Move stream name creation to fct create_ust_stream
[lttng-tools.git] / src / bin / lttng-sessiond / ust-app.h
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1/*
2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
3 *
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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.
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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 *
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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.
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16 */
17
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18#ifndef _LTT_UST_APP_H
19#define _LTT_UST_APP_H
91d76f53 20
099e26bd 21#include <stdint.h>
1e307fab 22
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23#include "trace-ust.h"
24
e0c7ec2b 25/* lttng-ust supported version. */
3f2c5fcc 26#define LTTNG_UST_COMM_MAJOR 2 /* comm protocol major version */
68264071 27#define UST_APP_MAJOR_VERSION 3 /* Internal UST version supported */
e0c7ec2b 28
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29#define UST_APP_EVENT_LIST_SIZE 32
30
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31struct lttng_filter_bytecode;
32struct lttng_ust_filter_bytecode;
33
7753dea8 34extern int ust_consumerd64_fd, ust_consumerd32_fd;
ba5d816e 35
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36struct ust_app_ht_key {
37 const char *name;
38 const struct lttng_ust_filter_bytecode *filter;
39 enum lttng_ust_loglevel_type loglevel;
40};
41
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42/*
43 * Application registration data structure.
44 */
45struct ust_register_msg {
46 uint32_t major;
47 uint32_t minor;
48 pid_t pid;
49 pid_t ppid;
50 uid_t uid;
51 gid_t gid;
0df502fd 52 uint32_t bits_per_long;
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53 char name[16];
54};
55
48842b30 56/*
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57 * Global applications HT used by the session daemon. This table is indexed by
58 * PID using the pid_n node and pid value of an ust_app.
48842b30 59 */
bec39940 60struct lttng_ht *ust_app_ht;
f6a9efaa 61
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62/*
63 * Global applications HT used by the session daemon. This table is indexed by
64 * socket using the sock_n node and sock value of an ust_app.
65 */
66struct lttng_ht *ust_app_ht_by_sock;
91d76f53 67
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68struct ust_app_ctx {
69 int handle;
70 struct lttng_ust_context ctx;
71 struct lttng_ust_object_data *obj;
bec39940 72 struct lttng_ht_node_ulong node;
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73};
74
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75struct ust_app_event {
76 int enabled;
77 int handle;
13161846 78 struct lttng_ust_object_data *obj;
284d8f55 79 struct lttng_ust_event attr;
48842b30 80 char name[LTTNG_UST_SYM_NAME_LEN];
bec39940 81 struct lttng_ht_node_str node;
53a80697 82 struct lttng_ust_filter_bytecode *filter;
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83};
84
85struct ust_app_channel {
86 int enabled;
87 int handle;
88 char name[LTTNG_UST_SYM_NAME_LEN];
89 struct lttng_ust_channel attr;
13161846 90 struct lttng_ust_object_data *obj;
5af2f756 91 struct ltt_ust_stream_list streams;
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92 struct lttng_ht *ctx;
93 struct lttng_ht *events;
94 struct lttng_ht_node_str node;
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95};
96
97struct ust_app_session {
98 int enabled;
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99 /* started: has the session been in started state at any time ? */
100 int started; /* allows detection of start vs restart. */
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101 int handle; /* used has unique identifier for app session */
102 int id; /* session unique identifier */
48842b30 103 struct ltt_ust_metadata *metadata;
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104 struct lttng_ht *channels; /* Registered channels */
105 struct lttng_ht_node_ulong node;
106 char path[PATH_MAX];
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107 /* UID/GID of the user owning the session */
108 uid_t uid;
109 gid_t gid;
d42f20df 110 struct cds_list_head teardown_node;
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111};
112
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113/*
114 * Registered traceable applications. Libust registers to the session daemon
050349bb 115 * and a linked list is kept of all running traceable app.
91d76f53 116 */
56fff090 117struct ust_app {
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118 int sock;
119 pid_t pid;
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120 pid_t ppid;
121 uid_t uid; /* User ID that owns the apps */
aea829b3 122 gid_t gid; /* Group ID that owns the apps */
7753dea8 123 int bits_per_long;
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124 int compatible; /* If the lttng-ust tracer version does not match the
125 supported version of the session daemon, this flag is
126 set to 0 (NOT compatible) else 1. */
127 struct lttng_ust_tracer_version version;
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128 uint32_t v_major; /* Verion major number */
129 uint32_t v_minor; /* Verion minor number */
130 char name[17]; /* Process name (short) */
bec39940 131 struct lttng_ht *sessions;
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132 struct lttng_ht_node_ulong pid_n;
133 struct lttng_ht_node_ulong sock_n;
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134 /*
135 * This is a list of ust app session that, once the app is going into
136 * teardown mode, in the RCU call, each node in this list is removed and
137 * deleted.
138 *
139 * Element of the list are added when an application unregisters after each
140 * ht_del of ust_app_session associated to this app. This list is NOT used
141 * when a session is destroyed.
142 */
143 struct cds_list_head teardown_head;
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144};
145
74d0b642 146#ifdef HAVE_LIBLTTNG_UST_CTL
3bd1e081 147
56fff090 148int ust_app_register(struct ust_register_msg *msg, int sock);
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149static inline
150int ust_app_register_done(int sock)
151{
152 return ustctl_register_done(sock);
153}
56fff090 154void ust_app_unregister(int sock);
f6a9efaa 155unsigned long ust_app_list_count(void);
421cb601 156int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
8be98f9a 157int ust_app_stop_trace(struct ltt_ust_session *usess, struct ust_app *app);
421cb601 158int ust_app_start_trace_all(struct ltt_ust_session *usess);
8be98f9a 159int ust_app_stop_trace_all(struct ltt_ust_session *usess);
84cd17c6 160int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
b551a063 161int ust_app_list_events(struct lttng_event **events);
f37d259d 162int ust_app_list_event_fields(struct lttng_event_field **fields);
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163int ust_app_create_channel_glb(struct ltt_ust_session *usess,
164 struct ltt_ust_channel *uchan);
165int ust_app_create_event_glb(struct ltt_ust_session *usess,
166 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
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167int ust_app_disable_event_pid(struct ltt_ust_session *usess,
168 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
169 pid_t pid);
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170int ust_app_enable_event_pid(struct ltt_ust_session *usess,
171 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
172 pid_t pid);
35a9059d 173int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
78f0bacd 174 struct ltt_ust_channel *uchan);
35a9059d 175int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
78f0bacd 176 struct ltt_ust_channel *uchan);
35a9059d 177int ust_app_enable_event_glb(struct ltt_ust_session *usess,
edb67388 178 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
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179int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
180 struct ltt_ust_channel *uchan);
181int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
9730260e 182 struct ltt_ust_channel *uchan);
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183int ust_app_disable_event_glb(struct ltt_ust_session *usess,
184 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
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185int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
186 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx);
487cf67c 187void ust_app_global_update(struct ltt_ust_session *usess, int sock);
91d76f53 188
56fff090 189void ust_app_clean_list(void);
f6a9efaa 190void ust_app_ht_alloc(void);
bec39940 191struct lttng_ht *ust_app_get_ht(void);
f6a9efaa 192struct ust_app *ust_app_find_by_pid(pid_t pid);
e0c7ec2b 193int ust_app_validate_version(int sock);
4466912f 194int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate);
44d3bd01 195
74d0b642 196#else /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 197
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198static inline
199int ust_app_destroy_trace_all(struct ltt_ust_session *usess)
200{
201 return 0;
202}
d974f197 203static inline
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204int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
205{
206 return 0;
207}
208static inline
209int ust_app_start_trace_all(struct ltt_ust_session *usess)
d974f197 210{
5cf5d0e7 211 return 0;
d974f197 212}
3bd1e081 213static inline
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214int ust_app_stop_trace_all(struct ltt_ust_session *usess)
215{
216 return 0;
217}
218static inline
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219int ust_app_list_events(struct lttng_event **events)
220{
db7c0497 221 return -ENOSYS;
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222}
223static inline
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224int ust_app_list_event_fields(struct lttng_event_field **fields)
225{
226 return -ENOSYS;
227}
228static inline
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229int ust_app_register(struct ust_register_msg *msg, int sock)
230{
231 return -ENOSYS;
232}
233static inline
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234int ust_app_register_done(int sock)
235{
236 return -ENOSYS;
237}
238static inline
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239void ust_app_unregister(int sock)
240{
241}
242static inline
243unsigned int ust_app_list_count(void)
244{
245 return 0;
246}
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247static inline
248void ust_app_lock_list(void)
249{
250}
251static inline
252void ust_app_unlock_list(void)
253{
254}
255static inline
256void ust_app_clean_list(void)
257{
258}
259static inline
260struct ust_app_list *ust_app_get_list(void)
261{
262 return NULL;
263}
264static inline
265struct ust_app *ust_app_get_by_pid(pid_t pid)
266{
267 return NULL;
268}
48842b30 269static inline
bec39940 270struct lttng_ht *ust_app_get_ht(void)
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271{
272 return NULL;
273}
274static inline
275void ust_app_ht_alloc(void)
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276{}
277static inline
278void ust_app_global_update(struct ltt_ust_session *usess, int sock)
279{}
280static inline
35a9059d 281int ust_app_disable_channel_glb(struct ltt_ust_session *usess,
cc920def 282 struct ltt_ust_channel *uchan)
d974f197 283{
cc920def 284 return 0;
d974f197 285}
487cf67c 286static inline
35a9059d 287int ust_app_enable_channel_glb(struct ltt_ust_session *usess,
cc920def 288 struct ltt_ust_channel *uchan)
487cf67c 289{
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290 return 0;
291}
292static inline
35a9059d 293int ust_app_create_channel_glb(struct ltt_ust_session *usess,
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294 struct ltt_ust_channel *uchan)
295{
296 return 0;
297}
298static inline
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299int ust_app_disable_all_event_glb(struct ltt_ust_session *usess,
300 struct ltt_ust_channel *uchan)
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301{
302 return 0;
303}
304static inline
35a9059d 305int ust_app_enable_all_event_glb(struct ltt_ust_session *usess,
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306 struct ltt_ust_channel *uchan)
307{
308 return 0;
309}
310static inline
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311int ust_app_create_event_glb(struct ltt_ust_session *usess,
312 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
313{
314 return 0;
315}
316static inline
317int ust_app_disable_event_glb(struct ltt_ust_session *usess,
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318 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
319{
320 return 0;
487cf67c 321}
edb67388 322static inline
35a9059d 323int ust_app_enable_event_glb(struct ltt_ust_session *usess,
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324 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
325{
326 return 0;
327}
55cc08a6 328static inline
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329int ust_app_add_ctx_channel_glb(struct ltt_ust_session *usess,
330 struct ltt_ust_channel *uchan, struct ltt_ust_context *uctx)
331{
332 return 0;
333}
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334static inline
335int ust_app_enable_event_pid(struct ltt_ust_session *usess,
336 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
337 pid_t pid)
338{
339 return 0;
340}
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341static inline
342int ust_app_disable_event_pid(struct ltt_ust_session *usess,
343 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
344 pid_t pid)
345{
346 return 0;
347}
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348static inline
349int ust_app_validate_version(int sock)
350{
351 return 0;
352}
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353static inline
354int ust_app_calibrate_glb(struct lttng_ust_calibrate *calibrate)
355{
356 return 0;
357}
48842b30 358
74d0b642 359#endif /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 360
f6a9efaa 361#endif /* _LTT_UST_APP_H */
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