*/
#define _GNU_SOURCE
+#include <byteswap.h>
+#include <stdint.h>
#include <string.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#include <lttng/ust-config.h>
#include <lttng/ust-ctl.h>
#include <lttng/ust-abi.h>
#include <lttng/ust-events.h>
-#include <sys/mman.h>
-#include <byteswap.h>
-
#include <usterr-signal-safe.h>
#include <ust-comm.h>
#include <helper.h>
#include "../liblttng-ust/wait.h"
#include "../liblttng-ust/lttng-rb-clients.h"
#include "../liblttng-ust/clock.h"
+#include "../liblttng-ust/getenv.h"
/*
* Number of milliseconds to retry before failing metadata writes on
extern void lttng_ring_buffer_client_discard_rt_exit(void);
extern void lttng_ring_buffer_metadata_client_exit(void);
-volatile enum ust_loglevel ust_loglevel;
-
int ustctl_release_handle(int sock, int handle)
{
struct ustcomm_ust_msg lum;
break;
case LTTNG_UST_OBJECT_TYPE_EVENT:
case LTTNG_UST_OBJECT_TYPE_CONTEXT:
+ case LTTNG_UST_OBJECT_TYPE_TRIGGER_GROUP:
+ case LTTNG_UST_OBJECT_TYPE_TRIGGER:
break;
default:
assert(0);
return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
}
+int ustctl_set_capture(int sock, struct lttng_ust_capture_bytecode *bytecode,
+ struct lttng_ust_object_data *obj_data)
+{
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ int ret;
+
+ if (!obj_data)
+ return -EINVAL;
+
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = obj_data->handle;
+ lum.cmd = LTTNG_UST_CAPTURE;
+ lum.u.capture.data_size = bytecode->len;
+ lum.u.capture.reloc_offset = bytecode->reloc_offset;
+ lum.u.capture.seqnum = bytecode->seqnum;
+
+ ret = ustcomm_send_app_msg(sock, &lum);
+ if (ret)
+ return ret;
+ /* send var len bytecode */
+ ret = ustcomm_send_unix_sock(sock, bytecode->data,
+ bytecode->len);
+ if (ret < 0) {
+ return ret;
+ }
+ if (ret != bytecode->len)
+ return -EINVAL;
+ return ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+}
+
int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion,
struct lttng_ust_object_data *obj_data)
{
return ustctl_disable(sock, &obj);
}
+int ustctl_create_trigger_group(int sock, int pipe_fd,
+ struct lttng_ust_object_data **_trigger_group_data)
+{
+ struct lttng_ust_object_data *trigger_group_data;
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ ssize_t len;
+ int ret;
+
+ if (!_trigger_group_data)
+ return -EINVAL;
+
+ trigger_group_data = zmalloc(sizeof(*trigger_group_data));
+ if (!trigger_group_data)
+ return -ENOMEM;
+
+ trigger_group_data->type = LTTNG_UST_OBJECT_TYPE_TRIGGER_GROUP;
+
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = LTTNG_UST_ROOT_HANDLE;
+ lum.cmd = LTTNG_UST_TRIGGER_GROUP_CREATE;
+
+ ret = ustcomm_send_app_msg(sock, &lum);
+ if (ret)
+ goto error;
+
+ /* Send trigger notification pipe. */
+ len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1);
+ if (len <= 0) {
+ ret = len;
+ goto error;
+ }
+
+ ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+ if (ret)
+ goto error;
+
+ trigger_group_data->handle = lur.ret_val;
+ DBG("received trigger group handle %d", trigger_group_data->handle);
+
+ *_trigger_group_data = trigger_group_data;
+
+ ret = 0;
+ goto end;
+error:
+ free(trigger_group_data);
+
+end:
+ return ret;
+}
+
+int ustctl_create_trigger(int sock, struct lttng_ust_trigger *trigger,
+ struct lttng_ust_object_data *trigger_group,
+ struct lttng_ust_object_data **_trigger_data)
+{
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ struct lttng_ust_object_data *trigger_data;
+ int ret;
+
+ if (!trigger_group || !_trigger_data)
+ return -EINVAL;
+
+ trigger_data = zmalloc(sizeof(*trigger_data));
+ if (!trigger_data)
+ return -ENOMEM;
+
+ trigger_data->type = LTTNG_UST_OBJECT_TYPE_TRIGGER;
+
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = trigger_group->handle;
+ lum.cmd = LTTNG_UST_TRIGGER_CREATE;
+
+ strncpy(lum.u.trigger.name, trigger->name,
+ LTTNG_UST_SYM_NAME_LEN);
+ lum.u.trigger.instrumentation = trigger->instrumentation;
+ lum.u.trigger.loglevel_type = trigger->loglevel_type;
+ lum.u.trigger.loglevel = trigger->loglevel;
+ lum.u.trigger.id = trigger->id;
+ ret = ustcomm_send_app_cmd(sock, &lum, &lur);
+ if (ret) {
+ free(trigger_data);
+ return ret;
+ }
+ trigger_data->handle = lur.ret_val;
+ DBG("received event handle %u", trigger_data->handle);
+ *_trigger_data = trigger_data;
+
+ return ret;
+}
+
int ustctl_tracepoint_list(int sock)
{
struct ustcomm_ust_msg lum;
attr->switch_timer_interval,
attr->read_timer_interval,
attr->uuid, attr->chan_id,
- stream_fds, nr_stream_fds);
+ stream_fds, nr_stream_fds,
+ attr->blocking_timeout);
if (!chan->chan) {
goto chan_error;
}
&buf->prod_snapshot, consumer_chan->chan->handle);
}
+/*
+ * Get a snapshot of the current ring buffer producer and consumer positions
+ * even if the consumed and produced positions are contained within the same
+ * subbuffer.
+ */
+int ustctl_snapshot_sample_positions(struct ustctl_consumer_stream *stream)
+{
+ struct lttng_ust_lib_ring_buffer *buf;
+ struct ustctl_consumer_channel *consumer_chan;
+
+ if (!stream)
+ return -EINVAL;
+ buf = stream->buf;
+ consumer_chan = stream->chan;
+ return lib_ring_buffer_snapshot_sample_positions(buf,
+ &buf->cons_snapshot, &buf->prod_snapshot,
+ consumer_chan->chan->handle);
+}
+
/* Get the consumer position (iteration start) */
int ustctl_snapshot_get_consumed(struct ustctl_consumer_stream *stream,
unsigned long *pos)
consumer_chan->chan->handle);
}
+void ustctl_clear_buffer(struct ustctl_consumer_stream *stream)
+{
+ struct lttng_ust_lib_ring_buffer *buf;
+ struct ustctl_consumer_channel *consumer_chan;
+
+ assert(stream);
+ buf = stream->buf;
+ consumer_chan = stream->chan;
+ lib_ring_buffer_switch_slow(buf, SWITCH_ACTIVE,
+ consumer_chan->chan->handle);
+ lib_ring_buffer_clear_reader(buf, consumer_chan->chan->handle);
+}
+
static
struct lttng_ust_client_lib_ring_buffer_client_cb *get_client_cb(
struct lttng_ust_lib_ring_buffer *buf,
return client_cb->instance_id(buf, handle, id);
}
-#if defined(__x86_64__) || defined(__i386__) || defined(__ARM_ARCH_7A__)
+#ifdef LTTNG_UST_HAVE_PERF_EVENT
int ustctl_has_perf_counters(void)
{
*uint64_t_alignment = reg_msg.uint64_t_alignment;
*long_alignment = reg_msg.long_alignment;
memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN);
- if (reg_msg.major != LTTNG_UST_ABI_MAJOR_VERSION) {
+ if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE ||
+ reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) {
return -LTTNG_UST_ERR_UNSUP_MAJOR;
}
return 0;
}
+/* Regenerate the statedump. */
+int ustctl_regenerate_statedump(int sock, int handle)
+{
+ struct ustcomm_ust_msg lum;
+ struct ustcomm_ust_reply lur;
+ int ret;
+
+ memset(&lum, 0, sizeof(lum));
+ lum.handle = handle;
+ lum.cmd = LTTNG_UST_SESSION_STATEDUMP;
+ ret = ustcomm_send_app_cmd(sock, &lum, &lur);
+ if (ret)
+ return ret;
+ DBG("Regenerated statedump for handle %u", handle);
+ return 0;
+}
+
static __attribute__((constructor))
void ustctl_init(void)
{
init_usterr();
+ lttng_ust_getenv_init(); /* Needs init_usterr() to be completed. */
lttng_ust_clock_init();
lttng_ring_buffer_metadata_client_init();
lttng_ring_buffer_client_overwrite_init();
projects / deliverable / lttng-ust.git / blobdiff