diff options
author | Patrick J Volkerding <volkerdi@slackware.com> | 2009-08-26 10:00:38 -0500 |
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committer | Eric Hameleers <alien@slackware.com> | 2018-05-31 22:41:17 +0200 |
commit | 5a12e7c134274dba706667107d10d231517d3e05 (patch) | |
tree | 55718d5acb710fde798d9f38d0bbaf594ed4b296 /source/a/sysvinit-functions/functions | |
download | current-5a12e7c134274dba706667107d10d231517d3e05.tar.gz |
Slackware 13.0slackware-13.0
Wed Aug 26 10:00:38 CDT 2009
Slackware 13.0 x86_64 is released as stable! Thanks to everyone who
helped make this release possible -- see the RELEASE_NOTES for the
credits. The ISOs are off to the replicator. This time it will be a
6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD.
We're taking pre-orders now at store.slackware.com. Please consider
picking up a copy to help support the project. Once again, thanks to
the entire Slackware community for all the help testing and fixing
things and offering suggestions during this development cycle.
As always, have fun and enjoy! -P.
Diffstat (limited to 'source/a/sysvinit-functions/functions')
-rw-r--r-- | source/a/sysvinit-functions/functions | 577 |
1 files changed, 577 insertions, 0 deletions
diff --git a/source/a/sysvinit-functions/functions b/source/a/sysvinit-functions/functions new file mode 100644 index 00000000..580216d1 --- /dev/null +++ b/source/a/sysvinit-functions/functions @@ -0,0 +1,577 @@ +# -*-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' |