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1e10b8534f
This is used in various selftests and will be handy when integrating those with nolibc. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: Willy Tarreau <w@1wt.eu> Link: https://lore.kernel.org/r/20250428-nolibc-misc-v2-7-3c043eeab06c@linutronix.de Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
90 lines
1.8 KiB
C
90 lines
1.8 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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/* make sure to include all global symbols */
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#include "nolibc.h"
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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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#define F_OK 0
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#define X_OK 1
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#define W_OK 2
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#define R_OK 4
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/*
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* int access(const char *path, int amode);
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* int faccessat(int fd, const char *path, int amode, int flag);
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*/
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static __attribute__((unused))
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int sys_faccessat(int fd, const char *path, int amode, int flag)
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{
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return my_syscall4(__NR_faccessat, fd, path, amode, flag);
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}
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static __attribute__((unused))
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int faccessat(int fd, const char *path, int amode, int flag)
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{
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return __sysret(sys_faccessat(fd, path, amode, flag));
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}
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static __attribute__((unused))
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int access(const char *path, int amode)
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{
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return faccessat(AT_FDCWD, path, amode, 0);
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}
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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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#endif /* _NOLIBC_UNISTD_H */
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