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1 | /* SPDX-License-Identifier: LGPL-2.1 OR MIT */ |
---|---|
2 | /* |
3 | * unistd function definitions for NOLIBC |
4 | * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu> |
5 | */ |
6 | |
7 | #ifndef _NOLIBC_UNISTD_H |
8 | #define _NOLIBC_UNISTD_H |
9 | |
10 | #include "std.h" |
11 | #include "arch.h" |
12 | #include "types.h" |
13 | #include "sys.h" |
14 | |
15 | |
16 | #define STDIN_FILENO 0 |
17 | #define STDOUT_FILENO 1 |
18 | #define STDERR_FILENO 2 |
19 | |
20 | |
21 | static __attribute__((unused)) |
22 | int msleep(unsigned int msecs) |
23 | { |
24 | struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 }; |
25 | |
26 | if (sys_select(0, 0, 0, 0, &my_timeval) < 0) |
27 | return (my_timeval.tv_sec * 1000) + |
28 | (my_timeval.tv_usec / 1000) + |
29 | !!(my_timeval.tv_usec % 1000); |
30 | else |
31 | return 0; |
32 | } |
33 | |
34 | static __attribute__((unused)) |
35 | unsigned int sleep(unsigned int seconds) |
36 | { |
37 | struct timeval my_timeval = { seconds, 0 }; |
38 | |
39 | if (sys_select(0, 0, 0, 0, &my_timeval) < 0) |
40 | return my_timeval.tv_sec + !!my_timeval.tv_usec; |
41 | else |
42 | return 0; |
43 | } |
44 | |
45 | static __attribute__((unused)) |
46 | int usleep(unsigned int usecs) |
47 | { |
48 | struct timeval my_timeval = { usecs / 1000000, usecs % 1000000 }; |
49 | |
50 | return sys_select(0, 0, 0, 0, &my_timeval); |
51 | } |
52 | |
53 | static __attribute__((unused)) |
54 | int tcsetpgrp(int fd, pid_t pid) |
55 | { |
56 | return ioctl(fd, TIOCSPGRP, &pid); |
57 | } |
58 | |
59 | #define __syscall_narg(_0, _1, _2, _3, _4, _5, _6, N, ...) N |
60 | #define _syscall_narg(...) __syscall_narg(__VA_ARGS__, 6, 5, 4, 3, 2, 1, 0) |
61 | #define _syscall(N, ...) __sysret(my_syscall##N(__VA_ARGS__)) |
62 | #define _syscall_n(N, ...) _syscall(N, __VA_ARGS__) |
63 | #define syscall(...) _syscall_n(_syscall_narg(__VA_ARGS__), ##__VA_ARGS__) |
64 | |
65 | /* make sure to include all global symbols */ |
66 | #include "nolibc.h" |
67 | |
68 | #endif /* _NOLIBC_UNISTD_H */ |
69 |
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