif ++ switch (err) { ++ case -ENOENT: ++ case -ENOTDIR: ++ case -EEXIST: ++ case -EIO: ++ err = -EINVAL; ++ } ++ return err; +} + -+static inline int au_test_cramfs(struct super_block *sb __maybe_unused) ++static int au_fsctx_reconfigure(struct fs_context *fc) +{ -+#if IS_ENABLED(CONFIG_CRAMFS) -+ return sb->s_magic == CRAMFS_MAGIC; -+#endif -+ return 0; -+} ++ int err, do_dx; ++ unsigned int mntflags; ++ struct dentry *root; ++ struct super_block *sb; ++ struct inode *inode; ++ struct au_fsctx_opts *a = fc->fs_private; + -+static inline int au_test_nfs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_NFS_FS) -+ return sb->s_magic == NFS_SUPER_MAGIC; -+#else -+ return 0; -+#endif -+} ++ AuDbg("fc %p\n", fc); + -+static inline int au_test_fuse(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_FUSE_FS) -+ return sb->s_magic == FUSE_SUPER_MAGIC; -+#else -+ return 0; -+#endif -+} ++ root = fc->root; ++ sb = root->d_sb; ++ err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM); ++ if (!err) { ++ di_write_lock_child(root); ++ err = au_opts_verify(sb, fc->sb_flags, /*pending*/0); ++ aufs_write_unlock(root); ++ } + -+static inline int au_test_xfs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_XFS_FS) -+ return sb->s_magic == XFS_SB_MAGIC; -+#else -+ return 0; -+#endif -+} ++ inode = d_inode(root); ++ inode_lock(inode); ++ err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM); ++ if (unlikely(err)) ++ goto out; ++ di_write_lock_child(root); + -+static inline int au_test_tmpfs(struct super_block *sb __maybe_unused) -+{ -+#ifdef CONFIG_TMPFS -+ return sb->s_magic == TMPFS_MAGIC; -+#else -+ return 0; -+#endif -+} ++ /* au_opts_remount() may return an error */ ++ err = au_opts_remount(sb, &a->opts); + -+static inline int au_test_ecryptfs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_ECRYPT_FS) -+ return !strcmp(au_sbtype(sb), "ecryptfs"); -+#else -+ return 0; -+#endif -+} ++ if (au_ftest_opts(a->opts.flags, REFRESH)) ++ au_remount_refresh(sb, au_ftest_opts(a->opts.flags, ++ REFRESH_IDOP)); + -+static inline int au_test_ramfs(struct super_block *sb) -+{ -+ return sb->s_magic == RAMFS_MAGIC; -+} ++ if (au_ftest_opts(a->opts.flags, REFRESH_DYAOP)) { ++ mntflags = au_mntflags(sb); ++ do_dx = !!au_opt_test(mntflags, DIO); ++ au_dy_arefresh(do_dx); ++ } + -+static inline int au_test_ubifs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_UBIFS_FS) -+ return sb->s_magic == UBIFS_SUPER_MAGIC; -+#else -+ return 0; -+#endif -+} ++ au_fhsm_wrote_all(sb, /*force*/1); /* ?? */ ++ aufs_write_unlock(root); + -+static inline int au_test_procfs(struct super_block *sb __maybe_unused) -+{ -+#ifdef CONFIG_PROC_FS -+ return sb->s_magic == PROC_SUPER_MAGIC; -+#else -+ return 0; -+#endif -+} ++out: ++ inode_unlock(inode); ++ err = cvt_err(err); ++ AuTraceErr(err); + -+static inline int au_test_sysfs(struct super_block *sb __maybe_unused) -+{ -+#ifdef CONFIG_SYSFS -+ return sb->s_magic == SYSFS_MAGIC; -+#else -+ return 0; -+#endif ++ return err; +} + -+static inline int au_test_configfs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_CONFIGFS_FS) -+ return sb->s_magic == CONFIGFS_MAGIC; -+#else -+ return 0; -+#endif -+} ++/* ---------------------------------------------------------------------- */ + -+static inline int au_test_minix(struct super_block *sb __maybe_unused) ++static int au_fsctx_fill_super(struct super_block *sb, struct fs_context *fc) +{ -+#if IS_ENABLED(CONFIG_MINIX_FS) -+ return sb->s_magic == MINIX3_SUPER_MAGIC -+ || sb->s_magic == MINIX2_SUPER_MAGIC -+ || sb->s_magic == MINIX2_SUPER_MAGIC2 -+ || sb->s_magic == MINIX_SUPER_MAGIC -+ || sb->s_magic == MINIX_SUPER_MAGIC2; -+#else -+ return 0; -+#endif -+} ++ int err; ++ struct au_fsctx_opts *a = fc->fs_private; ++ struct au_sbinfo *sbinfo = a->sbinfo; ++ struct dentry *root; ++ struct inode *inode; + -+static inline int au_test_fat(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_FAT_FS) -+ return sb->s_magic == MSDOS_SUPER_MAGIC; -+#else -+ return 0; -+#endif -+} ++ sbinfo->si_sb = sb; ++ sb->s_fs_info = sbinfo; ++ kobject_get(&sbinfo->si_kobj); + -+static inline int au_test_msdos(struct super_block *sb) -+{ -+ return au_test_fat(sb); -+} ++ __si_write_lock(sb); ++ si_pid_set(sb); ++ au_sbilist_add(sb); + -+static inline int au_test_vfat(struct super_block *sb) -+{ -+ return au_test_fat(sb); -+} ++ /* all timestamps always follow the ones on the branch */ ++ sb->s_flags |= SB_NOATIME | SB_NODIRATIME; ++ sb->s_flags |= SB_I_VERSION; /* do we really need this? */ ++ sb->s_op = &aufs_sop; ++ sb->s_d_op = &aufs_dop; ++ sb->s_magic = AUFS_SUPER_MAGIC; ++ sb->s_maxbytes = 0; ++ sb->s_stack_depth = 1; ++ au_export_init(sb); ++ au_xattr_init(sb); + -+static inline int au_test_securityfs(struct super_block *sb __maybe_unused) -+{ -+#ifdef CONFIG_SECURITYFS -+ return sb->s_magic == SECURITYFS_MAGIC; -+#else -+ return 0; -+#endif -+} ++ err = au_alloc_root(sb); ++ if (unlikely(err)) { ++ si_write_unlock(sb); ++ goto out; ++ } ++ root = sb->s_root; ++ inode = d_inode(root); ++ ii_write_lock_parent(inode); ++ aufs_write_unlock(root); + -+static inline int au_test_squashfs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_SQUASHFS) -+ return sb->s_magic == SQUASHFS_MAGIC; -+#else -+ return 0; -+#endif -+} ++ /* lock vfs_inode first, then aufs. */ ++ inode_lock(inode); ++ aufs_write_lock(root); ++ err = au_opts_mount(sb, &a->opts); ++ AuTraceErr(err); ++ if (!err && au_ftest_si(sbinfo, NO_DREVAL)) { ++ sb->s_d_op = &aufs_dop_noreval; ++ /* infofc(fc, "%ps", sb->s_d_op); */ ++ pr_info("%ps\n", sb->s_d_op); ++ au_refresh_dop(root, /*force_reval*/0); ++ sbinfo->si_iop_array = aufs_iop_nogetattr; ++ au_refresh_iop(inode, /*force_getattr*/0); ++ } ++ aufs_write_unlock(root); ++ inode_unlock(inode); ++ if (!err) ++ goto out; /* success */ + -+static inline int au_test_btrfs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_BTRFS_FS) -+ return sb->s_magic == BTRFS_SUPER_MAGIC; -+#else -+ return 0; -+#endif -+} ++ dput(root); ++ sb->s_root = NULL; + -+static inline int au_test_xenfs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_XENFS) -+ return sb->s_magic == XENFS_SUPER_MAGIC; -+#else -+ return 0; -+#endif ++out: ++ if (unlikely(err)) ++ kobject_put(&sbinfo->si_kobj); ++ AuTraceErr(err); ++ err = cvt_err(err); ++ AuTraceErr(err); ++ return err; +} + -+static inline int au_test_debugfs(struct super_block *sb __maybe_unused) ++static int au_fsctx_get_tree(struct fs_context *fc) +{ -+#ifdef CONFIG_DEBUG_FS -+ return sb->s_magic == DEBUGFS_MAGIC; -+#else -+ return 0; -+#endif -+} ++ int err; + -+static inline int au_test_nilfs(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_NILFS) -+ return sb->s_magic == NILFS_SUPER_MAGIC; -+#else -+ return 0; -+#endif -+} ++ AuDbg("fc %p\n", fc); ++ err = get_tree_nodev(fc, au_fsctx_fill_super); + -+static inline int au_test_hfsplus(struct super_block *sb __maybe_unused) -+{ -+#if IS_ENABLED(CONFIG_HFSPLUS_FS) -+ return sb->s_magic == HFSPLUS_SUPER_MAGIC; -+#else -+ return 0; -+#endif ++ AuTraceErr(err); ++ return err; +} + +/* ---------------------------------------------------------------------- */ -+/* -+ * they can't be an aufs branch. -+ */ -+static inline int au_test_fs_unsuppoted(struct super_block *sb) -+{ -+ return -+#ifndef CONFIG_AUFS_BR_RAMFS -+ au_test_ramfs(sb) || -+#endif -+ au_test_procfs(sb) -+ || au_test_sysfs(sb) -+ || au_test_configfs(sb) -+ || au_test_debugfs(sb) -+ || au_test_securityfs(sb) -+ || au_test_xenfs(sb) -+ || au_test_ecryptfs(sb) -+ /* || !strcmp(au_sbtype(sb), "unionfs") */ -+ || au_test_aufs(sb); /* will be supported in next version */ -+} + -+static inline int au_test_fs_remote(struct super_block *sb) ++static void au_fsctx_dump(struct au_opts *opts) +{ -+ return !au_test_tmpfs(sb) -+#ifdef CONFIG_AUFS_BR_RAMFS -+ && !au_test_ramfs(sb) -+#endif -+ && !(sb->s_type->fs_flags & FS_REQUIRES_DEV); -+} -+ -+/* ---------------------------------------------------------------------- */ ++#ifdef CONFIG_AUFS_DEBUG ++ /* reduce stack space */ ++ union { ++ struct au_opt_add *add; ++ struct au_opt_del *del; ++ struct au_opt_mod *mod; ++ struct au_opt_xino *xino; ++ struct au_opt_xino_itrunc *xino_itrunc; ++ struct au_opt_wbr_create *create; ++ } u; ++ struct au_opt *opt; ++ ++ opt = opts->opt; ++ while (opt->type != Opt_tail) { ++ switch (opt->type) { ++ case Opt_add: ++ u.add = &opt->add; ++ AuDbg("add {b%d, %s, 0x%x, %p}\n", ++ u.add->bindex, u.add->pathname, u.add->perm, ++ u.add->path.dentry); ++ break; ++ case Opt_del: ++ fallthrough; ++ case Opt_idel: ++ u.del = &opt->del; ++ AuDbg("del {%s, %p}\n", ++ u.del->pathname, u.del->h_path.dentry); ++ break; ++ case Opt_mod: ++ fallthrough; ++ case Opt_imod: ++ u.mod = &opt->mod; ++ AuDbg("mod {%s, 0x%x, %p}\n", ++ u.mod->path, u.mod->perm, u.mod->h_root); ++ break; ++ case Opt_append: ++ u.add = &opt->add; ++ AuDbg("append {b%d, %s, 0x%x, %p}\n", ++ u.add->bindex, u.add->pathname, u.add->perm, ++ u.add->path.dentry); ++ break; ++ case Opt_prepend: ++ u.add = &opt->add; ++ AuDbg("prepend {b%d, %s, 0x%x, %p}\n", ++ u.add->bindex, u.add->pathname, u.add->perm, ++ u.add->path.dentry); ++ break; ++ ++ case Opt_dirwh: ++ AuDbg("dirwh %d\n", opt->dirwh); ++ break; ++ case Opt_rdcache: ++ AuDbg("rdcache %d\n", opt->rdcache); ++ break; ++ case Opt_rdblk: ++ AuDbg("rdblk %d\n", opt->rdblk); ++ break; ++ case Opt_rdhash: ++ AuDbg("rdhash %u\n", opt->rdhash); ++ break; ++ ++ case Opt_xino: ++ u.xino = &opt->xino; ++ AuDbg("xino {%s %pD}\n", u.xino->path, u.xino->file); ++ break; ++ ++#define au_fsctx_TF(name) \ ++ case Opt_##name: \ ++ if (opt->tf) \ ++ AuLabel(name); \ ++ else \ ++ AuLabel(no##name); \ ++ break; ++ ++ /* simple true/false flag */ ++ au_fsctx_TF(trunc_xino); ++ au_fsctx_TF(trunc_xib); ++ au_fsctx_TF(dirperm1); ++ au_fsctx_TF(plink); ++ au_fsctx_TF(shwh); ++ au_fsctx_TF(dio); ++ au_fsctx_TF(warn_perm); ++ au_fsctx_TF(verbose); ++ au_fsctx_TF(sum); ++ au_fsctx_TF(dirren); ++ au_fsctx_TF(acl); ++#undef au_fsctx_TF ++ ++ case Opt_trunc_xino_path: ++ fallthrough; ++ case Opt_itrunc_xino: ++ u.xino_itrunc = &opt->xino_itrunc; ++ AuDbg("trunc_xino %d\n", u.xino_itrunc->bindex); ++ break; ++ case Opt_noxino: ++ AuLabel(noxino); ++ break; ++ ++ case Opt_list_plink: ++ AuLabel(list_plink); ++ break; ++ case Opt_udba: ++ AuDbg("udba %d, %s\n", ++ opt->udba, au_optstr_udba(opt->udba)); ++ break; ++ case Opt_diropq_a: ++ AuLabel(diropq_a); ++ break; ++ case Opt_diropq_w: ++ AuLabel(diropq_w); ++ break; ++ case Opt_wsum: ++ AuLabel(wsum); ++ break; ++ case Opt_wbr_create: ++ u.create = &opt->wbr_create; ++ AuDbg("create %d, %s\n", u.create->wbr_create, ++ au_optstr_wbr_create(u.create->wbr_create)); ++ switch (u.create->wbr_create) { ++ case AuWbrCreate_MFSV: ++ fallthrough; ++ case AuWbrCreate_PMFSV: ++ AuDbg("%d sec\n", u.create->mfs_second); ++ break; ++ case AuWbrCreate_MFSRR: ++ fallthrough; ++ case AuWbrCreate_TDMFS: ++ AuDbg("%llu watermark\n", ++ u.create->mfsrr_watermark); ++ break; ++ case AuWbrCreate_MFSRRV: ++ fallthrough; ++ case AuWbrCreate_TDMFSV: ++ fallthrough; ++ case AuWbrCreate_PMFSRRV: ++ AuDbg("%llu watermark, %d sec\n", ++ u.create->mfsrr_watermark, ++ u.create->mfs_second); ++ break; ++ } ++ break; ++ case Opt_wbr_copyup: ++ AuDbg("copyup %d, %s\n", opt->wbr_copyup, ++ au_optstr_wbr_copyup(opt->wbr_copyup)); ++ break; ++ case Opt_fhsm_sec: ++ AuDbg("fhsm_sec %u\n", opt->fhsm_second); ++ break; ++ ++ default: ++ AuDbg("type %d\n", opt->type); ++ BUG(); ++ } ++ opt++; ++ } ++#endif ++} ++ ++/* ---------------------------------------------------------------------- */ ++ ++/* ++ * For conditionally compiled mount options. ++ * Instead of fsparam_flag_no(), use this macro to distinguish ignore_silent. ++ */ ++#define au_ignore_flag(name, action) \ ++ fsparam_flag(name, action), \ ++ fsparam_flag("no" name, Opt_ignore_silent) ++ ++const struct fs_parameter_spec aufs_fsctx_paramspec[] = { ++ fsparam_string("br", Opt_br), ++ ++ /* "add=%d:%s" or "ins=%d:%s" */ ++ fsparam_string("add", Opt_add), ++ fsparam_string("ins", Opt_add), ++ fsparam_path("append", Opt_append), ++ fsparam_path("prepend", Opt_prepend), ++ ++ fsparam_path("del", Opt_del), ++ /* fsparam_s32("idel", Opt_idel), */ ++ fsparam_path("mod", Opt_mod), ++ /* fsparam_string("imod", Opt_imod), */ ++ ++ fsparam_s32("dirwh", Opt_dirwh), ++ ++ fsparam_path("xino", Opt_xino), ++ fsparam_flag("noxino", Opt_noxino), ++ fsparam_flag_no("trunc_xino", Opt_trunc_xino), ++ /* "trunc_xino_v=%d:%d" */ ++ /* fsparam_string("trunc_xino_v", Opt_trunc_xino_v), */ ++ fsparam_path("trunc_xino", Opt_trunc_xino_path), ++ fsparam_s32("itrunc_xino", Opt_itrunc_xino), ++ /* fsparam_path("zxino", Opt_zxino), */ ++ fsparam_flag_no("trunc_xib", Opt_trunc_xib), ++ ++#ifdef CONFIG_PROC_FS ++ fsparam_flag_no("plink", Opt_plink), ++#else ++ au_ignore_flag("plink", Opt_ignore), ++#endif ++ ++#ifdef CONFIG_AUFS_DEBUG ++ fsparam_flag("list_plink", Opt_list_plink), ++#endif ++ ++ fsparam_string("udba", Opt_udba), ++ ++ fsparam_flag_no("dio", Opt_dio), ++ ++#ifdef CONFIG_AUFS_DIRREN ++ fsparam_flag_no("dirren", Opt_dirren), ++#else ++ au_ignore_flag("dirren", Opt_ignore), ++#endif ++ ++#ifdef CONFIG_AUFS_FHSM ++ fsparam_s32("fhsm_sec", Opt_fhsm_sec), ++#else ++ fsparam_s32("fhsm_sec", Opt_ignore), ++#endif ++ ++ /* always | a | whiteouted | w */ ++ fsparam_string("diropq", Opt_diropq), ++ ++ fsparam_flag_no("warn_perm", Opt_warn_perm), ++ ++#ifdef CONFIG_AUFS_SHWH ++ fsparam_flag_no("shwh", Opt_shwh), ++#else ++ au_ignore_flag("shwh", Opt_err), ++#endif ++ ++ fsparam_flag_no("dirperm1", Opt_dirperm1), ++ ++ fsparam_flag_no("verbose", Opt_verbose), ++ fsparam_flag("v", Opt_verbose), ++ fsparam_flag("quiet", Opt_noverbose), ++ fsparam_flag("q", Opt_noverbose), ++ /* user-space may handle this */ ++ fsparam_flag("silent", Opt_noverbose), ++ ++ fsparam_flag_no("sum", Opt_sum), ++ fsparam_flag("wsum", Opt_wsum), ++ ++ fsparam_s32("rdcache", Opt_rdcache), ++ /* "def" or s32 */ ++ fsparam_string("rdblk", Opt_rdblk), ++ /* "def" or s32 */ ++ fsparam_string("rdhash", Opt_rdhash), ++ ++ fsparam_string("create", Opt_wbr_create), ++ fsparam_string("create_policy", Opt_wbr_create), ++ fsparam_string("cpup", Opt_wbr_copyup), ++ fsparam_string("copyup", Opt_wbr_copyup), ++ fsparam_string("copyup_policy", Opt_wbr_copyup), ++ ++ /* generic VFS flag */ ++#ifdef CONFIG_FS_POSIX_ACL ++ fsparam_flag_no("acl", Opt_acl), ++#else ++ au_ignore_flag("acl", Opt_ignore), ++#endif ++ ++ /* internal use for the scripts */ ++ fsparam_string("si", Opt_ignore_silent), ++ ++ /* obsoleted, keep them temporary */ ++ fsparam_flag("nodlgt", Opt_ignore_silent), ++ fsparam_flag("clean_plink", Opt_ignore), ++ fsparam_string("dirs", Opt_br), ++ fsparam_u32("debug", Opt_ignore), ++ /* "whiteout" or "all" */ ++ fsparam_string("delete", Opt_ignore), ++ fsparam_string("imap", Opt_ignore), ++ ++ /* temporary workaround, due to old mount(8)? */ ++ fsparam_flag("relatime", Opt_ignore_silent), ++ ++ {} ++}; ++ ++static int au_fsctx_parse_do_add(struct fs_context *fc, struct au_opt *opt, ++ char *brspec, size_t speclen, ++ aufs_bindex_t bindex) ++{ ++ int err; ++ char *p; ++ ++ AuDbg("brspec %s\n", brspec); ++ ++ err = -ENOMEM; ++ if (!speclen) ++ speclen = strlen(brspec); ++ /* will be freed by au_fsctx_free() */ ++ p = kmemdup_nul(brspec, speclen, GFP_NOFS); ++ if (unlikely(!p)) { ++ errorfc(fc, "failed in %s", brspec); ++ goto out; ++ } ++ err = au_opt_add(opt, p, fc->sb_flags, bindex); ++ ++out: ++ AuTraceErr(err); ++ return err; ++} ++ ++static int au_fsctx_parse_br(struct fs_context *fc, char *brspec) ++{ ++ int err; ++ char *p; ++ struct au_fsctx_opts *a = fc->fs_private; ++ struct au_opt *opt = a->opt; ++ aufs_bindex_t bindex = a->bindex; ++ ++ AuDbg("brspec %s\n", brspec); ++ ++ err = -EINVAL; ++ while ((p = strsep(&brspec, ":")) && *p) { ++ err = au_fsctx_parse_do_add(fc, opt, p, /*len*/0, bindex); ++ AuTraceErr(err); ++ if (unlikely(err)) ++ break; ++ bindex++; ++ opt++; ++ if (unlikely(opt > a->opt_tail)) { ++ err = -E2BIG; ++ bindex--; ++ opt--; ++ break; ++ } ++ opt->type = Opt_tail; ++ a->skipped = 1; ++ } ++ a->bindex = bindex; ++ a->opt = opt; ++ ++ AuTraceErr(err); ++ return err; ++} ++ ++static int au_fsctx_parse_add(struct fs_context *fc, char *addspec) ++{ ++ int err, n; ++ char *p; ++ struct au_fsctx_opts *a = fc->fs_private; ++ struct au_opt *opt = a->opt; ++ ++ err = -EINVAL; ++ p = strchr(addspec, ':'); ++ if (unlikely(!p)) { ++ errorfc(fc, "bad arg in %s", addspec); ++ goto out; ++ } ++ *p++ = '\0'; ++ err = kstrtoint(addspec, 0, &n); ++ if (unlikely(err)) { ++ errorfc(fc, "bad integer in %s", addspec); ++ goto out; ++ } ++ AuDbg("n %d\n", n); ++ err = au_fsctx_parse_do_add(fc, opt, p, /*len*/0, n); ++ ++out: ++ AuTraceErr(err); ++ return err; ++} ++ ++static int au_fsctx_parse_del(struct fs_context *fc, struct au_opt_del *del, ++ struct fs_parameter *param) ++{ ++ int err; ++ ++ err = -ENOMEM; ++ /* will be freed by au_fsctx_free() */ ++ del->pathname = kmemdup_nul(param->string, param->size, GFP_NOFS); ++ if (unlikely(!del->pathname)) ++ goto out; ++ AuDbg("del %s\n", del->pathname); ++ err = vfsub_kern_path(del->pathname, AuOpt_LkupDirFlags, &del->h_path); ++ if (unlikely(err)) ++ errorfc(fc, "lookup failed %s (%d)", del->pathname, err); ++ ++out: ++ AuTraceErr(err); ++ return err; ++} ++ ++#if 0 /* reserved for future use */ ++static int au_fsctx_parse_idel(struct fs_context *fc, struct au_opt_del *del, ++ aufs_bindex_t bindex) ++{ ++ int err; ++ struct super_block *sb; ++ struct dentry *root; ++ struct au_fsctx_opts *a = fc->fs_private; ++ ++ sb = a->sb; ++ AuDebugOn(!sb); ++ ++ err = -EINVAL; ++ root = sb->s_root; ++ aufs_read_lock(root, AuLock_FLUSH); ++ if (bindex < 0 || au_sbbot(sb) < bindex) { ++ errorfc(fc, "out of bounds, %d", bindex); ++ goto out; ++ } ++ ++ err = 0; ++ del->h_path.dentry = dget(au_h_dptr(root, bindex)); ++ del->h_path.mnt = mntget(au_sbr_mnt(sb, bindex)); ++ ++out: ++ aufs_read_unlock(root, !AuLock_IR); ++ AuTraceErr(err); ++ return err; ++} ++#endif ++ ++static int au_fsctx_parse_mod(struct fs_context *fc, struct au_opt_mod *mod, ++ struct fs_parameter *param) ++{ ++ int err; ++ struct path path; ++ char *p; ++ ++ err = -ENOMEM; ++ /* will be freed by au_fsctx_free() */ ++ mod->path = kmemdup_nul(param->string, param->size, GFP_NOFS); ++ if (unlikely(!mod->path)) ++ goto out; ++ ++ err = -EINVAL; ++ p = strchr(mod->path, '='); ++ if (unlikely(!p)) { ++ errorfc(fc, "no permission %s", mod->path); ++ goto out; ++ } ++ ++ *p++ = 0; ++ err = vfsub_kern_path(mod->path, AuOpt_LkupDirFlags, &path); ++ if (unlikely(err)) { ++ errorfc(fc, "lookup failed %s (%d)", mod->path, err); ++ goto out; ++ } ++ ++ mod->perm = au_br_perm_val(p); ++ AuDbg("mod path %s, perm 0x%x, %s", mod->path, mod->perm, p); ++ mod->h_root = dget(path.dentry); ++ path_put(&path); ++ ++out: ++ AuTraceErr(err); ++ return err; ++} ++ ++#if 0 /* reserved for future use */ ++static int au_fsctx_parse_imod(struct fs_context *fc, struct au_opt_mod *mod, ++ char *ibrspec) ++{ ++ int err, n; ++ char *p; ++ struct super_block *sb; ++ struct dentry *root; ++ struct au_fsctx_opts *a = fc->fs_private; ++ ++ sb = a->sb; ++ AuDebugOn(!sb); ++ ++ err = -EINVAL; ++ p = strchr(ibrspec, ':'); ++ if (unlikely(!p)) { ++ errorfc(fc, "no index, %s", ibrspec); ++ goto out; ++ } ++ *p++ = '\0'; ++ err = kstrtoint(ibrspec, 0, &n); ++ if (unlikely(err)) { ++ errorfc(fc, "bad integer in %s", ibrspec); ++ goto out; ++ } ++ AuDbg("n %d\n", n); ++ ++ root = sb->s_root; ++ aufs_read_lock(root, AuLock_FLUSH); ++ if (n < 0 || au_sbbot(sb) < n) { ++ errorfc(fc, "out of bounds, %d", bindex); ++ goto out_root; ++ } ++ ++ err = 0; ++ mod->perm = au_br_perm_val(p); ++ AuDbg("mod path %s, perm 0x%x, %s\n", ++ mod->path, mod->perm, p); ++ mod->h_root = dget(au_h_dptr(root, bindex)); ++ ++out_root: ++ aufs_read_unlock(root, !AuLock_IR); ++out: ++ AuTraceErr(err); ++ return err; ++} ++#endif ++ ++static int au_fsctx_parse_xino(struct fs_context *fc, ++ struct au_opt_xino *xino, ++ struct fs_parameter *param) ++{ ++ int err; ++ struct au_fsctx_opts *a = fc->fs_private; ++ ++ err = -ENOMEM; ++ /* will be freed by au_opts_free() */ ++ xino->path = kmemdup_nul(param->string, param->size, GFP_NOFS); ++ if (unlikely(!xino->path)) ++ goto out; ++ AuDbg("path %s\n", xino->path); ++ ++ xino->file = au_xino_create(a->sb, xino->path, /*silent*/0, ++ /*wbrtop*/0); ++ err = PTR_ERR(xino->file); ++ if (IS_ERR(xino->file)) { ++ xino->file = NULL; ++ goto out; ++ } ++ ++ err = 0; ++ if (unlikely(a->sb && xino->file->f_path.dentry->d_sb == a->sb)) { ++ err = -EINVAL; ++ errorfc(fc, "%s must be outside", xino->path); ++ } ++ ++out: ++ AuTraceErr(err); ++ return err; ++} ++ ++static ++int au_fsctx_parse_xino_itrunc_path(struct fs_context *fc, ++ struct au_opt_xino_itrunc *xino_itrunc, ++ char *pathname) ++{ ++ int err; ++ aufs_bindex_t bbot, bindex; ++ struct path path; ++ struct dentry *root; ++ struct au_fsctx_opts *a = fc->fs_private; ++ ++ AuDebugOn(!a->sb); ++ ++ err = vfsub_kern_path(pathname, AuOpt_LkupDirFlags, &path); ++ if (unlikely(err)) { ++ errorfc(fc, "lookup failed %s (%d)", pathname, err); ++ goto out; ++ } ++ ++ xino_itrunc->bindex = -1; ++ root = a->sb->s_root; ++ aufs_read_lock(root, AuLock_FLUSH); ++ bbot = au_sbbot(a->sb); ++ for (bindex = 0; bindex <= bbot; bindex++) { ++ if (au_h_dptr(root, bindex) == path.dentry) { ++ xino_itrunc->bindex = bindex; ++ break; ++ } ++ } ++ aufs_read_unlock(root, !AuLock_IR); ++ path_put(&path); ++ ++ if (unlikely(xino_itrunc->bindex < 0)) { ++ err = -EINVAL; ++ errorfc(fc, "no such branch %s", pathname); ++ } ++ ++out: ++ AuTraceErr(err); ++ return err; ++} ++ ++static int au_fsctx_parse_xino_itrunc(struct fs_context *fc, ++ struct au_opt_xino_itrunc *xino_itrunc, ++ unsigned int bindex) ++{ ++ int err; ++ aufs_bindex_t bbot; ++ struct super_block *sb; ++ struct au_fsctx_opts *a = fc->fs_private; ++ ++ sb = a->sb; ++ AuDebugOn(!sb); ++ ++ err = 0; ++ si_noflush_read_lock(sb); ++ bbot = au_sbbot(sb); ++ si_read_unlock(sb); ++ if (bindex <= bbot) ++ xino_itrunc->bindex = bindex; ++ else { ++ err = -EINVAL; ++ errorfc(fc, "out of bounds, %u", bindex); ++ } ++ ++ AuTraceErr(err); ++ return err; ++} ++ ++static int au_fsctx_parse_param(struct fs_context *fc, struct fs_parameter *param) ++{ ++ int err, token; ++ struct fs_parse_result result; ++ struct au_fsctx_opts *a = fc->fs_private; ++ struct au_opt *opt = a->opt; ++ ++ AuDbg("fc %p, param {key %s, string %s}\n", ++ fc, param->key, param->string); ++ err = fs_parse(fc, aufs_fsctx_paramspec, param, &result); ++ if (unlikely(err < 0)) ++ goto out; ++ token = err; ++ AuDbg("token %d, res{negated %d, uint64 %llu}\n", ++ token, result.negated, result.uint_64); ++ ++ err = -EINVAL; ++ a->skipped = 0; ++ switch (token) { ++ case Opt_br: ++ err = au_fsctx_parse_br(fc, param->string); ++ break; ++ case Opt_add: ++ err = au_fsctx_parse_add(fc, param->string); ++ break; ++ case Opt_append: ++ err = au_fsctx_parse_do_add(fc, opt, param->string, param->size, ++ /*dummy bindex*/1); ++ break; ++ case Opt_prepend: ++ err = au_fsctx_parse_do_add(fc, opt, param->string, param->size, ++ /*bindex*/0); ++ break; ++ ++ case Opt_del: ++ err = au_fsctx_parse_del(fc, &opt->del, param); ++ break; ++#if 0 /* reserved for future use */ ++ case Opt_idel: ++ if (!a->sb) { ++ err = 0; ++ a->skipped = 1; ++ break; ++ } ++ del->pathname = "(indexed)"; ++ err = au_opts_parse_idel(fc, &opt->del, result.uint_32); ++ break; ++#endif ++ ++ case Opt_mod: ++ err = au_fsctx_parse_mod(fc, &opt->mod, param); ++ break; ++#ifdef IMOD /* reserved for future use */ ++ case Opt_imod: ++ if (!a->sb) { ++ err = 0; ++ a->skipped = 1; ++ break; ++ } ++ u.mod->path = "(indexed)"; ++ err = au_opts_parse_imod(fc, &opt->mod, param->string); ++ break; ++#endif ++ ++ case Opt_xino: ++ err = au_fsctx_parse_xino(fc, &opt->xino, param); ++ break; ++ case Opt_trunc_xino_path: ++ if (!a->sb) { ++ errorfc(fc, "no such branch %s", param->string); ++ break; ++ } ++ err = au_fsctx_parse_xino_itrunc_path(fc, &opt->xino_itrunc, ++ param->string); ++ break; ++#if 0 ++ case Opt_trunc_xino_v: ++ if (!a->sb) { ++ err = 0; ++ a->skipped = 1; ++ break; ++ } ++ err = au_fsctx_parse_xino_itrunc_path(fc, &opt->xino_itrunc, ++ param->string); ++ break; ++#endif ++ case Opt_itrunc_xino: ++ if (!a->sb) { ++ errorfc(fc, "out of bounds %s", param->string); ++ break; ++ } ++ err = au_fsctx_parse_xino_itrunc(fc, &opt->xino_itrunc, ++ result.int_32); ++ break; ++ ++ case Opt_dirwh: ++ err = 0; ++ opt->dirwh = result.int_32; ++ break; ++ ++ case Opt_rdcache: ++ if (unlikely(result.int_32 > AUFS_RDCACHE_MAX)) { ++ errorfc(fc, "rdcache must be smaller than %d", ++ AUFS_RDCACHE_MAX); ++ break; ++ } ++ err = 0; ++ opt->rdcache = result.int_32; ++ break; ++ ++ case Opt_rdblk: ++ err = 0; ++ opt->rdblk = AUFS_RDBLK_DEF; ++ if (!strcmp(param->string, "def")) ++ break; ++ ++ err = kstrtoint(param->string, 0, &result.int_32); ++ if (unlikely(err)) { ++ errorfc(fc, "bad value in %s", param->key); ++ break; ++ } ++ err = -EINVAL; ++ if (unlikely(result.int_32 < 0 ++ || result.int_32 > KMALLOC_MAX_SIZE)) { ++ errorfc(fc, "bad value in %s", param->key); ++ break; ++ } ++ if (unlikely(result.int_32 && result.int_32 < NAME_MAX)) { ++ errorfc(fc, "rdblk must be larger than %d", NAME_MAX); ++ break; ++ } ++ err = 0; ++ opt->rdblk = result.int_32; ++ break; ++ ++ case Opt_rdhash: ++ err = 0; ++ opt->rdhash = AUFS_RDHASH_DEF; ++ if (!strcmp(param->string, "def")) ++ break; ++ ++ err = kstrtoint(param->string, 0, &result.int_32); ++ if (unlikely(err)) { ++ errorfc(fc, "bad value in %s", param->key); ++ break; ++ } ++ /* how about zero? */ ++ if (result.int_32 < 0 ++ || result.int_32 * sizeof(struct hlist_head) ++ > KMALLOC_MAX_SIZE) { ++ err = -EINVAL; ++ errorfc(fc, "bad integer in %s", param->key); ++ break; ++ } ++ opt->rdhash = result.int_32; ++ break; ++ ++ case Opt_diropq: ++ /* ++ * As other options, fs/aufs/opts.c can handle these strings by ++ * match_token(). But "diropq=" is deprecated now and will ++ * never have other value. So simple strcmp() is enough here. ++ */ ++ if (!strcmp(param->string, "a") || ++ !strcmp(param->string, "always")) { ++ err = 0; ++ opt->type = Opt_diropq_a; ++ } else if (!strcmp(param->string, "w") || ++ !strcmp(param->string, "whiteouted")) { ++ err = 0; ++ opt->type = Opt_diropq_w; ++ } else ++ errorfc(fc, "unknown value %s", param->string); ++ break; ++ ++ case Opt_udba: ++ opt->udba = au_udba_val(param->string); ++ if (opt->udba >= 0) ++ err = 0; ++ else ++ errorf(fc, "wrong value, %s", param->string); ++ break; ++ ++ case Opt_wbr_create: ++ opt->wbr_create.wbr_create ++ = au_wbr_create_val(param->string, &opt->wbr_create); ++ if (opt->wbr_create.wbr_create >= 0) ++ err = 0; ++ else ++ errorf(fc, "wrong value, %s", param->key); ++ break; ++ ++ case Opt_wbr_copyup: ++ opt->wbr_copyup = au_wbr_copyup_val(param->string); ++ if (opt->wbr_copyup >= 0) ++ err = 0; ++ else ++ errorfc(fc, "wrong value, %s", param->key); ++ break; ++ ++ case Opt_fhsm_sec: ++ if (unlikely(result.int_32 < 0)) { ++ errorfc(fc, "bad integer in %s\n", param->key); ++ break; ++ } ++ err = 0; ++ if (sysaufs_brs) ++ opt->fhsm_second = result.int_32; ++ else ++ warnfc(fc, "ignored %s %s", param->key, param->string); ++ break; ++ ++ /* simple true/false flag */ ++#define au_fsctx_TF(name) \ ++ case Opt_##name: \ ++ err = 0; \ ++ opt->tf = !result.negated; \ ++ break ++ au_fsctx_TF(trunc_xino); ++ au_fsctx_TF(trunc_xib); ++ au_fsctx_TF(dirperm1); ++ au_fsctx_TF(plink); ++ au_fsctx_TF(shwh); ++ au_fsctx_TF(dio); ++ au_fsctx_TF(warn_perm); ++ au_fsctx_TF(verbose); ++ au_fsctx_TF(sum); ++ au_fsctx_TF(dirren); ++ au_fsctx_TF(acl); ++#undef au_fsctx_TF ++ ++ case Opt_noverbose: ++ err = 0; ++ opt->type = Opt_verbose; ++ opt->tf = false; ++ break; ++ ++ case Opt_noxino: ++ fallthrough; ++ case Opt_list_plink: ++ fallthrough; ++ case Opt_wsum: ++ err = 0; ++ break; ++ ++ case Opt_ignore: ++ warnfc(fc, "ignored %s", param->key); ++ fallthrough; ++ case Opt_ignore_silent: ++ a->skipped = 1; ++ err = 0; ++ break; ++ default: ++ a->skipped = 1; ++ err = -ENOPARAM; ++ break; ++ } ++ if (unlikely(err)) ++ goto out; ++ if (a->skipped) ++ goto out; ++ ++ switch (token) { ++ case Opt_br: ++ fallthrough; ++ case Opt_noverbose: ++ fallthrough; ++ case Opt_diropq: ++ break; ++ default: ++ opt->type = token; ++ break; ++ } ++ opt++; ++ if (unlikely(opt > a->opt_tail)) { ++ err = -E2BIG; ++ opt--; ++ } ++ opt->type = Opt_tail; ++ a->opt = opt; ++ ++out: ++ return err; ++} ++ ++/* ++ * these options accept both 'name=val' and 'name:val' form. ++ * some accept optional '=' in its value. ++ * eg. br:/br1=rw:/br2=ro and br=/br1=rw:/br2=ro ++ */ ++static inline unsigned int is_colonopt(char *str) ++{ ++#define do_test(name) \ ++ if (!strncmp(str, name ":", sizeof(name))) \ ++ return sizeof(name) - 1 ++ do_test("br"); ++ do_test("add"); ++ do_test("ins"); ++ do_test("append"); ++ do_test("prepend"); ++ do_test("del"); ++ /* do_test("idel"); */ ++ do_test("mod"); ++ /* do_test("imod"); */ ++#undef do_test ++ ++ return 0; ++} ++ ++static int au_fsctx_parse_monolithic(struct fs_context *fc, void *data) ++{ ++ int err; ++ unsigned int u; ++ char *str; ++ struct au_fsctx_opts *a = fc->fs_private; ++ ++ str = data; ++ AuDbg("str %s\n", str); ++ while (str) { ++ u = is_colonopt(str); ++ if (u) ++ str[u] = '='; ++ str = strchr(str, ','); ++ if (!str) ++ break; ++ str++; ++ } ++ str = data; ++ AuDbg("str %s\n", str); ++ ++ err = generic_parse_monolithic(fc, str); ++ AuTraceErr(err); ++ au_fsctx_dump(&a->opts); ++ ++ return err; ++} ++ ++/* ---------------------------------------------------------------------- */ ++ ++static void au_fsctx_opts_free(struct au_opts *opts) ++{ ++ struct au_opt *opt; ++ ++ opt = opts->opt; ++ while (opt->type != Opt_tail) { ++ switch (opt->type) { ++ case Opt_add: ++ fallthrough; ++ case Opt_append: ++ fallthrough; ++ case Opt_prepend: ++ kfree(opt->add.pathname); ++ path_put(&opt->add.path); ++ break; ++ case Opt_del: ++ kfree(opt->del.pathname); ++ fallthrough; ++ case Opt_idel: ++ path_put(&opt->del.h_path); ++ break; ++ case Opt_mod: ++ kfree(opt->mod.path); ++ fallthrough; ++ case Opt_imod: ++ dput(opt->mod.h_root); ++ break; ++ case Opt_xino: ++ kfree(opt->xino.path); ++ fput(opt->xino.file); ++ break; ++ } ++ opt++; ++ } ++} ++ ++static void au_fsctx_free(struct fs_context *fc) ++{ ++ struct au_fsctx_opts *a = fc->fs_private; ++ ++ /* fs_type=%p, root=%pD */ ++ AuDbg("fc %p{sb_flags 0x%x, sb_flags_mask 0x%x, purpose %u\n", ++ fc, fc->sb_flags, fc->sb_flags_mask, fc->purpose); ++ ++ kobject_put(&a->sbinfo->si_kobj); ++ au_fsctx_opts_free(&a->opts); ++ free_page((unsigned long)a->opts.opt); ++ au_kfree_rcu(a); ++} ++ ++static const struct fs_context_operations au_fsctx_ops = { ++ .free = au_fsctx_free, ++ .parse_param = au_fsctx_parse_param, ++ .parse_monolithic = au_fsctx_parse_monolithic, ++ .get_tree = au_fsctx_get_tree, ++ .reconfigure = au_fsctx_reconfigure ++ /* ++ * nfs4 requires ->dup()? No. ++ * I don't know what is this ->dup() for. ++ */ ++}; ++ ++int aufs_fsctx_init(struct fs_context *fc) ++{ ++ int err; ++ struct au_fsctx_opts *a; ++ ++ /* fs_type=%p, root=%pD */ ++ AuDbg("fc %p{sb_flags 0x%x, sb_flags_mask 0x%x, purpose %u\n", ++ fc, fc->sb_flags, fc->sb_flags_mask, fc->purpose); ++ ++ /* they will be freed by au_fsctx_free() */ ++ err = -ENOMEM; ++ a = kzalloc(sizeof(*a), GFP_NOFS); ++ if (unlikely(!a)) ++ goto out; ++ a->bindex = 0; ++ a->opts.opt = (void *)__get_free_page(GFP_NOFS); ++ if (unlikely(!a->opts.opt)) ++ goto out_a; ++ a->opt = a->opts.opt; ++ a->opt->type = Opt_tail; ++ a->opts.max_opt = PAGE_SIZE / sizeof(*a->opts.opt); ++ a->opt_tail = a->opt + a->opts.max_opt - 1; ++ a->opts.sb_flags = fc->sb_flags; ++ ++ a->sb = NULL; ++ if (fc->root) { ++ AuDebugOn(fc->purpose != FS_CONTEXT_FOR_RECONFIGURE); ++ a->opts.flags = AuOpts_REMOUNT; ++ a->sb = fc->root->d_sb; ++ a->sbinfo = au_sbi(a->sb); ++ kobject_get(&a->sbinfo->si_kobj); ++ } else { ++ a->sbinfo = au_si_alloc(a->sb); ++ AuDebugOn(!a->sbinfo); ++ err = PTR_ERR(a->sbinfo); ++ if (IS_ERR(a->sbinfo)) ++ goto out_opt; ++ au_rw_write_unlock(&a->sbinfo->si_rwsem); ++ } ++ ++ err = 0; ++ fc->fs_private = a; ++ fc->ops = &au_fsctx_ops; ++ goto out; /* success */ ++ ++out_opt: ++ free_page((unsigned long)a->opts.opt); ++out_a: ++ au_kfree_rcu(a); ++out: ++ AuTraceErr(err); ++ return err; ++} +diff -urN /usr/share/empty/fs/aufs/fstype.h linux/fs/aufs/fstype.h +--- /usr/share/empty/fs/aufs/fstype.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux/fs/aufs/fstype.h 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,401 @@ ++/* SPDX-License-Identifier: GPL-2.0 */ ++/* ++ * Copyright (C) 2005-2021 Junjiro R. Okajima ++ * ++ * This program, aufs is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program. If not, see . ++ */ ++ ++/* ++ * judging filesystem type ++ */ ++ ++#ifndef __AUFS_FSTYPE_H__ ++#define __AUFS_FSTYPE_H__ ++ ++#ifdef __KERNEL__ ++ ++#include ++#include ++#include ++#include ++ ++static inline int au_test_aufs(struct super_block *sb) ++{ ++ return sb->s_magic == AUFS_SUPER_MAGIC; ++} ++ ++static inline const char *au_sbtype(struct super_block *sb) ++{ ++ return sb->s_type->name; ++} ++ ++static inline int au_test_iso9660(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_ISO9660_FS) ++ return sb->s_magic == ISOFS_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_romfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_ROMFS_FS) ++ return sb->s_magic == ROMFS_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_cramfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_CRAMFS) ++ return sb->s_magic == CRAMFS_MAGIC; ++#endif ++ return 0; ++} ++ ++static inline int au_test_nfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_NFS_FS) ++ return sb->s_magic == NFS_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_fuse(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_FUSE_FS) ++ return sb->s_magic == FUSE_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_xfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_XFS_FS) ++ return sb->s_magic == XFS_SB_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_tmpfs(struct super_block *sb __maybe_unused) ++{ ++#ifdef CONFIG_TMPFS ++ return sb->s_magic == TMPFS_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_ecryptfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_ECRYPT_FS) ++ return !strcmp(au_sbtype(sb), "ecryptfs"); ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_ramfs(struct super_block *sb) ++{ ++ return sb->s_magic == RAMFS_MAGIC; ++} ++ ++static inline int au_test_ubifs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_UBIFS_FS) ++ return sb->s_magic == UBIFS_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_procfs(struct super_block *sb __maybe_unused) ++{ ++#ifdef CONFIG_PROC_FS ++ return sb->s_magic == PROC_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_sysfs(struct super_block *sb __maybe_unused) ++{ ++#ifdef CONFIG_SYSFS ++ return sb->s_magic == SYSFS_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_configfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_CONFIGFS_FS) ++ return sb->s_magic == CONFIGFS_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_minix(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_MINIX_FS) ++ return sb->s_magic == MINIX3_SUPER_MAGIC ++ || sb->s_magic == MINIX2_SUPER_MAGIC ++ || sb->s_magic == MINIX2_SUPER_MAGIC2 ++ || sb->s_magic == MINIX_SUPER_MAGIC ++ || sb->s_magic == MINIX_SUPER_MAGIC2; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_fat(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_FAT_FS) ++ return sb->s_magic == MSDOS_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_msdos(struct super_block *sb) ++{ ++ return au_test_fat(sb); ++} ++ ++static inline int au_test_vfat(struct super_block *sb) ++{ ++ return au_test_fat(sb); ++} ++ ++static inline int au_test_securityfs(struct super_block *sb __maybe_unused) ++{ ++#ifdef CONFIG_SECURITYFS ++ return sb->s_magic == SECURITYFS_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_squashfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_SQUASHFS) ++ return sb->s_magic == SQUASHFS_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_btrfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_BTRFS_FS) ++ return sb->s_magic == BTRFS_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_xenfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_XENFS) ++ return sb->s_magic == XENFS_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_debugfs(struct super_block *sb __maybe_unused) ++{ ++#ifdef CONFIG_DEBUG_FS ++ return sb->s_magic == DEBUGFS_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_nilfs(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_NILFS) ++ return sb->s_magic == NILFS_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++static inline int au_test_hfsplus(struct super_block *sb __maybe_unused) ++{ ++#if IS_ENABLED(CONFIG_HFSPLUS_FS) ++ return sb->s_magic == HFSPLUS_SUPER_MAGIC; ++#else ++ return 0; ++#endif ++} ++ ++/* ---------------------------------------------------------------------- */ ++/* ++ * they can't be an aufs branch. ++ */ ++static inline int au_test_fs_unsuppoted(struct super_block *sb) ++{ ++ return ++#ifndef CONFIG_AUFS_BR_RAMFS ++ au_test_ramfs(sb) || ++#endif ++ au_test_procfs(sb) ++ || au_test_sysfs(sb) ++ || au_test_configfs(sb) ++ || au_test_debugfs(sb) ++ || au_test_securityfs(sb) ++ || au_test_xenfs(sb) ++ || au_test_ecryptfs(sb) ++ /* || !strcmp(au_sbtype(sb), "unionfs") */ ++ || au_test_aufs(sb); /* will be supported in next version */ ++} ++ ++static inline int au_test_fs_remote(struct super_block *sb) ++{ ++ return !au_test_tmpfs(sb) ++#ifdef CONFIG_AUFS_BR_RAMFS ++ && !au_test_ramfs(sb) ++#endif ++ && !(sb->s_type->fs_flags & FS_REQUIRES_DEV); ++} ++ ++/* ---------------------------------------------------------------------- */ + +/* + * Note: these functions (below) are created after reading ->getattr() in all @@ -16726,11 +17836,11 @@ diff -urN /usr/share/empty/fs/aufs/fstype.h linux/fs/aufs/fstype.h +#endif /* __AUFS_FSTYPE_H__ */ diff -urN /usr/share/empty/fs/aufs/hbl.h linux/fs/aufs/hbl.h --- /usr/share/empty/fs/aufs/hbl.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/hbl.h 2020-01-27 10:57:18.172204883 +0100 ++++ linux/fs/aufs/hbl.h 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2017-2020 Junjiro R. Okajima ++ * Copyright (C) 2017-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -16795,11 +17905,11 @@ diff -urN /usr/share/empty/fs/aufs/hbl.h linux/fs/aufs/hbl.h +#endif /* __AUFS_HBL_H__ */ diff -urN /usr/share/empty/fs/aufs/hfsnotify.c linux/fs/aufs/hfsnotify.c --- /usr/share/empty/fs/aufs/hfsnotify.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/hfsnotify.c 2020-01-27 10:57:18.172204883 +0100 -@@ -0,0 +1,288 @@ ++++ linux/fs/aufs/hfsnotify.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,290 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -16959,8 +18069,8 @@ diff -urN /usr/share/empty/fs/aufs/hfsnotify.c linux/fs/aufs/hfsnotify.c +} + +static int au_hfsn_handle_event(struct fsnotify_group *group, -+ struct inode *inode, + u32 mask, const void *data, int data_type, ++ struct inode *dir, + const struct qstr *file_name, u32 cookie, + struct fsnotify_iter_info *iter_info) +{ @@ -16969,7 +18079,8 @@ diff -urN /usr/share/empty/fs/aufs/hfsnotify.c linux/fs/aufs/hfsnotify.c + struct inode *h_dir, *h_inode; + struct fsnotify_mark *inode_mark; + -+ AuDebugOn(data_type != FSNOTIFY_EVENT_INODE); ++ AuDebugOn(!(data_type == FSNOTIFY_EVENT_INODE ++ || data_type == FSNOTIFY_EVENT_DENTRY)); + + err = 0; + /* if FS_UNMOUNT happens, there must be another bug */ @@ -16977,7 +18088,7 @@ diff -urN /usr/share/empty/fs/aufs/hfsnotify.c linux/fs/aufs/hfsnotify.c + if (mask & (FS_IN_IGNORED | FS_UNMOUNT)) + goto out; + -+ h_dir = inode; ++ h_dir = dir; + h_inode = NULL; +#ifdef AuDbgHnotify + au_debug_on(); @@ -17037,7 +18148,8 @@ diff -urN /usr/share/empty/fs/aufs/hfsnotify.c linux/fs/aufs/hfsnotify.c + goto out; + + err = 0; -+ group = fsnotify_alloc_group(&au_hfsn_ops); ++ group = fsnotify_alloc_group(&au_hfsn_ops, ++ /*flags - not for userspace*/0); + if (IS_ERR(group)) { + err = PTR_ERR(group); + pr_err("fsnotify_alloc_group() failed, %d\n", err); @@ -17087,11 +18199,11 @@ diff -urN /usr/share/empty/fs/aufs/hfsnotify.c linux/fs/aufs/hfsnotify.c +}; diff -urN /usr/share/empty/fs/aufs/hfsplus.c linux/fs/aufs/hfsplus.c --- /usr/share/empty/fs/aufs/hfsplus.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/hfsplus.c 2020-01-27 10:57:18.172204883 +0100 ++++ linux/fs/aufs/hfsplus.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2010-2020 Junjiro R. Okajima ++ * Copyright (C) 2010-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -17151,11 +18263,11 @@ diff -urN /usr/share/empty/fs/aufs/hfsplus.c linux/fs/aufs/hfsplus.c +} diff -urN /usr/share/empty/fs/aufs/hnotify.c linux/fs/aufs/hnotify.c --- /usr/share/empty/fs/aufs/hnotify.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/hnotify.c 2020-01-27 10:57:18.172204883 +0100 ++++ linux/fs/aufs/hnotify.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,715 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -17739,7 +18851,7 @@ diff -urN /usr/share/empty/fs/aufs/hnotify.c linux/fs/aufs/hnotify.c + case FS_MOVED_TO: + au_fset_hnjob(flags[AuHn_CHILD], XINO0); + au_fset_hnjob(flags[AuHn_CHILD], MNTPNT); -+ /*FALLTHROUGH*/ ++ fallthrough; + case FS_CREATE: + AuDebugOn(!h_child_name); + break; @@ -17870,11 +18982,11 @@ diff -urN /usr/share/empty/fs/aufs/hnotify.c linux/fs/aufs/hnotify.c +} diff -urN /usr/share/empty/fs/aufs/iinfo.c linux/fs/aufs/iinfo.c --- /usr/share/empty/fs/aufs/iinfo.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/iinfo.c 2020-01-27 10:57:18.175538316 +0100 ++++ linux/fs/aufs/iinfo.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,286 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -18160,11 +19272,11 @@ diff -urN /usr/share/empty/fs/aufs/iinfo.c linux/fs/aufs/iinfo.c +} diff -urN /usr/share/empty/fs/aufs/inode.c linux/fs/aufs/inode.c --- /usr/share/empty/fs/aufs/inode.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/inode.c 2020-01-27 10:57:18.175538316 +0100 -@@ -0,0 +1,529 @@ ++++ linux/fs/aufs/inode.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,531 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -18676,28 +19788,30 @@ diff -urN /usr/share/empty/fs/aufs/inode.c linux/fs/aufs/inode.c + return err; +} + -+int au_test_h_perm(struct inode *h_inode, int mask) ++int au_test_h_perm(struct user_namespace *h_userns, struct inode *h_inode, ++ int mask) +{ + if (uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) + return 0; -+ return inode_permission(h_inode, mask); ++ return inode_permission(h_userns, h_inode, mask); +} + -+int au_test_h_perm_sio(struct inode *h_inode, int mask) ++int au_test_h_perm_sio(struct user_namespace *h_userns, struct inode *h_inode, ++ int mask) +{ + if (au_test_nfs(h_inode->i_sb) + && (mask & MAY_WRITE) + && S_ISDIR(h_inode->i_mode)) + mask |= MAY_READ; /* force permission check */ -+ return au_test_h_perm(h_inode, mask); ++ return au_test_h_perm(h_userns, h_inode, mask); +} diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h --- /usr/share/empty/fs/aufs/inode.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/inode.h 2020-08-03 09:14:46.095748745 +0200 -@@ -0,0 +1,698 @@ ++++ linux/fs/aufs/inode.h 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,705 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -18834,8 +19948,10 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h +struct inode *au_new_inode(struct dentry *dentry, int must_new); +int au_test_ro(struct super_block *sb, aufs_bindex_t bindex, + struct inode *inode); -+int au_test_h_perm(struct inode *h_inode, int mask); -+int au_test_h_perm_sio(struct inode *h_inode, int mask); ++int au_test_h_perm(struct user_namespace *h_userns, struct inode *h_inode, ++ int mask); ++int au_test_h_perm_sio(struct user_namespace *h_userns, struct inode *h_inode, ++ int mask); + +static inline int au_wh_ino(struct super_block *sb, aufs_bindex_t bindex, + ino_t h_ino, unsigned int d_type, ino_t *ino) @@ -18910,18 +20026,21 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h +/* i_op_add.c */ +int au_may_add(struct dentry *dentry, aufs_bindex_t bindex, + struct dentry *h_parent, int isdir); -+int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, -+ dev_t dev); -+int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname); -+int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode, -+ bool want_excl); ++int aufs_mknod(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, umode_t mode, dev_t dev); ++int aufs_symlink(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, const char *symname); ++int aufs_create(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, umode_t mode, bool want_excl); +struct vfsub_aopen_args; +int au_aopen_or_create(struct inode *dir, struct dentry *dentry, + struct vfsub_aopen_args *args); -+int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode); ++int aufs_tmpfile(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, umode_t mode); +int aufs_link(struct dentry *src_dentry, struct inode *dir, + struct dentry *dentry); -+int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); ++int aufs_mkdir(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, umode_t mode); + +/* i_op_del.c */ +int au_wr_dir_need_wh(struct dentry *dentry, int isdir, aufs_bindex_t *bcpup); @@ -18932,9 +20051,10 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h + +/* i_op_ren.c */ +int au_wbr(struct dentry *dentry, aufs_bindex_t btgt); -+int aufs_rename(struct inode *src_dir, struct dentry *src_dentry, -+ struct inode *dir, struct dentry *dentry, -+ unsigned int flags); ++int aufs_rename(struct user_namespace *userns, ++ struct inode *_src_dir, struct dentry *_src_dentry, ++ struct inode *_dst_dir, struct dentry *_dst_dentry, ++ unsigned int _flags); + +/* iinfo.c */ +struct inode *au_h_iptr(struct inode *inode, aufs_bindex_t bindex); @@ -19004,19 +20124,20 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h + +#ifdef CONFIG_AUFS_XATTR +/* xattr.c */ -+int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags, ++int au_cpup_xattr(struct path *h_dst, struct path *h_src, int ignore_flags, + unsigned int verbose); +ssize_t aufs_listxattr(struct dentry *dentry, char *list, size_t size); +void au_xattr_init(struct super_block *sb); +#else -+AuStubInt0(au_cpup_xattr, struct dentry *h_dst, struct dentry *h_src, ++AuStubInt0(au_cpup_xattr, struct path *h_dst, struct path *h_src, + int ignore_flags, unsigned int verbose); +AuStubVoid(au_xattr_init, struct super_block *sb); +#endif + +#ifdef CONFIG_FS_POSIX_ACL -+struct posix_acl *aufs_get_acl(struct inode *inode, int type); -+int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type); ++struct posix_acl *aufs_get_acl(struct inode *inode, int type, bool rcu); ++int aufs_set_acl(struct user_namespace *userns, struct inode *inode, ++ struct posix_acl *acl, int type); +#endif + +#if IS_ENABLED(CONFIG_AUFS_XATTR) || IS_ENABLED(CONFIG_FS_POSIX_ACL) @@ -19290,7 +20411,7 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h + int (*alloc)(struct au_hinode *hinode); + + /* -+ * if it returns true, the the caller should free hinode->hi_notify, ++ * if it returns true, the caller should free hinode->hi_notify, + * otherwise ->free() frees it. + */ + int (*free)(struct au_hinode *hinode, @@ -19395,11 +20516,11 @@ diff -urN /usr/share/empty/fs/aufs/inode.h linux/fs/aufs/inode.h +#endif /* __AUFS_INODE_H__ */ diff -urN /usr/share/empty/fs/aufs/ioctl.c linux/fs/aufs/ioctl.c --- /usr/share/empty/fs/aufs/ioctl.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/ioctl.c 2020-01-27 10:57:18.175538316 +0100 ++++ linux/fs/aufs/ioctl.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,220 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -19619,11 +20740,11 @@ diff -urN /usr/share/empty/fs/aufs/ioctl.c linux/fs/aufs/ioctl.c +#endif diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c --- /usr/share/empty/fs/aufs/i_op_add.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/i_op_add.c 2020-01-27 10:57:18.172204883 +0100 -@@ -0,0 +1,936 @@ ++++ linux/fs/aufs/i_op_add.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,941 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -19989,8 +21110,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c + return err; +} + -+int aufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, -+ dev_t dev) ++int aufs_mknod(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, umode_t mode, dev_t dev) +{ + struct simple_arg arg = { + .type = Mknod, @@ -20002,7 +21123,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c + return add_simple(dir, dentry, &arg); +} + -+int aufs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) ++int aufs_symlink(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, const char *symname) +{ + struct simple_arg arg = { + .type = Symlink, @@ -20011,8 +21133,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c + return add_simple(dir, dentry, &arg); +} + -+int aufs_create(struct inode *dir, struct dentry *dentry, umode_t mode, -+ bool want_excl) ++int aufs_create(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, umode_t mode, bool want_excl) +{ + struct simple_arg arg = { + .type = Creat, @@ -20039,7 +21161,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c + return add_simple(dir, dentry, &arg); +} + -+int aufs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) ++int aufs_tmpfile(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, umode_t mode) +{ + int err; + aufs_bindex_t bindex; @@ -20047,6 +21170,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c + struct dentry *parent, *h_parent, *h_dentry; + struct inode *h_dir, *inode; + struct vfsmount *h_mnt; ++ struct user_namespace *h_userns; + struct au_wr_dir_args wr_dir_args = { + .force_btgt = -1, + .flags = AuWrDir_TMPFILE @@ -20093,8 +21217,9 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c + if (unlikely(err)) + goto out_parent; + ++ h_userns = mnt_user_ns(h_mnt); + h_parent = au_h_dptr(parent, bindex); -+ h_dentry = vfs_tmpfile(h_parent, mode, /*open_flag*/0); ++ h_dentry = vfs_tmpfile(h_userns, h_parent, mode, /*open_flag*/0); + if (IS_ERR(h_dentry)) { + err = PTR_ERR(h_dentry); + goto out_mnt; @@ -20450,7 +21575,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c + return err; +} + -+int aufs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) ++int aufs_mkdir(struct user_namespace *userns, struct inode *dir, ++ struct dentry *dentry, umode_t mode) +{ + int err, rerr; + aufs_bindex_t bindex; @@ -20559,11 +21685,11 @@ diff -urN /usr/share/empty/fs/aufs/i_op_add.c linux/fs/aufs/i_op_add.c +} diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c --- /usr/share/empty/fs/aufs/i_op.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/i_op.c 2020-08-03 09:14:46.095748745 +0200 -@@ -0,0 +1,1502 @@ ++++ linux/fs/aufs/i_op.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,1512 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -20586,7 +21712,6 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c +#include +#include +#include -+#include +#include +#include "aufs.h" + @@ -20595,6 +21720,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c +{ + int err; + const unsigned char write_mask = !!(mask & (MAY_WRITE | MAY_APPEND)); ++ struct user_namespace *h_userns; + + err = -EPERM; + if (write_mask && IS_IMMUTABLE(h_inode)) @@ -20614,19 +21740,21 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c + * - nfs always sets SB_POSIXACL regardless its mount option 'noacl.' + * in this case, generic_permission() returns -EOPNOTSUPP. + */ ++ h_userns = mnt_user_ns(h_path->mnt); + if ((write_mask && !au_br_writable(brperm)) + || (au_test_nfs(h_inode->i_sb) && S_ISDIR(h_inode->i_mode) + && write_mask && !(mask & MAY_READ)) + || !h_inode->i_op->permission) { + /* AuLabel(generic_permission); */ + /* AuDbg("get_acl %ps\n", h_inode->i_op->get_acl); */ -+ err = generic_permission(h_inode, mask); ++ err = generic_permission(h_userns, h_inode, mask); + if (err == -EOPNOTSUPP && au_test_nfs_noacl(h_inode)) -+ err = h_inode->i_op->permission(h_inode, mask); ++ err = h_inode->i_op->permission(h_userns, h_inode, ++ mask); + AuTraceErr(err); + } else { + /* AuLabel(h_inode->permission); */ -+ err = h_inode->i_op->permission(h_inode, mask); ++ err = h_inode->i_op->permission(h_userns, h_inode, mask); + AuTraceErr(err); + } + @@ -20639,7 +21767,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c + return err; +} + -+static int aufs_permission(struct inode *inode, int mask) ++static int aufs_permission(struct user_namespace *userns, struct inode *inode, ++ int mask) +{ + int err; + aufs_bindex_t bindex, bbot; @@ -21487,18 +22616,20 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c + return err; +} + -+static int aufs_setattr(struct dentry *dentry, struct iattr *ia) ++static int aufs_setattr(struct user_namespace *userns, struct dentry *dentry, ++ struct iattr *ia) +{ + int err; + struct inode *inode, *delegated; + struct super_block *sb; + struct file *file; + struct au_icpup_args *a; ++ struct user_namespace *h_userns; + + inode = d_inode(dentry); + IMustLock(inode); + -+ err = setattr_prepare(dentry, ia); ++ err = setattr_prepare(userns, dentry, ia); + if (unlikely(err)) + goto out; + @@ -21591,8 +22722,10 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c + * regardless aufs 'acl' option setting. + * why don't all acl-aware fs call this func from their ->setattr()? + */ -+ if (!err && (ia->ia_valid & ATTR_MODE)) -+ err = vfsub_acl_chmod(a->h_inode, ia->ia_mode); ++ if (!err && (ia->ia_valid & ATTR_MODE)) { ++ h_userns = mnt_user_ns(a->h_path.mnt); ++ err = vfsub_acl_chmod(h_userns, a->h_inode, ia->ia_mode); ++ } + if (!err) + au_cpup_attr_changeable(inode); + @@ -21654,6 +22787,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c + struct super_block *sb; + struct au_icpup_args *a; + struct inode *h_inode; ++ struct user_namespace *h_userns; + + IMustLock(inode); + @@ -21672,23 +22806,25 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c + err = au_h_path_to_set_attr(dentry, a, &h_path); + if (unlikely(err)) + goto out_di; ++ h_userns = mnt_user_ns(h_path.mnt); + + inode_unlock(a->h_inode); + switch (arg->type) { + case AU_XATTR_SET: + AuDebugOn(d_is_negative(h_path.dentry)); -+ err = vfsub_setxattr(h_path.dentry, ++ err = vfsub_setxattr(h_userns, h_path.dentry, + arg->u.set.name, arg->u.set.value, + arg->u.set.size, arg->u.set.flags); + break; + case AU_ACL_SET: + err = -EOPNOTSUPP; + h_inode = d_inode(h_path.dentry); -+ if (h_inode->i_op->set_acl) ++ if (h_inode->i_op->set_acl) { + /* this will call posix_acl_update_mode */ -+ err = h_inode->i_op->set_acl(h_inode, ++ err = h_inode->i_op->set_acl(h_userns, h_inode, + arg->u.acl_set.acl, + arg->u.acl_set.type); ++ } + break; + } + if (!err) @@ -21819,8 +22955,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c + return err; +} + -+static int aufs_getattr(const struct path *path, struct kstat *st, -+ u32 request, unsigned int query) ++static int aufs_getattr(struct user_namespace *userns, const struct path *path, ++ struct kstat *st, u32 request, unsigned int query) +{ + int err; + unsigned char positive; @@ -21857,7 +22993,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c + goto out_di; + +out_fill: -+ generic_fillattr(inode, st); ++ generic_fillattr(userns, inode, st); +out_di: + di_read_unlock(dentry, AuLock_IR); +out_si: @@ -22065,11 +23201,11 @@ diff -urN /usr/share/empty/fs/aufs/i_op.c linux/fs/aufs/i_op.c +}; diff -urN /usr/share/empty/fs/aufs/i_op_del.c linux/fs/aufs/i_op_del.c --- /usr/share/empty/fs/aufs/i_op_del.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/i_op_del.c 2020-01-27 10:57:18.172204883 +0100 -@@ -0,0 +1,513 @@ ++++ linux/fs/aufs/i_op_del.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,522 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -22163,6 +23299,10 @@ diff -urN /usr/share/empty/fs/aufs/i_op_del.c linux/fs/aufs/i_op_del.c + umode_t h_mode; + struct dentry *h_dentry, *h_latest; + struct inode *h_inode; ++ struct path h_ppath; ++ struct super_block *sb; ++ struct au_branch *br; ++ struct user_namespace *h_userns; + + h_dentry = au_h_dptr(dentry, bindex); + if (d_really_is_positive(dentry)) { @@ -22200,12 +23340,17 @@ diff -urN /usr/share/empty/fs/aufs/i_op_del.c linux/fs/aufs/i_op_del.c + * let's try heavy test. + */ + err = -EACCES; -+ if (unlikely(!au_opt_test(au_mntflags(dentry->d_sb), DIRPERM1) -+ && au_test_h_perm(d_inode(h_parent), ++ sb = dentry->d_sb; ++ br = au_sbr(sb, bindex); ++ h_userns = au_br_userns(br); ++ if (unlikely(!au_opt_test(au_mntflags(sb), DIRPERM1) ++ && au_test_h_perm(h_userns, d_inode(h_parent), + MAY_EXEC | MAY_WRITE))) + goto out; + -+ h_latest = au_sio_lkup_one(&dentry->d_name, h_parent); ++ h_ppath.dentry = h_parent; ++ h_ppath.mnt = au_br_mnt(br); ++ h_latest = au_sio_lkup_one(h_userns, &dentry->d_name, &h_ppath); + err = -EIO; + if (IS_ERR(h_latest)) + goto out; @@ -22582,11 +23727,11 @@ diff -urN /usr/share/empty/fs/aufs/i_op_del.c linux/fs/aufs/i_op_del.c +} diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c --- /usr/share/empty/fs/aufs/i_op_ren.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/i_op_ren.c 2020-01-27 10:57:18.172204883 +0100 -@@ -0,0 +1,1250 @@ ++++ linux/fs/aufs/i_op_ren.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,1257 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -22736,9 +23881,12 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c +{ + int rerr; + struct inode *delegated; ++ struct path h_ppath = { ++ .dentry = a->src_h_parent, ++ .mnt = a->h_path.mnt ++ }; + -+ a->h_path.dentry = vfsub_lkup_one(&a->src_dentry->d_name, -+ a->src_h_parent); ++ a->h_path.dentry = vfsub_lkup_one(&a->src_dentry->d_name, &h_ppath); + rerr = PTR_ERR(a->h_path.dentry); + if (IS_ERR(a->h_path.dentry)) { + RevertFailure("lkup one %pd", a->src_dentry); @@ -22765,9 +23913,12 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c +{ + int rerr; + struct inode *delegated; ++ struct path h_ppath = { ++ .dentry = a->dst_h_parent, ++ .mnt = a->h_path.mnt ++ }; + -+ a->h_path.dentry = vfsub_lkup_one(&a->dst_dentry->d_name, -+ a->dst_h_parent); ++ a->h_path.dentry = vfsub_lkup_one(&a->dst_dentry->d_name, &h_ppath); + rerr = PTR_ERR(a->h_path.dentry); + if (IS_ERR(a->h_path.dentry)) { + RevertFailure("lkup one %pd", a->dst_dentry); @@ -23539,7 +24690,8 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c + +/* ---------------------------------------------------------------------- */ + -+int aufs_rename(struct inode *_src_dir, struct dentry *_src_dentry, ++int aufs_rename(struct user_namespace *userns, ++ struct inode *_src_dir, struct dentry *_src_dentry, + struct inode *_dst_dir, struct dentry *_dst_dentry, + unsigned int _flags) +{ @@ -23836,7 +24988,7 @@ diff -urN /usr/share/empty/fs/aufs/i_op_ren.c linux/fs/aufs/i_op_ren.c +} diff -urN /usr/share/empty/fs/aufs/Kconfig linux/fs/aufs/Kconfig --- /usr/share/empty/fs/aufs/Kconfig 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/Kconfig 2019-07-11 15:42:14.458904362 +0200 ++++ linux/fs/aufs/Kconfig 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,199 @@ +# SPDX-License-Identifier: GPL-2.0 +config AUFS_FS @@ -23964,7 +25116,7 @@ diff -urN /usr/share/empty/fs/aufs/Kconfig linux/fs/aufs/Kconfig + his child on the lower branch, since it is a bad idea to issue + rename(2) internally for every lower branch. But user may not + accept this behaviour. So here is a workaround to allow such -+ rename(2) and store some extra infromation on the writable ++ rename(2) and store some extra information on the writable + branch. Obviously this costs high (and I don't like it). + To use this feature, you need to enable this configuration AND + to specify the mount option `dirren.' @@ -24039,11 +25191,11 @@ diff -urN /usr/share/empty/fs/aufs/Kconfig linux/fs/aufs/Kconfig +endif diff -urN /usr/share/empty/fs/aufs/lcnt.h linux/fs/aufs/lcnt.h --- /usr/share/empty/fs/aufs/lcnt.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/lcnt.h 2020-01-27 10:57:18.175538316 +0100 ++++ linux/fs/aufs/lcnt.h 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,186 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2018-2020 Junjiro R. Okajima ++ * Copyright (C) 2018-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -24229,11 +25381,11 @@ diff -urN /usr/share/empty/fs/aufs/lcnt.h linux/fs/aufs/lcnt.h +#endif /* __AUFS_LCNT_H__ */ diff -urN /usr/share/empty/fs/aufs/loop.c linux/fs/aufs/loop.c --- /usr/share/empty/fs/aufs/loop.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/loop.c 2020-01-27 10:57:18.175538316 +0100 ++++ linux/fs/aufs/loop.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,148 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -24381,11 +25533,11 @@ diff -urN /usr/share/empty/fs/aufs/loop.c linux/fs/aufs/loop.c +} diff -urN /usr/share/empty/fs/aufs/loop.h linux/fs/aufs/loop.h --- /usr/share/empty/fs/aufs/loop.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/loop.h 2020-01-27 10:57:18.175538316 +0100 ++++ linux/fs/aufs/loop.h 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,55 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -24440,7 +25592,7 @@ diff -urN /usr/share/empty/fs/aufs/loop.h linux/fs/aufs/loop.h +#endif /* __AUFS_LOOP_H__ */ diff -urN /usr/share/empty/fs/aufs/magic.mk linux/fs/aufs/magic.mk --- /usr/share/empty/fs/aufs/magic.mk 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/magic.mk 2019-07-11 15:42:14.468904634 +0200 ++++ linux/fs/aufs/magic.mk 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,31 @@ +# SPDX-License-Identifier: GPL-2.0 + @@ -24475,7 +25627,7 @@ diff -urN /usr/share/empty/fs/aufs/magic.mk linux/fs/aufs/magic.mk +endif diff -urN /usr/share/empty/fs/aufs/Makefile linux/fs/aufs/Makefile --- /usr/share/empty/fs/aufs/Makefile 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/Makefile 2019-07-11 15:42:14.462237786 +0200 ++++ linux/fs/aufs/Makefile 2022-08-02 12:12:45.162308621 +0200 @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: GPL-2.0 + @@ -24496,7 +25648,7 @@ diff -urN /usr/share/empty/fs/aufs/Makefile linux/fs/aufs/Makefile +endif + +obj-$(CONFIG_AUFS_FS) += aufs.o -+aufs-y := module.o sbinfo.o super.o branch.o xino.o sysaufs.o opts.o \ ++aufs-y := module.o sbinfo.o super.o branch.o xino.o sysaufs.o opts.o fsctx.o \ + wkq.o vfsub.o dcsub.o \ + cpup.o whout.o wbr_policy.o \ + dinfo.o dentry.o \ @@ -24525,11 +25677,11 @@ diff -urN /usr/share/empty/fs/aufs/Makefile linux/fs/aufs/Makefile +aufs-$(CONFIG_AUFS_MAGIC_SYSRQ) += sysrq.o diff -urN /usr/share/empty/fs/aufs/module.c linux/fs/aufs/module.c --- /usr/share/empty/fs/aufs/module.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/module.c 2020-01-27 10:57:18.175538316 +0100 ++++ linux/fs/aufs/module.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,273 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -24802,11 +25954,11 @@ diff -urN /usr/share/empty/fs/aufs/module.c linux/fs/aufs/module.c +module_exit(aufs_exit); diff -urN /usr/share/empty/fs/aufs/module.h linux/fs/aufs/module.h --- /usr/share/empty/fs/aufs/module.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/module.h 2020-01-27 10:57:18.175538316 +0100 -@@ -0,0 +1,166 @@ ++++ linux/fs/aufs/module.h 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,180 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -24903,7 +26055,7 @@ diff -urN /usr/share/empty/fs/aufs/module.h linux/fs/aufs/module.h +static inline int au_kmidx_sub(size_t sz, size_t new_sz) +{ +#ifndef CONFIG_SLOB -+ return kmalloc_index(sz) - kmalloc_index(new_sz); ++ return __kmalloc_index(sz, false) - __kmalloc_index(new_sz, false); +#else + return -1; /* SLOB is untested */ +#endif @@ -24941,9 +26093,11 @@ diff -urN /usr/share/empty/fs/aufs/module.h linux/fs/aufs/module.h + kmem_cache_create(#type, sizeof(struct type), \ + __alignof__(struct type), AuCacheFlags, ctor) + -+#define AuCacheFuncs(name, index) \ ++#define AuCacheFuncAlloc(name, index) \ + static inline struct au_##name *au_cache_alloc_##name(void) \ -+ { return kmem_cache_alloc(au_cache[AuCache_##index], GFP_NOFS); } \ ++ { return kmem_cache_alloc(au_cache[AuCache_##index], GFP_NOFS); } ++ ++#define AuCacheFuncs(name, index) \ + static inline void au_cache_free_##name##_norcu(struct au_##name *p) \ + { kmem_cache_free(au_cache[AuCache_##index], p); } \ + \ @@ -24960,23 +26114,35 @@ diff -urN /usr/share/empty/fs/aufs/module.h linux/fs/aufs/module.h + au_cache_free_##name##_rcu(p); } + +AuCacheFuncs(dinfo, DINFO); ++AuCacheFuncAlloc(dinfo, DINFO); ++ +AuCacheFuncs(icntnr, ICNTNR); ++static inline struct au_icntnr *au_cache_alloc_icntnr(struct super_block *sb) ++{ return alloc_inode_sb(sb, au_cache[AuCache_ICNTNR], GFP_NOFS); } ++ +AuCacheFuncs(finfo, FINFO); ++AuCacheFuncAlloc(finfo, FINFO); ++ +AuCacheFuncs(vdir, VDIR); ++AuCacheFuncAlloc(vdir, VDIR); ++ +AuCacheFuncs(vdir_dehstr, DEHSTR); ++AuCacheFuncAlloc(vdir_dehstr, DEHSTR); ++ +#ifdef CONFIG_AUFS_HNOTIFY +AuCacheFuncs(hnotify, HNOTIFY); ++AuCacheFuncAlloc(hnotify, HNOTIFY); +#endif + +#endif /* __KERNEL__ */ +#endif /* __AUFS_MODULE_H__ */ diff -urN /usr/share/empty/fs/aufs/mvdown.c linux/fs/aufs/mvdown.c --- /usr/share/empty/fs/aufs/mvdown.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/mvdown.c 2020-01-27 10:57:18.175538316 +0100 ++++ linux/fs/aufs/mvdown.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,706 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2011-2020 Junjiro R. Okajima ++ * Copyright (C) 2011-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -25682,11 +26848,11 @@ diff -urN /usr/share/empty/fs/aufs/mvdown.c linux/fs/aufs/mvdown.c +} diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c --- /usr/share/empty/fs/aufs/opts.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/opts.c 2020-01-27 10:57:18.175538316 +0100 -@@ -0,0 +1,1880 @@ ++++ linux/fs/aufs/opts.c 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,1032 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -25706,172 +26872,12 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + * mount options/flags + */ + -+#include +#include /* a distribution requires */ +#include +#include "aufs.h" + +/* ---------------------------------------------------------------------- */ + -+enum { -+ Opt_br, -+ Opt_add, Opt_del, Opt_mod, Opt_append, Opt_prepend, -+ Opt_idel, Opt_imod, -+ Opt_dirwh, Opt_rdcache, Opt_rdblk, Opt_rdhash, -+ Opt_rdblk_def, Opt_rdhash_def, -+ Opt_xino, Opt_noxino, -+ Opt_trunc_xino, Opt_trunc_xino_v, Opt_notrunc_xino, -+ Opt_trunc_xino_path, Opt_itrunc_xino, -+ Opt_trunc_xib, Opt_notrunc_xib, -+ Opt_shwh, Opt_noshwh, -+ Opt_plink, Opt_noplink, Opt_list_plink, -+ Opt_udba, -+ Opt_dio, Opt_nodio, -+ Opt_diropq_a, Opt_diropq_w, -+ Opt_warn_perm, Opt_nowarn_perm, -+ Opt_wbr_copyup, Opt_wbr_create, -+ Opt_fhsm_sec, -+ Opt_verbose, Opt_noverbose, -+ Opt_sum, Opt_nosum, Opt_wsum, -+ Opt_dirperm1, Opt_nodirperm1, -+ Opt_dirren, Opt_nodirren, -+ Opt_acl, Opt_noacl, -+ Opt_tail, Opt_ignore, Opt_ignore_silent, Opt_err -+}; -+ -+static match_table_t options = { -+ {Opt_br, "br=%s"}, -+ {Opt_br, "br:%s"}, -+ -+ {Opt_add, "add=%d:%s"}, -+ {Opt_add, "add:%d:%s"}, -+ {Opt_add, "ins=%d:%s"}, -+ {Opt_add, "ins:%d:%s"}, -+ {Opt_append, "append=%s"}, -+ {Opt_append, "append:%s"}, -+ {Opt_prepend, "prepend=%s"}, -+ {Opt_prepend, "prepend:%s"}, -+ -+ {Opt_del, "del=%s"}, -+ {Opt_del, "del:%s"}, -+ /* {Opt_idel, "idel:%d"}, */ -+ {Opt_mod, "mod=%s"}, -+ {Opt_mod, "mod:%s"}, -+ /* {Opt_imod, "imod:%d:%s"}, */ -+ -+ {Opt_dirwh, "dirwh=%d"}, -+ -+ {Opt_xino, "xino=%s"}, -+ {Opt_noxino, "noxino"}, -+ {Opt_trunc_xino, "trunc_xino"}, -+ {Opt_trunc_xino_v, "trunc_xino_v=%d:%d"}, -+ {Opt_notrunc_xino, "notrunc_xino"}, -+ {Opt_trunc_xino_path, "trunc_xino=%s"}, -+ {Opt_itrunc_xino, "itrunc_xino=%d"}, -+ /* {Opt_zxino, "zxino=%s"}, */ -+ {Opt_trunc_xib, "trunc_xib"}, -+ {Opt_notrunc_xib, "notrunc_xib"}, -+ -+#ifdef CONFIG_PROC_FS -+ {Opt_plink, "plink"}, -+#else -+ {Opt_ignore_silent, "plink"}, -+#endif -+ -+ {Opt_noplink, "noplink"}, -+ -+#ifdef CONFIG_AUFS_DEBUG -+ {Opt_list_plink, "list_plink"}, -+#endif -+ -+ {Opt_udba, "udba=%s"}, -+ -+ {Opt_dio, "dio"}, -+ {Opt_nodio, "nodio"}, -+ -+#ifdef CONFIG_AUFS_DIRREN -+ {Opt_dirren, "dirren"}, -+ {Opt_nodirren, "nodirren"}, -+#else -+ {Opt_ignore, "dirren"}, -+ {Opt_ignore_silent, "nodirren"}, -+#endif -+ -+#ifdef CONFIG_AUFS_FHSM -+ {Opt_fhsm_sec, "fhsm_sec=%d"}, -+#else -+ {Opt_ignore, "fhsm_sec=%d"}, -+#endif -+ -+ {Opt_diropq_a, "diropq=always"}, -+ {Opt_diropq_a, "diropq=a"}, -+ {Opt_diropq_w, "diropq=whiteouted"}, -+ {Opt_diropq_w, "diropq=w"}, -+ -+ {Opt_warn_perm, "warn_perm"}, -+ {Opt_nowarn_perm, "nowarn_perm"}, -+ -+ /* keep them temporary */ -+ {Opt_ignore_silent, "nodlgt"}, -+ {Opt_ignore, "clean_plink"}, -+ -+#ifdef CONFIG_AUFS_SHWH -+ {Opt_shwh, "shwh"}, -+#endif -+ {Opt_noshwh, "noshwh"}, -+ -+ {Opt_dirperm1, "dirperm1"}, -+ {Opt_nodirperm1, "nodirperm1"}, -+ -+ {Opt_verbose, "verbose"}, -+ {Opt_verbose, "v"}, -+ {Opt_noverbose, "noverbose"}, -+ {Opt_noverbose, "quiet"}, -+ {Opt_noverbose, "q"}, -+ {Opt_noverbose, "silent"}, -+ -+ {Opt_sum, "sum"}, -+ {Opt_nosum, "nosum"}, -+ {Opt_wsum, "wsum"}, -+ -+ {Opt_rdcache, "rdcache=%d"}, -+ {Opt_rdblk, "rdblk=%d"}, -+ {Opt_rdblk_def, "rdblk=def"}, -+ {Opt_rdhash, "rdhash=%d"}, -+ {Opt_rdhash_def, "rdhash=def"}, -+ -+ {Opt_wbr_create, "create=%s"}, -+ {Opt_wbr_create, "create_policy=%s"}, -+ {Opt_wbr_copyup, "cpup=%s"}, -+ {Opt_wbr_copyup, "copyup=%s"}, -+ {Opt_wbr_copyup, "copyup_policy=%s"}, -+ -+ /* generic VFS flag */ -+#ifdef CONFIG_FS_POSIX_ACL -+ {Opt_acl, "acl"}, -+ {Opt_noacl, "noacl"}, -+#else -+ {Opt_ignore, "acl"}, -+ {Opt_ignore_silent, "noacl"}, -+#endif -+ -+ /* internal use for the scripts */ -+ {Opt_ignore_silent, "si=%s"}, -+ -+ {Opt_br, "dirs=%s"}, -+ {Opt_ignore, "debug=%d"}, -+ {Opt_ignore, "delete=whiteout"}, -+ {Opt_ignore, "delete=all"}, -+ {Opt_ignore, "imap=%s"}, -+ -+ /* temporary workaround, due to old mount(8)? */ -+ {Opt_ignore_silent, "relatime"}, -+ -+ {Opt_err, NULL} -+}; -+ -+/* ---------------------------------------------------------------------- */ -+ +static const char *au_parser_pattern(int val, match_table_t tbl) +{ + struct match_token *p; @@ -26003,7 +27009,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + return q - str->a; +} + -+static int noinline_for_stack br_perm_val(char *perm) ++int au_br_perm_val(char *perm) +{ + int val, bad, sz; + char *p; @@ -26096,7 +27102,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + {-1, NULL} +}; + -+static int noinline_for_stack udba_val(char *str) ++int au_udba_val(char *str) +{ + substring_t args[MAX_OPT_ARGS]; + @@ -26167,8 +27173,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + return err; +} + -+static int noinline_for_stack -+au_wbr_create_val(char *str, struct au_opt_wbr_create *create) ++int au_wbr_create_val(char *str, struct au_opt_wbr_create *create) +{ + int err, e; + substring_t args[MAX_OPT_ARGS]; @@ -26193,7 +27198,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + err = e; + break; + } -+ /*FALLTHROUGH*/ ++ fallthrough; + case AuWbrCreate_MFS: + case AuWbrCreate_PMFS: + create->mfs_second = AUFS_MFS_DEF_SEC; @@ -26224,7 +27229,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + {-1, NULL} +}; + -+static int noinline_for_stack au_wbr_copyup_val(char *str) ++int au_wbr_copyup_val(char *str) +{ + substring_t args[MAX_OPT_ARGS]; + @@ -26238,235 +27243,8 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + +/* ---------------------------------------------------------------------- */ + -+static const int lkup_dirflags = LOOKUP_FOLLOW | LOOKUP_DIRECTORY; -+ -+static void dump_opts(struct au_opts *opts) -+{ -+#ifdef CONFIG_AUFS_DEBUG -+ /* reduce stack space */ -+ union { -+ struct au_opt_add *add; -+ struct au_opt_del *del; -+ struct au_opt_mod *mod; -+ struct au_opt_xino *xino; -+ struct au_opt_xino_itrunc *xino_itrunc; -+ struct au_opt_wbr_create *create; -+ } u; -+ struct au_opt *opt; -+ -+ opt = opts->opt; -+ while (opt->type != Opt_tail) { -+ switch (opt->type) { -+ case Opt_add: -+ u.add = &opt->add; -+ AuDbg("add {b%d, %s, 0x%x, %p}\n", -+ u.add->bindex, u.add->pathname, u.add->perm, -+ u.add->path.dentry); -+ break; -+ case Opt_del: -+ case Opt_idel: -+ u.del = &opt->del; -+ AuDbg("del {%s, %p}\n", -+ u.del->pathname, u.del->h_path.dentry); -+ break; -+ case Opt_mod: -+ case Opt_imod: -+ u.mod = &opt->mod; -+ AuDbg("mod {%s, 0x%x, %p}\n", -+ u.mod->path, u.mod->perm, u.mod->h_root); -+ break; -+ case Opt_append: -+ u.add = &opt->add; -+ AuDbg("append {b%d, %s, 0x%x, %p}\n", -+ u.add->bindex, u.add->pathname, u.add->perm, -+ u.add->path.dentry); -+ break; -+ case Opt_prepend: -+ u.add = &opt->add; -+ AuDbg("prepend {b%d, %s, 0x%x, %p}\n", -+ u.add->bindex, u.add->pathname, u.add->perm, -+ u.add->path.dentry); -+ break; -+ case Opt_dirwh: -+ AuDbg("dirwh %d\n", opt->dirwh); -+ break; -+ case Opt_rdcache: -+ AuDbg("rdcache %d\n", opt->rdcache); -+ break; -+ case Opt_rdblk: -+ AuDbg("rdblk %u\n", opt->rdblk); -+ break; -+ case Opt_rdblk_def: -+ AuDbg("rdblk_def\n"); -+ break; -+ case Opt_rdhash: -+ AuDbg("rdhash %u\n", opt->rdhash); -+ break; -+ case Opt_rdhash_def: -+ AuDbg("rdhash_def\n"); -+ break; -+ case Opt_xino: -+ u.xino = &opt->xino; -+ AuDbg("xino {%s %pD}\n", u.xino->path, u.xino->file); -+ break; -+ case Opt_trunc_xino: -+ AuLabel(trunc_xino); -+ break; -+ case Opt_notrunc_xino: -+ AuLabel(notrunc_xino); -+ break; -+ case Opt_trunc_xino_path: -+ case Opt_itrunc_xino: -+ u.xino_itrunc = &opt->xino_itrunc; -+ AuDbg("trunc_xino %d\n", u.xino_itrunc->bindex); -+ break; -+ case Opt_noxino: -+ AuLabel(noxino); -+ break; -+ case Opt_trunc_xib: -+ AuLabel(trunc_xib); -+ break; -+ case Opt_notrunc_xib: -+ AuLabel(notrunc_xib); -+ break; -+ case Opt_shwh: -+ AuLabel(shwh); -+ break; -+ case Opt_noshwh: -+ AuLabel(noshwh); -+ break; -+ case Opt_dirperm1: -+ AuLabel(dirperm1); -+ break; -+ case Opt_nodirperm1: -+ AuLabel(nodirperm1); -+ break; -+ case Opt_plink: -+ AuLabel(plink); -+ break; -+ case Opt_noplink: -+ AuLabel(noplink); -+ break; -+ case Opt_list_plink: -+ AuLabel(list_plink); -+ break; -+ case Opt_udba: -+ AuDbg("udba %d, %s\n", -+ opt->udba, au_optstr_udba(opt->udba)); -+ break; -+ case Opt_dio: -+ AuLabel(dio); -+ break; -+ case Opt_nodio: -+ AuLabel(nodio); -+ break; -+ case Opt_diropq_a: -+ AuLabel(diropq_a); -+ break; -+ case Opt_diropq_w: -+ AuLabel(diropq_w); -+ break; -+ case Opt_warn_perm: -+ AuLabel(warn_perm); -+ break; -+ case Opt_nowarn_perm: -+ AuLabel(nowarn_perm); -+ break; -+ case Opt_verbose: -+ AuLabel(verbose); -+ break; -+ case Opt_noverbose: -+ AuLabel(noverbose); -+ break; -+ case Opt_sum: -+ AuLabel(sum); -+ break; -+ case Opt_nosum: -+ AuLabel(nosum); -+ break; -+ case Opt_wsum: -+ AuLabel(wsum); -+ break; -+ case Opt_wbr_create: -+ u.create = &opt->wbr_create; -+ AuDbg("create %d, %s\n", u.create->wbr_create, -+ au_optstr_wbr_create(u.create->wbr_create)); -+ switch (u.create->wbr_create) { -+ case AuWbrCreate_MFSV: -+ case AuWbrCreate_PMFSV: -+ AuDbg("%d sec\n", u.create->mfs_second); -+ break; -+ case AuWbrCreate_MFSRR: -+ case AuWbrCreate_TDMFS: -+ AuDbg("%llu watermark\n", -+ u.create->mfsrr_watermark); -+ break; -+ case AuWbrCreate_MFSRRV: -+ case AuWbrCreate_TDMFSV: -+ case AuWbrCreate_PMFSRRV: -+ AuDbg("%llu watermark, %d sec\n", -+ u.create->mfsrr_watermark, -+ u.create->mfs_second); -+ break; -+ } -+ break; -+ case Opt_wbr_copyup: -+ AuDbg("copyup %d, %s\n", opt->wbr_copyup, -+ au_optstr_wbr_copyup(opt->wbr_copyup)); -+ break; -+ case Opt_fhsm_sec: -+ AuDbg("fhsm_sec %u\n", opt->fhsm_second); -+ break; -+ case Opt_dirren: -+ AuLabel(dirren); -+ break; -+ case Opt_nodirren: -+ AuLabel(nodirren); -+ break; -+ case Opt_acl: -+ AuLabel(acl); -+ break; -+ case Opt_noacl: -+ AuLabel(noacl); -+ break; -+ default: -+ BUG(); -+ } -+ opt++; -+ } -+#endif -+} -+ -+void au_opts_free(struct au_opts *opts) -+{ -+ struct au_opt *opt; -+ -+ opt = opts->opt; -+ while (opt->type != Opt_tail) { -+ switch (opt->type) { -+ case Opt_add: -+ case Opt_append: -+ case Opt_prepend: -+ path_put(&opt->add.path); -+ break; -+ case Opt_del: -+ case Opt_idel: -+ path_put(&opt->del.h_path); -+ break; -+ case Opt_mod: -+ case Opt_imod: -+ dput(opt->mod.h_root); -+ break; -+ case Opt_xino: -+ fput(opt->xino.file); -+ break; -+ } -+ opt++; -+ } -+} -+ -+static int opt_add(struct au_opt *opt, char *opt_str, unsigned long sb_flags, -+ aufs_bindex_t bindex) ++int au_opt_add(struct au_opt *opt, char *opt_str, unsigned long sb_flags, ++ aufs_bindex_t bindex) +{ + int err; + struct au_opt_add *add = &opt->add; @@ -26479,10 +27257,10 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + if (p) { + *p++ = 0; + if (*p) -+ add->perm = br_perm_val(p); ++ add->perm = au_br_perm_val(p); + } + -+ err = vfsub_kern_path(add->pathname, lkup_dirflags, &add->path); ++ err = vfsub_kern_path(add->pathname, AuOpt_LkupDirFlags, &add->path); + if (!err) { + if (!p) { + add->perm = AuBrPerm_RO; @@ -26501,460 +27279,6 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + return err; +} + -+static int au_opts_parse_del(struct au_opt_del *del, substring_t args[]) -+{ -+ int err; -+ -+ del->pathname = args[0].from; -+ AuDbg("del path %s\n", del->pathname); -+ -+ err = vfsub_kern_path(del->pathname, lkup_dirflags, &del->h_path); -+ if (unlikely(err)) -+ pr_err("lookup failed %s (%d)\n", del->pathname, err); -+ -+ return err; -+} -+ -+#if 0 /* reserved for future use */ -+static int au_opts_parse_idel(struct super_block *sb, aufs_bindex_t bindex, -+ struct au_opt_del *del, substring_t args[]) -+{ -+ int err; -+ struct dentry *root; -+ -+ err = -EINVAL; -+ root = sb->s_root; -+ aufs_read_lock(root, AuLock_FLUSH); -+ if (bindex < 0 || au_sbbot(sb) < bindex) { -+ pr_err("out of bounds, %d\n", bindex); -+ goto out; -+ } -+ -+ err = 0; -+ del->h_path.dentry = dget(au_h_dptr(root, bindex)); -+ del->h_path.mnt = mntget(au_sbr_mnt(sb, bindex)); -+ -+out: -+ aufs_read_unlock(root, !AuLock_IR); -+ return err; -+} -+#endif -+ -+static int noinline_for_stack -+au_opts_parse_mod(struct au_opt_mod *mod, substring_t args[]) -+{ -+ int err; -+ struct path path; -+ char *p; -+ -+ err = -EINVAL; -+ mod->path = args[0].from; -+ p = strchr(mod->path, '='); -+ if (unlikely(!p)) { -+ pr_err("no permission %s\n", args[0].from); -+ goto out; -+ } -+ -+ *p++ = 0; -+ err = vfsub_kern_path(mod->path, lkup_dirflags, &path); -+ if (unlikely(err)) { -+ pr_err("lookup failed %s (%d)\n", mod->path, err); -+ goto out; -+ } -+ -+ mod->perm = br_perm_val(p); -+ AuDbg("mod path %s, perm 0x%x, %s\n", mod->path, mod->perm, p); -+ mod->h_root = dget(path.dentry); -+ path_put(&path); -+ -+out: -+ return err; -+} -+ -+#if 0 /* reserved for future use */ -+static int au_opts_parse_imod(struct super_block *sb, aufs_bindex_t bindex, -+ struct au_opt_mod *mod, substring_t args[]) -+{ -+ int err; -+ struct dentry *root; -+ -+ err = -EINVAL; -+ root = sb->s_root; -+ aufs_read_lock(root, AuLock_FLUSH); -+ if (bindex < 0 || au_sbbot(sb) < bindex) { -+ pr_err("out of bounds, %d\n", bindex); -+ goto out; -+ } -+ -+ err = 0; -+ mod->perm = br_perm_val(args[1].from); -+ AuDbg("mod path %s, perm 0x%x, %s\n", -+ mod->path, mod->perm, args[1].from); -+ mod->h_root = dget(au_h_dptr(root, bindex)); -+ -+out: -+ aufs_read_unlock(root, !AuLock_IR); -+ return err; -+} -+#endif -+ -+static int au_opts_parse_xino(struct super_block *sb, struct au_opt_xino *xino, -+ substring_t args[]) -+{ -+ int err; -+ struct file *file; -+ -+ file = au_xino_create(sb, args[0].from, /*silent*/0, /*wbrtop*/0); -+ err = PTR_ERR(file); -+ if (IS_ERR(file)) -+ goto out; -+ -+ err = -EINVAL; -+ if (unlikely(file->f_path.dentry->d_sb == sb)) { -+ fput(file); -+ pr_err("%s must be outside\n", args[0].from); -+ goto out; -+ } -+ -+ err = 0; -+ xino->file = file; -+ xino->path = args[0].from; -+ -+out: -+ return err; -+} -+ -+static int noinline_for_stack -+au_opts_parse_xino_itrunc_path(struct super_block *sb, -+ struct au_opt_xino_itrunc *xino_itrunc, -+ substring_t args[]) -+{ -+ int err; -+ aufs_bindex_t bbot, bindex; -+ struct path path; -+ struct dentry *root; -+ -+ err = vfsub_kern_path(args[0].from, lkup_dirflags, &path); -+ if (unlikely(err)) { -+ pr_err("lookup failed %s (%d)\n", args[0].from, err); -+ goto out; -+ } -+ -+ xino_itrunc->bindex = -1; -+ root = sb->s_root; -+ aufs_read_lock(root, AuLock_FLUSH); -+ bbot = au_sbbot(sb); -+ for (bindex = 0; bindex <= bbot; bindex++) { -+ if (au_h_dptr(root, bindex) == path.dentry) { -+ xino_itrunc->bindex = bindex; -+ break; -+ } -+ } -+ aufs_read_unlock(root, !AuLock_IR); -+ path_put(&path); -+ -+ if (unlikely(xino_itrunc->bindex < 0)) { -+ pr_err("no such branch %s\n", args[0].from); -+ err = -EINVAL; -+ } -+ -+out: -+ return err; -+} -+ -+/* called without aufs lock */ -+int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts) -+{ -+ int err, n, token; -+ aufs_bindex_t bindex; -+ unsigned char skipped; -+ struct dentry *root; -+ struct au_opt *opt, *opt_tail; -+ char *opt_str; -+ /* reduce the stack space */ -+ union { -+ struct au_opt_xino_itrunc *xino_itrunc; -+ struct au_opt_wbr_create *create; -+ } u; -+ struct { -+ substring_t args[MAX_OPT_ARGS]; -+ } *a; -+ -+ err = -ENOMEM; -+ a = kmalloc(sizeof(*a), GFP_NOFS); -+ if (unlikely(!a)) -+ goto out; -+ -+ root = sb->s_root; -+ err = 0; -+ bindex = 0; -+ opt = opts->opt; -+ opt_tail = opt + opts->max_opt - 1; -+ opt->type = Opt_tail; -+ while (!err && (opt_str = strsep(&str, ",")) && *opt_str) { -+ err = -EINVAL; -+ skipped = 0; -+ token = match_token(opt_str, options, a->args); -+ switch (token) { -+ case Opt_br: -+ err = 0; -+ while (!err && (opt_str = strsep(&a->args[0].from, ":")) -+ && *opt_str) { -+ err = opt_add(opt, opt_str, opts->sb_flags, -+ bindex++); -+ if (unlikely(!err && ++opt > opt_tail)) { -+ err = -E2BIG; -+ break; -+ } -+ opt->type = Opt_tail; -+ skipped = 1; -+ } -+ break; -+ case Opt_add: -+ if (unlikely(match_int(&a->args[0], &n))) { -+ pr_err("bad integer in %s\n", opt_str); -+ break; -+ } -+ bindex = n; -+ err = opt_add(opt, a->args[1].from, opts->sb_flags, -+ bindex); -+ if (!err) -+ opt->type = token; -+ break; -+ case Opt_append: -+ err = opt_add(opt, a->args[0].from, opts->sb_flags, -+ /*dummy bindex*/1); -+ if (!err) -+ opt->type = token; -+ break; -+ case Opt_prepend: -+ err = opt_add(opt, a->args[0].from, opts->sb_flags, -+ /*bindex*/0); -+ if (!err) -+ opt->type = token; -+ break; -+ case Opt_del: -+ err = au_opts_parse_del(&opt->del, a->args); -+ if (!err) -+ opt->type = token; -+ break; -+#if 0 /* reserved for future use */ -+ case Opt_idel: -+ del->pathname = "(indexed)"; -+ if (unlikely(match_int(&args[0], &n))) { -+ pr_err("bad integer in %s\n", opt_str); -+ break; -+ } -+ err = au_opts_parse_idel(sb, n, &opt->del, a->args); -+ if (!err) -+ opt->type = token; -+ break; -+#endif -+ case Opt_mod: -+ err = au_opts_parse_mod(&opt->mod, a->args); -+ if (!err) -+ opt->type = token; -+ break; -+#ifdef IMOD /* reserved for future use */ -+ case Opt_imod: -+ u.mod->path = "(indexed)"; -+ if (unlikely(match_int(&a->args[0], &n))) { -+ pr_err("bad integer in %s\n", opt_str); -+ break; -+ } -+ err = au_opts_parse_imod(sb, n, &opt->mod, a->args); -+ if (!err) -+ opt->type = token; -+ break; -+#endif -+ case Opt_xino: -+ err = au_opts_parse_xino(sb, &opt->xino, a->args); -+ if (!err) -+ opt->type = token; -+ break; -+ -+ case Opt_trunc_xino_path: -+ err = au_opts_parse_xino_itrunc_path -+ (sb, &opt->xino_itrunc, a->args); -+ if (!err) -+ opt->type = token; -+ break; -+ -+ case Opt_itrunc_xino: -+ u.xino_itrunc = &opt->xino_itrunc; -+ if (unlikely(match_int(&a->args[0], &n))) { -+ pr_err("bad integer in %s\n", opt_str); -+ break; -+ } -+ u.xino_itrunc->bindex = n; -+ aufs_read_lock(root, AuLock_FLUSH); -+ if (n < 0 || au_sbbot(sb) < n) { -+ pr_err("out of bounds, %d\n", n); -+ aufs_read_unlock(root, !AuLock_IR); -+ break; -+ } -+ aufs_read_unlock(root, !AuLock_IR); -+ err = 0; -+ opt->type = token; -+ break; -+ -+ case Opt_dirwh: -+ if (unlikely(match_int(&a->args[0], &opt->dirwh))) -+ break; -+ err = 0; -+ opt->type = token; -+ break; -+ -+ case Opt_rdcache: -+ if (unlikely(match_int(&a->args[0], &n))) { -+ pr_err("bad integer in %s\n", opt_str); -+ break; -+ } -+ if (unlikely(n > AUFS_RDCACHE_MAX)) { -+ pr_err("rdcache must be smaller than %d\n", -+ AUFS_RDCACHE_MAX); -+ break; -+ } -+ opt->rdcache = n; -+ err = 0; -+ opt->type = token; -+ break; -+ case Opt_rdblk: -+ if (unlikely(match_int(&a->args[0], &n) -+ || n < 0 -+ || n > KMALLOC_MAX_SIZE)) { -+ pr_err("bad integer in %s\n", opt_str); -+ break; -+ } -+ if (unlikely(n && n < NAME_MAX)) { -+ pr_err("rdblk must be larger than %d\n", -+ NAME_MAX); -+ break; -+ } -+ opt->rdblk = n; -+ err = 0; -+ opt->type = token; -+ break; -+ case Opt_rdhash: -+ if (unlikely(match_int(&a->args[0], &n) -+ || n < 0 -+ || n * sizeof(struct hlist_head) -+ > KMALLOC_MAX_SIZE)) { -+ pr_err("bad integer in %s\n", opt_str); -+ break; -+ } -+ opt->rdhash = n; -+ err = 0; -+ opt->type = token; -+ break; -+ -+ case Opt_trunc_xino: -+ case Opt_notrunc_xino: -+ case Opt_noxino: -+ case Opt_trunc_xib: -+ case Opt_notrunc_xib: -+ case Opt_shwh: -+ case Opt_noshwh: -+ case Opt_dirperm1: -+ case Opt_nodirperm1: -+ case Opt_plink: -+ case Opt_noplink: -+ case Opt_list_plink: -+ case Opt_dio: -+ case Opt_nodio: -+ case Opt_diropq_a: -+ case Opt_diropq_w: -+ case Opt_warn_perm: -+ case Opt_nowarn_perm: -+ case Opt_verbose: -+ case Opt_noverbose: -+ case Opt_sum: -+ case Opt_nosum: -+ case Opt_wsum: -+ case Opt_rdblk_def: -+ case Opt_rdhash_def: -+ case Opt_dirren: -+ case Opt_nodirren: -+ case Opt_acl: -+ case Opt_noacl: -+ err = 0; -+ opt->type = token; -+ break; -+ -+ case Opt_udba: -+ opt->udba = udba_val(a->args[0].from); -+ if (opt->udba >= 0) { -+ err = 0; -+ opt->type = token; -+ } else -+ pr_err("wrong value, %s\n", opt_str); -+ break; -+ -+ case Opt_wbr_create: -+ u.create = &opt->wbr_create; -+ u.create->wbr_create -+ = au_wbr_create_val(a->args[0].from, u.create); -+ if (u.create->wbr_create >= 0) { -+ err = 0; -+ opt->type = token; -+ } else -+ pr_err("wrong value, %s\n", opt_str); -+ break; -+ case Opt_wbr_copyup: -+ opt->wbr_copyup = au_wbr_copyup_val(a->args[0].from); -+ if (opt->wbr_copyup >= 0) { -+ err = 0; -+ opt->type = token; -+ } else -+ pr_err("wrong value, %s\n", opt_str); -+ break; -+ -+ case Opt_fhsm_sec: -+ if (unlikely(match_int(&a->args[0], &n) -+ || n < 0)) { -+ pr_err("bad integer in %s\n", opt_str); -+ break; -+ } -+ if (sysaufs_brs) { -+ opt->fhsm_second = n; -+ opt->type = token; -+ } else -+ pr_warn("ignored %s\n", opt_str); -+ err = 0; -+ break; -+ -+ case Opt_ignore: -+ pr_warn("ignored %s\n", opt_str); -+ /*FALLTHROUGH*/ -+ case Opt_ignore_silent: -+ skipped = 1; -+ err = 0; -+ break; -+ case Opt_err: -+ pr_err("unknown option %s\n", opt_str); -+ break; -+ } -+ -+ if (!err && !skipped) { -+ if (unlikely(++opt > opt_tail)) { -+ err = -E2BIG; -+ opt--; -+ opt->type = Opt_tail; -+ break; -+ } -+ opt->type = Opt_tail; -+ } -+ } -+ -+ au_kfree_rcu(a); -+ dump_opts(opts); -+ if (unlikely(err)) -+ au_opts_free(opts); -+ -+out: -+ return err; -+} -+ +static int au_opt_wbr_create(struct super_block *sb, + struct au_opt_wbr_create *create) +{ @@ -26981,7 +27305,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + case AuWbrCreate_PMFSRR: + case AuWbrCreate_PMFSRRV: + sbinfo->si_wbr_mfs.mfsrr_watermark = create->mfsrr_watermark; -+ /*FALLTHROUGH*/ ++ fallthrough; + case AuWbrCreate_MFS: + case AuWbrCreate_MFSV: + case AuWbrCreate_PMFS: @@ -27020,12 +27344,13 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + break; + + case Opt_plink: -+ au_opt_set(sbinfo->si_mntflags, PLINK); -+ break; -+ case Opt_noplink: -+ if (au_opt_test(sbinfo->si_mntflags, PLINK)) -+ au_plink_put(sb, /*verbose*/1); -+ au_opt_clr(sbinfo->si_mntflags, PLINK); ++ if (opt->tf) ++ au_opt_set(sbinfo->si_mntflags, PLINK); ++ else { ++ if (au_opt_test(sbinfo->si_mntflags, PLINK)) ++ au_plink_put(sb, /*verbose*/1); ++ au_opt_clr(sbinfo->si_mntflags, PLINK); ++ } + break; + case Opt_list_plink: + if (au_opt_test(sbinfo->si_mntflags, PLINK)) @@ -27033,12 +27358,13 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + break; + + case Opt_dio: -+ au_opt_set(sbinfo->si_mntflags, DIO); -+ au_fset_opts(opts->flags, REFRESH_DYAOP); -+ break; -+ case Opt_nodio: -+ au_opt_clr(sbinfo->si_mntflags, DIO); -+ au_fset_opts(opts->flags, REFRESH_DYAOP); ++ if (opt->tf) { ++ au_opt_set(sbinfo->si_mntflags, DIO); ++ au_fset_opts(opts->flags, REFRESH_DYAOP); ++ } else { ++ au_opt_clr(sbinfo->si_mntflags, DIO); ++ au_fset_opts(opts->flags, REFRESH_DYAOP); ++ } + break; + + case Opt_fhsm_sec: @@ -27053,30 +27379,31 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + break; + + case Opt_warn_perm: -+ au_opt_set(sbinfo->si_mntflags, WARN_PERM); -+ break; -+ case Opt_nowarn_perm: -+ au_opt_clr(sbinfo->si_mntflags, WARN_PERM); ++ if (opt->tf) ++ au_opt_set(sbinfo->si_mntflags, WARN_PERM); ++ else ++ au_opt_clr(sbinfo->si_mntflags, WARN_PERM); + break; + + case Opt_verbose: -+ au_opt_set(sbinfo->si_mntflags, VERBOSE); -+ break; -+ case Opt_noverbose: -+ au_opt_clr(sbinfo->si_mntflags, VERBOSE); ++ if (opt->tf) ++ au_opt_set(sbinfo->si_mntflags, VERBOSE); ++ else ++ au_opt_clr(sbinfo->si_mntflags, VERBOSE); + break; + + case Opt_sum: -+ au_opt_set(sbinfo->si_mntflags, SUM); ++ if (opt->tf) ++ au_opt_set(sbinfo->si_mntflags, SUM); ++ else { ++ au_opt_clr(sbinfo->si_mntflags, SUM); ++ au_opt_clr(sbinfo->si_mntflags, SUM_W); ++ } + break; + case Opt_wsum: + au_opt_clr(sbinfo->si_mntflags, SUM); + au_opt_set(sbinfo->si_mntflags, SUM_W); + break; -+ case Opt_nosum: -+ au_opt_clr(sbinfo->si_mntflags, SUM); -+ au_opt_clr(sbinfo->si_mntflags, SUM_W); -+ break; + + case Opt_wbr_create: + err = au_opt_wbr_create(sb, &opt->wbr_create); @@ -27097,35 +27424,29 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + case Opt_rdblk: + sbinfo->si_rdblk = opt->rdblk; + break; -+ case Opt_rdblk_def: -+ sbinfo->si_rdblk = AUFS_RDBLK_DEF; -+ break; + case Opt_rdhash: + sbinfo->si_rdhash = opt->rdhash; + break; -+ case Opt_rdhash_def: -+ sbinfo->si_rdhash = AUFS_RDHASH_DEF; -+ break; + + case Opt_shwh: -+ au_opt_set(sbinfo->si_mntflags, SHWH); -+ break; -+ case Opt_noshwh: -+ au_opt_clr(sbinfo->si_mntflags, SHWH); ++ if (opt->tf) ++ au_opt_set(sbinfo->si_mntflags, SHWH); ++ else ++ au_opt_clr(sbinfo->si_mntflags, SHWH); + break; + + case Opt_dirperm1: -+ au_opt_set(sbinfo->si_mntflags, DIRPERM1); -+ break; -+ case Opt_nodirperm1: -+ au_opt_clr(sbinfo->si_mntflags, DIRPERM1); ++ if (opt->tf) ++ au_opt_set(sbinfo->si_mntflags, DIRPERM1); ++ else ++ au_opt_clr(sbinfo->si_mntflags, DIRPERM1); + break; + + case Opt_trunc_xino: -+ au_opt_set(sbinfo->si_mntflags, TRUNC_XINO); -+ break; -+ case Opt_notrunc_xino: -+ au_opt_clr(sbinfo->si_mntflags, TRUNC_XINO); ++ if (opt->tf) ++ au_opt_set(sbinfo->si_mntflags, TRUNC_XINO); ++ else ++ au_opt_clr(sbinfo->si_mntflags, TRUNC_XINO); + break; + + case Opt_trunc_xino_path: @@ -27137,39 +27458,39 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + break; + + case Opt_trunc_xib: -+ au_fset_opts(opts->flags, TRUNC_XIB); -+ break; -+ case Opt_notrunc_xib: -+ au_fclr_opts(opts->flags, TRUNC_XIB); ++ if (opt->tf) ++ au_fset_opts(opts->flags, TRUNC_XIB); ++ else ++ au_fclr_opts(opts->flags, TRUNC_XIB); + break; + + case Opt_dirren: + err = 1; -+ if (!au_opt_test(sbinfo->si_mntflags, DIRREN)) { -+ err = au_dr_opt_set(sb); -+ if (!err) -+ err = 1; -+ } -+ if (err == 1) -+ au_opt_set(sbinfo->si_mntflags, DIRREN); -+ break; -+ case Opt_nodirren: -+ err = 1; -+ if (au_opt_test(sbinfo->si_mntflags, DIRREN)) { -+ err = au_dr_opt_clr(sb, au_ftest_opts(opts->flags, -+ DR_FLUSHED)); -+ if (!err) -+ err = 1; ++ if (opt->tf) { ++ if (!au_opt_test(sbinfo->si_mntflags, DIRREN)) { ++ err = au_dr_opt_set(sb); ++ if (!err) ++ err = 1; ++ } ++ if (err == 1) ++ au_opt_set(sbinfo->si_mntflags, DIRREN); ++ } else { ++ if (au_opt_test(sbinfo->si_mntflags, DIRREN)) { ++ err = au_dr_opt_clr(sb, au_ftest_opts(opts->flags, ++ DR_FLUSHED)); ++ if (!err) ++ err = 1; ++ } ++ if (err == 1) ++ au_opt_clr(sbinfo->si_mntflags, DIRREN); + } -+ if (err == 1) -+ au_opt_clr(sbinfo->si_mntflags, DIRREN); + break; + + case Opt_acl: -+ sb->s_flags |= SB_POSIXACL; -+ break; -+ case Opt_noacl: -+ sb->s_flags &= ~SB_POSIXACL; ++ if (opt->tf) ++ sb->s_flags |= SB_POSIXACL; ++ else ++ sb->s_flags &= ~SB_POSIXACL; + break; + + default: @@ -27201,7 +27522,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + /* Always goto add, not fallthrough */ + case Opt_prepend: + opt->add.bindex = 0; -+ /* fallthrough */ ++ fallthrough; + add: /* indented label */ + case Opt_add: + err = au_br_add(sb, &opt->add, @@ -27249,12 +27570,9 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c + case Opt_xino: + err = au_xino_set(sb, &opt->xino, + !!au_ftest_opts(opts->flags, REMOUNT)); -+ if (unlikely(err)) -+ break; -+ -+ *opt_xino = &opt->xino; ++ if (!err) ++ *opt_xino = &opt->xino; + break; -+ + case Opt_noxino: + au_xino_clr(sb); + *opt_xino = (void *)-1; @@ -27566,11 +27884,11 @@ diff -urN /usr/share/empty/fs/aufs/opts.c linux/fs/aufs/opts.c +} diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h --- /usr/share/empty/fs/aufs/opts.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/opts.h 2020-01-27 10:57:18.175538316 +0100 -@@ -0,0 +1,225 @@ ++++ linux/fs/aufs/opts.h 2022-08-02 12:12:45.165641939 +0200 +@@ -0,0 +1,263 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -27595,9 +27913,34 @@ diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h + +#ifdef __KERNEL__ + ++#include ++#include +#include + -+struct file; ++enum { ++ Opt_br, ++ Opt_add, Opt_del, Opt_mod, Opt_append, Opt_prepend, ++ Opt_idel, Opt_imod, ++ Opt_dirwh, Opt_rdcache, Opt_rdblk, Opt_rdhash, ++ Opt_xino, Opt_noxino, ++ Opt_trunc_xino, Opt_trunc_xino_v, ++ Opt_trunc_xino_path, Opt_itrunc_xino, ++ Opt_trunc_xib, ++ Opt_shwh, ++ Opt_plink, Opt_list_plink, ++ Opt_udba, ++ Opt_dio, ++ Opt_diropq, Opt_diropq_a, Opt_diropq_w, ++ Opt_warn_perm, ++ Opt_wbr_copyup, Opt_wbr_create, ++ Opt_fhsm_sec, ++ Opt_verbose, Opt_noverbose, ++ Opt_sum, Opt_wsum, ++ Opt_dirperm1, ++ Opt_dirren, ++ Opt_acl, ++ Opt_tail, Opt_ignore, Opt_ignore_silent, Opt_err ++}; + +/* ---------------------------------------------------------------------- */ + @@ -27642,6 +27985,8 @@ diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h + | AuOpt_UDBA_REVAL \ + | AuOpt_UDBA_HNOTIFY) + ++#define AuOpt_LkupDirFlags (LOOKUP_FOLLOW | LOOKUP_DIRECTORY) ++ +#define au_opt_test(flags, name) (flags & AuOpt_##name) +#define au_opt_set(flags, name) do { \ + BUILD_BUG_ON(AuOpt_##name & AuOptMask_UDBA); \ @@ -27694,6 +28039,8 @@ diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h + +/* ---------------------------------------------------------------------- */ + ++struct file; ++ +struct au_opt_add { + aufs_bindex_t bindex; + char *pathname; @@ -27743,6 +28090,7 @@ diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h + struct au_opt_wbr_create wbr_create; + int wbr_copyup; + unsigned int fhsm_second; ++ bool tf; /* generic flag, true or false */ + }; +}; + @@ -27776,14 +28124,18 @@ diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h +/* ---------------------------------------------------------------------- */ + +/* opts.c */ ++int au_br_perm_val(char *perm); +void au_optstr_br_perm(au_br_perm_str_t *str, int perm); ++int au_udba_val(char *str); +const char *au_optstr_udba(int udba); -+const char *au_optstr_wbr_copyup(int wbr_copyup); ++int au_wbr_create_val(char *str, struct au_opt_wbr_create *create); +const char *au_optstr_wbr_create(int wbr_create); ++int au_wbr_copyup_val(char *str); ++const char *au_optstr_wbr_copyup(int wbr_copyup); + -+void au_opts_free(struct au_opts *opts); ++int au_opt_add(struct au_opt *opt, char *opt_str, unsigned long sb_flags, ++ aufs_bindex_t bindex); +struct super_block; -+int au_opts_parse(struct super_block *sb, char *str, struct au_opts *opts); +int au_opts_verify(struct super_block *sb, unsigned long sb_flags, + unsigned int pending); +int au_opts_mount(struct super_block *sb, struct au_opts *opts); @@ -27791,15 +28143,19 @@ diff -urN /usr/share/empty/fs/aufs/opts.h linux/fs/aufs/opts.h + +unsigned int au_opt_udba(struct super_block *sb); + ++/* fsctx.c */ ++int aufs_fsctx_init(struct fs_context *fc); ++extern const struct fs_parameter_spec aufs_fsctx_paramspec[]; ++ +#endif /* __KERNEL__ */ +#endif /* __AUFS_OPTS_H__ */ diff -urN /usr/share/empty/fs/aufs/plink.c linux/fs/aufs/plink.c --- /usr/share/empty/fs/aufs/plink.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/plink.c 2020-01-27 10:57:18.175538316 +0100 ++++ linux/fs/aufs/plink.c 2022-08-02 12:12:45.165641939 +0200 @@ -0,0 +1,516 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -28005,35 +28361,35 @@ diff -urN /usr/share/empty/fs/aufs/plink.c linux/fs/aufs/plink.c +struct au_do_plink_lkup_args { + struct dentry **errp; + struct qstr *tgtname; -+ struct dentry *h_parent; -+ struct au_branch *br; ++ struct path *h_ppath; +}; + +static struct dentry *au_do_plink_lkup(struct qstr *tgtname, -+ struct dentry *h_parent, -+ struct au_branch *br) ++ struct path *h_ppath) +{ + struct dentry *h_dentry; + struct inode *h_inode; + -+ h_inode = d_inode(h_parent); ++ h_inode = d_inode(h_ppath->dentry); + inode_lock_shared_nested(h_inode, AuLsc_I_CHILD2); -+ h_dentry = vfsub_lkup_one(tgtname, h_parent); ++ h_dentry = vfsub_lkup_one(tgtname, h_ppath); + inode_unlock_shared(h_inode); ++ + return h_dentry; +} + +static void au_call_do_plink_lkup(void *args) +{ + struct au_do_plink_lkup_args *a = args; -+ *a->errp = au_do_plink_lkup(a->tgtname, a->h_parent, a->br); ++ *a->errp = au_do_plink_lkup(a->tgtname, a->h_ppath); +} + +/* lookup the plink-ed @inode under the branch at @bindex */ +struct dentry *au_plink_lkup(struct inode *inode, aufs_bindex_t bindex) +{ -+ struct dentry *h_dentry, *h_parent; ++ struct dentry *h_dentry; + struct au_branch *br; ++ struct path h_ppath; + int wkq_err; + char a[PLINK_NAME_LEN]; + struct qstr tgtname = QSTR_INIT(a, 0); @@ -28041,40 +28397,39 @@ diff -urN /usr/share/empty/fs/aufs/plink.c linux/fs/aufs/plink.c + AuDebugOn(au_plink_maint(inode->i_sb, AuLock_NOPLM)); + + br = au_sbr(inode->i_sb, bindex); -+ h_parent = br->br_wbr->wbr_plink; ++ h_ppath.dentry = br->br_wbr->wbr_plink; ++ h_ppath.mnt = au_br_mnt(br); + tgtname.len = plink_name(a, sizeof(a), inode, bindex); + + if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID)) { + struct au_do_plink_lkup_args args = { + .errp = &h_dentry, + .tgtname = &tgtname, -+ .h_parent = h_parent, -+ .br = br ++ .h_ppath = &h_ppath + }; + + wkq_err = au_wkq_wait(au_call_do_plink_lkup, &args); + if (unlikely(wkq_err)) + h_dentry = ERR_PTR(wkq_err); + } else -+ h_dentry = au_do_plink_lkup(&tgtname, h_parent, br); ++ h_dentry = au_do_plink_lkup(&tgtname, &h_ppath); + + return h_dentry; +} + +/* create a pseudo-link */ -+static int do_whplink(struct qstr *tgt, struct dentry *h_parent, -+ struct dentry *h_dentry, struct au_branch *br) ++static int do_whplink(struct qstr *tgt, struct path *h_ppath, ++ struct dentry *h_dentry) +{ + int err; -+ struct path h_path = { -+ .mnt = au_br_mnt(br) -+ }; ++ struct path h_path; + struct inode *h_dir, *delegated; + -+ h_dir = d_inode(h_parent); ++ h_dir = d_inode(h_ppath->dentry); + inode_lock_nested(h_dir, AuLsc_I_CHILD2); ++ h_path.mnt = h_ppath->mnt; +again: -+ h_path.dentry = vfsub_lkup_one(tgt, h_parent); ++ h_path.dentry = vfsub_lkup_one(tgt, h_ppath); + err = PTR_ERR(h_path.dentry); + if (IS_ERR(h_path.dentry)) + goto out; @@ -28115,28 +28470,30 @@ diff -urN /usr/share/empty/fs/aufs/plink.c linux/fs/aufs/plink.c +struct do_whplink_args { + int *errp; + struct qstr *tgt; -+ struct dentry *h_parent; ++ struct path *h_ppath; + struct dentry *h_dentry; -+ struct au_branch *br; +}; + +static void call_do_whplink(void *args) +{ + struct do_whplink_args *a = args; -+ *a->errp = do_whplink(a->tgt, a->h_parent, a->h_dentry, a->br); ++ *a->errp = do_whplink(a->tgt, a->h_ppath, a->h_dentry); +} + +static int whplink(struct dentry *h_dentry, struct inode *inode, -+ aufs_bindex_t bindex, struct au_branch *br) ++ aufs_bindex_t bindex) +{ + int err, wkq_err; ++ struct au_branch *br; + struct au_wbr *wbr; -+ struct dentry *h_parent; ++ struct path h_ppath; + char a[PLINK_NAME_LEN]; + struct qstr tgtname = QSTR_INIT(a, 0); + -+ wbr = au_sbr(inode->i_sb, bindex)->br_wbr; -+ h_parent = wbr->wbr_plink; ++ br = au_sbr(inode->i_sb, bindex); ++ wbr = br->br_wbr; ++ h_ppath.dentry = wbr->wbr_plink; ++ h_ppath.mnt = au_br_mnt(br); + tgtname.len = plink_name(a, sizeof(a), inode, bindex); + + /* always superio. */ @@ -28144,15 +28501,14 @@ diff -urN /usr/share/empty/fs/aufs/plink.c linux/fs/aufs/plink.c + struct do_whplink_args args = { + .errp = &err, + .tgt = &tgtname, -+ .h_parent = h_parent, -+ .h_dentry = h_dentry, -+ .br = br ++ .h_ppath = &h_ppath, ++ .h_dentry = h_dentry + }; + wkq_err = au_wkq_wait(call_do_whplink, &args); + if (unlikely(wkq_err)) + err = wkq_err; + } else -+ err = do_whplink(&tgtname, h_parent, h_dentry, br); ++ err = do_whplink(&tgtname, &h_ppath, h_dentry); + + return err; +} @@ -28202,7 +28558,7 @@ diff -urN /usr/share/empty/fs/aufs/plink.c linux/fs/aufs/plink.c + if (cnt > AUFS_PLINK_WARN) + AuWarn1(msg ", %d\n", cnt); +#undef msg -+ err = whplink(h_dentry, inode, bindex, au_sbr(sb, bindex)); ++ err = whplink(h_dentry, inode, bindex); + if (unlikely(err)) { + pr_warn("err %d, damaged pseudo link.\n", err); + au_hbl_del(&icntnr->plink, hbl); @@ -28315,11 +28671,11 @@ diff -urN /usr/share/empty/fs/aufs/plink.c linux/fs/aufs/plink.c +} diff -urN /usr/share/empty/fs/aufs/poll.c linux/fs/aufs/poll.c --- /usr/share/empty/fs/aufs/poll.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/poll.c 2020-01-27 10:57:18.175538316 +0100 ++++ linux/fs/aufs/poll.c 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -28370,11 +28726,11 @@ diff -urN /usr/share/empty/fs/aufs/poll.c linux/fs/aufs/poll.c +} diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c --- /usr/share/empty/fs/aufs/posix_acl.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/posix_acl.c 2020-01-27 10:57:18.175538316 +0100 -@@ -0,0 +1,105 @@ ++++ linux/fs/aufs/posix_acl.c 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,111 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2014-2020 Junjiro R. Okajima ++ * Copyright (C) 2014-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -28397,7 +28753,7 @@ diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c +#include +#include "aufs.h" + -+struct posix_acl *aufs_get_acl(struct inode *inode, int type) ++struct posix_acl *aufs_get_acl(struct inode *inode, int type, bool rcu) +{ + struct posix_acl *acl; + int err; @@ -28405,12 +28761,16 @@ diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c + struct inode *h_inode; + struct super_block *sb; + ++ acl = ERR_PTR(-ECHILD); ++ if (rcu) ++ goto out; ++ + acl = NULL; + sb = inode->i_sb; + si_read_lock(sb, AuLock_FLUSH); + ii_read_lock_child(inode); + if (!(sb->s_flags & SB_POSIXACL)) -+ goto out; ++ goto unlock; + + bindex = au_ibtop(inode); + h_inode = au_h_iptr(inode, bindex); @@ -28419,7 +28779,7 @@ diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c + != (inode->i_mode & S_IFMT)))) { + err = au_busy_or_stale(); + acl = ERR_PTR(err); -+ goto out; ++ goto unlock; + } + + /* always topmost only */ @@ -28429,15 +28789,17 @@ diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c + else + set_cached_acl(inode, type, acl); + -+out: ++unlock: + ii_read_unlock(inode); + si_read_unlock(sb); + ++out: + AuTraceErrPtr(acl); + return acl; +} + -+int aufs_set_acl(struct inode *inode, struct posix_acl *acl, int type) ++int aufs_set_acl(struct user_namespace *userns, struct inode *inode, ++ struct posix_acl *acl, int type) +{ + int err; + ssize_t ssz; @@ -28479,11 +28841,11 @@ diff -urN /usr/share/empty/fs/aufs/posix_acl.c linux/fs/aufs/posix_acl.c +} diff -urN /usr/share/empty/fs/aufs/procfs.c linux/fs/aufs/procfs.c --- /usr/share/empty/fs/aufs/procfs.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/procfs.c 2020-08-03 09:14:43.142321747 +0200 ++++ linux/fs/aufs/procfs.c 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,170 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2010-2020 Junjiro R. Okajima ++ * Copyright (C) 2010-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -28653,11 +29015,11 @@ diff -urN /usr/share/empty/fs/aufs/procfs.c linux/fs/aufs/procfs.c +} diff -urN /usr/share/empty/fs/aufs/rdu.c linux/fs/aufs/rdu.c --- /usr/share/empty/fs/aufs/rdu.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/rdu.c 2020-01-27 10:57:18.178871751 +0100 ++++ linux/fs/aufs/rdu.c 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,384 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -29041,11 +29403,11 @@ diff -urN /usr/share/empty/fs/aufs/rdu.c linux/fs/aufs/rdu.c +#endif diff -urN /usr/share/empty/fs/aufs/rwsem.h linux/fs/aufs/rwsem.h --- /usr/share/empty/fs/aufs/rwsem.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/rwsem.h 2020-01-27 10:57:18.178871751 +0100 -@@ -0,0 +1,73 @@ ++++ linux/fs/aufs/rwsem.h 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,85 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -29077,19 +29439,31 @@ diff -urN /usr/share/empty/fs/aufs/rwsem.h linux/fs/aufs/rwsem.h + +/* to debug easier, do not make them inlined functions */ +#define AuRwMustNoWaiters(rw) AuDebugOn(rwsem_is_contended(rw)) ++ ++#ifdef CONFIG_LOCKDEP +/* rwsem_is_locked() is unusable */ -+#define AuRwMustReadLock(rw) AuDebugOn(!lockdep_recursing(current) \ -+ && debug_locks \ ++#define AuRwMustReadLock(rw) AuDebugOn(IS_ENABLED(CONFIG_LOCKDEP) \ ++ && !lockdep_recursing(current) \ ++ && debug_locks \ + && !lockdep_is_held_type(rw, 1)) -+#define AuRwMustWriteLock(rw) AuDebugOn(!lockdep_recursing(current) \ -+ && debug_locks \ ++#define AuRwMustWriteLock(rw) AuDebugOn(IS_ENABLED(CONFIG_LOCKDEP) \ ++ && !lockdep_recursing(current) \ ++ && debug_locks \ + && !lockdep_is_held_type(rw, 0)) -+#define AuRwMustAnyLock(rw) AuDebugOn(!lockdep_recursing(current) \ -+ && debug_locks \ ++#define AuRwMustAnyLock(rw) AuDebugOn(IS_ENABLED(CONFIG_LOCKDEP) \ ++ && !lockdep_recursing(current) \ ++ && debug_locks \ + && !lockdep_is_held(rw)) -+#define AuRwDestroy(rw) AuDebugOn(!lockdep_recursing(current) \ -+ && debug_locks \ ++#define AuRwDestroy(rw) AuDebugOn(IS_ENABLED(CONFIG_LOCKDEP) \ ++ && !lockdep_recursing(current) \ ++ && debug_locks \ + && lockdep_is_held(rw)) ++#else ++#define AuRwMustReadLock(rw) do {} while (0) ++#define AuRwMustWriteLock(rw) do {} while (0) ++#define AuRwMustAnyLock(rw) do {} while (0) ++#define AuRwDestroy(rw) do {} while (0) ++#endif + +#define au_rw_init(rw) init_rwsem(rw) + @@ -29118,11 +29492,11 @@ diff -urN /usr/share/empty/fs/aufs/rwsem.h linux/fs/aufs/rwsem.h +#endif /* __AUFS_RWSEM_H__ */ diff -urN /usr/share/empty/fs/aufs/sbinfo.c linux/fs/aufs/sbinfo.c --- /usr/share/empty/fs/aufs/sbinfo.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/sbinfo.c 2020-01-27 10:57:18.178871751 +0100 -@@ -0,0 +1,314 @@ ++++ linux/fs/aufs/sbinfo.c 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,316 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -29178,10 +29552,10 @@ diff -urN /usr/share/empty/fs/aufs/sbinfo.c linux/fs/aufs/sbinfo.c + au_kfree_rcu(sbinfo); +} + -+int au_si_alloc(struct super_block *sb) ++struct au_sbinfo *au_si_alloc(struct super_block *sb) +{ -+ int err, i; + struct au_sbinfo *sbinfo; ++ int err, i; + + err = -ENOMEM; + sbinfo = kzalloc(sizeof(*sbinfo), GFP_NOFS); @@ -29246,16 +29620,18 @@ diff -urN /usr/share/empty/fs/aufs/sbinfo.c linux/fs/aufs/sbinfo.c + + /* leave other members for sysaufs and si_mnt. */ + sbinfo->si_sb = sb; -+ sb->s_fs_info = sbinfo; -+ si_pid_set(sb); -+ return 0; /* success */ ++ if (sb) { ++ sb->s_fs_info = sbinfo; ++ si_pid_set(sb); ++ } ++ return sbinfo; /* success */ + +out_br: + au_kfree_try_rcu(sbinfo->si_branch); +out_sbinfo: + au_kfree_rcu(sbinfo); +out: -+ return err; ++ return ERR_PTR(err); +} + +int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink) @@ -29436,11 +29812,11 @@ diff -urN /usr/share/empty/fs/aufs/sbinfo.c linux/fs/aufs/sbinfo.c +} diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c --- /usr/share/empty/fs/aufs/super.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/super.c 2020-01-27 10:57:18.178871751 +0100 -@@ -0,0 +1,1047 @@ ++++ linux/fs/aufs/super.c 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,871 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -29474,7 +29850,7 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c +{ + struct au_icntnr *c; + -+ c = au_cache_alloc_icntnr(); ++ c = au_cache_alloc_icntnr(sb); + if (c) { + au_icntnr_init(c); + inode_set_iversion(&c->vfs_inode, 1); /* sigen(sb); */ @@ -29893,7 +30269,7 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c + continue; + + h_sb = au_sbr_sb(sb, bindex); -+ e = vfsub_sync_filesystem(h_sb, wait); ++ e = vfsub_sync_filesystem(h_sb); + if (unlikely(e && !err)) + err = e; + /* go on even if an error happens */ @@ -30141,7 +30517,7 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c + return err; +} + -+static void au_remount_refresh(struct super_block *sb, unsigned int do_idop) ++void au_remount_refresh(struct super_block *sb, unsigned int do_idop) +{ + int err, e; + unsigned int udba; @@ -30202,92 +30578,7 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c + AuIOErr("refresh failed, ignored, %d\n", err); +} + -+/* stop extra interpretation of errno in mount(8), and strange error messages */ -+static int cvt_err(int err) -+{ -+ AuTraceErr(err); -+ -+ switch (err) { -+ case -ENOENT: -+ case -ENOTDIR: -+ case -EEXIST: -+ case -EIO: -+ err = -EINVAL; -+ } -+ return err; -+} -+ -+static int aufs_remount_fs(struct super_block *sb, int *flags, char *data) -+{ -+ int err, do_dx; -+ unsigned int mntflags; -+ struct au_opts opts = { -+ .opt = NULL -+ }; -+ struct dentry *root; -+ struct inode *inode; -+ struct au_sbinfo *sbinfo; -+ -+ err = 0; -+ root = sb->s_root; -+ if (!data || !*data) { -+ err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM); -+ if (!err) { -+ di_write_lock_child(root); -+ err = au_opts_verify(sb, *flags, /*pending*/0); -+ aufs_write_unlock(root); -+ } -+ goto out; -+ } -+ -+ err = -ENOMEM; -+ opts.opt = (void *)__get_free_page(GFP_NOFS); -+ if (unlikely(!opts.opt)) -+ goto out; -+ opts.max_opt = PAGE_SIZE / sizeof(*opts.opt); -+ opts.flags = AuOpts_REMOUNT; -+ opts.sb_flags = *flags; -+ -+ /* parse it before aufs lock */ -+ err = au_opts_parse(sb, data, &opts); -+ if (unlikely(err)) -+ goto out_opts; -+ -+ sbinfo = au_sbi(sb); -+ inode = d_inode(root); -+ inode_lock(inode); -+ err = si_write_lock(sb, AuLock_FLUSH | AuLock_NOPLM); -+ if (unlikely(err)) -+ goto out_mtx; -+ di_write_lock_child(root); -+ -+ /* au_opts_remount() may return an error */ -+ err = au_opts_remount(sb, &opts); -+ au_opts_free(&opts); -+ -+ if (au_ftest_opts(opts.flags, REFRESH)) -+ au_remount_refresh(sb, au_ftest_opts(opts.flags, REFRESH_IDOP)); -+ -+ if (au_ftest_opts(opts.flags, REFRESH_DYAOP)) { -+ mntflags = au_mntflags(sb); -+ do_dx = !!au_opt_test(mntflags, DIO); -+ au_dy_arefresh(do_dx); -+ } -+ -+ au_fhsm_wrote_all(sb, /*force*/1); /* ?? */ -+ aufs_write_unlock(root); -+ -+out_mtx: -+ inode_unlock(inode); -+out_opts: -+ free_page((unsigned long)opts.opt); -+out: -+ err = cvt_err(err); -+ AuTraceErr(err); -+ return err; -+} -+ -+static const struct super_operations aufs_sop = { ++const struct super_operations aufs_sop = { + .alloc_inode = aufs_alloc_inode, + .destroy_inode = aufs_destroy_inode, + .free_inode = aufs_free_inode, @@ -30296,13 +30587,12 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c + .show_options = aufs_show_options, + .statfs = aufs_statfs, + .put_super = aufs_put_super, -+ .sync_fs = aufs_sync_fs, -+ .remount_fs = aufs_remount_fs ++ .sync_fs = aufs_sync_fs +}; + +/* ---------------------------------------------------------------------- */ + -+static int alloc_root(struct super_block *sb) ++int au_alloc_root(struct super_block *sb) +{ + int err; + struct inode *inode; @@ -30338,160 +30628,70 @@ diff -urN /usr/share/empty/fs/aufs/super.c linux/fs/aufs/super.c + return err; +} + -+static int aufs_fill_super(struct super_block *sb, void *raw_data, -+ int silent __maybe_unused) ++/* ---------------------------------------------------------------------- */ ++ ++static void aufs_kill_sb(struct super_block *sb) +{ -+ int err; -+ struct au_opts opts = { -+ .opt = NULL -+ }; + struct au_sbinfo *sbinfo; + struct dentry *root; -+ struct inode *inode; -+ char *arg = raw_data; + -+ if (unlikely(!arg || !*arg)) { -+ err = -EINVAL; -+ pr_err("no arg\n"); -+ goto out; -+ } -+ -+ err = -ENOMEM; -+ opts.opt = (void *)__get_free_page(GFP_NOFS); -+ if (unlikely(!opts.opt)) ++ sbinfo = au_sbi(sb); ++ if (!sbinfo) + goto out; -+ opts.max_opt = PAGE_SIZE / sizeof(*opts.opt); -+ opts.sb_flags = sb->s_flags; + -+ err = au_si_alloc(sb); -+ if (unlikely(err)) -+ goto out_opts; -+ sbinfo = au_sbi(sb); ++ au_sbilist_del(sb); + -+ /* all timestamps always follow the ones on the branch */ -+ sb->s_flags |= SB_NOATIME | SB_NODIRATIME; -+ sb->s_flags |= SB_I_VERSION; /* do we really need this? */ -+ sb->s_op = &aufs_sop; -+ sb->s_d_op = &aufs_dop; -+ sb->s_magic = AUFS_SUPER_MAGIC; -+ sb->s_maxbytes = 0; -+ sb->s_stack_depth = 1; -+ au_export_init(sb); -+ au_xattr_init(sb); -+ -+ err = alloc_root(sb); -+ if (unlikely(err)) { -+ si_write_unlock(sb); -+ goto out_info; -+ } + root = sb->s_root; -+ inode = d_inode(root); -+ -+ /* -+ * actually we can parse options regardless aufs lock here. -+ * but at remount time, parsing must be done before aufs lock. -+ * so we follow the same rule. -+ */ -+ ii_write_lock_parent(inode); -+ aufs_write_unlock(root); -+ err = au_opts_parse(sb, arg, &opts); -+ if (unlikely(err)) -+ goto out_root; ++ if (root) ++ aufs_write_lock(root); ++ else ++ __si_write_lock(sb); + -+ /* lock vfs_inode first, then aufs. */ -+ inode_lock(inode); -+ aufs_write_lock(root); -+ err = au_opts_mount(sb, &opts); -+ au_opts_free(&opts); -+ if (!err && au_ftest_si(sbinfo, NO_DREVAL)) { -+ sb->s_d_op = &aufs_dop_noreval; -+ pr_info("%ps\n", sb->s_d_op); -+ au_refresh_dop(root, /*force_reval*/0); -+ sbinfo->si_iop_array = aufs_iop_nogetattr; -+ au_refresh_iop(inode, /*force_getattr*/0); ++ au_fhsm_fin(sb); ++ if (sbinfo->si_wbr_create_ops->fin) ++ sbinfo->si_wbr_create_ops->fin(sb); ++ if (au_opt_test(sbinfo->si_mntflags, UDBA_HNOTIFY)) { ++ au_opt_set_udba(sbinfo->si_mntflags, UDBA_NONE); ++ au_remount_refresh(sb, /*do_idop*/0); + } -+ aufs_write_unlock(root); -+ inode_unlock(inode); -+ if (!err) -+ goto out_opts; /* success */ -+ -+out_root: -+ dput(root); -+ sb->s_root = NULL; -+out_info: -+ kobject_put(&sbinfo->si_kobj); -+ sb->s_fs_info = NULL; -+out_opts: -+ free_page((unsigned long)opts.opt); -+out: -+ AuTraceErr(err); -+ err = cvt_err(err); -+ AuTraceErr(err); -+ return err; -+} -+ -+/* ---------------------------------------------------------------------- */ -+ -+static struct dentry *aufs_mount(struct file_system_type *fs_type, int flags, -+ const char *dev_name __maybe_unused, -+ void *raw_data) -+{ -+ struct dentry *root; ++ if (au_opt_test(sbinfo->si_mntflags, PLINK)) ++ au_plink_put(sb, /*verbose*/1); ++ au_xino_clr(sb); ++ if (root) ++ au_dr_opt_flush(sb); + -+ /* all timestamps always follow the ones on the branch */ -+ /* mnt->mnt_flags |= MNT_NOATIME | MNT_NODIRATIME; */ -+ root = mount_nodev(fs_type, flags, raw_data, aufs_fill_super); -+ if (IS_ERR(root)) -+ goto out; ++ if (root) ++ aufs_write_unlock(root); ++ else ++ __si_write_unlock(sb); + -+ au_sbilist_add(root->d_sb); ++ sbinfo->si_sb = NULL; ++ au_nwt_flush(&sbinfo->si_nowait); + +out: -+ return root; -+} -+ -+static void aufs_kill_sb(struct super_block *sb) -+{ -+ struct au_sbinfo *sbinfo; -+ -+ sbinfo = au_sbi(sb); -+ if (sbinfo) { -+ au_sbilist_del(sb); -+ aufs_write_lock(sb->s_root); -+ au_fhsm_fin(sb); -+ if (sbinfo->si_wbr_create_ops->fin) -+ sbinfo->si_wbr_create_ops->fin(sb); -+ if (au_opt_test(sbinfo->si_mntflags, UDBA_HNOTIFY)) { -+ au_opt_set_udba(sbinfo->si_mntflags, UDBA_NONE); -+ au_remount_refresh(sb, /*do_idop*/0); -+ } -+ if (au_opt_test(sbinfo->si_mntflags, PLINK)) -+ au_plink_put(sb, /*verbose*/1); -+ au_xino_clr(sb); -+ au_dr_opt_flush(sb); -+ sbinfo->si_sb = NULL; -+ aufs_write_unlock(sb->s_root); -+ au_nwt_flush(&sbinfo->si_nowait); -+ } + kill_anon_super(sb); +} + +struct file_system_type aufs_fs_type = { + .name = AUFS_FSTYPE, + /* a race between rename and others */ -+ .fs_flags = FS_RENAME_DOES_D_MOVE, -+ .mount = aufs_mount, ++ .fs_flags = FS_RENAME_DOES_D_MOVE ++ /* untested */ ++ /*| FS_ALLOW_IDMAP*/ ++ , ++ .init_fs_context = aufs_fsctx_init, ++ .parameters = aufs_fsctx_paramspec, + .kill_sb = aufs_kill_sb, + /* no need to __module_get() and module_put(). */ + .owner = THIS_MODULE, +}; diff -urN /usr/share/empty/fs/aufs/super.h linux/fs/aufs/super.h --- /usr/share/empty/fs/aufs/super.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/super.h 2020-01-27 10:57:18.178871751 +0100 -@@ -0,0 +1,589 @@ ++++ linux/fs/aufs/super.h 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,592 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -30622,8 +30822,6 @@ diff -urN /usr/share/empty/fs/aufs/super.h linux/fs/aufs/super.h + unsigned int si_mntflags; + + /* external inode number (bitmap and translation table) */ -+ vfs_readf_t si_xread; -+ vfs_writef_t si_xwrite; + loff_t si_ximaxent; /* max entries in a xino */ + + struct file *si_xib; @@ -30754,8 +30952,8 @@ diff -urN /usr/share/empty/fs/aufs/super.h linux/fs/aufs/super.h +/* ---------------------------------------------------------------------- */ + +/* super.c */ -+extern struct file_system_type aufs_fs_type; +struct inode *au_iget_locked(struct super_block *sb, ino_t ino); ++ +typedef unsigned long long (*au_arraycb_t)(struct super_block *sb, void *array, + unsigned long long max, void *arg); +void *au_array_alloc(unsigned long long *hint, au_arraycb_t cb, @@ -30763,9 +30961,14 @@ diff -urN /usr/share/empty/fs/aufs/super.h linux/fs/aufs/super.h +struct inode **au_iarray_alloc(struct super_block *sb, unsigned long long *max); +void au_iarray_free(struct inode **a, unsigned long long max); + ++void au_remount_refresh(struct super_block *sb, unsigned int do_idop); ++extern const struct super_operations aufs_sop; ++int au_alloc_root(struct super_block *sb); ++extern struct file_system_type aufs_fs_type; ++ +/* sbinfo.c */ +void au_si_free(struct kobject *kobj); -+int au_si_alloc(struct super_block *sb); ++struct au_sbinfo *au_si_alloc(struct super_block *sb); +int au_sbr_realloc(struct au_sbinfo *sbinfo, int nbr, int may_shrink); + +unsigned int au_sigen_inc(struct super_block *sb); @@ -31080,11 +31283,11 @@ diff -urN /usr/share/empty/fs/aufs/super.h linux/fs/aufs/super.h +#endif /* __AUFS_SUPER_H__ */ diff -urN /usr/share/empty/fs/aufs/sysaufs.c linux/fs/aufs/sysaufs.c --- /usr/share/empty/fs/aufs/sysaufs.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/sysaufs.c 2020-01-27 10:57:18.178871751 +0100 -@@ -0,0 +1,93 @@ ++++ linux/fs/aufs/sysaufs.c 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,94 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -31121,6 +31324,7 @@ diff -urN /usr/share/empty/fs/aufs/sysaufs.c linux/fs/aufs/sysaufs.c + &sysaufs_si_attr_xi_path.attr, + NULL, +}; ++ATTRIBUTE_GROUPS(sysaufs_si); + +static const struct sysfs_ops au_sbi_ops = { + .show = sysaufs_si_show @@ -31129,7 +31333,7 @@ diff -urN /usr/share/empty/fs/aufs/sysaufs.c linux/fs/aufs/sysaufs.c +static struct kobj_type au_sbi_ktype = { + .release = au_si_free, + .sysfs_ops = &au_sbi_ops, -+ .default_attrs = sysaufs_si_attrs ++ .default_groups = sysaufs_si_groups +}; + +/* ---------------------------------------------------------------------- */ @@ -31177,11 +31381,11 @@ diff -urN /usr/share/empty/fs/aufs/sysaufs.c linux/fs/aufs/sysaufs.c +} diff -urN /usr/share/empty/fs/aufs/sysaufs.h linux/fs/aufs/sysaufs.h --- /usr/share/empty/fs/aufs/sysaufs.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/sysaufs.h 2020-01-27 10:57:18.178871751 +0100 ++++ linux/fs/aufs/sysaufs.h 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,102 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -31283,11 +31487,11 @@ diff -urN /usr/share/empty/fs/aufs/sysaufs.h linux/fs/aufs/sysaufs.h +#endif /* __SYSAUFS_H__ */ diff -urN /usr/share/empty/fs/aufs/sysfs.c linux/fs/aufs/sysfs.c --- /usr/share/empty/fs/aufs/sysfs.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/sysfs.c 2020-01-27 10:57:18.178871751 +0100 ++++ linux/fs/aufs/sysfs.c 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,374 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -31661,11 +31865,11 @@ diff -urN /usr/share/empty/fs/aufs/sysfs.c linux/fs/aufs/sysfs.c +} diff -urN /usr/share/empty/fs/aufs/sysrq.c linux/fs/aufs/sysrq.c --- /usr/share/empty/fs/aufs/sysrq.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/sysrq.c 2020-01-27 10:57:18.178871751 +0100 ++++ linux/fs/aufs/sysrq.c 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -31814,11 +32018,11 @@ diff -urN /usr/share/empty/fs/aufs/sysrq.c linux/fs/aufs/sysrq.c +} diff -urN /usr/share/empty/fs/aufs/vdir.c linux/fs/aufs/vdir.c --- /usr/share/empty/fs/aufs/vdir.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/vdir.c 2020-01-27 10:57:18.178871751 +0100 ++++ linux/fs/aufs/vdir.c 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,896 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -32714,11 +32918,11 @@ diff -urN /usr/share/empty/fs/aufs/vdir.c linux/fs/aufs/vdir.c +} diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c --- /usr/share/empty/fs/aufs/vfsub.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/vfsub.c 2020-08-03 09:14:46.095748745 +0200 -@@ -0,0 +1,895 @@ ++++ linux/fs/aufs/vfsub.c 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,918 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -32739,7 +32943,6 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + */ + +#include -+#include +#include +#include +#include @@ -32755,13 +32958,13 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +} +#endif + -+int vfsub_sync_filesystem(struct super_block *h_sb, int wait) ++int vfsub_sync_filesystem(struct super_block *h_sb) +{ + int err; + + lockdep_off(); + down_read(&h_sb->s_umount); -+ err = __sync_filesystem(h_sb, wait); ++ err = sync_filesystem(h_sb); + up_read(&h_sb->s_umount); + lockdep_on(); + @@ -32776,6 +32979,11 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + struct kstat st; + struct super_block *h_sb; + ++ /* ++ * Always needs h_path->mnt for LSM or FUSE branch. ++ */ ++ AuDebugOn(!h_path->mnt); ++ + /* for remote fs, leave work for its getattr or d_revalidate */ + /* for bad i_attr fs, handle them in aufs_getattr() */ + /* still some fs may acquire i_mutex. we need to skip them */ @@ -32884,38 +33092,38 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +} + +struct dentry *vfsub_lookup_one_len_unlocked(const char *name, -+ struct dentry *parent, int len) ++ struct path *ppath, int len) +{ -+ struct path path = { -+ .mnt = NULL -+ }; ++ struct path path; + -+ path.dentry = lookup_one_len_unlocked(name, parent, len); ++ path.dentry = lookup_one_len_unlocked(name, ppath->dentry, len); + if (IS_ERR(path.dentry)) + goto out; -+ if (d_is_positive(path.dentry)) ++ if (d_is_positive(path.dentry)) { ++ path.mnt = ppath->mnt; + vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/ ++ } + +out: + AuTraceErrPtr(path.dentry); + return path.dentry; +} + -+struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent, ++struct dentry *vfsub_lookup_one_len(const char *name, struct path *ppath, + int len) +{ -+ struct path path = { -+ .mnt = NULL -+ }; ++ struct path path; + + /* VFS checks it too, but by WARN_ON_ONCE() */ -+ IMustLock(d_inode(parent)); ++ IMustLock(d_inode(ppath->dentry)); + -+ path.dentry = lookup_one_len(name, parent, len); ++ path.dentry = lookup_one_len(name, ppath->dentry, len); + if (IS_ERR(path.dentry)) + goto out; -+ if (d_is_positive(path.dentry)) ++ if (d_is_positive(path.dentry)) { ++ path.mnt = ppath->mnt; + vfsub_update_h_iattr(&path, /*did*/NULL); /*ignore*/ ++ } + +out: + AuTraceErrPtr(path.dentry); @@ -32925,7 +33133,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +void vfsub_call_lkup_one(void *args) +{ + struct vfsub_lkup_one_args *a = args; -+ *a->errp = vfsub_lkup_one(a->name, a->parent); ++ *a->errp = vfsub_lkup_one(a->name, a->ppath); +} + +/* ---------------------------------------------------------------------- */ @@ -32962,6 +33170,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +{ + int err; + struct dentry *d; ++ struct user_namespace *userns; + + IMustLock(dir); + @@ -32971,9 +33180,10 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + path->dentry = d; + if (unlikely(err)) + goto out; ++ userns = mnt_user_ns(path->mnt); + + lockdep_off(); -+ err = vfs_create(dir, path->dentry, mode, want_excl); ++ err = vfs_create(userns, dir, path->dentry, mode, want_excl); + lockdep_on(); + if (!err) { + struct path tmp = *path; @@ -32995,6 +33205,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +{ + int err; + struct dentry *d; ++ struct user_namespace *userns; + + IMustLock(dir); + @@ -33004,9 +33215,10 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + path->dentry = d; + if (unlikely(err)) + goto out; ++ userns = mnt_user_ns(path->mnt); + + lockdep_off(); -+ err = vfs_symlink(dir, path->dentry, symname); ++ err = vfs_symlink(userns, dir, path->dentry, symname); + lockdep_on(); + if (!err) { + struct path tmp = *path; @@ -33028,6 +33240,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +{ + int err; + struct dentry *d; ++ struct user_namespace *userns; + + IMustLock(dir); + @@ -33037,9 +33250,10 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + path->dentry = d; + if (unlikely(err)) + goto out; ++ userns = mnt_user_ns(path->mnt); + + lockdep_off(); -+ err = vfs_mknod(dir, path->dentry, mode, dev); ++ err = vfs_mknod(userns, dir, path->dentry, mode, dev); + lockdep_on(); + if (!err) { + struct path tmp = *path; @@ -33072,6 +33286,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +{ + int err; + struct dentry *d; ++ struct user_namespace *userns; + + IMustLock(dir); + @@ -33086,9 +33301,10 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + path->dentry = d; + if (unlikely(err)) + goto out; ++ userns = mnt_user_ns(path->mnt); + + lockdep_off(); -+ err = vfs_link(src_dentry, dir, path->dentry, delegated_inode); ++ err = vfs_link(src_dentry, userns, dir, path->dentry, delegated_inode); + lockdep_on(); + if (!err) { + struct path tmp = *path; @@ -33114,6 +33330,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + struct inode **delegated_inode, unsigned int flags) +{ + int err; ++ struct renamedata rd; + struct path tmp = { + .mnt = path->mnt + }; @@ -33130,9 +33347,16 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + if (unlikely(err)) + goto out; + ++ rd.old_mnt_userns = mnt_user_ns(path->mnt); ++ rd.old_dir = src_dir; ++ rd.old_dentry = src_dentry; ++ rd.new_mnt_userns = rd.old_mnt_userns; ++ rd.new_dir = dir; ++ rd.new_dentry = path->dentry; ++ rd.delegated_inode = delegated_inode; ++ rd.flags = flags; + lockdep_off(); -+ err = vfs_rename(src_dir, src_dentry, dir, path->dentry, -+ delegated_inode, flags); ++ err = vfs_rename(&rd); + lockdep_on(); + if (!err) { + int did; @@ -33156,6 +33380,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +{ + int err; + struct dentry *d; ++ struct user_namespace *userns; + + IMustLock(dir); + @@ -33165,9 +33390,10 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + path->dentry = d; + if (unlikely(err)) + goto out; ++ userns = mnt_user_ns(path->mnt); + + lockdep_off(); -+ err = vfs_mkdir(dir, path->dentry, mode); ++ err = vfs_mkdir(userns, dir, path->dentry, mode); + lockdep_on(); + if (!err) { + struct path tmp = *path; @@ -33189,6 +33415,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +{ + int err; + struct dentry *d; ++ struct user_namespace *userns; + + IMustLock(dir); + @@ -33198,9 +33425,10 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + path->dentry = d; + if (unlikely(err)) + goto out; ++ userns = mnt_user_ns(path->mnt); + + lockdep_off(); -+ err = vfs_rmdir(dir, path->dentry); ++ err = vfs_rmdir(userns, dir, path->dentry); + lockdep_on(); + if (!err) { + struct path tmp = { @@ -33231,22 +33459,17 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + return err; +} + -+/* todo: kernel_read()? */ +ssize_t vfsub_read_k(struct file *file, void *kbuf, size_t count, + loff_t *ppos) +{ + ssize_t err; -+ mm_segment_t oldfs; -+ union { -+ void *k; -+ char __user *u; -+ } buf; + -+ buf.k = kbuf; -+ oldfs = get_fs(); -+ set_fs(KERNEL_DS); -+ err = vfsub_read_u(file, buf.u, count, ppos); -+ set_fs(oldfs); ++ lockdep_off(); ++ err = kernel_read(file, kbuf, count, ppos); ++ lockdep_on(); ++ AuTraceErr(err); ++ if (err >= 0) ++ vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + return err; +} + @@ -33266,17 +33489,12 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +ssize_t vfsub_write_k(struct file *file, void *kbuf, size_t count, loff_t *ppos) +{ + ssize_t err; -+ mm_segment_t oldfs; -+ union { -+ void *k; -+ const char __user *u; -+ } buf; + -+ buf.k = kbuf; -+ oldfs = get_fs(); -+ set_fs(KERNEL_DS); -+ err = vfsub_write_u(file, buf.u, count, ppos); -+ set_fs(oldfs); ++ lockdep_off(); ++ err = kernel_write(file, kbuf, count, ppos); ++ lockdep_on(); ++ if (err >= 0) ++ vfsub_update_h_iattr(&file->f_path, /*did*/NULL); /*ignore*/ + return err; +} + @@ -33368,6 +33586,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + int err; + struct inode *h_inode; + struct super_block *h_sb; ++ struct user_namespace *h_userns; + + if (!h_file) { + err = vfsub_truncate(h_path, length); @@ -33379,12 +33598,12 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + lockdep_off(); + sb_start_write(h_sb); + lockdep_on(); -+ err = locks_verify_truncate(h_inode, h_file, length); -+ if (!err) -+ err = security_path_truncate(h_path); ++ err = security_path_truncate(h_path); + if (!err) { ++ h_userns = mnt_user_ns(h_path->mnt); + lockdep_off(); -+ err = do_truncate(h_path->dentry, length, attr, h_file); ++ err = do_truncate(h_userns, h_path->dentry, length, attr, ++ h_file); + lockdep_on(); + } + lockdep_off(); @@ -33413,8 +33632,10 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +int vfsub_sio_mkdir(struct inode *dir, struct path *path, int mode) +{ + int err, do_sio, wkq_err; ++ struct user_namespace *userns; + -+ do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE); ++ userns = mnt_user_ns(path->mnt); ++ do_sio = au_test_h_perm_sio(userns, dir, MAY_EXEC | MAY_WRITE); + if (!do_sio) { + lockdep_off(); + err = vfsub_mkdir(dir, path, mode); @@ -33449,8 +33670,10 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +int vfsub_sio_rmdir(struct inode *dir, struct path *path) +{ + int err, do_sio, wkq_err; ++ struct user_namespace *userns; + -+ do_sio = au_test_h_perm_sio(dir, MAY_EXEC | MAY_WRITE); ++ userns = mnt_user_ns(path->mnt); ++ do_sio = au_test_h_perm_sio(userns, dir, MAY_EXEC | MAY_WRITE); + if (!do_sio) { + lockdep_off(); + err = vfsub_rmdir(dir, path); @@ -33482,14 +33705,16 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +{ + struct notify_change_args *a = args; + struct inode *h_inode; ++ struct user_namespace *userns; + + h_inode = d_inode(a->path->dentry); + IMustLock(h_inode); + + *a->errp = -EPERM; + if (!IS_IMMUTABLE(h_inode) && !IS_APPEND(h_inode)) { ++ userns = mnt_user_ns(a->path->mnt); + lockdep_off(); -+ *a->errp = notify_change(a->path->dentry, a->ia, ++ *a->errp = notify_change(userns, a->path->dentry, a->ia, + a->delegated_inode); + lockdep_on(); + if (!*a->errp) @@ -33546,6 +33771,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + struct unlink_args *a = args; + struct dentry *d = a->path->dentry; + struct inode *h_inode; ++ struct user_namespace *userns; + const int stop_sillyrename = (au_test_nfs(d->d_sb) + && au_dcount(d) == 1); + @@ -33565,8 +33791,9 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c + ihold(h_inode); + } + ++ userns = mnt_user_ns(a->path->mnt); + lockdep_off(); -+ *a->errp = vfs_unlink(a->dir, d, a->delegated_inode); ++ *a->errp = vfs_unlink(userns, a->dir, d, a->delegated_inode); + lockdep_on(); + if (!*a->errp) { + struct path tmp = { @@ -33613,11 +33840,11 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.c linux/fs/aufs/vfsub.c +} diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h --- /usr/share/empty/fs/aufs/vfsub.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/vfsub.h 2020-01-27 10:57:18.178871751 +0100 -@@ -0,0 +1,354 @@ ++++ linux/fs/aufs/vfsub.h 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,358 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -33701,7 +33928,7 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h +AuStubInt0(vfsub_test_mntns, struct vfsmount *mnt, struct super_block *h_sb); +#endif + -+int vfsub_sync_filesystem(struct super_block *h_sb, int wait); ++int vfsub_sync_filesystem(struct super_block *h_sb); + +/* ---------------------------------------------------------------------- */ + @@ -33720,20 +33947,20 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h +int vfsub_kern_path(const char *name, unsigned int flags, struct path *path); + +struct dentry *vfsub_lookup_one_len_unlocked(const char *name, -+ struct dentry *parent, int len); -+struct dentry *vfsub_lookup_one_len(const char *name, struct dentry *parent, ++ struct path *ppath, int len); ++struct dentry *vfsub_lookup_one_len(const char *name, struct path *ppath, + int len); + +struct vfsub_lkup_one_args { + struct dentry **errp; + struct qstr *name; -+ struct dentry *parent; ++ struct path *ppath; +}; + +static inline struct dentry *vfsub_lkup_one(struct qstr *name, -+ struct dentry *parent) ++ struct path *ppath) +{ -+ return vfsub_lookup_one_len(name->name, parent, name->len); ++ return vfsub_lookup_one_len(name->name, ppath, name->len); +} + +void vfsub_call_lkup_one(void *args); @@ -33846,22 +34073,24 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h +static inline int vfsub_update_time(struct inode *h_inode, + struct timespec64 *ts, int flags) +{ -+ return update_time(h_inode, ts, flags); ++ return inode_update_time(h_inode, ts, flags); + /* no vfsub_update_h_iattr() since we don't have struct path */ +} + +#ifdef CONFIG_FS_POSIX_ACL -+static inline int vfsub_acl_chmod(struct inode *h_inode, umode_t h_mode) ++static inline int vfsub_acl_chmod(struct user_namespace *h_userns, ++ struct inode *h_inode, umode_t h_mode) +{ + int err; + -+ err = posix_acl_chmod(h_inode, h_mode); ++ err = posix_acl_chmod(h_userns, h_inode, h_mode); + if (err == -EOPNOTSUPP) + err = 0; + return err; +} +#else -+AuStubInt0(vfsub_acl_chmod, struct inode *h_inode, umode_t h_mode); ++AuStubInt0(vfsub_acl_chmod, struct user_namespace *h_userns, ++ struct inode *h_inode, umode_t h_mode); +#endif + +long vfsub_splice_to(struct file *in, loff_t *ppos, @@ -33944,24 +34173,26 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h + +/* ---------------------------------------------------------------------- */ + -+static inline int vfsub_setxattr(struct dentry *dentry, const char *name, ++static inline int vfsub_setxattr(struct user_namespace *userns, ++ struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + int err; + + lockdep_off(); -+ err = vfs_setxattr(dentry, name, value, size, flags); ++ err = vfs_setxattr(userns, dentry, name, value, size, flags); + lockdep_on(); + + return err; +} + -+static inline int vfsub_removexattr(struct dentry *dentry, const char *name) ++static inline int vfsub_removexattr(struct user_namespace *userns, ++ struct dentry *dentry, const char *name) +{ + int err; + + lockdep_off(); -+ err = vfs_removexattr(dentry, name); ++ err = vfs_removexattr(userns, dentry, name); + lockdep_on(); + + return err; @@ -33971,11 +34202,11 @@ diff -urN /usr/share/empty/fs/aufs/vfsub.h linux/fs/aufs/vfsub.h +#endif /* __AUFS_VFSUB_H__ */ diff -urN /usr/share/empty/fs/aufs/wbr_policy.c linux/fs/aufs/wbr_policy.c --- /usr/share/empty/fs/aufs/wbr_policy.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/wbr_policy.c 2020-01-27 10:57:18.178871751 +0100 ++++ linux/fs/aufs/wbr_policy.c 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,830 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -34805,11 +35036,11 @@ diff -urN /usr/share/empty/fs/aufs/wbr_policy.c linux/fs/aufs/wbr_policy.c +}; diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c --- /usr/share/empty/fs/aufs/whout.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/whout.c 2020-01-27 10:57:18.178871751 +0100 -@@ -0,0 +1,1062 @@ ++++ linux/fs/aufs/whout.c 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,1072 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -34870,18 +35101,19 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c +/* ---------------------------------------------------------------------- */ + +/* -+ * test if the @wh_name exists under @h_parent. ++ * test if the @wh_name exists under @h_ppath. + * @try_sio specifies the necessary of super-io. + */ -+int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio) ++int au_wh_test(struct user_namespace *h_userns, struct path *h_ppath, ++ struct qstr *wh_name, int try_sio) +{ + int err; + struct dentry *wh_dentry; + + if (!try_sio) -+ wh_dentry = vfsub_lkup_one(wh_name, h_parent); ++ wh_dentry = vfsub_lkup_one(wh_name, h_ppath); + else -+ wh_dentry = au_sio_lkup_one(wh_name, h_parent); ++ wh_dentry = au_sio_lkup_one(h_userns, wh_name, h_ppath); + err = PTR_ERR(wh_dentry); + if (IS_ERR(wh_dentry)) { + if (err == -ENAMETOOLONG) @@ -34908,16 +35140,16 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c +} + +/* -+ * test if the @h_dentry sets opaque or not. ++ * test if the @h_path->dentry sets opaque or not. + */ -+int au_diropq_test(struct dentry *h_dentry) ++int au_diropq_test(struct user_namespace *h_userns, struct path *h_path) +{ + int err; + struct inode *h_dir; + -+ h_dir = d_inode(h_dentry); -+ err = au_wh_test(h_dentry, &diropq_name, -+ au_test_h_perm_sio(h_dir, MAY_EXEC)); ++ h_dir = d_inode(h_path->dentry); ++ err = au_wh_test(h_userns, h_path, &diropq_name, ++ au_test_h_perm_sio(h_userns, h_dir, MAY_EXEC)); + return err; +} + @@ -34934,6 +35166,8 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + /* strict atomic_t is unnecessary here */ + static unsigned short cnt; + struct qstr qs; ++ struct path h_ppath; ++ struct user_namespace *h_userns; + + BUILD_BUG_ON(sizeof(cnt) * 2 > AUFS_WH_TMP_LEN); + @@ -34957,10 +35191,13 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + *p++ = '.'; + AuDebugOn(name + qs.len + 1 - p <= AUFS_WH_TMP_LEN); + ++ h_ppath.dentry = h_parent; ++ h_ppath.mnt = au_br_mnt(br); ++ h_userns = au_br_userns(br); + qs.name = name; + for (i = 0; i < 3; i++) { + sprintf(p, "%.*x", AUFS_WH_TMP_LEN, cnt++); -+ dentry = au_sio_lkup_one(&qs, h_parent); ++ dentry = au_sio_lkup_one(h_userns, &qs, &h_ppath); + if (IS_ERR(dentry) || d_is_negative(dentry)) + goto out_name; + dput(dentry); @@ -35054,21 +35291,20 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + return err; +} + -+static int unlink_wh_name(struct dentry *h_parent, struct qstr *wh, -+ struct au_branch *br) ++static int unlink_wh_name(struct path *h_ppath, struct qstr *wh) +{ + int err; -+ struct path h_path = { -+ .mnt = au_br_mnt(br) -+ }; ++ struct path h_path; + + err = 0; -+ h_path.dentry = vfsub_lkup_one(wh, h_parent); ++ h_path.dentry = vfsub_lkup_one(wh, h_ppath); + if (IS_ERR(h_path.dentry)) + err = PTR_ERR(h_path.dentry); + else { -+ if (d_is_reg(h_path.dentry)) -+ err = do_unlink_wh(d_inode(h_parent), &h_path); ++ if (d_is_reg(h_path.dentry)) { ++ h_path.mnt = h_ppath->mnt; ++ err = do_unlink_wh(d_inode(h_ppath->dentry), &h_path); ++ } + dput(h_path.dentry); + } + @@ -35508,15 +35744,17 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c +static struct dentry *do_diropq(struct dentry *dentry, aufs_bindex_t bindex, + unsigned int flags) +{ -+ struct dentry *opq_dentry, *h_dentry; ++ struct dentry *opq_dentry; + struct super_block *sb; + struct au_branch *br; ++ struct path h_path; + int err; + + sb = dentry->d_sb; + br = au_sbr(sb, bindex); -+ h_dentry = au_h_dptr(dentry, bindex); -+ opq_dentry = vfsub_lkup_one(&diropq_name, h_dentry); ++ h_path.dentry = au_h_dptr(dentry, bindex); ++ h_path.mnt = au_br_mnt(br); ++ opq_dentry = vfsub_lkup_one(&diropq_name, &h_path); + if (IS_ERR(opq_dentry)) + goto out; + @@ -35527,11 +35765,8 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + goto out; /* success */ + } + } else { -+ struct path tmp = { -+ .dentry = opq_dentry, -+ .mnt = au_br_mnt(br) -+ }; -+ err = do_unlink_wh(au_h_iptr(d_inode(dentry), bindex), &tmp); ++ h_path.dentry = opq_dentry; ++ err = do_unlink_wh(au_h_iptr(d_inode(dentry), bindex), &h_path); + if (!err) + au_set_dbdiropq(dentry, -1); + } @@ -35559,9 +35794,12 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + unsigned int flags) +{ + struct dentry *diropq, *h_dentry; ++ struct user_namespace *h_userns; + ++ h_userns = au_sbr_userns(dentry->d_sb, bindex); + h_dentry = au_h_dptr(dentry, bindex); -+ if (!au_test_h_perm_sio(d_inode(h_dentry), MAY_EXEC | MAY_WRITE)) ++ if (!au_test_h_perm_sio(h_userns, d_inode(h_dentry), ++ MAY_EXEC | MAY_WRITE)) + diropq = do_diropq(dentry, bindex, flags); + else { + int wkq_err; @@ -35594,11 +35832,14 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + int err; + struct qstr wh_name; + struct dentry *wh_dentry; ++ struct path h_path; + + err = au_wh_name_alloc(&wh_name, base_name); + wh_dentry = ERR_PTR(err); + if (!err) { -+ wh_dentry = vfsub_lkup_one(&wh_name, h_parent); ++ h_path.dentry = h_parent; ++ h_path.mnt = au_br_mnt(br); ++ wh_dentry = vfsub_lkup_one(&wh_name, &h_path); + au_kfree_try_rcu(wh_name.name); + } + return wh_dentry; @@ -35633,8 +35874,8 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c +/* ---------------------------------------------------------------------- */ + +/* Delete all whiteouts in this directory on branch bindex. */ -+static int del_wh_children(struct dentry *h_dentry, struct au_nhash *whlist, -+ aufs_bindex_t bindex, struct au_branch *br) ++static int del_wh_children(struct path *h_path, struct au_nhash *whlist, ++ aufs_bindex_t bindex) +{ + int err; + unsigned long ul, n; @@ -35664,7 +35905,7 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + if (str->len + AUFS_WH_PFX_LEN <= PATH_MAX) { + memcpy(p, str->name, str->len); + wh_name.len = AUFS_WH_PFX_LEN + str->len; -+ err = unlink_wh_name(h_dentry, &wh_name, br); ++ err = unlink_wh_name(h_path, &wh_name); + if (!err) + continue; + break; @@ -35683,16 +35924,15 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + +struct del_wh_children_args { + int *errp; -+ struct dentry *h_dentry; ++ struct path *h_path; + struct au_nhash *whlist; + aufs_bindex_t bindex; -+ struct au_branch *br; +}; + +static void call_del_wh_children(void *args) +{ + struct del_wh_children_args *a = args; -+ *a->errp = del_wh_children(a->h_dentry, a->whlist, a->bindex, a->br); ++ *a->errp = del_wh_children(a->h_path, a->whlist, a->bindex); +} + +/* ---------------------------------------------------------------------- */ @@ -35744,14 +35984,18 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c +{ + int err; + unsigned int h_nlink; -+ struct path h_tmp; ++ struct path wh_path; + struct inode *wh_inode, *h_dir; + struct au_branch *br; ++ struct user_namespace *h_userns; + + h_dir = d_inode(wh_dentry->d_parent); /* dir inode is locked */ + IMustLock(h_dir); + + br = au_sbr(dir->i_sb, bindex); ++ wh_path.dentry = wh_dentry; ++ wh_path.mnt = au_br_mnt(br); ++ h_userns = au_br_userns(br); + wh_inode = d_inode(wh_dentry); + inode_lock_nested(wh_inode, AuLsc_I_CHILD); + @@ -35759,16 +36003,15 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + * someone else might change some whiteouts while we were sleeping. + * it means this whlist may have an obsoleted entry. + */ -+ if (!au_test_h_perm_sio(wh_inode, MAY_EXEC | MAY_WRITE)) -+ err = del_wh_children(wh_dentry, whlist, bindex, br); ++ if (!au_test_h_perm_sio(h_userns, wh_inode, MAY_EXEC | MAY_WRITE)) ++ err = del_wh_children(&wh_path, whlist, bindex); + else { + int wkq_err; + struct del_wh_children_args args = { + .errp = &err, -+ .h_dentry = wh_dentry, ++ .h_path = &wh_path, + .whlist = whlist, -+ .bindex = bindex, -+ .br = br ++ .bindex = bindex + }; + + wkq_err = au_wkq_wait(call_del_wh_children, &args); @@ -35778,10 +36021,8 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c + inode_unlock(wh_inode); + + if (!err) { -+ h_tmp.dentry = wh_dentry; -+ h_tmp.mnt = au_br_mnt(br); + h_nlink = h_dir->i_nlink; -+ err = vfsub_rmdir(h_dir, &h_tmp); ++ err = vfsub_rmdir(h_dir, &wh_path); + /* some fs doesn't change the parent nlink in some cases */ + h_nlink -= h_dir->i_nlink; + } @@ -35871,11 +36112,11 @@ diff -urN /usr/share/empty/fs/aufs/whout.c linux/fs/aufs/whout.c +} diff -urN /usr/share/empty/fs/aufs/whout.h linux/fs/aufs/whout.h --- /usr/share/empty/fs/aufs/whout.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/whout.h 2020-01-27 10:57:18.178871751 +0100 -@@ -0,0 +1,86 @@ ++++ linux/fs/aufs/whout.h 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,87 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -35904,8 +36145,9 @@ diff -urN /usr/share/empty/fs/aufs/whout.h linux/fs/aufs/whout.h + +/* whout.c */ +int au_wh_name_alloc(struct qstr *wh, const struct qstr *name); -+int au_wh_test(struct dentry *h_parent, struct qstr *wh_name, int try_sio); -+int au_diropq_test(struct dentry *h_dentry); ++int au_wh_test(struct user_namespace *h_userns, struct path *h_ppath, ++ struct qstr *wh_name, int try_sio); ++int au_diropq_test(struct user_namespace *h_userns, struct path *h_path); +struct au_branch; +struct dentry *au_whtmp_lkup(struct dentry *h_parent, struct au_branch *br, + struct qstr *prefix); @@ -35961,11 +36203,11 @@ diff -urN /usr/share/empty/fs/aufs/whout.h linux/fs/aufs/whout.h +#endif /* __AUFS_WHOUT_H__ */ diff -urN /usr/share/empty/fs/aufs/wkq.c linux/fs/aufs/wkq.c --- /usr/share/empty/fs/aufs/wkq.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/wkq.c 2020-08-03 09:12:33.764880472 +0200 ++++ linux/fs/aufs/wkq.c 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,372 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -36337,11 +36579,11 @@ diff -urN /usr/share/empty/fs/aufs/wkq.c linux/fs/aufs/wkq.c +} diff -urN /usr/share/empty/fs/aufs/wkq.h linux/fs/aufs/wkq.h --- /usr/share/empty/fs/aufs/wkq.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/wkq.h 2020-01-27 10:57:18.182205184 +0100 ++++ linux/fs/aufs/wkq.h 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,89 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -36430,11 +36672,11 @@ diff -urN /usr/share/empty/fs/aufs/wkq.h linux/fs/aufs/wkq.h +#endif /* __AUFS_WKQ_H__ */ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c --- /usr/share/empty/fs/aufs/xattr.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/xattr.c 2020-08-03 09:14:46.095748745 +0200 -@@ -0,0 +1,356 @@ ++++ linux/fs/aufs/xattr.c 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,368 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2014-2020 Junjiro R. Okajima ++ * Copyright (C) 2014-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -36498,21 +36740,26 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c + +static const int au_xattr_out_of_list = AuBrAttr_ICEX_OTH << 1; + -+static int au_do_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, ++static int au_do_cpup_xattr(struct path *h_dst, struct path *h_src, + char *name, char **buf, unsigned int ignore_flags, + unsigned int verbose) +{ + int err; + ssize_t ssz; + struct inode *h_idst; ++ struct dentry *h_dst_dentry, *h_src_dentry; ++ struct user_namespace *h_dst_userns, *h_src_userns; + -+ ssz = vfs_getxattr_alloc(h_src, name, buf, 0, GFP_NOFS); ++ h_src_userns = mnt_user_ns(h_src->mnt); ++ h_src_dentry = h_src->dentry; ++ ssz = vfs_getxattr_alloc(h_src_userns, h_src_dentry, name, buf, 0, ++ GFP_NOFS); + err = ssz; + if (unlikely(err <= 0)) { + if (err == -ENODATA + || (err == -EOPNOTSUPP + && ((ignore_flags & au_xattr_out_of_list) -+ || (au_test_nfs_noacl(d_inode(h_src)) ++ || (au_test_nfs_noacl(d_inode(h_src_dentry)) + && (!strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS) + || !strcmp(name, + XATTR_NAME_POSIX_ACL_DEFAULT)))) @@ -36524,9 +36771,12 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c + } + + /* unlock it temporary */ -+ h_idst = d_inode(h_dst); ++ h_dst_userns = mnt_user_ns(h_dst->mnt); ++ h_dst_dentry = h_dst->dentry; ++ h_idst = d_inode(h_dst_dentry); + inode_unlock(h_idst); -+ err = vfsub_setxattr(h_dst, name, *buf, ssz, /*flags*/0); ++ err = vfsub_setxattr(h_dst_userns, h_dst_dentry, name, *buf, ssz, ++ /*flags*/0); + inode_lock_nested(h_idst, AuLsc_I_CHILD2); + if (unlikely(err)) { + if (verbose || au_debug_test()) @@ -36538,25 +36788,28 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c + return err; +} + -+int au_cpup_xattr(struct dentry *h_dst, struct dentry *h_src, int ignore_flags, ++int au_cpup_xattr(struct path *h_dst, struct path *h_src, int ignore_flags, + unsigned int verbose) +{ + int err, unlocked, acl_access, acl_default; + ssize_t ssz; ++ struct dentry *h_dst_dentry, *h_src_dentry; + struct inode *h_isrc, *h_idst; + char *value, *p, *o, *e; + + /* try stopping to update the source inode while we are referencing */ + /* there should not be the parent-child relationship between them */ -+ h_isrc = d_inode(h_src); -+ h_idst = d_inode(h_dst); ++ h_dst_dentry = h_dst->dentry; ++ h_idst = d_inode(h_dst_dentry); ++ h_src_dentry = h_src->dentry; ++ h_isrc = d_inode(h_src_dentry); + inode_unlock(h_idst); + inode_lock_shared_nested(h_isrc, AuLsc_I_CHILD); + inode_lock_nested(h_idst, AuLsc_I_CHILD2); + unlocked = 0; + + /* some filesystems don't list POSIX ACL, for example tmpfs */ -+ ssz = vfs_listxattr(h_src, NULL, 0); ++ ssz = vfs_listxattr(h_src_dentry, NULL, 0); + err = ssz; + if (unlikely(err < 0)) { + AuTraceErr(err); @@ -36575,7 +36828,7 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c + o = p; + if (unlikely(!p)) + goto out; -+ err = vfs_listxattr(h_src, p, ssz); ++ err = vfs_listxattr(h_src_dentry, p, ssz); + } + inode_unlock_shared(h_isrc); + unlocked = 1; @@ -36689,7 +36942,7 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c + break; + case AU_XATTR_GET: + AuDebugOn(d_is_negative(h_path.dentry)); -+ err = vfs_getxattr(h_path.dentry, ++ err = vfs_getxattr(mnt_user_ns(h_path.mnt), h_path.dentry, + arg->u.get.name, arg->u.get.value, + arg->u.get.size); + break; @@ -36761,6 +37014,7 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c +} + +static int au_xattr_set(const struct xattr_handler *handler, ++ struct user_namespace *userns, + struct dentry *dentry, struct inode *inode, + const char *name, const void *value, size_t size, + int flags) @@ -36790,11 +37044,11 @@ diff -urN /usr/share/empty/fs/aufs/xattr.c linux/fs/aufs/xattr.c +} diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c --- /usr/share/empty/fs/aufs/xino.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux/fs/aufs/xino.c 2020-04-03 08:16:49.834195677 +0200 -@@ -0,0 +1,1966 @@ ++++ linux/fs/aufs/xino.c 2022-08-02 12:12:45.168975258 +0200 +@@ -0,0 +1,1926 @@ +// SPDX-License-Identifier: GPL-2.0 +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -37003,7 +37257,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + } + + err = -EINVAL; -+ if (unlikely(sb == d->d_sb)) { ++ if (unlikely(sb && sb == d->d_sb)) { + if (!silent) + pr_err("%s must be outside\n", fpath); + goto out; @@ -37029,22 +37283,23 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + struct file *copy_src) +{ + struct file *file; -+ struct dentry *dentry, *parent; ++ struct dentry *dentry; + struct inode *dir, *delegated; + struct qstr *name; -+ struct path path; ++ struct path ppath, path; + int err, do_unlock; + struct au_xino_lock_dir ldir; + + do_unlock = 1; + au_xino_lock_dir(sb, base, &ldir); + dentry = base->dentry; -+ parent = dentry->d_parent; /* dir inode is locked */ -+ dir = d_inode(parent); ++ ppath.dentry = dentry->d_parent; /* dir inode is locked */ ++ ppath.mnt = base->mnt; ++ dir = d_inode(ppath.dentry); + IMustLock(dir); + + name = &dentry->d_name; -+ path.dentry = vfsub_lookup_one_len(name->name, parent, name->len); ++ path.dentry = vfsub_lookup_one_len(name->name, &ppath, name->len); + if (IS_ERR(path.dentry)) { + file = (void *)path.dentry; + pr_err("%pd lookup err %ld\n", dentry, PTR_ERR(path.dentry)); @@ -37052,7 +37307,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + } + + /* no need to mnt_want_write() since we call dentry_open() later */ -+ err = vfs_create(dir, path.dentry, 0666, NULL); ++ err = vfs_create(mnt_user_ns(base->mnt), dir, path.dentry, 0666, NULL); + if (unlikely(err)) { + file = ERR_PTR(err); + pr_err("%pd create err %d\n", dentry, err); @@ -37454,8 +37709,8 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + ino_t h_ino, ino; +}; + -+static int au_xino_do_write(vfs_writef_t write, struct file *file, -+ struct au_xi_calc *calc, ino_t ino); ++static int au_xino_do_write(struct file *file, struct au_xi_calc *calc, ++ ino_t ino); + +static void au_xino_call_do_new_async(void *args) +{ @@ -37484,7 +37739,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + + file = au_xino_file(br->br_xino, a->calc.idx); + AuDebugOn(!file); -+ err = au_xino_do_write(sbi->si_xwrite, file, &a->calc, a->ino); ++ err = au_xino_do_write(file, &a->calc, a->ino); + if (unlikely(err)) { + AuIOErr("err %d\n", err); + goto out; @@ -37585,7 +37840,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + return 0; /* no xino */ + + sbinfo = au_sbi(sb); -+ sz = xino_fread(sbinfo->si_xread, file, ino, sizeof(*ino), &calc.pos); ++ sz = xino_fread(file, ino, sizeof(*ino), &calc.pos); + if (sz == sizeof(*ino)) + return 0; /* success */ + @@ -37597,12 +37852,12 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + return err; +} + -+static int au_xino_do_write(vfs_writef_t write, struct file *file, -+ struct au_xi_calc *calc, ino_t ino) ++static int au_xino_do_write(struct file *file, struct au_xi_calc *calc, ++ ino_t ino) +{ + ssize_t sz; + -+ sz = xino_fwrite(write, file, &ino, sizeof(ino), &calc->pos); ++ sz = xino_fwrite(file, &ino, sizeof(ino), &calc->pos); + if (sz == sizeof(ino)) + return 0; /* success */ + @@ -37652,7 +37907,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + goto out; + } + -+ err = au_xino_do_write(au_sbi(sb)->si_xwrite, file, &calc, ino); ++ err = au_xino_do_write(file, &calc, ino); + if (!err) { + br = au_sbr(sb, bindex); + if (au_opt_test(mnt_flags, TRUNC_XINO) @@ -37666,40 +37921,27 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + return -EIO; +} + -+static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf, -+ size_t size, loff_t *pos); ++static ssize_t xino_fread_wkq(struct file *file, void *buf, size_t size, ++ loff_t *pos); + +/* todo: unnecessary to support mmap_sem since kernel-space? */ -+ssize_t xino_fread(vfs_readf_t func, struct file *file, void *kbuf, size_t size, -+ loff_t *pos) ++ssize_t xino_fread(struct file *file, void *kbuf, size_t size, loff_t *pos) +{ + ssize_t err; -+ mm_segment_t oldfs; -+ union { -+ void *k; -+ char __user *u; -+ } buf; + int i; + const int prevent_endless = 10; + + i = 0; -+ buf.k = kbuf; -+ oldfs = get_fs(); -+ set_fs(KERNEL_DS); + do { -+ err = func(file, buf.u, size, pos); ++ err = vfsub_read_k(file, kbuf, size, pos); + if (err == -EINTR + && !au_wkq_test() + && fatal_signal_pending(current)) { -+ set_fs(oldfs); -+ err = xino_fread_wkq(func, file, kbuf, size, pos); ++ err = xino_fread_wkq(file, kbuf, size, pos); + BUG_ON(err == -EINTR); -+ oldfs = get_fs(); -+ set_fs(KERNEL_DS); + } + } while (i++ < prevent_endless + && (err == -EAGAIN || err == -EINTR)); -+ set_fs(oldfs); + +#if 0 /* reserved for future use */ + if (err > 0) @@ -37711,7 +37953,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + +struct xino_fread_args { + ssize_t *errp; -+ vfs_readf_t func; + struct file *file; + void *buf; + size_t size; @@ -37721,17 +37962,16 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c +static void call_xino_fread(void *args) +{ + struct xino_fread_args *a = args; -+ *a->errp = xino_fread(a->func, a->file, a->buf, a->size, a->pos); ++ *a->errp = xino_fread(a->file, a->buf, a->size, a->pos); +} + -+static ssize_t xino_fread_wkq(vfs_readf_t func, struct file *file, void *buf, -+ size_t size, loff_t *pos) ++static ssize_t xino_fread_wkq(struct file *file, void *buf, size_t size, ++ loff_t *pos) +{ + ssize_t err; + int wkq_err; + struct xino_fread_args args = { + .errp = &err, -+ .func = func, + .file = file, + .buf = buf, + .size = size, @@ -37745,39 +37985,27 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + return err; +} + -+static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf, -+ size_t size, loff_t *pos); ++static ssize_t xino_fwrite_wkq(struct file *file, void *buf, size_t size, ++ loff_t *pos); + -+static ssize_t do_xino_fwrite(vfs_writef_t func, struct file *file, void *kbuf, -+ size_t size, loff_t *pos) ++static ssize_t do_xino_fwrite(struct file *file, void *kbuf, size_t size, ++ loff_t *pos) +{ + ssize_t err; -+ mm_segment_t oldfs; -+ union { -+ void *k; -+ const char __user *u; -+ } buf; + int i; + const int prevent_endless = 10; + + i = 0; -+ buf.k = kbuf; -+ oldfs = get_fs(); -+ set_fs(KERNEL_DS); + do { -+ err = func(file, buf.u, size, pos); ++ err = vfsub_write_k(file, kbuf, size, pos); + if (err == -EINTR + && !au_wkq_test() + && fatal_signal_pending(current)) { -+ set_fs(oldfs); -+ err = xino_fwrite_wkq(func, file, kbuf, size, pos); ++ err = xino_fwrite_wkq(file, kbuf, size, pos); + BUG_ON(err == -EINTR); -+ oldfs = get_fs(); -+ set_fs(KERNEL_DS); + } + } while (i++ < prevent_endless + && (err == -EAGAIN || err == -EINTR)); -+ set_fs(oldfs); + +#if 0 /* reserved for future use */ + if (err > 0) @@ -37789,7 +38017,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + +struct do_xino_fwrite_args { + ssize_t *errp; -+ vfs_writef_t func; + struct file *file; + void *buf; + size_t size; @@ -37799,17 +38026,16 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c +static void call_do_xino_fwrite(void *args) +{ + struct do_xino_fwrite_args *a = args; -+ *a->errp = do_xino_fwrite(a->func, a->file, a->buf, a->size, a->pos); ++ *a->errp = do_xino_fwrite(a->file, a->buf, a->size, a->pos); +} + -+static ssize_t xino_fwrite_wkq(vfs_writef_t func, struct file *file, void *buf, -+ size_t size, loff_t *pos) ++static ssize_t xino_fwrite_wkq(struct file *file, void *buf, size_t size, ++ loff_t *pos) +{ + ssize_t err; + int wkq_err; + struct do_xino_fwrite_args args = { + .errp = &err, -+ .func = func, + .file = file, + .buf = buf, + .size = size, @@ -37827,18 +38053,17 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + return err; +} + -+ssize_t xino_fwrite(vfs_writef_t func, struct file *file, void *buf, -+ size_t size, loff_t *pos) ++ssize_t xino_fwrite(struct file *file, void *buf, size_t size, loff_t *pos) +{ + ssize_t err; + + if (rlimit(RLIMIT_FSIZE) == RLIM_INFINITY) { + lockdep_off(); -+ err = do_xino_fwrite(func, file, buf, size, pos); ++ err = do_xino_fwrite(file, buf, size, pos); + lockdep_on(); + } else { + lockdep_off(); -+ err = xino_fwrite_wkq(func, file, buf, size, pos); ++ err = xino_fwrite_wkq(file, buf, size, pos); + lockdep_on(); + } + @@ -37889,17 +38114,17 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + p = sbinfo->si_xib_buf; + pos = sbinfo->si_xib_last_pindex; + pos *= PAGE_SIZE; -+ sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos); ++ sz = xino_fwrite(xib, p, PAGE_SIZE, &pos); + if (unlikely(sz != PAGE_SIZE)) + goto out; + + pos = pindex; + pos *= PAGE_SIZE; + if (vfsub_f_size_read(xib) >= pos + PAGE_SIZE) -+ sz = xino_fread(sbinfo->si_xread, xib, p, PAGE_SIZE, &pos); ++ sz = xino_fread(xib, p, PAGE_SIZE, &pos); + else { + memset(p, 0, PAGE_SIZE); -+ sz = xino_fwrite(sbinfo->si_xwrite, xib, p, PAGE_SIZE, &pos); ++ sz = xino_fwrite(xib, p, PAGE_SIZE, &pos); + } + if (sz == PAGE_SIZE) { + sbinfo->si_xib_last_pindex = pindex; @@ -37950,7 +38175,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + unsigned long pindex; + loff_t pos, pend; + struct au_sbinfo *sbinfo; -+ vfs_readf_t func; + ino_t *ino; + unsigned long *p; + @@ -37958,11 +38182,10 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + sbinfo = au_sbi(sb); + MtxMustLock(&sbinfo->si_xib_mtx); + p = sbinfo->si_xib_buf; -+ func = sbinfo->si_xread; + pend = vfsub_f_size_read(file); + pos = 0; + while (pos < pend) { -+ sz = xino_fread(func, file, page, PAGE_SIZE, &pos); ++ sz = xino_fread(file, page, PAGE_SIZE, &pos); + err = sz; + if (unlikely(sz <= 0)) + goto out; @@ -38051,7 +38274,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + p = sbinfo->si_xib_buf; + memset(p, 0, PAGE_SIZE); + pos = 0; -+ sz = xino_fwrite(sbinfo->si_xwrite, sbinfo->si_xib, p, PAGE_SIZE, &pos); ++ sz = xino_fwrite(sbinfo->si_xib, p, PAGE_SIZE, &pos); + if (unlikely(sz != PAGE_SIZE)) { + err = sz; + AuIOErr("err %d\n", err); @@ -38190,7 +38413,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + SiMustWriteLock(sb); + + sbinfo = au_sbi(sb); -+ /* unnecessary to clear sbinfo->si_xread and ->si_xwrite */ + if (sbinfo->si_xib) + fput(sbinfo->si_xib); + sbinfo->si_xib = NULL; @@ -38217,8 +38439,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + if (sbinfo->si_xib) + fput(sbinfo->si_xib); + sbinfo->si_xib = file; -+ sbinfo->si_xread = vfs_readf(file); -+ sbinfo->si_xwrite = vfs_writef(file); + xi_sb = file_inode(file)->i_sb; + sbinfo->si_ximaxent = xi_sb->s_maxbytes; + if (unlikely(sbinfo->si_ximaxent < PAGE_SIZE)) { @@ -38239,8 +38459,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + sbinfo->si_xib_next_bit = 0; + if (vfsub_f_size_read(file) < PAGE_SIZE) { + pos = 0; -+ err = xino_fwrite(sbinfo->si_xwrite, file, sbinfo->si_xib_buf, -+ PAGE_SIZE, &pos); ++ err = xino_fwrite(file, sbinfo->si_xib_buf, PAGE_SIZE, &pos); + if (unlikely(err != PAGE_SIZE)) + goto out_free; + } @@ -38291,7 +38510,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c +} + +struct au_xino_do_set_br { -+ vfs_writef_t writef; + struct au_branch *br; + ino_t h_ino; + aufs_bindex_t bshared; @@ -38333,7 +38551,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + goto out; + AuDebugOn(!file); + -+ err = au_xino_do_write(args->writef, file, &calc, AUFS_ROOT_INO); ++ err = au_xino_do_write(file, &calc, AUFS_ROOT_INO); + if (unlikely(err)) + au_xino_put(br); + @@ -38353,7 +38571,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + + bbot = au_sbbot(sb); + inode = d_inode(sb->s_root); -+ args.writef = au_sbi(sb)->si_xwrite; + for (bindex = 0; bindex <= bbot; bindex++) { + args.h_ino = au_h_iptr(inode, bindex)->i_ino; + args.br = au_sbr(sb, bindex); @@ -38508,7 +38725,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + .br = br + }; + -+ args.writef = au_sbi(sb)->si_xwrite; + args.bshared = sbr_find_shared(sb, /*btop*/0, au_sbbot(sb), + au_br_sb(br)); + err = au_xino_do_set_br(sb, base, &args); @@ -38592,7 +38808,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + struct au_hinode *hi; + struct inode *h_inode; + struct au_branch *br; -+ vfs_writef_t xwrite; + struct au_xi_calc calc; + struct file *file; + @@ -38614,7 +38829,6 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + if (bindex < 0) + return; + -+ xwrite = au_sbi(sb)->si_xwrite; + try_trunc = !!au_opt_test(mnt_flags, TRUNC_XINO); + hi = au_hinode(iinfo, bindex); + bbot = iinfo->ii_bbot; @@ -38635,7 +38849,7 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c + if (IS_ERR_OR_NULL(file)) + continue; + -+ err = au_xino_do_write(xwrite, file, &calc, /*ino*/0); ++ err = au_xino_do_write(file, &calc, /*ino*/0); + if (!err && try_trunc + && au_test_fs_trunc_xino(au_br_sb(br))) + xino_try_trunc(sb, br); @@ -38760,11 +38974,11 @@ diff -urN /usr/share/empty/fs/aufs/xino.c linux/fs/aufs/xino.c +} diff -urN /usr/share/empty/include/uapi/linux/aufs_type.h linux/include/uapi/linux/aufs_type.h --- /usr/share/empty/include/uapi/linux/aufs_type.h 1970-01-01 01:00:00.000000000 +0100 -+++ linux/include/uapi/linux/aufs_type.h 2020-08-03 09:14:46.095748745 +0200 ++++ linux/include/uapi/linux/aufs_type.h 2022-08-02 12:12:45.168975258 +0200 @@ -0,0 +1,452 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* -+ * Copyright (C) 2005-2020 Junjiro R. Okajima ++ * Copyright (C) 2005-2021 Junjiro R. Okajima + * + * This program, aufs is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -38804,7 +39018,7 @@ diff -urN /usr/share/empty/include/uapi/linux/aufs_type.h linux/include/uapi/lin +#include +#endif /* __KERNEL__ */ + -+#define AUFS_VERSION "5.x-rcN-20200622" ++#define AUFS_VERSION "5.x-rcN-20220711" + +/* todo? move this to linux-2.6.19/include/magic.h */ +#define AUFS_SUPER_MAGIC ('a' << 24 | 'u' << 16 | 'f' << 8 | 's') @@ -39218,11 +39432,20 @@ SPDX-License-Identifier: GPL-2.0 aufs5.x-rcN loopback patch diff --git a/drivers/block/loop.c b/drivers/block/loop.c -index 0479902a0cd50..758c8ee4d4e6b 100644 +index a705173cf452..642a93f4fdee 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c -@@ -638,6 +638,15 @@ static inline void loop_update_dio(struct loop_device *lo) - lo->use_dio); +@@ -54,7 +54,7 @@ struct loop_device { + int lo_flags; + char lo_file_name[LO_NAME_SIZE]; + +- struct file * lo_backing_file; ++ struct file *lo_backing_file, *lo_backing_virt_file; + struct block_device *lo_device; + + gfp_t old_gfp_mask; +@@ -510,6 +510,15 @@ static inline void loop_update_dio(struct loop_device *lo) + lo->use_dio); } +static struct file *loop_real_file(struct file *file) @@ -39234,28 +39457,28 @@ index 0479902a0cd50..758c8ee4d4e6b 100644 + return f; +} + - static void loop_reread_partitions(struct loop_device *lo, - struct block_device *bdev) + static void loop_reread_partitions(struct loop_device *lo) { -@@ -693,6 +702,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, - unsigned int arg) + int rc; +@@ -567,6 +576,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, { - struct file *file = NULL, *old_file; -+ struct file *f, *virt_file = NULL, *old_virt_file; - int error; - bool partscan; - -@@ -712,12 +722,19 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, - file = fget(arg); - if (!file) + struct file *file = fget(arg); + struct file *old_file; ++ struct file *f, *virt_file = NULL, *old_virt_file; + int error; + bool partscan; + bool is_loop; +@@ -590,11 +600,19 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, + if (!(lo->lo_flags & LO_FLAGS_READ_ONLY)) goto out_err; + + f = loop_real_file(file); + if (f) { + virt_file = file; + file = f; + get_file(file); + } - ++ error = loop_validate_file(file, bdev); if (error) goto out_err; @@ -39265,7 +39488,7 @@ index 0479902a0cd50..758c8ee4d4e6b 100644 error = -EINVAL; -@@ -729,6 +746,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, +@@ -607,6 +625,7 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, blk_mq_freeze_queue(lo->lo_queue); mapping_set_gfp_mask(old_file->f_mapping, lo->old_gfp_mask); lo->lo_backing_file = file; @@ -39273,47 +39496,47 @@ index 0479902a0cd50..758c8ee4d4e6b 100644 lo->old_gfp_mask = mapping_gfp_mask(file->f_mapping); mapping_set_gfp_mask(file->f_mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS)); -@@ -742,6 +760,8 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, +@@ -629,6 +648,8 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, * dependency. */ fput(old_file); + if (old_virt_file) + fput(old_virt_file); if (partscan) - loop_reread_partitions(lo, bdev); - return 0; -@@ -750,6 +770,8 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, - mutex_unlock(&loop_ctl_mutex); - if (file) - fput(file); + loop_reread_partitions(lo); + +@@ -642,6 +663,8 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, + loop_global_unlock(lo, is_loop); + out_putf: + fput(file); + if (virt_file) + fput(virt_file); - return error; + goto done; } -@@ -973,7 +995,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode - struct block_device *bdev, +@@ -1008,6 +1031,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode, const struct loop_config *config) { -- struct file *file; -+ struct file *file, *f, *virt_file = NULL; - struct inode *inode; + struct file *file = fget(config->fd); ++ struct file *f, *virt_file = NULL; + struct inode *inode; struct address_space *mapping; - struct block_device *claimed_bdev = NULL; -@@ -989,6 +1011,12 @@ static int loop_configure(struct loop_device *lo, fmode_t mode, - file = fget(arg); - if (!file) - goto out; + int error; +@@ -1026,6 +1050,13 @@ static int loop_configure(struct loop_device *lo, fmode_t mode, + /* suppress uevents while reconfiguring the device */ + dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 1); + + f = loop_real_file(file); + if (f) { + virt_file = file; + file = f; + get_file(file); + } - ++ /* * If we don't hold exclusive handle for the device, upgrade to it -@@ -1037,6 +1065,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode + * here to avoid changing device under exclusive owner. +@@ -1086,6 +1117,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode, lo->use_dio = lo->lo_flags & LO_FLAGS_DIRECT_IO; lo->lo_device = bdev; lo->lo_backing_file = file; @@ -39321,58 +39544,45 @@ index 0479902a0cd50..758c8ee4d4e6b 100644 lo->old_gfp_mask = mapping_gfp_mask(mapping); mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS)); -@@ -1090,6 +1119,8 @@ static int loop_configure(struct loop_device *lo, fmode_t mode - bd_abort_claiming(bdev, claimed_bdev, loop_set_fd); +@@ -1141,6 +1173,8 @@ static int loop_configure(struct loop_device *lo, fmode_t mode, + bd_abort_claiming(bdev, loop_configure); out_putf: fput(file); + if (virt_file) + fput(virt_file); - out: /* This is safe: open() is still holding a reference. */ module_put(THIS_MODULE); -@@ -1136,6 +1167,7 @@ loop_init_xfer(struct loop_device *lo, struct loop_func_table *xfer, - static int __loop_clr_fd(struct loop_device *lo, bool release) + goto done; +@@ -1149,6 +1183,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode, + static void __loop_clr_fd(struct loop_device *lo, bool release) { - struct file *filp = NULL; + struct file *filp; + struct file *virt_filp = lo->lo_backing_virt_file; gfp_t gfp = lo->old_gfp_mask; - struct block_device *bdev = lo->lo_device; - int err = 0; -@@ -1159,6 +1191,7 @@ static int __loop_clr_fd(struct loop_device *lo, bool release) + if (test_bit(QUEUE_FLAG_WC, &lo->lo_queue->queue_flags)) +@@ -1165,6 +1200,7 @@ static void __loop_clr_fd(struct loop_device *lo, bool release) spin_lock_irq(&lo->lo_lock); + filp = lo->lo_backing_file; lo->lo_backing_file = NULL; + lo->lo_backing_virt_file = NULL; spin_unlock_irq(&lo->lo_lock); - loop_release_xfer(lo); -@@ -1242,6 +1275,8 @@ static int __loop_clr_fd(struct loop_device *lo, bool release) + lo->lo_device = NULL; +@@ -1227,6 +1263,8 @@ static void __loop_clr_fd(struct loop_device *lo, bool release) + * fput can take open_mutex which is usually taken before lo_mutex. */ - if (filp) - fput(filp); + fput(filp); + if (virt_filp) + fput(virt_filp); - return err; } -diff --git a/drivers/block/loop.h b/drivers/block/loop.h -index af75a5ee40944..1d847cb194ff6 100644 ---- a/drivers/block/loop.h -+++ b/drivers/block/loop.h -@@ -46,7 +46,7 @@ struct loop_device { - int (*ioctl)(struct loop_device *, int cmd, - unsigned long arg); - -- struct file * lo_backing_file; -+ struct file *lo_backing_file, *lo_backing_virt_file; - struct block_device *lo_device; - void *key_data; - + static int loop_clr_fd(struct loop_device *lo) diff --git a/fs/aufs/f_op.c b/fs/aufs/f_op.c -index 6fb4a4ed8cc7f..ba9a959f2db27 100644 +index 99ceca144044..e49dfe855032 100644 --- a/fs/aufs/f_op.c +++ b/fs/aufs/f_op.c -@@ -359,7 +359,7 @@ static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter) +@@ -304,7 +304,7 @@ static ssize_t aufs_read_iter(struct kiocb *kio, struct iov_iter *iov_iter) if (IS_ERR(h_file)) goto out; @@ -39382,7 +39592,7 @@ index 6fb4a4ed8cc7f..ba9a959f2db27 100644 if (file->f_mapping != h_file->f_mapping) { file->f_mapping = h_file->f_mapping; diff --git a/fs/aufs/loop.c b/fs/aufs/loop.c -index a8b63acc62045..9d97c3af5686a 100644 +index 74347bd75b38..5ef888a1d53f 100644 --- a/fs/aufs/loop.c +++ b/fs/aufs/loop.c @@ -133,3 +133,19 @@ void au_loopback_fin(void) @@ -39406,7 +39616,7 @@ index a8b63acc62045..9d97c3af5686a 100644 + return f; +} diff --git a/fs/aufs/loop.h b/fs/aufs/loop.h -index 94f4f80ae33bf..ca1194354aff4 100644 +index 7293bee427f9..3345c098d0d4 100644 --- a/fs/aufs/loop.h +++ b/fs/aufs/loop.h @@ -26,6 +26,8 @@ void au_warn_loopback(struct super_block *h_sb); @@ -39428,15 +39638,15 @@ index 94f4f80ae33bf..ca1194354aff4 100644 #endif /* __KERNEL__ */ diff --git a/fs/aufs/super.c b/fs/aufs/super.c -index 589dd01220201..801e0a7faec59 100644 +index 7d9bcc074c87..0eefe350c01c 100644 --- a/fs/aufs/super.c +++ b/fs/aufs/super.c -@@ -844,7 +844,10 @@ static const struct super_operations aufs_sop = { +@@ -758,7 +758,10 @@ const struct super_operations aufs_sop = { + .show_options = aufs_show_options, .statfs = aufs_statfs, .put_super = aufs_put_super, - .sync_fs = aufs_sync_fs, -- .remount_fs = aufs_remount_fs -+ .remount_fs = aufs_remount_fs, +- .sync_fs = aufs_sync_fs ++ .sync_fs = aufs_sync_fs, +#ifdef CONFIG_AUFS_BDEV_LOOP + .real_loop = aufs_real_loop +#endif @@ -39444,10 +39654,10 @@ index 589dd01220201..801e0a7faec59 100644 /* ---------------------------------------------------------------------- */ diff --git a/include/linux/fs.h b/include/linux/fs.h -index 916efd7e612b3..68f536f42b2a0 100644 +index f5aed17b2ce2..6b2d2256be5f 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h -@@ -1985,6 +1985,10 @@ struct super_operations { +@@ -2121,6 +2121,10 @@ struct super_operations { struct shrink_control *); long (*free_cached_objects)(struct super_block *, struct shrink_control *);