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package/base-files: enhance service functions

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* allow matching process by name (useful for processes changing it)
 * check if first argument is executable
 * fix function name used in error messages

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@28991 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nico 2011-11-12 13:53:15 +00:00
parent 0999f2be56
commit 83e18cc961
1 changed files with 27 additions and 13 deletions
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40
package/base-files/files/lib/functions.sh
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@ -287,12 +287,15 @@ uci_apply_defaults() {
#
# Environment variables exposed:
# SERVICE_DAEMONIZE run EXEC in background
# SERVICE_WRITE_PID create a pid file and use it
# SERVICE_USE_PID assume EXEC creates its own pid file and use it
# SERVICE_PID_FILE pid file to use (default to /var/run/EXEC.pid)
# SERVICE_WRITE_PID create a pid-file and use it for matching
# SERVICE_MATCH_EXEC use EXEC command-line for matching (default)
# SERVICE_MATCH_NAME use EXEC process name for matching
# SERVICE_USE_PID assume EXEC create its own pid-file and use it for matching
# SERVICE_NAME process name to use (default to EXEC file part)
# SERVICE_PID_FILE pid file to use (default to /var/run/$SERVICE_NAME.pid)
# SERVICE_SIG signal to send when using -K
# SERVICE_SIG_RELOAD default signal used for reloading
# SERVICE_SIG_STOP default signal used for stopping
# SERVICE_SIG_RELOAD default signal used when reloading
# SERVICE_SIG_STOP default signal used when stopping
# SERVICE_STOP_TIME time to wait for a process to stop gracefully before killing it
# SERVICE_UID user EXEC should be run as
# SERVICE_GID group EXEC should be run as
@ -305,9 +308,13 @@ SERVICE_QUIET=1
SERVICE_SIG_RELOAD="HUP"
SERVICE_SIG_STOP="TERM"
SERVICE_STOP_TIME=5
SERVICE_MATCH_EXEC=1
service() {
local ssd
local exec
local name
local start
ssd="${SERVICE_DEBUG:+echo }start-stop-daemon${SERVICE_QUIET:+ -q}"
case "$1" in
-C)
@ -315,24 +322,31 @@ service() {
;;
-S)
ssd="$ssd -S${SERVICE_DAEMONIZE:+ -b}${SERVICE_WRITE_PID:+ -m}"
start=1
;;
-K)
ssd="$ssd -K${SERVICE_SIG:+ -s $SERVICE_SIG}"
;;
*)
echo "ssd: unknow action '$1'" 1>&2
echo "service: unknown ACTION '$1'" 1>&2
return 1
esac
shift
if [ -z "$1" ]; then
echo "ssd: missing arguments" 1>&2
exec="$1"
[ -n "$exec" ] || {
echo "service: missing argument" 1>&2
return 1
fi
ssd="$ssd -x $1"
if [ -n "$SERVICE_PID_FILE$SERVICE_USE_PID$SERVICE_WRITE_PID" ]; then
ssd="$ssd -p ${SERVICE_PID_FILE:-/var/run/${1##*/}.pid}"
fi
}
[ -x "$exec" ] || {
echo "service: file '$exec' is not executable" 1>&2
return 1
}
name="${SERVICE_NAME:-${exec##*/}}"
[ -z "$SERVICE_USE_PID$SERVICE_WRITE_PID$SERVICE_PID_FILE" ] \
|| ssd="$ssd -p ${SERVICE_PID_FILE:-/var/run/$name.pid}"
[ -z "$SERVICE_MATCH_NAME" ] || ssd="$ssd -n $name"
ssd="$ssd${SERVICE_UID:+ -c $SERVICE_UID${SERVICE_GID:+:$SERVICE_GID}}"
[ -z "$SERVICE_MATCH_EXEC$start" ] || ssd="$ssd -x $exec"
shift
$ssd${1:+ -- "$@"}
}