+++ /dev/null
-/*
- * 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 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.
- */
-
-#include <errno.h>
-#include <urcu/list.h>
-#include <string.h>
-
-#include <lttng/lttng.h>
-#include <lttng-sessiond-comm.h>
-#include <lttngerr.h>
-
-#ifdef CONFIG_LTTNG_TOOLS_HAVE_UST
-#include <ust/lttng-ust-ctl.h>
-#else
-#include "lttng-ust-ctl.h"
-#endif
-
-#include "channel.h"
-#include "event.h"
-#include "hashtable.h"
-#include "kernel-ctl.h"
-
-/*
- * Setup a lttng_event used to enable *all* syscall tracing.
- */
-static void init_syscalls_kernel_event(struct lttng_event *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.
- */
-int event_kernel_disable_tracepoint(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, char *event_name)
-{
- int ret;
- struct ltt_kernel_event *kevent;
-
- kevent = trace_kernel_get_event_by_name(event_name, kchan);
- if (kevent == NULL) {
- ret = LTTCOMM_NO_EVENT;
- goto error;
- }
-
- ret = kernel_disable_event(kevent);
- if (ret < 0) {
- ret = LTTCOMM_KERN_DISABLE_FAIL;
- goto error;
- }
-
- DBG("Kernel event %s disable for channel %s.",
- kevent->event->name, kchan->channel->name);
-
- ret = LTTCOMM_OK;
-
-error:
- return ret;
-}
-
-/*
- * Disable kernel tracepoint events for a channel from the kernel session.
- */
-int event_kernel_disable_all_tracepoints(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan)
-{
- int ret;
- struct ltt_kernel_event *kevent;
-
- /* For each event in the kernel session */
- cds_list_for_each_entry(kevent, &kchan->events_list.head, list) {
- ret = kernel_disable_event(kevent);
- if (ret < 0) {
- /* We continue disabling the rest */
- continue;
- }
- }
- ret = LTTCOMM_OK;
- return ret;
-}
-
-/*
- * Disable kernel syscall events for a channel from the kernel session.
- */
-int event_kernel_disable_all_syscalls(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan)
-{
- ERR("Cannot disable syscall tracing for existing session. Please destroy session instead.");
- return LTTCOMM_OK; /* Return OK so disable all succeeds */
-}
-
-/*
- * Disable all kernel event for a channel from the kernel session.
- */
-int event_kernel_disable_all(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan)
-{
- int ret;
-
- ret = event_kernel_disable_all_tracepoints(ksession, kchan);
- if (ret != LTTCOMM_OK)
- return ret;
- ret = event_kernel_disable_all_syscalls(ksession, kchan);
- return ret;
-}
-
-/*
- * Enable kernel tracepoint event for a channel from the kernel session.
- */
-int event_kernel_enable_tracepoint(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, struct lttng_event *event)
-{
- int ret;
- struct ltt_kernel_event *kevent;
-
- kevent = trace_kernel_get_event_by_name(event->name, kchan);
- if (kevent == NULL) {
- ret = kernel_create_event(event, kchan);
- if (ret < 0) {
- if (ret == -EEXIST) {
- ret = LTTCOMM_KERN_EVENT_EXIST;
- } else {
- ret = LTTCOMM_KERN_ENABLE_FAIL;
- }
- goto end;
- }
- } else if (kevent->enabled == 0) {
- ret = kernel_enable_event(kevent);
- if (ret < 0) {
- ret = LTTCOMM_KERN_ENABLE_FAIL;
- goto end;
- }
- }
- ret = LTTCOMM_OK;
-end:
- return ret;
-}
-
-/*
- * Enable all kernel tracepoint events of a channel of the kernel session.
- */
-int event_kernel_enable_all_tracepoints(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, int kernel_tracer_fd)
-{
- int size, i, ret;
- struct ltt_kernel_event *kevent;
- struct lttng_event *event_list;
-
- /* For each event in the kernel session */
- cds_list_for_each_entry(kevent, &kchan->events_list.head, list) {
- ret = kernel_enable_event(kevent);
- if (ret < 0) {
- /* Enable failed but still continue */
- continue;
- }
- }
-
- size = kernel_list_events(kernel_tracer_fd, &event_list);
- if (size < 0) {
- ret = LTTCOMM_KERN_LIST_FAIL;
- goto end;
- }
-
- for (i = 0; i < size; i++) {
- kevent = trace_kernel_get_event_by_name(event_list[i].name, kchan);
- if (kevent == NULL) {
- /* Default event type for enable all */
- event_list[i].type = LTTNG_EVENT_TRACEPOINT;
- /* Enable each single tracepoint event */
- ret = kernel_create_event(&event_list[i], kchan);
- if (ret < 0) {
- /* Ignore error here and continue */
- }
- }
- }
- free(event_list);
- ret = LTTCOMM_OK;
-end:
- return ret;
-
-}
-
-/*
- * Enable all kernel tracepoint events of a channel of the kernel session.
- */
-int event_kernel_enable_all_syscalls(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, int kernel_tracer_fd)
-{
- int ret;
- struct lttng_event event;
-
- init_syscalls_kernel_event(&event);
-
- DBG("Enabling all syscall tracing");
-
- ret = kernel_create_event(&event, kchan);
- if (ret < 0) {
- goto end;
- }
- ret = LTTCOMM_OK;
-end:
- return ret;
-}
-
-/*
- * Enable all kernel events of a channel of the kernel session.
- */
-int event_kernel_enable_all(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, int kernel_tracer_fd)
-{
- int ret;
-
- ret = event_kernel_enable_all_tracepoints(ksession, kchan, kernel_tracer_fd);
- if (ret != LTTCOMM_OK) {
- goto end;
- }
- ret = event_kernel_enable_all_syscalls(ksession, kchan, kernel_tracer_fd);
-end:
- return ret;
-}
-
-/*
- * Enable UST tracepoint event for a channel from a UST session.
- */
-#ifdef DISABLE
-int event_ust_enable_tracepoint(struct ltt_ust_session *usess,
- struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
-{
- int ret;
- struct lttng_ust_event ltt_uevent;
- struct object_data *obj_event;
-
- strncpy(ltt_uevent.name, uevent->attr.name, sizeof(ltt_uevent.name));
- ltt_uevent.name[sizeof(ltt_uevent.name) - 1] = '\0';
- /* TODO: adjust to other instrumentation types */
- ltt_uevent.instrumentation = LTTNG_UST_TRACEPOINT;
-
- ret = ustctl_create_event(app->key.sock, <t_uevent,
- uchan->obj, &obj_event);
- if (ret < 0) {
- DBG("Error ustctl create event %s for app pid: %d, sock: %d ret %d",
- uevent->attr.name, app->key.pid, app->key.sock, ret);
- goto next;
- }
-
- uevent->obj = obj_event;
- uevent->handle = obj_event->handle;
- uevent->enabled = 1;
- ret = LTTCOMM_OK;
-end:
- return ret;
-}
-#endif
-
-#ifdef DISABLE
-int event_ust_disable_tracepoint(struct ltt_ust_session *ustsession,
- struct ltt_ust_channel *ustchan, char *event_name)
-{
- int ret;
- struct ltt_ust_event *ustevent;
-
- ustevent = trace_ust_find_event_by_name(ustchan->events, event_name);
- if (ustevent == NULL) {
- ret = LTTCOMM_NO_EVENT;
- goto end;
- }
- //ret = ustctl_disable(ustsession->sock, ustevent->obj);
- if (ret < 0) {
- ret = LTTCOMM_UST_ENABLE_FAIL;
- goto end;
- }
- ustevent->enabled = 0;
- ret = LTTCOMM_OK;
-end:
- return ret;
-}
-#endif
projects / lttng-tools.git / blobdiff