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#ifndef __UNISTD_H
#define __UNISTD_H
#include <stddef.h>
#ifndef NULL
#define NULL ((void *)0)
#endif
#define _POSIX_VERSION 202405L
#define _POSIX2_VERSION _POSIX_VERSION
#define _XOPEN_VERSION 800
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
#define F_OK 0
#define X_OK 1
#define W_OK 2
#define R_OK 4
typedef __SIZE_TYPE__ size_t;
typedef __INT64_TYPE__ ssize_t;
typedef __UINT32_TYPE__ uid_t;
typedef __UINT32_TYPE__ gid_t;
typedef __INT64_TYPE__ off_t;
typedef __INT64_TYPE__ pid_t;
typedef __INTPTR_TYPE__ intptr_t;
extern char *optarg;
extern int opterr, optind, optopt;
int access(const char *, int);
unsigned alarm(unsigned);
int chdir(const char *);
int chown(const char *, uid_t, gid_t);
int chroot(const char *);
int close(int);
// TODO:
// size_t confstr(int, char *, size_t);
// char *crypt(const char *, const char *);
int dup(int);
int dup2(int, int);
int dup3(int, int, int);
_Noreturn void _exit(int);
// TODO:
// void encrypt(char [64], int);
int execl(const char *, const char *, ...);
// int execle(const char *, const char *, ...);
int execlp(const char *, const char *, ...);
int execv(const char *, char *const[]);
int execve(const char *, char *const[], char *const[]);
int execvp(const char *, char *const[]);
int faccessat(int, const char *, int, int);
int fchdir(int);
int fchown(int, uid_t, gid_t);
int fchownat(int, const char *, uid_t, gid_t, int);
int fdatasync(int);
// TODO:
// int fexecve(int, char *const[], char *const[]);
pid_t _Fork(void);
pid_t fork(void);
// long fpathconf(int, int);
int fsync(int);
int ftruncate(int, off_t);
char *getcwd(char *, size_t);
gid_t getegid(void);
int getentropy(void *, size_t);
uid_t geteuid(void);
gid_t getgid(void);
int getgroups(int, gid_t[]);
long gethostid(void);
int gethostname(char *, size_t);
char *getlogin(void);
int getlogin_r(char *, size_t);
int getopt(int, char *const[], const char *);
pid_t getpgid(pid_t);
pid_t getpgrp(void);
pid_t getpid(void);
pid_t getppid(void);
int getresgid(gid_t *restrict, gid_t *restrict, gid_t *restrict);
int getresuid(uid_t *restrict, uid_t *restrict, uid_t *restrict);
pid_t getsid(pid_t);
uid_t getuid(void);
int isatty(int);
int lchown(const char *, uid_t, gid_t);
int link(const char *, const char *);
int linkat(int, const char *, int, const char *, int);
int lockf(int, int, off_t);
off_t lseek(int, off_t, int);
int nice(int);
// TODO:
// long pathconf(const char *, int);
int pause(void);
int pipe(int[2]);
int pipe2(int[2], int);
int posix_close(int, int);
ssize_t pread(int, void *, size_t, off_t);
ssize_t pwrite(int, const void *, size_t, off_t);
ssize_t read(int, void *, size_t);
ssize_t readlink(const char *restrict, char *restrict, size_t);
ssize_t readlinkat(int, const char *restrict, char *restrict, size_t);
int rmdir(const char *);
int setegid(gid_t);
int seteuid(uid_t);
int setgid(gid_t);
int setpgid(pid_t, pid_t);
int setregid(gid_t, gid_t);
int setresgid(gid_t, gid_t, gid_t);
int setresuid(uid_t, uid_t, uid_t);
int setreuid(uid_t, uid_t);
pid_t setsid(void);
int setuid(uid_t);
unsigned sleep(unsigned);
void swab(const void *restrict, void *restrict, ssize_t);
int symlink(const char *, const char *);
int symlinkat(const char *, int, const char *);
void sync(void);
// TODO:
// long sysconf(int);
// pid_t tcgetpgrp(int);
// int tcsetpgrp(int, pid_t);
int truncate(const char *, off_t);
// TODO:
// char *ttyname(int);
// int ttyname_r(int, char *, size_t);
int unlink(const char *);
int unlinkat(int, const char *, int);
ssize_t write(int, const void *, size_t);
#endif
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