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

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• Author : ajacoutot
  Date : 2019-09-28 17:30:07
  Hash : 1a49fa34
  Message : Add where missing and harmonize PATH to be _PATH_DEFPATH (without local nor X11R6). Suggested by tb@ ok deraadt@ tb@ millert@

• libexec/reorder_kernel/reorder_kernel.sh

• #!/bin/ksh
  #
  # $OpenBSD: reorder_kernel.sh,v 1.9 2019/09/28 17:30:07 ajacoutot 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
  make newinstall
  sync
  
  echo "\nKernel has been relinked and is active on next reboot.\n"
  cat $SHA256