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mountoverflowtmp
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2008-10-14
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#! /bin/sh
### BEGIN INIT INFO
# Provides: mountoverflowtmp
# Required-Start: mountall-bootclean
# Required-Stop: umountfs
# Default-Start: S
# Default-Stop: 0 6
# Short-Description: mount emergency /tmp.
# Description: Mount a tmpfs on /tmp if there would
# otherwise be too little space to log in.
### END INIT INFO
. /lib/init/vars.sh
. /lib/lsb/init-functions
set -e
defs=/etc/default/mountoverflowtmp
test ! -f "$defs" || . "$defs"
: ${MINTMPKB:=1024}
if test "$MINTMPKB" = "0"; then exit 0; fi
case "$1" in
start)
[ "$VERBOSE" != no ] && log_action_begin_msg "Checking minimum space in /tmp"
df="`df -kP /tmp |grep -v Filesystem`"
set -- $df
avail="$4"
[ "$VERBOSE" != no ] && log_action_end_msg 0
if test $avail -lt "$MINTMPKB"; then
log_action_begin_msg "Mounting emergency tmpfs on /tmp"
mount -t tmpfs -o size=1048576,mode=1777 overflow /tmp
log_action_end_msg 0
fi
;;
restart|reload|force-reload)
echo "Error: argument '$1' not supported" >&2
exit 3
;;
stop)
if LANG=C LC_ALL=C mount | \
grep '^overflow on /tmp type tmpfs' >/dev/null; then
log_action_begin_msg "Unmounting any overflow tmpfs from /tmp"
umount overflow
log_action_end_msg 0
fi
;;
*)
echo "Usage: mountoverflowtmp [start|stop]" >&2
exit 3
;;
esac
: