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Personal Computer World 2009 February
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usr
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lib
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pm-utils
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bin
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pm-action
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2008-10-15
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99 lines
#!/bin/sh
# vim: noexpandtab
# Simple suspend script
#
# Copyright 2006 Red Hat, Inc.
#
# Based on work from:
# Bill Nottingham <notting@redhat.com>
# Peter Jones <pjones@redhat.com>
# David Zeuthen <davidz@redhat.com>
# Richard Hughes <richard@hughsie.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# The rule here? Simplicity.
. "/usr/lib/pm-utils/pm-functions"
help()
{
echo "${0##*/} [options]"
echo
echo "Options can change how suspend or hibernate is done."
run_hooks sleep help
command_exists sleep_method_help && sleep_method_help
exit 0
}
if [ "$(id -u)" != "0" ]; then
echo This utility may only be run by the root user. 1>&2
exit 1
fi
take_suspend_lock || exit 1
# make sure we release the lock no matter how we exit
trap remove_suspend_lock 0
while [ $# -gt 0 ]
do
[ "$1" = "--help" ] && help
shift
done
METHOD="$(echo ${0##*pm-} |tr - _)"
command_exists "check_$METHOD" && command_exists "do_$METHOD" || {
log "pm-utils does not know how to $METHOD on this system."
exit 1
}
"check_$METHOD" || {
log "This system does not support $METHOD as a sleep method."
exit 1
}
case "$METHOD" in
suspend*) ACTION=suspend; REVERSE=resume ;;
hibernate) ACTION=hibernate; REVERSE=thaw ;;
*) echo "Cannot happen. Please file a bug against pm-utils."
exit 1 ;;
esac
init_logfile "${PM_LOGFILE}"
log "Initial commandline parameters: $PM_CMDLINE"
load_hook_blacklist
load_hook_parameters
# Make sure we are not inhibited before we start.
rm -f "${INHIBIT}"
# run the sleep hooks
log "$(date): Running hooks for $ACTION."
run_hooks sleep "$ACTION"
# Sleep only if we know how and if a hook did not inhibit us.
if [ ! -e "$INHIBIT" ]; then
log "$(date): performing $METHOD"
sync
"do_$METHOD"
log "$(date): Awake."
else
log "$(date): Inhibit found, will not perform $METHOD"
fi
log "$(date): Running hooks for $REVERSE"
# run the sleep hooks in reverse with the wakeup action
run_hooks sleep "$REVERSE" reverse
log "$(date): Finished."