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:
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.wait_fd,
+ &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.wait_fd,
+ &uargs->stream.memory_map_size);
if (!buf)
return -ENOENT;
return ret;
}
+static
+int lttng_abi_create_wildcard(int channel_objd,
+ struct lttng_ust_event *event_param)
+{
+ struct ltt_channel *channel = objd_private(channel_objd);
+ struct session_wildcard *wildcard;
+ int wildcard_objd, ret;
+
+ event_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
+ wildcard_objd = objd_alloc(NULL, <tng_wildcard_ops);
+ if (wildcard_objd < 0) {
+ ret = wildcard_objd;
+ goto objd_error;
+ }
+ /*
+ * We tolerate no failure path after wildcard creation. It will
+ * stay invariant for the rest of the session.
+ */
+ ret = ltt_wildcard_create(channel, event_param, &wildcard);
+ if (ret < 0) {
+ goto wildcard_error;
+ }
+ objd_set_private(wildcard_objd, wildcard);
+ /* The wildcard holds a reference on the channel */
+ objd_ref(channel_objd);
+ return wildcard_objd;
+
+wildcard_error:
+ {
+ int err;
+
+ err = lttng_ust_objd_unref(wildcard_objd);
+ assert(!err);
+ }
+objd_error:
+ return ret;
+}
+
/**
* lttng_channel_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_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:
{
if (event_param->instrumentation == LTTNG_UST_TRACEPOINT_LOGLEVEL) {
return lttng_abi_create_loglevel(objd, event_param);
} else {
- return lttng_abi_create_event(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);
+ }
}
}
case LTTNG_UST_CONTEXT:
* @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);
* @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 these loglevel events (strong disable)
*/
static
-long lttng_loglevel_cmd(int objd, unsigned int cmd, unsigned long arg)
+long lttng_loglevel_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
{
struct session_loglevel *loglevel = objd_private(objd);
.cmd = lttng_loglevel_cmd,
};
+/**
+ * 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
+ * wildcard.
+ * LTTNG_UST_ENABLE
+ * Enable recording for these wildcard events (weak enable)
+ * LTTNG_UST_DISABLE
+ * Disable recording for these wildcard events (strong disable)
+ */
+static
+long lttng_wildcard_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs)
+{
+ struct session_wildcard *wildcard = objd_private(objd);
+
+ switch (cmd) {
+ case LTTNG_UST_CONTEXT:
+ return -ENOSYS; /* not implemented yet */
+#if 0
+ return lttng_abi_add_context(objd,
+ (struct lttng_ust_context *) arg,
+ &wildcard->ctx, wildcard->chan->session);
+#endif
+ case LTTNG_UST_ENABLE:
+ return ltt_wildcard_enable(wildcard);
+ case LTTNG_UST_DISABLE:
+ return ltt_wildcard_disable(wildcard);
+ default:
+ return -EINVAL;
+ }
+}
+
+static
+int lttng_wildcard_release(int objd)
+{
+ struct session_wildcard *wildcard = objd_private(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_wildcard_ops = {
+ .release = lttng_wildcard_release,
+ .cmd = lttng_wildcard_cmd,
+};
+
void lttng_ust_abi_exit(void)
{
lttng_ust_abi_close_in_progress = 1;
projects / lttng-ust.git / blobdiff