Commit | Line | Data |
---|---|---|
ab0ee2ca | 1 | /* |
ab5be9fa | 2 | * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
ab0ee2ca | 3 | * |
ab5be9fa | 4 | * SPDX-License-Identifier: GPL-2.0-only |
ab0ee2ca | 5 | * |
ab0ee2ca JG |
6 | */ |
7 | ||
8 | #include <lttng/trigger/trigger.h> | |
9 | #include <lttng/lttng-error.h> | |
10 | #include "notification-thread.h" | |
11 | #include "notification-thread-commands.h" | |
12 | #include <common/error.h> | |
ab0ee2ca JG |
13 | #include <unistd.h> |
14 | #include <stdint.h> | |
15 | #include <inttypes.h> | |
16 | ||
17 | static | |
18 | void init_notification_thread_command(struct notification_thread_command *cmd) | |
19 | { | |
ab0ee2ca | 20 | CDS_INIT_LIST_HEAD(&cmd->cmd_list_node); |
8ada111f | 21 | lttng_waiter_init(&cmd->reply_waiter); |
ab0ee2ca JG |
22 | } |
23 | ||
24 | static | |
25 | int run_command_wait(struct notification_thread_handle *handle, | |
26 | struct notification_thread_command *cmd) | |
27 | { | |
28 | int ret; | |
29 | uint64_t notification_counter = 1; | |
30 | ||
ab0ee2ca JG |
31 | pthread_mutex_lock(&handle->cmd_queue.lock); |
32 | /* Add to queue. */ | |
33 | cds_list_add_tail(&cmd->cmd_list_node, | |
34 | &handle->cmd_queue.list); | |
35 | /* Wake-up thread. */ | |
58d3fed5 | 36 | ret = lttng_write(lttng_pipe_get_writefd(handle->cmd_queue.event_pipe), |
ab0ee2ca | 37 | ¬ification_counter, sizeof(notification_counter)); |
58d3fed5 | 38 | if (ret != sizeof(notification_counter)) { |
ab0ee2ca JG |
39 | PERROR("write to notification thread's queue event fd"); |
40 | /* | |
41 | * Remove the command from the list so the notification | |
42 | * thread does not process it. | |
43 | */ | |
44 | cds_list_del(&cmd->cmd_list_node); | |
45 | goto error_unlock_queue; | |
46 | } | |
47 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
48 | ||
8ada111f | 49 | lttng_waiter_wait(&cmd->reply_waiter); |
ab0ee2ca JG |
50 | return 0; |
51 | error_unlock_queue: | |
52 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
53 | return -1; | |
54 | } | |
55 | ||
0ab399e0 JG |
56 | static |
57 | struct notification_thread_command *notification_thread_command_copy( | |
58 | const struct notification_thread_command *original_cmd) | |
59 | { | |
60 | struct notification_thread_command *new_cmd; | |
61 | ||
62 | new_cmd = zmalloc(sizeof(*new_cmd)); | |
63 | if (!new_cmd) { | |
64 | goto end; | |
65 | } | |
66 | ||
67 | *new_cmd = *original_cmd; | |
68 | init_notification_thread_command(new_cmd); | |
69 | end: | |
70 | return new_cmd; | |
71 | } | |
72 | ||
73 | static | |
74 | int run_command_no_wait(struct notification_thread_handle *handle, | |
75 | const struct notification_thread_command *in_cmd) | |
76 | { | |
77 | int ret; | |
78 | uint64_t notification_counter = 1; | |
79 | struct notification_thread_command *new_cmd = | |
80 | notification_thread_command_copy(in_cmd); | |
81 | ||
82 | if (!new_cmd) { | |
83 | goto error; | |
84 | } | |
85 | new_cmd->is_async = true; | |
86 | ||
87 | pthread_mutex_lock(&handle->cmd_queue.lock); | |
88 | /* Add to queue. */ | |
89 | cds_list_add_tail(&new_cmd->cmd_list_node, | |
90 | &handle->cmd_queue.list); | |
91 | /* Wake-up thread. */ | |
92 | ret = lttng_write(lttng_pipe_get_writefd(handle->cmd_queue.event_pipe), | |
93 | ¬ification_counter, sizeof(notification_counter)); | |
94 | if (ret != sizeof(notification_counter)) { | |
95 | PERROR("write to notification thread's queue event fd"); | |
96 | /* | |
97 | * Remove the command from the list so the notification | |
98 | * thread does not process it. | |
99 | */ | |
100 | cds_list_del(&new_cmd->cmd_list_node); | |
101 | goto error_unlock_queue; | |
102 | } | |
103 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
104 | return 0; | |
105 | error_unlock_queue: | |
106 | free(new_cmd); | |
107 | pthread_mutex_unlock(&handle->cmd_queue.lock); | |
108 | error: | |
109 | return -1; | |
110 | } | |
111 | ||
ab0ee2ca JG |
112 | enum lttng_error_code notification_thread_command_register_trigger( |
113 | struct notification_thread_handle *handle, | |
114 | struct lttng_trigger *trigger) | |
115 | { | |
116 | int ret; | |
117 | enum lttng_error_code ret_code; | |
0ab399e0 | 118 | struct notification_thread_command cmd = {}; |
ab0ee2ca JG |
119 | |
120 | init_notification_thread_command(&cmd); | |
121 | ||
122 | cmd.type = NOTIFICATION_COMMAND_TYPE_REGISTER_TRIGGER; | |
123 | cmd.parameters.trigger = trigger; | |
124 | ||
125 | ret = run_command_wait(handle, &cmd); | |
126 | if (ret) { | |
127 | ret_code = LTTNG_ERR_UNK; | |
128 | goto end; | |
129 | } | |
130 | ret_code = cmd.reply_code; | |
131 | end: | |
132 | return ret_code; | |
133 | } | |
134 | ||
135 | enum lttng_error_code notification_thread_command_unregister_trigger( | |
136 | struct notification_thread_handle *handle, | |
137 | struct lttng_trigger *trigger) | |
138 | { | |
139 | int ret; | |
140 | enum lttng_error_code ret_code; | |
0ab399e0 | 141 | struct notification_thread_command cmd = {}; |
ab0ee2ca JG |
142 | |
143 | init_notification_thread_command(&cmd); | |
144 | ||
145 | cmd.type = NOTIFICATION_COMMAND_TYPE_UNREGISTER_TRIGGER; | |
146 | cmd.parameters.trigger = trigger; | |
147 | ||
148 | ret = run_command_wait(handle, &cmd); | |
149 | if (ret) { | |
150 | ret_code = LTTNG_ERR_UNK; | |
151 | goto end; | |
152 | } | |
153 | ret_code = cmd.reply_code; | |
154 | end: | |
155 | return ret_code; | |
156 | } | |
157 | ||
158 | enum lttng_error_code notification_thread_command_add_channel( | |
159 | struct notification_thread_handle *handle, | |
160 | char *session_name, uid_t uid, gid_t gid, | |
161 | char *channel_name, uint64_t key, | |
162 | enum lttng_domain_type domain, uint64_t capacity) | |
163 | { | |
164 | int ret; | |
165 | enum lttng_error_code ret_code; | |
0ab399e0 | 166 | struct notification_thread_command cmd = {}; |
ab0ee2ca JG |
167 | |
168 | init_notification_thread_command(&cmd); | |
169 | ||
170 | cmd.type = NOTIFICATION_COMMAND_TYPE_ADD_CHANNEL; | |
8abe313a JG |
171 | cmd.parameters.add_channel.session.name = session_name; |
172 | cmd.parameters.add_channel.session.uid = uid; | |
173 | cmd.parameters.add_channel.session.gid = gid; | |
174 | cmd.parameters.add_channel.channel.name = channel_name; | |
175 | cmd.parameters.add_channel.channel.key = key; | |
176 | cmd.parameters.add_channel.channel.domain = domain; | |
177 | cmd.parameters.add_channel.channel.capacity = capacity; | |
ab0ee2ca JG |
178 | |
179 | ret = run_command_wait(handle, &cmd); | |
180 | if (ret) { | |
181 | ret_code = LTTNG_ERR_UNK; | |
182 | goto end; | |
183 | } | |
184 | ret_code = cmd.reply_code; | |
185 | end: | |
186 | return ret_code; | |
187 | } | |
188 | ||
189 | enum lttng_error_code notification_thread_command_remove_channel( | |
190 | struct notification_thread_handle *handle, | |
191 | uint64_t key, enum lttng_domain_type domain) | |
192 | { | |
193 | int ret; | |
194 | enum lttng_error_code ret_code; | |
0ab399e0 | 195 | struct notification_thread_command cmd = {}; |
ab0ee2ca JG |
196 | |
197 | init_notification_thread_command(&cmd); | |
198 | ||
199 | cmd.type = NOTIFICATION_COMMAND_TYPE_REMOVE_CHANNEL; | |
200 | cmd.parameters.remove_channel.key = key; | |
201 | cmd.parameters.remove_channel.domain = domain; | |
202 | ||
203 | ret = run_command_wait(handle, &cmd); | |
204 | if (ret) { | |
205 | ret_code = LTTNG_ERR_UNK; | |
206 | goto end; | |
207 | } | |
208 | ret_code = cmd.reply_code; | |
209 | end: | |
210 | return ret_code; | |
211 | } | |
212 | ||
731c1b12 JG |
213 | enum lttng_error_code notification_thread_command_session_rotation_ongoing( |
214 | struct notification_thread_handle *handle, | |
215 | const char *session_name, uid_t uid, gid_t gid, | |
216 | uint64_t trace_archive_chunk_id) | |
217 | { | |
218 | int ret; | |
219 | enum lttng_error_code ret_code; | |
0ab399e0 | 220 | struct notification_thread_command cmd = {}; |
731c1b12 JG |
221 | |
222 | init_notification_thread_command(&cmd); | |
223 | ||
224 | cmd.type = NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_ONGOING; | |
225 | cmd.parameters.session_rotation.session_name = session_name; | |
226 | cmd.parameters.session_rotation.uid = uid; | |
227 | cmd.parameters.session_rotation.gid = gid; | |
228 | cmd.parameters.session_rotation.trace_archive_chunk_id = | |
229 | trace_archive_chunk_id; | |
230 | ||
231 | ret = run_command_wait(handle, &cmd); | |
232 | if (ret) { | |
233 | ret_code = LTTNG_ERR_UNK; | |
234 | goto end; | |
235 | } | |
236 | ret_code = cmd.reply_code; | |
237 | end: | |
238 | return ret_code; | |
239 | } | |
240 | ||
241 | enum lttng_error_code notification_thread_command_session_rotation_completed( | |
242 | struct notification_thread_handle *handle, | |
243 | const char *session_name, uid_t uid, gid_t gid, | |
244 | uint64_t trace_archive_chunk_id, | |
245 | struct lttng_trace_archive_location *location) | |
246 | { | |
247 | int ret; | |
248 | enum lttng_error_code ret_code; | |
0ab399e0 | 249 | struct notification_thread_command cmd = {}; |
731c1b12 JG |
250 | |
251 | init_notification_thread_command(&cmd); | |
252 | ||
253 | cmd.type = NOTIFICATION_COMMAND_TYPE_SESSION_ROTATION_COMPLETED; | |
254 | cmd.parameters.session_rotation.session_name = session_name; | |
255 | cmd.parameters.session_rotation.uid = uid; | |
256 | cmd.parameters.session_rotation.gid = gid; | |
257 | cmd.parameters.session_rotation.trace_archive_chunk_id = | |
258 | trace_archive_chunk_id; | |
259 | cmd.parameters.session_rotation.location = location; | |
260 | ||
261 | ret = run_command_wait(handle, &cmd); | |
262 | if (ret) { | |
263 | ret_code = LTTNG_ERR_UNK; | |
264 | goto end; | |
265 | } | |
266 | ret_code = cmd.reply_code; | |
267 | end: | |
268 | return ret_code; | |
269 | } | |
270 | ||
ab0ee2ca JG |
271 | void notification_thread_command_quit( |
272 | struct notification_thread_handle *handle) | |
273 | { | |
274 | int ret; | |
0ab399e0 | 275 | struct notification_thread_command cmd = {}; |
ab0ee2ca JG |
276 | |
277 | init_notification_thread_command(&cmd); | |
278 | ||
279 | cmd.type = NOTIFICATION_COMMAND_TYPE_QUIT; | |
280 | ret = run_command_wait(handle, &cmd); | |
281 | assert(!ret && cmd.reply_code == LTTNG_OK); | |
282 | } | |
f2b3ef9f JG |
283 | |
284 | int notification_thread_client_communication_update( | |
285 | struct notification_thread_handle *handle, | |
286 | notification_client_id id, | |
287 | enum client_transmission_status transmission_status) | |
288 | { | |
289 | struct notification_thread_command cmd = {}; | |
290 | ||
291 | init_notification_thread_command(&cmd); | |
292 | ||
293 | cmd.type = NOTIFICATION_COMMAND_TYPE_CLIENT_COMMUNICATION_UPDATE; | |
294 | cmd.parameters.client_communication_update.id = id; | |
295 | cmd.parameters.client_communication_update.status = transmission_status; | |
296 | return run_command_no_wait(handle, &cmd); | |
297 | } |