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|
#! /bin/sh
### BEGIN INIT INFO
# Provides: mtab
# Required-Start: checkroot
# Required-Stop:
# Default-Start: S
# Default-Stop:
# Short-Description: Update mtab file.
# Description: Update the mount program's mtab file after
# all local filesystems have been mounted.
### END INIT INFO
#
# The main purpose of this script is to update the mtab file to reflect
# the fact that virtual filesystems were mounted early on, before mtab
# was writable.
#
PATH=/sbin:/bin
. /lib/init/vars.sh
TTYGRP=5
TTYMODE=620
[ -f /etc/default/devpts ] && . /etc/default/devpts
TMPFS_SIZE=
[ -f /etc/default/tmpfs ] && . /etc/default/tmpfs
KERNEL="$(uname -s)"
. /lib/lsb/init-functions
. /lib/init/mount-functions.sh
# $1 - fstype
# $2 - mount point
# $3 - mount name/device
# $4 - mount options
domtab ()
{
# Directory present?
if [ ! -d $2 ]
then
return
fi
# Not mounted?
if ! mountpoint -q $2 < /dev/null
then
return
fi
if [ -n "$3" ]
then
NAME="$3"
else
NAME="$1"
fi
# Already recorded?
if ! grep -E -sq "^([^ ]+) +$2 +" /etc/mtab < /dev/null
then
mount -f -t $1 $OPTS $4 $NAME $2 < /dev/null
fi
}
do_start () {
DO_MTAB=""
MTAB_PATH="$(readlink -f /etc/mtab || :)"
case "$MTAB_PATH" in
/proc/*)
# Assume that /proc/ is not writable
;;
/*)
# Only update mtab if it is known to be writable
# Note that the touch program is in /usr/bin
#if ! touch "$MTAB_PATH" >/dev/null 2>&1
#then
# return
#fi
;;
"")
[ -L /etc/mtab ] && MTAB_PATH="$(readlink /etc/mtab)"
if [ "$MTAB_PATH" ]
then
log_failure_msg "Cannot initialize ${MTAB_PATH}."
else
log_failure_msg "Cannot initialize /etc/mtab."
fi
;;
*)
log_failure_msg "Illegal mtab location '${MTAB_PATH}'."
;;
esac
#
# Initialize mtab file if necessary
#
if [ ! -f /etc/mtab ]
then
:> /etc/mtab
chmod 644 /etc/mtab
fi
if selinux_enabled && [ -x /sbin/restorecon ] && [ -r /etc/mtab ]
then
restorecon /etc/mtab
fi
# S02mountkernfs.sh
RW_OPT=
[ "${RW_SIZE:=$TMPFS_SIZE}" ] && RW_OPT=",size=$RW_SIZE"
domtab tmpfs /lib/init/rw tmpfs -omode=0755,nosuid$RW_OPT
domtab proc /proc "proc" -onodev,noexec,nosuid
if grep -E -qs "sysfs\$" /proc/filesystems
then
domtab sysfs /sys sysfs -onodev,noexec,nosuid
fi
if [ yes = "$RAMRUN" ] ; then
RUN_OPT=
[ "${RUN_SIZE:=$TMPFS_SIZE}" ] && RUN_OPT=",size=$RUN_SIZE"
domtab tmpfs /var/run "varrun" -omode=0755,nosuid$RUN_OPT
fi
if [ yes = "$RAMLOCK" ] ; then
LOCK_OPT=
[ "${LOCK_SIZE:=$TMPFS_SIZE}" ] && LOCK_OPT=",size=$LOCK_SIZE"
domtab tmpfs /var/lock "varlock" -omode=1777,nodev,noexec,nosuid$LOCK_OPT
fi
if [ -d /proc/bus/usb ]
then
domtab usbfs /proc/bus/usb "procbususb"
fi
# S03udev
domtab tmpfs /dev "udev" -omode=0755
# S04mountdevsubfs
SHM_OPT=
[ "${SHM_SIZE:=$TMPFS_SIZE}" ] && SHM_OPT=",size=$SHM_SIZE"
domtab tmpfs /dev/shm tmpfs -onosuid,nodev$SHM_OPT
domtab devpts /dev/pts "devpts" -onoexec,nosuid,gid=$TTYGRP,mode=$TTYMODE
# Add everything else in /proc/mounts into /etc/mtab, with
# special exceptions.
exec 9<&0 0</proc/mounts
while read FDEV FDIR FTYPE FOPTS REST
do
case "$FDIR" in
/lib/modules/*/volatile)
FDEV="lrm"
;;
/dev/.static/dev)
# Not really useful to show in 'df',
# and it isn't accessible for non-root
# users.
continue
;;
esac
domtab "$FTYPE" "$FDIR" "$FDEV" "-o$FOPTS"
done
exec 0<&9 9<&-
}
case "$1" in
start|"")
do_start
;;
restart|reload|force-reload)
echo "Error: argument '$1' not supported" >&2
exit 3
;;
stop)
# No-op
;;
*)
echo "Usage: mountall-mtab.sh [start|stop]" >&2
exit 3
;;
esac
:
|
