reorder_kernel.sh revision 1.2 
1#!/bin/ksh
2#
3# $OpenBSD: reorder_kernel.sh,v 1.2 2017/08/25 18:27:41 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
21# Skip if /usr/share is on a nfs mounted filesystem.
22DISK_DEV=$(df /usr/share | sed '1d;s/ .*//')
23[[ $(mount | grep "^$DISK_DEV") == *" type nfs "* ]] && exit 1
24
25COMPILE_DIR=/usr/share/compile
26KERNEL=$(sysctl -n kern.osversion)
27KERNEL=${KERNEL%#*}
28LOGFILE=$COMPILE_DIR/$KERNEL/relink.log
29PROGNAME=${0##*/}
30SHA256=/var/db/kernel.SHA256
31
32# Create kernel compile dir and redirect stdout/stderr to a logfile.
33mkdir -m 700 -p $COMPILE_DIR/$KERNEL
34exec 1>$LOGFILE
35exec 2>&1
36
37# Install trap handlers to inform about success or failure via syslog.
38trap 'trap - EXIT; logger -st $PROGNAME \
39	"kernel relinking failed; see $LOGFILE" >>/dev/console 2>&1' ERR
40trap 'logger -t $PROGNAME "kernel relinking done"' EXIT
41
42if [[ -f $COMPILE_DIR.tgz ]]; then
43	rm -rf $COMPILE_DIR/$KERNEL/*
44	# The directory containing the logfile was just deleted, redirect
45	# stdout again to a new logfile.
46	exec 1>$LOGFILE
47	tar -C $COMPILE_DIR -xzf $COMPILE_DIR.tgz $KERNEL
48	rm -f $COMPILE_DIR.tgz
49fi
50
51sha256 -C $SHA256 /bsd
52
53cd $COMPILE_DIR/$KERNEL
54make newbsd
55make newinstall
56
57echo "\nKernel has been relinked and is active on next reboot.\n"
58cat $SHA256
59