69 lines · c
1/* SPDX-License-Identifier: LGPL-2.1 OR MIT */2/*3 * unistd function definitions for NOLIBC4 * Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>5 */6 7#ifndef _NOLIBC_UNISTD_H8#define _NOLIBC_UNISTD_H9 10#include "std.h"11#include "arch.h"12#include "types.h"13#include "sys.h"14 15 16#define STDIN_FILENO 017#define STDOUT_FILENO 118#define STDERR_FILENO 219 20 21static __attribute__((unused))22int 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 else31 return 0;32}33 34static __attribute__((unused))35unsigned 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 else42 return 0;43}44 45static __attribute__((unused))46int 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 53static __attribute__((unused))54int 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, ...) N60#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