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- # -*-Shell-script-*-
- #
- # functions This file contains functions to be used by most or all
- # shell scripts in the /etc/init.d directory.
- #
- TEXTDOMAIN=initscripts
- # Make sure umask is sane
- umask 022
- # Set up a default search path.
- PATH="/sbin:/usr/sbin:/bin:/usr/bin"
- export PATH
- # Get a sane screen width
- [ -z "${COLUMNS:-}" ] && COLUMNS=80
- [ -z "${CONSOLETYPE:-}" ] && CONSOLETYPE="`/sbin/consoletype`"
- if [ -f /etc/sysconfig/i18n -a -z "${NOLOCALE:-}" -a -z "${LANGSH_SOURCED:-}" ] ; then
- . /etc/profile.d/lang.sh 2>/dev/null
- # avoid propagating LANGSH_SOURCED any further
- unset LANGSH_SOURCED
- fi
- # Read in our configuration
- if [ -z "${BOOTUP:-}" ]; then
- if [ -f /etc/sysconfig/init ]; then
- . /etc/sysconfig/init
- else
- # This all seem confusing? Look in /etc/sysconfig/init,
- # or in /usr/doc/initscripts-*/sysconfig.txt
- BOOTUP=color
- RES_COL=60
- MOVE_TO_COL="echo -en \\033[${RES_COL}G"
- SETCOLOR_SUCCESS="echo -en \\033[1;32m"
- SETCOLOR_FAILURE="echo -en \\033[1;31m"
- SETCOLOR_WARNING="echo -en \\033[1;33m"
- SETCOLOR_NORMAL="echo -en \\033[0;39m"
- LOGLEVEL=1
- fi
- if [ "$CONSOLETYPE" = "serial" ]; then
- BOOTUP=serial
- MOVE_TO_COL=
- SETCOLOR_SUCCESS=
- SETCOLOR_FAILURE=
- SETCOLOR_WARNING=
- SETCOLOR_NORMAL=
- fi
- fi
- # Interpret escape sequences in an fstab entry
- fstab_decode_str() {
- fstab-decode echo "$1"
- }
- # Check if $pid (could be plural) are running
- checkpid() {
- local i
- for i in $* ; do
- [ -d "/proc/$i" ] && return 0
- done
- return 1
- }
- __readlink() {
- ls -bl "$@" 2>/dev/null| awk '{ print $NF }'
- }
- __fgrep() {
- s=$1
- f=$2
- while read line; do
- if strstr "$line" "$s"; then
- echo $line
- return 0
- fi
- done < $f
- return 1
- }
- # __umount_loop awk_program fstab_file first_msg retry_msg umount_args
- # awk_program should process fstab_file and return a list of fstab-encoded
- # paths; it doesn't have to handle comments in fstab_file.
- __umount_loop() {
- local remaining sig=
- local retry=3 count
- remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r)
- while [ -n "$remaining" -a "$retry" -gt 0 ]; do
- if [ "$retry" -eq 3 ]; then
- action "$3" fstab-decode umount $5 $remaining
- else
- action "$4" fstab-decode umount $5 $remaining
- fi
- count=4
- remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r)
- while [ "$count" -gt 0 ]; do
- [ -z "$remaining" ] && break
- count=$(($count-1))
- usleep 500000
- remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r)
- done
- [ -z "$remaining" ] && break
- fstab-decode /sbin/fuser -k -m $sig $remaining >/dev/null
- sleep 3
- retry=$(($retry -1))
- sig=-9
- done
- }
- # Similar to __umount loop above, specialized for loopback devices
- __umount_loopback_loop() {
- local remaining devremaining sig=
- local retry=3
- remaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" {print $2}' /proc/mounts)
- devremaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" {print $1}' /proc/mounts)
- while [ -n "$remaining" -a "$retry" -gt 0 ]; do
- if [ "$retry" -eq 3 ]; then
- action $"Unmounting loopback filesystems: " \
- fstab-decode umount $remaining
- else
- action $"Unmounting loopback filesystems (retry):" \
- fstab-decode umount $remaining
- fi
- for dev in $devremaining ; do
- losetup $dev > /dev/null 2>&1 && \
- action $"Detaching loopback device $dev: " \
- losetup -d $dev
- done
- remaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" {print $2}' /proc/mounts)
- devremaining=$(awk '$1 ~ /^\/dev\/loop/ && $2 != "/" {print $1}' /proc/mounts)
- [ -z "$remaining" ] && break
- fstab-decode /sbin/fuser -k -m $sig $remaining >/dev/null
- sleep 3
- retry=$(($retry -1))
- sig=-9
- done
- }
- # __proc_pids {program} [pidfile]
- # Set $pid to pids from /var/run* for {program}. $pid should be declared
- # local in the caller.
- # Returns LSB exit code for the 'status' action.
- __pids_var_run() {
- local base=${1##*/}
- local pid_file=${2:-/var/run/$base.pid}
- pid=
- if [ -f "$pid_file" ] ; then
- local line p
- while : ; do
- read line
- [ -z "$line" ] && break
- for p in $line ; do
- [ -z "${p//[0-9]/}" -a -d "/proc/$p" ] && pid="$pid $p"
- done
- done < "$pid_file"
- if [ -n "$pid" ]; then
- return 0
- fi
- return 1 # "Program is dead and /var/run pid file exists"
- fi
- return 3 # "Program is not running"
- }
- # Output PIDs of matching processes, found using pidof
- __pids_pidof() {
- pidof -c -o $$ -o $PPID -o %PPID -x "$1" || \
- pidof -c -o $$ -o $PPID -o %PPID -x "${1##*/}"
- }
- # A function to start a program.
- daemon() {
- # Test syntax.
- local gotbase= force= nicelevel corelimit
- local pid base= user= nice= bg= pid_file=
- local cgroup=
- nicelevel=0
- while [ "$1" != "${1##[-+]}" ]; do
- case $1 in
- '') echo $"$0: Usage: daemon [+/-nicelevel] {program}"
- return 1;;
- --check)
- base=$2
- gotbase="yes"
- shift 2
- ;;
- --check=?*)
- base=${1#--check=}
- gotbase="yes"
- shift
- ;;
- --user)
- user=$2
- shift 2
- ;;
- --user=?*)
- user=${1#--user=}
- shift
- ;;
- --pidfile)
- pid_file=$2
- shift 2
- ;;
- --pidfile=?*)
- pid_file=${1#--pidfile=}
- shift
- ;;
- --force)
- force="force"
- shift
- ;;
- [-+][0-9]*)
- nice="nice -n $1"
- shift
- ;;
- *) echo $"$0: Usage: daemon [+/-nicelevel] {program}"
- return 1;;
- esac
- done
- # Save basename.
- [ -z "$gotbase" ] && base=${1##*/}
- # See if it's already running. Look *only* at the pid file.
- __pids_var_run "$base" "$pid_file"
- [ -n "$pid" -a -z "$force" ] && return
- # make sure it doesn't core dump anywhere unless requested
- corelimit="ulimit -S -c ${DAEMON_COREFILE_LIMIT:-0}"
- # if they set NICELEVEL in /etc/sysconfig/foo, honor it
- [ -n "${NICELEVEL:-}" ] && nice="nice -n $NICELEVEL"
- # if they set CGROUP_DAEMON in /etc/sysconfig/foo, honor it
- if [ -n "${CGROUP_DAEMON}" ]; then
- if [ ! -x /bin/cgexec ]; then
- echo -n "Cgroups not installed"; warning
- echo
- else
- cgroup="/bin/cgexec";
- for i in $CGROUP_DAEMON; do
- cgroup="$cgroup -g $i";
- done
- fi
- fi
- # Echo daemon
- [ "${BOOTUP:-}" = "verbose" -a -z "${LSB:-}" ] && echo -n " $base"
- # And start it up.
- if [ -z "$user" ]; then
- $cgroup $nice /bin/bash -c "$corelimit >/dev/null 2>&1 ; $*"
- else
- $cgroup $nice runuser -s /bin/bash - $user -c "$corelimit >/dev/null 2>&1 ; $*"
- fi
- [ "$?" -eq 0 ] && success $"$base startup" || failure $"$base startup"
- }
- # A function to stop a program.
- killproc() {
- local RC killlevel= base pid pid_file= delay
- RC=0; delay=3
- # Test syntax.
- if [ "$#" -eq 0 ]; then
- echo $"Usage: killproc [-p pidfile] [ -d delay] {program} [-signal]"
- return 1
- fi
- if [ "$1" = "-p" ]; then
- pid_file=$2
- shift 2
- fi
- if [ "$1" = "-d" ]; then
- delay=$2
- shift 2
- fi
- # check for second arg to be kill level
- [ -n "${2:-}" ] && killlevel=$2
- # Save basename.
- base=${1##*/}
- # Find pid.
- __pids_var_run "$1" "$pid_file"
- if [ -z "$pid_file" -a -z "$pid" ]; then
- pid="$(__pids_pidof "$1")"
- fi
- # Kill it.
- if [ -n "$pid" ] ; then
- [ "$BOOTUP" = "verbose" -a -z "${LSB:-}" ] && echo -n "$base "
- if [ -z "$killlevel" ] ; then
- if checkpid $pid 2>&1; then
- # TERM first, then KILL if not dead
- kill -TERM $pid >/dev/null 2>&1
- usleep 100000
- if checkpid $pid && sleep 1 &&
- checkpid $pid && sleep $delay &&
- checkpid $pid ; then
- kill -KILL $pid >/dev/null 2>&1
- usleep 100000
- fi
- fi
- checkpid $pid
- RC=$?
- [ "$RC" -eq 0 ] && failure $"$base shutdown" || success $"$base shutdown"
- RC=$((! $RC))
- # use specified level only
- else
- if checkpid $pid; then
- kill $killlevel $pid >/dev/null 2>&1
- RC=$?
- [ "$RC" -eq 0 ] && success $"$base $killlevel" || failure $"$base $killlevel"
- elif [ -n "${LSB:-}" ]; then
- RC=7 # Program is not running
- fi
- fi
- else
- if [ -n "${LSB:-}" -a -n "$killlevel" ]; then
- RC=7 # Program is not running
- else
- failure $"$base shutdown"
- RC=0
- fi
- fi
- # Remove pid file if any.
- if [ -z "$killlevel" ]; then
- rm -f "${pid_file:-/var/run/$base.pid}"
- fi
- return $RC
- }
- # A function to find the pid of a program. Looks *only* at the pidfile
- pidfileofproc() {
- local pid
- # Test syntax.
- if [ "$#" = 0 ] ; then
- echo $"Usage: pidfileofproc {program}"
- return 1
- fi
- __pids_var_run "$1"
- [ -n "$pid" ] && echo $pid
- return 0
- }
- # A function to find the pid of a program.
- pidofproc() {
- local RC pid pid_file=
- # Test syntax.
- if [ "$#" = 0 ]; then
- echo $"Usage: pidofproc [-p pidfile] {program}"
- return 1
- fi
- if [ "$1" = "-p" ]; then
- pid_file=$2
- shift 2
- fi
- fail_code=3 # "Program is not running"
- # First try "/var/run/*.pid" files
- __pids_var_run "$1" "$pid_file"
- RC=$?
- if [ -n "$pid" ]; then
- echo $pid
- return 0
- fi
- [ -n "$pid_file" ] && return $RC
- __pids_pidof "$1" || return $RC
- }
- status() {
- local base pid pid_file=
- # Test syntax.
- if [ "$#" = 0 ] ; then
- echo $"Usage: status [-p pidfile] {program}"
- return 1
- fi
- if [ "$1" = "-p" ]; then
- pid_file=$2
- shift 2
- fi
- base=${1##*/}
- # First try "pidof"
- __pids_var_run "$1" "$pid_file"
- RC=$?
- if [ -z "$pid_file" -a -z "$pid" ]; then
- pid="$(__pids_pidof "$1")"
- fi
- if [ -n "$pid" ]; then
- echo $"${base} (pid $pid) is running..."
- return 0
- fi
- case "$RC" in
- 0)
- echo $"${base} (pid $pid) is running..."
- return 0
- ;;
- 1)
- echo $"${base} dead but pid file exists"
- return 1
- ;;
- esac
- # See if /var/lock/subsys/${base} exists
- if [ -f /var/lock/subsys/${base} ]; then
- echo $"${base} dead but subsys locked"
- return 2
- fi
- echo $"${base} is stopped"
- return 3
- }
- echo_success() {
- [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
- echo -n "["
- [ "$BOOTUP" = "color" ] && $SETCOLOR_SUCCESS
- echo -n $" OK "
- [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
- echo -n "]"
- echo -ne "\r"
- return 0
- }
- echo_failure() {
- [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
- echo -n "["
- [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
- echo -n $"FAILED"
- [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
- echo -n "]"
- echo -ne "\r"
- return 1
- }
- echo_passed() {
- [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
- echo -n "["
- [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
- echo -n $"PASSED"
- [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
- echo -n "]"
- echo -ne "\r"
- return 1
- }
- echo_warning() {
- [ "$BOOTUP" = "color" ] && $MOVE_TO_COL
- echo -n "["
- [ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
- echo -n $"WARNING"
- [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
- echo -n "]"
- echo -ne "\r"
- return 1
- }
- # Inform the graphical boot of our current state
- update_boot_stage() {
- if [ -x /usr/bin/plymouth ]; then
- /usr/bin/plymouth --update="$1"
- fi
- return 0
- }
- # Log that something succeeded
- success() {
- [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_success
- return 0
- }
- # Log that something failed
- failure() {
- local rc=$?
- [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_failure
- [ -x /usr/bin/plymouth ] && /usr/bin/plymouth --details
- return $rc
- }
- # Log that something passed, but may have had errors. Useful for fsck
- passed() {
- local rc=$?
- [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_passed
- return $rc
- }
- # Log a warning
- warning() {
- local rc=$?
- [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_warning
- return $rc
- }
- # Run some action. Log its output.
- action() {
- local STRING rc
- STRING=$1
- echo -n "$STRING "
- shift
- "$@" && success $"$STRING" || failure $"$STRING"
- rc=$?
- echo
- return $rc
- }
- # returns OK if $1 contains $2
- strstr() {
- [ "${1#*$2*}" = "$1" ] && return 1
- return 0
- }
- # Confirm whether we really want to run this service
- confirm() {
- [ -x /usr/bin/plymouth ] && /usr/bin/plymouth --hide-splash
- while : ; do
- echo -n $"Start service $1 (Y)es/(N)o/(C)ontinue? [Y] "
- read answer
- if strstr $"yY" "$answer" || [ "$answer" = "" ] ; then
- return 0
- elif strstr $"cC" "$answer" ; then
- rm -f /var/run/confirm
- [ -x /usr/bin/plymouth ] && /usr/bin/plymouth --show-splash
- return 2
- elif strstr $"nN" "$answer" ; then
- return 1
- fi
- done
- }
- # resolve a device node to its major:minor numbers in decimal or hex
- get_numeric_dev() {
- (
- fmt="%d:%d"
- if [ "$1" == "hex" ]; then
- fmt="%x:%x"
- fi
- ls -lH "$2" | awk '{ sub(/,/, "", $5); printf("'"$fmt"'", $5, $6); }'
- ) 2>/dev/null
- }
- # Check whether file $1 is a backup or rpm-generated file and should be ignored
- is_ignored_file() {
- case "$1" in
- *~ | *.bak | *.orig | *.rpmnew | *.rpmorig | *.rpmsave)
- return 0
- ;;
- esac
- return 1
- }
- # A sed expression to filter out the files that is_ignored_file recognizes
- __sed_discard_ignored_files='/\(~\|\.bak\|\.orig\|\.rpmnew\|\.rpmorig\|\.rpmsave\)$/d'
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