procd: update procd.sh to support sending kill signal to a service

Add procd_send_signal which allows to send an optional specified
kill signal to one specified  or all instances of a given service.
By default SIGHUP is sent if no signal is specified

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

diff --git a/package/system/procd/files/procd.sh b/package/system/procd/files/procd.sh
index d2c5b424a7f88e45568c81177078116128f39e7a..8f18cda70e65b7b33ff6029d8e3ac4e357bf411c 100644 (file)
--- a/package/system/procd/files/procd.sh
+++ b/package/system/procd/files/procd.sh
@@ -29,6 +29,9 @@
 # procd_kill(service, [instance]):
 #   Kill a service instance (or all instances)
 #
+# procd_send_signal(service, [instance], [signal])
+#   Send a signal to a service instance (or all instances)
+#
 
 . $IPKG_INSTROOT/usr/share/libubox/jshn.sh
 
@@ -373,6 +376,18 @@ _procd_kill() {
        _procd_ubus_call delete
 }
 
+_procd_send_signal() {
+       local service="$1"
+       local instance="$2"
+       local signal="$3"
+
+       json_init
+       json_add_string name "$service"
+       [ -n "$instance" -a "$instance" != "*" ] && json_add_string instance "$instance"
+       [ -n "$signal" ] && json_add_int signal "$signal"
+       _procd_ubus_call signal
+}
+
 procd_open_data() {
        local name="$1"
        json_set_namespace procd __procd_old_cb
@@ -457,4 +472,5 @@ _procd_wrapper \
        procd_append_param \
        procd_add_validation \
        procd_set_config_changed \
-       procd_kill
+       procd_kill \
+       procd_send_signal