diff options
Diffstat (limited to 'etc/rc.d/init.d/functions')
| -rw-r--r-- | etc/rc.d/init.d/functions | 721 |
1 files changed, 721 insertions, 0 deletions
diff --git a/etc/rc.d/init.d/functions b/etc/rc.d/init.d/functions new file mode 100644 index 00000000..a8174751 --- /dev/null +++ b/etc/rc.d/init.d/functions @@ -0,0 +1,721 @@ +# -*-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 + +if [ $PPID -ne 1 -a -z "$SYSTEMCTL_SKIP_REDIRECT" ] && \ + [ -d /run/systemd/system ] ; then + case "$0" in + /etc/init.d/*|/etc/rc.d/init.d/*) + _use_systemctl=1 + ;; + esac +fi + +systemctl_redirect () { + local s + local prog=${1##*/} + local command=$2 + local options="" + + case "$command" in + start) + s=$"Starting $prog (via systemctl): " + ;; + stop) + s=$"Stopping $prog (via systemctl): " + ;; + reload|try-reload) + s=$"Reloading $prog configuration (via systemctl): " + ;; + restart|try-restart|condrestart) + s=$"Restarting $prog (via systemctl): " + ;; + esac + + if [ -n "$SYSTEMCTL_IGNORE_DEPENDENCIES" ] ; then + options="--ignore-dependencies" + fi + + if ! systemctl show "$prog.service" > /dev/null 2>&1 || \ + systemctl show -p LoadState "$prog.service" | grep -q 'not-found' ; then + action $"Reloading systemd: " /bin/systemctl daemon-reload + fi + + action "$s" /bin/systemctl $options $command "$prog.service" +} + +# Get a sane screen width +[ -z "${COLUMNS:-}" ] && COLUMNS=80 + +if [ -z "${CONSOLETYPE:-}" ]; then + if [ -c "/dev/stderr" ] && [ -r "/dev/stderr" ]; then + CONSOLETYPE="$(/sbin/consoletype < /dev/stderr 2>/dev/null)" + else + CONSOLETYPE="serial" + fi +fi + +if [ -z "${NOLOCALE:-}" ] && [ -z "${LANGSH_SOURCED:-}" ] && \ + [ -f /etc/sysconfig/i18n -o -f /etc/locale.conf ] ; then + . /etc/profile.d/lang.sh 2>/dev/null + # avoid propagating LANGSH_SOURCED any further + unset LANGSH_SOURCED +fi + +# Read in our configuration +if [ -z "${BOOTUP:-}" ]; then + if [ -f /etc/sysconfig/init ]; then + . /etc/sysconfig/init + else + # verbose ->> very (very!) old bootup look (prior to RHL-6.0?) + # color ->> default bootup look + # other ->> default bootup look without ANSI colors or positioning + BOOTUP=color + # Column to start "[ OK ]" label in: + RES_COL=60 + # terminal sequence to move to that column: + MOVE_TO_COL="echo -en \\033[${RES_COL}G" + # Terminal sequence to set color to a 'success' (bright green): + SETCOLOR_SUCCESS="echo -en \\033[1;32m" + # Terminal sequence to set color to a 'failure' (bright red): + SETCOLOR_FAILURE="echo -en \\033[1;31m" + # Terminal sequence to set color to a 'warning' (bright yellow): + SETCOLOR_WARNING="echo -en \\033[1;33m" + # Terminal sequence to reset to the default color: + SETCOLOR_NORMAL="echo -en \\033[0;39m" + + # Verbosity of logging: + LOGLEVEL=1 + fi + if [ "$CONSOLETYPE" = "serial" ]; then + BOOTUP=serial + MOVE_TO_COL= + SETCOLOR_SUCCESS= + SETCOLOR_FAILURE= + SETCOLOR_WARNING= + SETCOLOR_NORMAL= + fi +fi + +# Check if any of $pid (could be plural) are running +checkpid() { + local i + + for i in $* ; do + [ -d "/proc/$i" ] && return 0 + done + return 1 +} + +__kill_pids_term_kill_checkpids() { + local base_stime=$1 + shift 1 + local pid= + local pids=$* + local remaining= + local stat= + local stime= + + for pid in $pids ; do + [ ! -e "/proc/$pid" ] && continue + read -r line < "/proc/$pid/stat" 2> /dev/null + + stat=($line) + stime=${stat[21]} + + [ -n "$stime" ] && [ "$base_stime" -lt "$stime" ] && continue + remaining+="$pid " + done + + echo "$remaining" + [ -n "$remaining" ] && return 1 + + return 0 +} + +__kill_pids_term_kill() { + local try=0 + local delay=3; + local pid= + local stat= + local base_stime= + + # We can't initialize stat & base_stime on the same line where 'local' + # keyword is, otherwise the sourcing of this file will fail for ksh... + stat=($(< /proc/self/stat)) + base_stime=${stat[21]} + + if [ "$1" = "-d" ]; then + delay=$2 + shift 2 + fi + + local kill_list=$* + + kill_list=$(__kill_pids_term_kill_checkpids $base_stime $kill_list) + + [ -z "$kill_list" ] && return 0 + + kill -TERM $kill_list >/dev/null 2>&1 + sleep 0.1 + + kill_list=$(__kill_pids_term_kill_checkpids $base_stime $kill_list) + if [ -n "$kill_list" ] ; then + while [ $try -lt $delay ] ; do + sleep 1 + kill_list=$(__kill_pids_term_kill_checkpids $base_stime $kill_list) + [ -z "$kill_list" ] && break + let try+=1 + done + if [ -n "$kill_list" ] ; then + kill -KILL $kill_list >/dev/null 2>&1 + sleep 0.1 + kill_list=$(__kill_pids_term_kill_checkpids $base_stime $kill_list) + fi + fi + + [ -n "$kill_list" ] && return 1 + return 0 +} + +# __proc_pids {program} [pidfile] +# Set $pid to pids from /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=${2:-/run/$base.pid} + local pid_dir=$(/usr/bin/dirname $pid_file > /dev/null) + local binary=$3 + + [ -d "$pid_dir" ] && [ ! -r "$pid_dir" ] && return 4 + + pid= + if [ -f "$pid_file" ] ; then + local line p + + [ ! -r "$pid_file" ] && return 4 # "user had insufficient privilege" + while : ; do + read line + [ -z "$line" ] && break + for p in $line ; do + if [ -z "${p//[0-9]/}" ] && [ -d "/proc/$p" ] ; then + if [ -n "$binary" ] ; then + local b=$(readlink /proc/$p/exe | sed -e 's/\s*(deleted)$//') + [ "$b" != "$binary" ] && continue + fi + pid="$pid $p" + fi + done + done < "$pid_file" + + if [ -n "$pid" ]; then + return 0 + fi + return 1 # "Program is dead and /run pid file exists" + fi + return 3 # "Program is not running" +} + +# Output PIDs of matching processes, found using pidof +__pids_pidof() { + pidof -c -m -o $$ -o $PPID -o %PPID -x "$1" || \ + pidof -c -m -o $$ -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}" "[arg1]..." + 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 $"$0: Usage: daemon [+/-nicelevel] {program}" "[arg1]..." + return 1 + ;; + esac + done + + # Save basename. + [ -z "$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 try binary= + + RC=0; delay=3; try=0 + # 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" = "-b" ]; then + if [ -z $pid_file ]; then + echo $"-b option can be used only with -p" + echo $"Usage: killproc -p pidfile -b binary program" + return 1 + fi + binary=$2 + shift 2 + fi + if [ "$1" = "-d" ]; then + delay=$(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*$1} END {printf("%d",delay+0.5)}') + if [ "$?" -eq 1 ]; then + echo $"Usage: killproc [-p pidfile] [ -d delay] {program} [-signal]" + return 1 + fi + shift 2 + fi + + + # check for second arg to be kill level + [ -n "${2:-}" ] && killlevel=$2 + + # Save basename. + base=${1##*/} + + # Find pid. + __pids_var_run "$1" "$pid_file" "$binary" + RC=$? + if [ -z "$pid" ]; then + if [ -z "$pid_file" ]; then + pid="$(__pids_pidof "$1")" + else + [ "$RC" = "4" ] && { failure $"$base shutdown" ; return $RC ;} + fi + fi + + # Kill it. + if [ -n "$pid" ] ; then + [ "$BOOTUP" = "verbose" -a -z "${LSB:-}" ] && echo -n "$base " + if [ -z "$killlevel" ] ; then + __kill_pids_term_kill -d $delay $pid + RC=$? + [ "$RC" -eq 0 ] && success $"$base shutdown" || failure $"$base shutdown" + # 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:-/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 "/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 $RC +} + +status() { + local base pid lock_file= pid_file= binary= + + # Test syntax. + if [ "$#" = 0 ] ; then + echo $"Usage: status [-p pidfile] {program}" + return 1 + fi + if [ "$1" = "-p" ]; then + pid_file=$2 + shift 2 + fi + if [ "$1" = "-l" ]; then + lock_file=$2 + shift 2 + fi + if [ "$1" = "-b" ]; then + if [ -z $pid_file ]; then + echo $"-b option can be used only with -p" + echo $"Usage: status -p pidfile -b binary program" + return 1 + fi + binary=$2 + shift 2 + fi + base=${1##*/} + + if [ "$_use_systemctl" = "1" ]; then + systemctl status ${0##*/}.service + ret=$? + # LSB daemons that dies abnormally in systemd looks alive in systemd's eyes due to RemainAfterExit=yes + # lets adjust the reality a little bit + if systemctl show -p ActiveState ${0##*/}.service | grep -q '=active$' && \ + systemctl show -p SubState ${0##*/}.service | grep -q '=exited$' ; then + ret=3 + fi + return $ret + fi + + # First try "pidof" + __pids_var_run "$1" "$pid_file" "$binary" + RC=$? + 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 + ;; + 4) + echo $"${base} status unknown due to insufficient privileges." + return 4 + ;; + esac + if [ -z "${lock_file}" ]; then + lock_file=${base} + fi + # See if /var/lock/subsys/${lock_file} exists + if [ -f /var/lock/subsys/${lock_file} ]; 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 /bin/plymouth ]; then + /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 /bin/plymouth ] && /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 +} + +# Check whether file $1 is a backup or rpm-generated file and should be ignored +is_ignored_file() { + case "$1" in + *~ | *.bak | *.old | *.orig | *.rpmnew | *.rpmorig | *.rpmsave) + return 0 + ;; + esac + return 1 +} + +# Convert the value ${1} of time unit ${2}-seconds into seconds: +convert2sec() { + local retval="" + + case "${2}" in + deci) retval=$(awk "BEGIN {printf \"%.1f\", ${1} / 10}") ;; + centi) retval=$(awk "BEGIN {printf \"%.2f\", ${1} / 100}") ;; + mili) retval=$(awk "BEGIN {printf \"%.3f\", ${1} / 1000}") ;; + micro) retval=$(awk "BEGIN {printf \"%.6f\", ${1} / 1000000}") ;; + nano) retval=$(awk "BEGIN {printf \"%.9f\", ${1} / 1000000000}") ;; + piko) retval=$(awk "BEGIN {printf \"%.12f\", ${1} / 1000000000000}") ;; + esac + + echo "${retval}" +} + +# Evaluate shvar-style booleans +is_true() { + case "$1" in + [tT] | [yY] | [yY][eE][sS] | [oO][nN] | [tT][rR][uU][eE] | 1) + return 0 + ;; + esac + return 1 +} + +# Evaluate shvar-style booleans +is_false() { + case "$1" in + [fF] | [nN] | [nN][oO] | [oO][fF][fF] | [fF][aA][lL][sS][eE] | 0) + return 0 + ;; + esac + return 1 +} + +# Apply sysctl settings, including files in /etc/sysctl.d +apply_sysctl() { + if [ -x /lib/systemd/systemd-sysctl ]; then + /lib/systemd/systemd-sysctl + else + for file in /usr/lib/sysctl.d/*.conf ; do + is_ignored_file "$file" && continue + [ -f /run/sysctl.d/${file##*/} ] && continue + [ -f /etc/sysctl.d/${file##*/} ] && continue + test -f "$file" && sysctl -e -p "$file" >/dev/null 2>&1 + done + for file in /run/sysctl.d/*.conf ; do + is_ignored_file "$file" && continue + [ -f /etc/sysctl.d/${file##*/} ] && continue + test -f "$file" && sysctl -e -p "$file" >/dev/null 2>&1 + done + for file in /etc/sysctl.d/*.conf ; do + is_ignored_file "$file" && continue + test -f "$file" && sysctl -e -p "$file" >/dev/null 2>&1 + done + sysctl -e -p /etc/sysctl.conf >/dev/null 2>&1 + fi +} + +# A sed expression to filter out the files that is_ignored_file recognizes +__sed_discard_ignored_files='/\(~\|\.bak\|\.old\|\.orig\|\.rpmnew\|\.rpmorig\|\.rpmsave\)$/d' + +if [ "$_use_systemctl" = "1" ]; then + if [ "x$1" = xstart -o \ + "x$1" = xstop -o \ + "x$1" = xrestart -o \ + "x$1" = xreload -o \ + "x$1" = xtry-restart -o \ + "x$1" = xforce-reload -o \ + "x$1" = xcondrestart ] ; then + + systemctl_redirect $0 $1 + exit $? + fi +fi + +strstr "$(cat /proc/cmdline)" "rc.debug" && set -x +return 0 + |