# -*-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 "${NOLOCALE:-}" ] ; then . /etc/profile.d/lang.sh fi # Read in our configuration if [ -z "${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 if [ "${BOOTUP:-}" != "verbose" ]; then INITLOG_ARGS="-q" else INITLOG_ARGS= 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 } # __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 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 $remaining fi sleep 2 remaining=$(LC_ALL=C awk "/^#/ {next} $1" "$2" | sort -r) [ -z "$remaining" ] && break fstab-decode /sbin/fuser -k -m $sig $remaining >/dev/null sleep 5 retry=$(($retry -1)) sig=-9 done } # Similar to __umount loop above, specialized for loopback devices __umount_loopback_loop() { local remaining devremaining sig= local retry=3 remaining=$(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 $remaining >/dev/null sleep 5 retry=$(($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 "$pid_file" ] ; then local line p read line < "$pid_file" for p in $line ; do [ -z "${p//[0-9]/}" -a -d "/proc/$p" ] && pid="$pid $p" done if [ -n "$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= 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 $NICELEVEL" # Echo daemon [ "${BOOTUP:-}" = "verbose" -a -z "${LSB:-}" ] && echo -n " $base" # And start it up. if [ -z "$user" ]; then $nice /bin/bash -c "$corelimit >/dev/null 2>&1 ; $*" else $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" pid="$(__pids_pidof "$1")" if [ -n "$pid" ]; then echo $"${base} (pid $pid) is running..." return 0 fi # Next try "/var/run/*.pid" files __pids_var_run "$1" "$pid_file" case "$?" 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" ] && $SETCOLOR_NORMAL echo -n "]" echo -ne "\r" return 1 } # Inform the graphical boot of our current state update_boot_stage() { if [ "$GRAPHICAL" = "yes" -a -x /usr/bin/rhgb-client ]; then /usr/bin/rhgb-client --update="$1" fi return 0 } # Log that something succeeded success() { #if [ -z "${IN_INITLOG:-}" ]; then # initlog $INITLOG_ARGS -n $0 -s "$1" -e 1 #fi [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_success return 0 } # Log that something failed failure() { local rc=$? #if [ -z "${IN_INITLOG:-}" ]; then # initlog $INITLOG_ARGS -n $0 -s "$1" -e 2 #fi [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_failure [ -x /usr/bin/rhgb-client ] && /usr/bin/rhgb-client --details=yes return $rc } # Log that something passed, but may have had errors. Useful for fsck passed() { local rc=$? #if [ -z "${IN_INITLOG:-}" ]; then # initlog $INITLOG_ARGS -n $0 -s "$1" -e 1 #fi [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_passed return $rc } # Log a warning warning() { local rc=$? #if [ -z "${IN_INITLOG:-}" ]; then # initlog $INITLOG_ARGS -n $0 -s "$1" -e 1 #fi [ "$BOOTUP" != "verbose" -a -z "${LSB:-}" ] && echo_warning return $rc } # Run some action. Log its output. action() { local STRING rc STRING=$1 echo -n "$STRING " if [ "${RHGB_STARTED:-}" != "" -a -w /etc/rhgb/temp/rhgb-console ]; then echo -n "$STRING " > /etc/rhgb/temp/rhgb-console fi shift "$@" && success $"$STRING" || failure $"$STRING" rc=$? echo if [ "${RHGB_STARTED:-}" != "" -a -w /etc/rhgb/temp/rhgb-console ]; then if [ "$rc" = "0" ]; then echo_success > /etc/rhgb/temp/rhgb-console else echo_failure > /etc/rhgb/temp/rhgb-console [ -x /usr/bin/rhgb-client ] && /usr/bin/rhgb-client --details=yes fi echo > /etc/rhgb/temp/rhgb-console fi 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/rhgb-client ] && /usr/bin/rhgb-client --details=yes 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/rhgb-client ] && /usr/bin/rhgb-client --details=no 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 } # find the working name for a running dm device with the same table as one # that dmraid would create resolve_dm_name() { ( name="$1" line=$(/sbin/dmraid -ay -t --ignorelocking | \ egrep -iv "no block devices found|No RAID disks" | \ awk -F ':' "{ if (\$1 ~ /^$name$/) { print \$2; }}") for x in $line ; do if [[ "$x" =~ "^/dev/" ]] ; then majmin=$(get_numeric_dev dec $x) line=$(echo "$line" | sed -e "s,$x\( \|$\),$majmin\1,g") fi done line=$(echo "$line" | sed -e 's/^[ \t]*//' -e 's/[ \t]*$//' \ -e 's/ core [12] [[:digit:]]\+ / core [12] [[:digit:]]\\+ /') /sbin/dmsetup table | \ sed -n -e "s/.*\(no block devices found\|No devices found\).*//" \ -e "s/\(^[^:]\+\): $line\( \+$\|$\)/\1/p" ) 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'