1#!/bin/sh 2# 3# Copyright (c) 1999 Matt Dillon 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer. 11# 2. Redistributions in binary form must reproduce the above copyright 12# notice, this list of conditions and the following disclaimer in the 13# documentation and/or other materials provided with the distribution. 14# 15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25# SUCH DAMAGE. 26# 27# 28 29# PROVIDE: tmp 30# REQUIRE: mountcritlocal 31 32. /etc/rc.subr 33 34name="tmp" 35desc="Configure tmpfs" 36stop_cmd=':' 37 38load_rc_config $name 39 40# doesn't make sense to run in a svcj: mounting 41tmp_svcj="NO" 42 43mount_tmpmfs() 44{ 45 while read _dev _ _ _ _ _mp; do 46 case ${_mp} in 47 /tmp) 48 case ${_dev} in 49 tmpfs|/dev/md[0-9]*) 50 return 0 51 ;; 52 esac 53 ;; 54 esac 55 done <<*EOF 56$(df /tmp) 57*EOF 58 mount_md ${tmpsize} /tmp "${tmpmfs_flags}" 59 chmod 01777 /tmp 60} 61 62# If we do not have a writable /tmp, create a memory 63# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp, 64# then it should already be writable). 65# 66case "${tmpmfs}" in 67[Aa][Uu][Tt][Oo]) 68 _tmpdir=/tmp/.diskless.$(dd if=/dev/random bs=32 count=1 status=none | sha256) 69 if mkdir -m 0700 ${_tmpdir}; then 70 rmdir ${_tmpdir} 71 else 72 if [ -h /tmp ]; then 73 echo "*** /tmp is a symlink to a non-writable area!" 74 echo "dropping into shell, ^D to continue anyway." 75 /bin/sh 76 else 77 mount_tmpmfs 78 fi 79 fi 80 ;; 81*) 82 if checkyesno tmpmfs; then 83 mount_tmpmfs 84 fi 85 ;; 86esac 87