mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-11-30 00:02:44 +00:00
44e0389495
the null mount, we currently create a temporary mfs on /tmp, copy
/etc to /tmp, then mount /etc as mfs and copy everything back from
/tmp, then delete the /tmp mfs.
The patch eliminates the temporary /tmp mfs and the subsequent
copying and simply populates the /etc mfs by copying from
/conf/default/etc. This requires that /conf/default/etc contain a
complete copy of all the /etc stuff instead of just overrides. I
don't think that is too much of an extra step in setting up a
diskless environment.
* Provide the ability to make /tmp a memory filesystem independent
of /var. This removes the requirement that /tmp be a symlink to
/var/tmp and this makes the diskless code work with the default
filesystem layout. If a seperate /tmp memory filesystem is
created, the 'tmpsize' environment variable is used to determine
its size (default to 10 Meg).
* Reduce diffs between the -current and -stable versions of these
files to a bare minimum. Only the definition of the shell
function 'mount_md' is different.
Not Objected to by: -arch@, -small@
MFC after: 2 days
91 lines
3.0 KiB
Plaintext
91 lines
3.0 KiB
Plaintext
# Copyright (c) 1999 Matt Dillon
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
|
|
#
|
|
# rc.diskless2
|
|
#
|
|
|
|
# Provide a function for normalizing the mounting of memory
|
|
# filesystems. This should allow the rest of the code here to remain
|
|
# as close as possible between 5-current and 4-stable.
|
|
# $1 = size
|
|
# $2 = mount point
|
|
# $3 = md unit number (ignored in pre 5.0 systems)
|
|
# $4 = (optional) bytes-per-inode
|
|
mount_md() {
|
|
if [ -n "$4" ]; then
|
|
bpi="-i $4"
|
|
fi
|
|
/sbin/mdconfig -a -t malloc -s $1 -u $3
|
|
/sbin/disklabel -r -w md$3 auto
|
|
/sbin/newfs $bpi /dev/md$3c
|
|
/sbin/mount /dev/md$3c $2
|
|
}
|
|
|
|
# If there is a global system configuration file, suck it in.
|
|
#
|
|
if [ -r /etc/defaults/rc.conf ]; then
|
|
. /etc/defaults/rc.conf
|
|
source_rc_confs
|
|
elif [ -r /etc/rc.conf ]; then
|
|
. /etc/rc.conf
|
|
fi
|
|
|
|
echo "+++ mfs_mount of /var"
|
|
mount_md ${varsize:=65536} /var 1
|
|
|
|
echo "+++ populate /var using /etc/mtree/BSD.var.dist"
|
|
/usr/sbin/mtree -deU -f /etc/mtree/BSD.var.dist -p /var
|
|
|
|
echo "+++ create log files based on the contents of /etc/newsyslog.conf"
|
|
LOGFILES=`/usr/bin/awk '$1 != "#" { printf "%s ", $1 } ' /etc/newsyslog.conf`
|
|
if [ -n "$LOGFILES" ]; then
|
|
/usr/bin/touch $LOGFILES
|
|
fi
|
|
|
|
mount -a # chown and chgrp are in /usr
|
|
|
|
#
|
|
# XXX make sure to create one dir for each printer as requested by lpd
|
|
#
|
|
|
|
# If /tmp is a symlink, assume it points to somewhere writable, like
|
|
# /var/tmp, otherwise, use a small memory filesystem for /tmp.
|
|
if [ ! -h /tmp ]; then
|
|
mount_md ${tmpsize:=20480} /tmp 2
|
|
fi
|
|
|
|
if sysctl vfs.devfs.generation > /dev/null 2>&1 ; then
|
|
# we have DEVFS, no worries...
|
|
true
|
|
else
|
|
# extract a list of device entries, then copy them to a writable fs
|
|
(cd /; find -x dev | cpio -o -H newc) > /tmp/dev.tmp
|
|
mount_md 4096 /dev 3 512
|
|
(cd /; cpio -i -H newc -d < /tmp/dev.tmp)
|
|
fi
|