xref: /freebsd/libexec/rc/rc.d/tmp (revision 6829dae12bb055451fa467da4589c43bd03b1e64)
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# $FreeBSD$
28#
29
30# PROVIDE: tmp
31# REQUIRE: mountcritremote
32
33. /etc/rc.subr
34
35name="tmp"
36desc="Configure tmpfs"
37stop_cmd=':'
38
39load_rc_config $name
40
41mount_tmpmfs()
42{
43	if ! /bin/df /tmp | grep -q "^/dev/md[0-9].* /tmp"; then
44		mount_md ${tmpsize} /tmp "${tmpmfs_flags}"
45		chmod 01777 /tmp
46	fi
47}
48
49# If we do not have a writable /tmp, create a memory
50# filesystem for /tmp.  If /tmp is a symlink (e.g. to /var/tmp,
51# then it should already be writable).
52#
53case "${tmpmfs}" in
54[Aa][Uu][Tt][Oo])
55	if _tmpdir=$(mktemp -d -q /tmp/.diskless.XXXXXX); then
56		rmdir ${_tmpdir}
57	else
58		if [ -h /tmp ]; then
59			echo "*** /tmp is a symlink to a non-writable area!"
60			echo "dropping into shell, ^D to continue anyway."
61			/bin/sh
62		else
63			mount_tmpmfs
64		fi
65	fi
66	;;
67*)
68	if checkyesno tmpmfs; then
69		mount_tmpmfs
70	fi
71	;;
72esac
73