58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2020-12-16 Meco Man add usleep
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* 2021-09-11 Meco Man move functions from dfs_posix.h to unistd.h
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*/
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#ifndef __SYS_UNISTD_H__
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#define __SYS_UNISTD_H__
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#include <stddef.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define STDIN_FILENO 0 /* standard input file descriptor */
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#define STDOUT_FILENO 1 /* standard output file descriptor */
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#define STDERR_FILENO 2 /* standard error file descriptor */
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unsigned alarm(unsigned __secs);
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ssize_t read(int fd, void *buf, size_t len);
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ssize_t write(int fd, const void *buf, size_t len);
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off_t lseek(int fd, off_t offset, int whence);
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int pause(void);
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int fsync(int fildes);
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long sysconf(int __name);
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int unlink(const char *pathname);
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int close(int d);
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int ftruncate(int fd, off_t length);
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int rmdir(const char *path);
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int chdir(const char *path);
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char *getcwd(char *buf, size_t size);
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int access(const char *path, int amode);
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int pipe(int fildes[2]);
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int isatty(int fd);
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char *ttyname(int desc);
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unsigned int sleep(unsigned int seconds);
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int usleep(useconds_t usec);
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pid_t gettid(void);
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pid_t getpid(void);
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pid_t getppid(void);
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uid_t getuid(void);
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uid_t geteuid(void);
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gid_t getgid(void);
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gid_t getegid(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_UNISTD_H */
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