+UBUNTU: SAUCE: AppArmor: Add profile introspection file to interface
+
+Add the dynamic profiles file to the interace, to allow load policy
+introspection.
+
+Signed-off-by: John Johansen <john.johansen@canonical.com>
+Acked-by: Kees Cook <kees@ubuntu.com>
+Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
+---
+
+diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c
+index 16c15ec..89bdc62 100644
+--- a/security/apparmor/apparmorfs.c
++++ b/security/apparmor/apparmorfs.c
+@@ -182,6 +182,232 @@ const struct file_operations aa_fs_seq_file_ops = {
+ .release = single_release,
+ };
+
++/**
++ * __next_namespace - find the next namespace to list
++ * @root: root namespace to stop search at (NOT NULL)
++ * @ns: current ns position (NOT NULL)
++ *
++ * Find the next namespace from @ns under @root and handle all locking needed
++ * while switching current namespace.
++ *
++ * Returns: next namespace or NULL if at last namespace under @root
++ * NOTE: will not unlock root->lock
++ */
++static struct aa_namespace *__next_namespace(struct aa_namespace *root,
++ struct aa_namespace *ns)
++{
++ struct aa_namespace *parent;
++
++ /* is next namespace a child */
++ if (!list_empty(&ns->sub_ns)) {
++ struct aa_namespace *next;
++ next = list_first_entry(&ns->sub_ns, typeof(*ns), base.list);
++ read_lock(&next->lock);
++ return next;
++ }
++
++ /* check if the next ns is a sibling, parent, gp, .. */
++ parent = ns->parent;
++ while (parent) {
++ read_unlock(&ns->lock);
++ list_for_each_entry_continue(ns, &parent->sub_ns, base.list) {
++ read_lock(&ns->lock);
++ return ns;
++ }
++ if (parent == root)
++ return NULL;
++ ns = parent;
++ parent = parent->parent;
++ }
++
++ return NULL;
++}
++
++/**
++ * __first_profile - find the first profile in a namespace
++ * @root: namespace that is root of profiles being displayed (NOT NULL)
++ * @ns: namespace to start in (NOT NULL)
++ *
++ * Returns: unrefcounted profile or NULL if no profile
++ */
++static struct aa_profile *__first_profile(struct aa_namespace *root,
++ struct aa_namespace *ns)
++{
++ for ( ; ns; ns = __next_namespace(root, ns)) {
++ if (!list_empty(&ns->base.profiles))
++ return list_first_entry(&ns->base.profiles,
++ struct aa_profile, base.list);
++ }
++ return NULL;
++}
++
++/**
++ * __next_profile - step to the next profile in a profile tree
++ * @profile: current profile in tree (NOT NULL)
++ *
++ * Perform a depth first taversal on the profile tree in a namespace
++ *
++ * Returns: next profile or NULL if done
++ * Requires: profile->ns.lock to be held
++ */
++static struct aa_profile *__next_profile(struct aa_profile *p)
++{
++ struct aa_profile *parent;
++ struct aa_namespace *ns = p->ns;
++
++ /* is next profile a child */
++ if (!list_empty(&p->base.profiles))
++ return list_first_entry(&p->base.profiles, typeof(*p),
++ base.list);
++
++ /* is next profile a sibling, parent sibling, gp, subling, .. */
++ parent = p->parent;
++ while (parent) {
++ list_for_each_entry_continue(p, &parent->base.profiles,
++ base.list)
++ return p;
++ p = parent;
++ parent = parent->parent;
++ }
++
++ /* is next another profile in the namespace */
++ list_for_each_entry_continue(p, &ns->base.profiles, base.list)
++ return p;
++
++ return NULL;
++}
++
++/**
++ * next_profile - step to the next profile in where ever it may be
++ * @root: root namespace (NOT NULL)
++ * @profile: current profile (NOT NULL)
++ *
++ * Returns: next profile or NULL if there isn't one
++ */
++static struct aa_profile *next_profile(struct aa_namespace *root,
++ struct aa_profile *profile)
++{
++ struct aa_profile *next = __next_profile(profile);
++ if (next)
++ return next;
++
++ /* finished all profiles in namespace move to next namespace */
++ return __first_profile(root, __next_namespace(root, profile->ns));
++}
++
++/**
++ * p_start - start a depth first traversal of profile tree
++ * @f: seq_file to fill
++ * @pos: current position
++ *
++ * Returns: first profile under current namespace or NULL if none found
++ *
++ * acquires first ns->lock
++ */
++static void *p_start(struct seq_file *f, loff_t *pos)
++ __acquires(root->lock)
++{
++ struct aa_profile *profile = NULL;
++ struct aa_namespace *root = aa_current_profile()->ns;
++ loff_t l = *pos;
++ f->private = aa_get_namespace(root);
++
++
++ /* find the first profile */
++ read_lock(&root->lock);
++ profile = __first_profile(root, root);
++
++ /* skip to position */
++ for (; profile && l > 0; l--)
++ profile = next_profile(root, profile);
++
++ return profile;
++}
++
++/**
++ * p_next - read the next profile entry
++ * @f: seq_file to fill
++ * @p: profile previously returned
++ * @pos: current position
++ *
++ * Returns: next profile after @p or NULL if none
++ *
++ * may acquire/release locks in namespace tree as necessary
++ */
++static void *p_next(struct seq_file *f, void *p, loff_t *pos)
++{
++ struct aa_profile *profile = p;
++ struct aa_namespace *root = f->private;
++ (*pos)++;
++
++ return next_profile(root, profile);
++}
++
++/**
++ * p_stop - stop depth first traversal
++ * @f: seq_file we are filling
++ * @p: the last profile writen
++ *
++ * Release all locking done by p_start/p_next on namespace tree
++ */
++static void p_stop(struct seq_file *f, void *p)
++ __releases(root->lock)
++{
++ struct aa_profile *profile = p;
++ struct aa_namespace *root = f->private, *ns;
++
++ if (profile) {
++ for (ns = profile->ns; ns && ns != root; ns = ns->parent)
++ read_unlock(&ns->lock);
++ }
++ read_unlock(&root->lock);
++ aa_put_namespace(root);
++}
++
++/**
++ * seq_show_profile - show a profile entry
++ * @f: seq_file to file
++ * @p: current position (profile) (NOT NULL)
++ *
++ * Returns: error on failure
++ */
++static int seq_show_profile(struct seq_file *f, void *p)
++{
++ struct aa_profile *profile = (struct aa_profile *)p;
++ struct aa_namespace *root = f->private;
++
++ if (profile->ns != root)
++ seq_printf(f, ":%s://", aa_ns_name(root, profile->ns));
++ seq_printf(f, "%s (%s)\n", profile->base.hname,
++ COMPLAIN_MODE(profile) ? "complain" : "enforce");
++
++ return 0;
++}
++
++static const struct seq_operations aa_fs_profiles_op = {
++ .start = p_start,
++ .next = p_next,
++ .stop = p_stop,
++ .show = seq_show_profile,
++};
++
++static int profiles_open(struct inode *inode, struct file *file)
++{
++ return seq_open(file, &aa_fs_profiles_op);
++}
++
++static int profiles_release(struct inode *inode, struct file *file)
++{
++ return seq_release(inode, file);
++}
++
++const struct file_operations aa_fs_profiles_fops = {
++ .open = profiles_open,
++ .read = seq_read,
++ .llseek = seq_lseek,
++ .release = profiles_release,
++};
++
+ /** Base file system setup **/
+
+ static struct aa_fs_entry aa_fs_entry_file[] = {
+@@ -210,6 +436,7 @@ static struct aa_fs_entry aa_fs_entry_apparmor[] = {
+ AA_FS_FILE_FOPS(".load", 0640, &aa_fs_profile_load),
+ AA_FS_FILE_FOPS(".replace", 0640, &aa_fs_profile_replace),
+ AA_FS_FILE_FOPS(".remove", 0640, &aa_fs_profile_remove),
++ AA_FS_FILE_FOPS("profiles", 0640, &aa_fs_profiles_fops),
+ AA_FS_DIR("features", aa_fs_entry_features),
+ { }
+ };
+From: John Johansen <john.johansen@canonical.com>
+Date: Mon, 4 Oct 2010 22:03:36 +0000 (-0700)
+Subject: UBUNTU: SAUCE: AppArmor: basic networking rules
+X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fjj%2Flinux-apparmor.git;a=commitdiff_plain;h=423e2cb454d75d6185eecd0c1b5cf6ccc2d8482d
+
+UBUNTU: SAUCE: AppArmor: basic networking rules
+
+Base support for network mediation.
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