| 1 | /* |
| 2 | * Copyright (C) 2014 David Goulet <dgoulet@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-only |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #ifndef LTTNG_SYSCALL_H |
| 9 | #define LTTNG_SYSCALL_H |
| 10 | |
| 11 | #include "trace-kernel.hpp" |
| 12 | |
| 13 | #include <common/hashtable/hashtable.hpp> |
| 14 | |
| 15 | #include <lttng/event.h> |
| 16 | |
| 17 | /* |
| 18 | * Default size of the kernel system call array. With this size, we usually |
| 19 | * reallocate twice considering a 32 bit compat layer also. |
| 20 | */ |
| 21 | #define SYSCALL_TABLE_INIT_SIZE 256 |
| 22 | |
| 23 | /* Maximum length of a syscall name. */ |
| 24 | #define SYSCALL_NAME_LEN 255 |
| 25 | |
| 26 | /* |
| 27 | * Represent a kernel syscall and used when we are populating the internal |
| 28 | * list. |
| 29 | */ |
| 30 | struct syscall { |
| 31 | uint32_t index; |
| 32 | uint32_t bitness; |
| 33 | char name[SYSCALL_NAME_LEN]; |
| 34 | /* Used by the list syscalls command. */ |
| 35 | struct lttng_ht_node_str node; |
| 36 | }; |
| 37 | |
| 38 | /* |
| 39 | * Allocated once when listing all syscalls at boot time. This is an array |
| 40 | * indexed by the syscall index provided in the listing. |
| 41 | */ |
| 42 | extern struct syscall *syscall_table; |
| 43 | |
| 44 | /* Use to list kernel system calls. */ |
| 45 | int syscall_init_table(int tracer_fd); |
| 46 | ssize_t syscall_table_list(struct lttng_event **events); |
| 47 | |
| 48 | #endif /* LTTNG_SYSCALL_H */ |