lttng disable_events: ensure end of string is set to \0
[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_disable_event_all(struct ltt_ust_session *usess,
130 struct ltt_ust_channel *uchan);
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131int ust_app_disable_event(struct ltt_ust_session *usess,
132 struct ltt_ust_channel *uchan, char *event_name);
487cf67c 133void ust_app_global_update(struct ltt_ust_session *usess, int sock);
91d76f53 134
56fff090 135void ust_app_clean_list(void);
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136void ust_app_ht_alloc(void);
137struct cds_lfht *ust_app_get_ht(void);
138struct ust_app *ust_app_find_by_pid(pid_t pid);
44d3bd01 139
74d0b642 140#else /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 141
d974f197 142static inline
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143int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
144{
145 return 0;
146}
147static inline
148int ust_app_start_trace_all(struct ltt_ust_session *usess)
d974f197 149{
5cf5d0e7 150 return 0;
d974f197 151}
3bd1e081 152static inline
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153int ust_app_list_events(struct lttng_event **events)
154{
155 return 0;
156}
157static inline
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158int ust_app_register(struct ust_register_msg *msg, int sock)
159{
160 return -ENOSYS;
161}
162static inline
163void ust_app_unregister(int sock)
164{
165}
166static inline
167unsigned int ust_app_list_count(void)
168{
169 return 0;
170}
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171static inline
172void ust_app_lock_list(void)
173{
174}
175static inline
176void ust_app_unlock_list(void)
177{
178}
179static inline
180void ust_app_clean_list(void)
181{
182}
183static inline
184struct ust_app_list *ust_app_get_list(void)
185{
186 return NULL;
187}
188static inline
189struct ust_app *ust_app_get_by_pid(pid_t pid)
190{
191 return NULL;
192}
48842b30 193static inline
421cb601 194int ust_app_add_channel_all(struct ltt_ust_session *usess,
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195 struct ltt_ust_channel *uchan)
196{
197 return 0;
198}
d974f197 199static inline
421cb601 200int ust_app_add_event_all(struct ltt_ust_session *usess,
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201 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
202{
5cf5d0e7 203 return 0;
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204}
205static inline
206struct cds_lfht *ust_app_get_ht(void)
207{
208 return NULL;
209}
210static inline
211void ust_app_ht_alloc(void)
212{
213}
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214static inline
215void ust_app_global_update(struct ltt_ust_session *usess, int sock)
216{
217}
48842b30 218
74d0b642 219#endif /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 220
f6a9efaa 221#endif /* _LTT_UST_APP_H */
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