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fac6795d DG |
1 | /* Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> |
2 | * | |
3 | * This program is free software; you can redistribute it and/or | |
4 | * modify it under the terms of the GNU General Public License | |
5 | * as published by the Free Software Foundation; either version 2 | |
6 | * of the License, or (at your option) any later version. | |
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 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
16 | * | |
17 | */ | |
18 | ||
19 | #ifndef _LIBLTTSESSIONDCOMM_H | |
20 | #define _LIBLTTSESSIONDCOMM_H | |
21 | ||
22 | #include <limits.h> | |
23 | #include <uuid/uuid.h> | |
24 | ||
25 | /* Default unix socket path */ | |
26 | #define DEFAULT_GLOBAL_CLIENT_UNIX_SOCK "/tmp/client-ltt-sessiond" | |
27 | #define DEFAULT_GLOBAL_APPS_UNIX_SOCK "/tmp/apps-ltt-sessiond" | |
28 | #define DEFAULT_HOME_APPS_UNIX_SOCK "%s/.apps-ltt-sessiond" | |
29 | #define DEFAULT_HOME_CLIENT_UNIX_SOCK "%s/.client-ltt-sessiond" | |
30 | ||
31 | /* Queue size of listen(2) */ | |
32 | #define MAX_LISTEN 10 | |
33 | ||
fac6795d DG |
34 | /* Get the error code index from 0 since |
35 | * LTTCOMM_OK start at 1000 | |
36 | */ | |
686204ab | 37 | #define LTTCOMM_ERR_INDEX(code) (code - LTTCOMM_OK) |
fac6795d DG |
38 | |
39 | enum lttcomm_command_type { | |
40 | LTTNG_CREATE_SESSION, | |
41 | LTTNG_DESTROY_SESSION, | |
42 | LTTNG_FORCE_SUBBUF_SWITCH, | |
43 | LTTNG_GET_ALL_SESSION, | |
44 | LTTNG_GET_SOCK_PATH, | |
45 | LTTNG_GET_SUBBUF_NUM_SIZE, | |
46 | LTTNG_LIST_MARKERS, | |
47 | LTTNG_LIST_SESSIONS, | |
48 | LTTNG_LIST_TRACE_EVENTS, | |
49 | LTTNG_SETUP_TRACE, | |
50 | LTTNG_SET_SOCK_PATH, | |
51 | LTTNG_SET_SUBBUF_NUM, | |
52 | LTTNG_SET_SUBBUF_SIZE, | |
53 | UST_ALLOC_TRACE, | |
54 | UST_CREATE_TRACE, | |
55 | UST_DESTROY_TRACE, | |
56 | UST_DISABLE_MARKER, | |
57 | UST_ENABLE_MARKER, | |
58 | UST_LIST_APPS, | |
59 | UST_START_TRACE, | |
60 | UST_STOP_TRACE, | |
61 | }; | |
62 | ||
63 | /* | |
64 | * lttcomm error code. | |
65 | */ | |
66 | enum lttcomm_return_code { | |
67 | LTTCOMM_OK = 1000, /* Ok */ | |
68 | LTTCOMM_ERR, /* Unknown Error */ | |
69 | LTTCOMM_UND, /* Undefine command */ | |
70 | LTTCOMM_ALLOC_FAIL, /* Trace allocation fail */ | |
71 | LTTCOMM_NO_SESSION, /* No session found */ | |
72 | LTTCOMM_CREATE_FAIL, /* Create trace fail */ | |
73 | LTTCOMM_SESSION_FAIL, /* Create session fail */ | |
74 | LTTCOMM_START_FAIL, /* Start tracing fail */ | |
75 | LTTCOMM_LIST_FAIL, /* Listing apps fail */ | |
e065084a | 76 | LTTCOMM_NO_APPS, /* No traceable application */ |
57167058 | 77 | LTTCOMM_NO_SESS, /* No sessions available */ |
ca95a216 | 78 | LTTCOMM_FATAL, /* Session daemon had a fatal error */ |
379473d2 DG |
79 | LTTCOMM_NO_TRACEABLE, /* Error for non traceable app */ |
80 | LTTCOMM_SELECT_SESS, /* Must select a session */ | |
fac6795d DG |
81 | LTTCOMM_NR, /* Last element */ |
82 | }; | |
83 | ||
84 | /* | |
85 | * Data structure for ltt-session received message | |
86 | */ | |
87 | struct lttcomm_session_msg { | |
88 | /* Common data to almost all command */ | |
89 | enum lttcomm_command_type cmd_type; | |
8028d920 | 90 | uuid_t session_id; |
fac6795d DG |
91 | char trace_name[NAME_MAX]; |
92 | char session_name[NAME_MAX]; | |
93 | pid_t pid; | |
94 | union { | |
95 | struct { | |
96 | int auto_session; | |
97 | } create_session; | |
98 | /* Marker data */ | |
99 | struct { | |
100 | char channel[NAME_MAX]; | |
101 | char marker[NAME_MAX]; | |
102 | } marker; | |
103 | /* SET_SOCK_PATH */ | |
104 | struct { | |
105 | char sock_path[PATH_MAX]; | |
106 | } sock_path; | |
107 | /* SET_SUBBUF_NUM */ | |
108 | struct { | |
109 | unsigned int subbuf_num; | |
110 | char channel[NAME_MAX]; | |
111 | } subbuf_num; | |
112 | /* SET_SUBBUF_SIZE */ | |
113 | struct { | |
114 | unsigned int subbuf_size; | |
115 | char channel[NAME_MAX]; | |
116 | } subbuf_size; | |
117 | } u; | |
118 | }; | |
119 | ||
120 | /* | |
ca95a216 DG |
121 | * Data structure for the lttng client response. |
122 | * | |
123 | * This data structure is the control struct use in | |
124 | * the header of the transmission. NEVER put variable | |
125 | * size data in here. | |
fac6795d DG |
126 | */ |
127 | struct lttcomm_lttng_msg { | |
128 | enum lttcomm_command_type cmd_type; | |
129 | enum lttcomm_return_code ret_code; | |
8028d920 | 130 | uuid_t session_id; |
fac6795d DG |
131 | pid_t pid; |
132 | char trace_name[NAME_MAX]; | |
ca95a216 | 133 | unsigned int size_payload; |
fac6795d DG |
134 | }; |
135 | ||
136 | extern int lttcomm_create_unix_sock(const char *pathname); | |
137 | extern int lttcomm_connect_unix_sock(const char *pathname); | |
138 | extern int lttcomm_accept_unix_sock(int sock); | |
139 | extern int lttcomm_listen_unix_sock(int sock); | |
87378cf5 | 140 | extern int lttcomm_close_unix_sock(int sock); |
fac6795d DG |
141 | extern ssize_t lttcomm_recv_unix_sock(int sock, void *buf, size_t len); |
142 | extern ssize_t lttcomm_send_unix_sock(int sock, void *buf, size_t len); | |
143 | extern const char *lttcomm_get_readable_code(enum lttcomm_return_code code); | |
144 | ||
145 | #endif /* _LIBLTTSESSIONDCOMM_H */ |