f5e4dc950b4875ef5e239e2ec497042d34643c59
[lttng-tools.git] / include / lttng / rotate-internal.h
1 /*
2 * Copyright (C) 2017 - Julien Desfossez <jdesfossez@efficios.com>
3 *
4 * This library is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU Lesser General Public License, version 2.1 only,
6 * as published by the Free Software Foundation.
7 *
8 * This library is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
11 * for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this library; if not, write to the Free Software Foundation,
15 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16 */
17
18 #ifndef LTTNG_ROTATE_INTERNAL_ABI_H
19 #define LTTNG_ROTATE_INTERNAL_ABI_H
20
21 #include <limits.h>
22 #include <stdint.h>
23 #include <stdbool.h>
24
25 #include <lttng/constant.h>
26 #include <lttng/rotation.h>
27 #include <common/macros.h>
28
29 /*
30 * Object used as input parameter to the rotate session API for immediate
31 * rotations.
32 * This is opaque to the public library.
33 */
34 struct lttng_rotation_immediate_attr {
35 /* Session name to rotate. */
36 char session_name[LTTNG_NAME_MAX];
37 /* For the rotate pending request. */
38 uint64_t rotate_id;
39 };
40
41 /*
42 * Object used as input parameter to the lttng_rotate_schedule API for
43 * automatic rotations.
44 * This is opaque to the public library.
45 */
46 struct lttng_rotation_schedule_attr {
47 /* Session name to rotate. */
48 char session_name[LTTNG_NAME_MAX];
49 /* > 0 if a timer is set. */
50 uint64_t timer_us;
51 /* > 0 if the session should rotate when it has written that many bytes. */
52 uint64_t size;
53 } LTTNG_PACKED;
54
55 /*
56 * Object returned by the rotate session API.
57 * This is opaque to the public library.
58 */
59 struct lttng_rotation_handle {
60 char session_name[LTTNG_NAME_MAX];
61 /*
62 * ID of the rotate command.
63 * This matches the session->rotate_count, so the handle is valid until
64 * the next rotate command. After that, the rotation_get_state command
65 * returns the "expired" state.
66 */
67 uint64_t rotation_id;
68 /*
69 * Where the rotated (readable) trace has been stored when the
70 * rotation is completed.
71 */
72 struct {
73 bool is_set;
74 char path[LTTNG_PATH_MAX];
75 } archive_location;
76 };
77
78 /*
79 * Internal objects between lttng-ctl and the session daemon, the values
80 * are then copied to the user's lttng_rotation_handle object.
81 */
82
83 /* For the LTTNG_ROTATE_SESSION command. */
84 struct lttng_rotate_session_return {
85 uint64_t rotation_id;
86 } LTTNG_PACKED;
87
88 /* For the LTTNG_ROTATION_GET_INFO command. */
89 struct lttng_rotation_get_info_return {
90 /* Represents values defined in enum lttng_rotation_state. */
91 int32_t status;
92 char path[LTTNG_PATH_MAX];
93 } LTTNG_PACKED;
94
95 /* For the LTTNG_SESSION_GET_CURRENT_OUTPUT command. */
96 struct lttng_session_get_current_output_return {
97 char path[LTTNG_PATH_MAX];
98 } LTTNG_PACKED;
99
100 /* For the LTTNG_ROTATION_SCHEDULE_GET_TIMER_PERIOD command. */
101 struct lttng_rotation_schedule_get_timer_period {
102 uint64_t rotate_timer;
103 } LTTNG_PACKED;
104
105 /* For the LTTNG_ROTATION_SCHEDULE_GET_SIZE command. */
106 struct lttng_rotation_schedule_get_size {
107 uint64_t rotate_size;
108 } LTTNG_PACKED;
109
110 #endif /* LTTNG_ROTATE_INTERNAL_ABI_H */
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