Commit | Line | Data |
---|---|---|
db66e574 | 1 | /* |
ab5be9fa MJ |
2 | * Copyright (C) 2017 Julien Desfossez <jdesfossez@efficios.com> |
3 | * Copyright (C) 2018 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
db66e574 | 4 | * |
ab5be9fa | 5 | * SPDX-License-Identifier: GPL-2.0-only |
db66e574 | 6 | * |
db66e574 JD |
7 | */ |
8 | ||
9 | #define _LGPL_SOURCE | |
10 | #include <lttng/trigger/trigger.h> | |
11 | #include <common/error.h> | |
12 | #include <common/config/session-config.h> | |
13 | #include <common/defaults.h> | |
14 | #include <common/utils.h> | |
15 | #include <common/futex.h> | |
16 | #include <common/align.h> | |
17 | #include <common/time.h> | |
18 | #include <common/hashtable/utils.h> | |
19 | #include <common/kernel-ctl/kernel-ctl.h> | |
3da864a9 | 20 | #include <common/credentials.h> |
db66e574 JD |
21 | #include <sys/eventfd.h> |
22 | #include <sys/stat.h> | |
23 | #include <time.h> | |
24 | #include <signal.h> | |
25 | #include <inttypes.h> | |
26 | ||
90936dcf | 27 | #include <lttng/notification/channel-internal.h> |
d88744a4 JD |
28 | #include <lttng/rotate-internal.h> |
29 | ||
db66e574 JD |
30 | #include "session.h" |
31 | #include "rotate.h" | |
32 | #include "rotation-thread.h" | |
33 | #include "lttng-sessiond.h" | |
34 | #include "health-sessiond.h" | |
35 | #include "cmd.h" | |
36 | #include "utils.h" | |
90936dcf | 37 | #include "notification-thread-commands.h" |
db66e574 JD |
38 | |
39 | #include <urcu.h> | |
40 | #include <urcu/list.h> | |
41 | #include <urcu/rculfhash.h> | |
42 | ||
90936dcf JD |
43 | int subscribe_session_consumed_size_rotation(struct ltt_session *session, uint64_t size, |
44 | struct notification_thread_handle *notification_thread_handle) | |
45 | { | |
46 | int ret; | |
47 | enum lttng_condition_status condition_status; | |
48 | enum lttng_notification_channel_status nc_status; | |
49 | struct lttng_action *action; | |
3da864a9 JR |
50 | const struct lttng_credentials session_creds = { |
51 | .uid = session->uid, | |
52 | .gid = session->gid, | |
53 | }; | |
90936dcf JD |
54 | |
55 | session->rotate_condition = lttng_condition_session_consumed_size_create(); | |
56 | if (!session->rotate_condition) { | |
57 | ERR("Failed to create session consumed size condition object"); | |
58 | ret = -1; | |
59 | goto end; | |
60 | } | |
61 | ||
62 | condition_status = lttng_condition_session_consumed_size_set_threshold( | |
63 | session->rotate_condition, size); | |
64 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
65 | ERR("Could not set session consumed size condition threshold (size = %" PRIu64 ")", | |
66 | size); | |
67 | ret = -1; | |
68 | goto end; | |
69 | } | |
70 | ||
71 | condition_status = | |
72 | lttng_condition_session_consumed_size_set_session_name( | |
73 | session->rotate_condition, session->name); | |
74 | if (condition_status != LTTNG_CONDITION_STATUS_OK) { | |
75 | ERR("Could not set session consumed size condition session name (name = %s)", | |
76 | session->name); | |
77 | ret = -1; | |
78 | goto end; | |
79 | } | |
80 | ||
81 | action = lttng_action_notify_create(); | |
82 | if (!action) { | |
83 | ERR("Could not create notify action"); | |
84 | ret = -1; | |
85 | goto end; | |
86 | } | |
87 | ||
88 | session->rotate_trigger = lttng_trigger_create(session->rotate_condition, | |
89 | action); | |
90 | if (!session->rotate_trigger) { | |
91 | ERR("Could not create size-based rotation trigger"); | |
92 | ret = -1; | |
93 | goto end; | |
94 | } | |
95 | ||
3da864a9 JR |
96 | lttng_trigger_set_credentials( |
97 | session->rotate_trigger, &session_creds); | |
98 | ||
90936dcf JD |
99 | nc_status = lttng_notification_channel_subscribe( |
100 | rotate_notification_channel, session->rotate_condition); | |
101 | if (nc_status != LTTNG_NOTIFICATION_CHANNEL_STATUS_OK) { | |
102 | ERR("Could not subscribe to session consumed size notification"); | |
103 | ret = -1; | |
104 | goto end; | |
105 | } | |
106 | ||
107 | ret = notification_thread_command_register_trigger( | |
108 | notification_thread_handle, session->rotate_trigger); | |
109 | if (ret < 0 && ret != -LTTNG_ERR_TRIGGER_EXISTS) { | |
110 | ERR("Register trigger, %s", lttng_strerror(ret)); | |
111 | ret = -1; | |
112 | goto end; | |
113 | } | |
114 | ||
115 | ret = 0; | |
116 | ||
117 | end: | |
118 | return ret; | |
119 | } | |
120 | ||
121 | int unsubscribe_session_consumed_size_rotation(struct ltt_session *session, | |
122 | struct notification_thread_handle *notification_thread_handle) | |
123 | { | |
124 | int ret = 0; | |
125 | enum lttng_notification_channel_status status; | |
126 | ||
127 | status = lttng_notification_channel_unsubscribe( | |
128 | rotate_notification_channel, | |
129 | session->rotate_condition); | |
130 | if (status != LTTNG_NOTIFICATION_CHANNEL_STATUS_OK) { | |
131 | ERR("Session unsubscribe error: %d", (int) status); | |
132 | ret = -1; | |
133 | goto end; | |
134 | } | |
135 | ||
136 | ret = notification_thread_command_unregister_trigger( | |
137 | notification_thread_handle, session->rotate_trigger); | |
138 | if (ret != LTTNG_OK) { | |
139 | ERR("Session unregister trigger error: %d", ret); | |
140 | goto end; | |
141 | } | |
142 | ||
143 | ret = 0; | |
144 | end: | |
145 | return ret; | |
146 | } |