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#ifndef _UNISTD_H
#define _UNISTD_H
#ifdef __cplusplus
extern "C" {
#endif
#include <features.h>
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
#define SEEK_SET 0
#define SEEK_CUR 1
#define SEEK_END 2
#define NULL 0L
#define __NEED_size_t
#define __NEED_ssize_t
#define __NEED_uid_t
#define __NEED_gid_t
#define __NEED_off_t
#define __NEED_pid_t
#define __NEED_intptr_t
#define __NEED_useconds_t
#include <bits/alltypes.h>
int pipe(int [2]);
int pipe2(int [2], int);
int close(int);
int dup(int);
int dup2(int, int);
int dup3(int, int, int);
off_t lseek(int, off_t, int);
int fsync(int);
int fdatasync(int);
ssize_t read(int, void *, size_t);
ssize_t write(int, const void *, size_t);
ssize_t pread(int, void *, size_t, off_t);
ssize_t pwrite(int, const void *, size_t, off_t);
int chown(const char *, uid_t, gid_t);
int fchown(int, uid_t, gid_t);
int lchown(const char *, uid_t, gid_t);
int fchownat(int, const char *, uid_t, gid_t, int);
int link(const char *, const char *);
int linkat(int, const char *, int, const char *, int);
int symlink(const char *, const char *);
int symlinkat(const char *, int, const char *);
ssize_t readlink(const char *__restrict, char *__restrict, size_t);
ssize_t readlinkat(int, const char *__restrict, char *__restrict, size_t);
int unlink(const char *);
int unlinkat(int, const char *, int);
int rmdir(const char *);
int truncate(const char *, off_t);
int ftruncate(int, off_t);
#define F_OK 0
#define R_OK 4
#define W_OK 2
#define X_OK 1
int access(const char *, int);
int faccessat(int, const char *, int, int);
int chdir(const char *);
int fchdir(int);
char *getcwd(char *, size_t);
unsigned alarm(unsigned);
unsigned sleep(unsigned);
int pause(void);
pid_t fork(void);
int execve(const char *, char *const [], char *const []);
int execv(const char *, char *const []);
int execle(const char *, const char *, ...);
int execl(const char *, const char *, ...);
int execvp(const char *, char *const []);
int execlp(const char *, const char *, ...);
int fexecve(int, char *const [], char *const []);
_Noreturn void _exit(int);
pid_t getpid(void);
pid_t getppid(void);
pid_t getpgrp(void);
pid_t getpgid(pid_t);
int setpgid(pid_t, pid_t);
pid_t setsid(void);
pid_t getsid(pid_t);
char *ttyname(int);
int ttyname_r(int, char *, size_t);
int isatty(int);
pid_t tcgetpgrp(int);
int tcsetpgrp(int, pid_t);
uid_t getuid(void);
uid_t geteuid(void);
gid_t getgid(void);
gid_t getegid(void);
int getgroups(int, gid_t []);
int setuid(uid_t);
int setreuid(uid_t, uid_t);
int seteuid(uid_t);
int setgid(gid_t);
int setregid(gid_t, gid_t);
int setegid(gid_t);
char *getlogin(void);
int getlogin_r(char *, size_t);
int gethostname(char *, size_t);
char *ctermid(char *);
int getopt(int, char * const [], const char *);
extern char *optarg;
extern int optind, opterr, optopt;
long pathconf(const char *, int);
long fpathconf(int, int);
long sysconf(int);
size_t confstr(int, char *, size_t);
#define F_ULOCK 0
#define F_LOCK 1
#define F_TLOCK 2
#define F_TEST 3
#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
int lockf(int, int, off_t);
long gethostid(void);
int nice(int);
void sync(void);
#endif
#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
pid_t setpgrp(void);
char *crypt(const char *, const char *);
void encrypt(char *, int);
void swab(const void *__restrict, void *__restrict, ssize_t);
#endif
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) \
|| (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE+0 < 700)
int usleep(unsigned);
unsigned ualarm(unsigned, unsigned);
#endif
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#define L_SET 0
#define L_INCR 1
#define L_XTND 2
int brk(void *);
void *sbrk(intptr_t);
pid_t vfork(void);
int vhangup(void);
int chroot(const char *);
int getpagesize(void);
int getdtablesize(void);
int sethostname(const char *, size_t);
int getdomainname(char *, size_t);
int setdomainname(const char *, size_t);
int setgroups(size_t, const gid_t *);
char *getpass(const char *);
int daemon(int, int);
void setusershell(void);
void endusershell(void);
char *getusershell(void);
int acct(const char *);
long syscall(long, ...);
#endif
#ifdef _GNU_SOURCE
extern char **environ;
int setresuid(uid_t, uid_t, uid_t);
int setresgid(gid_t, gid_t, gid_t);
int getresuid(uid_t *, uid_t *, uid_t *);
int getresgid(gid_t *, gid_t *, gid_t *);
char *get_current_dir_name(void);
void syncfs(int);
int euidaccess(const char *, int);
int eaccess(const char *, int);
#endif
#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
#define lseek64 lseek
#define pread64 pread
#define pwrite64 pwrite
#define truncate64 truncate
#define ftruncate64 ftruncate
#define lockf64 lockf
#define off64_t off_t
#endif
#define _XOPEN_VERSION 700
#define _XOPEN_UNIX 1
#define _XOPEN_ENH_I18N 1
#define _POSIX_VERSION 200809L
#define _POSIX2_VERSION _POSIX_VERSION
#define _POSIX_ADVISORY_INFO _POSIX_VERSION
#define _POSIX_CHOWN_RESTRICTED 1
#define _POSIX_IPV6 _POSIX_VERSION
#define _POSIX_JOB_CONTROL 1
#define _POSIX_MAPPED_FILES _POSIX_VERSION
#define _POSIX_MEMLOCK _POSIX_VERSION
#define _POSIX_MEMLOCK_RANGE _POSIX_VERSION
#define _POSIX_MEMORY_PROTECTION _POSIX_VERSION
#define _POSIX_MESSAGE_PASSING _POSIX_VERSION
#define _POSIX_FSYNC _POSIX_VERSION
#define _POSIX_NO_TRUNC 1
#define _POSIX_RAW_SOCKETS _POSIX_VERSION
#define _POSIX_REALTIME_SIGNALS _POSIX_VERSION
#define _POSIX_REGEXP 1
#define _POSIX_SAVED_IDS 1
#define _POSIX_SHELL 1
#define _POSIX_SPAWN _POSIX_VERSION
#define _POSIX_VDISABLE 0
#define _POSIX_THREADS _POSIX_VERSION
#define _POSIX_THREAD_PROCESS_SHARED _POSIX_VERSION
#define _POSIX_THREAD_SAFE_FUNCTIONS _POSIX_VERSION
#define _POSIX_THREAD_ATTR_STACKADDR _POSIX_VERSION
#define _POSIX_THREAD_ATTR_STACKSIZE _POSIX_VERSION
#define _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_VERSION
#define _POSIX_THREAD_CPUTIME _POSIX_VERSION
#define _POSIX_TIMERS _POSIX_VERSION
#define _POSIX_TIMEOUTS _POSIX_VERSION
#define _POSIX_MONOTONIC_CLOCK _POSIX_VERSION
#define _POSIX_CPUTIME _POSIX_VERSION
#define _POSIX_CLOCK_SELECTION _POSIX_VERSION
#define _POSIX_BARRIERS _POSIX_VERSION
#define _POSIX_SPIN_LOCKS _POSIX_VERSION
#define _POSIX_READER_WRITER_LOCKS _POSIX_VERSION
#define _POSIX_ASYNCHRONOUS_IO _POSIX_VERSION
#define _POSIX_SEMAPHORES _POSIX_VERSION
#undef _POSIX_SHARED_MEMORY_OBJECTS
#define _POSIX2_C_BIND _POSIX_VERSION
#include <bits/posix.h>
#define _PC_LINK_MAX 0
#define _PC_MAX_CANON 1
#define _PC_MAX_INPUT 2
#define _PC_NAME_MAX 3
#define _PC_PATH_MAX 4
#define _PC_PIPE_BUF 5
#define _PC_CHOWN_RESTRICTED 6
#define _PC_NO_TRUNC 7
#define _PC_VDISABLE 8
#define _PC_SYNC_IO 9
#define _PC_ASYNC_IO 10
#define _PC_PRIO_IO 11
#define _PC_SOCK_MAXBUF 12
#define _PC_FILESIZEBITS 13
#define _PC_REC_INCR_XFER_SIZE 14
#define _PC_REC_MAX_XFER_SIZE 15
#define _PC_REC_MIN_XFER_SIZE 16
#define _PC_REC_XFER_ALIGN 17
#define _PC_ALLOC_SIZE_MIN 18
#define _PC_SYMLINK_MAX 19
#define _PC_2_SYMLINKS 20
#define _SC_ARG_MAX 0
#define _SC_CHILD_MAX 1
#define _SC_CLK_TCK 2
#define _SC_NGROUPS_MAX 3
#define _SC_OPEN_MAX 4
#define _SC_STREAM_MAX 5
#define _SC_TZNAME_MAX 6
#define _SC_JOB_CONTROL 7
#define _SC_SAVED_IDS 8
#define _SC_REALTIME_SIGNALS 9
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