[lttng-ust.git] / src / common / ustcomm.h

/*
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 * Copyright (C) 2011 EfficiOS Inc.
 * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

/*
 * This header is meant for liblttng and libust internal use ONLY.
 * These declarations should NOT be considered stable API.
 */

#ifndef _UST_COMMON_UST_COMM_H
#define _UST_COMMON_UST_COMM_H

#include <stdint.h>
#include <limits.h>
#include <unistd.h>
#include <lttng/ust-abi.h>
#include <lttng/ust-error.h>
#include <lttng/ust-compiler.h>
#include <lttng/ust-ctl.h>

/*
 * Default timeout the application waits for the sessiond to send its
 * "register done" command. Can be overridden with the environment
 * variable "LTTNG_UST_REGISTER_TIMEOUT". Note that if the sessiond is not
 * found, the application proceeds directly without any delay.
 */
#define LTTNG_UST_DEFAULT_CONSTRUCTOR_TIMEOUT_MS	3000

#define LTTNG_DEFAULT_RUNDIR				LTTNG_SYSTEM_RUNDIR
#define LTTNG_DEFAULT_HOME_RUNDIR			".lttng"

/* Queue size of listen(2) */
#define LTTNG_UST_COMM_MAX_LISTEN			10
#define LTTNG_UST_COMM_REG_MSG_PADDING			64

struct lttng_ust_event_field;
struct lttng_ust_ctx_field;
struct lttng_ust_enum_entry;
struct lttng_integer_type;
struct lttng_ust_session;

struct lttng_ust_ctl_reg_msg {
	uint32_t magic;
	uint32_t major;
	uint32_t minor;
	uint32_t pid;
	uint32_t ppid;
	uint32_t uid;
	uint32_t gid;
	uint32_t bits_per_long;
	uint32_t uint8_t_alignment;
	uint32_t uint16_t_alignment;
	uint32_t uint32_t_alignment;
	uint32_t uint64_t_alignment;
	uint32_t long_alignment;
	uint32_t socket_type;			/* enum lttng_ust_ctl_socket_type */
	char name[LTTNG_UST_ABI_PROCNAME_LEN];	/* process name */
	char padding[LTTNG_UST_COMM_REG_MSG_PADDING];
} __attribute__((packed));

/*
 * Data structure for the commands sent from sessiond to UST.
 */
#define USTCOMM_MSG_PADDING1		32
#define USTCOMM_MSG_PADDING2		32
struct ustcomm_ust_msg {
	uint32_t handle;
	uint32_t cmd;
	char padding[USTCOMM_MSG_PADDING1];
	union {
		struct lttng_ust_abi_channel channel;
		struct lttng_ust_abi_stream stream;
		struct lttng_ust_abi_event event;
		struct lttng_ust_abi_context context;
		struct lttng_ust_abi_tracer_version version;
		struct lttng_ust_abi_tracepoint_iter tracepoint;
		struct {
			uint32_t data_size;	/* following filter data */
			uint32_t reloc_offset;
			uint64_t seqnum;
		} __attribute__((packed)) filter;
		struct {
			uint32_t count;	/* how many names follow */
		} __attribute__((packed)) exclusion;
		struct {
			uint32_t data_size;	/* following capture data */
			uint32_t reloc_offset;
			uint64_t seqnum;
		} __attribute__((packed)) capture;
		struct lttng_ust_abi_counter counter;
		struct lttng_ust_abi_counter_global counter_global;
		struct lttng_ust_abi_counter_cpu counter_cpu;
		/*
		 * For lttng_ust_abi_EVENT_NOTIFIER_CREATE, a struct
		 * lttng_ust_abi_event_notifier implicitly follows struct
		 * ustcomm_ust_msg.
		 */
		struct {
			/* Length of struct lttng_ust_abi_event_notifier */
			uint32_t len;
		} event_notifier;
		char padding[USTCOMM_MSG_PADDING2];
	} u;
} __attribute__((packed));

/*
 * Data structure for the response from UST to the session daemon.
 * cmd_type is sent back in the reply for validation.
 */
#define USTCOMM_REPLY_PADDING1		32
#define USTCOMM_REPLY_PADDING2		32
struct ustcomm_ust_reply {
	uint32_t handle;
	uint32_t cmd;
	int32_t ret_code;	/* enum ustcomm_return_code */
	uint32_t ret_val;	/* return value */
	char padding[USTCOMM_REPLY_PADDING1];
	union {
		struct {
			uint64_t memory_map_size;
		} __attribute__((packed)) channel;
		struct {
			uint64_t memory_map_size;
		} __attribute__((packed)) stream;
		struct lttng_ust_abi_tracer_version version;
		struct lttng_ust_abi_tracepoint_iter tracepoint;
		char padding[USTCOMM_REPLY_PADDING2];
	} u;
} __attribute__((packed));

struct ustcomm_notify_hdr {
	uint32_t notify_cmd;
} __attribute__((packed));

#define USTCOMM_NOTIFY_EVENT_MSG_PADDING	32
struct ustcomm_notify_event_msg {
	uint32_t session_objd;
	uint32_t channel_objd;
	char event_name[LTTNG_UST_ABI_SYM_NAME_LEN];
	int32_t loglevel;
	uint32_t signature_len;
	uint32_t fields_len;
	uint32_t model_emf_uri_len;
	char padding[USTCOMM_NOTIFY_EVENT_MSG_PADDING];
	/* followed by signature, fields, and model_emf_uri */
} __attribute__((packed));

#define USTCOMM_NOTIFY_EVENT_REPLY_PADDING	32
struct ustcomm_notify_event_reply {
	int32_t ret_code;	/* 0: ok, negative: error code */
	uint32_t event_id;
	char padding[USTCOMM_NOTIFY_EVENT_REPLY_PADDING];
} __attribute__((packed));

#define USTCOMM_NOTIFY_ENUM_MSG_PADDING		32
struct ustcomm_notify_enum_msg {
	uint32_t session_objd;
	char enum_name[LTTNG_UST_ABI_SYM_NAME_LEN];
	uint32_t entries_len;
	char padding[USTCOMM_NOTIFY_ENUM_MSG_PADDING];
	/* followed by enum entries */
} __attribute__((packed));

#define USTCOMM_NOTIFY_EVENT_REPLY_PADDING	32
struct ustcomm_notify_enum_reply {
	int32_t ret_code;	/* 0: ok, negative: error code */
	uint64_t enum_id;
	char padding[USTCOMM_NOTIFY_EVENT_REPLY_PADDING];
} __attribute__((packed));

#define USTCOMM_NOTIFY_CHANNEL_MSG_PADDING	32
struct ustcomm_notify_channel_msg {
	uint32_t session_objd;
	uint32_t channel_objd;
	uint32_t ctx_fields_len;
	char padding[USTCOMM_NOTIFY_CHANNEL_MSG_PADDING];
	/* followed by context fields */
} __attribute__((packed));

#define USTCOMM_NOTIFY_CHANNEL_REPLY_PADDING	32
struct ustcomm_notify_channel_reply {
	int32_t ret_code;	/* 0: ok, negative: error code */
	uint32_t chan_id;
	uint32_t header_type;	/* enum lttng_ust_ctl_channel_header */
	char padding[USTCOMM_NOTIFY_CHANNEL_REPLY_PADDING];
} __attribute__((packed));

/*
 * LTTNG_UST_TRACEPOINT_FIELD_LIST reply is followed by a
 * struct lttng_ust_field_iter field.
 */

int ustcomm_create_unix_sock(const char *pathname)
	__attribute__((visibility("hidden")));

int ustcomm_connect_unix_sock(const char *pathname,
	long timeout)
	__attribute__((visibility("hidden")));

int ustcomm_accept_unix_sock(int sock)
	__attribute__((visibility("hidden")));

int ustcomm_listen_unix_sock(int sock)
	__attribute__((visibility("hidden")));

int ustcomm_shutdown_unix_sock(int sock)
	__attribute__((visibility("hidden")));

int ustcomm_close_unix_sock(int sock)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_unix_sock(int sock, void *buf, size_t len)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_send_unix_sock(int sock, const void *buf, size_t len)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_send_fds_unix_sock(int sock, int *fds, size_t nb_fd)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_fds_unix_sock(int sock, int *fds, size_t nb_fd)
	__attribute__((visibility("hidden")));

const char *ustcomm_get_readable_code(int code)
	__attribute__((visibility("hidden")));

int ustcomm_send_app_msg(int sock, struct ustcomm_ust_msg *lum)
	__attribute__((visibility("hidden")));

int ustcomm_recv_app_reply(int sock, struct ustcomm_ust_reply *lur,
	uint32_t expected_handle, uint32_t expected_cmd)
	__attribute__((visibility("hidden")));

int ustcomm_send_app_cmd(int sock,
		struct ustcomm_ust_msg *lum,
		struct ustcomm_ust_reply *lur)
	__attribute__((visibility("hidden")));

int ustcomm_recv_fd(int sock)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_channel_from_sessiond(int sock,
		void **chan_data, uint64_t len, int *wakeup_fd)
	__attribute__((visibility("hidden")));

int ustcomm_recv_stream_from_sessiond(int sock,
		uint64_t *memory_map_size,
		int *shm_fd, int *wakeup_fd)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_event_notifier_notif_fd_from_sessiond(int sock,
		int *event_notifier_notif_fd)
	__attribute__((visibility("hidden")));

ssize_t ustcomm_recv_counter_from_sessiond(int sock,
		void **counter_data, uint64_t len)
	__attribute__((visibility("hidden")));

int ustcomm_recv_counter_shm_from_sessiond(int sock,
		int *shm_fd)
	__attribute__((visibility("hidden")));

/*
 * Returns 0 on success, negative error value on error.
 * Returns -EPIPE or -ECONNRESET if other end has hung up.
 */
int ustcomm_send_reg_msg(int sock,
		enum lttng_ust_ctl_socket_type type,
		uint32_t bits_per_long,
		uint32_t uint8_t_alignment,
		uint32_t uint16_t_alignment,
		uint32_t uint32_t_alignment,
		uint32_t uint64_t_alignment,
		uint32_t long_alignment,
		const char *procname)
	__attribute__((visibility("hidden")));

/*
 * Returns 0 on success, negative error value on error.
 * Returns -EPIPE or -ECONNRESET if other end has hung up.
 */
int ustcomm_register_event(int sock,
	struct lttng_ust_session *session,
	int session_objd,		/* session descriptor */
	int channel_objd,		/* channel descriptor */
	const char *event_name,		/* event name (input) */
	int loglevel,
	const char *signature,		/* event signature (input) */
	size_t nr_fields,		/* fields */
	const struct lttng_ust_event_field * const *fields,
	const char *model_emf_uri,
	uint32_t *id)			/* event id (output) */
	__attribute__((visibility("hidden")));

/*
 * Returns 0 on success, negative error value on error.
 * Returns -EPIPE or -ECONNRESET if other end has hung up.
 */
int ustcomm_register_enum(int sock,
	int session_objd,		/* session descriptor */
	const char *enum_name,		/* enum name (input) */
	size_t nr_entries,		/* entries */
	const struct lttng_ust_enum_entry * const *entries,
	uint64_t *id)			/* enum id (output) */
	__attribute__((visibility("hidden")));

/*
 * Returns 0 on success, negative error value on error.
 * Returns -EPIPE or -ECONNRESET if other end has hung up.
 */
int ustcomm_register_channel(int sock,
	struct lttng_ust_session *session,
	int session_objd,		/* session descriptor */
	int channel_objd,		/* channel descriptor */
	size_t nr_ctx_fields,
	struct lttng_ust_ctx_field *ctx_fields,
	uint32_t *chan_id,		/* channel id (output) */
	int *header_type) 		/* header type (output) */
	__attribute__((visibility("hidden")));

int ustcomm_setsockopt_rcv_timeout(int sock, unsigned int msec)
	__attribute__((visibility("hidden")));

int ustcomm_setsockopt_snd_timeout(int sock, unsigned int msec)
	__attribute__((visibility("hidden")));

#endif	/* _UST_COMMON_UST_COMM_H */
Commit	Line	Data
67c5b804	1	/*
c0c0989a	2	* SPDX-License-Identifier: LGPL-2.1-only
15f672f9	3	*
2137460a	4	* Copyright (C) 2011 EfficiOS Inc.
c0c0989a	5	* Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
67c5b804 MD	6	*/
	7
	8	/*
	9	* This header is meant for liblttng and libust internal use ONLY.
	10	* These declarations should NOT be considered stable API.
	11	*/
	12
67534785 MJ	13	#ifndef _UST_COMMON_UST_COMM_H
67534785 MJ	14	#define _UST_COMMON_UST_COMM_H
c0c0989a	15
fb31eb73	16	#include <stdint.h>
67c5b804	17	#include <limits.h>
57773204	18	#include <unistd.h>
4318ae1b	19	#include <lttng/ust-abi.h>
7bc53e94	20	#include <lttng/ust-error.h>
b3f60bbf	21	#include <lttng/ust-compiler.h>
c785c634	22	#include <lttng/ust-ctl.h>
67c5b804	23
11ff9c7d	24	/*
cf12a773 MD	25	* Default timeout the application waits for the sessiond to send its
cf12a773 MD	26	* "register done" command. Can be overridden with the environment
69400ac4	27	* variable "LTTNG_UST_REGISTER_TIMEOUT". Note that if the sessiond is not
cf12a773	28	* found, the application proceeds directly without any delay.
11ff9c7d	29	*/
156b0cf7	30	#define LTTNG_UST_DEFAULT_CONSTRUCTOR_TIMEOUT_MS 3000
11ff9c7d	31
751d4e91	32	#define LTTNG_DEFAULT_RUNDIR LTTNG_SYSTEM_RUNDIR
32ce8569	33	#define LTTNG_DEFAULT_HOME_RUNDIR ".lttng"
7fc90dca	34
67c5b804	35	/* Queue size of listen(2) */
32ce8569 MD	36	#define LTTNG_UST_COMM_MAX_LISTEN 10
	37	#define LTTNG_UST_COMM_REG_MSG_PADDING 64
	38
25cff019	39	struct lttng_ust_event_field;
daacdbfc	40	struct lttng_ust_ctx_field;
891d6b55	41	struct lttng_ust_enum_entry;
c785c634	42	struct lttng_integer_type;
f69fe5fb	43	struct lttng_ust_session;
32ce8569	44
249cffb5	45	struct lttng_ust_ctl_reg_msg {
32ce8569 MD	46	uint32_t magic;
	47	uint32_t major;
	48	uint32_t minor;
	49	uint32_t pid;
	50	uint32_t ppid;
	51	uint32_t uid;
	52	uint32_t gid;
	53	uint32_t bits_per_long;
	54	uint32_t uint8_t_alignment;
	55	uint32_t uint16_t_alignment;
	56	uint32_t uint32_t_alignment;
	57	uint32_t uint64_t_alignment;
	58	uint32_t long_alignment;
249cffb5	59	uint32_t socket_type; /* enum lttng_ust_ctl_socket_type */
32ce8569 MD	60	char name[LTTNG_UST_ABI_PROCNAME_LEN]; /* process name */
32ce8569 MD	61	char padding[LTTNG_UST_COMM_REG_MSG_PADDING];
9f5ade14	62	} __attribute__((packed));
67c5b804	63
67c5b804	64	/*
e7723462	65	* Data structure for the commands sent from sessiond to UST.
67c5b804	66	*/
32ce8569 MD	67	#define USTCOMM_MSG_PADDING1 32
32ce8569 MD	68	#define USTCOMM_MSG_PADDING2 32
57773204	69	struct ustcomm_ust_msg {
1ece9766	70	uint32_t handle;
46050b1a	71	uint32_t cmd;
32ce8569	72	char padding[USTCOMM_MSG_PADDING1];
67c5b804	73	union {
fd17d7ce MD	74	struct lttng_ust_abi_channel channel;
	75	struct lttng_ust_abi_stream stream;
	76	struct lttng_ust_abi_event event;
	77	struct lttng_ust_abi_context context;
	78	struct lttng_ust_abi_tracer_version version;
	79	struct lttng_ust_abi_tracepoint_iter tracepoint;
2d78951a	80	struct {
2734ca65 CB	81	uint32_t data_size; /* following filter data */
2734ca65 CB	82	uint32_t reloc_offset;
3f6fd224	83	uint64_t seqnum;
9f5ade14	84	} __attribute__((packed)) filter;
75582b3a JI	85	struct {
75582b3a JI	86	uint32_t count; /* how many names follow */
9f5ade14	87	} __attribute__((packed)) exclusion;
d37ecb3f FD	88	struct {
	89	uint32_t data_size; /* following capture data */
	90	uint32_t reloc_offset;
	91	uint64_t seqnum;
9f5ade14	92	} __attribute__((packed)) capture;
fd17d7ce MD	93	struct lttng_ust_abi_counter counter;
	94	struct lttng_ust_abi_counter_global counter_global;
	95	struct lttng_ust_abi_counter_cpu counter_cpu;
8406222c	96	/*
fd17d7ce MD	97	* For lttng_ust_abi_EVENT_NOTIFIER_CREATE, a struct
fd17d7ce MD	98	* lttng_ust_abi_event_notifier implicitly follows struct
8406222c MD	99	* ustcomm_ust_msg.
	100	*/
	101	struct {
fd17d7ce	102	/* Length of struct lttng_ust_abi_event_notifier */
8406222c MD	103	uint32_t len;
8406222c MD	104	} event_notifier;
32ce8569	105	char padding[USTCOMM_MSG_PADDING2];
67c5b804	106	} u;
9f5ade14	107	} __attribute__((packed));
67c5b804	108
9eb62b9c MD	109	/*
	110	* Data structure for the response from UST to the session daemon.
	111	* cmd_type is sent back in the reply for validation.
	112	*/
32ce8569 MD	113	#define USTCOMM_REPLY_PADDING1 32
32ce8569 MD	114	#define USTCOMM_REPLY_PADDING2 32
57773204	115	struct ustcomm_ust_reply {
46050b1a MD	116	uint32_t handle;
46050b1a MD	117	uint32_t cmd;
7f2348b8	118	int32_t ret_code; /* enum ustcomm_return_code */
1ece9766	119	uint32_t ret_val; /* return value */
32ce8569	120	char padding[USTCOMM_REPLY_PADDING1];
9eb62b9c	121	union {
193183fb MD	122	struct {
193183fb MD	123	uint64_t memory_map_size;
9f5ade14	124	} __attribute__((packed)) channel;
381c0f1e MD	125	struct {
381c0f1e MD	126	uint64_t memory_map_size;
9f5ade14	127	} __attribute__((packed)) stream;
fd17d7ce MD	128	struct lttng_ust_abi_tracer_version version;
fd17d7ce MD	129	struct lttng_ust_abi_tracepoint_iter tracepoint;
32ce8569	130	char padding[USTCOMM_REPLY_PADDING2];
9eb62b9c	131	} u;
9f5ade14	132	} __attribute__((packed));
9eb62b9c	133
32ce8569 MD	134	struct ustcomm_notify_hdr {
32ce8569 MD	135	uint32_t notify_cmd;
9f5ade14	136	} __attribute__((packed));
32ce8569 MD	137
	138	#define USTCOMM_NOTIFY_EVENT_MSG_PADDING 32
	139	struct ustcomm_notify_event_msg {
	140	uint32_t session_objd;
	141	uint32_t channel_objd;
fd17d7ce	142	char event_name[LTTNG_UST_ABI_SYM_NAME_LEN];
32ce8569 MD	143	int32_t loglevel;
	144	uint32_t signature_len;
	145	uint32_t fields_len;
	146	uint32_t model_emf_uri_len;
	147	char padding[USTCOMM_NOTIFY_EVENT_MSG_PADDING];
	148	/* followed by signature, fields, and model_emf_uri */
9f5ade14	149	} __attribute__((packed));
32ce8569 MD	150
	151	#define USTCOMM_NOTIFY_EVENT_REPLY_PADDING 32
	152	struct ustcomm_notify_event_reply {
	153	int32_t ret_code; /* 0: ok, negative: error code */
	154	uint32_t event_id;
	155	char padding[USTCOMM_NOTIFY_EVENT_REPLY_PADDING];
9f5ade14	156	} __attribute__((packed));
32ce8569	157
c785c634 MD	158	#define USTCOMM_NOTIFY_ENUM_MSG_PADDING 32
	159	struct ustcomm_notify_enum_msg {
	160	uint32_t session_objd;
fd17d7ce	161	char enum_name[LTTNG_UST_ABI_SYM_NAME_LEN];
c785c634 MD	162	uint32_t entries_len;
	163	char padding[USTCOMM_NOTIFY_ENUM_MSG_PADDING];
	164	/* followed by enum entries */
9f5ade14	165	} __attribute__((packed));
c785c634 MD	166
	167	#define USTCOMM_NOTIFY_EVENT_REPLY_PADDING 32
	168	struct ustcomm_notify_enum_reply {
	169	int32_t ret_code; /* 0: ok, negative: error code */
	170	uint64_t enum_id;
	171	char padding[USTCOMM_NOTIFY_EVENT_REPLY_PADDING];
9f5ade14	172	} __attribute__((packed));
c785c634	173
32ce8569 MD	174	#define USTCOMM_NOTIFY_CHANNEL_MSG_PADDING 32
	175	struct ustcomm_notify_channel_msg {
	176	uint32_t session_objd;
	177	uint32_t channel_objd;
	178	uint32_t ctx_fields_len;
	179	char padding[USTCOMM_NOTIFY_CHANNEL_MSG_PADDING];
	180	/* followed by context fields */
9f5ade14	181	} __attribute__((packed));
32ce8569 MD	182
	183	#define USTCOMM_NOTIFY_CHANNEL_REPLY_PADDING 32
	184	struct ustcomm_notify_channel_reply {
	185	int32_t ret_code; /* 0: ok, negative: error code */
	186	uint32_t chan_id;
249cffb5	187	uint32_t header_type; /* enum lttng_ust_ctl_channel_header */
32ce8569	188	char padding[USTCOMM_NOTIFY_CHANNEL_REPLY_PADDING];
9f5ade14	189	} __attribute__((packed));
32ce8569	190
40003310 MD	191	/*
	192	* LTTNG_UST_TRACEPOINT_FIELD_LIST reply is followed by a
	193	* struct lttng_ust_field_iter field.
	194	*/
	195
1d18d519 MJ	196	int ustcomm_create_unix_sock(const char *pathname)
1d18d519 MJ	197	__attribute__((visibility("hidden")));
ddabe860	198
8f1313b1	199	int ustcomm_connect_unix_sock(const char *pathname,
1d18d519 MJ	200	long timeout)
1d18d519 MJ	201	__attribute__((visibility("hidden")));
ddabe860	202
1d18d519 MJ	203	int ustcomm_accept_unix_sock(int sock)
1d18d519 MJ	204	__attribute__((visibility("hidden")));
ddabe860	205
1d18d519 MJ	206	int ustcomm_listen_unix_sock(int sock)
1d18d519 MJ	207	__attribute__((visibility("hidden")));
ddabe860	208
b2be0f7b MD	209	int ustcomm_shutdown_unix_sock(int sock)
	210	__attribute__((visibility("hidden")));
	211
1d18d519 MJ	212	int ustcomm_close_unix_sock(int sock)
1d18d519 MJ	213	__attribute__((visibility("hidden")));
74d81a6c	214
1d18d519 MJ	215	ssize_t ustcomm_recv_unix_sock(int sock, void *buf, size_t len)
1d18d519 MJ	216	__attribute__((visibility("hidden")));
ddabe860	217
1d18d519 MJ	218	ssize_t ustcomm_send_unix_sock(int sock, const void *buf, size_t len)
1d18d519 MJ	219	__attribute__((visibility("hidden")));
ddabe860	220
1d18d519 MJ	221	ssize_t ustcomm_send_fds_unix_sock(int sock, int *fds, size_t nb_fd)
1d18d519 MJ	222	__attribute__((visibility("hidden")));
ddabe860	223
1d18d519 MJ	224	ssize_t ustcomm_recv_fds_unix_sock(int sock, int *fds, size_t nb_fd)
1d18d519 MJ	225	__attribute__((visibility("hidden")));
74d81a6c	226
1d18d519 MJ	227	const char *ustcomm_get_readable_code(int code)
1d18d519 MJ	228	__attribute__((visibility("hidden")));
ddabe860	229
1d18d519 MJ	230	int ustcomm_send_app_msg(int sock, struct ustcomm_ust_msg *lum)
1d18d519 MJ	231	__attribute__((visibility("hidden")));
ddabe860	232
8f1313b1	233	int ustcomm_recv_app_reply(int sock, struct ustcomm_ust_reply *lur,
1d18d519 MJ	234	uint32_t expected_handle, uint32_t expected_cmd)
1d18d519 MJ	235	__attribute__((visibility("hidden")));
ddabe860	236
8f1313b1	237	int ustcomm_send_app_cmd(int sock,
57773204	238	struct ustcomm_ust_msg *lum,
1d18d519 MJ	239	struct ustcomm_ust_reply *lur)
1d18d519 MJ	240	__attribute__((visibility("hidden")));
ddabe860	241
1d18d519 MJ	242	int ustcomm_recv_fd(int sock)
1d18d519 MJ	243	__attribute__((visibility("hidden")));
67c5b804	244
74d81a6c	245	ssize_t ustcomm_recv_channel_from_sessiond(int sock,
1d18d519 MJ	246	void *chan_data, uint64_t len, int wakeup_fd)
1d18d519 MJ	247	__attribute__((visibility("hidden")));
ddabe860	248
74d81a6c MD	249	int ustcomm_recv_stream_from_sessiond(int sock,
74d81a6c MD	250	uint64_t *memory_map_size,
1d18d519 MJ	251	int shm_fd, int wakeup_fd)
1d18d519 MJ	252	__attribute__((visibility("hidden")));
ddabe860	253
d8d2416d	254	ssize_t ustcomm_recv_event_notifier_notif_fd_from_sessiond(int sock,
1d18d519 MJ	255	int *event_notifier_notif_fd)
1d18d519 MJ	256	__attribute__((visibility("hidden")));
74d81a6c	257
ebabbf58	258	ssize_t ustcomm_recv_counter_from_sessiond(int sock,
1d18d519 MJ	259	void **counter_data, uint64_t len)
1d18d519 MJ	260	__attribute__((visibility("hidden")));
ddabe860	261
ebabbf58	262	int ustcomm_recv_counter_shm_from_sessiond(int sock,
1d18d519 MJ	263	int *shm_fd)
1d18d519 MJ	264	__attribute__((visibility("hidden")));
ebabbf58	265
32ce8569 MD	266	/*
	267	* Returns 0 on success, negative error value on error.
	268	* Returns -EPIPE or -ECONNRESET if other end has hung up.
	269	*/
	270	int ustcomm_send_reg_msg(int sock,
249cffb5	271	enum lttng_ust_ctl_socket_type type,
32ce8569 MD	272	uint32_t bits_per_long,
	273	uint32_t uint8_t_alignment,
	274	uint32_t uint16_t_alignment,
	275	uint32_t uint32_t_alignment,
	276	uint32_t uint64_t_alignment,
c117e988 JG	277	uint32_t long_alignment,
c117e988 JG	278	const char *procname)
1d18d519	279	__attribute__((visibility("hidden")));
32ce8569 MD	280
	281	/*
	282	* Returns 0 on success, negative error value on error.
	283	* Returns -EPIPE or -ECONNRESET if other end has hung up.
	284	*/
	285	int ustcomm_register_event(int sock,
f69fe5fb	286	struct lttng_ust_session *session,
32ce8569 MD	287	int session_objd, /* session descriptor */
	288	int channel_objd, /* channel descriptor */
	289	const char event_name, / event name (input) */
	290	int loglevel,
	291	const char signature, / event signature (input) */
	292	size_t nr_fields, /* fields */
3d33ca1d	293	const struct lttng_ust_event_field * const *fields,
32ce8569	294	const char *model_emf_uri,
1d18d519 MJ	295	uint32_t id) / event id (output) */
1d18d519 MJ	296	__attribute__((visibility("hidden")));
32ce8569	297
c785c634 MD	298	/*
	299	* Returns 0 on success, negative error value on error.
	300	* Returns -EPIPE or -ECONNRESET if other end has hung up.
	301	*/
	302	int ustcomm_register_enum(int sock,
	303	int session_objd, /* session descriptor */
	304	const char enum_name, / enum name (input) */
	305	size_t nr_entries, /* entries */
3d33ca1d	306	const struct lttng_ust_enum_entry * const *entries,
1d18d519 MJ	307	uint64_t id) / enum id (output) */
1d18d519 MJ	308	__attribute__((visibility("hidden")));
c785c634	309
32ce8569 MD	310	/*
	311	* Returns 0 on success, negative error value on error.
	312	* Returns -EPIPE or -ECONNRESET if other end has hung up.
	313	*/
	314	int ustcomm_register_channel(int sock,
f69fe5fb	315	struct lttng_ust_session *session,
32ce8569 MD	316	int session_objd, /* session descriptor */
	317	int channel_objd, /* channel descriptor */
	318	size_t nr_ctx_fields,
4e48b5d2	319	struct lttng_ust_ctx_field *ctx_fields,
32ce8569	320	uint32_t chan_id, / channel id (output) */
1d18d519 MJ	321	int header_type) / header type (output) */
1d18d519 MJ	322	__attribute__((visibility("hidden")));
32ce8569	323
1d18d519 MJ	324	int ustcomm_setsockopt_rcv_timeout(int sock, unsigned int msec)
1d18d519 MJ	325	__attribute__((visibility("hidden")));
ddabe860	326
1d18d519 MJ	327	int ustcomm_setsockopt_snd_timeout(int sock, unsigned int msec)
1d18d519 MJ	328	__attribute__((visibility("hidden")));
ff517991	329
67534785	330	#endif /* _UST_COMMON_UST_COMM_H */