Commit | Line | Data |
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cac3069d DG |
1 | /* |
2 | * Copyright (C) 2013 David Goulet <dgoulet@efficios.com> | |
3 | * | |
ab5be9fa | 4 | * SPDX-License-Identifier: LGPL-2.1-only |
cac3069d | 5 | * |
cac3069d DG |
6 | */ |
7 | ||
8 | #ifndef LTTNG_CTL_HELPER_H | |
9 | #define LTTNG_CTL_HELPER_H | |
10 | ||
cac3069d DG |
11 | #include <stdio.h> |
12 | ||
13 | #include <common/sessiond-comm/sessiond-comm.h> | |
14 | #include <lttng/lttng.h> | |
15 | ||
16 | /* | |
17 | * NOTE: Every symbol in this helper header MUST be set to hidden so not to | |
18 | * polute the library name space. Use LTTNG_HIDDEN macro before declaring the | |
19 | * function in the C file. | |
20 | */ | |
21 | ||
22 | /* Copy helper functions. */ | |
23 | void lttng_ctl_copy_string(char *dst, const char *src, size_t len); | |
24 | void lttng_ctl_copy_lttng_domain(struct lttng_domain *dst, | |
25 | struct lttng_domain *src); | |
26 | ||
27 | /* | |
c2d69327 | 28 | * Sends the lttcomm message to the session daemon and fills buf if the |
cac3069d DG |
29 | * returned data is not NULL. |
30 | * | |
31 | * Return the size of the received data on success or else a negative lttng | |
32 | * error code. If buf is NULL, 0 is returned on success. | |
33 | */ | |
a04d53fc FD |
34 | int lttng_ctl_ask_sessiond_fds_varlen(struct lttcomm_session_msg *lsm, |
35 | const int *fds, size_t nb_fd, | |
795a978d PP |
36 | const void *vardata, size_t vardata_len, |
37 | void **user_payload_buf, void **user_cmd_header_buf, | |
38 | size_t *user_cmd_header_len); | |
39 | ||
40 | /* | |
a04d53fc | 41 | * Calls lttng_ctl_ask_sessiond_fds_varlen() with no expected command header. |
795a978d PP |
42 | */ |
43 | static inline | |
44 | int lttng_ctl_ask_sessiond_varlen_no_cmd_header(struct lttcomm_session_msg *lsm, | |
45 | void *vardata, size_t vardata_len, void **user_payload_buf) | |
46 | { | |
a04d53fc | 47 | return lttng_ctl_ask_sessiond_fds_varlen(lsm, NULL, 0, vardata, |
795a978d PP |
48 | vardata_len, user_payload_buf, NULL, NULL); |
49 | } | |
cac3069d | 50 | |
a04d53fc FD |
51 | /* |
52 | * Calls lttng_ctl_ask_sessiond_fds_varlen() with fds and no expected command header. | |
53 | */ | |
54 | static inline | |
55 | int lttng_ctl_ask_sessiond_fds_no_cmd_header(struct lttcomm_session_msg *lsm, | |
56 | const int *fds, size_t nb_fd, void **buf) | |
57 | { | |
58 | return lttng_ctl_ask_sessiond_fds_varlen(lsm, fds, nb_fd, NULL, | |
59 | 0, NULL, NULL, NULL); | |
60 | } | |
cac3069d DG |
61 | /* |
62 | * Use this if no variable length data needs to be sent. | |
63 | */ | |
64 | static inline | |
65 | int lttng_ctl_ask_sessiond(struct lttcomm_session_msg *lsm, void **buf) | |
66 | { | |
795a978d | 67 | return lttng_ctl_ask_sessiond_varlen_no_cmd_header(lsm, NULL, 0, buf); |
cac3069d DG |
68 | } |
69 | ||
6c71277b MD |
70 | int lttng_check_tracing_group(void); |
71 | ||
3e3665b8 JG |
72 | int connect_sessiond(void); |
73 | ||
cac3069d | 74 | #endif /* LTTNG_CTL_HELPER_H */ |