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#ifndef __UNISTD_H
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#define __UNISTD_H
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#if !defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
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#error "This header file is not defined in pure ANSI"
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#endif
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#pragma lib "/$M/lib/ape/libap.a"
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#ifdef _POSIX_C_SOURCE
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#define _POSIX_VERSION 200112L
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#else
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#define _POSIX_VERSION 199309L
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#endif
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#define _POSIX_ASYNC_IO -1
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#define _POSIX_CHOWN_RESTRICTED 1
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#define _POSIX_NO_TRUNC 1
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#define _POSIX_PRIO_IO -1
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#define _POSIX_SYNC_IO -1
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#define _POSIX_VDISABLE -1
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#ifndef _SIZE_T
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#define _SIZE_T
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typedef unsigned long size_t;
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#endif
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#ifndef _SSIZE_T
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#define _SSIZE_T
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typedef long ssize_t;
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#endif
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#ifndef NULL
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#ifndef NULL
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#ifdef __cplusplus
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#define NULL 0
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#else
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#define NULL ((void*)0)
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#endif
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#endif
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#endif
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/* access */
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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 /* test for existence */
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/* lockf */
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#define F_ULOCK 0 /* unlock a previously locked region */
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#define F_LOCK 1 /* lock a region for exclusive use */
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#define F_TLOCK 2 /* test and lock a region for exclusive use */
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#define F_TEST 3 /* test a region for a previous lock */
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/* lseek */
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#ifndef SEEK_SET /* also defined in stdio.h */
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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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#endif
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/* sysconf argument */
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#define _SC_ARG_MAX 1 /* max chars in args to exec */
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#define _SC_CHILD_MAX 2 /* max child process per process */
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#define _SC_CLK_TCK 3 /* number of clock() units per second */
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#define _SC_NGROUPS_MAX 4 /* max supplementary groups per process */
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#define _SC_OPEN_MAX 5
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#define _SC_STREAM_MAX 6
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#define _SC_TZNAME_MAX 7
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#define _SC_JOB_CONTROL 8 /* posix job control */
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#define _SC_SAVED_IDS 9 /* saved suid/sgid per process */
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#define _SC_VERSION 10 /* this version */
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#define _SC_LOGIN_NAME_MAX 11 /* max length of a login name */
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/* pathconf argument */
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#define _PC_LINK_MAX 1
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#define _PC_MAX_CANON 2
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#define _PC_MAX_INPUT 3
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#define _PC_NAME_MAX 4
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#define _PC_PATH_MAX 5
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#define _PC_PIPE_BUF 6
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#define _PC_CHOWN_RESTRICTED 7
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#define _PC_NO_TRUNC 8
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#define _PC_VDISABLE 9
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/* standard filenos */
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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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#ifdef __cplusplus
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extern "C" {
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#endif
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/* process primitives */
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extern int execl(const char *, const char *, ...);
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extern int execv(const char *, const char **);
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extern int execle(const char *, const char *, const char *, ...);
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extern int execve(const char *, const char **, const char **);
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extern int execlp(const char *, const char *, ...);
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extern int execvp(const char *, const char **);
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extern void _exit(int);
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extern unsigned int alarm(unsigned int);
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extern int pause(void);
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extern unsigned int sleep(unsigned int);
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#ifdef __TYPES_H
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extern pid_t fork(void);
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#endif
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/* process environment */
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extern char *getlogin(void);
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extern char *cuserid(char *);
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extern char *ttyname(int);
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extern int isatty(int);
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extern long sysconf(int);
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#ifdef __TYPES_H
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extern pid_t getpid(void);
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extern pid_t getppid(void);
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extern uid_t getuid(void);
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extern uid_t geteuid(void);
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extern gid_t getgid(void);
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extern gid_t getegid(void);
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extern int setuid(uid_t);
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extern int setgid(gid_t);
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extern int getgroups(int, gid_t *);
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extern pid_t getpgrp(void);
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extern int setpgid(pid_t, pid_t);
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extern pid_t setsid(void);
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#endif
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/* files and directories */
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extern int chdir(const char *);
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extern int link(const char *, const char *);
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extern char *getcwd(char *, size_t);
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extern int unlink(const char *);
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extern int rmdir(const char *);
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extern int rename(const char *, const char *);
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extern int access(const char *, int);
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extern long pathconf(const char *, int);
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extern long fpathconf(int, int);
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#ifdef __TYPES_H
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extern int chown(const char *, uid_t, gid_t);
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#endif
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/* input and output primitives */
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extern int pipe(int *);
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extern int dup(int);
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extern int dup2(int, int);
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extern int close(int);
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extern ssize_t read(int, void *, size_t);
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extern ssize_t write(int, const void *, size_t);
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#ifdef __TYPES_H
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extern int ftruncate(int, off_t);
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extern off_t lseek(int, off_t, int);
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#endif
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/* device- and class-specific functions */
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#ifdef __TYPES_H
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extern pid_t tcgetpgrp(int);
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extern int tcsetpgrp(int, pid_t);
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#endif
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#ifdef _REENTRANT_SOURCE
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extern char *getlogin_r(char *, int);
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#endif
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/* berkeley specific functions */
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#ifdef _BSD_EXTENSION
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#include <bsd.h>
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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