Add UST event not found error code
[lttng-tools.git] / lttng-sessiond / ust-app.h
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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
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6 * as published by the Free Software Foundation; only version 2
7 * of the License.
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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
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19#ifndef _LTT_UST_APP_H
20#define _LTT_UST_APP_H
91d76f53 21
099e26bd 22#include <stdint.h>
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23#include <urcu/list.h>
24
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25#include "trace-ust.h"
26
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27#define UST_APP_EVENT_LIST_SIZE 32
28
7753dea8 29extern int ust_consumerd64_fd, ust_consumerd32_fd;
ba5d816e 30
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31/*
32 * Application registration data structure.
33 */
34struct 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;
0df502fd 41 uint32_t bits_per_long;
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42 char name[16];
43};
44
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45/*
46 * Global applications HT used by the session daemon.
47 */
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48struct cds_lfht *ust_app_ht;
49
50struct cds_lfht *ust_app_sock_key_map;
51
52struct ust_app_key {
53 pid_t pid;
54 int sock;
55 struct cds_lfht_node node;
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56};
57
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58struct ust_app_event {
59 int enabled;
60 int handle;
13161846 61 struct lttng_ust_object_data *obj;
284d8f55 62 struct lttng_ust_event attr;
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63 char name[LTTNG_UST_SYM_NAME_LEN];
64 struct cds_lfht *ctx;
65 struct cds_lfht_node node;
66};
67
68struct ust_app_channel {
69 int enabled;
70 int handle;
71 char name[LTTNG_UST_SYM_NAME_LEN];
72 struct lttng_ust_channel attr;
13161846 73 struct lttng_ust_object_data *obj;
5af2f756 74 struct ltt_ust_stream_list streams;
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75 struct cds_lfht *ctx;
76 struct cds_lfht *events;
77 struct cds_lfht_node node;
78};
79
80struct ust_app_session {
81 int enabled;
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82 /* started: has the session been in started state at any time ? */
83 int started; /* allows detection of start vs restart. */
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84 int handle; /* Used has unique identifier */
85 unsigned int uid;
86 struct ltt_ust_metadata *metadata;
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87 struct cds_lfht *channels; /* Registered channels */
88 struct cds_lfht_node node;
477d7741 89 char path[PATH_MAX];
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90};
91
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92/*
93 * Registered traceable applications. Libust registers to the session daemon
050349bb 94 * and a linked list is kept of all running traceable app.
91d76f53 95 */
56fff090 96struct ust_app {
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97 pid_t ppid;
98 uid_t uid; /* User ID that owns the apps */
aea829b3 99 gid_t gid; /* Group ID that owns the apps */
7753dea8 100 int bits_per_long;
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101 uint32_t v_major; /* Verion major number */
102 uint32_t v_minor; /* Verion minor number */
103 char name[17]; /* Process name (short) */
48842b30 104 struct cds_lfht *sessions;
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105 struct cds_lfht_node node;
106 struct ust_app_key key;
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107};
108
74d0b642 109#ifdef HAVE_LIBLTTNG_UST_CTL
3bd1e081 110
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111int ust_app_register(struct ust_register_msg *msg, int sock);
112void ust_app_unregister(int sock);
5b4a0ec0 113int ust_app_create_channel_all(struct ltt_ust_session *usess,
48842b30 114 struct ltt_ust_channel *uchan);
5b4a0ec0 115int ust_app_create_event_all(struct ltt_ust_session *usess,
48842b30 116 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
f6a9efaa 117unsigned long ust_app_list_count(void);
421cb601 118int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
8be98f9a 119int ust_app_stop_trace(struct ltt_ust_session *usess, struct ust_app *app);
421cb601 120int ust_app_start_trace_all(struct ltt_ust_session *usess);
8be98f9a 121int ust_app_stop_trace_all(struct ltt_ust_session *usess);
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122int ust_app_destroy_trace(struct ltt_ust_session *usess, struct ust_app *app);
123int ust_app_destroy_trace_all(struct ltt_ust_session *usess);
b551a063 124int ust_app_list_events(struct lttng_event **events);
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125int ust_app_disable_channel_all(struct ltt_ust_session *usess,
126 struct ltt_ust_channel *uchan);
127int ust_app_enable_channel_all(struct ltt_ust_session *usess,
128 struct ltt_ust_channel *uchan);
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129int ust_app_enable_event_all(struct ltt_ust_session *usess,
130 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
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131int ust_app_disable_event_all(struct ltt_ust_session *usess,
132 struct ltt_ust_channel *uchan);
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133int ust_app_disable_event(struct ltt_ust_session *usess,
134 struct ltt_ust_channel *uchan, char *event_name);
487cf67c 135void ust_app_global_update(struct ltt_ust_session *usess, int sock);
91d76f53 136
56fff090 137void ust_app_clean_list(void);
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138void ust_app_ht_alloc(void);
139struct cds_lfht *ust_app_get_ht(void);
140struct ust_app *ust_app_find_by_pid(pid_t pid);
44d3bd01 141
74d0b642 142#else /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 143
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144static inline
145int ust_app_destroy_trace_all(struct ltt_ust_session *usess)
146{
147 return 0;
148}
d974f197 149static inline
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150int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
151{
152 return 0;
153}
154static inline
155int ust_app_start_trace_all(struct ltt_ust_session *usess)
d974f197 156{
5cf5d0e7 157 return 0;
d974f197 158}
3bd1e081 159static inline
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160int ust_app_stop_trace_all(struct ltt_ust_session *usess)
161{
162 return 0;
163}
164static inline
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165int ust_app_list_events(struct lttng_event **events)
166{
167 return 0;
168}
169static inline
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170int ust_app_register(struct ust_register_msg *msg, int sock)
171{
172 return -ENOSYS;
173}
174static inline
175void ust_app_unregister(int sock)
176{
177}
178static inline
179unsigned int ust_app_list_count(void)
180{
181 return 0;
182}
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183static inline
184void ust_app_lock_list(void)
185{
186}
187static inline
188void ust_app_unlock_list(void)
189{
190}
191static inline
192void ust_app_clean_list(void)
193{
194}
195static inline
196struct ust_app_list *ust_app_get_list(void)
197{
198 return NULL;
199}
200static inline
201struct ust_app *ust_app_get_by_pid(pid_t pid)
202{
203 return NULL;
204}
48842b30 205static inline
421cb601 206int ust_app_add_channel_all(struct ltt_ust_session *usess,
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207 struct ltt_ust_channel *uchan)
208{
209 return 0;
210}
d974f197 211static inline
421cb601 212int ust_app_add_event_all(struct ltt_ust_session *usess,
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213 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
214{
5cf5d0e7 215 return 0;
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216}
217static inline
218struct cds_lfht *ust_app_get_ht(void)
219{
220 return NULL;
221}
222static inline
223void ust_app_ht_alloc(void)
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224{}
225static inline
226void ust_app_global_update(struct ltt_ust_session *usess, int sock)
227{}
228static inline
229int ust_app_disable_channel_all(struct ltt_ust_session *usess,
230 struct ltt_ust_channel *uchan)
d974f197 231{
cc920def 232 return 0;
d974f197 233}
487cf67c 234static inline
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235int ust_app_enable_channel_all(struct ltt_ust_session *usess,
236 struct ltt_ust_channel *uchan)
487cf67c 237{
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238 return 0;
239}
240static inline
241int ust_app_disable_event_all(struct ltt_ust_session *usess,
242 struct ltt_ust_channel *uchan)
243{
244 return 0;
245}
246static inline
247int ust_app_disable_event(struct ltt_ust_session *usess,
248 struct ltt_ust_channel *uchan, char *event_name)
249{
250 return 0;
251}
252static inline
253int ust_app_create_channel_all(struct ltt_ust_session *usess,
254 struct ltt_ust_channel *uchan)
255{
256 return 0;
257}
258static inline
259int ust_app_create_event_all(struct ltt_ust_session *usess,
260 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
261{
262 return 0;
487cf67c 263}
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264static inline
265int ust_app_enable_event_all(struct ltt_ust_session *usess,
266 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
267{
268 return 0;
269}
48842b30 270
74d0b642 271#endif /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 272
f6a9efaa 273#endif /* _LTT_UST_APP_H */
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