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Contents of /branches/rc-scripts-1_6/init.d/halt.sh

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Revision 1231 - (show annotations) (download) (as text)
Mon Jun 13 02:25:31 2005 UTC (9 years, 6 months ago) by vapier
File MIME type: text/x-sh
File size: 6822 byte(s)
merge cvs Header removal from trunk
1 # Copyright 1999-2005 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3
4 # Check to see if this is a livecd, if it is read the commandline
5 # this mainly makes sure $CDBOOT is defined if it's a livecd
6 [[ -f /sbin/livecd-functions.sh ]] && \
7 source /sbin/livecd-functions.sh && \
8 livecd_read_commandline
9
10 # Reset pam_console permissions if we are actually using it
11 if [[ -x /sbin/pam_console_apply && ! -c /dev/.devfsd && \
12 -n $(grep -v -e '^[[:space:]]*#' /etc/pam.d/* | grep 'pam_console') ]]; then
13 /sbin/pam_console_apply -r
14 fi
15
16 # We need to properly terminate devfsd to save the permissions
17 if [[ -n $(ps --no-heading -C 'devfsd') ]]; then
18 ebegin "Stopping devfsd"
19 killall -15 devfsd &>/dev/null
20 eend $?
21 elif [[ ! -e /dev/.devfsd && -e /dev/.udev && -z ${CDBOOT} && \
22 ${RC_DEVICE_TARBALL} == "yes" ]] && \
23 touch /lib/udev-state/devices.tar.bz2 2>/dev/null
24 then
25 ebegin "Saving device nodes"
26 # Handle our temp files
27 devices_udev=$(mktemp /tmp/devices.udev.XXXXXX)
28 devices_real=$(mktemp /tmp/devices.real.XXXXXX)
29 device_tarball=$(mktemp /tmp/devices-XXXXXX)
30
31 if [[ -z ${devices_udev} || -z ${devices_real} || \
32 -z ${device_tarball} ]]; then
33 eend 1 "Could not create temporary files!"
34 else
35 cd /dev
36 # Find all devices
37 find . -xdev -type b -or -type c -or -type l | cut -d/ -f2- > \
38 "${devices_real}"
39 # Figure out what udev created
40 eval $(grep '^[[:space:]]*udev_db=' /etc/udev/udev.conf)
41 if [[ -d ${udev_db} ]]; then
42 # New udev_db is clear text ...
43 udevinfo=$(cat "${udev_db}"/*)
44 else
45 # Old one is not ...
46 udevinfo=$(udevinfo -d)
47 fi
48 # This basically strips 'S:' and 'N:' from the db output, and then
49 # print all the nodes/symlinks udev created ...
50 echo "${udevinfo}" | gawk '
51 /^(N|S):.+/ {
52 sub(/^(N|S):/, "")
53 split($0, nodes)
54 for (x in nodes)
55 print nodes[x]
56 }' > "${devices_udev}"
57 # These ones we also do not want in there
58 for x in MAKEDEV core fd initctl pts shm stderr stdin stdout; do
59 echo "${x}" >> "${devices_udev}"
60 done
61 tarball_devices="$(fgrep -x -v -f "${devices_udev}" < "${devices_real}")"
62 # Now only tarball those not created by udev if we have any
63 if [[ -n ${tarball_devices} ]]; then
64 try tar -jclpf "${device_tarball}" ${tarball_devices}
65 try mv -f "${device_tarball}" /lib/udev-state/devices.tar.bz2
66 try rm -f "${devices_udev}" "${devices_real}"
67 else
68 rm -f /lib/udev-state/devices.tar.bz2
69 fi
70 eend 0
71 fi
72 fi
73
74 # Try to unmount all tmpfs filesystems not in use, else a deadlock may
75 # occure, bug #13599.
76 umount -at tmpfs &>/dev/null
77
78 if [[ -n $(swapon -s 2>/dev/null) ]]; then
79 ebegin "Deactivating swap"
80 swapoff -a
81 eend $?
82 fi
83
84 # Write a reboot record to /var/log/wtmp before unmounting
85
86 halt -w &>/dev/null
87
88 # Unmounting should use /proc/mounts and work with/without devfsd running
89
90 # Credits for next function to unmount loop devices, goes to:
91 #
92 # Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org>
93 # Modified for RHS Linux by Damien Neil
94 #
95 #
96 # Unmount file systems, killing processes if we have to.
97 # Unmount loopback stuff first
98 # Use `umount -d` to detach the loopback device
99
100 # Remove loopback devices started by dm-crypt
101
102 remaining=$(awk '!/^#/ && $1 ~ /^\/dev\/loop/ && $2 != "/" {print $2}' /proc/mounts | \
103 sort -r | grep -v '/newroot' | grep -v '/mnt/livecd')
104 [[ -n ${remaining} ]] && {
105 sig=
106 retry=3
107
108 while [[ -n ${remaining} && ${retry} -gt 0 ]]; do
109 if [[ ${retry} -lt 3 ]]; then
110 ebegin "Unmounting loopback filesystems (retry)"
111 umount -d ${remaining} &>/dev/null
112 eend $? "Failed to unmount filesystems this retry"
113 else
114 ebegin "Unmounting loopback filesystems"
115 umount -d ${remaining} &>/dev/null
116 eend $? "Failed to unmount filesystems"
117 fi
118
119 remaining=$(awk '!/^#/ && $1 ~ /^\/dev\/loop/ && $2 != "/" {print $2}' /proc/mounts | \
120 sort -r | grep -v '/newroot' | grep -v '/mnt/livecd')
121 [[ -z ${remaining} ]] && break
122
123 /bin/fuser -k -m ${sig} ${remaining} &>/dev/null
124 sleep 5
125 retry=$((${retry} - 1))
126 sig=-9
127 done
128 }
129
130 # Try to unmount all filesystems (no /proc,tmpfs,devfs,etc).
131 # This is needed to make sure we dont have a mounted filesystem
132 # on a LVM volume when shutting LVM down ...
133 ebegin "Unmounting filesystems"
134 unmounts=$( \
135 awk '{ \
136 if (($3 !~ /^(proc|devpts|sysfs|devfs|tmpfs|usb(dev)?fs)$/) && \
137 ($1 != "none") && \
138 ($1 !~ /^(rootfs|\/dev\/root)$/) && \
139 ($2 != "/")) \
140 print $2 }' /proc/mounts | sort -ur)
141 for x in ${unmounts}; do
142 # Do not umount these if we are booting off a livecd
143 if [[ -n ${CDBOOT} ]] && \
144 [[ ${x} == "/mnt/cdrom" || ${x} == "/mnt/livecd" ]] ; then
145 continue
146 fi
147
148 x=${x//\\040/ }
149 if ! umount "${x}" &>/dev/null; then
150 # Kill processes still using this mount
151 /bin/fuser -k -m -9 "${x}" &>/dev/null
152 sleep 2
153 # Now try to unmount it again ...
154 umount -f -r "${x}" &>/dev/null
155 fi
156 done
157 eend 0
158
159 # Try to remove any dm-crypt mappings
160 stop_addon dm-crypt
161
162 # Stop LVM, etc
163 stop_volumes
164
165 # This is a function because its used twice below
166 ups_kill_power() {
167 local UPS_CTL UPS_POWERDOWN
168 if [[ -f /etc/killpower ]] ; then
169 UPS_CTL=/sbin/upsdrvctl
170 UPS_POWERDOWN="${UPS_CTL} shutdown"
171 elif [[ -f /etc/apcupsd/powerfail ]] ; then
172 UPS_CTL=/etc/apcupsd/apccontrol
173 UPS_POWERDOWN="${UPS_CTL} killpower"
174 else
175 return 0
176 fi
177 if [[ -x ${UPS_CTL} ]] ; then
178 ewarn "Signalling ups driver(s) to kill the load!"
179 ${UPS_POWERDOWN}
180 ewarn "Halt system and wait for the UPS to kill our power"
181 /sbin/halt -id
182 while [ 1 ]; do sleep 60; done
183 fi
184 }
185
186 mount_readonly() {
187 local x=
188 local retval=0
189 local cmd=$1
190
191 # Get better results with a sync and sleep
192 sync; sync
193 sleep 1
194
195 for x in $(awk '$1 != "none" { print $2 }' /proc/mounts | sort -r) ; do
196 x=${x//\\040/ }
197 if [[ ${cmd} == "u" ]]; then
198 umount -r -r "${x}"
199 else
200 mount -n -o remount,ro "${x}" &>/dev/null
201 fi
202 retval=$((${retval} + $?))
203 done
204 [[ ${retval} -ne 0 ]] && killall5 -9 &>/dev/null
205
206 return ${retval}
207 }
208
209 # Since we use `mount` in mount_readonly(), but we parse /proc/mounts, we
210 # have to make sure our /etc/mtab and /proc/mounts agree
211 cp /proc/mounts /etc/mtab &>/dev/null
212 ebegin "Remounting remaining filesystems readonly"
213 mount_worked=0
214 if ! mount_readonly ; then
215 if ! mount_readonly ; then
216 # If these things really don't want to remount ro, then
217 # let's try to force them to unmount
218 if ! mount_readonly u ; then
219 mount_worked=1
220 fi
221 fi
222 fi
223 eend ${mount_worked}
224 if [[ ${mount_worked} -eq 1 ]]; then
225 ups_kill_power
226 /sbin/sulogin -t 10 /dev/console
227 fi
228
229 # Inform if there is a forced or skipped fsck
230 if [[ -f /fastboot ]]; then
231 echo
232 ewarn "Fsck will be skipped on next startup"
233 elif [[ -f /forcefsck ]]; then
234 echo
235 ewarn "A full fsck will be forced on next startup"
236 fi
237
238 ups_kill_power
239
240
241 # vim:ts=4

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