IABSD.fr/src/libexec/reorder_kernel/reorder_kernel.sh

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• Author : robert
  Date : 2021-09-13 11:49:21
  Hash : ce828c77
  Message : introduce /etc/bsd.re-config which can be used to configure the kernel using config(8); the contents of this configuration file will be fed to config(8) after kernel relinking is done, so on the next boot the new kernel will have all the configuration changes set by the user this comes handy if you still want to use KARL while making changes to the GENERIC kernel diff from Paul de Weerd with input from several developers

• libexec/reorder_kernel/reorder_kernel.sh

• #!/bin/ksh
  #
  # $OpenBSD: reorder_kernel.sh,v 1.10 2021/09/13 11:49:21 robert Exp $
  #
  # Copyright (c) 2017 Robert Peichaer <rpe@openbsd.org>
  #
  # Permission to use, copy, modify, and distribute this software for any
  # purpose with or without fee is hereby granted, provided that the above
  # copyright notice and this permission notice appear in all copies.
  #
  # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  
  set -o errexit
  
  export PATH=/usr/bin:/bin:/usr/sbin:/sbin
  
  # Skip if /usr/share is on a nfs mounted filesystem.
  df -t nfs /usr/share >/dev/null 2>&1 && exit 1
  
  KERNEL=$(sysctl -n kern.osversion)
  KERNEL=${KERNEL%#*}
  KERNEL_DIR=/usr/share/relink/kernel
  LOGFILE=$KERNEL_DIR/$KERNEL/relink.log
  PROGNAME=${0##*/}
  SHA256=/var/db/kernel.SHA256
  
  # Create kernel compile dir and redirect stdout/stderr to a logfile.
  mkdir -m 700 -p $KERNEL_DIR/$KERNEL
  exec 1>$LOGFILE
  exec 2>&1
  
  # Install trap handlers to inform about success or failure via syslog.
  trap 'trap - EXIT; logger -st $PROGNAME \
  	"failed -- see $LOGFILE" >>/dev/console 2>&1' ERR
  trap 'logger -t $PROGNAME "kernel relinking done"' EXIT
  
  if [[ -f $KERNEL_DIR.tgz ]]; then
  	rm -rf $KERNEL_DIR/$KERNEL/*
  	# The directory containing the logfile was just deleted, redirect
  	# stdout again to a new logfile.
  	exec 1>$LOGFILE
  	tar -C $KERNEL_DIR -xzf $KERNEL_DIR.tgz $KERNEL
  	rm -f $KERNEL_DIR.tgz
  fi
  
  if ! sha256 -C $SHA256 /bsd; then
  	cat <<__EOF
  
  Failed to verify /bsd's checksum, therefore a randomly linked kernel (KARL)
  is not being built. KARL can be re-enabled for next boot by issuing as root:
  
  sha256 -h $SHA256 /bsd
  __EOF
  	# Trigger ERR trap
  	false
  fi
  
  cd $KERNEL_DIR/$KERNEL
  make newbsd
  [ -f /etc/bsd.re-config ] && config -e -c /etc/bsd.re-config -f bsd
  make newinstall
  sync
  
  echo "\nKernel has been relinked and is active on next reboot.\n"
  cat $SHA256