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unistd.h
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C/C++ Source or Header
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1993-01-20
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5KB
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172 lines
/* Copyright 1993 NeXT Computer, Inc. - WMG */
#ifndef _UNISTD_H
#define _UNISTD_H
#include <standards.h>
#ifdef _POSIX_SOURCE
/* Execution-time implementation options. */
#define _POSIX_VDISABLE '\377'
#endif /* _POSIX_SOURCE */
#if defined(_POSIX_SOURCE) && !defined(POSIX_KERN)
#include <sys/types.h> /* for size_t and ssize_t */
#include <stddef.h> /* for NULL */
#include <sys/fcntl.h> /* for F_OK, X_OK, W_OK and R_OK */
/* Initial values of file descriptors for
* stdin, stdout and stderr
*/
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
/* Symbolic constants for lseek() */
#ifndef SEEK_SET
#define SEEK_SET 0
#endif /* SEEK_SET */
#ifndef SEEK_CUR
#define SEEK_CUR 1
#endif /* SEEK_CUR */
#ifndef SEEK_END
#define SEEK_END 2
#endif /* SEEK_END */
/* Compile-time implementation options */
#define _POSIX_JOB_CONTROL 1
#define _POSIX_SAVED_IDS 1
#define _POSIX_VERSION 199009L
/* Execution-time implementation options. */
#define _POSIX_CHOWN_RESTRICTED 1
#define _POSIX_NO_TRUNC 1
/* Values for sysconf() */
#define _SC_ARG_MAX 0
#define _SC_CHILD_MAX 1
#define _SC_CLK_TCK 2
#define _SC_JOB_CONTROL 3
#define _SC_NGROUPS_MAX 4
#define _SC_OPEN_MAX 5
#define _SC_SAVED_IDS 6
#define _SC_STREAM_MAX 7
#define _SC_TZNAME_MAX 8
#define _SC_VERSION 9
/* Values for pathconf() */
#define _PC_CHOWN_RESTRICTED 0
#define _PC_LINK_MAX 1
#define _PC_MAX_CANON 2
#define _PC_MAX_INPUT 3
#define _PC_NAME_MAX 4
#define _PC_NO_TRUNC 5
#define _PC_PATH_MAX 6
#define _PC_PIPE_BUF 7
#define _PC_VDISABLE 8
#ifdef __STDC__
extern void _exit(int status);
extern int access(const char *path, int amode);
extern unsigned int alarm(unsigned int seconds);
extern int chdir(const char *path);
extern int chown(const char *path, uid_t owner,
gid_t group);
extern int close(int fildes);
extern char *ctermid(char *s);
extern int dup(int fildes);
extern int dup2(int fildes, int fildes2);
extern int execl(const char *path,
const char *arg0, ...);
extern int execle(const char *path,
const char *arg0, ...);
extern int execlp(const char *file,
const char *arg0, ...);
extern int execv(const char *path,
char *const argv[]);
extern int execve(const char *path,
char *const argv[], char *const envp[]);
extern int execvp(const char *file, char *const argv[]);
extern pid_t fork(void);
extern long fpathconf(int fildes, int name);
extern char *getcwd(char *buf, size_t size);
extern gid_t getegid(void);
extern uid_t geteuid(void);
extern gid_t getgid(void);
extern int getgroups(int gidsetsize, gid_t *grouplist);
extern char *getlogin(void);
extern pid_t getpgrp(void);
extern pid_t getpid(void);
extern pid_t getppid(void);
extern uid_t getuid(void);
extern int isatty(int fildes);
extern int link(const char *path1, const char *path2);
extern off_t lseek(int fildes, off_t offset, int whence);
extern long pathconf(const char *path, int name);
extern int pause(void);
extern int pipe(int fildes[2]);
extern ssize_t read(int fildes, void *buf, size_t nbyte);
extern int rmdir(const char *path);
extern int setgid(gid_t gid);
extern int setpgid(pid_t pid, pid_t pgid);
extern pid_t setsid(void);
extern int setuid(uid_t uid);
extern unsigned int sleep(unsigned int seconds);
extern long sysconf(int name);
extern pid_t tcgetpgrp(int fildes);
extern int tcsetpgrp(int fildes, pid_t pgrp_id);
extern char *ttyname(int fildes);
extern int unlink(const char *path);
extern ssize_t write(int fildes, const void *buf,
size_t nbyte);
#else
extern void _exit();
extern int access();
extern unsigned int alarm();
extern int chdir();
extern int chown();
extern int close();
extern char *ctermid();
extern int dup();
extern int dup2();
extern int execl();
extern int execle();
extern int execlp();
extern int execv();
extern int execve();
extern int execvp();
extern pid_t fork();
extern long fpathconf();
extern char *getcwd();
extern gid_t getegid();
extern uid_t geteuid();
extern gid_t getgid();
extern int getgroups();
extern char *getlogin();
extern pid_t getpgrp();
extern pid_t getpid();
extern pid_t getppid();
extern uid_t getuid();
extern int isatty();
extern int link();
extern off_t lseek();
extern long pathconf();
extern int pause();
extern int pipe();
extern ssize_t read();
extern int rmdir();
extern int setgid();
extern int setpgid();
extern pid_t setsid();
extern int setuid();
extern unsigned int sleep();
extern long sysconf();
extern pid_t tcgetpgrp();
extern int tcsetpgrp();
extern char *ttyname();
extern int unlink();
extern ssize_t write();
#endif /* __STDC__ */
#endif /* _POSIX_SOURCE && !POSIX_KERN */
#endif /* _UNISTD_H */