X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fsessiond-comm%2Fsessiond-comm.h;h=d1a2bd97de18574b82344a6cc52fa169c4ec3a14;hp=d9177cf37d8554c723e94a80a448839071042fc6;hb=fbc9f37df245d544a7705ba576297df791220b44;hpb=0a30bf9be799ddb162530ea7581172e923055973 diff --git a/src/common/sessiond-comm/sessiond-comm.h b/src/common/sessiond-comm/sessiond-comm.h index d9177cf37..d1a2bd97d 100644 --- a/src/common/sessiond-comm/sessiond-comm.h +++ b/src/common/sessiond-comm/sessiond-comm.h @@ -1,20 +1,10 @@ /* - * Copyright (C) 2011 - David Goulet - * Julien Desfossez - * Mathieu Desnoyers + * Copyright (C) 2011 David Goulet + * Copyright (C) 2011 Julien Desfossez + * Copyright (C) 2011 Mathieu Desnoyers * - * 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. + * SPDX-License-Identifier: GPL-2.0-only * - * 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. */ /* @@ -35,7 +25,7 @@ #include #include #include -#include +#include #include #include @@ -51,7 +41,12 @@ #define LTTNG_SESSIOND_COMM_MAX_LISTEN 64 /* Maximum number of FDs that can be sent over a Unix socket */ -#define LTTCOMM_MAX_SEND_FDS 4 +#if defined(__linux__) +/* Based on the kernel's SCM_MAX_FD which is 253 since 2.6.38 (255 before) */ +#define LTTCOMM_MAX_SEND_FDS 253 +#else +#define LTTCOMM_MAX_SEND_FDS 16 +#endif /* * Get the error code index from 0 since LTTCOMM_OK start at 1000 @@ -60,54 +55,58 @@ enum lttcomm_sessiond_command { /* Tracer command */ - LTTNG_ADD_CONTEXT = 0, + 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, + LTTNG_DISABLE_CHANNEL = 2, + LTTNG_DISABLE_EVENT = 3, + LTTNG_LIST_SYSCALLS = 4, + LTTNG_ENABLE_CHANNEL = 5, + LTTNG_ENABLE_EVENT = 6, /* 7 */ /* Session daemon command */ /* 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_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_DATA_PENDING = 24, + LTTNG_SNAPSHOT_ADD_OUTPUT = 25, + LTTNG_SNAPSHOT_DEL_OUTPUT = 26, + LTTNG_SNAPSHOT_LIST_OUTPUT = 27, + LTTNG_SNAPSHOT_RECORD = 28, /* 29 */ /* 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, - LTTNG_CREATE_SESSION_EXT = 49 + LTTNG_SAVE_SESSION = 31, + LTTNG_PROCESS_ATTR_TRACKER_ADD_INCLUDE_VALUE = 32, + LTTNG_PROCESS_ATTR_TRACKER_REMOVE_INCLUDE_VALUE = 33, + LTTNG_PROCESS_ATTR_TRACKER_GET_POLICY = 34, + LTTNG_PROCESS_ATTR_TRACKER_SET_POLICY = 35, + LTTNG_PROCESS_ATTR_TRACKER_GET_INCLUSION_SET = 36, + 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, + LTTNG_CREATE_SESSION_EXT = 49, + LTTNG_CLEAR_SESSION = 50, + LTTNG_LIST_TRIGGERS = 51, }; enum lttcomm_relayd_command { @@ -131,14 +130,18 @@ enum lttcomm_relayd_command { 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, + /* Ask the relay to rotate a set of stream files (2.11+) */ + RELAYD_ROTATE_STREAMS = 18, + /* Ask the relay to create a trace chunk (2.11+) */ + RELAYD_CREATE_TRACE_CHUNK = 19, + /* Ask the relay to close a trace chunk (2.11+) */ + RELAYD_CLOSE_TRACE_CHUNK = 20, + /* Ask the relay whether a trace chunk exists (2.11+) */ + RELAYD_TRACE_CHUNK_EXISTS = 21, + /* Get the current configuration of a relayd peer (2.12+) */ + RELAYD_GET_CONFIGURATION = 22, + + /* Feature branch specific commands start at 10000. */ }; /* @@ -181,6 +184,8 @@ enum lttcomm_return_code { LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_LOCAL, /* Trace chunk exists on consumer daemon. */ LTTCOMM_CONSUMERD_TRACE_CHUNK_EXISTS_REMOTE,/* Trace chunk exists on relay daemon. */ LTTCOMM_CONSUMERD_UNKNOWN_TRACE_CHUNK, /* Unknown trace chunk. */ + LTTCOMM_CONSUMERD_RELAYD_CLEAR_DISALLOWED, /* Relayd does not accept clear command. */ + LTTCOMM_CONSUMERD_UNKNOWN_ERROR, /* Unknown error. */ /* MUST be last element */ LTTCOMM_NR, /* Last element */ @@ -261,6 +266,13 @@ struct lttcomm_proto_ops { size_t len, int flags); }; +struct process_attr_integral_value_comm { + union { + int64_t _signed; + uint64_t _unsigned; + } u; +} LTTNG_PACKED; + /* * Data structure received from lttng client to session daemon. */ @@ -272,7 +284,7 @@ struct lttcomm_session_msg { /* Event data */ struct { char channel_name[LTTNG_SYMBOL_NAME_LEN]; - struct lttng_event event LTTNG_PACKED; + struct lttng_event event; /* Length of following filter expression. */ uint32_t expression_len; /* Length of following bytecode for filter. */ @@ -291,7 +303,7 @@ struct lttcomm_session_msg { } LTTNG_PACKED enable; struct { char channel_name[LTTNG_SYMBOL_NAME_LEN]; - struct lttng_event event LTTNG_PACKED; + struct lttng_event event; /* Length of following filter expression. */ uint32_t expression_len; /* Length of following bytecode for filter. */ @@ -305,14 +317,13 @@ struct lttcomm_session_msg { } LTTNG_PACKED disable; /* Create channel */ struct { - struct lttng_channel chan LTTNG_PACKED; - /* struct lttng_channel_extended is already packed. */ + struct lttng_channel chan; struct lttng_channel_extended extended; } LTTNG_PACKED channel; /* Context */ struct { char channel_name[LTTNG_SYMBOL_NAME_LEN]; - struct lttng_event_context ctx LTTNG_PACKED; + struct lttng_event_context ctx; uint32_t provider_name_len; uint32_t context_name_len; } LTTNG_PACKED context; @@ -331,25 +342,52 @@ struct lttcomm_session_msg { uint32_t size; } LTTNG_PACKED uri; struct { - struct lttng_snapshot_output output LTTNG_PACKED; + struct lttng_snapshot_output output; } LTTNG_PACKED snapshot_output; struct { uint32_t wait; - struct lttng_snapshot_output output LTTNG_PACKED; + struct lttng_snapshot_output output; } 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 */ + struct lttng_save_session_attr attr; } LTTNG_PACKED save_session; struct { char shm_path[PATH_MAX]; } LTTNG_PACKED set_shm_path; struct { - uint32_t pid; - } LTTNG_PACKED pid_tracker; + /* enum lttng_process_attr */ + int32_t process_attr; + /* enum lttng_process_attr_value_type */ + int32_t value_type; + + struct process_attr_integral_value_comm integral_value; + /* + * For user/group names, a variable length, + * zero-terminated, string of length 'name_len' + * (including the terminator) follows. + * + * integral_value should not be used in those cases. + */ + uint32_t name_len; + } LTTNG_PACKED process_attr_tracker_add_remove_include_value; + struct { + /* enum lttng_process_attr */ + int32_t process_attr; + } LTTNG_PACKED process_attr_tracker_get_inclusion_set; + struct { + /* enum lttng_process_attr */ + int32_t process_attr; + } LTTNG_PACKED process_attr_tracker_get_tracking_policy; + struct { + /* enum lttng_process_attr */ + int32_t process_attr; + /* enum lttng_tracking_policy */ + int32_t tracking_policy; + } LTTNG_PACKED process_attr_tracker_set_tracking_policy; struct { uint32_t length; } LTTNG_PACKED trigger; @@ -378,6 +416,8 @@ struct lttcomm_session_msg { /* An lttng_session_descriptor follows. */ } LTTNG_PACKED create_session; } u; + /* Count of fds sent. */ + uint32_t fd_count; } LTTNG_PACKED; #define LTTNG_FILTER_MAX_LEN 65536 @@ -453,6 +493,13 @@ struct lttcomm_session_destroy_command_header { int32_t rotation_state; }; +/* + * tracker command header. + */ +struct lttcomm_tracker_command_header { + uint32_t nb_tracker_id; +} LTTNG_PACKED; + /* * Data structure for the response from sessiond to the lttng client. */ @@ -462,6 +509,7 @@ struct lttcomm_lttng_msg { uint32_t pid; /* pid_t */ uint32_t cmd_header_size; uint32_t data_size; + uint32_t fd_count; } LTTNG_PACKED; struct lttcomm_lttng_output_id { @@ -495,6 +543,8 @@ struct lttcomm_consumer_msg { uint32_t monitor; /* timer to check the streams usage in live mode (usec). */ unsigned int live_timer_interval; + /* is part of a live session */ + uint8_t is_live; /* timer to sample a channel's positions (usec). */ unsigned int monitor_timer_interval; } LTTNG_PACKED channel; /* Only used by Kernel. */ @@ -528,6 +578,7 @@ struct lttcomm_consumer_msg { uint32_t switch_timer_interval; /* usec */ uint32_t read_timer_interval; /* usec */ unsigned int live_timer_interval; /* usec */ + uint8_t is_live; /* is part of a live session */ uint32_t monitor_timer_interval; /* usec */ int32_t output; /* splice, mmap */ int32_t type; /* metadata or per_cpu */ @@ -543,7 +594,7 @@ struct lttcomm_consumer_msg { uint64_t key; /* Unique channel key. */ /* ID of the session's current trace chunk. */ LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED chunk_id; - unsigned char uuid[UUID_LEN]; /* uuid for ust tracer. */ + unsigned char uuid[LTTNG_UUID_LEN]; /* uuid for ust tracer. */ uint32_t chan_id; /* Channel ID on the tracer side. */ uint64_t tracefile_size; /* bytes */ uint32_t tracefile_count; /* number of tracefiles */ @@ -632,23 +683,25 @@ struct lttcomm_consumer_msg { * (relayd_id unset). * * `override_name` is left NULL (all-zeroes) if the - * chunk's name is not overriden. + * chunk's name is not overridden. */ LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED relayd_id; char override_name[LTTNG_NAME_MAX]; uint64_t session_id; uint64_t chunk_id; uint64_t creation_timestamp; - struct { + LTTNG_OPTIONAL_COMM(struct { uint32_t uid; uint32_t gid; - } LTTNG_PACKED credentials; + } LTTNG_PACKED ) LTTNG_PACKED credentials; } LTTNG_PACKED create_trace_chunk; struct { LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED relayd_id; uint64_t session_id; uint64_t chunk_id; uint64_t close_timestamp; + /* enum lttng_trace_chunk_command_type */ + LTTNG_OPTIONAL_COMM(uint32_t) LTTNG_PACKED close_command; } LTTNG_PACKED close_trace_chunk; struct { LTTNG_OPTIONAL_COMM(uint64_t) LTTNG_PACKED relayd_id; @@ -658,6 +711,12 @@ struct lttcomm_consumer_msg { struct { lttng_uuid sessiond_uuid; } LTTNG_PACKED init; + struct { + uint64_t key; + } LTTNG_PACKED clear_channel; + struct { + uint64_t key; + } LTTNG_PACKED open_channel_packets; } u; } LTTNG_PACKED; @@ -691,6 +750,12 @@ struct lttcomm_consumer_status_channel { unsigned int stream_count; } LTTNG_PACKED; +struct lttcomm_consumer_close_trace_chunk_reply { + enum lttcomm_return_code ret_code; + uint32_t path_length; + char path[]; +}; + #ifdef HAVE_LIBLTTNG_UST_CTL #include