24f44a445c
In order to reduce the pre-requisites of this file, implement the pattern matching and creation of a temporary test directory without use of grep respectively mktemp. The new version makes it possible to provide a writable /tmp in any case and independently of other local or remote file systems (except / and /dev) being mounted. The use of "dd if=/dev/random" has the same dependency on /dev/random being operational as the previous version that used "mktemp". If this is found to be an issue on platforms that do not have gathered sufficient entropy at the time when this scriot is run, I suggest to replace the "dd" command with "ps lauxww" to get a somewhat random test directory name. Approved by: rgrimes, glebius, cy MFC after: 4 weeks Differential Revision: https://reviews.freebsd.org/D28209
80 lines
2.2 KiB
Bash
Executable File
80 lines
2.2 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 1999 Matt Dillon
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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# PROVIDE: tmp
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# REQUIRE: mountcritlocal
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. /etc/rc.subr
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name="tmp"
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desc="Configure tmpfs"
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stop_cmd=':'
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load_rc_config $name
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mount_tmpmfs()
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{
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while read line; do
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case $line in
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/dev/md[0-9]*\ /tmp)
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return;;
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esac
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done <<*EOF
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$(df /tmp)
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*EOF
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mount_md ${tmpsize} /tmp "${tmpmfs_flags}"
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chmod 01777 /tmp
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}
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# If we do not have a writable /tmp, create a memory
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# filesystem for /tmp. If /tmp is a symlink (e.g. to /var/tmp,
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# then it should already be writable).
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#
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case "${tmpmfs}" in
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[Aa][Uu][Tt][Oo])
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_tmpdir=/tmp/.diskless.$(dd if=/dev/random bs=32 count=1 status=none | sha256)
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if mkdir -m 0700 ${_tmpdir}; then
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rmdir ${_tmpdir}
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else
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if [ -h /tmp ]; then
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echo "*** /tmp is a symlink to a non-writable area!"
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echo "dropping into shell, ^D to continue anyway."
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/bin/sh
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else
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mount_tmpmfs
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fi
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fi
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;;
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*)
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if checkyesno tmpmfs; then
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mount_tmpmfs
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fi
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;;
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esac
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