X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;ds=sidebyside;f=lttng%2Flttng.c;fp=lttng%2Flttng.c;h=0000000000000000000000000000000000000000;hb=10a8a2237343699e3923d87e24dbf2d7fe225377;hp=69b563d4a643eb80db6718673602ebe67efb9c4b;hpb=734f79bf717d87817623d382c59086dc9e8ef610;p=lttng-tools.git

diff --git a/lttng/lttng.c b/lttng/lttng.c
deleted file mode 100644
index 69b563d4a..000000000
--- a/lttng/lttng.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/*
- * 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.
- *
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#define _GNU_SOURCE
-#include <getopt.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <config.h>
-
-#include <lttng/lttng.h>
-
-#include "cmd.h"
-#include "conf.h"
-#include "lttngerr.h"
-
-/* Variables */
-static char *progname;
-
-int opt_quiet;
-int opt_verbose;
-static int opt_no_sessiond;
-static char *opt_sessiond_path;
-
-enum {
-	OPT_SESSION_PATH,
-	OPT_DUMP_OPTIONS,
-	OPT_DUMP_COMMANDS,
-};
-
-/* Getopt options. No first level command. */
-static struct option long_options[] = {
-	{"help",             0, NULL, 'h'},
-	{"group",            1, NULL, 'g'},
-	{"verbose",          0, NULL, 'v'},
-	{"quiet",            0, NULL, 'q'},
-	{"no-sessiond",      0, NULL, 'n'},
-	{"sessiond-path",    1, NULL, OPT_SESSION_PATH},
-	{"list-options",     0, NULL, OPT_DUMP_OPTIONS},
-	{"list-commands",    0, NULL, OPT_DUMP_COMMANDS},
-	{NULL, 0, NULL, 0}
-};
-
-/* First level command */
-static struct cmd_struct commands[] =  {
-	{ "list", cmd_list},
-	{ "create", cmd_create},
-	{ "destroy", cmd_destroy},
-	{ "start", cmd_start},
-	{ "stop", cmd_stop},
-	{ "enable-event", cmd_enable_events},
-	{ "disable-event", cmd_disable_events},
-	{ "enable-channel", cmd_enable_channels},
-	{ "disable-channel", cmd_disable_channels},
-	{ "add-context", cmd_add_context},
-	{ "set-session", cmd_set_session},
-	{ "version", cmd_version},
-	{ "calibrate", cmd_calibrate},
-	{ 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, "\n");
-	fprintf(ofp, "Options:\n");
-	fprintf(ofp, "  -h, --help             Show this help\n");
-	fprintf(ofp, "  -g, --group NAME       Unix tracing group name. (default: tracing)\n");
-	fprintf(ofp, "  -v, --verbose          Verbose mode\n");
-	fprintf(ofp, "  -q, --quiet            Quiet mode\n");
-	fprintf(ofp, "  -n, --no-sessiond      Don't spawn a session daemon\n");
-	fprintf(ofp, "      --sessiond-path    Session daemon full path\n");
-	fprintf(ofp, "      --list-options     Simple listing of lttng options\n");
-	fprintf(ofp, "      --list-commands    Simple listing of lttng commands\n");
-	fprintf(ofp, "\n");
-	fprintf(ofp, "Commands:\n");
-	fprintf(ofp, "    add-context     Add context to event or/and channel\n");
-	fprintf(ofp, "    calibrate       Quantify LTTng overhead\n");
-	fprintf(ofp, "    create          Create tracing session\n");
-	fprintf(ofp, "    destroy         Teardown 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, "\n");
-	fprintf(ofp, "Please see the lttng(1) man page for full documentation.\n");
-	fprintf(ofp, "See http://lttng.org for updates, bug reports and news.\n");
-}
-
-/*
- *  list_options
- *
- *  List options line by line. This is mostly for bash auto completion and to
- *  avoid difficult parsing.
- */
-static void list_options(FILE *ofp)
-{
-	int i = 0;
-	struct option *option = NULL;
-
-	option = &long_options[i];
-	while (option->name != NULL) {
-		fprintf(ofp, "--%s\n", option->name);
-
-		if (isprint(option->val)) {
-			fprintf(ofp, "-%c\n", option->val);
-		}
-
-		i++;
-		option = &long_options[i];
-	}
-}
-
-/*
- *  list_commands
- *
- *  List commands line by line. This is mostly for bash auto completion and to
- *  avoid difficult parsing.
- */
-static void list_commands(FILE *ofp)
-{
-	int i = 0;
-	struct cmd_struct *cmd = NULL;
-
-	cmd = &commands[i];
-	while (cmd->name != NULL) {
-		fprintf(ofp, "%s\n", cmd->name);
-		i++;
-		cmd = &commands[i];
-	}
-}
-
-/*
- * clean_exit
- */
-static void clean_exit(int code)
-{
-	DBG("Clean exit");
-	exit(code);
-}
-
-/*
- *  sighandler
- *
- *  Signal handler for the daemon
- */
-static void sighandler(int sig)
-{
-	switch (sig) {
-		case SIGTERM:
-			DBG("SIGTERM catched");
-			clean_exit(EXIT_FAILURE);
-			break;
-		case SIGCHLD:
-			/* Notify is done */
-			DBG("SIGCHLD catched");
-			break;
-		default:
-			DBG("Unknown signal %d catched", sig);
-			break;
-	}
-
-	return;
-}
-
-/*
- *  set_signal_handler
- *
- *  Setup signal handler for SIGCHLD and SIGTERM.
- */
-static int set_signal_handler(void)
-{
-	int ret = 0;
-	struct sigaction sa;
-	sigset_t sigset;
-
-	if ((ret = sigemptyset(&sigset)) < 0) {
-		perror("sigemptyset");
-		goto end;
-	}
-
-	sa.sa_handler = sighandler;
-	sa.sa_mask = sigset;
-	sa.sa_flags = 0;
-	if ((ret = sigaction(SIGCHLD, &sa, NULL)) < 0) {
-		perror("sigaction");
-		goto end;
-	}
-
-	if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) {
-		perror("sigaction");
-		goto end;
-	}
-
-end:
-	return ret;
-}
-
-/*
- *  handle_command
- *
- *  Handle the full argv list of a first level command. Will find the command
- *  in the global commands array and call the function callback associated.
- *
- *  If command not found, return -1
- *  else, return function command error code.
- */
-static int handle_command(int argc, char **argv)
-{
-	int i = 0, ret;
-	struct cmd_struct *cmd;
-
-	if (*argv == NULL) {
-		ret = CMD_SUCCESS;
-		goto end;
-	}
-
-	cmd = &commands[i];
-	while (cmd->func != NULL) {
-		/* Find command */
-		if (strcmp(argv[0], cmd->name) == 0) {
-			ret = cmd->func(argc, (const char**) argv);
-			switch (ret) {
-			case CMD_ERROR:
-				ERR("Command error");
-				break;
-			case CMD_NOT_IMPLEMENTED:
-				ERR("Options not implemented");
-				break;
-			case CMD_UNDEFINED:
-				ERR("Undefined command");
-				break;
-			case CMD_FATAL:
-				ERR("Fatal error");
-				break;
-			}
-			goto end;
-		}
-		i++;
-		cmd = &commands[i];
-	}
-
-	/* Command not found */
-	ret = -1;
-
-end:
-	return ret;
-}
-
-/*
- *  spawn_sessiond
- *
- *  Spawn a session daemon by forking and execv.
- */
-static int spawn_sessiond(char *pathname)
-{
-	int ret = 0;
-	pid_t pid;
-
-	MSG("Spawning a session daemon");
-	pid = fork();
-	if (pid == 0) {
-		/*
-		 * Spawn session daemon and tell
-		 * it to signal us when ready.
-		 */
-		execlp(pathname, "lttng-sessiond", "--sig-parent", "--quiet", NULL);
-		/* execlp only returns if error happened */
-		if (errno == ENOENT) {
-			ERR("No session daemon found. Use --sessiond-path.");
-		} else {
-			perror("execlp");
-		}
-		kill(getppid(), SIGTERM);	/* unpause parent */
-		exit(EXIT_FAILURE);
-	} else if (pid > 0) {
-		/* Wait for lttng-sessiond to start */
-		pause();
-		goto end;
-	} else {
-		perror("fork");
-		ret = -1;
-		goto end;
-	}
-
-end:
-	return ret;
-}
-
-/*
- *  check_sessiond
- *
- *  Check if the session daemon is available using
- *  the liblttngctl API for the check. If not, try to
- *  spawn a daemon.
- */
-static int check_sessiond(void)
-{
-	int ret;
-	char *pathname = NULL, *alloc_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: %s", opt_sessiond_path);
-				goto end;
-			}
-			pathname = opt_sessiond_path;
-		} else {
-			/* Try LTTNG_SESSIOND_PATH env variable */
-			pathname = getenv(LTTNG_SESSIOND_PATH_ENV);
-		}
-
-		/* Let's rock and roll */
-		if (pathname == NULL) {
-			ret = asprintf(&alloc_pathname, INSTALL_BIN_PATH "/lttng-sessiond");
-			if (ret < 0) {
-				perror("asprintf spawn sessiond");
-				goto end;
-			}
-			pathname = alloc_pathname;
-		}
-
-		ret = spawn_sessiond(pathname);
-		free(alloc_pathname);
-		if (ret < 0) {
-			ERR("Problem occurs when starting %s", pathname);
-			goto end;
-		}
-	}
-
-end:
-	return ret;
-}
-
-/*
- * Check for the "help" option in the argv. If found, return 1 else return 0.
- */
-static int check_help_command(int argc, char **argv)
-{
-	int i;
-
-	for (i = 0; i < argc; i++) {
-		if ((strncmp(argv[i], "-h", 2) == 0) ||
-				strncmp(argv[i], "--h", 3) == 0) {
-			return 1;
-		}
-	}
-
-	return 0;
-}
-
-/*
- *  parse_args
- *
- *  Parse command line arguments.
- *  Return 0 if OK, else -1
- */
-static int parse_args(int argc, char **argv)
-{
-	int opt, ret;
-
-	if (argc < 2) {
-		usage(stderr);
-		clean_exit(EXIT_FAILURE);
-	}
-
-	while ((opt = getopt_long(argc, argv, "+hnvqg:", long_options, NULL)) != -1) {
-		switch (opt) {
-		case 'h':
-			usage(stderr);
-			goto error;
-		case 'v':
-			opt_verbose += 1;
-			break;
-		case 'q':
-			opt_quiet = 1;
-			break;
-		case 'g':
-			lttng_set_tracing_group(optarg);
-			break;
-		case 'n':
-			opt_no_sessiond = 1;
-			break;
-		case OPT_SESSION_PATH:
-			opt_sessiond_path = strdup(optarg);
-			break;
-		case OPT_DUMP_OPTIONS:
-			list_options(stdout);
-			ret = 0;
-			goto error;
-		case OPT_DUMP_COMMANDS:
-			list_commands(stdout);
-			ret = 0;
-			goto error;
-		default:
-			usage(stderr);
-			goto error;
-		}
-	}
-
-	/* If both options are specified, quiet wins */
-	if (opt_verbose && opt_quiet) {
-		opt_verbose = 0;
-	}
-
-	/* Spawn session daemon if needed */
-	if (opt_no_sessiond == 0 && check_help_command(argc, argv) == 0 &&
-			(check_sessiond() < 0)) {
-		goto error;
-	}
-
-	/* No leftovers, print usage and quit */
-	if ((argc - optind) == 0) {
-		usage(stderr);
-		goto error;
-	}
-
-	/* 
-	 * Handle leftovers which is a first level command with the trailing
-	 * options.
-	 */
-	ret = handle_command(argc - optind, argv + optind);
-	if (ret < 0) {
-		if (ret == -1) {
-			usage(stderr);
-		} else {
-			ERR("%s", lttng_strerror(ret));
-		}
-		goto error;
-	}
-
-	return 0;
-
-error:
-	return -1;
-}
-
-
-/*
- *  main
- */
-int main(int argc, char *argv[])
-{
-	int ret;
-
-	progname = argv[0] ? argv[0] : "lttng";
-
-	/* For Mathieu Desnoyers aka Dr Tracing */
-	if (strncmp(progname, "drtrace", 7) == 0) {
-		MSG("%c[%d;%dmWelcome back Dr Tracing!%c[%dm\n\n", 27,1,33,27,0);
-	}
-
-	ret = set_signal_handler();
-	if (ret < 0) {
-		clean_exit(ret);
-	}
-
-	ret = parse_args(argc, argv);
-	if (ret < 0) {
-		clean_exit(EXIT_FAILURE);
-	}
-
-	return 0;
-}