xref: /OK3568_Linux_fs/yocto/meta-openembedded/meta-oe/recipes-support/libusbgx/libusbgx/usbgx.initd (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1#! /bin/sh
2### BEGIN INIT INFO
3# Provides:          usbg
4# Required-Start:    $local_fs
5# Should-Start:
6# Required-Stop:     $local_fs
7# Should-Stop:
8# Default-Start:     2 3 4 5
9# Default-Stop:      0 1 6
10# Short-Description: Example initscript
11# Description:       This file should be used to construct scripts to be
12#                    placed in /etc/init.d
13### END INIT INFO
14
15# PATH should only include /usr/* if it runs after the mountnfs.sh script
16PATH=/sbin:/usr/sbin:/bin:/usr/bin
17
18DESC="Load USB gadget schemas"
19NAME="usbgx"
20DAEMON=/usr/bin/gadget-start
21DAEMON_ARGS=""
22PIDFILE=/var/run/$NAME.pid
23
24. /etc/init.d/functions || exit 1
25
26# Exit if the package is not installed
27[ -x "$DAEMON" ] || exit 0
28
29# Read configuration variable file if it is present
30[ -r /etc/default/$NAME ] && . /etc/default/$NAME
31
32#
33# Function that starts the daemon/service
34#
35do_start() {
36    local status pid
37
38    status=0
39    pid=`pidofproc $NAME` || status=$?
40    case $status in
41        0)
42            echo "$DESC already running ($pid)."
43            exit 1
44            ;;
45        *)
46            echo "Starting $DESC ..."
47            exec $DAEMON $DAEMON_ARGS >/dev/null 2>&1 || status=$?
48            echo "ERROR: Failed to start $DESC."
49            exit $status
50            ;;
51    esac
52}
53
54#
55# Function that stops the daemon/service
56#
57do_stop() {
58    local pid status
59
60    status=0
61    pid=`pidofproc $NAME` || status=$?
62    case $status in
63        0)
64            # Exit when fail to stop, the kill would complain when fail
65            kill -s 15 $pid >/dev/null && rm -f $PIDFILE && \
66                echo "Stopped $DESC ($pid)." || exit $?
67            ;;
68        *)
69            echo "$DESC is not running; none killed." >&2
70            ;;
71    esac
72
73    return $status
74}
75
76#
77# Function that sends a SIGHUP to the daemon/service
78#
79do_reload() {
80    local pid status
81
82    status=0
83    # If the daemon can reload its configuration without
84    # restarting (for example, when it is sent a SIGHUP),
85    # then implement that here.
86    pid=`pidofproc $NAME` || status=$?
87    case $status in
88        0)
89            echo "Reloading $DESC ..."
90            kill -s 1 $pid || exit $?
91            ;;
92        *)
93            echo "$DESC is not running; none reloaded." >&2
94            ;;
95    esac
96    exit $status
97}
98
99
100#
101# Function that shows the daemon/service status
102#
103status_of_proc () {
104    local pid status
105
106    status=0
107    # pidof output null when no program is running, so no "2>/dev/null".
108    pid=`pidofproc $NAME` || status=$?
109    case $status in
110        0)
111            echo "$DESC is running ($pid)."
112            exit 0
113            ;;
114        *)
115            echo "$DESC is not running." >&2
116            exit $status
117            ;;
118    esac
119}
120
121case "$1" in
122    start)
123        do_start
124        ;;
125    stop)
126        do_stop || exit $?
127        ;;
128    status)
129        status_of_proc
130        ;;
131    restart)
132        # Always start the service regardless the status of do_stop
133        do_stop
134        do_start
135        ;;
136    try-restart|force-reload)
137        do_stop && do_start
138        ;;
139    *)
140        echo "Usage: $0 {start|stop|status|restart|try-restart|force-reload}" >&2
141        exit 3
142        ;;
143esac
144