# properly during development...
# default value, if no config present.
-udev_root="/dev/"
+udev_root="/dev"
sysfs_dir="/sys"
udevd_timeout=8
prog=udev
bin=/sbin/udev
udevd=/lib/udev/udevd
+# trim traling slash, code expects it not to be there
+udev_root=${udev_root%/}
make_extra_nodes () {
grep '^[^#]' /etc/udev/links.conf | \
echo "" > /proc/sys/kernel/hotplug
}
+# find subdirs mounted under $udev_root
+get_dev_mounts() {
+ awk -vudev_root="$udev_root/" '
+ BEGIN {
+ len = length(udev_root);
+ }
+
+ substr($2, 1, len) == udev_root {
+ print substr($2, len + 1)
+ }' /proc/mounts
+}
+
export ACTION=add
prog=udev
ret=0
show "Starting udev"
busy
-# mount the devtmpfs on ${udev_root%/}, if not already done
-awk "\$2 == \"${udev_root%/}\" && \$3 == \"devtmpfs\" { exit 1 }" /proc/mounts && {
-
- if grep -qF "none ${udev_root%/}/pts " /proc/mounts; then
- PTSDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX)
- mount --move $udev_root/pts "$PTSDIR"
+# mount the devtmpfs on $udev_root, if not already done
+awk "\$2 == \"$udev_root\" && \$3 == \"devtmpfs\" { exit 1 }" /proc/mounts && {
+ submounts=$(get_dev_mounts)
+
+ if [ "$submounts" ]; then
+ # mount to temporary location to be able to move submounts
+ # this needs writable TMPDIR:-/tmp, so it won't work in early boot
+ # but fix is simple: use initramfs instead of romfs
+ devdir=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX)
+ else
+ devdir=$udev_root
fi
+ mount -n -o mode=0755 -t devtmpfs devtmpfs "$devdir"
+ ret=$(( $ret + $? ))
- if grep -qF "none ${udev_root%/}/shm " /proc/mounts; then
- SHMDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX)
- mount --move $udev_root/shm "$SHMDIR"
- fi
+ # relocate submounts
+ for dir in $submounts; do
+ mount -n --move $udev_root/$dir $devdir/$dir
+ ret=$(( $ret + $? ))
+ done
- mount -n -o mode=0755 -t devtmpfs devtmpfs "$udev_root"
- mkdir -m 0755 $udev_root/pts
- mkdir -m 0755 $udev_root/shm
- if [ -n "$PTSDIR" ]; then
- mount --move "$PTSDIR" $udev_root/pts
- rmdir "$PTSDIR"
- fi
- if [ -n "$SHMDIR" ]; then
- mount --move "$SHMDIR" $udev_root/shm
- rmdir "$SHMDIR"
+ if [ "$submounts" ]; then
+ mount -n --move $devdir $udev_root
+ rmdir $devdir
fi
-
- ret=$(( $ret + $? ))
}
kill_udevd > "$udev_root/null" 2>&1