/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * 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 the Free Software Foundation; only version 2
- * of the License.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
-#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
+#include <assert.h>
+
+#include <common/mi-lttng.h>
#include "../command.h"
static char *opt_session_name;
static int opt_userspace;
static int opt_disable_all;
-#if 0
-/* Not implemented yet */
-static char *opt_cmd_name;
-static pid_t opt_pid;
+static int opt_jul;
+static int opt_log4j;
+static int opt_python;
+static int opt_event_type;
+
+#ifdef LTTNG_EMBED_HELP
+static const char help_msg[] =
+#include <lttng-disable-event.1.h>
+;
#endif
enum {
OPT_HELP = 1,
- OPT_USERSPACE,
+ OPT_TYPE_SYSCALL,
+ OPT_TYPE_TRACEPOINT,
+ OPT_TYPE_PROBE,
+ OPT_TYPE_FUNCTION,
+ OPT_TYPE_ALL,
+ OPT_LIST_OPTIONS,
};
static struct lttng_handle *handle;
+static struct mi_writer *writer;
static struct poptOption long_options[] = {
/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
{"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
{"all-events", 'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
{"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
+ {"jul", 'j', POPT_ARG_VAL, &opt_jul, 1, 0, 0},
+ {"log4j", 'l', POPT_ARG_VAL, &opt_log4j, 1, 0, 0},
+ {"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0},
{"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
-#if 0
- /* Not implemented yet */
- {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
- {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
-#else
- {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
-#endif
+ {"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
+ {"syscall", 0, POPT_ARG_NONE, 0, OPT_TYPE_SYSCALL, 0, 0},
+ {"probe", 0, POPT_ARG_NONE, 0, OPT_TYPE_PROBE, 0, 0},
+ {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TYPE_TRACEPOINT, 0, 0},
+ {"function", 0, POPT_ARG_NONE, 0, OPT_TYPE_FUNCTION, 0, 0},
+ {"all", 0, POPT_ARG_NONE, 0, OPT_TYPE_ALL, 0, 0},
+ {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
{0, 0, 0, 0, 0, 0, 0}
};
-/*
- * usage
+static
+const char *print_channel_name(const char *name)
+{
+ return name ? : DEFAULT_CHANNEL_NAME;
+}
+
+static
+const char *print_raw_channel_name(const char *name)
+{
+ return name ? : "<default>";
+}
+
+static
+const char *print_event_type(const enum lttng_event_type ev_type)
+{
+ switch (ev_type) {
+ case LTTNG_EVENT_ALL:
+ return "any";
+ case LTTNG_EVENT_TRACEPOINT:
+ return "tracepoint";
+ case LTTNG_EVENT_PROBE:
+ return "probe";
+ case LTTNG_EVENT_FUNCTION:
+ return "function";
+ case LTTNG_EVENT_FUNCTION_ENTRY:
+ return "function entry";
+ case LTTNG_EVENT_SYSCALL:
+ return "syscall";
+ default:
+ return "";
+ }
+}
+
+/* Mi print a partial event.
+ * enabled is 0 or 1
+ * success is 0 or 1
*/
-static void usage(FILE *ofp)
+static int mi_print_event(const char *event_name, int enabled, int success)
{
- fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] [options]\n");
- fprintf(ofp, "\n");
- fprintf(ofp, " -h, --help Show this help\n");
- fprintf(ofp, " -s, --session Apply on session name\n");
- fprintf(ofp, " -c, --channel Apply on this channel\n");
- fprintf(ofp, " -a, --all-events Disable all tracepoints\n");
- fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n");
-#if 0
- fprintf(ofp, " -u, --userspace [CMD] Apply for the user-space tracer\n");
- fprintf(ofp, " If no CMD, the domain used is UST global\n");
- fprintf(ofp, " or else the domain is UST EXEC_NAME\n");
- fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\n");
-#else
- fprintf(ofp, " -u, --userspace Apply for the user-space tracer\n");
-#endif
- fprintf(ofp, "\n");
+ int ret;
+
+ assert(writer);
+ assert(event_name);
+
+ /* Open event element */
+ ret = mi_lttng_writer_open_element(writer, config_element_event);
+ if (ret) {
+ goto end;
+ }
+
+ /* Print the name of event */
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_name, event_name);
+ if (ret) {
+ goto end;
+ }
+
+ /* Print enabled ? */
+ ret = mi_lttng_writer_write_element_bool(writer,
+ config_element_enabled, enabled);
+ if (ret) {
+ goto end;
+ }
+
+ /* Success ? */
+ ret = mi_lttng_writer_write_element_bool(writer,
+ mi_lttng_element_command_success, success);
+ if (ret) {
+ goto end;
+ }
+
+ /* Close event element */
+ ret = mi_lttng_writer_close_element(writer);
+end:
+ return ret;
}
/*
*/
static int disable_events(char *session_name)
{
- int err, ret = CMD_SUCCESS;
+ int ret = CMD_SUCCESS, warn = 0, command_ret = CMD_SUCCESS;
+ int enabled = 1, success = 1;
char *event_name, *channel_name = NULL;
struct lttng_domain dom;
+ struct lttng_event event;
- if (opt_channel_name == NULL) {
- err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME);
- if (err < 0) {
- ret = CMD_FATAL;
- goto error;
- }
- } else {
- channel_name = opt_channel_name;
- }
-
- if (opt_kernel && opt_userspace) {
- ERR("Can't use -k/--kernel and -u/--userspace together");
- ret = CMD_FATAL;
- goto error;
- }
+ memset(&dom, 0, sizeof(dom));
/* Create lttng domain */
if (opt_kernel) {
dom.type = LTTNG_DOMAIN_KERNEL;
} else if (opt_userspace) {
dom.type = LTTNG_DOMAIN_UST;
+ } else if (opt_jul) {
+ dom.type = LTTNG_DOMAIN_JUL;
+ } else if (opt_log4j) {
+ dom.type = LTTNG_DOMAIN_LOG4J;
+ } else if (opt_python) {
+ dom.type = LTTNG_DOMAIN_PYTHON;
} else {
- ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
- ret = CMD_UNDEFINED;
- goto error;
+ /* Checked by the caller. */
+ assert(0);
}
+ channel_name = opt_channel_name;
+
handle = lttng_create_handle(session_name, &dom);
if (handle == NULL) {
ret = -1;
goto error;
}
- if (opt_disable_all) {
- ret = lttng_disable_event(handle, NULL, channel_name);
- if (ret < 0) {
- goto error;
+ /* Mi print the channel and open the events element */
+ if (lttng_opt_mi) {
+ ret = mi_lttng_writer_open_element(writer, config_element_channel);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
}
- MSG("All %s events are disabled in channel %s",
- opt_kernel ? "kernel" : "UST", channel_name);
- goto end;
+ ret = mi_lttng_writer_write_element_string(writer,
+ config_element_name, print_channel_name(channel_name));
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Open events element */
+ ret = mi_lttng_writer_open_element(writer, config_element_events);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
}
- /* Strip event list */
- event_name = strtok(opt_event_list, ",");
- while (event_name != NULL) {
- /* Kernel tracer action */
- if (opt_kernel) {
- DBG("Disabling kernel event %s in channel %s",
- event_name, channel_name);
- } else if (opt_userspace) { /* User-space tracer action */
-#if 0
- if (opt_cmd_name != NULL || opt_pid) {
- MSG("Only supporting tracing all UST processes (-u) for now.");
- ret = CMD_UNDEFINED;
- goto error;
- }
-#endif
- DBG("Disabling UST event %s in channel %s",
- event_name, channel_name);
+ memset(&event, 0, sizeof(event));
+ /* Set default loglevel to any/unknown */
+ event.loglevel = -1;
+
+ /* opt_event_type contain the event type to disable at this point */
+ event.type = opt_event_type;
+
+ if (opt_disable_all) {
+ command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
+ if (command_ret < 0) {
+ ERR("%s", lttng_strerror(command_ret));
+ enabled = 1;
+ success = 0;
+
} else {
- ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
- goto error;
+ enabled = 0;
+ success = 1;
+ MSG("All %s events of type %s are disabled in channel %s",
+ get_domain_str(dom.type),
+ print_event_type(opt_event_type),
+ print_channel_name(channel_name));
}
- ret = lttng_disable_event(handle, event_name, channel_name);
- if (ret < 0) {
- MSG("Unable to disable %s event %s in channel %s",
- opt_kernel ? "kernel" : "UST", event_name,
- channel_name);
- } else {
- MSG("%s event %s disabled in channel %s",
- opt_kernel ? "kernel" : "UST", event_name,
- channel_name);
+ if (lttng_opt_mi) {
+ ret = mi_print_event("*", enabled, success);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto error;
+ }
}
+ } else {
+ /* Strip event list */
+ event_name = strtok(opt_event_list, ",");
+ while (event_name != NULL) {
+ DBG("Disabling event %s", event_name);
+
+ strncpy(event.name, event_name, sizeof(event.name));
+ event.name[sizeof(event.name) - 1] = '\0';
+ command_ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
+ if (command_ret < 0) {
+ ERR("%s of type %s : %s (channel %s, session %s)",
+ event_name,
+ print_event_type(opt_event_type),
+ lttng_strerror(command_ret),
+ command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
+ ? print_raw_channel_name(channel_name)
+ : print_channel_name(channel_name),
+ session_name);
+ warn = 1;
+ success = 0;
+ /*
+ * If an error occurred we assume that the event is still
+ * enabled.
+ */
+ enabled = 1;
+ } else {
+ MSG("%s %s of type %s disabled in channel %s for session %s",
+ get_domain_str(dom.type),
+ event_name,
+ print_event_type(opt_event_type),
+ print_channel_name(channel_name),
+ session_name);
+ success = 1;
+ enabled = 0;
+ }
- /* Next event */
- event_name = strtok(NULL, ",");
+ if (lttng_opt_mi) {
+ ret = mi_print_event(event_name, enabled, success);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+ }
+
+ /* Next event */
+ event_name = strtok(NULL, ",");
+ }
}
end:
+ if (lttng_opt_mi) {
+ /* Close events element and channel element */
+ ret = mi_lttng_close_multi_element(writer, 2);
+ if (ret) {
+ ret = CMD_ERROR;
+ }
+ }
error:
- if (opt_channel_name == NULL) {
- free(channel_name);
+ /* if there is already an error preserve it */
+ if (warn && !ret) {
+ ret = CMD_WARNING;
}
- lttng_destroy_handle(handle);
+ /* Overwrite ret if an error occurred */
+ ret = command_ret ? command_ret : ret;
+
+ lttng_destroy_handle(handle);
return ret;
}
*/
int cmd_disable_events(int argc, const char **argv)
{
- int opt, ret;
+ int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
static poptContext pc;
char *session_name = NULL;
+ const char *leftover = NULL;
+ int event_type = -1;
pc = poptGetContext(NULL, argc, argv, long_options, 0);
poptReadDefaultConfig(pc, 0);
+ /* Default event type */
+ opt_event_type = LTTNG_EVENT_ALL;
+
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_HELP:
- usage(stderr);
- ret = CMD_SUCCESS;
+ SHOW_HELP();
goto end;
- case OPT_USERSPACE:
- opt_userspace = 1;
+ case OPT_TYPE_SYSCALL:
+ opt_event_type = LTTNG_EVENT_SYSCALL;
+ break;
+ case OPT_TYPE_TRACEPOINT:
+ opt_event_type = LTTNG_EVENT_TRACEPOINT;
+ break;
+ case OPT_TYPE_PROBE:
+ opt_event_type = LTTNG_EVENT_PROBE;
break;
+ case OPT_TYPE_FUNCTION:
+ opt_event_type = LTTNG_EVENT_FUNCTION;
+ break;
+ case OPT_TYPE_ALL:
+ opt_event_type = LTTNG_EVENT_ALL;
+ break;
+ case OPT_LIST_OPTIONS:
+ list_cmd_options(stdout, long_options);
+ goto end;
default:
- usage(stderr);
ret = CMD_UNDEFINED;
goto end;
}
+
+ /* Validate event type. Multiple event type are not supported. */
+ if (event_type == -1) {
+ event_type = opt_event_type;
+ } else {
+ if (event_type != opt_event_type) {
+ ERR("Multiple event type not supported.");
+ ret = CMD_ERROR;
+ goto end;
+ }
+ }
+ }
+
+ ret = print_missing_or_multiple_domains(
+ opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Ust and agent only support ALL event type */
+ if ((opt_userspace || opt_jul || opt_log4j || opt_python)
+ && opt_event_type != LTTNG_EVENT_ALL) {
+ ERR("Disabling userspace and agent (-j | -l | -p) event(s) based on instrumentation type is not supported.\n");
+ ret = CMD_ERROR;
+ goto end;
}
opt_event_list = (char*) poptGetArg(pc);
if (opt_event_list == NULL && opt_disable_all == 0) {
ERR("Missing event name(s).\n");
- usage(stderr);
- ret = CMD_SUCCESS;
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ leftover = poptGetArg(pc);
+ if (leftover) {
+ ERR("Unknown argument: %s", leftover);
+ ret = CMD_ERROR;
goto end;
}
if (!opt_session_name) {
session_name = get_session_name();
if (session_name == NULL) {
- ret = -1;
+ ret = CMD_ERROR;
goto end;
}
} else {
session_name = opt_session_name;
}
- ret = disable_events(session_name);
+ /* Mi check */
+ if (lttng_opt_mi) {
+ writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
+ if (!writer) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ /* Open command element */
+ ret = mi_lttng_writer_command_open(writer,
+ mi_lttng_element_command_disable_event);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Open output element */
+ ret = mi_lttng_writer_open_element(writer,
+ mi_lttng_element_command_output);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+ }
+
+ command_ret = disable_events(session_name);
+ if (command_ret) {
+ success = 0;
+ }
+
+ /* Mi closing */
+ if (lttng_opt_mi) {
+ /* Close output element */
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ ret = mi_lttng_writer_write_element_bool(writer,
+ mi_lttng_element_command_success, success);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+
+ /* Command element close */
+ ret = mi_lttng_writer_command_close(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+ }
end:
+ if (!opt_session_name && session_name) {
+ free(session_name);
+ }
+
+ /* Mi clean-up */
+ if (writer && mi_lttng_writer_destroy(writer)) {
+ /* Preserve original error code */
+ ret = ret ? ret : LTTNG_ERR_MI_IO_FAIL;
+ }
+
+ /* Overwrite ret if an error occurred in disable_events */
+ ret = command_ret ? command_ret : ret;
+
+ poptFreeContext(pc);
return ret;
}
projects / lttng-tools.git / blobdiff