55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
#ifndef _UNISTD_H
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#define _UNISTD_H
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#include <sys/types.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 R_OK 4
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#define W_OK 2
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#define X_OK 1
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#define F_OK 0
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#define SEEK_SET 0
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#define SEEK_CUR 1
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#define SEEK_END 2
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ssize_t read(int fd, void *buf, size_t count);
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ssize_t write(int fd, const void *buf, size_t count);
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int close(int fd);
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int pipe(int pipefd[2]);
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int dup2(int oldfd, int newfd);
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pid_t fork(void);
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int execv(const char *path, char *const argv[]);
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int execve(const char *pathname, char *const argv[], char *const envp[]);
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void _exit(int status);
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unsigned int sleep(unsigned int seconds);
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int chdir(const char *path);
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char *getcwd(char *buf, size_t size);
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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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int access(const char *pathname, int mode);
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int isatty(int fd);
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int unlink(const char *pathname);
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off_t lseek(int fd, off_t offset, int whence);
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int link(const char *oldpath, const char *newpath);
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int rmdir(const char *pathname);
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int getpid(void);
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int getppid(void);
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int setuid(uid_t uid);
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int setgid(gid_t gid);
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int setpgid(pid_t pid, pid_t pgid);
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pid_t getpgrp(void);
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pid_t tcgetpgrp(int fd);
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int tcsetpgrp(int fd, pid_t pgrp);
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unsigned int alarm(unsigned int seconds);
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int seteuid(uid_t euid);
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int setegid(gid_t egid);
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ssize_t readlink(const char *pathname, char *buf, size_t objsiz);
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#endif
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