#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
-#include <time.h>
+#include <common/compat/time.h>
#include <unistd.h>
#include <signal.h>
#include <sys/wait.h>
static int opt_no_consumer;
static int opt_no_output;
static int opt_snapshot;
-static unsigned int opt_live_timer;
+static uint32_t opt_live_timer;
+
+#ifdef LTTNG_EMBED_HELP
+static const char help_msg[] =
+#include <lttng-create.1.h>
+;
+#endif
enum {
OPT_HELP = 1,
extern int _lttng_create_session_ext(const char *name, const char *url,
const char *datetime);
-/*
- * usage
- */
-static void usage(FILE *ofp)
-{
- fprintf(ofp, "usage: lttng create [NAME] [OPTIONS] \n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Without a given NAME, the default is 'auto-<yyyymmdd>-<hhmmss>'\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, " -o, --output PATH Specify output path for traces\n");
- fprintf(ofp, " --no-output Traces will not be outputted\n");
- fprintf(ofp, " --snapshot Set the session in snapshot mode.\n");
- fprintf(ofp, " Created in no-output mode and uses the URL,\n");
- fprintf(ofp, " if one, as the default snapshot output.\n");
- fprintf(ofp, " Every channel will be set in overwrite mode\n");
- fprintf(ofp, " and with mmap output (splice not supported).\n");
- fprintf(ofp, " --live [USEC] Set the session in live-reading mode.\n");
- fprintf(ofp, " The delay parameter in micro-seconds is the\n");
- fprintf(ofp, " maximum time the user can wait for the data\n");
- fprintf(ofp, " to be flushed. Can be set with a network\n");
- fprintf(ofp, " URL (-U or -C/-D) and must have a relayd listening.\n");
- fprintf(ofp, " By default, %u is used for the timer and the\n",
- DEFAULT_LTTNG_LIVE_TIMER);
- fprintf(ofp, " network URL is set to net://127.0.0.1.\n");
- fprintf(ofp, " --shm-path PATH Path where shared memory holding buffers\n");
- fprintf(ofp, " should be created. Useful when used with pramfs\n");
- fprintf(ofp, " to extract trace data after crash.\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Extended Options:\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Using these options, each API call can be controlled individually.\n");
- fprintf(ofp, "\n");
- fprintf(ofp, " -U, --set-url=URL Set URL destination of the trace data.\n");
- fprintf(ofp, " It is persistent for the session lifetime.\n");
- fprintf(ofp, " This will set both data and control URL.\n");
- fprintf(ofp, " -C, --ctrl-url=URL Set control path URL. (Must use -D also)\n");
- fprintf(ofp, " -D, --data-url=URL Set data path URL. (Must use -C also)\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Please refer to the man page (lttng(1)) for more information on network\n");
- fprintf(ofp, "streaming mechanisms and explanation of the control and data port\n");
- fprintf(ofp, "You must have a running remote lttng-relayd for network streaming\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "URL format is has followed:\n");
- fprintf(ofp, "\n");
- fprintf(ofp, " proto://[HOST|IP][:PORT1[:PORT2]][/TRACE_PATH]\n");
- fprintf(ofp, "\n");
- fprintf(ofp, " Supported protocols are (proto):\n");
- fprintf(ofp, " > file://...\n");
- fprintf(ofp, " Local filesystem full path.\n");
- fprintf(ofp, "\n");
- fprintf(ofp, " > net[6]://...\n");
- fprintf(ofp, " This will use the default network transport layer which is\n");
- fprintf(ofp, " TCP for both control (PORT1) and data port (PORT2).\n");
- fprintf(ofp, " The default ports are respectively 5342 and 5343.\n");
- fprintf(ofp, "\n");
- fprintf(ofp, " > tcp[6]://...\n");
- fprintf(ofp, " Can only be used with -C and -D together\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "NOTE: IPv6 address MUST be enclosed in brackets '[]' (rfc2732)\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Examples:\n");
- fprintf(ofp, " # lttng create -U net://192.168.1.42\n");
- fprintf(ofp, " Uses TCP and default ports for the given destination.\n");
- fprintf(ofp, " # lttng create -U net6://[fe80::f66d:4ff:fe53:d220]\n");
- fprintf(ofp, " Uses TCP, default ports and IPv6.\n");
- fprintf(ofp, " # lttng create s1 -U net://myhost.com:3229\n");
- fprintf(ofp, " Set the consumer to the remote HOST on port 3229 for control.\n");
- fprintf(ofp, "\n");
-}
-
/*
* Retrieve the created session and mi output it based on provided argument
* This is currently a summary of what was pretty printed and is subject to
{
int ret;
struct lttng_handle *handle;
- struct lttng_domain dom;
assert(session_name);
/*
- * Set handle with the session name and the domain set to 0. This means to
- * the session daemon that the next action applies on the tracing session
- * rather then the domain specific session.
+ * Set handle with the session_name, but no domain. This implies that
+ * the actions taken with this handle apply on the tracing session
+ * rather then the domain-specific session.
*/
- memset(&dom, 0, sizeof(dom));
-
- handle = lttng_create_handle(session_name, &dom);
+ handle = lttng_create_handle(session_name, NULL);
if (handle == NULL) {
ret = CMD_FATAL;
goto error;
/* Use default live URL if NO url is/are found. */
if ((opt_live_timer && !opt_url) && (opt_live_timer && !opt_data_url)) {
+ /* Override the url */
+ free(url);
+ url = NULL;
+
ret = asprintf(&alloc_url, "net://127.0.0.1");
if (ret < 0) {
PERROR("asprintf default live URL");
MSG("Traces will be written in %s", print_str_url);
if (opt_live_timer) {
- MSG("Live timer set to %u usec", opt_live_timer);
+ MSG("Live timer set to %u %s", opt_live_timer, USEC_UNIT);
}
} else if (opt_snapshot) {
if (print_str_url) {
MSG("Default snapshot output set to: %s", print_str_url);
}
MSG("Snapshot mode set. Every channel enabled for that session will "
- "be set in overwrite mode and mmap output.");
+ "be set to mmap output, and default to overwrite mode.");
}
if (opt_shm_path) {
MSG("Session %s set to shm_path: %s.", session_name,
return ret;
}
+int validate_url_option_combination(void)
+{
+ int ret = 0;
+ int used_count = 0;
+
+ used_count += !!opt_url;
+ used_count += !!opt_output_path;
+ used_count += (opt_data_url || opt_ctrl_url);
+ if (used_count > 1) {
+ ERR("Only one of the --set-url, --ctrl-url/data-url, or --output options may be used at once.");
+ ret = -1;
+ }
+
+ return ret;
+}
+
/*
* The 'create <options>' first level command
*
{
int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
char *opt_arg = NULL;
+ const char *leftover = NULL;
static poptContext pc;
pc = poptGetContext(NULL, argc, argv, long_options, 0);
goto end;
case OPT_LIVE_TIMER:
{
- unsigned long v;
+ uint64_t v;
errno = 0;
opt_arg = poptGetOptArg(pc);
break;
}
- v = strtoul(opt_arg, NULL, 0);
- if (errno != 0 || !isdigit(opt_arg[0])) {
- ERR("Wrong value in --live parameter: %s", opt_arg);
+ if (utils_parse_time_suffix(opt_arg, &v) < 0) {
+ ERR("Wrong value for --live parameter: %s", opt_arg);
ret = CMD_ERROR;
goto end;
}
+
if (v != (uint32_t) v) {
ERR("32-bit overflow in --live parameter: %s", opt_arg);
ret = CMD_ERROR;
goto end;
}
+
if (v == 0) {
ERR("Live timer interval must be greater than zero");
ret = CMD_ERROR;
goto end;
}
+
opt_live_timer = (uint32_t) v;
DBG("Session live timer interval set to %d", opt_live_timer);
break;
}
default:
- usage(stderr);
ret = CMD_UNDEFINED;
goto end;
}
goto end;
}
+ ret = validate_url_option_combination();
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
/* Spawn a session daemon if needed */
if (!opt_no_sessiond) {
ret = launch_sessiond();
}
opt_session_name = (char*) poptGetArg(pc);
+ leftover = poptGetArg(pc);
+ if (leftover) {
+ ERR("Unknown argument: %s", leftover);
+ ret = CMD_ERROR;
+ goto end;
+ }
+
command_ret = create_session();
if (command_ret) {
success = 0;
projects / lttng-tools.git / blobdiff