+int gethostname(char *name, size_t len);
+int gettimeofday(struct timeval *tv, struct timezone *tz);
+int * __errno_location(void);
+unsigned int sleep(unsigned int seconds);
+int rand(void);
+void srand(unsigned int seed);
+long int random(void);
+void srandom(unsigned int seed);
+uid_t geteuid(void);
+uid_t getuid(void);
+pid_t getpid(void);
+int stat(const char *path, struct stat *buf);
+int stat64(const char *path, struct stat *buf);
+int fstat(int fd, struct stat *buf);
+int fstat64(int fd, struct stat *buf);
+int open(const char *pathname, int flags, mode_t mode);
+int open64(const char *pathname, int flags, mode_t mode);
+off_t lseek(int fd, off_t offset, int whence);
+off64_t lseek64(int fd, off64_t offset, int whence);
+ssize_t read(int fildes, void *buf, size_t nbyte);
+int close(int fd);
+void *calloc(size_t nmemb, size_t size);
+void perror(const char *s);
+void exit(int status);
+int ioctl(int d, int request, ...);
+size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
+long sysconf(int name);
+int getpagesize(void);
+void qsort(void *base, size_t nmemb, size_t size,
+ int(*compar)(const void *, const void *));
+ssize_t write(int fd, const void *buf, size_t count);
+int fallocate(int fd, int mode, off_t offset, off_t len);
+unsigned long long int strtoull(const char *nptr, char **endptr, int base);
+int fsync(int fd);
+int __open64_2(const char *pathname, int flags);
+int __xstat64(int vers, const char *name, struct stat64 *buf);
+int uname(struct utsname *buf);
+int getrlimit(int resource, struct rlimit *rlim);
+int setrlimit(int resource, const struct rlimit *rlim);
+int __fxstat64(int vers, int fd, struct stat64 *buf);