/*
* 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.
+ * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * 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 <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
+#include <assert.h>
-#include "../cmd.h"
-#include "../conf.h"
-#include "../utils.h"
+#include <common/mi-lttng.h>
+
+#include "../command.h"
static char *opt_event_list;
static int opt_kernel;
static char *opt_channel_name;
static char *opt_session_name;
static int opt_userspace;
-static char *opt_cmd_name;
static int opt_disable_all;
+static int opt_jul;
+#if 0
+/* Not implemented yet */
+static char *opt_cmd_name;
static pid_t opt_pid;
+#endif
enum {
OPT_HELP = 1,
OPT_USERSPACE,
+ 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},
{"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
+ {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
{0, 0, 0, 0, 0, 0, 0}
};
*/
static void usage(FILE *ofp)
{
- fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] [options]\n");
+ fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] (-k | -u) [OPTIONS]\n");
fprintf(ofp, "\n");
+ fprintf(ofp, "Options:\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, " --list-options Simple listing of options\n");
+ fprintf(ofp, " -s, --session NAME Apply to session name\n");
+ fprintf(ofp, " -c, --channel NAME Apply to this channel\n");
fprintf(ofp, " -a, --all-events Disable all tracepoints\n");
fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n");
- 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");
+ fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n");
+ fprintf(ofp, " -j, --jul Apply for Java application using JUL\n");
fprintf(ofp, "\n");
}
+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>";
+}
+
+/* Mi print a partial event.
+ * enabled is 0 or 1
+ * success is 0 or 1
+ */
+static int mi_print_event(char *event_name, int enabled, int success)
+{
+ 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;
+}
+
/*
* disable_events
*
*/
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;
- 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_pid != 0) {
- dom.type = LTTNG_DOMAIN_UST_PID;
- dom.attr.pid = opt_pid;
- DBG("PID %d set to lttng handle", opt_pid);
- } else if (opt_userspace && opt_cmd_name == NULL) {
+ } else if (opt_userspace) {
dom.type = LTTNG_DOMAIN_UST;
- DBG("UST global domain selected");
- } else if (opt_userspace && opt_cmd_name != NULL) {
- dom.type = LTTNG_DOMAIN_UST_EXEC_NAME;
- strncpy(dom.attr.exec_name, opt_cmd_name, NAME_MAX);
- dom.attr.exec_name[NAME_MAX - 1] = '\0';
+ } else if (opt_jul) {
+ dom.type = LTTNG_DOMAIN_JUL;
} else {
- ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
- ret = CMD_NOT_IMPLEMENTED;
+ print_missing_domain();
+ ret = CMD_ERROR;
goto error;
}
+ 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 (opt_cmd_name != NULL || opt_pid) {
- MSG("Only supporting tracing all UST processes (-u) for now.");
- ret = CMD_NOT_IMPLEMENTED;
- goto error;
- }
- DBG("Disabling UST event %s in channel %s",
- event_name, channel_name);
+ if (opt_disable_all) {
+ command_ret = lttng_disable_event(handle, NULL, channel_name);
+ 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 are disabled in channel %s",
+ get_domain_str(dom.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);
+
+ command_ret = lttng_disable_event(handle, event_name, channel_name);
+ if (command_ret < 0) {
+ ERR("Event %s: %s (channel %s, session %s)", event_name,
+ 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 event %s disabled in channel %s for session %s",
+ get_domain_str(dom.type), event_name,
+ 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;
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_HELP:
- usage(stderr);
- ret = CMD_SUCCESS;
+ usage(stdout);
goto end;
case OPT_USERSPACE:
opt_userspace = 1;
break;
+ case OPT_LIST_OPTIONS:
+ list_cmd_options(stdout, long_options);
+ goto end;
default:
usage(stderr);
ret = CMD_UNDEFINED;
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;
}
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 occured in disable_events */
+ ret = command_ret ? command_ret : ret;
+
+ poptFreeContext(pc);
return ret;
}
projects / lttng-tools.git / blobdiff