Add creation time to UST app path to ensure uniqueness
[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
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29extern int ust_consumer_fd;
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;
41 char name[16];
42};
43
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44/*
45 * Global applications HT used by the session daemon.
46 */
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47struct cds_lfht *ust_app_ht;
48
49struct cds_lfht *ust_app_sock_key_map;
50
51struct ust_app_key {
52 pid_t pid;
53 int sock;
54 struct cds_lfht_node node;
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55};
56
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57struct ust_app_event {
58 int enabled;
59 int handle;
13161846 60 struct lttng_ust_object_data *obj;
284d8f55 61 struct lttng_ust_event attr;
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62 char name[LTTNG_UST_SYM_NAME_LEN];
63 struct cds_lfht *ctx;
64 struct cds_lfht_node node;
65};
66
67struct ust_app_channel {
68 int enabled;
69 int handle;
70 char name[LTTNG_UST_SYM_NAME_LEN];
71 struct lttng_ust_channel attr;
13161846 72 struct lttng_ust_object_data *obj;
5af2f756 73 struct ltt_ust_stream_list streams;
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74 struct cds_lfht *ctx;
75 struct cds_lfht *events;
76 struct cds_lfht_node node;
77};
78
79struct ust_app_session {
80 int enabled;
81 int handle; /* Used has unique identifier */
82 unsigned int uid;
83 struct ltt_ust_metadata *metadata;
13161846 84 struct lttng_ust_object_data *obj;
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85 struct cds_lfht *channels; /* Registered channels */
86 struct cds_lfht_node node;
477d7741 87 char path[PATH_MAX];
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88};
89
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90/*
91 * Registered traceable applications. Libust registers to the session daemon
050349bb 92 * and a linked list is kept of all running traceable app.
91d76f53 93 */
56fff090 94struct ust_app {
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95 pid_t ppid;
96 uid_t uid; /* User ID that owns the apps */
97 gid_t gid; /* Group ID that owns the apps */
98 uint32_t v_major; /* Verion major number */
99 uint32_t v_minor; /* Verion minor number */
100 char name[17]; /* Process name (short) */
48842b30 101 struct cds_lfht *sessions;
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102 struct cds_lfht_node node;
103 struct ust_app_key key;
d80a6244 104 int sock_closed;
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105};
106
74d0b642 107#ifdef HAVE_LIBLTTNG_UST_CTL
3bd1e081 108
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109int ust_app_register(struct ust_register_msg *msg, int sock);
110void ust_app_unregister(int sock);
5b4a0ec0 111int ust_app_create_channel_all(struct ltt_ust_session *usess,
48842b30 112 struct ltt_ust_channel *uchan);
5b4a0ec0 113int ust_app_create_event_all(struct ltt_ust_session *usess,
48842b30 114 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
f6a9efaa 115unsigned long ust_app_list_count(void);
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116int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
117int ust_app_start_trace_all(struct ltt_ust_session *usess);
b551a063 118int ust_app_list_events(struct lttng_event **events);
487cf67c 119void ust_app_global_update(struct ltt_ust_session *usess, int sock);
91d76f53 120
56fff090 121void ust_app_clean_list(void);
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122void ust_app_ht_alloc(void);
123struct cds_lfht *ust_app_get_ht(void);
124struct ust_app *ust_app_find_by_pid(pid_t pid);
44d3bd01 125
74d0b642 126#else /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 127
d974f197 128static inline
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129int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
130{
131 return 0;
132}
133static inline
134int ust_app_start_trace_all(struct ltt_ust_session *usess)
d974f197 135{
5cf5d0e7 136 return 0;
d974f197 137}
3bd1e081 138static inline
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139int ust_app_list_events(struct lttng_event **events)
140{
141 return 0;
142}
143static inline
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144int ust_app_register(struct ust_register_msg *msg, int sock)
145{
146 return -ENOSYS;
147}
148static inline
149void ust_app_unregister(int sock)
150{
151}
152static inline
153unsigned int ust_app_list_count(void)
154{
155 return 0;
156}
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157static inline
158void ust_app_lock_list(void)
159{
160}
161static inline
162void ust_app_unlock_list(void)
163{
164}
165static inline
166void ust_app_clean_list(void)
167{
168}
169static inline
170struct ust_app_list *ust_app_get_list(void)
171{
172 return NULL;
173}
174static inline
175struct ust_app *ust_app_get_by_pid(pid_t pid)
176{
177 return NULL;
178}
48842b30 179static inline
421cb601 180int ust_app_add_channel_all(struct ltt_ust_session *usess,
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181 struct ltt_ust_channel *uchan)
182{
183 return 0;
184}
d974f197 185static inline
421cb601 186int ust_app_add_event_all(struct ltt_ust_session *usess,
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187 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
188{
5cf5d0e7 189 return 0;
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190}
191static inline
192struct cds_lfht *ust_app_get_ht(void)
193{
194 return NULL;
195}
196static inline
197void ust_app_ht_alloc(void)
198{
199}
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200static inline
201void ust_app_global_update(struct ltt_ust_session *usess, int sock)
202{
203}
48842b30 204
74d0b642 205#endif /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 206
f6a9efaa 207#endif /* _LTT_UST_APP_H */
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