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 40mount_tmpmfs() 41{ 42 while read line; do 43 case $line in 44 /dev/md[0-9]*\ /tmp) 45 return;; 46 esac 47 done <<*EOF 48$(df /tmp) 49*EOF 50 mount_md ${tmpsize} /tmp "${tmpmfs_flags}" 51 chmod 01777 /tmp 52} 53 54# If we do not have a writable /tmp, create a memory 55# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp, 56# then it should already be writable). 57# 58case "${tmpmfs}" in 59[Aa][Uu][Tt][Oo]) 60 _tmpdir=/tmp/.diskless.$(dd if=/dev/random bs=32 count=1 status=none | sha256) 61 if mkdir -m 0700 ${_tmpdir}; then 62 rmdir ${_tmpdir} 63 else 64 if [ -h /tmp ]; then 65 echo "*** /tmp is a symlink to a non-writable area!" 66 echo "dropping into shell, ^D to continue anyway." 67 /bin/sh 68 else 69 mount_tmpmfs 70 fi 71 fi 72 ;; 73*) 74 if checkyesno tmpmfs; then 75 mount_tmpmfs 76 fi 77 ;; 78esac 79