extern "C" {
#endif
+#include <features.h>
+
#define STDIN_FILENO 0
#define STDOUT_FILENO 1
#define STDERR_FILENO 2
#define SEEK_CUR 1
#define SEEK_END 2
-#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
-#define L_SET 0
-#define L_INCR 1
-#define L_XTND 2
-#endif
-
#undef NULL
#ifdef __cplusplus
#define NULL 0
#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);
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 *, char *, size_t);
-ssize_t readlinkat(int, const char *, char *, size_t);
+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 execvp(const char *, char *const []);
int execlp(const char *, const char *, ...);
int fexecve(int, char *const [], char *const []);
-void _exit(int);
+_Noreturn void _exit(int);
pid_t getpid(void);
pid_t getppid(void);
#define F_TLOCK 2
#define F_TEST 3
-#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
int lockf(int, int, off_t);
-pid_t setpgrp(void);
-char *crypt(const char *, const char *);
-void encrypt(char *, int);
-void swab(const void *, void *, ssize_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 usleep(unsigned);
-unsigned ualarm(unsigned, unsigned);
+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 *);
#endif
#ifdef _GNU_SOURCE
-pid_t forkall(void);
+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);
-int daemon(int, int);
-int getdomainname(char *, size_t);
-int getdtablesize(void);
-void setusershell(void);
-void endusershell(void);
-char *getusershell(void);
+void syncfs(int);
#endif
-#ifdef _LARGEFILE64_SOURCE
+#if defined(_LARGEFILE64_SOURCE) || defined(_GNU_SOURCE)
#define lseek64 lseek
#define pread64 pread
#define pwrite64 pwrite
#define _POSIX_MEMLOCK _POSIX_VERSION
#define _POSIX_MEMLOCK_RANGE _POSIX_VERSION
#define _POSIX_MEMORY_PROTECTION _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_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_TIMERS _POSIX_VERSION
#define _POSIX_TIMEOUTS _POSIX_VERSION
#define _POSIX_MONOTONIC_CLOCK _POSIX_VERSION