/*
+ * liblttngctl.c
+ *
+ * Linux Trace Toolkit Control Library
+ *
* 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; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library 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.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define _GNU_SOURCE
return ret;
}
+/*
+ * Reset the session message structure.
+ */
+static void reset_session_msg(void)
+{
+ memset(&lsm, 0, sizeof(struct lttcomm_session_msg));
+}
+
/*
* ask_sessiond
*
size = llm.data_size;
if (size == 0) {
+ ret = 0;
goto end;
}
end:
disconnect_sessiond();
+ reset_session_msg();
return ret;
}
/*
- * lttng_start_tracing
- *
* Start tracing for all trace of the session.
*/
-int lttng_start_tracing(char *session_name)
+int lttng_start_tracing(const char *session_name)
{
strncpy(lsm.session_name, session_name, NAME_MAX);
return ask_sessiond(LTTNG_START_TRACE, NULL);
}
/*
- * lttng_stop_tracing
- *
* Stop tracing for all trace of the session.
*/
-int lttng_stop_tracing(char *session_name)
+int lttng_stop_tracing(const char *session_name)
{
strncpy(lsm.session_name, session_name, NAME_MAX);
return ask_sessiond(LTTNG_STOP_TRACE, NULL);
}
/*
- * BEGIN Kernel control API
- */
-
-/*
- * lttng_kernel_add_context
+ * lttng_add_context
*/
-int lttng_kernel_add_context(struct lttng_kernel_context *ctx,
- char *event_name, char *channel_name)
+int lttng_add_context(struct lttng_domain *domain,
+ struct lttng_event_context *ctx, const char *event_name,
+ const char *channel_name)
{
+ int ret;
+
if (channel_name != NULL) {
strncpy(lsm.u.context.channel_name, channel_name, NAME_MAX);
}
strncpy(lsm.u.context.event_name, event_name, NAME_MAX);
}
- memcpy(&lsm.u.context.ctx, ctx, sizeof(struct lttng_kernel_context));
- return ask_sessiond(LTTNG_KERNEL_ADD_CONTEXT, NULL);
+ memcpy(&lsm.u.context.ctx, ctx, sizeof(struct lttng_event_context));
+
+ switch (domain->type) {
+ case LTTNG_DOMAIN_KERNEL:
+ ret = ask_sessiond(LTTNG_KERNEL_ADD_CONTEXT, NULL);
+ break;
+ case LTTNG_DOMAIN_UST:
+ ret = LTTCOMM_NOT_IMPLEMENTED;
+ break;
+ default:
+ ret = LTTCOMM_UNKNOWN_DOMAIN;
+ break;
+ };
+
+ return ret;
}
/*
- * lttng_kernel_enable_event
+ * lttng_enable_event
*/
-int lttng_kernel_enable_event(struct lttng_event *ev, char *channel_name)
+int lttng_enable_event(struct lttng_domain *domain,
+ struct lttng_event *ev, const char *channel_name)
{
int ret;
strncpy(lsm.u.enable.channel_name, channel_name, NAME_MAX);
}
- if (ev == NULL) {
- ret = ask_sessiond(LTTNG_KERNEL_ENABLE_ALL_EVENT, NULL);
- } else {
- memcpy(&lsm.u.enable.event, ev, sizeof(struct lttng_event));
- ret = ask_sessiond(LTTNG_KERNEL_ENABLE_EVENT, NULL);
- }
+ switch (domain->type) {
+ case LTTNG_DOMAIN_KERNEL:
+ if (ev == NULL) {
+ ret = ask_sessiond(LTTNG_KERNEL_ENABLE_ALL_EVENT, NULL);
+ } else {
+ memcpy(&lsm.u.enable.event, ev, sizeof(struct lttng_event));
+ ret = ask_sessiond(LTTNG_KERNEL_ENABLE_EVENT, NULL);
+ }
+ break;
+ case LTTNG_DOMAIN_UST:
+ ret = LTTCOMM_NOT_IMPLEMENTED;
+ break;
+ default:
+ ret = LTTCOMM_UNKNOWN_DOMAIN;
+ break;
+ };
return ret;
}
/*
- * lttng_kernel_disable_event
- *
- * Disable an event in the kernel tracer.
+ * Disable an event in the kernel tracer.
*/
-int lttng_kernel_disable_event(char *name, char *channel_name)
+int lttng_disable_event(struct lttng_domain *domain, const char *name,
+ const char *channel_name)
{
int ret;
strncpy(lsm.u.disable.channel_name, channel_name, NAME_MAX);
}
- if (name == NULL) {
- ret = ask_sessiond(LTTNG_KERNEL_DISABLE_ALL_EVENT, NULL);
- } else {
- strncpy(lsm.u.disable.name, name, NAME_MAX);
- ret = ask_sessiond(LTTNG_KERNEL_DISABLE_EVENT, NULL);
- }
+ switch (domain->type) {
+ case LTTNG_DOMAIN_KERNEL:
+ if (name == NULL) {
+ ret = ask_sessiond(LTTNG_KERNEL_DISABLE_ALL_EVENT, NULL);
+ } else {
+ strncpy(lsm.u.disable.name, name, NAME_MAX);
+ ret = ask_sessiond(LTTNG_KERNEL_DISABLE_EVENT, NULL);
+ }
+ break;
+ case LTTNG_DOMAIN_UST:
+ ret = LTTCOMM_NOT_IMPLEMENTED;
+ break;
+ default:
+ ret = LTTCOMM_UNKNOWN_DOMAIN;
+ break;
+ };
return ret;
}
/*
- * lttng_kernel_enable_channel
- *
- * Enable recording for a channel for the kernel tracer.
+ * Enable recording for a channel for the kernel tracer.
*/
-int lttng_kernel_enable_channel(char *name)
+int lttng_enable_channel(struct lttng_domain *domain,
+ struct lttng_channel *chan)
{
- strncpy(lsm.u.enable.channel_name, name, NAME_MAX);
- return ask_sessiond(LTTNG_KERNEL_ENABLE_CHANNEL, NULL);
-}
-
-/*
- * lttng_kernel_disable_channel
- *
- * Disable recording for the channel for the kernel tracer.
- */
-int lttng_kernel_disable_channel(char *name)
-{
- strncpy(lsm.u.disable.channel_name, name, NAME_MAX);
- return ask_sessiond(LTTNG_KERNEL_DISABLE_CHANNEL, NULL);
-}
+ int ret;
-/*
- * lttng_kernel_create_channel
- *
- * Create a channel in the kernel tracer.
- */
-int lttng_kernel_create_channel(struct lttng_channel *chan)
-{
memcpy(&lsm.u.channel.chan, chan, sizeof(struct lttng_channel));
- return ask_sessiond(LTTNG_KERNEL_CREATE_CHANNEL, NULL);
+
+ switch (domain->type) {
+ case LTTNG_DOMAIN_KERNEL:
+ ret = ask_sessiond(LTTNG_KERNEL_ENABLE_CHANNEL, NULL);
+ break;
+ case LTTNG_DOMAIN_UST:
+ ret = LTTCOMM_NOT_IMPLEMENTED;
+ break;
+ default:
+ ret = LTTCOMM_UNKNOWN_DOMAIN;
+ break;
+ };
+
+ return ret;
}
/*
- * lttng_list_events
- *
- * List all available events in the kernel.
- *
- * Return the size (bytes) of the list and set the event_list array.
- * On error, return negative value.
+ * Disable recording for the channel for the kernel tracer.
*/
-int lttng_kernel_list_events(char **event_list)
+int lttng_disable_channel(struct lttng_domain *domain, const char *name)
{
- return ask_sessiond(LTTNG_KERNEL_LIST_EVENTS, (void **) event_list);
-}
+ int ret;
-/*
- * END Kernel control API
- */
+ strncpy(lsm.u.disable.channel_name, name, NAME_MAX);
-/*
- * lttng_get_readable_code
- *
- * Return a human readable string of code
- */
-const char *lttng_get_readable_code(int code)
-{
- if (code > -LTTCOMM_OK) {
- return "Ended with errors";
- }
+ switch (domain->type) {
+ case LTTNG_DOMAIN_KERNEL:
+ ret = ask_sessiond(LTTNG_KERNEL_DISABLE_CHANNEL, NULL);
+ break;
+ case LTTNG_DOMAIN_UST:
+ ret = LTTCOMM_NOT_IMPLEMENTED;
+ break;
+ default:
+ ret = LTTCOMM_UNKNOWN_DOMAIN;
+ break;
+ };
- return lttcomm_get_readable_code(code);
+ return ret;
}
/*
- * lttng_ust_list_apps
- *
- * Ask the session daemon for all UST traceable applications.
+ * List all available events in the kernel.
*
- * Return the number of pids.
- * On error, return negative value.
+ * Return the size (bytes) of the list and set the event_list array.
+ * On error, return negative value.
*/
-int lttng_ust_list_traceable_apps(pid_t **pids)
+int lttng_list_events(struct lttng_domain *domain, char **event_list)
{
int ret;
- ret = ask_sessiond(LTTNG_LIST_TRACEABLE_APPS, (void**) pids);
- if (ret < 0) {
- return ret;
- }
+ switch (domain->type) {
+ case LTTNG_DOMAIN_KERNEL:
+ ret = ask_sessiond(LTTNG_KERNEL_LIST_EVENTS, (void **) event_list);
+ break;
+ case LTTNG_DOMAIN_UST:
+ ret = LTTCOMM_NOT_IMPLEMENTED;
+ break;
+ default:
+ ret = LTTCOMM_UNKNOWN_DOMAIN;
+ break;
+ };
- return ret / sizeof(pid_t);
+ return ret;
}
/*
- * lttng_list_traces
- *
- * Ask the session daemon for all traces (kernel and ust) for the session
- * identified by name.
- *
- * Return the number of traces.
- * On error, return negative value.
+ * Return a human readable string of code
*/
-/*
-int lttng_list_traces(char *session_name, struct lttng_trace **traces)
+const char *lttng_get_readable_code(int code)
{
- int ret;
-
- strncpy(lsm.session_name, session_name, NAME_MAX);
-
- ret = ask_sessiond(LTTNG_LIST_TRACES, (void **) traces);
- if (ret < 0) {
- return ret;
+ if (code > -LTTCOMM_OK) {
+ return "Ended with errors";
}
- return ret / sizeof(struct lttng_trace);
+ return lttcomm_get_readable_code(code);
}
-*/
/*
- * lttng_create_session
- *
* Create a brand new session using name.
*/
-int lttng_create_session(char *name, char *path)
+int lttng_create_session(const char *name, const char *path)
{
strncpy(lsm.session_name, name, NAME_MAX);
strncpy(lsm.path, path, PATH_MAX);
}
/*
- * lttng_destroy_session
- *
* Destroy session using name.
*/
-int lttng_destroy_session(char *name)
+int lttng_destroy_session(const char *name)
{
strncpy(lsm.session_name, name, NAME_MAX);
return ask_sessiond(LTTNG_DESTROY_SESSION, NULL);
}
/*
- * lttng_list_sessions
- *
* Ask the session daemon for all available sessions.
*
* Return number of session.
return ret / sizeof(struct lttng_session);
}
-void lttng_set_session_name(char *name)
+/*
+ * Set session name for the current lsm.
+ */
+void lttng_set_session_name(const char *name)
{
strncpy(lsm.session_name, name, NAME_MAX);
}
projects / lttng-tools.git / blobdiff