New function, svc_find_by_pidfile()

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

src/svc.c

@@ -32,6 +32,7 @@
 #include "finit.h"
 #include "svc.h"
 #include "helpers.h"
+#include "pid.h"
 #include "util.h"
 
 /* Each svc_t needs a unique job# */
@@ -342,6 +343,25 @@ svc_t *svc_find_by_nameid(char *name, int id)
 	return NULL;
 }
 
+/**
+ * svc_find_by_plidfile - Find an service object by its PID file
+ * @fn: PID file, can be absolute path or relative to /run
+ *
+ * Returns:
+ * A pointer to an &svc_t object, or %NULL if not found.
+ */
+svc_t *svc_find_by_pidfile(char *fn)
+{
+	svc_t *svc, *iter = NULL;
+
+	for (svc = svc_iterator(&iter, 1); svc; svc = svc_iterator(&iter, 0)) {
+		if (string_compare(fn, pid_file(svc)))
+			return svc;
+	}
+
+	return NULL;
+}
+
 /**
  * svc_mark_dynamic - Mark dynamically loaded services for deletion.
  *