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594 lines
13 KiB
594 lines
13 KiB
# -*-Shell-script-*- |
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# |
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# functions This file contains functions to be used by most or all |
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# shell scripts in the /etc/init.d directory. |
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# |
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TEXTDOMAIN=initscripts |
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# Make sure umask is sane |
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umask 022 |
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# Set up a default search path. |
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PATH="/sbin:/usr/sbin:/bin:/usr/bin" |
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export PATH |
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if [ $PPID -ne 1 -a -z "$SYSTEMCTL_SKIP_REDIRECT" ] && \ |
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( /bin/mountpoint -q /cgroup/systemd || /bin/mountpoint -q /sys/fs/cgroup/systemd ) ; then |
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case "$0" in |
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/etc/init.d/*|/etc/rc.d/init.d/*) |
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_use_systemctl=1 |
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;; |
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esac |
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fi |
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systemctl_redirect () { |
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local s |
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local prog=${1##*/} |
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local command=$2 |
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local options="" |
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case "$command" in |
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start) |
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s=$"Starting $prog (via systemctl): " |
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;; |
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stop) |
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s=$"Stopping $prog (via systemctl): " |
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;; |
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reload|try-reload) |
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s=$"Reloading $prog configuration (via systemctl): " |
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;; |
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restart|try-restart|condrestart) |
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s=$"Restarting $prog (via systemctl): " |
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;; |
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esac |
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if [ -n "$SYSTEMCTL_IGNORE_DEPENDENCIES" ] ; then |
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options="--ignore-dependencies" |
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fi |
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action "$s" /bin/systemctl $options $command "$prog.service" |
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} |
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# Get a sane screen width |
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[ -z "${COLUMNS:-}" ] && COLUMNS=80 |
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if [ -z "${CONSOLETYPE:-}" ]; then |
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if [ -c "/dev/stderr" -a -r "/dev/stderr" ]; then |
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CONSOLETYPE="$(/sbin/consoletype < /dev/stderr 2>/dev/null)" |
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else |
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CONSOLETYPE="serial" |
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fi |
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fi |
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if [ -z "${NOLOCALE:-}" ] && [ -z "${LANGSH_SOURCED:-}" ] && [ -f /etc/sysconfig/i18n -o -f /etc/locale.conf ] ; then |
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. /etc/profile.d/lang.sh 2>/dev/null |
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# avoid propagating LANGSH_SOURCED any further |
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unset LANGSH_SOURCED |
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fi |
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# Read in our configuration |
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if [ -z "${BOOTUP:-}" ]; then |
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if [ -f /etc/sysconfig/init ]; then |
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. /etc/sysconfig/init |
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else |
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# This all seem confusing? Look in /etc/sysconfig/init, |
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# or in /usr/share/doc/initscripts-*/sysconfig.txt |
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BOOTUP=color |
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RES_COL=60 |
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MOVE_TO_COL="echo -en \\033[${RES_COL}G" |
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SETCOLOR_SUCCESS="echo -en \\033[1;32m" |
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SETCOLOR_FAILURE="echo -en \\033[1;31m" |
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SETCOLOR_WARNING="echo -en \\033[1;33m" |
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SETCOLOR_NORMAL="echo -en \\033[0;39m" |
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LOGLEVEL=1 |
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fi |
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if [ "$CONSOLETYPE" = "serial" ]; then |
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BOOTUP=serial |
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MOVE_TO_COL= |
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SETCOLOR_SUCCESS= |
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SETCOLOR_FAILURE= |
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SETCOLOR_WARNING= |
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SETCOLOR_NORMAL= |
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fi |
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fi |
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# Check if any of $pid (could be plural) are running |
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checkpid() { |
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local i |
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for i in $* ; do |
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[ -d "/proc/$i" ] && return 0 |
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done |
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return 1 |
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} |
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# __proc_pids {program} [pidfile] |
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# Set $pid to pids from /var/run* for {program}. $pid should be declared |
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# local in the caller. |
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# Returns LSB exit code for the 'status' action. |
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__pids_var_run() { |
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local base=${1##*/} |
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local pid_file=${2:-/var/run/$base.pid} |
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pid= |
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if [ -f "$pid_file" ] ; then |
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local line p |
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[ ! -r "$pid_file" ] && return 4 # "user had insufficient privilege" |
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while : ; do |
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read line |
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[ -z "$line" ] && break |
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for p in $line ; do |
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[ -z "${p//[0-9]/}" ] && [ -d "/proc/$p" ] && pid="$pid $p" |
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done |
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done < "$pid_file" |
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if [ -n "$pid" ]; then |
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return 0 |
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fi |
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return 1 # "Program is dead and /var/run pid file exists" |
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fi |
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return 3 # "Program is not running" |
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} |
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# Output PIDs of matching processes, found using pidof |
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__pids_pidof() { |
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pidof -c -m -o $$ -o $PPID -o %PPID -x "$1" || \ |
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pidof -c -m -o $$ -o $PPID -o %PPID -x "${1##*/}" |
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} |
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# A function to start a program. |
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daemon() { |
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# Test syntax. |
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local gotbase= force= nicelevel corelimit |
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local pid base= user= nice= bg= pid_file= |
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local cgroup= |
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nicelevel=0 |
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while [ "$1" != "${1##[-+]}" ]; do |
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case $1 in |
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'') echo $"$0: Usage: daemon [+/-nicelevel] {program}" |
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return 1;; |
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--check) |
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base=$2 |
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gotbase="yes" |
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shift 2 |
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;; |
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--check=?*) |
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base=${1#--check=} |
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gotbase="yes" |
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shift |
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;; |
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--user) |
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user=$2 |
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shift 2 |
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;; |
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--user=?*) |
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user=${1#--user=} |
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shift |
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;; |
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--pidfile) |
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pid_file=$2 |
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shift 2 |
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;; |
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--pidfile=?*) |
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pid_file=${1#--pidfile=} |
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shift |
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;; |
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--force) |
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force="force" |
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shift |
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;; |
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[-+][0-9]*) |
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nice="nice -n $1" |
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shift |
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;; |
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*) echo $"$0: Usage: daemon [+/-nicelevel] {program}" |
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return 1;; |
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esac |
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done |
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# Save basename. |
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[ -z "$gotbase" ] && base=${1##*/} |
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# See if it's already running. Look *only* at the pid file. |
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__pids_var_run "$base" "$pid_file" |
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[ -n "$pid" -a -z "$force" ] && return |
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# make sure it doesn't core dump anywhere unless requested |
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corelimit="ulimit -S -c ${DAEMON_COREFILE_LIMIT:-0}" |
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# if they set NICELEVEL in /etc/sysconfig/foo, honor it |
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[ -n "${NICELEVEL:-}" ] && nice="nice -n $NICELEVEL" |
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# if they set CGROUP_DAEMON in /etc/sysconfig/foo, honor it |
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if [ -n "${CGROUP_DAEMON}" ]; then |
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if [ ! -x /bin/cgexec ]; then |
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echo -n "Cgroups not installed"; warning |
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echo |
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else |
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cgroup="/bin/cgexec"; |
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for i in $CGROUP_DAEMON; do |
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cgroup="$cgroup -g $i"; |
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done |
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fi |
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fi |
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# Echo daemon |
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[ "${BOOTUP:-}" = "verbose" -a -z "${LSB:-}" ] && echo -n " $base" |
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# And start it up. |
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if [ -z "$user" ]; then |
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$cgroup $nice /bin/bash -c "$corelimit >/dev/null 2>&1 ; $*" |
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else |
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$cgroup $nice runuser -s /bin/bash $user -c "$corelimit >/dev/null 2>&1 ; $*" |
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fi |
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[ "$?" -eq 0 ] && success $"$base startup" || failure $"$base startup" |
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} |
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# A function to stop a program. |
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killproc() { |
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local RC killlevel= base pid pid_file= delay try |
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RC=0; delay=3; try=0 |
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# Test syntax. |
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if [ "$#" -eq 0 ]; then |
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echo $"Usage: killproc [-p pidfile] [ -d delay] {program} [-signal]" |
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return 1 |
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fi |
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if [ "$1" = "-p" ]; then |
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pid_file=$2 |
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shift 2 |
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fi |
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if [ "$1" = "-d" ]; then |
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delay=$(echo $2 | awk -v RS=' ' -v IGNORECASE=1 '{if($1!~/^[0-9.]+[smhd]?$/) exit 1;d=$1~/s$|^[0-9.]*$/?1:$1~/m$/?60:$1~/h$/?60*60:$1~/d$/?24*60*60:-1;if(d==-1) exit 1;delay+=d*$1} END {printf("%d",delay+0.5)}') |
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if [ "$?" -eq 1 ]; then |
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echo $"Usage: killproc [-p pidfile] [ -d delay] {program} [-signal]" |
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return 1 |
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fi |
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shift 2 |
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fi |
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# check for second arg to be kill level |
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[ -n "${2:-}" ] && killlevel=$2 |
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# Save basename. |
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base=${1##*/} |
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# Find pid. |
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__pids_var_run "$1" "$pid_file" |
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RC=$? |
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if [ -z "$pid" ]; then |
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if [ -z "$pid_file" ]; then |
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pid="$(__pids_pidof "$1")" |
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else |
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[ "$RC" = "4" ] && { failure $"$base shutdown" ; return $RC ;} |
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fi |
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fi |
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# Kill it. |
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if [ -n "$pid" ] ; then |
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[ "$BOOTUP" = "verbose" -a -z "${LSB:-}" ] && echo -n "$base " |
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if [ -z "$killlevel" ] ; then |
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if checkpid $pid 2>&1; then |
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# TERM first, then KILL if not dead |
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kill -TERM $pid >/dev/null 2>&1 |
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usleep 50000 |
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if checkpid $pid ; then |
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try=0 |
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while [ $try -lt $delay ] ; do |
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checkpid $pid || break |
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sleep 1 |
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let try+=1 |
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done |
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if checkpid $pid ; then |
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kill -KILL $pid >/dev/null 2>&1 |
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usleep 50000 |
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fi |
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fi |
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fi |
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checkpid $pid |
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RC=$? |
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[ "$RC" -eq 0 ] && failure $"$base shutdown" || success $"$base shutdown" |
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RC=$((! $RC)) |
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# use specified level only |
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else |
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if checkpid $pid; then |
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kill $killlevel $pid >/dev/null 2>&1 |
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RC=$? |
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[ "$RC" -eq 0 ] && success $"$base $killlevel" || failure $"$base $killlevel" |
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elif [ -n "${LSB:-}" ]; then |
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RC=7 # Program is not running |
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fi |
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fi |
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else |
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if [ -n "${LSB:-}" -a -n "$killlevel" ]; then |
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RC=7 # Program is not running |
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else |
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failure $"$base shutdown" |
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RC=0 |
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fi |
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fi |
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# Remove pid file if any. |
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if [ -z "$killlevel" ]; then |
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rm -f "${pid_file:-/var/run/$base.pid}" |
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fi |
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return $RC |
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} |
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# A function to find the pid of a program. Looks *only* at the pidfile |
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pidfileofproc() { |
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local pid |
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# Test syntax. |
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if [ "$#" = 0 ] ; then |
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echo $"Usage: pidfileofproc {program}" |
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return 1 |
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fi |
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__pids_var_run "$1" |
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[ -n "$pid" ] && echo $pid |
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return 0 |
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} |
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# A function to find the pid of a program. |
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pidofproc() { |
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local RC pid pid_file= |
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# Test syntax. |
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if [ "$#" = 0 ]; then |
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echo $"Usage: pidofproc [-p pidfile] {program}" |
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return 1 |
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fi |
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if [ "$1" = "-p" ]; then |
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pid_file=$2 |
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shift 2 |
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fi |
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fail_code=3 # "Program is not running" |
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# First try "/var/run/*.pid" files |
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__pids_var_run "$1" "$pid_file" |
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RC=$? |
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if [ -n "$pid" ]; then |
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echo $pid |
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return 0 |
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fi |
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[ -n "$pid_file" ] && return $RC |
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__pids_pidof "$1" || return $RC |
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} |
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status() { |
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local base pid lock_file= pid_file= |
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# Test syntax. |
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if [ "$#" = 0 ] ; then |
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echo $"Usage: status [-p pidfile] {program}" |
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return 1 |
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fi |
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if [ "$1" = "-p" ]; then |
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pid_file=$2 |
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shift 2 |
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fi |
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if [ "$1" = "-l" ]; then |
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lock_file=$2 |
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shift 2 |
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fi |
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base=${1##*/} |
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if [ "$_use_systemctl" = "1" ]; then |
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systemctl status ${0##*/}.service |
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return $? |
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fi |
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# First try "pidof" |
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__pids_var_run "$1" "$pid_file" |
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RC=$? |
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if [ -z "$pid_file" -a -z "$pid" ]; then |
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pid="$(__pids_pidof "$1")" |
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fi |
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if [ -n "$pid" ]; then |
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echo $"${base} (pid $pid) is running..." |
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return 0 |
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fi |
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case "$RC" in |
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0) |
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echo $"${base} (pid $pid) is running..." |
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return 0 |
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;; |
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1) |
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echo $"${base} dead but pid file exists" |
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return 1 |
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;; |
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4) |
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echo $"${base} status unknown due to insufficient privileges." |
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return 4 |
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;; |
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esac |
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if [ -z "${lock_file}" ]; then |
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lock_file=${base} |
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fi |
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# See if /var/lock/subsys/${lock_file} exists |
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if [ -f /var/lock/subsys/${lock_file} ]; then |
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echo $"${base} dead but subsys locked" |
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return 2 |
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fi |
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echo $"${base} is stopped" |
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return 3 |
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} |
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echo_success() { |
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[ "$BOOTUP" = "color" ] && $MOVE_TO_COL |
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echo -n "[" |
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[ "$BOOTUP" = "color" ] && $SETCOLOR_SUCCESS |
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echo -n $" OK " |
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[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL |
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echo -n "]" |
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echo -ne "\r" |
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return 0 |
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} |
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echo_failure() { |
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[ "$BOOTUP" = "color" ] && $MOVE_TO_COL |
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echo -n "[" |
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[ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE |
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echo -n $"FAILED" |
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[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL |
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echo -n "]" |
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echo -ne "\r" |
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return 1 |
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} |
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echo_passed() { |
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[ "$BOOTUP" = "color" ] && $MOVE_TO_COL |
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echo -n "[" |
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[ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING |
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echo -n $"PASSED" |
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[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL |
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echo -n "]" |
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echo -ne "\r" |
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return 1 |
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} |
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echo_warning() { |
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[ "$BOOTUP" = "color" ] && $MOVE_TO_COL |
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echo -n "[" |
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[ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING |
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echo -n $"WARNING" |
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[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL |
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echo -n "]" |
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echo -ne "\r" |
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return 1 |
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} |
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# Inform the graphical boot of our current state |
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update_boot_stage() { |
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if [ -x /bin/plymouth ]; then |
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/bin/plymouth --update="$1" |
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fi |
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return 0 |
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} |
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# Log that something succeeded |
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success() { |
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[ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_success |
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return 0 |
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} |
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# Log that something failed |
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failure() { |
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local rc=$? |
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[ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_failure |
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[ -x /bin/plymouth ] && /bin/plymouth --details |
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return $rc |
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} |
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# Log that something passed, but may have had errors. Useful for fsck |
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passed() { |
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local rc=$? |
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[ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_passed |
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return $rc |
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} |
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# Log a warning |
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warning() { |
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local rc=$? |
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[ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_warning |
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return $rc |
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} |
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# Run some action. Log its output. |
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action() { |
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local STRING rc |
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STRING=$1 |
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echo -n "$STRING " |
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shift |
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"$@" && success $"$STRING" || failure $"$STRING" |
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rc=$? |
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echo |
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return $rc |
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} |
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# returns OK if $1 contains $2 |
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strstr() { |
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[ "${1#*$2*}" = "$1" ] && return 1 |
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return 0 |
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} |
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# Check whether file $1 is a backup or rpm-generated file and should be ignored |
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is_ignored_file() { |
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case "$1" in |
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*~ | *.bak | *.orig | *.rpmnew | *.rpmorig | *.rpmsave) |
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return 0 |
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;; |
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esac |
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return 1 |
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} |
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# Evaluate shvar-style booleans |
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is_true() { |
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case "$1" in |
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[tT] | [yY] | [yY][eE][sS] | [tT][rR][uU][eE]) |
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return 0 |
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;; |
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esac |
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return 1 |
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} |
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# Evaluate shvar-style booleans |
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is_false() { |
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case "$1" in |
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[fF] | [nN] | [nN][oO] | [fF][aA][lL][sS][eE]) |
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return 0 |
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;; |
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esac |
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return 1 |
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} |
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# Apply sysctl settings, including files in /etc/sysctl.d |
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apply_sysctl() { |
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if [ -x /lib/systemd/systemd-sysctl ]; then |
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/lib/systemd/systemd-sysctl |
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else |
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for file in /usr/lib/sysctl.d/*.conf ; do |
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is_ignored_file "$file" && continue |
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[ -f /run/sysctl.d/${file##*/} ] && continue |
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[ -f /etc/sysctl.d/${file##*/} ] && continue |
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test -f "$file" && sysctl -e -p "$file" >/dev/null 2>&1 |
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done |
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for file in /run/sysctl.d/*.conf ; do |
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is_ignored_file "$file" && continue |
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[ -f /etc/sysctl.d/${file##*/} ] && continue |
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test -f "$file" && sysctl -e -p "$file" >/dev/null 2>&1 |
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done |
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for file in /etc/sysctl.d/*.conf ; do |
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is_ignored_file "$file" && continue |
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test -f "$file" && sysctl -e -p "$file" >/dev/null 2>&1 |
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done |
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sysctl -e -p /etc/sysctl.conf >/dev/null 2>&1 |
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fi |
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} |
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# A sed expression to filter out the files that is_ignored_file recognizes |
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__sed_discard_ignored_files='/\(~\|\.bak\|\.orig\|\.rpmnew\|\.rpmorig\|\.rpmsave\)$/d' |
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if [ "$_use_systemctl" = "1" ]; then |
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if [ "x$1" = xstart -o \ |
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"x$1" = xstop -o \ |
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"x$1" = xrestart -o \ |
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"x$1" = xreload -o \ |
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"x$1" = xtry-restart -o \ |
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"x$1" = xforce-reload -o \ |
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"x$1" = xcondrestart ] ; then |
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systemctl_redirect $0 $1 |
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exit $? |
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fi |
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fi
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