/*
* Disable event(s) of a channel and domain.
* If no event name is specified, all events are disabled.
* If no channel name is specified, the default 'channel0' is used.
* Returns size of returned session payload data or a negative error code.
*/
int lttng_disable_event(struct lttng_handle *handle, const char *name,
const char *channel_name)
{
struct lttng_event ev;
memset(&ev, 0, sizeof(ev));
ev.loglevel = -1;
ev.type = LTTNG_EVENT_ALL;
lttng_ctl_copy_string(ev.name, name, sizeof(ev.name));
return lttng_disable_event_ext(handle, &ev, channel_name, NULL);
}
/*
* disable_events
*
* Disabling event using the lttng API.
*/
static int disable_events(char *session_name)
{
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;
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 {
/* 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;
}
/* 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;
}
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;
}
}
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 {
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));
}
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;
}
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 there is already an error preserve it */
if (warn && !ret) {
ret = CMD_WARNING;
}
/* Overwrite ret if an error occurred */
ret = command_ret ? command_ret : ret;
lttng_destroy_handle(handle);
return ret;
}
