Clean-up: waiter: coding style changes
[lttng-tools.git] / src / lib / lttng-ctl / lttng-ctl-helper.hpp
1 /*
2 * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
3 *
4 * SPDX-License-Identifier: LGPL-2.1-only
5 *
6 */
7
8 #ifndef LTTNG_CTL_HELPER_H
9 #define LTTNG_CTL_HELPER_H
10
11 #include <common/sessiond-comm/sessiond-comm.hpp>
12
13 #include <lttng/lttng.h>
14
15 #include <stdio.h>
16
17 /* Copy helper functions. */
18 void lttng_ctl_copy_lttng_domain(struct lttng_domain *dst, struct lttng_domain *src);
19
20 /*
21 * Sends the lttcomm message to the session daemon and fills buf if the
22 * returned data is not NULL.
23 *
24 * Return the size of the received data on success or else a negative lttng
25 * error code. If buf is NULL, 0 is returned on success.
26 */
27 int lttng_ctl_ask_sessiond_fds_varlen(struct lttcomm_session_msg *lsm,
28 const int *fds,
29 size_t nb_fd,
30 const void *vardata,
31 size_t vardata_len,
32 void **user_payload_buf,
33 void **user_cmd_header_buf,
34 size_t *user_cmd_header_len);
35
36 /*
37 * Sends the lttcomm message to the session daemon and fills the reply payload.
38 *
39 * Return the size of the received data on success or else a negative lttng
40 * error code.
41 */
42 int lttng_ctl_ask_sessiond_payload(struct lttng_payload_view *message, struct lttng_payload *reply);
43
44 /*
45 * Calls lttng_ctl_ask_sessiond_fds_varlen() with no expected command header.
46 */
47 static inline int lttng_ctl_ask_sessiond_varlen_no_cmd_header(struct lttcomm_session_msg *lsm,
48 const void *vardata,
49 size_t vardata_len,
50 void **user_payload_buf)
51 {
52 return lttng_ctl_ask_sessiond_fds_varlen(
53 lsm, NULL, 0, vardata, vardata_len, user_payload_buf, NULL, NULL);
54 }
55
56 /*
57 * Calls lttng_ctl_ask_sessiond_fds_varlen() with fds and no expected command header.
58 */
59 static inline int lttng_ctl_ask_sessiond_fds_no_cmd_header(struct lttcomm_session_msg *lsm,
60 const int *fds,
61 size_t nb_fd,
62 void **buf __attribute__((unused)))
63 {
64 return lttng_ctl_ask_sessiond_fds_varlen(lsm, fds, nb_fd, NULL, 0, NULL, NULL, NULL);
65 }
66 /*
67 * Use this if no variable length data needs to be sent.
68 */
69 static inline int lttng_ctl_ask_sessiond(struct lttcomm_session_msg *lsm, void **buf)
70 {
71 return lttng_ctl_ask_sessiond_varlen_no_cmd_header(lsm, NULL, 0, buf);
72 }
73
74 int lttng_check_tracing_group(void);
75
76 int connect_sessiond(void);
77
78 #endif /* LTTNG_CTL_HELPER_H */
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