/* Variables */
static char *progname;
-static char short_uuid[9];
+static char *session_name;
+static char short_str_uuid[UUID_SHORT_STR_LEN];
+static char long_str_uuid[UUID_STR_LEN];
+static uuid_t current_uuid;
/* Prototypes */
static int process_client_opt(void);
static int process_opt_list_sessions(void);
static int process_opt_list_traces(void);
static int process_opt_create_session(void);
-static int process_opt_session_uuid(void);
+static int set_session_uuid(void);
static void sighandler(int sig);
-static void shorten_uuid(char *in, char *out);
static int set_signal_handler(void);
static int validate_options(void);
static char *get_cmdline_by_pid(pid_t pid);
+static void set_opt_session_info(void);
+static void shorten_uuid(char *long_u, char *short_u);
/*
* start_client
static int process_client_opt(void)
{
int ret;
- uuid_t uuid;
+
+ set_opt_session_info();
if (opt_list_apps) {
ret = process_opt_list_apps();
}
}
- if (opt_list_traces) {
- ret = process_opt_list_traces();
+ if (opt_destroy_session) {
+ ret = lttng_destroy_session(¤t_uuid);
if (ret < 0) {
goto end;
}
+ MSG("Session %s destroyed.", opt_session_uuid);
}
- if (opt_create_session != NULL) {
- ret = process_opt_create_session();
- if (ret < 0) {
- goto end;
+ if (!opt_list_session && !opt_list_apps) {
+ if (uuid_is_null(current_uuid)) {
+ /* If no session uuid, create session */
+ DBG("No session specified. Creating session.");
+ ret = process_opt_create_session();
+ if (ret < 0) {
+ goto end;
+ }
}
- }
- if (opt_destroy_session != NULL) {
- uuid_parse(opt_destroy_session, uuid);
- ret = lttng_destroy_session(&uuid);
+ DBG("Set session uuid to %s", long_str_uuid);
+ ret = set_session_uuid();
if (ret < 0) {
- goto end;
+ ERR("Session UUID %s not found", opt_session_uuid);
+ goto error;
}
}
- if (opt_session_uuid != NULL) {
- DBG("Set session uuid to %s", short_uuid);
- ret = process_opt_session_uuid();
+ if (opt_list_traces) {
+ ret = process_opt_list_traces();
if (ret < 0) {
- ERR("Session UUID %s not found", opt_session_uuid);
- goto error;
+ goto end;
}
}
+ /*
+ * Action on traces (kernel or/and userspace).
+ */
if (opt_trace_kernel) {
ERR("Not implemented yet");
goto end;
}
/*
- * process_opt_session_uuid
+ * set_opt_session_info
+ *
+ * Setup session_name, current_uuid, short_str_uuid and
+ * long_str_uuid using the command line options.
+ */
+static void set_opt_session_info(void)
+{
+ int count, i, short_len;
+ char *tok;
+ struct lttng_session *sessions;
+
+ if (opt_session_uuid != NULL) {
+ short_len = sizeof(short_str_uuid) - 1;
+ /* Shorten uuid */
+ tok = strchr(opt_session_uuid, '.');
+ if (strlen(tok + 1) == short_len) {
+ memcpy(short_str_uuid, tok + 1, short_len);
+ short_str_uuid[short_len] = '\0';
+ }
+
+ /* Get long real uuid_t from session daemon */
+ count = lttng_list_sessions(&sessions);
+ for (i = 0; i < count; i++) {
+ uuid_unparse(sessions[i].uuid, long_str_uuid);
+ if (strncmp(long_str_uuid, short_str_uuid, 8) == 0) {
+ uuid_copy(current_uuid, sessions[i].uuid);
+ break;
+ }
+ }
+ }
+
+ if (opt_session_name != NULL) {
+ session_name = strndup(opt_session_name, NAME_MAX);
+ }
+}
+
+/*
+ * shorten_uuid
+ *
+ * Small function to shorten the 37 bytes long uuid_t
+ * string representation to 8 characters.
+ */
+static void shorten_uuid(char *long_u, char *short_u)
+{
+ memcpy(short_u, long_u, 8);
+ short_u[UUID_SHORT_STR_LEN - 1] = '\0';
+}
+
+/*
+ * set_session_uuid
*
* Set current session uuid to the current flow of
- * command(s) using the already shorten uuid.
+ * command(s) using the already shorten uuid or
+ * current full uuid.
*/
-static int process_opt_session_uuid(void)
+static int set_session_uuid(void)
{
int ret, count, i;
+ char str_uuid[37];
struct lttng_session *sessions;
+ if (!uuid_is_null(current_uuid)) {
+ lttng_set_current_session_uuid(¤t_uuid);
+ goto end;
+ }
+
count = lttng_list_sessions(&sessions);
if (count < 0) {
ret = count;
}
for (i = 0; i < count; i++) {
- if (strncmp(sessions[i].uuid, short_uuid, 8) == 0) {
- lttng_set_current_session_uuid(sessions[i].uuid);
+ uuid_unparse(sessions[i].uuid, str_uuid);
+ if (strncmp(str_uuid, short_str_uuid, 8) == 0) {
+ lttng_set_current_session_uuid(&sessions[i].uuid);
break;
}
}
free(sessions);
+end:
return 0;
error:
static int process_opt_list_traces(void)
{
int ret, i;
- uuid_t uuid;
struct lttng_trace *traces;
- uuid_parse(opt_session_uuid, uuid);
- ret = lttng_list_traces(&uuid, &traces);
+ ret = lttng_list_traces(¤t_uuid, &traces);
if (ret < 0) {
goto error;
}
int ret;
uuid_t session_id;
char str_uuid[37];
+ char name[NAME_MAX];
+ time_t rawtime;
+ struct tm *timeinfo;
+
+ /* Auto session creation */
+ if (opt_create_session == 0) {
+ time(&rawtime);
+ timeinfo = localtime(&rawtime);
+ strftime(name, sizeof(name), "%Y%m%d-%H%M%S", timeinfo);
+ session_name = strndup(name, sizeof(name));
+ }
- ret = lttng_create_session(opt_create_session, &session_id);
+ ret = lttng_create_session(session_name, &session_id);
if (ret < 0) {
goto error;
}
uuid_unparse(session_id, str_uuid);
+ uuid_copy(current_uuid, session_id);
+ shorten_uuid(str_uuid, short_str_uuid);
- MSG("Session created:");
- MSG(" %s (%s)", opt_create_session, str_uuid);
+ MSG("Session UUID created: %s.%s", session_name, short_str_uuid);
error:
return ret;
}
-/*
- * extract_short_uuid
- *
- * Extract shorten uuid and copy it to out.
- * Shorten uuid format : '<name>.<short_uuid>'
- */
-static int extract_short_uuid(char *in, char *out)
-{
- char *tok;
-
- tok = strchr(in, '.');
- if (strlen(tok+1) == 8) {
- memcpy(out, tok+1, 8);
- out[9] = '\0';
- return 0;
- }
-
- return -1;
-}
-
-/*
- * shorten_uuid
- *
- * Small function to shorten the 37 bytes long uuid_t
- * string representation to 8 characters.
- */
-static void shorten_uuid(char *in, char *out)
-{
- memcpy(out, in, 8);
- out[8] = '\0';
-}
-
/*
* process_opt_list_sessions
*
{
int ret, count, i;
char tmp_short_uuid[9];
+ char str_uuid[37];
struct lttng_session *sess;
count = lttng_list_sessions(&sess);
MSG("Available sessions (UUIDs):");
for (i = 0; i < count; i++) {
- shorten_uuid(sess[i].uuid, tmp_short_uuid);
+ uuid_unparse(sess[i].uuid, str_uuid);
+ shorten_uuid(str_uuid, tmp_short_uuid);
MSG(" %d) %s.%s", i+1, sess[i].name, tmp_short_uuid);
}
*/
static int validate_options(void)
{
- int ret;
-
/* Conflicting command */
if (opt_start_trace && opt_stop_trace) {
ERR("Can't use --start and --stop together.");
goto error;
- /* Must have a session UUID for trace action. */
- } else if ((opt_session_uuid == NULL) &&
- (opt_create_trace || opt_start_trace || opt_stop_trace || opt_list_traces)) {
- ERR("You need to specify a session UUID.\nPlease use --session UUID to do so.");
- goto error;
/* If no PID specified and trace_kernel is off */
} else if ((opt_trace_pid == 0 && opt_trace_kernel == 0) &&
(opt_create_trace || opt_start_trace || opt_stop_trace)) {
ERR("Please specify a PID using -p, --pid PID.");
goto error;
- }
-
- if (opt_session_uuid != NULL) {
- ret = extract_short_uuid(opt_session_uuid, short_uuid);
- if (ret < 0) {
- ERR("Session UUID not valid. Must be <name>.<short_uuid>");
- goto error;
- }
+ } else if (opt_session_uuid && opt_create_session) {
+ ERR("Please don't use -s and -c together. Useless action.");
+ goto error;
+ } else if (opt_list_traces && opt_session_uuid == NULL) {
+ ERR("Can't use -t without -s, --session option.");
+ goto error;
}
return 0;
void clean_exit(int code)
{
DBG("Clean exit");
+ if (session_name) {
+ free(session_name);
+ }
+
exit(code);
}
projects / lttng-tools.git / blobdiff