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Jesse Zhang 2e913bc62a initscripts: Add status function to /etc/init.d/functions

[ CQID: WIND00388860 ]

Many initscripts want a simple way to display status information.
Add the 'status' function to the functions file.

(From OE-Core rev: adcb39845b6d3af9472fa5051a1d918344eb6bda)

Signed-off-by: Jesse Zhang <sen.zhang@windriver.com>
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2013-02-08 14:50:38 +00:00

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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.

NOTE: The pidofproc () doesn't support the process which is a script unless

the pidof supports "-x" option. If you want to use it for such a

process:

1) If there is no "pidof -x", replace the "pidof $1" with another

command like(for core-image-minimal):

ps | awk '/'"$1"'/ {print $1}'

Or

2) If there is "pidof -x", replace "pidof" with "pidof -x".

pidofproc - print the pid of a process

$1: the name of the process

pidofproc () {

# pidof output null when no program is running, so no "2>/dev/null".
pid=`pidof $1`
status=$?
case $status in
0)
	echo $pid
	return 0
	;;
127)
	echo "ERROR: command pidof not found" >&2
	exit 127
	;;
*)
	return $status
	;;
esac

}

machine_id() { # return the machine ID awk 'BEGIN { FS=": " } /Hardware/
{ gsub(" ", "_", $2); print tolower($2) } ' </proc/cpuinfo }

killproc() { # kill the named process(es) pid=pidofproc $1 && kill $pid }

status() { local pid if [ "$#" = 0 ]; then echo "Usage: status {program}" return 1 fi pid=pidofproc $1 if [ -n "$pid" ]; then echo "$1 (pid $pid) is running..." else echo "$1 is stopped" fi return 3 }

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