/*
* lttng-ust-abi.c
*
- * Copyright 2010-2011 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
* LTTng UST ABI
*
+ * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * 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
+ * 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
+ *
+ *
* Mimic system calls for:
* - session creation, returns an object descriptor or failure.
* - channel creation, returns an object descriptor or failure.
* - Takes an instrumentation source as parameter
* - e.g. tracepoints, dynamic_probes...
* - Takes instrumentation source specific arguments.
- *
- * Dual LGPL v2.1/GPL v2 license.
*/
#include <lttng/ust-abi.h>
#include <urcu/list.h>
#include <lttng/ust-events.h>
#include <lttng/ust-version.h>
+#include <lttng/tracepoint.h>
+#include "tracepoint-internal.h"
#include <usterr-signal-safe.h>
#include <helper.h>
#include "ltt-tracer.h"
-#include "tracepoint-internal.h"
static int lttng_ust_abi_close_in_progress;
static const struct lttng_ust_objd_ops lttng_channel_ops;
static const struct lttng_ust_objd_ops lttng_metadata_ops;
static const struct lttng_ust_objd_ops lttng_event_ops;
-static const struct lttng_ust_objd_ops lttng_loglevel_ops;
+static const struct lttng_ust_objd_ops lttng_wildcard_ops;
static const struct lttng_ust_objd_ops lib_ring_buffer_objd_ops;
static const struct lttng_ust_objd_ops lttng_tracepoint_list_ops;
* @objd: the object descriptor
* @cmd: the command
* @arg: command arg
+ * @uargs: UST arguments (internal)
*
* This descriptor implements lttng commands:
* LTTNG_UST_SESSION
* The returned session will be deleted when its file descriptor is closed.
*/
static
-long lttng_cmd(int objd, unsigned int cmd, unsigned long arg)
+long lttng_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
{
switch (cmd) {
case LTTNG_UST_SESSION:
static struct lttng_ust_event metadata_params = {
.instrumentation = LTTNG_UST_TRACEPOINT,
.name = "lttng_ust:metadata",
+ .loglevel_type = LTTNG_UST_LOGLEVEL_ALL,
+ .loglevel = TRACE_DEFAULT,
};
struct ltt_event *event;
int ret;
int lttng_abi_create_channel(int session_objd,
struct lttng_ust_channel *chan_param,
- enum channel_type channel_type)
+ enum channel_type channel_type,
+ union ust_args *uargs)
{
struct ltt_session *session = objd_private(session_objd);
const struct lttng_ust_objd_ops *ops;
chan_param->num_subbuf,
chan_param->switch_timer_interval,
chan_param->read_timer_interval,
- &chan_param->shm_fd,
- &chan_param->wait_fd,
- &chan_param->memory_map_size,
+ &uargs->channel.shm_fd,
+ &uargs->channel.shm_path,
+ &uargs->channel.wait_fd,
+ &uargs->channel.wait_pipe_path,
+ &uargs->channel.memory_map_size,
&chan_priv_init);
if (!chan) {
ret = -EINVAL;
* @obj: the object
* @cmd: the command
* @arg: command arg
+ * @uargs: UST arguments (internal)
*
* This descriptor implements lttng commands:
* LTTNG_UST_CHANNEL
* The returned channel will be deleted when its file descriptor is closed.
*/
static
-long lttng_session_cmd(int objd, unsigned int cmd, unsigned long arg)
+long lttng_session_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
{
struct ltt_session *session = objd_private(objd);
case LTTNG_UST_CHANNEL:
return lttng_abi_create_channel(objd,
(struct lttng_ust_channel *) arg,
- PER_CPU_CHANNEL);
+ PER_CPU_CHANNEL, uargs);
case LTTNG_UST_SESSION_START:
case LTTNG_UST_ENABLE:
return ltt_session_enable(session);
case LTTNG_UST_METADATA:
return lttng_abi_create_channel(objd,
(struct lttng_ust_channel *) arg,
- METADATA_CHANNEL);
+ METADATA_CHANNEL, uargs);
default:
return -EINVAL;
}
};
static
-long lttng_tracepoint_list_cmd(int objd, unsigned int cmd, unsigned long arg)
+long lttng_tracepoint_list_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
{
struct lttng_ust_tracepoint_list *list = objd_private(objd);
struct lttng_ust_tracepoint_iter *tp =
};
static
-int lttng_abi_open_stream(int channel_objd, struct lttng_ust_stream *info)
+int lttng_abi_open_stream(int channel_objd, struct lttng_ust_stream *info,
+ union ust_args *uargs)
{
struct ltt_channel *channel = objd_private(channel_objd);
struct lttng_ust_lib_ring_buffer *buf;
int stream_objd, ret;
buf = channel->ops->buffer_read_open(channel->chan, channel->handle,
- &info->shm_fd, &info->wait_fd, &info->memory_map_size);
+ &uargs->stream.shm_fd, &uargs->stream.shm_path,
+ &uargs->stream.wait_fd, &uargs->stream.wait_pipe_path,
+ &uargs->stream.memory_map_size);
if (!buf)
return -ENOENT;
}
static
-int lttng_abi_create_loglevel(int channel_objd,
+int lttng_abi_create_wildcard(int channel_objd,
struct lttng_ust_event *event_param)
{
struct ltt_channel *channel = objd_private(channel_objd);
- struct session_loglevel *loglevel;
- int loglevel_objd, ret;
+ struct session_wildcard *wildcard;
+ int wildcard_objd, ret;
event_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
- loglevel_objd = objd_alloc(NULL, <tng_loglevel_ops);
- if (loglevel_objd < 0) {
- ret = loglevel_objd;
+ wildcard_objd = objd_alloc(NULL, <tng_wildcard_ops);
+ if (wildcard_objd < 0) {
+ ret = wildcard_objd;
goto objd_error;
}
/*
- * We tolerate no failure path after loglevel creation. It will
+ * We tolerate no failure path after wildcard creation. It will
* stay invariant for the rest of the session.
*/
- ret = ltt_loglevel_create(channel, event_param, &loglevel);
+ ret = ltt_wildcard_create(channel, event_param, &wildcard);
if (ret < 0) {
- goto loglevel_error;
+ goto wildcard_error;
}
- objd_set_private(loglevel_objd, loglevel);
- /* The loglevel holds a reference on the channel */
+ objd_set_private(wildcard_objd, wildcard);
+ /* The wildcard holds a reference on the channel */
objd_ref(channel_objd);
- return loglevel_objd;
+ return wildcard_objd;
-loglevel_error:
+wildcard_error:
{
int err;
- err = lttng_ust_objd_unref(loglevel_objd);
+ err = lttng_ust_objd_unref(wildcard_objd);
assert(!err);
}
objd_error:
* @objd: the object descriptor
* @cmd: the command
* @arg: command arg
+ * @uargs: UST arguments (internal)
*
* This object descriptor implements lttng commands:
* LTTNG_UST_STREAM
* Channel and event file descriptors also hold a reference on the session.
*/
static
-long lttng_channel_cmd(int objd, unsigned int cmd, unsigned long arg)
+long lttng_channel_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
{
struct ltt_channel *channel = objd_private(objd);
stream = (struct lttng_ust_stream *) arg;
/* stream used as output */
- return lttng_abi_open_stream(objd, stream);
+ return lttng_abi_open_stream(objd, stream, uargs);
}
case LTTNG_UST_EVENT:
{
struct lttng_ust_event *event_param =
(struct lttng_ust_event *) arg;
- if (event_param->instrumentation == LTTNG_UST_TRACEPOINT_LOGLEVEL) {
- return lttng_abi_create_loglevel(objd, event_param);
+ if (event_param->name[strlen(event_param->name) - 1] == '*') {
+ /* If ends with wildcard, create wildcard. */
+ return lttng_abi_create_wildcard(objd, event_param);
} else {
return lttng_abi_create_event(objd, event_param);
}
* @objd: the object descriptor
* @cmd: the command
* @arg: command arg
+ * @uargs: UST arguments (internal)
*
* This object descriptor implements lttng commands:
* LTTNG_UST_STREAM
* Channel and event file descriptors also hold a reference on the session.
*/
static
-long lttng_metadata_cmd(int objd, unsigned int cmd, unsigned long arg)
+long lttng_metadata_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
{
struct ltt_channel *channel = objd_private(objd);
stream = (struct lttng_ust_stream *) arg;
/* stream used as output */
- return lttng_abi_open_stream(objd, stream);
+ return lttng_abi_open_stream(objd, stream, uargs);
}
case LTTNG_UST_FLUSH_BUFFER:
return channel->ops->flush_buffer(channel->chan, channel->handle);
* @objd: the object descriptor
* @cmd: the command
* @arg: command arg
+ * @uargs: UST arguments (internal)
*
* This object descriptor implements lttng commands:
* (None for now. Access is done directly though shm.)
*/
static
-long lttng_rb_cmd(int objd, unsigned int cmd, unsigned long arg)
+long lttng_rb_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
{
switch (cmd) {
default:
* @objd: the object descriptor
* @cmd: the command
* @arg: command arg
+ * @uargs: UST arguments (internal)
*
* This object descriptor implements lttng commands:
* LTTNG_UST_CONTEXT
* Disable recording for this event (strong disable)
*/
static
-long lttng_event_cmd(int objd, unsigned int cmd, unsigned long arg)
+long lttng_event_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
{
struct ltt_event *event = objd_private(objd);
};
/**
- * lttng_loglevel_cmd - lttng control through object descriptors
+ * lttng_wildcard_cmd - lttng control through object descriptors
*
* @objd: the object descriptor
* @cmd: the command
* @arg: command arg
+ * @uargs: UST arguments (internal)
*
* This object descriptor implements lttng commands:
* LTTNG_UST_CONTEXT
* Prepend a context field to each record of events of this
- * loglevel.
+ * wildcard.
* LTTNG_UST_ENABLE
- * Enable recording for these loglevel events (weak enable)
+ * Enable recording for these wildcard events (weak enable)
* LTTNG_UST_DISABLE
- * Disable recording for these loglevel events (strong disable)
+ * Disable recording for these wildcard events (strong disable)
*/
static
-long lttng_loglevel_cmd(int objd, unsigned int cmd, unsigned long arg)
+long lttng_wildcard_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
{
- struct session_loglevel *loglevel = objd_private(objd);
+ struct session_wildcard *wildcard = objd_private(objd);
switch (cmd) {
case LTTNG_UST_CONTEXT:
#if 0
return lttng_abi_add_context(objd,
(struct lttng_ust_context *) arg,
- &loglevel->ctx, loglevel->chan->session);
+ &wildcard->ctx, wildcard->chan->session);
#endif
case LTTNG_UST_ENABLE:
- return ltt_loglevel_enable(loglevel);
+ return ltt_wildcard_enable(wildcard);
case LTTNG_UST_DISABLE:
- return ltt_loglevel_disable(loglevel);
+ return ltt_wildcard_disable(wildcard);
default:
return -EINVAL;
}
}
static
-int lttng_loglevel_release(int objd)
+int lttng_wildcard_release(int objd)
{
- struct session_loglevel *loglevel = objd_private(objd);
+ struct session_wildcard *wildcard = objd_private(objd);
- if (loglevel)
- return lttng_ust_objd_unref(loglevel->chan->objd);
+ if (wildcard)
+ return lttng_ust_objd_unref(wildcard->chan->objd);
return 0;
}
/* TODO: filter control ioctl */
-static const struct lttng_ust_objd_ops lttng_loglevel_ops = {
- .release = lttng_loglevel_release,
- .cmd = lttng_loglevel_cmd,
+static const struct lttng_ust_objd_ops lttng_wildcard_ops = {
+ .release = lttng_wildcard_release,
+ .cmd = lttng_wildcard_cmd,
};
void lttng_ust_abi_exit(void)
projects / lttng-ust.git / blobdiff