1 | #!/bin/bash |
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2 | # |
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3 | # halt This file is executed by init when it goes into runlevel |
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4 | # 0 (halt) or runlevel 6 (reboot). It kills all processes, |
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5 | # unmounts file systems and then either halts or reboots. |
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6 | # |
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7 | # Author: Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org> |
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8 | # Modified for RHS Linux by Damien Neil |
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9 | # |
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10 | |
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11 | NOLOCALE=1 |
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12 | . /etc/init.d/functions |
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13 | |
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14 | action() { |
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15 | echo -n "$1 " |
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16 | shift |
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17 | if [ "$BOOTUP" = "color" ]; then |
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18 | "$@" && echo_success || echo_failure |
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19 | else |
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20 | "$@" |
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21 | fi |
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22 | echo |
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23 | } |
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24 | |
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25 | halt_crypto() { |
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26 | fnval=0 |
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27 | while read dst src key; do |
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28 | [ -z "$dst" -o "${dst#\#}" != "$dst" ] && continue |
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29 | if [ -b "/dev/mapper/$dst" ]; then |
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30 | if /sbin/dmsetup info "$dst" | grep -q '^Open count: *0$'; then |
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31 | /sbin/cryptsetup remove "$dst" |
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32 | else |
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33 | fnval=1 |
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34 | fi |
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35 | fi |
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36 | done < /etc/crypttab |
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37 | return $fnval |
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38 | } |
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39 | |
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40 | # See how we were called. |
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41 | case "$0" in |
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42 | *halt) |
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43 | message=$"Halting system..." |
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44 | command="/sbin/halt" |
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45 | ;; |
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46 | *reboot) |
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47 | message=$"Please stand by while rebooting the system..." |
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48 | command="/sbin/reboot" |
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49 | kexec_command="/sbin/kexec" |
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50 | ;; |
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51 | *) |
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52 | echo $"$0: call me as 'halt' or 'reboot' please!" |
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53 | exit 1 |
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54 | ;; |
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55 | esac |
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56 | case "$1" in |
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57 | *start) |
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58 | ;; |
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59 | *) |
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60 | echo $"Usage: $0 {start}" |
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61 | exit 1 |
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62 | ;; |
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63 | esac |
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64 | |
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65 | update_boot_stage kill |
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66 | |
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67 | # Kill all processes. |
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68 | [ "${BASH+bash}" = bash ] && enable kill |
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69 | |
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70 | action $"Sending all processes the TERM signal..." /sbin/killall5 -15 |
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71 | sleep 2 |
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72 | action $"Sending all processes the KILL signal..." /sbin/killall5 -9 |
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73 | |
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74 | # Write to wtmp file before unmounting /var |
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75 | /sbin/halt -w |
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76 | |
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77 | # Save random seed |
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78 | touch /var/lib/random-seed |
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79 | chmod 600 /var/lib/random-seed |
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80 | action $"Saving random seed: " dd if=/dev/urandom of=/var/lib/random-seed count=1 bs=512 2>/dev/null |
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81 | |
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82 | update_boot_stage clock |
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83 | [ -x /sbin/hwclock ] && action $"Syncing hardware clock to system time" /sbin/hwclock --systohc |
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84 | |
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85 | update_boot_stage umount |
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86 | |
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87 | # If noumount or readonlyroot is specified, skip umounting filesystems |
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88 | if ( ! egrep -q "(noumount|readonlyroot)" /proc/cmdline ); then |
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89 | |
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90 | # Try to unmount tmpfs filesystems to avoid swapping them in. Ignore failures. |
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91 | tmpfs=$(awk '$2 ~ /^\/($|proc|dev)/ { next; } |
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92 | $3 == "tmpfs" { print $2; }' /proc/mounts | sort -r) |
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93 | [ -n "$tmpfs" ] && fstab-decode umount $tmpfs 2>/dev/null |
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94 | |
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95 | # Turn off swap, then unmount file systems. |
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96 | [ -f /proc/swaps ] && SWAPS=`awk '! /^Filename/ { print $1 }' /proc/swaps` |
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97 | if [ -n "$SWAPS" ]; then |
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98 | action $"Turning off swap: " swapoff $SWAPS |
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99 | for dst in $SWAPS; do |
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100 | if [[ "$dst" =~ ^/dev/mapper ]] \ |
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101 | && [ "$(dmsetup status "$dst" | cut -d ' ' -f 3)" = crypt ]; then |
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102 | backdev=$(/sbin/cryptsetup status "$dst" \ |
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103 | | awk '$1 == "device:" { print $2 }') |
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104 | /sbin/cryptsetup remove "$dst" |
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105 | # Leave partition with a blank plain-text swap |
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106 | mkswap "$backdev" > /dev/null |
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107 | fi |
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108 | done |
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109 | fi |
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110 | |
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111 | [ -x /sbin/quotaoff ] && action $"Turning off quotas: " /sbin/quotaoff -aug |
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112 | |
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113 | # Unmount file systems, killing processes if we have to. |
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114 | # Unmount loopback stuff first |
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115 | __umount_loopback_loop |
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116 | |
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117 | # Unmount RPC pipe file systems |
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118 | __umount_loop '$3 ~ /^rpc_pipefs$/ || $3 ~ /^rpc_svc_gss_pipefs$/ {print $2}' \ |
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119 | /proc/mounts \ |
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120 | $"Unmounting pipe file systems: " \ |
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121 | $"Unmounting pipe file systems (retry): " \ |
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122 | -f |
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123 | |
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124 | LANG=C __umount_loop '$2 ~ /^\/$|^\/proc|^\/dev/{next} |
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125 | $3 == "tmpfs" || $3 == "proc" {print $2 ; next} |
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126 | /(loopfs|autofs|nfs|cifs|smbfs|ncpfs|sysfs|^none|^\/dev\/ram|^\/dev\/root$)/ {next} |
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127 | {print $2}' /proc/mounts \ |
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128 | $"Unmounting file systems: " \ |
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129 | $"Unmounting file systems (retry): " \ |
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130 | -f |
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131 | |
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132 | [ -f /proc/bus/usb/devices ] && umount /proc/bus/usb |
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133 | |
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134 | [ -f /etc/crypttab ] && \ |
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135 | LANG=C action $"Stopping disk encryption: " halt_crypto |
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136 | |
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137 | # remove the crash indicator flag |
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138 | rm -f /.autofsck |
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139 | |
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140 | update_boot_stage umount_force |
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141 | |
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142 | # Try all file systems other than root, essential filesystems and RAM disks, |
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143 | # one last time. |
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144 | awk '$2 !~ /\/(|dev|proc|selinux|sys)$/ && $1 !~ /^\/dev\/ram/ { print $2 }' \ |
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145 | /proc/mounts | sort -r | \ |
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146 | while read line; do |
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147 | fstab-decode umount -f $line |
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148 | done |
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149 | |
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150 | if [ -x /sbin/halt.local ]; then |
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151 | /sbin/halt.local |
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152 | fi |
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153 | |
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154 | update_boot_stage remount_ro |
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155 | |
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156 | # Remount read only anything that's left mounted. |
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157 | # echo $"Remounting remaining filesystems readonly" |
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158 | mount | awk '{ print $3 }' | while read line; do |
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159 | fstab-decode mount -n -o ro,remount $line |
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160 | done |
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161 | |
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162 | fi # noumouont or readonlyroot |
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163 | |
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164 | update_boot_stage jalt |
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165 | |
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166 | # Now halt or reboot. |
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167 | echo $"$message" |
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168 | if [ -f /fastboot ]; then |
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169 | echo $"On the next boot fsck will be skipped." |
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170 | elif [ -f /forcefsck ]; then |
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171 | echo $"On the next boot fsck will be forced." |
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172 | fi |
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173 | |
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174 | # Shutdown UPS drivers |
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175 | if [ "$command" = /sbin/halt -a -f /etc/sysconfig/ups ]; then |
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176 | . /etc/sysconfig/ups |
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177 | if [ -z $POWERDOWNFLAG ]; then |
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178 | POWERDOWNFLAG=/etc/killpower |
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179 | fi |
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180 | if [ "$SERVER" = "yes" -a -f $POWERDOWNFLAG ]; then |
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181 | /sbin/upsdrvctl shutdown |
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182 | fi |
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183 | fi |
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184 | |
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185 | # First, try kexec. If that fails, fall back to rebooting the old way. |
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186 | [ -n "$kexec_command" ] && $kexec_command -e -x >& /dev/null |
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187 | |
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188 | HALTARGS="-d" |
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189 | [ -f /poweroff -o ! -f /halt ] && HALTARGS="$HALTARGS -p" |
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190 | |
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191 | exec $command $HALTARGS |
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