projects / lttng-modules.git / blame
| Commit | Line | Data |
|---|---|---|
| e42c4f49 FD |
1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
| 2 | * | |
| 3 | * lttng-syscalls-entry-table.c | |
| 4 | * | |
| 5 | * LTTng syscall entry probes. | |
| 6 | * | |
| 7 | * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 8 | * Copyright (C) 2021 Francis Deslauriers <francis.deslauriers@efficios.com> | |
| 9 | */ | |
| 10 | ||
| 11 | #include <wrapper/tracepoint.h> | |
| 12 | ||
| 13 | #include "lttng-syscalls.h" | |
| 14 | ||
| 15 | ||
| 16 | #ifdef IA32_NR_syscalls | |
| 17 | #define NR_compat_syscalls IA32_NR_syscalls | |
| 18 | #else | |
| 19 | #define NR_compat_syscalls NR_syscalls | |
| 20 | #endif | |
| 21 | ||
| 22 | /* | |
| 23 | * Create LTTng tracepoint probes. | |
| 24 | */ | |
| 25 | #define LTTNG_PACKAGE_BUILD | |
| 26 | #define CREATE_TRACE_POINTS | |
| 27 | #define TP_MODULE_NOINIT | |
| b03cf820 | 28 | #define TRACE_INCLUDE_PATH instrumentation/syscalls |
| e42c4f49 FD |
29 | |
| 30 | #define PARAMS(args...) args | |
| 31 | ||
| 32 | #define SC_ENTER | |
| 33 | ||
| 34 | #undef sc_exit | |
| 35 | #define sc_exit(...) | |
| 36 | #undef sc_in | |
| 37 | #define sc_in(...) __VA_ARGS__ | |
| 38 | #undef sc_out | |
| 39 | #define sc_out(...) | |
| 40 | #undef sc_inout | |
| 41 | #define sc_inout(...) __VA_ARGS__ | |
| 42 | ||
| 43 | #define LTTNG_TRACEPOINT_TYPE_EXTERN | |
| 44 | ||
| 45 | #include <lttng/events-reset.h> | |
| 46 | ||
| 47 | /* Hijack probe callback for system call enter */ | |
| 48 | #undef TP_PROBE_CB | |
| 49 | #define TP_PROBE_CB(_template) &syscall_entry_event_probe | |
| 50 | #define SC_LTTNG_TRACEPOINT_EVENT(_name, _proto, _args, _fields) \ | |
| 51 | LTTNG_TRACEPOINT_EVENT(syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \ | |
| 52 | PARAMS(_fields)) | |
| 53 | #define SC_LTTNG_TRACEPOINT_EVENT_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ | |
| 54 | LTTNG_TRACEPOINT_EVENT_CODE(syscall_entry_##_name, PARAMS(_proto), PARAMS(_args), \ | |
| 55 | PARAMS(_locvar), PARAMS(_code_pre), \ | |
| 56 | PARAMS(_fields), PARAMS(_code_post)) | |
| 57 | #define SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(_name, _fields) \ | |
| 58 | LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS(syscall_entry_##_name, PARAMS(_fields)) | |
| 59 | #define SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(_template, _name) \ | |
| 60 | LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS(syscall_entry_##_template, syscall_entry_##_name) | |
| 61 | ||
| 62 | #define SC_LTTNG_TRACEPOINT_ENUM(_name, _values) \ | |
| 63 | LTTNG_TRACEPOINT_ENUM(_name, PARAMS(_values)) | |
| 64 | #undef TRACE_SYSTEM | |
| 65 | #define TRACE_SYSTEM syscall_entry_integers | |
| 66 | #define TRACE_INCLUDE_FILE syscalls_integers | |
| b03cf820 | 67 | #include <instrumentation/syscalls/syscalls_integers.h> |
| e42c4f49 FD |
68 | #undef TRACE_INCLUDE_FILE |
| 69 | #undef TRACE_SYSTEM | |
| 70 | #define TRACE_SYSTEM syscall_entry_pointers | |
| 71 | #define TRACE_INCLUDE_FILE syscalls_pointers | |
| b03cf820 | 72 | #include <instrumentation/syscalls/syscalls_pointers.h> |
| e42c4f49 FD |
73 | #undef TRACE_INCLUDE_FILE |
| 74 | #undef TRACE_SYSTEM | |
| 75 | #undef SC_LTTNG_TRACEPOINT_ENUM | |
| 76 | #undef SC_LTTNG_TRACEPOINT_EVENT_CODE | |
| 77 | #undef SC_LTTNG_TRACEPOINT_EVENT | |
| 78 | #undef SC_LTTNG_TRACEPOINT_EVENT_CLASS_NOARGS | |
| 79 | #undef SC_LTTNG_TRACEPOINT_EVENT_INSTANCE_NOARGS | |
| 80 | #undef TP_PROBE_CB | |
| 81 | #undef _TRACE_SYSCALLS_INTEGERS_H | |
| 82 | #undef _TRACE_SYSCALLS_POINTERS_H | |
| 83 | ||
| 84 | #define CREATE_SYSCALL_TABLE | |
| 85 | ||
| 86 | #undef sc_exit | |
| 87 | #define sc_exit(...) | |
| 88 | ||
| 89 | #undef TRACE_SYSCALL_TABLE | |
| 90 | #define TRACE_SYSCALL_TABLE(_template, _name, _nr, _nrargs) \ | |
| 91 | [ _nr ] = { \ | |
| 92 | .event_func = __event_probe__syscall_entry_##_template, \ | |
| 93 | .nrargs = (_nrargs), \ | |
| 94 | .fields = __event_fields___syscall_entry_##_template, \ | |
| 95 | .desc = &__event_desc___syscall_entry_##_name, \ | |
| 96 | }, | |
| 97 | ||
| 98 | /* Event syscall enter tracing table */ | |
| 99 | static const struct trace_syscall_entry _sc_table[] = { | |
| b03cf820 MJ |
100 | #include <instrumentation/syscalls/syscalls_integers.h> |
| 101 | #include <instrumentation/syscalls/syscalls_pointers.h> | |
| e42c4f49 FD |
102 | }; |
| 103 | ||
| 104 | const struct trace_syscall_table sc_table = { | |
| 105 | .table = _sc_table, | |
| 106 | .len = ARRAY_SIZE(_sc_table), | |
| 107 | }; | |
| 108 | ||
| 109 | #undef SC_ENTER | |
| 110 | ||
| 111 | #undef CREATE_SYSCALL_TABLE |