lttng-ctl: separate support of named/unnamed trigger registration
[lttng-tools.git] / src / common / sessiond-comm / agent.h
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f20baf8e 1/*
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2 * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
3 * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
f20baf8e 4 *
ab5be9fa 5 * SPDX-License-Identifier: GPL-2.0-only
f20baf8e 6 *
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7 */
8
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9#ifndef AGENT_COMM
10#define AGENT_COMM
f20baf8e 11
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12#include <stdint.h>
13
aa52c986 14#include <common/macros.h>
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15#include <lttng/lttng.h>
16
17/*
2f2540d7 18 * Command value passed in the header.
f20baf8e 19 */
022d91ba 20enum lttcomm_agent_command {
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21 AGENT_CMD_LIST = 1,
22 AGENT_CMD_ENABLE = 2,
23 AGENT_CMD_DISABLE = 3,
24 AGENT_CMD_REG_DONE = 4, /* End registration process. */
25 AGENT_CMD_APP_CTX_ENABLE = 5,
26 AGENT_CMD_APP_CTX_DISABLE = 6,
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27};
28
29/*
56cc432e 30 * Return codes from the agent.
f20baf8e 31 */
022d91ba 32enum lttcomm_agent_ret_code {
aa277e3e 33 /* Success, assumed to be the first entry */
bdf64013 34 AGENT_RET_CODE_SUCCESS = 1,
aa277e3e 35 /* Invalid command */
bdf64013 36 AGENT_RET_CODE_INVALID = 2,
aa277e3e 37 /* Unknown logger name */
bdf64013 38 AGENT_RET_CODE_UNKNOWN_NAME = 3,
23c2bd47 39 AGENT_RET_CODE_NR,
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40};
41
42/*
022d91ba 43 * Agent application communication header.
f20baf8e 44 */
022d91ba 45struct lttcomm_agent_hdr {
f20baf8e 46 uint64_t data_size; /* data size following this header */
022d91ba 47 uint32_t cmd; /* Enum of agent command. */
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48 uint32_t cmd_version; /* command version */
49} LTTNG_PACKED;
50
51/*
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52 * Enable event command payload. Will be immediately followed by the
53 * variable-length string representing the filter expression.
f20baf8e 54 */
bdf64013 55struct lttcomm_agent_enable_event {
2106efa0 56 uint32_t loglevel_value;
b2064f54 57 uint32_t loglevel_type;
f20baf8e 58 char name[LTTNG_SYMBOL_NAME_LEN];
a0ba721c 59 uint32_t filter_expression_length;
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60} LTTNG_PACKED;
61
62/*
63 * Disable event command payload.
64 */
bdf64013 65struct lttcomm_agent_disable_event {
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66 char name[LTTNG_SYMBOL_NAME_LEN];
67} LTTNG_PACKED;
68
69/*
56cc432e 70 * Generic reply coming from the agent.
f20baf8e 71 */
022d91ba 72struct lttcomm_agent_generic_reply {
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73 uint32_t ret_code;
74} LTTNG_PACKED;
75
76/*
77 * List command reply header.
78 */
022d91ba 79struct lttcomm_agent_list_reply_hdr {
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80 uint32_t ret_code;
81 uint32_t data_size;
82} LTTNG_PACKED;
83
84/*
56cc432e 85 * List command reply payload coming from the agent.
f20baf8e 86 */
022d91ba 87struct lttcomm_agent_list_reply {
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88 uint32_t nb_event;
89 /* List of event name each of them ending by a NULL byte. */
90 char payload[];
91} LTTNG_PACKED;
92
022d91ba 93#endif /* AGENT_COMM */
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