* 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 <lttng/rotate-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_DISABLE_CHANNEL = 2,
- LTTNG_DISABLE_EVENT = 3,
- LTTNG_DISABLE_ALL_EVENT = 4,
- LTTNG_ENABLE_CHANNEL = 5,
- LTTNG_ENABLE_EVENT = 6,
- LTTNG_ENABLE_ALL_EVENT = 7,
+ LTTNG_ADD_CONTEXT = 0,
+ /* LTTNG_CALIBRATE used to be here */
+ LTTNG_DISABLE_CHANNEL = 2,
+ LTTNG_DISABLE_EVENT = 3,
+ LTTNG_LIST_SYSCALLS = 4,
+ LTTNG_ENABLE_CHANNEL = 5,
+ LTTNG_ENABLE_EVENT = 6,
+ /* 7 */
/* Session daemon command */
- LTTNG_CREATE_SESSION = 8,
- LTTNG_DESTROY_SESSION = 9,
- LTTNG_LIST_CHANNELS = 10,
- LTTNG_LIST_DOMAINS = 11,
- LTTNG_LIST_EVENTS = 12,
- LTTNG_LIST_SESSIONS = 13,
- LTTNG_LIST_TRACEPOINTS = 14,
- LTTNG_REGISTER_CONSUMER = 15,
- LTTNG_START_TRACE = 16,
- LTTNG_STOP_TRACE = 17,
- LTTNG_LIST_TRACEPOINT_FIELDS = 18,
+ LTTNG_CREATE_SESSION = 8,
+ LTTNG_DESTROY_SESSION = 9,
+ LTTNG_LIST_CHANNELS = 10,
+ LTTNG_LIST_DOMAINS = 11,
+ LTTNG_LIST_EVENTS = 12,
+ LTTNG_LIST_SESSIONS = 13,
+ LTTNG_LIST_TRACEPOINTS = 14,
+ LTTNG_REGISTER_CONSUMER = 15,
+ LTTNG_START_TRACE = 16,
+ LTTNG_STOP_TRACE = 17,
+ LTTNG_LIST_TRACEPOINT_FIELDS = 18,
/* Consumer */
- LTTNG_DISABLE_CONSUMER = 19,
- LTTNG_ENABLE_CONSUMER = 20,
- LTTNG_SET_CONSUMER_URI = 21,
+ LTTNG_DISABLE_CONSUMER = 19,
+ LTTNG_ENABLE_CONSUMER = 20,
+ LTTNG_SET_CONSUMER_URI = 21,
/* 22 */
/* 23 */
- LTTNG_DATA_PENDING = 24,
- LTTNG_SNAPSHOT_ADD_OUTPUT = 25,
- LTTNG_SNAPSHOT_DEL_OUTPUT = 26,
- LTTNG_SNAPSHOT_LIST_OUTPUT = 27,
- LTTNG_SNAPSHOT_RECORD = 28,
- LTTNG_CREATE_SESSION_SNAPSHOT = 29,
- LTTNG_CREATE_SESSION_LIVE = 30,
+ LTTNG_DATA_PENDING = 24,
+ LTTNG_SNAPSHOT_ADD_OUTPUT = 25,
+ LTTNG_SNAPSHOT_DEL_OUTPUT = 26,
+ LTTNG_SNAPSHOT_LIST_OUTPUT = 27,
+ LTTNG_SNAPSHOT_RECORD = 28,
+ 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,
+ LTTNG_ROTATION_GET_INFO = 46,
+ LTTNG_ROTATION_SET_SCHEDULE = 47,
+ LTTNG_SESSION_LIST_ROTATION_SCHEDULES = 48,
};
enum lttcomm_relayd_command {
RELAYD_ADD_INDEX = 12,
RELAYD_SEND_INDEX = 13,
RELAYD_CLOSE_INDEX = 14,
- /* Live-reading commands. */
+ /* Live-reading commands (2.4+). */
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. */
+ LTTCOMM_CONSUMERD_ROTATION_FAIL, /* Rotation has failed. */
+ LTTCOMM_CONSUMERD_ROTATE_RENAME_FAILED, /* Rotation rename has failed. */
+ LTTCOMM_CONSUMERD_ROTATION_PENDING_LOCAL_FAILED, /* Rotation pending relay failed. */
+ LTTCOMM_CONSUMERD_ROTATION_PENDING_RELAY_FAILED, /* Rotation pending relay failed. */
+ LTTCOMM_CONSUMERD_MKDIR_FAILED, /* mkdir has failed. */
+ LTTCOMM_CONSUMERD_SNAPSHOT_FAILED, /* snapshot has failed. */
/* 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];
- struct lttng_event event;
+ 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;
- /* exclusion data */
+ /* Exclusion count (fixed-size strings). */
uint32_t exclusion_count;
+ /* Userspace probe location size. */
+ uint32_t userspace_probe_location_len;
/*
* After this structure, the following variable-length
* items are transmitted:
* - char exclusion_names[LTTNG_SYMBOL_NAME_LEN][exclusion_count]
+ * - char filter_expression[expression_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;
+ 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;
+ 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 {
uint32_t size;
} LTTNG_PACKED uri;
struct {
- struct lttng_snapshot_output output;
+ struct lttng_snapshot_output output LTTNG_PACKED;
} LTTNG_PACKED snapshot_output;
struct {
uint32_t wait;
- struct lttng_snapshot_output output;
+ struct lttng_snapshot_output output LTTNG_PACKED;
} LTTNG_PACKED snapshot_record;
struct {
uint32_t nb_uri;
unsigned int timer_interval; /* usec */
} LTTNG_PACKED session_live;
+ 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;
+ struct {
+ uint64_t rotation_id;
+ } LTTNG_PACKED get_rotation_info;
+ struct {
+ /* enum lttng_rotation_schedule_type */
+ uint8_t type;
+ /*
+ * If set == 1, set schedule to value, if set == 0,
+ * clear this schedule type.
+ */
+ uint8_t set;
+ uint64_t value;
+ } LTTNG_PACKED rotation_set_schedule;
} 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;
+
+ /*
+ * Size of the event's userspace probe location (if applicable).
+ */
+ uint32_t userspace_probe_location_len;
} 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 {
* operation.
*/
struct lttcomm_consumer_msg {
- uint32_t cmd_type; /* enum consumerd_command */
+ uint32_t cmd_type; /* enum lttng_consumer_command */
union {
struct {
uint64_t channel_key;
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 cpu; /* On which CPU this stream is assigned. */
/* Tells the consumer if the stream should be or not monitored. */
uint32_t no_monitor;
+ /*
+ * The archive id that was "current" at the time this
+ * stream was created. This is used to determine
+ * whether a rotation request was sent before or after
+ * the creation of a stream.
+ */
+ uint64_t trace_archive_id;
} LTTNG_PACKED stream; /* Only used by Kernel. */
struct {
uint64_t net_index;
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;
+ /*
+ * The archive id that was "current" at the time this
+ * channel was created. This is used to determine
+ * whether a rotation request was sent before or after
+ * the creation of a channel.
+ */
+ uint64_t trace_archive_id;
+ 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;
+ /*
+ * The session's current trace archive id is propagated
+ * since a snapshot triggers the creation of an
+ * ephemeral metadata stream.
+ */
+ uint64_t trace_archive_id;
} 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 {
+ uint64_t session_id;
+ uint64_t chunk_id;
+ } LTTNG_PACKED check_rotation_pending_local;
+ struct {
+ uint64_t relayd_id;
+ uint64_t session_id;
+ uint64_t chunk_id;
+ } LTTNG_PACKED check_rotation_pending_relay;
+ 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;
+ /*
+ * Sum of all the consumed positions for a channel.
+ */
+ uint64_t total_consumed;
+} LTTNG_PACKED;
+
/*
* Status message returned to the sessiond after a received command.
*/
#endif /* HAVE_LIBLTTNG_UST_CTL */
-extern const char *lttcomm_get_readable_code(enum lttcomm_return_code code);
+LTTNG_HIDDEN const char *lttcomm_get_readable_code(enum lttcomm_return_code code);
-extern int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr,
+LTTNG_HIDDEN int lttcomm_init_inet_sockaddr(struct lttcomm_sockaddr *sockaddr,
const char *ip, unsigned int port);
-extern int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr,
+LTTNG_HIDDEN int lttcomm_init_inet6_sockaddr(struct lttcomm_sockaddr *sockaddr,
const char *ip, unsigned int port);
-extern struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto);
-extern int lttcomm_create_sock(struct lttcomm_sock *sock);
-extern struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri);
-extern void lttcomm_destroy_sock(struct lttcomm_sock *sock);
-extern struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src);
-extern void lttcomm_copy_sock(struct lttcomm_sock *dst,
+LTTNG_HIDDEN struct lttcomm_sock *lttcomm_alloc_sock(enum lttcomm_sock_proto proto);
+LTTNG_HIDDEN int lttcomm_create_sock(struct lttcomm_sock *sock);
+LTTNG_HIDDEN struct lttcomm_sock *lttcomm_alloc_sock_from_uri(struct lttng_uri *uri);
+LTTNG_HIDDEN void lttcomm_destroy_sock(struct lttcomm_sock *sock);
+LTTNG_HIDDEN struct lttcomm_sock *lttcomm_alloc_copy_sock(struct lttcomm_sock *src);
+LTTNG_HIDDEN void lttcomm_copy_sock(struct lttcomm_sock *dst,
struct lttcomm_sock *src);
/* Relayd socket object. */
-extern struct lttcomm_relayd_sock *lttcomm_alloc_relayd_sock(
+LTTNG_HIDDEN struct lttcomm_relayd_sock *lttcomm_alloc_relayd_sock(
struct lttng_uri *uri, uint32_t major, uint32_t minor);
-extern int lttcomm_setsockopt_rcv_timeout(int sock, unsigned int msec);
-extern int lttcomm_setsockopt_snd_timeout(int sock, unsigned int msec);
+LTTNG_HIDDEN int lttcomm_setsockopt_rcv_timeout(int sock, unsigned int msec);
+LTTNG_HIDDEN int lttcomm_setsockopt_snd_timeout(int sock, unsigned int msec);
+
+LTTNG_HIDDEN int lttcomm_sock_get_port(const struct lttcomm_sock *sock,
+ uint16_t *port);
+/*
+ * Set a port to an lttcomm_sock. This will have no effect is the socket is
+ * already bound.
+ */
+LTTNG_HIDDEN int lttcomm_sock_set_port(struct lttcomm_sock *sock, uint16_t port);
-extern void lttcomm_init(void);
+LTTNG_HIDDEN void lttcomm_init(void);
/* Get network timeout, in milliseconds */
-extern unsigned long lttcomm_get_network_timeout(void);
+LTTNG_HIDDEN unsigned long lttcomm_get_network_timeout(void);
#endif /* _LTTNG_SESSIOND_COMM_H */
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