X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-consumerd%2Flttng-consumerd.c;h=dbcda885eede04a0a92a3189a975247de80ce4f2;hp=b43e8f1503869c857889f85ba177fd95357ec9b6;hb=HEAD;hpb=72f11bd7fc4530cd73cd26ee4aa1196d2b2774bd

diff --git a/src/bin/lttng-consumerd/lttng-consumerd.c b/src/bin/lttng-consumerd/lttng-consumerd.c
deleted file mode 100644
index b43e8f150..000000000
--- a/src/bin/lttng-consumerd/lttng-consumerd.c
+++ /dev/null
@@ -1,626 +0,0 @@
-/*
- * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
- *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * 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
- * 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
-#define _LGPL_SOURCE
-#include <fcntl.h>
-#include <getopt.h>
-#include <grp.h>
-#include <limits.h>
-#include <pthread.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ipc.h>
-#include <sys/resource.h>
-#include <sys/shm.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <urcu/list.h>
-#include <poll.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <assert.h>
-#include <config.h>
-#include <urcu/compiler.h>
-#include <ulimit.h>
-
-#include <common/defaults.h>
-#include <common/common.h>
-#include <common/consumer.h>
-#include <common/consumer-timer.h>
-#include <common/compat/poll.h>
-#include <common/sessiond-comm/sessiond-comm.h>
-#include <common/utils.h>
-
-#include "lttng-consumerd.h"
-#include "health-consumerd.h"
-
-/* threads (channel handling, poll, metadata, sessiond) */
-
-static pthread_t channel_thread, data_thread, metadata_thread,
-		sessiond_thread, metadata_timer_thread, health_thread;
-
-/* to count the number of times the user pressed ctrl+c */
-static int sigintcount = 0;
-
-/* Argument variables */
-int lttng_opt_quiet;    /* not static in error.h */
-int lttng_opt_verbose;  /* not static in error.h */
-int lttng_opt_mi;       /* not static in error.h */
-
-static int opt_daemon;
-static const char *progname;
-static char command_sock_path[PATH_MAX]; /* Global command socket path */
-static char error_sock_path[PATH_MAX]; /* Global error path */
-static enum lttng_consumer_type opt_type = LTTNG_CONSUMER_KERNEL;
-
-/* the liblttngconsumerd context */
-static struct lttng_consumer_local_data *ctx;
-
-/* Consumerd health monitoring */
-struct health_app *health_consumerd;
-
-const char *tracing_group_name = DEFAULT_TRACING_GROUP;
-
-int lttng_consumer_ready = NR_LTTNG_CONSUMER_READY;
-
-enum lttng_consumer_type lttng_consumer_get_type(void)
-{
-	if (!ctx) {
-		return LTTNG_CONSUMER_UNKNOWN;
-	}
-	return ctx->type;
-}
-
-/*
- * Signal handler for the daemon
- */
-static void sighandler(int sig)
-{
-	if (sig == SIGINT && sigintcount++ == 0) {
-		DBG("ignoring first SIGINT");
-		return;
-	}
-
-	/*
-	 * Ignore SIGPIPE because it should not stop the consumer whenever a
-	 * SIGPIPE is catched through a FD operation.
-	 */
-	if (sig == SIGPIPE) {
-		return;
-	}
-
-	lttng_consumer_should_exit(ctx);
-}
-
-/*
- * Setup signal handler for :
- *      SIGINT, SIGTERM, SIGPIPE
- */
-static int set_signal_handler(void)
-{
-	int ret = 0;
-	struct sigaction sa;
-	sigset_t sigset;
-
-	if ((ret = sigemptyset(&sigset)) < 0) {
-		PERROR("sigemptyset");
-		return ret;
-	}
-
-	sa.sa_handler = sighandler;
-	sa.sa_mask = sigset;
-	sa.sa_flags = 0;
-	if ((ret = sigaction(SIGTERM, &sa, NULL)) < 0) {
-		PERROR("sigaction");
-		return ret;
-	}
-
-	if ((ret = sigaction(SIGINT, &sa, NULL)) < 0) {
-		PERROR("sigaction");
-		return ret;
-	}
-
-	if ((ret = sigaction(SIGPIPE, &sa, NULL)) < 0) {
-		PERROR("sigaction");
-		return ret;
-	}
-
-	return ret;
-}
-
-/*
- * Usage function on stream file.
- */
-static void usage(FILE *fp)
-{
-	fprintf(fp, "Usage: %s OPTIONS\n\nOptions:\n", progname);
-	fprintf(fp, "  -h, --help                         "
-			"Display this usage.\n");
-	fprintf(fp, "  -c, --consumerd-cmd-sock PATH      "
-			"Specify path for the command socket\n");
-	fprintf(fp, "  -e, --consumerd-err-sock PATH      "
-			"Specify path for the error socket\n");
-	fprintf(fp, "  -d, --daemonize                    "
-			"Start as a daemon.\n");
-	fprintf(fp, "  -q, --quiet                        "
-			"No output at all.\n");
-	fprintf(fp, "  -v, --verbose                      "
-			"Verbose mode. Activate DBG() macro.\n");
-	fprintf(fp, "  -V, --version                      "
-			"Show version number.\n");
-	fprintf(fp, "  -g, --group NAME                   "
-			"Specify the tracing group name. (default: tracing)\n");
-	fprintf(fp, "  -k, --kernel                       "
-			"Consumer kernel buffers (default).\n");
-	fprintf(fp, "  -u, --ust                          "
-			"Consumer UST buffers.%s\n",
-#ifdef HAVE_LIBLTTNG_UST_CTL
-			""
-#else
-			" (support not compiled in)"
-#endif
-			);
-}
-
-/*
- * daemon argument parsing
- */
-static int parse_args(int argc, char **argv)
-{
-	int c, ret = 0;
-
-	static struct option long_options[] = {
-		{ "consumerd-cmd-sock", 1, 0, 'c' },
-		{ "consumerd-err-sock", 1, 0, 'e' },
-		{ "daemonize", 0, 0, 'd' },
-		{ "group", 1, 0, 'g' },
-		{ "help", 0, 0, 'h' },
-		{ "quiet", 0, 0, 'q' },
-		{ "verbose", 0, 0, 'v' },
-		{ "version", 0, 0, 'V' },
-		{ "kernel", 0, 0, 'k' },
-#ifdef HAVE_LIBLTTNG_UST_CTL
-		{ "ust", 0, 0, 'u' },
-#endif
-		{ NULL, 0, 0, 0 }
-	};
-
-	while (1) {
-		int option_index = 0;
-		c = getopt_long(argc, argv, "dhqvVku" "c:e:g:",
-				long_options, &option_index);
-		if (c == -1) {
-			break;
-		}
-
-		switch (c) {
-		case 0:
-			fprintf(stderr, "option %s",
-				long_options[option_index].name);
-			if (optarg) {
-				fprintf(stderr, " with arg %s\n", optarg);
-				ret = -1;
-				goto end;
-			}
-			break;
-		case 'c':
-			snprintf(command_sock_path, PATH_MAX, "%s", optarg);
-			break;
-		case 'e':
-			snprintf(error_sock_path, PATH_MAX, "%s", optarg);
-			break;
-		case 'd':
-			opt_daemon = 1;
-			break;
-		case 'g':
-			tracing_group_name = optarg;
-			break;
-		case 'h':
-			usage(stdout);
-			exit(EXIT_SUCCESS);
-		case 'q':
-			lttng_opt_quiet = 1;
-			break;
-		case 'v':
-			lttng_opt_verbose = 1;
-			break;
-		case 'V':
-			fprintf(stdout, "%s\n", VERSION);
-			exit(EXIT_SUCCESS);
-		case 'k':
-			opt_type = LTTNG_CONSUMER_KERNEL;
-			break;
-#ifdef HAVE_LIBLTTNG_UST_CTL
-		case 'u':
-# if (CAA_BITS_PER_LONG == 64)
-			opt_type = LTTNG_CONSUMER64_UST;
-# elif (CAA_BITS_PER_LONG == 32)
-			opt_type = LTTNG_CONSUMER32_UST;
-# else
-#  error "Unknown bitness"
-# endif
-			break;
-#endif
-		default:
-			usage(stderr);
-			ret = -1;
-			goto end;
-		}
-	}
-end:
-	return ret;
-}
-
-/*
- * Set open files limit to unlimited. This daemon can open a large number of
- * file descriptors in order to consumer multiple kernel traces.
- */
-static void set_ulimit(void)
-{
-	int ret;
-	struct rlimit lim;
-
-	/* The kernel does not allowed an infinite limit for open files */
-	lim.rlim_cur = 65535;
-	lim.rlim_max = 65535;
-
-	ret = setrlimit(RLIMIT_NOFILE, &lim);
-	if (ret < 0) {
-		PERROR("failed to set open files limit");
-	}
-}
-
-/*
- * main
- */
-int main(int argc, char **argv)
-{
-	int ret = 0, retval = 0;
-	void *status;
-
-	if (set_signal_handler()) {
-		retval = -1;
-		goto exit_set_signal_handler;
-	}
-
-	/* Parse arguments */
-	progname = argv[0];
-	if (parse_args(argc, argv)) {
-		retval = -1;
-		goto exit_options;
-	}
-
-	/* Daemonize */
-	if (opt_daemon) {
-		int i;
-
-		/*
-		 * fork
-		 * child: setsid, close FD 0, 1, 2, chdir /
-		 * parent: exit (if fork is successful)
-		 */
-		ret = daemon(0, 0);
-		if (ret < 0) {
-			PERROR("daemon");
-			retval = -1;
-			goto exit_options;
-		}
-		/*
-		 * We are in the child. Make sure all other file
-		 * descriptors are closed, in case we are called with
-		 * more opened file descriptors than the standard ones.
-		 */
-		for (i = 3; i < sysconf(_SC_OPEN_MAX); i++) {
-			(void) close(i);
-		}
-	}
-
-	/*
-	 * Starting from here, we can create threads. This needs to be after
-	 * lttng_daemonize due to RCU.
-	 */
-
-	health_consumerd = health_app_create(NR_HEALTH_CONSUMERD_TYPES);
-	if (!health_consumerd) {
-		retval = -1;
-		goto exit_health_consumerd_cleanup;
-	}
-
-	/* Set up max poll set size */
-	lttng_poll_set_max_size();
-
-	if (*command_sock_path == '\0') {
-		switch (opt_type) {
-		case LTTNG_CONSUMER_KERNEL:
-			ret = snprintf(command_sock_path, PATH_MAX,
-					DEFAULT_KCONSUMERD_CMD_SOCK_PATH,
-					DEFAULT_LTTNG_RUNDIR);
-			if (ret < 0) {
-				retval = -1;
-				goto exit_init_data;
-			}
-			break;
-		case LTTNG_CONSUMER64_UST:
-			ret = snprintf(command_sock_path, PATH_MAX,
-					DEFAULT_USTCONSUMERD64_CMD_SOCK_PATH,
-					DEFAULT_LTTNG_RUNDIR);
-			if (ret < 0) {
-				retval = -1;
-				goto exit_init_data;
-			}
-			break;
-		case LTTNG_CONSUMER32_UST:
-			ret = snprintf(command_sock_path, PATH_MAX,
-					DEFAULT_USTCONSUMERD32_CMD_SOCK_PATH,
-					DEFAULT_LTTNG_RUNDIR);
-			if (ret < 0) {
-				retval = -1;
-				goto exit_init_data;
-			}
-			break;
-		default:
-			ERR("Unknown consumerd type");
-			retval = -1;
-			goto exit_init_data;
-		}
-	}
-
-	/* Init */
-	if (lttng_consumer_init()) {
-		retval = -1;
-		goto exit_init_data;
-	}
-
-	/* Initialize communication library */
-	lttcomm_init();
-	/* Initialize TCP timeout values */
-	lttcomm_inet_init();
-
-	if (!getuid()) {
-		/* Set limit for open files */
-		set_ulimit();
-	}
-
-	/* create the consumer instance with and assign the callbacks */
-	ctx = lttng_consumer_create(opt_type, lttng_consumer_read_subbuffer,
-		NULL, lttng_consumer_on_recv_stream, NULL);
-	if (!ctx) {
-		retval = -1;
-		goto exit_init_data;
-	}
-
-	lttng_consumer_set_command_sock_path(ctx, command_sock_path);
-	if (*error_sock_path == '\0') {
-		switch (opt_type) {
-		case LTTNG_CONSUMER_KERNEL:
-			ret = snprintf(error_sock_path, PATH_MAX,
-					DEFAULT_KCONSUMERD_ERR_SOCK_PATH,
-					DEFAULT_LTTNG_RUNDIR);
-			if (ret < 0) {
-				retval = -1;
-				goto exit_init_data;
-			}
-			break;
-		case LTTNG_CONSUMER64_UST:
-			ret = snprintf(error_sock_path, PATH_MAX,
-					DEFAULT_USTCONSUMERD64_ERR_SOCK_PATH,
-					DEFAULT_LTTNG_RUNDIR);
-			if (ret < 0) {
-				retval = -1;
-				goto exit_init_data;
-			}
-			break;
-		case LTTNG_CONSUMER32_UST:
-			ret = snprintf(error_sock_path, PATH_MAX,
-					DEFAULT_USTCONSUMERD32_ERR_SOCK_PATH,
-					DEFAULT_LTTNG_RUNDIR);
-			if (ret < 0) {
-				retval = -1;
-				goto exit_init_data;
-			}
-			break;
-		default:
-			ERR("Unknown consumerd type");
-			retval = -1;
-			goto exit_init_data;
-		}
-	}
-
-	/* Connect to the socket created by lttng-sessiond to report errors */
-	DBG("Connecting to error socket %s", error_sock_path);
-	ret = lttcomm_connect_unix_sock(error_sock_path);
-	/*
-	 * Not a fatal error, but all communication with lttng-sessiond will
-	 * fail.
-	 */
-	if (ret < 0) {
-		WARN("Cannot connect to error socket (is lttng-sessiond started?)");
-	}
-	lttng_consumer_set_error_sock(ctx, ret);
-
-	/*
-	 * Block RT signals used for UST periodical metadata flush and the live
-	 * timer in main, and create a dedicated thread to handle these signals.
-	 */
-	if (consumer_signal_init()) {
-		retval = -1;
-		goto exit_init_data;
-	}
-
-	ctx->type = opt_type;
-
-	if (utils_create_pipe(health_quit_pipe)) {
-		retval = -1;
-		goto exit_health_pipe;
-	}
-
-	/* Create thread to manage the client socket */
-	ret = pthread_create(&health_thread, NULL,
-			thread_manage_health, (void *) NULL);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_create health");
-		retval = -1;
-		goto exit_health_thread;
-	}
-
-	/*
-	 * Wait for health thread to be initialized before letting the
-	 * sessiond thread reply to the sessiond that we are ready.
-	 */
-	while (uatomic_read(&lttng_consumer_ready)) {
-		usleep(100000);
-	}
-	cmm_smp_mb();	/* Read ready before following operations */
-
-	/* Create thread to manage channels */
-	ret = pthread_create(&channel_thread, NULL,
-			consumer_thread_channel_poll,
-			(void *) ctx);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_create");
-		retval = -1;
-		goto exit_channel_thread;
-	}
-
-	/* Create thread to manage the polling/writing of trace metadata */
-	ret = pthread_create(&metadata_thread, NULL,
-			consumer_thread_metadata_poll,
-			(void *) ctx);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_create");
-		retval = -1;
-		goto exit_metadata_thread;
-	}
-
-	/* Create thread to manage the polling/writing of trace data */
-	ret = pthread_create(&data_thread, NULL, consumer_thread_data_poll,
-			(void *) ctx);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_create");
-		retval = -1;
-		goto exit_data_thread;
-	}
-
-	/* Create the thread to manage the receive of fd */
-	ret = pthread_create(&sessiond_thread, NULL,
-			consumer_thread_sessiond_poll,
-			(void *) ctx);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_create");
-		retval = -1;
-		goto exit_sessiond_thread;
-	}
-
-	/*
-	 * Create the thread to manage the UST metadata periodic timer and
-	 * live timer.
-	 */
-	ret = pthread_create(&metadata_timer_thread, NULL,
-			consumer_timer_thread, (void *) ctx);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_create");
-		retval = -1;
-		goto exit_metadata_timer_thread;
-	}
-
-	ret = pthread_detach(metadata_timer_thread);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_detach");
-		retval = -1;
-		goto exit_metadata_timer_detach;
-	}
-
-	/*
-	 * This is where we start awaiting program completion (e.g. through
-	 * signal that asks threads to teardown.
-	 */
-
-exit_metadata_timer_detach:
-exit_metadata_timer_thread:
-	ret = pthread_join(sessiond_thread, &status);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_join sessiond_thread");
-		retval = -1;
-	}
-exit_sessiond_thread:
-
-	ret = pthread_join(data_thread, &status);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_join data_thread");
-		retval = -1;
-	}
-exit_data_thread:
-
-	ret = pthread_join(metadata_thread, &status);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_join metadata_thread");
-		retval = -1;
-	}
-exit_metadata_thread:
-
-	ret = pthread_join(channel_thread, &status);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_join channel_thread");
-		retval = -1;
-	}
-exit_channel_thread:
-
-	ret = pthread_join(health_thread, &status);
-	if (ret) {
-		errno = ret;
-		PERROR("pthread_join health_thread");
-		retval = -1;
-	}
-exit_health_thread:
-
-	utils_close_pipe(health_quit_pipe);
-exit_health_pipe:
-
-exit_init_data:
-	lttng_consumer_destroy(ctx);
-	lttng_consumer_cleanup();
-
-	if (health_consumerd) {
-		health_app_destroy(health_consumerd);
-	}
-exit_health_consumerd_cleanup:
-
-exit_options:
-
-exit_set_signal_handler:
-	if (!retval) {
-		exit(EXIT_SUCCESS);
-	} else {
-		exit(EXIT_FAILURE);
-	}
-}