d7fbcd5d0ee4378355e0b5492fe894e3e252c7aa
[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
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
24 #include "trace-ust.h"
25
26 #define UST_APP_EVENT_LIST_SIZE 32
27
28 extern int ust_consumerd64_fd, ust_consumerd32_fd;
29
30 /*
31 * Application registration data structure.
32 */
33 struct ust_register_msg {
34 uint32_t major;
35 uint32_t minor;
36 pid_t pid;
37 pid_t ppid;
38 uid_t uid;
39 gid_t gid;
40 uint32_t bits_per_long;
41 char name[16];
42 };
43
44 /*
45 * Global applications HT used by the session daemon.
46 */
47 struct lttng_ht *ust_app_ht;
48
49 struct lttng_ht *ust_app_sock_key_map;
50
51 struct ust_app_key {
52 pid_t pid;
53 int sock;
54 struct lttng_ht_node_ulong node;
55 };
56
57 struct ust_app_ctx {
58 int handle;
59 struct lttng_ust_context ctx;
60 struct lttng_ust_object_data *obj;
61 struct lttng_ht_node_ulong node;
62 };
63
64 struct ust_app_event {
65 int enabled;
66 int handle;
67 struct lttng_ust_object_data *obj;
68 struct lttng_ust_event attr;
69 char name[LTTNG_UST_SYM_NAME_LEN];
70 struct lttng_ht *ctx;
71 struct lttng_ht_node_str node;
72 };
73
74 struct ust_app_channel {
75 int enabled;
76 int handle;
77 char name[LTTNG_UST_SYM_NAME_LEN];
78 struct lttng_ust_channel attr;
79 struct lttng_ust_object_data *obj;
80 struct ltt_ust_stream_list streams;
81 struct lttng_ht *ctx;
82 struct lttng_ht *events;
83 struct lttng_ht_node_str node;
84 };
85
86 struct ust_app_session {
87 int enabled;
88 /* started: has the session been in started state at any time ? */
89 int started; /* allows detection of start vs restart. */
90 int handle; /* used has unique identifier for app session */
91 int id; /* session unique identifier */
92 struct ltt_ust_metadata *metadata;
93 struct lttng_ht *channels; /* Registered channels */
94 struct lttng_ht_node_ulong node;
95 char path[PATH_MAX];
96 /* UID/GID of the user owning the session */
97 uid_t uid;
98 gid_t gid;
99 };
100
101 /*
102 * Registered traceable applications. Libust registers to the session daemon
103 * and a linked list is kept of all running traceable app.
104 */
105 struct ust_app {
106 pid_t ppid;
107 uid_t uid; /* User ID that owns the apps */
108 gid_t gid; /* Group ID that owns the apps */
109 int bits_per_long;
110 uint32_t v_major; /* Verion major number */
111 uint32_t v_minor; /* Verion minor number */
112 char name[17]; /* Process name (short) */
113 struct lttng_ht *sessions;
114 struct lttng_ht_node_ulong node;
115 struct ust_app_key key;
116 };
117
118 #ifdef HAVE_LIBLTTNG_UST_CTL
119
120 int ust_app_register(struct ust_register_msg *msg, int sock);
121 static inline
122 int ust_app_register_done(int sock)
123 {
124 return ustctl_register_done(sock);
125 }
126 void ust_app_unregister(int sock);
127 unsigned long ust_app_list_count(void);
128 int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
129 int ust_app_stop_trace(struct ltt_ust_session *usess, struct ust_app *app);
130 int ust_app_start_trace_all(struct ltt_ust_session *usess);
131 int ust_app_stop_trace_all(struct ltt_ust_session *usess);
132 int ust_app_destroy_trace(struct ltt_ust_session *usess, struct ust_app *app);
133 int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
134 int ust_app_list_events(struct lttng_event **events);
135 int ust_app_create_channel_glb(struct ltt_ust_session *usess,
136 struct ltt_ust_channel *uchan);
137 int ust_app_create_event_glb(struct ltt_ust_session *usess,
138 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
139 int ust_app_disable_event_pid(struct ltt_ust_session *usess,
140 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
141 pid_t pid);
142 int ust_app_enable_event_pid(struct ltt_ust_session *usess,
143 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
144 pid_t pid);
145 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
146 struct ltt_ust_channel *uchan);
147 int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
148 struct ltt_ust_channel *uchan);
149 int ust_app_enable_event_glb(struct ltt_ust_session *usess,
150 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
151 int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
152 struct ltt_ust_channel *uchan);
153 int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
154 struct ltt_ust_channel *uchan);
155 int ust_app_disable_event_glb(struct ltt_ust_session *usess,
156 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
157 int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess,
158 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
159 struct ltt_ust_context *uctx);
160 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
161 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx);
162 void ust_app_global_update(struct ltt_ust_session *usess, int sock);
163
164 void ust_app_clean_list(void);
165 void ust_app_ht_alloc(void);
166 struct lttng_ht *ust_app_get_ht(void);
167 struct ust_app *ust_app_find_by_pid(pid_t pid);
168
169 #else /* HAVE_LIBLTTNG_UST_CTL */
170
171 static inline
172 int ust_app_destroy_trace_all(struct ltt_ust_session *usess)
173 {
174 return 0;
175 }
176 static inline
177 int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
178 {
179 return 0;
180 }
181 static inline
182 int ust_app_start_trace_all(struct ltt_ust_session *usess)
183 {
184 return 0;
185 }
186 static inline
187 int ust_app_stop_trace_all(struct ltt_ust_session *usess)
188 {
189 return 0;
190 }
191 static inline
192 int ust_app_list_events(struct lttng_event **events)
193 {
194 return 0;
195 }
196 static inline
197 int ust_app_register(struct ust_register_msg *msg, int sock)
198 {
199 return -ENOSYS;
200 }
201 static inline
202 int ust_app_register_done(int sock)
203 {
204 return -ENOSYS;
205 }
206 static inline
207 void ust_app_unregister(int sock)
208 {
209 }
210 static inline
211 unsigned int ust_app_list_count(void)
212 {
213 return 0;
214 }
215 static inline
216 void ust_app_lock_list(void)
217 {
218 }
219 static inline
220 void ust_app_unlock_list(void)
221 {
222 }
223 static inline
224 void ust_app_clean_list(void)
225 {
226 }
227 static inline
228 struct ust_app_list *ust_app_get_list(void)
229 {
230 return NULL;
231 }
232 static inline
233 struct ust_app *ust_app_get_by_pid(pid_t pid)
234 {
235 return NULL;
236 }
237 static inline
238 struct lttng_ht *ust_app_get_ht(void)
239 {
240 return NULL;
241 }
242 static inline
243 void ust_app_ht_alloc(void)
244 {}
245 static inline
246 void ust_app_global_update(struct ltt_ust_session *usess, int sock)
247 {}
248 static inline
249 int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
250 struct ltt_ust_channel *uchan)
251 {
252 return 0;
253 }
254 static inline
255 int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
256 struct ltt_ust_channel *uchan)
257 {
258 return 0;
259 }
260 static inline
261 int ust_app_create_channel_glb(struct ltt_ust_session *usess,
262 struct ltt_ust_channel *uchan)
263 {
264 return 0;
265 }
266 static inline
267 int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
268 struct ltt_ust_channel *uchan)
269 {
270 return 0;
271 }
272 static inline
273 int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
274 struct ltt_ust_channel *uchan)
275 {
276 return 0;
277 }
278 static inline
279 int ust_app_create_event_glb(struct ltt_ust_session *usess,
280 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
281 {
282 return 0;
283 }
284 static inline
285 int ust_app_disable_event_glb(struct ltt_ust_session *usess,
286 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
287 {
288 return 0;
289 }
290 static inline
291 int ust_app_enable_event_glb(struct ltt_ust_session *usess,
292 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
293 {
294 return 0;
295 }
296 static inline
297 int ust_app_add_ctx_event_glb(struct ltt_ust_session *usess,
298 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
299 struct ltt_ust_context *uctx)
300 {
301 return 0;
302 }
303 static inline
304 int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
305 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx)
306 {
307 return 0;
308 }
309 static inline
310 int ust_app_enable_event_pid(struct ltt_ust_session *usess,
311 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
312 pid_t pid)
313 {
314 return 0;
315 }
316 static inline
317 int ust_app_disable_event_pid(struct ltt_ust_session *usess,
318 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
319 pid_t pid)
320 {
321 return 0;
322 }
323
324 #endif /* HAVE_LIBLTTNG_UST_CTL */
325
326 #endif /* _LTT_UST_APP_H */
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