75 lines
2.3 KiB
Bash
75 lines
2.3 KiB
Bash
#!/bin/ksh
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#
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# $OpenBSD: reorder_kernel.sh,v 1.13 2022/11/07 15:55:56 kn Exp $
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#
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# Copyright (c) 2017 Robert Peichaer <rpe@openbsd.org>
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#
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# Permission to use, copy, modify, and distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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set -o errexit
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export PATH=/usr/bin:/bin:/usr/sbin:/sbin
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KERNEL=$(sysctl -n kern.osversion)
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KERNEL=${KERNEL%#*}
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KERNEL_DIR=/usr/share/relink/kernel
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LOGFILE=$KERNEL_DIR/$KERNEL/relink.log
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PROGNAME=${0##*/}
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SHA256=/var/db/kernel.SHA256
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# Silently skip if on a NFS mounted filesystem.
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df -t nonfs $KERNEL_DIR >/dev/null 2>&1
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# Install trap handlers to inform about success or failure via syslog.
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ERRMSG='failed'
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trap 'trap - EXIT; logger -st $PROGNAME "$ERRMSG" >/dev/console 2>&1' ERR
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trap 'logger -t $PROGNAME "kernel relinking done"' EXIT
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# Create kernel compile dir and redirect stdout/stderr to a logfile.
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mkdir -m 700 -p $KERNEL_DIR/$KERNEL
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exec 1>$LOGFILE
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exec 2>&1
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ERRMSG="failed -- see $LOGFILE"
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if [[ -f $KERNEL_DIR.tgz ]]; then
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rm -rf $KERNEL_DIR/$KERNEL/*
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# The directory containing the logfile was just deleted, redirect
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# stdout/stderr again to a new logfile.
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exec 1>$LOGFILE
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exec 2>&1
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tar -C $KERNEL_DIR -xzf $KERNEL_DIR.tgz $KERNEL
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rm -f $KERNEL_DIR.tgz
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fi
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if ! sha256 -C $SHA256 /bsd; then
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cat <<__EOF
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Failed to verify /bsd's checksum, therefore a randomly linked kernel (KARL)
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is not being built. KARL can be re-enabled for next boot by issuing as root:
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sha256 -h $SHA256 /bsd
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__EOF
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# Trigger ERR trap
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false
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fi
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cd $KERNEL_DIR/$KERNEL
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make newbsd
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[ -f /etc/bsd.re-config ] && config -e -c /etc/bsd.re-config -f bsd
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make newinstall
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sync
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echo "\nKernel has been relinked and is active on next reboot.\n"
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cat $SHA256
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