reorder_kernel.sh revision 1.4 
1#!/bin/ksh
2#
3# $OpenBSD: reorder_kernel.sh,v 1.4 2017/11/05 10:29:24 rpe Exp $
4#
5# Copyright (c) 2017 Robert Peichaer <rpe@openbsd.org>
6#
7# Permission to use, copy, modify, and distribute this software for any
8# purpose with or without fee is hereby granted, provided that the above
9# copyright notice and this permission notice appear in all copies.
10#
11# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18
19set -o errexit
20
21export PATH=/bin:/sbin:/usr/bin:/usr/sbin
22
23# Skip if /usr/share is on a nfs mounted filesystem.
24DISK_DEV=$(df /usr/share | sed '1d;s/ .*//')
25[[ $(mount | grep "^$DISK_DEV") == *" type nfs "* ]] && exit 1
26
27KERNEL=$(sysctl -n kern.osversion)
28KERNEL=${KERNEL%#*}
29KERNEL_DIR=/usr/share/relink/kernel
30LOGFILE=$KERNEL_DIR/$KERNEL/relink.log
31PROGNAME=${0##*/}
32SHA256=/var/db/kernel.SHA256
33
34# Create kernel compile dir and redirect stdout/stderr to a logfile.
35mkdir -m 700 -p $KERNEL_DIR/$KERNEL
36exec 1>$LOGFILE
37exec 2>&1
38
39# Install trap handlers to inform about success or failure via syslog.
40trap 'trap - EXIT; logger -st $PROGNAME \
41	"kernel relinking failed; see $LOGFILE" >>/dev/console 2>&1' ERR
42trap 'logger -t $PROGNAME "kernel relinking done"' EXIT
43
44if [[ -f $KERNEL_DIR.tgz ]]; then
45	rm -rf $KERNEL_DIR/$KERNEL/*
46	# The directory containing the logfile was just deleted, redirect
47	# stdout again to a new logfile.
48	exec 1>$LOGFILE
49	tar -C $KERNEL_DIR -xzf $KERNEL_DIR.tgz $KERNEL
50	rm -f $KERNEL_DIR.tgz
51fi
52
53sha256 -C $SHA256 /bsd
54
55cd $KERNEL_DIR/$KERNEL
56make newbsd
57make newinstall
58
59echo "\nKernel has been relinked and is active on next reboot.\n"
60cat $SHA256
61