X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Ftrack-untrack.c;h=3073996a9f6d19acfa257e87b1075959a9da3521;hp=a4f4689e7457c226821280778aff330fdc376434;hb=dc1c9a44fba1a368c283186e531c217206f5e816;hpb=890d8fe47755c3bad936389cf48ffa141cff41c9

diff --git a/src/bin/lttng/commands/track-untrack.c b/src/bin/lttng/commands/track-untrack.c
index a4f4689e7..3073996a9 100644
--- a/src/bin/lttng/commands/track-untrack.c
+++ b/src/bin/lttng/commands/track-untrack.c
@@ -64,28 +64,6 @@ static struct poptOption long_options[] = {
 	{ 0, 0, 0, 0, 0, 0, 0, },
 };
 
-/*
- * usage
- */
-static void usage(FILE *ofp, const char *cmd_str)
-{
-	fprintf(ofp, "usage: lttng %s [-k|-u] [OPTIONS]\n", cmd_str);
-	fprintf(ofp, "\n");
-	fprintf(ofp, "If no session is given (-s), the context is added to\n");
-	fprintf(ofp, "the current sesssion. Exactly one domain (-k or -u)\n");
-	fprintf(ofp, "must be specified.\n");
-	fprintf(ofp, "\n");
-	fprintf(ofp, "Options:\n");
-	fprintf(ofp, "  -h, --help               Show this help.\n");
-	fprintf(ofp, "      --list-options       Simple listing of options.\n");
-	fprintf(ofp, "  -s, --session NAME       Apply to session name.\n");
-	fprintf(ofp, "  -k, --kernel             Apply to the kernel tracer.\n");
-	fprintf(ofp, "  -u, --userspace          Apply to the user-space tracer.\n");
-	fprintf(ofp, "  -p, --pid [PID]          Process ID tracker. Leave PID empty when used with --all.\n");
-	fprintf(ofp, "  -a, --all                All PIDs (use with --pid).\n");
-	fprintf(ofp, "\n");
-}
-
 static
 int parse_pid_string(const char *_pid_string,
 		int all, int **_pid_list, int *nr_pids)
@@ -109,7 +87,7 @@ int parse_pid_string(const char *_pid_string,
 		goto error;
 	}
 	if (all) {
-		pid_list = zmalloc(sizeof(*_pid_list));
+		pid_list = zmalloc(sizeof(*pid_list));
 		if (!pid_list) {
 			ERR("Out of memory");
 			retval = CMD_ERROR;
@@ -153,6 +131,11 @@ int parse_pid_string(const char *_pid_string,
 		/* For next loop */
 		one_pid_str = strtok_r(NULL, ",", &iter);
 	}
+	if (count == 0) {
+		ERR("Fatal error occurred when parsing pid string");
+		retval = CMD_ERROR;
+		goto error;
+	}
 
 	free(pid_string);
 	/* Identity of delimiter has been lost in first pass. */
@@ -171,7 +154,7 @@ int parse_pid_string(const char *_pid_string,
 		goto error;
 	}
 
-	/* Copy */
+	/* Reparse string and populate the pid list. */
 	count = 0;
 	one_pid_str = strtok_r(pid_string, ",", &iter);
 	while (one_pid_str != NULL) {
@@ -236,7 +219,6 @@ enum cmd_error_code track_untrack_pid(enum cmd_type cmd_type, const char *cmd_st
 	ret = parse_pid_string(pid_string, all, &pid_list, &nr_pids);
 	if (ret != CMD_SUCCESS) {
 		ERR("Error parsing PID string");
-		usage(stderr, cmd_str);
 		retval = CMD_ERROR;
 		goto end;
 	}
@@ -280,8 +262,14 @@ enum cmd_error_code track_untrack_pid(enum cmd_type cmd_type, const char *cmd_st
 				break;
 			}
 		} else {
-			MSG("PID %i %sed in session %s",
-					pid_list[i], cmd_str, session_name);
+			if (pid_list[i] != -1) {
+				MSG("PID %i %sed in session %s",
+						pid_list[i], cmd_str,
+						session_name);
+			} else {
+				MSG("All PIDs %sed in session %s",
+						cmd_str, session_name);
+			}
 			success = 1;
 		}
 
@@ -343,7 +331,7 @@ const char *get_mi_element_command(enum cmd_type cmd_type)
  */
 static
 int cmd_track_untrack(enum cmd_type cmd_type, const char *cmd_str,
-		int argc, const char **argv)
+		int argc, const char **argv, const char *help_msg)
 {
 	int opt, ret = 0;
 	enum cmd_error_code command_ret = CMD_SUCCESS;
@@ -353,7 +341,6 @@ int cmd_track_untrack(enum cmd_type cmd_type, const char *cmd_str,
 	struct mi_writer *writer = NULL;
 
 	if (argc < 1) {
-		usage(stderr, cmd_str);
 		command_ret = CMD_ERROR;
 		goto end;
 	}
@@ -364,7 +351,7 @@ int cmd_track_untrack(enum cmd_type cmd_type, const char *cmd_str,
 	while ((opt = poptGetNextOpt(pc)) != -1) {
 		switch (opt) {
 		case OPT_HELP:
-			usage(stdout, cmd_str);
+			SHOW_HELP();
 			goto end;
 		case OPT_LIST_OPTIONS:
 			list_cmd_options(stdout, long_options);
@@ -374,7 +361,6 @@ int cmd_track_untrack(enum cmd_type cmd_type, const char *cmd_str,
 			opt_pid = 1;
 			break;
 		default:
-			usage(stderr, cmd_str);
 			command_ret = CMD_UNDEFINED;
 			goto end;
 		}
@@ -382,7 +368,7 @@ int cmd_track_untrack(enum cmd_type cmd_type, const char *cmd_str,
 
 	ret = print_missing_or_multiple_domains(opt_kernel + opt_userspace);
 	if (ret) {
-		ret = CMD_ERROR;
+		command_ret = CMD_ERROR;
 		goto end;
 	}
 
@@ -399,7 +385,6 @@ int cmd_track_untrack(enum cmd_type cmd_type, const char *cmd_str,
 	/* Currently only PID tracker is supported */
 	if (!opt_pid) {
 		ERR("Please specify at least one tracker with its expected arguments");
-		usage(stderr, cmd_str);
 		command_ret = CMD_ERROR;
 		goto end;
 	}
@@ -480,10 +465,26 @@ end:
 
 int cmd_track(int argc, const char **argv)
 {
-	return cmd_track_untrack(CMD_TRACK, "track", argc, argv);
+	static const char *help_msg =
+#ifdef LTTNG_EMBED_HELP
+#include <lttng-track.1.h>
+#else
+	NULL
+#endif
+	;
+
+	return cmd_track_untrack(CMD_TRACK, "track", argc, argv, help_msg);
 }
 
 int cmd_untrack(int argc, const char **argv)
 {
-	return cmd_track_untrack(CMD_UNTRACK, "untrack", argc, argv);
+	static const char *help_msg =
+#ifdef LTTNG_EMBED_HELP
+#include <lttng-untrack.1.h>
+#else
+	NULL
+#endif
+	;
+
+	return cmd_track_untrack(CMD_UNTRACK, "untrack", argc, argv, help_msg);
 }