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//etc/init.d/halt
#!/bin/bash # # halt This file is executed by init when it goes into runlevel # 0 (halt) or runlevel 6 (reboot). It kills all processes, # unmounts file systems and then either halts or reboots. # # Author: Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org> # Modified for RHS Linux by Damien Neil # NOLOCALE=1 . /etc/init.d/functions UMOUNT="umount" [ ! -w /etc ] && UMOUNT="umount -n" action() { echo -n "$1 " shift if [ "$BOOTUP" = "color" ]; then "$@" && echo_success || echo_failure else "$@" fi echo } halt_crypto() { fnval=0 while read dst src key; do [ -z "$dst" -o "${dst#\#}" != "$dst" ] && continue if [ -b "/dev/mapper/$dst" ]; then if /sbin/dmsetup info "$dst" | grep -q '^Open count: *0$'; then action $"Stopping disk encryption for $dst" /sbin/cryptsetup remove "$dst" else fnval=1 fi fi done < /etc/crypttab return $fnval } # See how we were called. case "$0" in *halt) message=$"Halting system..." command="/sbin/halt" ;; *reboot) message=$"Please stand by while rebooting the system..." command="/sbin/reboot" kexec_command="/sbin/kexec" ;; *) echo $"$0: call me as 'halt' or 'reboot' please!" exit 1 ;; esac case "$1" in *start) ;; *) echo $"Usage: $0 {start}" exit 1 ;; esac # Kill all processes. [ "${BASH+bash}" = bash ] && enable kill action $"Sending all processes the TERM signal..." /sbin/killall5 -15 sleep 5 action $"Sending all processes the KILL signal..." /sbin/killall5 -9 # Write to wtmp file before unmounting /var /sbin/halt -w # Save mixer settings, here for lack of a better place. grep -q "\(alsa\)" /proc/devices if [ $? = 0 -a -x /usr/sbin/alsactl ]; then action $"Saving mixer settings" alsactl store fi # Save random seed touch /var/lib/random-seed chmod 600 /var/lib/random-seed action $"Saving random seed: " dd if=/dev/urandom of=/var/lib/random-seed count=1 bs=512 2>/dev/null # Sync the system clock. ARC=0 SRM=0 UTC=0 if [ -f /etc/sysconfig/clock ]; then . /etc/sysconfig/clock # convert old style clock config to new values if [ "${CLOCKMODE}" = "GMT" ]; then UTC=true elif [ "${CLOCKMODE}" = "ARC" ]; then ARC=true fi fi CLOCKDEF="" CLOCKFLAGS="$CLOCKFLAGS --systohc" case "$UTC" in yes|true) CLOCKFLAGS="$CLOCKFLAGS -u"; CLOCKDEF="$CLOCKDEF (utc)"; ;; no|false) CLOCKFLAGS="$CLOCKFLAGS --localtime"; CLOCKDEF="$CLOCKDEF (localtime)"; ;; esac case "$ARC" in yes|true) CLOCKFLAGS="$CLOCKFLAGS -A"; CLOCKDEF="$CLOCKDEF (arc)"; ;; esac case "$SRM" in yes|true) CLOCKFLAGS="$CLOCKFLAGS -S"; CLOCKDEF="$CLOCKDEF (srm)"; ;; esac [ -x /sbin/hwclock -a -e /dev/rtc -a -e /sys/class/misc/rtc/dev ] && action $"Syncing hardware clock to system time" /sbin/hwclock $CLOCKFLAGS # Try to unmount tmpfs filesystems to avoid swapping them in. Ignore failures. tmpfs=$(awk '$2 ~ /^\/($|proc|dev)/ { next; } $3 == "tmpfs" { print $2; }' /proc/mounts | sort -r) [ -n "$tmpfs" ] && fstab-decode $UMOUNT $tmpfs 2>/dev/null # Turn off swap, then unmount file systems. [ -f /proc/swaps ] && SWAPS=`awk '! /^Filename/ { print $1 }' /proc/swaps` if [ -n "$SWAPS" ]; then action $"Turning off swap: " swapoff $SWAPS for dst in $SWAPS; do if [[ "$dst" =~ "^/dev/mapper" ]] \ && [ "$(dmsetup status "$dst" | cut -d ' ' -f 3)" = crypt ]; then backdev=$(/sbin/cryptsetup status "$dst" \ | awk '$1 == "device:" { print $2 }') /sbin/cryptsetup remove "$dst" fi done fi [ -x /sbin/quotaoff ] && action $"Turning off quotas: " /sbin/quotaoff -aug # Unmount file systems, killing processes if we have to. # Unmount loopback stuff first __umount_loopback_loop # Unmount RPC pipe file systems __umount_loop '$3 ~ /^rpc_pipefs$/ || $3 ~ /^rpc_svc_gss_pipefs$/ {print $2}' \ /proc/mounts \ $"Unmounting pipe file systems: " \ $"Unmounting pipe file systems (retry): " \ -f LANG=C __umount_loop '$2 ~ /^\/$|^\/proc|^\/dev/{next} $3 == "tmpfs" || $3 == "proc" {print $2 ; next} $3 ~ /(loopfs|autofs|nfs|cifs|smbfs|ncpfs|sysfs)/ {next} /(^none|^\/dev\/ram|^\/dev\/root$)/ {next} {print $2}' /proc/mounts \ $"Unmounting file systems: " \ $"Unmounting file systems (retry): " \ -f [ -f /proc/bus/usb/devices ] && $UMOUNT /proc/bus/usb [ -f /etc/crypttab ] && halt_crypto # remove the crash indicator flag rm -f /.autofsck # Try all file systems other than root, essential filesystems and RAM disks, # one last time. awk '$2 !~ /\/(|dev|proc|selinux)$/ && $1 !~ /^\/dev\/ram/ { print $2 }' \ /proc/mounts | sort -r | \ while read line; do fstab-decode $UMOUNT -f $line done if [ -x /sbin/halt.local ]; then /sbin/halt.local fi # Remount read only anything that's left mounted. # echo $"Remounting remaining filesystems readonly" mount | awk '{ print $3 }' | while read line; do fstab-decode mount -n -o ro,remount $line done # Now halt or reboot. echo $"$message" if [ -f /fastboot ]; then echo $"On the next boot fsck will be skipped." elif [ -f /forcefsck ]; then echo $"On the next boot fsck will be forced." fi if [ "$command" = /sbin/halt -a -r /etc/ups/upsmon.conf -a -f /etc/killpower -a -f /etc/sysconfig/ups ] ; then . /etc/sysconfig/ups if [ "$SERVER" = "yes" -a "$MODEL" = "upsdrvctl" ] ; then /sbin/upsdrvctl shutdown elif [ "$SERVER" = "yes" -a "$MODEL" != "NONE" -a -n "$MODEL" -a -n "$DEVICE" ] ; then $MODEL $OPTIONS_HALT -k $DEVICE fi fi # First, try kexec. If that fails, fall back to rebooting the old way. [ -n "$kexec_command" ] && $kexec_command -e -x >& /dev/null HALTARGS="-d" [ "$INIT_HALT" != "HALT" ] && HALTARGS="$HALTARGS -p" exec $command $HALTARGS