Pass lttng_event struct to the set_filter API call
[lttng-tools.git] / src / bin / lttng-sessiond / ust-app.h
1 /*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License, version 2 only,
6 * as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 */
17
18 #ifndef _LTT_UST_APP_H
19 #define _LTT_UST_APP_H
20
21 #include <stdint.h>
22
23 #include "trace-ust.h"
24
25 /* lttng-ust supported version. */
26 #define LTTNG_UST_COMM_MAJOR 2 /* comm protocol major version */
27 #define UST_APP_MAJOR_VERSION 3 /* Internal UST version supported */
28
29 #define UST_APP_EVENT_LIST_SIZE 32
30
31 struct lttng_filter_bytecode;
32 struct lttng_ust_filter_bytecode;
33
34 extern int ust_consumerd64_fd, ust_consumerd32_fd;
35
36 /*
37 * Application registration data structure.
38 */
39 struct ust_register_msg {
40 uint32_t major;
41 uint32_t minor;
42 pid_t pid;
43 pid_t ppid;
44 uid_t uid;
45 gid_t gid;
46 uint32_t bits_per_long;
47 char name[16];
48 };
49
50 /*
51 * Global applications HT used by the session daemon. This table is indexed by
52 * PID using the pid_n node and pid value of an ust_app.
53 */
54 struct lttng_ht *ust_app_ht;
55
56 /*
57 * Global applications HT used by the session daemon. This table is indexed by
58 * socket using the sock_n node and sock value of an ust_app.
59 */
60 struct lttng_ht *ust_app_ht_by_sock;
61
62 struct ust_app_ctx {
63 int handle;
64 struct lttng_ust_context ctx;
65 struct lttng_ust_object_data *obj;
66 struct lttng_ht_node_ulong node;
67 };
68
69 struct ust_app_event {
70 int enabled;
71 int handle;
72 struct lttng_ust_object_data *obj;
73 struct lttng_ust_event attr;
74 char name[LTTNG_UST_SYM_NAME_LEN];
75 struct lttng_ht_node_str node;
76 struct lttng_ust_filter_bytecode *filter;
77 };
78
79 struct ust_app_channel {
80 int enabled;
81 int handle;
82 char name[LTTNG_UST_SYM_NAME_LEN];
83 struct lttng_ust_channel attr;
84 struct lttng_ust_object_data *obj;
85 struct ltt_ust_stream_list streams;
86 struct lttng_ht *ctx;
87 struct lttng_ht *events;
88 struct lttng_ht_node_str node;
89 };
90
91 struct ust_app_session {
92 int enabled;
93 /* started: has the session been in started state at any time ? */
94 int started; /* allows detection of start vs restart. */
95 int handle; /* used has unique identifier for app session */
96 int id; /* session unique identifier */
97 struct ltt_ust_metadata *metadata;
98 struct lttng_ht *channels; /* Registered channels */
99 struct lttng_ht_node_ulong node;
100 char path[PATH_MAX];
101 /* UID/GID of the user owning the session */
102 uid_t uid;
103 gid_t gid;
104 };
105
106 /*
107 * Registered traceable applications. Libust registers to the session daemon
108 * and a linked list is kept of all running traceable app.
109 */
110 struct ust_app {
111 int sock;
112 pid_t pid;
113 pid_t ppid;
114 uid_t uid; /* User ID that owns the apps */
115 gid_t gid; /* Group ID that owns the apps */
116 int bits_per_long;
117 int compatible; /* If the lttng-ust tracer version does not match the
118 supported version of the session daemon, this flag is
119 set to 0 (NOT compatible) else 1. */
120 struct lttng_ust_tracer_version version;
121 uint32_t v_major; /* Verion major number */
122 uint32_t v_minor; /* Verion minor number */
123 char name[17]; /* Process name (short) */
124 struct lttng_ht *sessions;
125 struct lttng_ht_node_ulong pid_n;
126 struct lttng_ht_node_ulong sock_n;
127 };
128
129 #ifdef HAVE_LIBLTTNG_UST_CTL
130
131 int ust_app_register(struct ust_register_msg *msg, int sock);
132 static inline
133 int ust_app_register_done(int sock)
134 {
135 return ustctl_register_done(sock);
136 }
137 void ust_app_unregister(int sock);
138 unsigned long ust_app_list_count(void);
139 int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
140 int ust_app_stop_trace(struct ltt_ust_session *usess, struct ust_app *app);
141 int ust_app_start_trace_all(struct ltt_ust_session *usess);
142 int ust_app_stop_trace_all(struct ltt_ust_session *usess);
143 int ust_app_destroy_trace(struct ltt_ust_session *usess, struct ust_app *app);
144 int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
145 int ust_app_list_events(struct lttng_event **events);
146 int ust_app_list_event_fields(struct lttng_event_field **fields);
147 int ust_app_create_channel_glb(struct ltt_ust_session *usess,
148 struct ltt_ust_channel *uchan);
149 int ust_app_create_event_glb(struct ltt_ust_session *usess,
150 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
151 int ust_app_disable_event_pid(struct ltt_ust_session *usess,
152 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
153 pid_t pid);
154 int ust_app_enable_event_pid(struct ltt_ust_session *usess,
155 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
156 pid_t pid);
157 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
158 struct ltt_ust_channel *uchan);
159 int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
160 struct ltt_ust_channel *uchan);
161 int ust_app_enable_event_glb(struct ltt_ust_session *usess,
162 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
163 int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
164 struct ltt_ust_channel *uchan);
165 int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
166 struct ltt_ust_channel *uchan);
167 int ust_app_disable_event_glb(struct ltt_ust_session *usess,
168 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
169 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
170 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx);
171 int ust_app_set_filter_event_glb(struct ltt_ust_session *usess,
172 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
173 struct lttng_filter_bytecode *bytecode);
174 void ust_app_global_update(struct ltt_ust_session *usess, int sock);
175
176 void ust_app_clean_list(void);
177 void ust_app_ht_alloc(void);
178 struct lttng_ht *ust_app_get_ht(void);
179 struct ust_app *ust_app_find_by_pid(pid_t pid);
180 int ust_app_validate_version(int sock);
181 int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate);
182
183 #else /* HAVE_LIBLTTNG_UST_CTL */
184
185 static inline
186 int ust_app_destroy_trace_all(struct ltt_ust_session *usess)
187 {
188 return 0;
189 }
190 static inline
191 int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
192 {
193 return 0;
194 }
195 static inline
196 int ust_app_start_trace_all(struct ltt_ust_session *usess)
197 {
198 return 0;
199 }
200 static inline
201 int ust_app_stop_trace_all(struct ltt_ust_session *usess)
202 {
203 return 0;
204 }
205 static inline
206 int ust_app_list_events(struct lttng_event **events)
207 {
208 return -ENOSYS;
209 }
210 static inline
211 int ust_app_list_event_fields(struct lttng_event_field **fields)
212 {
213 return -ENOSYS;
214 }
215 static inline
216 int ust_app_register(struct ust_register_msg *msg, int sock)
217 {
218 return -ENOSYS;
219 }
220 static inline
221 int ust_app_register_done(int sock)
222 {
223 return -ENOSYS;
224 }
225 static inline
226 void ust_app_unregister(int sock)
227 {
228 }
229 static inline
230 unsigned int ust_app_list_count(void)
231 {
232 return 0;
233 }
234 static inline
235 void ust_app_lock_list(void)
236 {
237 }
238 static inline
239 void ust_app_unlock_list(void)
240 {
241 }
242 static inline
243 void ust_app_clean_list(void)
244 {
245 }
246 static inline
247 struct ust_app_list *ust_app_get_list(void)
248 {
249 return NULL;
250 }
251 static inline
252 struct ust_app *ust_app_get_by_pid(pid_t pid)
253 {
254 return NULL;
255 }
256 static inline
257 struct lttng_ht *ust_app_get_ht(void)
258 {
259 return NULL;
260 }
261 static inline
262 void ust_app_ht_alloc(void)
263 {}
264 static inline
265 void ust_app_global_update(struct ltt_ust_session *usess, int sock)
266 {}
267 static inline
268 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
269 struct ltt_ust_channel *uchan)
270 {
271 return 0;
272 }
273 static inline
274 int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
275 struct ltt_ust_channel *uchan)
276 {
277 return 0;
278 }
279 static inline
280 int ust_app_create_channel_glb(struct ltt_ust_session *usess,
281 struct ltt_ust_channel *uchan)
282 {
283 return 0;
284 }
285 static inline
286 int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
287 struct ltt_ust_channel *uchan)
288 {
289 return 0;
290 }
291 static inline
292 int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
293 struct ltt_ust_channel *uchan)
294 {
295 return 0;
296 }
297 static inline
298 int ust_app_create_event_glb(struct ltt_ust_session *usess,
299 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
300 {
301 return 0;
302 }
303 static inline
304 int ust_app_disable_event_glb(struct ltt_ust_session *usess,
305 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
306 {
307 return 0;
308 }
309 static inline
310 int ust_app_enable_event_glb(struct ltt_ust_session *usess,
311 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
312 {
313 return 0;
314 }
315 static inline
316 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
317 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx)
318 {
319 return 0;
320 }
321 static inline
322 int ust_app_enable_event_pid(struct ltt_ust_session *usess,
323 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
324 pid_t pid)
325 {
326 return 0;
327 }
328 static inline
329 int ust_app_disable_event_pid(struct ltt_ust_session *usess,
330 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
331 pid_t pid)
332 {
333 return 0;
334 }
335 static inline
336 int ust_app_validate_version(int sock)
337 {
338 return 0;
339 }
340 static inline
341 int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate)
342 {
343 return 0;
344 }
345 static inline
346 int ust_app_set_filter_event_glb(struct ltt_ust_session *usess,
347 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
348 struct lttng_filter_bytecode *bytecode)
349 {
350 return 0;
351 }
352
353 #endif /* HAVE_LIBLTTNG_UST_CTL */
354
355 #endif /* _LTT_UST_APP_H */
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