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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> | |
14 | #include <stdbool.h> | |
15 | #include <stdint.h> | |
16 | #include <sys/types.h> | |
17 | ||
18 | struct lttng_payload; | |
19 | struct lttng_payload_view; | |
20 | struct lttng_dynamic_buffer; | |
21 | ||
22 | typedef bool (*kernel_probe_location_equal_cb)( | |
23 | const struct lttng_kernel_probe_location *a, | |
24 | const struct lttng_kernel_probe_location *b); | |
25 | typedef int (*kernel_probe_location_serialize_cb)( | |
26 | const struct lttng_kernel_probe_location *kernel_probe_location, | |
27 | struct lttng_payload *payload); | |
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 ssize_t (*kernel_probe_location_create_from_payload_cb)( | |
32 | struct lttng_payload_view *view, | |
33 | struct lttng_kernel_probe_location **kernel_probe_location); | |
34 | ||
35 | struct lttng_kernel_probe_location_comm { | |
36 | /* enum lttng_kernel_probe_location_type */ | |
37 | int8_t type; | |
38 | /* | |
39 | * Payload is composed of, in that order, | |
40 | * - type-specific payload | |
41 | */ | |
42 | char payload[]; | |
43 | } LTTNG_PACKED; | |
44 | ||
45 | struct lttng_kernel_probe_location_symbol_comm { | |
46 | /* Includes the trailing \0. */ | |
47 | uint32_t symbol_len; | |
48 | /* The offset from the symbol. */ | |
49 | uint64_t offset; | |
50 | /* | |
51 | * Payload is composed of, in that order, | |
52 | * - symbol name (with trailing \0). | |
53 | */ | |
54 | char payload[]; | |
55 | } LTTNG_PACKED; | |
56 | ||
57 | struct lttng_kernel_probe_location_address_comm { | |
58 | uint64_t address; | |
59 | } LTTNG_PACKED; | |
60 | ||
61 | /* Common ancestor of all kernel probe locations. */ | |
62 | struct lttng_kernel_probe_location { | |
63 | enum lttng_kernel_probe_location_type type; | |
64 | kernel_probe_location_equal_cb equal; | |
65 | kernel_probe_location_serialize_cb serialize; | |
66 | }; | |
67 | ||
68 | struct lttng_kernel_probe_location_symbol { | |
69 | struct lttng_kernel_probe_location parent; | |
70 | char *symbol_name; | |
71 | uint64_t offset; | |
72 | }; | |
73 | ||
74 | struct lttng_kernel_probe_location_address { | |
75 | struct lttng_kernel_probe_location parent; | |
76 | uint64_t address; | |
77 | }; | |
78 | ||
79 | LTTNG_HIDDEN | |
80 | int lttng_kernel_probe_location_serialize( | |
81 | const struct lttng_kernel_probe_location *location, | |
82 | struct lttng_payload *payload); | |
83 | ||
84 | LTTNG_HIDDEN | |
85 | ssize_t lttng_kernel_probe_location_create_from_payload( | |
86 | struct lttng_payload_view *view, | |
87 | struct lttng_kernel_probe_location **probe_location); | |
88 | ||
89 | LTTNG_HIDDEN | |
90 | bool lttng_kernel_probe_location_is_equal( | |
91 | const struct lttng_kernel_probe_location *a, | |
92 | const struct lttng_kernel_probe_location *b); | |
93 | ||
077192fd JR |
94 | LTTNG_HIDDEN |
95 | struct lttng_kernel_probe_location *lttng_kernel_probe_location_copy( | |
96 | const struct lttng_kernel_probe_location *location); | |
97 | ||
808cb744 | 98 | #endif /* LTTNG_KERNEL_PROBE_INTERNAL_H */ |