Implement the scancel command to send the job string to slurmctld

if no other command line options are specified.

src/scancel/opt.c

@@ -151,6 +151,33 @@ int initialize_and_process_args(int argc, char *argv[])
 
 }
 
+/* has_default_opt()
+ *
+ * No getopt() options were specified, only the
+ * job ids is on the command line.
+ *
+ */
+bool
+has_default_opt(void)
+{
+	if (opt.account == NULL
+	    && opt.batch == false
+	    && opt.interactive == false
+	    && opt.job_name == NULL
+	    && opt.partition == NULL
+	    && opt.qos == NULL
+	    && opt.reservation == NULL
+	    && opt.signal == (uint16_t) - 1
+	    && opt.state == JOB_END
+	    && opt.user_id == 0
+	    && opt.user_name == NULL
+	    && opt.wckey == NULL
+	    && opt.nodelist == NULL) {
+		return true;
+	}
+	return false;
+}
+
 static uint16_t
 _xlate_state_name(const char *state_name, bool env_var)
 {
@@ -223,6 +250,7 @@ static void _opt_default(void)
 #endif
 	opt.interactive	= false;
 	opt.job_cnt	= 0;
+	opt.job_list    = NULL;
 	opt.job_name	= NULL;
 	opt.nodelist	= NULL;
 	opt.partition	= NULL;

src/scancel/scancel.c

@@ -150,7 +150,10 @@ _proc_cluster(void)
 	int filter_cnt = 0;
 	int rc;
 
-	_signal_job_by_str();
+	if (has_default_opt()) {
+		rc = _signal_job_by_str();
+		return rc;
+	}
 
 	_load_job_records();
 	rc = _verify_job_ids();
@@ -172,7 +175,9 @@ _proc_cluster(void)
 	return rc;
 }
 
-/* _load_job_records - load all job information for filtering and verification */
+/* _load_job_records - load all job information for filtering
+ * and verification
+ */
 static void
 _load_job_records (void)
 {

src/scancel/scancel.h

@@ -78,6 +78,6 @@ opt_t opt;
  * 3. update options with commandline args
  * 4. perform some verification that options are reasonable
  */
-int initialize_and_process_args(int argc, char *argv[]);
-
+extern int initialize_and_process_args(int argc, char *argv[]);
+extern bool has_default_opt(void);
 #endif	/* _HAVE_SCANCEL_H */