Major changes

[lttng-tools.git] / lttng / commands / stop.c

diff --git a/lttng/commands/stop.c b/lttng/commands/stop.c
new file mode 100644 (file)
index 0000000..0245296
--- /dev/null
+++ b/lttng/commands/stop.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#define _GNU_SOURCE
+#include <popt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "cmd.h"
+#include "config.h"
+#include "utils.h"
+
+static char *opt_session_name;
+
+enum {
+       OPT_HELP = 1,
+};
+
+static struct poptOption long_options[] = {
+       /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
+       {"help",      'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
+       {0, 0, 0, 0, 0, 0, 0}
+};
+
+/*
+ * usage
+ */
+static void usage(FILE *ofp)
+{
+       fprintf(ofp, "usage: lttng stop [options] [NAME]\n");
+       fprintf(ofp, "\n");
+       fprintf(ofp, "Where NAME is an optional session name. If not specified, lttng will\n");
+       fprintf(ofp, "get it from the configuration directory (.lttng).\n");
+       fprintf(ofp, "\n");
+       fprintf(ofp, "  -h, --help               Show this help\n");
+       fprintf(ofp, "\n");
+}
+
+/*
+ *  stop_tracing
+ *
+ *  Start tracing for all trace of the session.
+ */
+static int stop_tracing(void)
+{
+       int ret = CMD_SUCCESS;
+       char *session_name;
+
+       if (opt_session_name == NULL) {
+               session_name = get_session_name();
+               if (session_name == NULL) {
+                       ret = CMD_ERROR;
+                       goto error;
+               }
+       } else {
+               session_name = opt_session_name;
+       }
+
+       ret = lttng_stop_tracing(session_name);
+       if (ret < 0) {
+               goto free_name;
+       }
+
+       MSG("Tracing stopped for session %s", session_name);
+
+free_name:
+       free(session_name);
+error:
+       return ret;
+}
+
+/*
+ *  cmd_stop
+ *
+ *  The 'stop <options>' first level command
+ */
+int cmd_stop(int argc, const char **argv)
+{
+       int opt, ret;
+       static poptContext pc;
+
+       pc = poptGetContext(NULL, argc, argv, long_options, 0);
+       poptReadDefaultConfig(pc, 0);
+
+       while ((opt = poptGetNextOpt(pc)) != -1) {
+               switch (opt) {
+               case OPT_HELP:
+                       usage(stderr);
+                       ret = CMD_SUCCESS;
+                       goto end;
+               default:
+                       usage(stderr);
+                       ret = CMD_UNDEFINED;
+                       goto end;
+               }
+       }
+
+       opt_session_name = (char*) poptGetArg(pc);
+
+       ret = stop_tracing();
+
+end:
+       return ret;
+}