78 строки
2.1 KiB
C
78 строки
2.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* unistd function definitions for NOLIBC
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* Copyright (C) 2017-2022 Willy Tarreau <w@1wt.eu>
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*/
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#ifndef _NOLIBC_UNISTD_H
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#define _NOLIBC_UNISTD_H
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#include "std.h"
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#include "arch.h"
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#include "types.h"
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#include "sys.h"
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#define STDIN_FILENO 0
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#define STDOUT_FILENO 1
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#define STDERR_FILENO 2
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static __attribute__((unused))
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int msleep(unsigned int msecs)
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{
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struct timeval my_timeval = { msecs / 1000, (msecs % 1000) * 1000 };
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if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
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return (my_timeval.tv_sec * 1000) +
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(my_timeval.tv_usec / 1000) +
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!!(my_timeval.tv_usec % 1000);
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else
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return 0;
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}
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static __attribute__((unused))
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unsigned int sleep(unsigned int seconds)
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{
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struct timeval my_timeval = { seconds, 0 };
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if (sys_select(0, 0, 0, 0, &my_timeval) < 0)
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return my_timeval.tv_sec + !!my_timeval.tv_usec;
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else
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return 0;
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}
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static __attribute__((unused))
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int usleep(unsigned int usecs)
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{
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struct timeval my_timeval = { usecs / 1000000, usecs % 1000000 };
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return sys_select(0, 0, 0, 0, &my_timeval);
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}
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static __attribute__((unused))
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int tcsetpgrp(int fd, pid_t pid)
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{
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return ioctl(fd, TIOCSPGRP, &pid);
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}
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#define _syscall(N, ...) \
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({ \
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long _ret = my_syscall##N(__VA_ARGS__); \
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if (_ret < 0) { \
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SET_ERRNO(-_ret); \
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_ret = -1; \
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} \
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_ret; \
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})
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#define _syscall_narg(...) __syscall_narg(__VA_ARGS__, 6, 5, 4, 3, 2, 1, 0)
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#define __syscall_narg(_0, _1, _2, _3, _4, _5, _6, N, ...) N
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#define _syscall_n(N, ...) _syscall(N, __VA_ARGS__)
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#define syscall(...) _syscall_n(_syscall_narg(__VA_ARGS__), ##__VA_ARGS__)
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/* make sure to include all global symbols */
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#include "nolibc.h"
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#endif /* _NOLIBC_UNISTD_H */
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