* 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
- * as published by the Free Software Foundation; only version 2
- * of the License.
+ * it under the terms of the GNU General Public License, version 2 only,
+ * as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
{ "version", cmd_version},
{ "calibrate", cmd_calibrate},
{ "view", cmd_view},
+ { "enable-consumer", cmd_enable_consumer}, /* OBSOLETE */
+ { "disable-consumer", cmd_disable_consumer}, /* OBSOLETE */
{ NULL, NULL} /* Array closure */
};
static void usage(FILE *ofp)
{
- fprintf(ofp, "LTTng Trace Control " VERSION"\n\n");
- fprintf(ofp, "usage: lttng [OPTIONS] <COMMAND>\n");
+ fprintf(ofp, "LTTng Trace Control " VERSION" - " VERSION_NAME"\n\n");
+ fprintf(ofp, "usage: lttng [OPTIONS] <COMMAND> [<ARGS>]\n");
fprintf(ofp, "\n");
fprintf(ofp, "Options:\n");
fprintf(ofp, " -h, --help Show this help\n");
fprintf(ofp, " --sessiond-path PATH Session daemon full path\n");
fprintf(ofp, "\n");
fprintf(ofp, "Commands:\n");
- fprintf(ofp, " add-context Add context to event and/or channel\n");
- fprintf(ofp, " calibrate Quantify LTTng overhead\n");
- fprintf(ofp, " create Create tracing session\n");
- fprintf(ofp, " destroy Tear down tracing session\n");
- fprintf(ofp, " enable-channel Enable tracing channel\n");
- fprintf(ofp, " enable-event Enable tracing event\n");
- fprintf(ofp, " disable-channel Disable tracing channel\n");
- fprintf(ofp, " disable-event Disable tracing event\n");
- fprintf(ofp, " list List possible tracing options\n");
- fprintf(ofp, " set-session Set current session name\n");
- fprintf(ofp, " start Start tracing\n");
- fprintf(ofp, " stop Stop tracing\n");
- fprintf(ofp, " version Show version information\n");
- fprintf(ofp, " view Start trace viewer\n");
+ fprintf(ofp, " add-context Add context to event and/or channel\n");
+ fprintf(ofp, " calibrate Quantify LTTng overhead\n");
+ fprintf(ofp, " create Create tracing session\n");
+ fprintf(ofp, " destroy Tear down tracing session\n");
+ fprintf(ofp, " enable-channel Enable tracing channel\n");
+ fprintf(ofp, " enable-event Enable tracing event\n");
+ fprintf(ofp, " disable-channel Disable tracing channel\n");
+ fprintf(ofp, " disable-event Disable tracing event\n");
+ fprintf(ofp, " list List possible tracing options\n");
+ fprintf(ofp, " set-session Set current session name\n");
+ fprintf(ofp, " start Start tracing\n");
+ fprintf(ofp, " stop Stop tracing\n");
+ fprintf(ofp, " version Show version information\n");
+ fprintf(ofp, " view Start trace viewer\n");
fprintf(ofp, "\n");
fprintf(ofp, "Each command also has its own -h, --help option.\n");
fprintf(ofp, "\n");
}
/* Command not found */
- ret = -1;
+ ret = CMD_UNDEFINED;
end:
return ret;
static int check_sessiond(void)
{
int ret;
- char *pathname = NULL, *alloc_pathname = NULL;
+ char *pathname = NULL;
ret = lttng_session_daemon_alive();
if (ret == 0) { /* not alive */
/* Try command line option path */
- if (opt_sessiond_path != NULL) {
- ret = access(opt_sessiond_path, F_OK | X_OK);
- if (ret < 0) {
- ERR("No such file or access denied: %s", opt_sessiond_path);
- goto end;
- }
- pathname = opt_sessiond_path;
- } else {
- /* Try LTTNG_SESSIOND_PATH env variable */
+ pathname = opt_sessiond_path;
+
+ /* Try LTTNG_SESSIOND_PATH env variable */
+ if (pathname == NULL) {
pathname = getenv(DEFAULT_SESSIOND_PATH_ENV);
}
- /* Let's rock and roll */
+ /* Try with configured path */
if (pathname == NULL) {
- ret = asprintf(&alloc_pathname, INSTALL_BIN_PATH "/lttng-sessiond");
- if (ret < 0) {
- perror("asprintf spawn sessiond");
- goto end;
+ if (CONFIG_SESSIOND_BIN[0] != '\0') {
+ pathname = CONFIG_SESSIOND_BIN;
}
- pathname = alloc_pathname;
+ }
+
+ /* Let's rock and roll while trying the default path */
+ if (pathname == NULL) {
+ pathname = INSTALL_BIN_PATH "/lttng-sessiond";
+ }
+
+ DBG("Session daemon at: %s", pathname);
+
+ /* Check existence and permissions */
+ ret = access(pathname, F_OK | X_OK);
+ if (ret < 0) {
+ ERR("No such file or access denied: %s", pathname);
+ goto end;
}
ret = spawn_sessiond(pathname);
- free(alloc_pathname);
if (ret < 0) {
ERR("Problem occurred when starting %s", pathname);
- goto end;
}
}
-
end:
return ret;
}
case CMD_FATAL:
ERR("Fatal error");
break;
+ case CMD_UNSUPPORTED:
+ ERR("Unsupported command");
+ break;
case -1:
usage(stderr);
ret = 1;
case 0:
break;
default:
- ERR("%s", lttng_strerror(ret));
+ if (ret < 0) {
+ ret = -ret;
+ }
break;
}
int main(int argc, char *argv[])
{
int ret;
+ char *user;
progname = argv[0] ? argv[0] : "lttng";
/* For Mathieu Desnoyers a.k.a. Dr. Tracing */
- if (strncmp(progname, "drtrace", 7) == 0 ||
- strncmp("compudj", getenv("USER"), 7) == 0) {
+ user = getenv("USER");
+ if (user != NULL && ((strncmp(progname, "drtrace", 7) == 0 ||
+ strncmp("compudj", user, 7) == 0))) {
MSG("%c[%d;%dmWelcome back Dr Tracing!%c[%dm\n", 27,1,33,27,0);
}
+ /* Thanks Mathieu */
ret = set_signal_handler();
if (ret < 0) {