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
16static __attribute__((unused))
17int msleep(unsigned int msecs)
18{
19	struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 };
20
21	if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
22		return (my_timeval.tv_sec * 1000) +
23			(my_timeval.tv_usec / 1000) +
24			!!(my_timeval.tv_usec % 1000);
25	else
26		return 0;
27}
28
29static __attribute__((unused))
30unsigned int sleep(unsigned int seconds)
31{
32	struct timeval my_timeval = { seconds, 0 };
33
34	if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
35		return my_timeval.tv_sec + !!my_timeval.tv_usec;
36	else
37		return 0;
38}
39
40static __attribute__((unused))
41int usleep(unsigned int usecs)
42{
43	struct timeval my_timeval = { usecs / 1000000, usecs % 1000000 };
44
45	return sys_select(0, 0, 0, 0, &my_timeval);
46}
47
48static __attribute__((unused))
49int tcsetpgrp(int fd, pid_t pid)
50{
51	return ioctl(fd, TIOCSPGRP, &pid);
52}
53
54/* make sure to include all global symbols */
55#include "nolibc.h"
56
57#endif /* _NOLIBC_UNISTD_H */