8cc049aefb9b12ad4c9b0146a8a739120823337d
[lttng-tools.git] / 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
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; only version 2
7 * of the License.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19 #ifndef _LTT_UST_APP_H
20 #define _LTT_UST_APP_H
21
22 #include <stdint.h>
23 #include <urcu/list.h>
24
25 #include "trace-ust.h"
26
27 #define UST_APP_EVENT_LIST_SIZE 32
28
29 extern int ust_consumerd64_fd, ust_consumerd32_fd;
30
31 /*
32 * Application registration data structure.
33 */
34 struct ust_register_msg {
35 uint32_t major;
36 uint32_t minor;
37 pid_t pid;
38 pid_t ppid;
39 uid_t uid;
40 gid_t gid;
41 uint32_t bits_per_long;
42 char name[16];
43 };
44
45 /*
46 * Global applications HT used by the session daemon.
47 */
48 struct lttng_ht *ust_app_ht;
49
50 struct lttng_ht *ust_app_sock_key_map;
51
52 struct ust_app_key {
53 pid_t pid;
54 int sock;
55 struct lttng_ht_node_ulong node;
56 };
57
58 struct ust_app_ctx {
59 int handle;
60 struct lttng_ust_context ctx;
61 struct lttng_ust_object_data *obj;
62 struct lttng_ht_node_ulong node;
63 };
64
65 struct ust_app_event {
66 int enabled;
67 int handle;
68 struct lttng_ust_object_data *obj;
69 struct lttng_ust_event attr;
70 char name[LTTNG_UST_SYM_NAME_LEN];
71 struct lttng_ht *ctx;
72 struct lttng_ht_node_str node;
73 };
74
75 struct ust_app_channel {
76 int enabled;
77 int handle;
78 char name[LTTNG_UST_SYM_NAME_LEN];
79 struct lttng_ust_channel attr;
80 struct lttng_ust_object_data *obj;
81 struct ltt_ust_stream_list streams;
82 struct lttng_ht *ctx;
83 struct lttng_ht *events;
84 struct lttng_ht_node_str node;
85 };
86
87 struct ust_app_session {
88 int enabled;
89 /* started: has the session been in started state at any time ? */
90 int started; /* allows detection of start vs restart. */
91 int handle; /* used has unique identifier for app session */
92 int id; /* session unique identifier */
93 struct ltt_ust_metadata *metadata;
94 struct lttng_ht *channels; /* Registered channels */
95 struct lttng_ht_node_ulong node;
96 char path[PATH_MAX];
97 /* UID/GID of the user owning the session */
98 uid_t uid;
99 gid_t gid;
100 };
101
102 /*
103 * Registered traceable applications. Libust registers to the session daemon
104 * and a linked list is kept of all running traceable app.
105 */
106 struct ust_app {
107 pid_t ppid;
108 uid_t uid; /* User ID that owns the apps */
109 gid_t gid; /* Group ID that owns the apps */
110 int bits_per_long;
111 uint32_t v_major; /* Verion major number */
112 uint32_t v_minor; /* Verion minor number */
113 char name[17]; /* Process name (short) */
114 struct lttng_ht *sessions;
115 struct lttng_ht_node_ulong node;
116 struct ust_app_key key;
117 };
118
119 #ifdef HAVE_LIBLTTNG_UST_CTL
120
121 int ust_app_register(struct ust_register_msg *msg, int sock);
122 void ust_app_unregister(int sock);
123 unsigned long ust_app_list_count(void);
124 int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
125 int ust_app_stop_trace(struct ltt_ust_session *usess, struct ust_app *app);
126 int ust_app_start_trace_all(struct ltt_ust_session *usess);
127 int ust_app_stop_trace_all(struct ltt_ust_session *usess);
128 int ust_app_destroy_trace(struct ltt_ust_session *usess, struct ust_app *app);
129 int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
130 int ust_app_list_events(struct lttng_event **events);
131 int ust_app_create_channel_glb(struct ltt_ust_session *usess,
132 struct ltt_ust_channel *uchan);
133 int ust_app_create_event_glb(struct ltt_ust_session *usess,
134 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
135 int ust_app_disable_event_pid(struct ltt_ust_session *usess,
136 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
137 pid_t pid);
138 int ust_app_enable_event_pid(struct ltt_ust_session *usess,
139 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
140 pid_t pid);
141 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
142 struct ltt_ust_channel *uchan);
143 int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
144 struct ltt_ust_channel *uchan);
145 int ust_app_enable_event_glb(struct ltt_ust_session *usess,
146 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
147 int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
148 struct ltt_ust_channel *uchan);
149 int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
150 struct ltt_ust_channel *uchan);
151 int ust_app_disable_event_glb(struct ltt_ust_session *usess,
152 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
153 int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess,
154 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
155 struct ltt_ust_context *uctx);
156 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
157 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx);
158 void ust_app_global_update(struct ltt_ust_session *usess, int sock);
159
160 void ust_app_clean_list(void);
161 void ust_app_ht_alloc(void);
162 struct lttng_ht *ust_app_get_ht(void);
163 struct ust_app *ust_app_find_by_pid(pid_t pid);
164
165 #else /* HAVE_LIBLTTNG_UST_CTL */
166
167 static inline
168 int ust_app_destroy_trace_all(struct ltt_ust_session *usess)
169 {
170 return 0;
171 }
172 static inline
173 int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
174 {
175 return 0;
176 }
177 static inline
178 int ust_app_start_trace_all(struct ltt_ust_session *usess)
179 {
180 return 0;
181 }
182 static inline
183 int ust_app_stop_trace_all(struct ltt_ust_session *usess)
184 {
185 return 0;
186 }
187 static inline
188 int ust_app_list_events(struct lttng_event **events)
189 {
190 return 0;
191 }
192 static inline
193 int ust_app_register(struct ust_register_msg *msg, int sock)
194 {
195 return -ENOSYS;
196 }
197 static inline
198 void ust_app_unregister(int sock)
199 {
200 }
201 static inline
202 unsigned int ust_app_list_count(void)
203 {
204 return 0;
205 }
206 static inline
207 void ust_app_lock_list(void)
208 {
209 }
210 static inline
211 void ust_app_unlock_list(void)
212 {
213 }
214 static inline
215 void ust_app_clean_list(void)
216 {
217 }
218 static inline
219 struct ust_app_list *ust_app_get_list(void)
220 {
221 return NULL;
222 }
223 static inline
224 struct ust_app *ust_app_get_by_pid(pid_t pid)
225 {
226 return NULL;
227 }
228 static inline
229 struct lttng_ht *ust_app_get_ht(void)
230 {
231 return NULL;
232 }
233 static inline
234 void ust_app_ht_alloc(void)
235 {}
236 static inline
237 void ust_app_global_update(struct ltt_ust_session *usess, int sock)
238 {}
239 static inline
240 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
241 struct ltt_ust_channel *uchan)
242 {
243 return 0;
244 }
245 static inline
246 int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
247 struct ltt_ust_channel *uchan)
248 {
249 return 0;
250 }
251 static inline
252 int ust_app_create_channel_glb(struct ltt_ust_session *usess,
253 struct ltt_ust_channel *uchan)
254 {
255 return 0;
256 }
257 static inline
258 int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
259 struct ltt_ust_channel *uchan)
260 {
261 return 0;
262 }
263 static inline
264 int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
265 struct ltt_ust_channel *uchan)
266 {
267 return 0;
268 }
269 static inline
270 int ust_app_create_event_glb(struct ltt_ust_session *usess,
271 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
272 {
273 return 0;
274 }
275 static inline
276 int ust_app_disable_event_glb(struct ltt_ust_session *usess,
277 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
278 {
279 return 0;
280 }
281 static inline
282 int ust_app_enable_event_glb(struct ltt_ust_session *usess,
283 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
284 {
285 return 0;
286 }
287 static inline
288 int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess,
289 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
290 struct ltt_ust_context *uctx)
291 {
292 return 0;
293 }
294 static inline
295 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
296 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx)
297 {
298 return 0;
299 }
300 static inline
301 int ust_app_enable_event_pid(struct ltt_ust_session *usess,
302 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
303 pid_t pid)
304 {
305 return 0;
306 }
307 static inline
308 int ust_app_disable_event_pid(struct ltt_ust_session *usess,
309 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
310 pid_t pid)
311 {
312 return 0;
313 }
314
315 #endif /* HAVE_LIBLTTNG_UST_CTL */
316
317 #endif /* _LTT_UST_APP_H */
This page took 0.05317 seconds and 4 git commands to generate.