/etc/init.d/udev-mtab is in udev 175-7.2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | #!/bin/sh -e
### BEGIN INIT INFO
# Provides: udev-mtab
# Required-Start: udev $local_fs
# Required-Stop:
# Default-Start: S
# Default-Stop:
# Short-Description: Add to mtab the entry for /dev.
### END INIT INFO
PATH="/sbin:/bin"
case "$1" in
start) ;;
stop|restart|force-reload) exit 0 ;;
*) echo "Usage: $0 {start|stop|restart|force-reload}" >&2; exit 1 ;;
esac
# copy the rules generated before / was mounted read-write
for file in /dev/.udev/tmp-rules--* /run/udev/tmp-rules--*; do
dest=${file##*tmp-rules--}
[ "$dest" = '*' ] && continue
cat $file >> /etc/udev/rules.d/$dest
rm -f $file
done
# if it's not, it's probably a symlink to /proc/mounts
[ -w /etc/mtab ] || exit 0
# defaults
tmpfs_size="10M"
udev_root="/dev/"
if [ -e /etc/udev/udev.conf ]; then
. /etc/udev/udev.conf
fi
# strip the trailing slash
udev_root=${udev_root%/}
if mountpoint -q $udev_root; then
if ! grep -E --quiet --no-messages "^[^ ]+ +$udev_root +" /etc/mtab; then
mtabline="$(grep -E --no-messages "^[^ ]+ +$udev_root +(dev)?tmpfs +" /proc/mounts || true)"
if [ "$mtabline" ]; then
echo "$mtabline" >> /etc/mtab
fi
fi
fi
exit 0
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