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cac3069d DG |
1 | /* |
2 | * Copyright (C) 2013 David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
11 | * for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public License | |
14 | * along with this library; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
18 | #ifndef LTTNG_CTL_HELPER_H | |
19 | #define LTTNG_CTL_HELPER_H | |
20 | ||
cac3069d DG |
21 | #include <stdio.h> |
22 | ||
23 | #include <common/sessiond-comm/sessiond-comm.h> | |
24 | #include <lttng/lttng.h> | |
25 | ||
26 | /* | |
27 | * NOTE: Every symbol in this helper header MUST be set to hidden so not to | |
28 | * polute the library name space. Use LTTNG_HIDDEN macro before declaring the | |
29 | * function in the C file. | |
30 | */ | |
31 | ||
32 | /* Copy helper functions. */ | |
33 | void lttng_ctl_copy_string(char *dst, const char *src, size_t len); | |
34 | void lttng_ctl_copy_lttng_domain(struct lttng_domain *dst, | |
35 | struct lttng_domain *src); | |
36 | ||
37 | /* | |
38 | * Sends the lttcomm message to the session daemon and fills buf of the | |
39 | * returned data is not NULL. | |
40 | * | |
41 | * Return the size of the received data on success or else a negative lttng | |
42 | * error code. If buf is NULL, 0 is returned on success. | |
43 | */ | |
44 | int lttng_ctl_ask_sessiond_varlen(struct lttcomm_session_msg *lsm, | |
45 | void *vardata, size_t varlen, void **buf); | |
46 | ||
47 | /* | |
48 | * Use this if no variable length data needs to be sent. | |
49 | */ | |
50 | static inline | |
51 | int lttng_ctl_ask_sessiond(struct lttcomm_session_msg *lsm, void **buf) | |
52 | { | |
53 | return lttng_ctl_ask_sessiond_varlen(lsm, NULL, 0, buf); | |
54 | } | |
55 | ||
6c71277b MD |
56 | int lttng_check_tracing_group(void); |
57 | ||
cac3069d | 58 | #endif /* LTTNG_CTL_HELPER_H */ |