Fix not NULL pointer on size 0
[lttng-tools.git] / lttng-sessiond / ust-app.h
CommitLineData
91d76f53
DG
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
82a3637f
DG
6 * as published by the Free Software Foundation; only version 2
7 * of the License.
91d76f53
DG
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
f6a9efaa
DG
19#ifndef _LTT_UST_APP_H
20#define _LTT_UST_APP_H
91d76f53 21
099e26bd 22#include <stdint.h>
1e307fab
DG
23#include <urcu/list.h>
24
44d3bd01
DG
25#include "trace-ust.h"
26
099e26bd
DG
27/*
28 * Application registration data structure.
29 */
30struct ust_register_msg {
31 uint32_t major;
32 uint32_t minor;
33 pid_t pid;
34 pid_t ppid;
35 uid_t uid;
36 gid_t gid;
37 char name[16];
38};
39
48842b30
DG
40/*
41 * Global applications HT used by the session daemon.
42 */
f6a9efaa
DG
43struct cds_lfht *ust_app_ht;
44
45struct cds_lfht *ust_app_sock_key_map;
46
47struct ust_app_key {
48 pid_t pid;
49 int sock;
50 struct cds_lfht_node node;
91d76f53
DG
51};
52
48842b30
DG
53struct ust_app_event {
54 int enabled;
55 int handle;
13161846 56 struct lttng_ust_object_data *obj;
48842b30
DG
57 char name[LTTNG_UST_SYM_NAME_LEN];
58 struct cds_lfht *ctx;
59 struct cds_lfht_node node;
60};
61
62struct ust_app_channel {
63 int enabled;
64 int handle;
65 char name[LTTNG_UST_SYM_NAME_LEN];
66 struct lttng_ust_channel attr;
13161846 67 struct lttng_ust_object_data *obj;
5af2f756 68 struct ltt_ust_stream_list streams;
48842b30
DG
69 struct cds_lfht *ctx;
70 struct cds_lfht *events;
71 struct cds_lfht_node node;
72};
73
74struct ust_app_session {
75 int enabled;
76 int handle; /* Used has unique identifier */
77 unsigned int uid;
78 struct ltt_ust_metadata *metadata;
13161846 79 struct lttng_ust_object_data *obj;
48842b30
DG
80 struct cds_lfht *channels; /* Registered channels */
81 struct cds_lfht_node node;
82};
83
f6a9efaa
DG
84/*
85 * Registered traceable applications. Libust registers to the session daemon
050349bb 86 * and a linked list is kept of all running traceable app.
91d76f53 87 */
56fff090 88struct ust_app {
099e26bd
DG
89 pid_t ppid;
90 uid_t uid; /* User ID that owns the apps */
91 gid_t gid; /* Group ID that owns the apps */
92 uint32_t v_major; /* Verion major number */
93 uint32_t v_minor; /* Verion minor number */
94 char name[17]; /* Process name (short) */
48842b30 95 struct cds_lfht *sessions;
f6a9efaa
DG
96 struct cds_lfht_node node;
97 struct ust_app_key key;
91d76f53
DG
98};
99
74d0b642 100#ifdef HAVE_LIBLTTNG_UST_CTL
3bd1e081 101
56fff090
DG
102int ust_app_register(struct ust_register_msg *msg, int sock);
103void ust_app_unregister(int sock);
421cb601 104int ust_app_add_channel_all(struct ltt_ust_session *usess,
48842b30 105 struct ltt_ust_channel *uchan);
421cb601 106int ust_app_add_event_all(struct ltt_ust_session *usess,
48842b30 107 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent);
f6a9efaa 108unsigned long ust_app_list_count(void);
421cb601
DG
109int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app);
110int ust_app_start_trace_all(struct ltt_ust_session *usess);
487cf67c 111void ust_app_global_update(struct ltt_ust_session *usess, int sock);
91d76f53 112
56fff090 113void ust_app_clean_list(void);
f6a9efaa
DG
114void ust_app_ht_alloc(void);
115struct cds_lfht *ust_app_get_ht(void);
116struct ust_app *ust_app_find_by_pid(pid_t pid);
44d3bd01 117
74d0b642 118#else /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 119
d974f197 120static inline
421cb601
DG
121int ust_app_start_trace(struct ltt_ust_session *usess, struct ust_app *app)
122{
123 return 0;
124}
125static inline
126int ust_app_start_trace_all(struct ltt_ust_session *usess)
d974f197 127{
5cf5d0e7 128 return 0;
d974f197 129}
3bd1e081
MD
130static inline
131int ust_app_register(struct ust_register_msg *msg, int sock)
132{
133 return -ENOSYS;
134}
135static inline
136void ust_app_unregister(int sock)
137{
138}
139static inline
140unsigned int ust_app_list_count(void)
141{
142 return 0;
143}
3bd1e081
MD
144static inline
145void ust_app_lock_list(void)
146{
147}
148static inline
149void ust_app_unlock_list(void)
150{
151}
152static inline
153void ust_app_clean_list(void)
154{
155}
156static inline
157struct ust_app_list *ust_app_get_list(void)
158{
159 return NULL;
160}
161static inline
162struct ust_app *ust_app_get_by_pid(pid_t pid)
163{
164 return NULL;
165}
48842b30 166static inline
421cb601 167int ust_app_add_channel_all(struct ltt_ust_session *usess,
48842b30
DG
168 struct ltt_ust_channel *uchan)
169{
170 return 0;
171}
d974f197 172static inline
421cb601 173int ust_app_add_event_all(struct ltt_ust_session *usess,
d974f197
DG
174 struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent)
175{
5cf5d0e7 176 return 0;
d974f197
DG
177}
178static inline
179struct cds_lfht *ust_app_get_ht(void)
180{
181 return NULL;
182}
183static inline
184void ust_app_ht_alloc(void)
185{
186}
487cf67c
DG
187static inline
188void ust_app_global_update(struct ltt_ust_session *usess, int sock)
189{
190}
48842b30 191
74d0b642 192#endif /* HAVE_LIBLTTNG_UST_CTL */
3bd1e081 193
f6a9efaa 194#endif /* _LTT_UST_APP_H */
This page took 0.050207 seconds and 4 git commands to generate.