Commit | Line | Data |
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c0a66c84 JG |
1 | /* |
2 | * Copyright (C) 2020 Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: LGPL-2.1-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #include "payload.h" | |
e368fb43 JG |
9 | #include <common/dynamic-array.h> |
10 | #include <common/dynamic-buffer.h> | |
11 | #include <common/error.h> | |
c0a66c84 JG |
12 | |
13 | LTTNG_HIDDEN | |
14 | void lttng_payload_init(struct lttng_payload *payload) | |
15 | { | |
16 | assert(payload); | |
17 | lttng_dynamic_buffer_init(&payload->buffer); | |
18 | lttng_dynamic_array_init(&payload->_fds, sizeof(int), NULL); | |
19 | } | |
20 | ||
e368fb43 JG |
21 | LTTNG_HIDDEN |
22 | int lttng_payload_copy(const struct lttng_payload *src_payload, | |
23 | struct lttng_payload *dst_payload) | |
24 | { | |
25 | int ret; | |
26 | size_t i; | |
27 | ||
e368fb43 JG |
28 | ret = lttng_dynamic_buffer_append_buffer( |
29 | &dst_payload->buffer, &src_payload->buffer); | |
30 | if (ret) { | |
31 | goto error; | |
32 | } | |
33 | ||
34 | for (i = 0; i < lttng_dynamic_array_get_count(&src_payload->_fds); | |
35 | i++) { | |
36 | int dst_fd; | |
37 | const int src_fd = *((int *) lttng_dynamic_array_get_element( | |
38 | &src_payload->_fds, i)); | |
39 | ||
40 | dst_fd = dup(src_fd); | |
41 | if (dst_fd < 0) { | |
42 | PERROR("Failed to duplicate file descriptor while copying a payload"); | |
43 | ret = dst_fd; | |
44 | goto error; | |
45 | } | |
46 | ||
47 | ret = lttng_payload_push_fd(dst_payload, dst_fd); | |
48 | if (ret) { | |
49 | const int close_ret = close(dst_fd); | |
50 | ||
51 | if (close_ret < 0) { | |
52 | PERROR("Failed to close duplicated file descriptor while copying a payload"); | |
53 | } | |
54 | ||
55 | goto error; | |
56 | } | |
57 | } | |
58 | ||
59 | end: | |
60 | return ret; | |
61 | error: | |
e368fb43 JG |
62 | goto end; |
63 | } | |
64 | ||
c0a66c84 JG |
65 | LTTNG_HIDDEN |
66 | void lttng_payload_reset(struct lttng_payload *payload) | |
67 | { | |
68 | if (!payload) { | |
69 | return; | |
70 | } | |
71 | ||
72 | lttng_dynamic_buffer_reset(&payload->buffer); | |
73 | lttng_dynamic_array_reset(&payload->_fds); | |
74 | } | |
75 | ||
76 | LTTNG_HIDDEN | |
77 | int lttng_payload_push_fd(struct lttng_payload *payload, int fd) | |
78 | { | |
79 | int ret; | |
80 | ||
81 | if (!payload) { | |
82 | ret = -1; | |
83 | goto end; | |
84 | } | |
85 | ||
86 | ret = lttng_dynamic_array_add_element(&payload->_fds, &fd); | |
87 | end: | |
88 | return ret; | |
89 | } |