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808cb744 JR |
1 | /* |
2 | * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> | |
3 | * | |
4 | * SPDX-License-Identifier: LGPL-2.1-only | |
5 | * | |
6 | */ | |
7 | ||
8 | #ifndef LTTNG_KERNEL_PROBE_INTERNAL_H | |
9 | #define LTTNG_KERNEL_PROBE_INTERNAL_H | |
10 | ||
11 | #include <common/fd-handle.h> | |
12 | #include <common/macros.h> | |
13 | #include <lttng/kernel-probe.h> | |
740da7d5 | 14 | #include <lttng/lttng-error.h> |
808cb744 JR |
15 | #include <stdbool.h> |
16 | #include <stdint.h> | |
17 | #include <sys/types.h> | |
18 | ||
740da7d5 SM |
19 | #ifdef __cplusplus |
20 | extern "C" { | |
21 | #endif | |
22 | ||
808cb744 JR |
23 | struct lttng_payload; |
24 | struct lttng_payload_view; | |
25 | struct lttng_dynamic_buffer; | |
6a751b95 | 26 | struct mi_writer; |
808cb744 JR |
27 | |
28 | typedef bool (*kernel_probe_location_equal_cb)( | |
29 | const struct lttng_kernel_probe_location *a, | |
30 | const struct lttng_kernel_probe_location *b); | |
31 | typedef int (*kernel_probe_location_serialize_cb)( | |
32 | const struct lttng_kernel_probe_location *kernel_probe_location, | |
33 | struct lttng_payload *payload); | |
34 | typedef bool (*kernel_probe_location_equal_cb)( | |
35 | const struct lttng_kernel_probe_location *a, | |
36 | const struct lttng_kernel_probe_location *b); | |
37 | typedef ssize_t (*kernel_probe_location_create_from_payload_cb)( | |
38 | struct lttng_payload_view *view, | |
39 | struct lttng_kernel_probe_location **kernel_probe_location); | |
959e3c66 JR |
40 | typedef unsigned long (*kernel_probe_location_hash_cb)( |
41 | const struct lttng_kernel_probe_location *location); | |
6a751b95 JR |
42 | typedef enum lttng_error_code (*kernel_probe_location_mi_serialize_cb)( |
43 | const struct lttng_kernel_probe_location *location, | |
44 | struct mi_writer *writer); | |
808cb744 JR |
45 | |
46 | struct lttng_kernel_probe_location_comm { | |
47 | /* enum lttng_kernel_probe_location_type */ | |
48 | int8_t type; | |
49 | /* | |
50 | * Payload is composed of, in that order, | |
51 | * - type-specific payload | |
52 | */ | |
53 | char payload[]; | |
54 | } LTTNG_PACKED; | |
55 | ||
56 | struct lttng_kernel_probe_location_symbol_comm { | |
57 | /* Includes the trailing \0. */ | |
58 | uint32_t symbol_len; | |
59 | /* The offset from the symbol. */ | |
60 | uint64_t offset; | |
61 | /* | |
62 | * Payload is composed of, in that order, | |
63 | * - symbol name (with trailing \0). | |
64 | */ | |
65 | char payload[]; | |
66 | } LTTNG_PACKED; | |
67 | ||
68 | struct lttng_kernel_probe_location_address_comm { | |
69 | uint64_t address; | |
70 | } LTTNG_PACKED; | |
71 | ||
72 | /* Common ancestor of all kernel probe locations. */ | |
73 | struct lttng_kernel_probe_location { | |
74 | enum lttng_kernel_probe_location_type type; | |
75 | kernel_probe_location_equal_cb equal; | |
76 | kernel_probe_location_serialize_cb serialize; | |
959e3c66 | 77 | kernel_probe_location_hash_cb hash; |
6a751b95 | 78 | kernel_probe_location_mi_serialize_cb mi_serialize; |
808cb744 JR |
79 | }; |
80 | ||
81 | struct lttng_kernel_probe_location_symbol { | |
82 | struct lttng_kernel_probe_location parent; | |
83 | char *symbol_name; | |
84 | uint64_t offset; | |
85 | }; | |
86 | ||
87 | struct lttng_kernel_probe_location_address { | |
88 | struct lttng_kernel_probe_location parent; | |
89 | uint64_t address; | |
90 | }; | |
91 | ||
808cb744 JR |
92 | int lttng_kernel_probe_location_serialize( |
93 | const struct lttng_kernel_probe_location *location, | |
94 | struct lttng_payload *payload); | |
95 | ||
808cb744 JR |
96 | ssize_t lttng_kernel_probe_location_create_from_payload( |
97 | struct lttng_payload_view *view, | |
98 | struct lttng_kernel_probe_location **probe_location); | |
99 | ||
808cb744 JR |
100 | bool lttng_kernel_probe_location_is_equal( |
101 | const struct lttng_kernel_probe_location *a, | |
102 | const struct lttng_kernel_probe_location *b); | |
103 | ||
077192fd JR |
104 | struct lttng_kernel_probe_location *lttng_kernel_probe_location_copy( |
105 | const struct lttng_kernel_probe_location *location); | |
106 | ||
959e3c66 JR |
107 | unsigned long lttng_kernel_probe_location_hash( |
108 | const struct lttng_kernel_probe_location *location); | |
109 | ||
6a751b95 JR |
110 | enum lttng_error_code lttng_kernel_probe_location_mi_serialize( |
111 | const struct lttng_kernel_probe_location *location, | |
112 | struct mi_writer *writer); | |
113 | ||
740da7d5 SM |
114 | #ifdef __cplusplus |
115 | } | |
116 | #endif | |
117 | ||
808cb744 | 118 | #endif /* LTTNG_KERNEL_PROBE_INTERNAL_H */ |