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