*/
#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <errno.h>
#include <urcu/list.h>
#include <string.h>
#include "channel.h"
#include "event.h"
#include "kernel.h"
+#include "lttng-sessiond.h"
#include "ust-ctl.h"
#include "ust-app.h"
#include "trace-kernel.h"
key.name = event->attr.name;
key.filter = (struct lttng_filter_bytecode *) event->filter;
key.loglevel = event->attr.loglevel;
+ key.exclusion = event->exclusion;
node_ptr = cds_lfht_add_unique(ht->ht,
ht->hash_fct(event->node.key, lttng_ht_seed),
assert(node_ptr == &event->node.node);
}
-/*
- * Setup a lttng_event used to enable *all* syscall tracing.
- */
-static void init_syscalls_kernel_event(struct lttng_event *event)
-{
- assert(event);
-
- event->name[0] = '\0';
- /*
- * We use LTTNG_EVENT* here since the trace kernel creation will make the
- * right changes for the kernel.
- */
- event->type = LTTNG_EVENT_SYSCALL;
-}
-
/*
* Disable kernel tracepoint event for a channel from the kernel session.
*/
return ret;
}
+/*
+ * Enable kernel system call for a channel from the kernel session.
+ */
+int event_kernel_enable_syscall(struct ltt_kernel_channel *kchan,
+ char *syscall_name)
+{
+ int ret;
+
+ assert(kchan);
+
+ ret = kernel_enable_syscall(syscall_name, kchan);
+ if (ret < 0) {
+ ret = LTTNG_ERR_KERN_ENABLE_FAIL;
+ goto error;
+ }
+
+ DBG("Kernel event %s enable for channel %s.",
+ syscall_name, kchan->channel->name);
+
+ ret = LTTNG_OK;
+
+error:
+ return ret;
+}
+
+/*
+ * Disable kernel system call for a channel from the kernel session.
+ */
+int event_kernel_disable_syscall(struct ltt_kernel_channel *kchan,
+ char *syscall_name)
+{
+ int ret;
+
+ assert(kchan);
+
+ ret = kernel_disable_syscall(syscall_name, kchan);
+ if (ret < 0) {
+ ret = LTTNG_ERR_KERN_DISABLE_FAIL;
+ goto error;
+ }
+
+ DBG("Kernel syscall %s disable for channel %s.",
+ syscall_name[0] == '\0' ? "<all>" : syscall_name,
+ kchan->channel->name);
+
+ ret = LTTNG_OK;
+
+error:
+ return ret;
+}
+
/*
* Disable kernel tracepoint events for a channel from the kernel session.
*/
return ret;
}
-/*
- * Disable kernel syscall events for a channel from the kernel session.
- */
-int event_kernel_disable_all_syscalls(struct ltt_kernel_channel *kchan)
-{
- ERR("Cannot disable syscall tracing for existing session. Please destroy session instead.");
- return LTTNG_OK; /* Return OK so disable all succeeds */
-}
-
/*
* Disable all kernel event for a channel from the kernel session.
*/
ret = event_kernel_disable_all_tracepoints(kchan);
if (ret != LTTNG_OK)
return ret;
- ret = event_kernel_disable_all_syscalls(kchan);
+ ret = event_kernel_disable_syscall(kchan, "");
return ret;
}
return ret;
}
-/*
- * Enable all kernel tracepoint events of a channel of the kernel session.
- */
-int event_kernel_enable_all_syscalls(struct ltt_kernel_channel *kchan,
- int kernel_tracer_fd)
-{
- int ret;
- struct lttng_event event;
-
- assert(kchan);
-
- init_syscalls_kernel_event(&event);
-
- DBG("Enabling all syscall tracing");
-
- ret = kernel_create_event(&event, kchan);
- if (ret < 0) {
- if (ret == -EEXIST) {
- ret = LTTNG_ERR_KERN_EVENT_EXIST;
- } else {
- ret = LTTNG_ERR_KERN_ENABLE_FAIL;
- }
- goto end;
- }
-
- ret = LTTNG_OK;
-end:
- return ret;
-}
-
/*
* Enable all kernel events of a channel of the kernel session.
*/
* tracepoints did not fail. Future work will allow us to send back
* multiple errors to the client in one API call.
*/
- (void) event_kernel_enable_all_syscalls(kchan, kernel_tracer_fd);
+ (void) event_kernel_enable_syscall(kchan, "");
end:
return tp_ret;
* Enable all UST tracepoints for a channel from a UST session.
*/
int event_ust_enable_all_tracepoints(struct ltt_ust_session *usess,
- struct ltt_ust_channel *uchan, struct lttng_filter_bytecode *filter)
+ struct ltt_ust_channel *uchan,
+ char *filter_expression,
+ struct lttng_filter_bytecode *filter)
{
int ret, i, size;
struct lttng_ht_iter iter;
* previously.
*/
uevent = trace_ust_find_event(uchan->events, events[i].name, filter,
- events[i].loglevel);
+ events[i].loglevel, NULL);
if (uevent != NULL) {
ret = ust_app_enable_event_pid(usess, uchan, uevent,
events[i].pid);
}
/* Create ust event */
- uevent = trace_ust_create_event(&events[i], filter);
+ uevent = trace_ust_create_event(&events[i], filter_expression,
+ filter, NULL);
if (uevent == NULL) {
ret = LTTNG_ERR_FATAL;
goto error_destroy;
*/
int event_ust_enable_tracepoint(struct ltt_ust_session *usess,
struct ltt_ust_channel *uchan, struct lttng_event *event,
- struct lttng_filter_bytecode *filter)
+ char *filter_expression,
+ struct lttng_filter_bytecode *filter,
+ struct lttng_event_exclusion *exclusion)
{
int ret = LTTNG_OK, to_create = 0;
struct ltt_ust_event *uevent;
rcu_read_lock();
uevent = trace_ust_find_event(uchan->events, event->name, filter,
- event->loglevel);
+ event->loglevel, exclusion);
if (uevent == NULL) {
- uevent = trace_ust_create_event(event, filter);
+ uevent = trace_ust_create_event(event, filter_expression,
+ filter, exclusion);
if (uevent == NULL) {
ret = LTTNG_ERR_UST_ENABLE_FAIL;
goto error;
}
/*
- * Enable all JUL event for a given UST session.
+ * Enable all agent event for a given UST session.
*
* Return LTTNG_OK on success or else a LTTNG_ERR* code.
*/
-int event_jul_enable_all(struct ltt_ust_session *usess)
+int event_agent_enable_all(struct ltt_ust_session *usess,
+ struct agent *agt, struct lttng_event *event,
+ struct lttng_filter_bytecode *filter)
{
int ret;
- struct jul_event *jevent;
- struct lttng_event event;
+ struct agent_event *aevent;
struct lttng_ht_iter iter;
assert(usess);
- DBG("Event JUL enabling ALL events for session %" PRIu64, usess->id);
+ DBG("Event agent enabling ALL events for session %" PRIu64, usess->id);
- /* Create the * wildcard event name for the Java agent. */
- memset(event.name, 0, sizeof(event.name));
- strncpy(event.name, "*", sizeof(event.name));
- event.name[sizeof(event.name) - 1] = '\0';
-
- /* Enable event on JUL application through TCP socket. */
- ret = event_jul_enable(usess, &event);
+ /* Enable event on agent application through TCP socket. */
+ ret = event_agent_enable(usess, agt, event, filter);
if (ret != LTTNG_OK) {
goto error;
}
/* Flag every event that they are now enabled. */
rcu_read_lock();
- cds_lfht_for_each_entry(usess->domain_jul.events->ht, &iter.iter, jevent,
+ cds_lfht_for_each_entry(agt->events->ht, &iter.iter, aevent,
node.node) {
- jevent->enabled = 1;
+ aevent->enabled = 1;
}
rcu_read_unlock();
}
/*
- * Enable a single JUL event for a given UST session.
+ * Enable a single agent event for a given UST session.
*
* Return LTTNG_OK on success or else a LTTNG_ERR* code.
*/
-int event_jul_enable(struct ltt_ust_session *usess, struct lttng_event *event)
+int event_agent_enable(struct ltt_ust_session *usess,
+ struct agent *agt, struct lttng_event *event,
+ struct lttng_filter_bytecode *filter)
{
int ret, created = 0;
- struct jul_event *jevent;
+ struct agent_event *aevent;
assert(usess);
assert(event);
+ assert(agt);
- DBG("Event JUL enabling %s for session %" PRIu64, event->name, usess->id);
+ DBG("Event agent enabling %s for session %" PRIu64 " with loglevel type %d "
+ "and loglevel %d", event->name, usess->id, event->loglevel_type,
+ event->loglevel);
- jevent = jul_find_by_name(event->name, &usess->domain_jul);
- if (!jevent) {
- jevent = jul_create_event(event->name);
- if (!jevent) {
+ aevent = agent_find_event(event->name, event->loglevel, agt);
+ if (!aevent) {
+ aevent = agent_create_event(event->name, filter);
+ if (!aevent) {
ret = LTTNG_ERR_NOMEM;
goto error;
}
+ aevent->loglevel = event->loglevel;
+ aevent->loglevel_type = event->loglevel_type;
created = 1;
}
/* Already enabled? */
- if (jevent->enabled) {
+ if (aevent->enabled) {
goto end;
}
- ret = jul_enable_event(jevent);
+ ret = agent_enable_event(aevent, agt->domain);
if (ret != LTTNG_OK) {
goto error;
}
/* If the event was created prior to the enable, add it to the domain. */
if (created) {
- jul_add_event(jevent, &usess->domain_jul);
+ agent_add_event(aevent, agt);
}
end:
error:
if (created) {
- jul_destroy_event(jevent);
+ agent_destroy_event(aevent);
}
return ret;
}
/*
- * Disable a single JUL event for a given UST session.
+ * Return the agent default event name to use by testing if the process is root
+ * or not. Return NULL on error.
+ */
+const char *event_get_default_agent_ust_name(enum lttng_domain_type domain)
+{
+ const char *default_event_name = NULL;
+
+ switch (domain) {
+ case LTTNG_DOMAIN_LOG4J:
+ if (is_root) {
+ default_event_name = DEFAULT_SYS_LOG4J_EVENT_NAME;
+ } else {
+ default_event_name = DEFAULT_USER_LOG4J_EVENT_NAME;
+ }
+ break;
+ case LTTNG_DOMAIN_JUL:
+ if (is_root) {
+ default_event_name = DEFAULT_SYS_JUL_EVENT_NAME;
+ } else {
+ default_event_name = DEFAULT_USER_JUL_EVENT_NAME;
+ }
+ break;
+ case LTTNG_DOMAIN_PYTHON:
+ default_event_name = DEFAULT_USER_PYTHON_EVENT_NAME;
+ break;
+ default:
+ assert(0);
+ }
+
+ return default_event_name;
+}
+
+/*
+ * Disable a single agent event for a given UST session.
*
* Return LTTNG_OK on success or else a LTTNG_ERR* code.
*/
-int event_jul_disable(struct ltt_ust_session *usess, char *event_name)
+int event_agent_disable(struct ltt_ust_session *usess, struct agent *agt,
+ char *event_name)
{
int ret;
- struct jul_event *jevent;
+ struct agent_event *aevent;
+ struct ltt_ust_event *uevent = NULL;
+ struct ltt_ust_channel *uchan = NULL;
+ const char *ust_event_name, *ust_channel_name;
+ assert(agt);
assert(usess);
assert(event_name);
- DBG("Event JUL disabling %s for session %" PRIu64, event_name, usess->id);
+ DBG("Event agent disabling %s for session %" PRIu64, event_name, usess->id);
- jevent = jul_find_by_name(event_name, &usess->domain_jul);
- if (!jevent) {
+ aevent = agent_find_event_by_name(event_name, agt);
+ if (!aevent) {
ret = LTTNG_ERR_UST_EVENT_NOT_FOUND;
goto error;
}
/* Already disabled? */
- if (!jevent->enabled) {
+ if (!aevent->enabled) {
goto end;
}
- ret = jul_disable_event(jevent);
+ if (agt->domain == LTTNG_DOMAIN_JUL) {
+ ust_channel_name = DEFAULT_JUL_CHANNEL_NAME;
+ } else if (agt->domain == LTTNG_DOMAIN_LOG4J) {
+ ust_channel_name = DEFAULT_LOG4J_CHANNEL_NAME;
+ } else if (agt->domain == LTTNG_DOMAIN_PYTHON) {
+ ust_channel_name = DEFAULT_PYTHON_CHANNEL_NAME;
+ } else {
+ ret = LTTNG_ERR_INVALID;
+ goto error;
+ }
+
+ /*
+ * Disable it on the UST side. First get the channel reference then find
+ * the event and finally disable it.
+ */
+ uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
+ (char *) ust_channel_name);
+ if (!uchan) {
+ ret = LTTNG_ERR_UST_CHAN_NOT_FOUND;
+ goto error;
+ }
+
+ ust_event_name = event_get_default_agent_ust_name(agt->domain);
+ if (!ust_event_name) {
+ ret = LTTNG_ERR_FATAL;
+ goto error;
+ }
+
+ /*
+ * The loglevel is hardcoded with 0 here since the agent ust event is set
+ * with the loglevel type to ALL thus the loglevel stays 0. The event's
+ * filter is the one handling the loglevel for agent.
+ */
+ uevent = trace_ust_find_event(uchan->events, (char *) ust_event_name,
+ aevent->filter, 0, NULL);
+ /* If the agent event exists, it must be available on the UST side. */
+ assert(uevent);
+
+ ret = ust_app_disable_event_glb(usess, uchan, uevent);
+ if (ret < 0 && ret != -LTTNG_UST_ERR_EXIST) {
+ ret = LTTNG_ERR_UST_DISABLE_FAIL;
+ goto error;
+ }
+
+ /*
+ * Flag event that it's disabled so the shadow copy on the ust app side
+ * will disable it if an application shows up.
+ */
+ uevent->enabled = 0;
+
+ ret = agent_disable_event(aevent, agt->domain);
if (ret != LTTNG_OK) {
goto error;
}
return ret;
}
/*
- * Disable all JUL event for a given UST session.
+ * Disable all agent event for a given UST session.
*
* Return LTTNG_OK on success or else a LTTNG_ERR* code.
*/
-int event_jul_disable_all(struct ltt_ust_session *usess)
+int event_agent_disable_all(struct ltt_ust_session *usess,
+ struct agent *agt)
{
- int ret, do_disable = 0;
- struct jul_event *jevent;
+ int ret;
+ struct agent_event *aevent;
struct lttng_ht_iter iter;
+ assert(agt);
assert(usess);
- /* Enable event on JUL application through TCP socket. */
- ret = event_jul_disable(usess, "*");
- if (ret != LTTNG_OK) {
- if (ret == LTTNG_ERR_UST_EVENT_NOT_FOUND) {
- /*
- * This means that no enable all was done before but still a user
- * could want to disable everything even though the * wild card
- * event does not exists.
- */
- do_disable = 1;
- } else {
- goto error;
- }
+ /*
+ * Disable event on agent application. Continue to disable all other events
+ * if the * event is not found.
+ */
+ ret = event_agent_disable(usess, agt, "*");
+ if (ret != LTTNG_OK && ret != LTTNG_ERR_UST_EVENT_NOT_FOUND) {
+ goto error;
}
/* Flag every event that they are now enabled. */
rcu_read_lock();
- cds_lfht_for_each_entry(usess->domain_jul.events->ht, &iter.iter, jevent,
+ cds_lfht_for_each_entry(agt->events->ht, &iter.iter, aevent,
node.node) {
- if (jevent->enabled && do_disable) {
- ret = event_jul_disable(usess, jevent->name);
- if (ret != LTTNG_OK) {
- rcu_read_unlock();
- goto error;
- }
+ if (!aevent->enabled) {
+ continue;
+ }
+
+ ret = event_agent_disable(usess, agt, aevent->name);
+ if (ret != LTTNG_OK) {
+ rcu_read_unlock();
+ goto error;
}
- jevent->enabled = 0;
}
rcu_read_unlock();
projects / lttng-tools.git / blobdiff