* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2 only,
* as published by the Free Software Foundation.
- *
+ *
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#ifndef _LTTNG_SESSIOND_COMM_H
#define _LTTNG_SESSIOND_COMM_H
-#define _GNU_SOURCE
#include <limits.h>
#include <lttng/lttng.h>
#include <lttng/snapshot-internal.h>
#include <lttng/save-internal.h>
+#include <lttng/channel-internal.h>
+#include <lttng/trigger/trigger-internal.h>
#include <common/compat/socket.h>
#include <common/uri.h>
#include <common/defaults.h>
#include "inet.h"
#include "inet6.h"
-#include "unix.h"
+#include <common/unix.h>
/* Queue size of listen(2) */
#define LTTNG_SESSIOND_COMM_MAX_LISTEN 64
enum lttcomm_sessiond_command {
/* Tracer command */
LTTNG_ADD_CONTEXT = 0,
- LTTNG_CALIBRATE = 1,
+ /* LTTNG_CALIBRATE used to be here */
LTTNG_DISABLE_CHANNEL = 2,
LTTNG_DISABLE_EVENT = 3,
- LTTNG_DISABLE_ALL_EVENT = 4,
+ LTTNG_LIST_SYSCALLS = 4,
LTTNG_ENABLE_CHANNEL = 5,
LTTNG_ENABLE_EVENT = 6,
- LTTNG_ENABLE_ALL_EVENT = 7,
+ /* 7 */
/* Session daemon command */
LTTNG_CREATE_SESSION = 8,
LTTNG_DESTROY_SESSION = 9,
LTTNG_CREATE_SESSION_SNAPSHOT = 29,
LTTNG_CREATE_SESSION_LIVE = 30,
LTTNG_SAVE_SESSION = 31,
+ LTTNG_TRACK_PID = 32,
+ LTTNG_UNTRACK_PID = 33,
+ LTTNG_LIST_TRACKER_PIDS = 34,
+ LTTNG_SET_SESSION_SHM_PATH = 40,
+ LTTNG_REGENERATE_METADATA = 41,
+ LTTNG_REGENERATE_STATEDUMP = 42,
+ LTTNG_REGISTER_TRIGGER = 43,
+ LTTNG_UNREGISTER_TRIGGER = 44,
+ LTTNG_ROTATE_SESSION = 45,
};
enum lttcomm_relayd_command {
RELAYD_LIST_SESSIONS = 15,
/* All streams of the channel have been sent to the relayd (2.4+). */
RELAYD_STREAMS_SENT = 16,
+ /* Ask the relay to reset the metadata trace file (2.8+) */
+ RELAYD_RESET_METADATA = 17,
+ /* Ask the relay to rotate a stream file (2.11+) */
+ RELAYD_ROTATE_STREAM = 18,
+ /* Rename a chunk after the rotation is completed (2.11+) */
+ RELAYD_ROTATE_RENAME = 19,
+ /* Check if a chunk has data pending (2.11+) */
+ RELAYD_ROTATE_PENDING = 20,
+ /* Create a folder on the relayd FS (2.11+) */
+ RELAYD_MKDIR = 21,
};
/*
LTTCOMM_CONSUMERD_FATAL, /* Fatal error. */
LTTCOMM_CONSUMERD_RELAYD_FAIL, /* Error on remote relayd */
LTTCOMM_CONSUMERD_CHANNEL_FAIL, /* Channel creation failed. */
+ LTTCOMM_CONSUMERD_CHAN_NOT_FOUND, /* Channel not found. */
+ LTTCOMM_CONSUMERD_ALREADY_SET, /* Resource already set. */
/* MUST be last element */
LTTCOMM_NR, /* Last element */
int (*listen) (struct lttcomm_sock *sock, int backlog);
ssize_t (*recvmsg) (struct lttcomm_sock *sock, void *buf, size_t len,
int flags);
- ssize_t (*sendmsg) (struct lttcomm_sock *sock, void *buf, size_t len,
- int flags);
+ ssize_t (*sendmsg) (struct lttcomm_sock *sock, const void *buf,
+ size_t len, int flags);
};
/*
struct lttng_session session;
struct lttng_domain domain;
union {
- struct {
- char channel_name[LTTNG_SYMBOL_NAME_LEN];
- char name[NAME_MAX];
- } LTTNG_PACKED disable;
/* Event data */
struct {
char channel_name[LTTNG_SYMBOL_NAME_LEN];
* - unsigned char filter_bytecode[bytecode_len]
*/
} LTTNG_PACKED enable;
+ struct {
+ char channel_name[LTTNG_SYMBOL_NAME_LEN];
+ struct lttng_event event LTTNG_PACKED;
+ /* Length of following filter expression. */
+ uint32_t expression_len;
+ /* Length of following bytecode for filter. */
+ uint32_t bytecode_len;
+ /*
+ * After this structure, the following variable-length
+ * items are transmitted:
+ * - unsigned char filter_expression[expression_len]
+ * - unsigned char filter_bytecode[bytecode_len]
+ */
+ } LTTNG_PACKED disable;
/* Create channel */
struct {
struct lttng_channel chan LTTNG_PACKED;
+ /* struct lttng_channel_extended is already packed. */
+ struct lttng_channel_extended extended;
} LTTNG_PACKED channel;
/* Context */
struct {
char channel_name[LTTNG_SYMBOL_NAME_LEN];
struct lttng_event_context ctx LTTNG_PACKED;
+ uint32_t provider_name_len;
+ uint32_t context_name_len;
} LTTNG_PACKED context;
/* Use by register_consumer */
struct {
struct {
struct lttng_save_session_attr attr; /* struct already packed */
} LTTNG_PACKED save_session;
+ struct {
+ char shm_path[PATH_MAX];
+ } LTTNG_PACKED set_shm_path;
+ struct {
+ uint32_t pid;
+ } LTTNG_PACKED pid_tracker;
+ struct {
+ uint32_t length;
+ } LTTNG_PACKED trigger;
} u;
} LTTNG_PACKED;
struct lttng_event_exclusion {
uint32_t count;
char padding[LTTNG_EVENT_EXCLUSION_PADDING];
- char names[LTTNG_SYMBOL_NAME_LEN][0];
+ char names[0][LTTNG_SYMBOL_NAME_LEN];
+} LTTNG_PACKED;
+
+#define LTTNG_EVENT_EXCLUSION_NAME_AT(_exclusion, _i) \
+ (&(_exclusion)->names[_i][0])
+
+/*
+ * Event command header.
+ */
+struct lttcomm_event_command_header {
+ /* Number of events */
+ uint32_t nb_events;
+} LTTNG_PACKED;
+
+/*
+ * Event extended info header. This is the structure preceding each
+ * extended info data.
+ */
+struct lttcomm_event_extended_header {
+ /*
+ * Size of filter string immediately following this header.
+ * This size includes the terminal null character.
+ */
+ uint32_t filter_len;
+
+ /*
+ * Number of exclusion names, immediately following the filter
+ * string. Each exclusion name has a fixed length of
+ * LTTNG_SYMBOL_NAME_LEN bytes, including the terminal null
+ * character.
+ */
+ uint32_t nb_exclusions;
} LTTNG_PACKED;
/*
uint32_t cmd_type; /* enum lttcomm_sessiond_command */
uint32_t ret_code; /* enum lttcomm_return_code */
uint32_t pid; /* pid_t */
+ uint32_t cmd_header_size;
uint32_t data_size;
- /* Contains: trace_name + data */
- char payload[];
} LTTNG_PACKED;
struct lttcomm_lttng_output_id {
uint32_t monitor;
/* timer to check the streams usage in live mode (usec). */
unsigned int live_timer_interval;
+ /* timer to sample a channel's positions (usec). */
+ unsigned int monitor_timer_interval;
} LTTNG_PACKED channel; /* Only used by Kernel. */
struct {
uint64_t stream_key;
int32_t overwrite; /* 1: overwrite, 0: discard */
uint32_t switch_timer_interval; /* usec */
uint32_t read_timer_interval; /* usec */
- unsigned int live_timer_interval; /* usec */
+ unsigned int live_timer_interval; /* usec */
+ uint32_t monitor_timer_interval; /* usec */
int32_t output; /* splice, mmap */
int32_t type; /* metadata or per_cpu */
uint64_t session_id; /* Tracing session id */
* because the application can be in the tracing for instance.
*/
uint32_t ust_app_uid;
+ int64_t blocking_timeout;
+ char root_shm_path[PATH_MAX];
+ char shm_path[PATH_MAX];
} LTTNG_PACKED ask_channel;
struct {
uint64_t key;
uint64_t key; /* Metadata channel key. */
uint64_t target_offset; /* Offset in the consumer */
uint64_t len; /* Length of metadata to be received. */
+ uint64_t version; /* Version of the metadata. */
} LTTNG_PACKED push_metadata;
struct {
uint64_t key; /* Metadata channel key. */
struct {
uint64_t key; /* Channel key. */
} LTTNG_PACKED flush_channel;
+ struct {
+ uint64_t key; /* Channel key. */
+ } LTTNG_PACKED clear_quiescent_channel;
struct {
char pathname[PATH_MAX];
/* Indicate if the snapshot goes on the relayd or locally. */
uint32_t metadata; /* This a metadata snapshot. */
uint64_t relayd_id; /* Relayd id if apply. */
uint64_t key;
- uint64_t max_stream_size;
+ uint64_t nb_packets_per_stream;
} LTTNG_PACKED snapshot_channel;
struct {
uint64_t channel_key;
uint64_t net_seq_idx;
} LTTNG_PACKED sent_streams;
+ struct {
+ uint64_t session_id;
+ uint64_t channel_key;
+ } LTTNG_PACKED discarded_events;
+ struct {
+ uint64_t session_id;
+ uint64_t channel_key;
+ } LTTNG_PACKED lost_packets;
+ struct {
+ uint64_t session_id;
+ } LTTNG_PACKED regenerate_metadata;
+ struct {
+ char pathname[PATH_MAX];
+ uint32_t metadata; /* This is a metadata channel. */
+ uint64_t relayd_id; /* Relayd id if apply. */
+ uint64_t key;
+ uint64_t new_chunk_id;
+ } LTTNG_PACKED rotate_channel;
+ struct {
+ char old_path[LTTNG_PATH_MAX];
+ char new_path[LTTNG_PATH_MAX];
+ uint64_t relayd_id; /* Relayd id if apply. */
+ uint64_t session_id;
+ uint32_t uid;
+ uint32_t gid;
+ } LTTNG_PACKED rotate_rename;
+ struct {
+ char path[LTTNG_PATH_MAX];
+ uint64_t relayd_id; /* Relayd id if apply. */
+ uint64_t session_id;
+ uint32_t uid;
+ uint32_t gid;
+ } LTTNG_PACKED mkdir;
} u;
} LTTNG_PACKED;
+/*
+ * Channel monitoring message returned to the session daemon on every
+ * monitor timer expiration.
+ */
+struct lttcomm_consumer_channel_monitor_msg {
+ /* Key of the sampled channel. */
+ uint64_t key;
+ /*
+ * Lowest and highest usage (bytes) at the moment the sample was taken.
+ */
+ uint64_t lowest, highest;
+} LTTNG_PACKED;
+
/*
* Status message returned to the sessiond after a received command.
*/