filehandle         71 user/include/sys/stat.h int fstat(int filehandle, struct stat *buf);
filehandle        128 user/include/unistd.h int read(int filehandle, void *buf, size_t size);
filehandle        129 user/include/unistd.h int write(int filehandle, const void *buf, size_t size);
filehandle        130 user/include/unistd.h int close(int filehandle);
filehandle        138 user/include/unistd.h int ioctl(int filehandle, int code, void *buf);
filehandle        139 user/include/unistd.h off_t lseek(int filehandle, off_t pos, int code);
filehandle        140 user/include/unistd.h int fsync(int filehandle);
filehandle        141 user/include/unistd.h int ftruncate(int filehandle, off_t size);
filehandle        150 user/include/unistd.h int getdirentry(int filehandle, char *buf, size_t buflen);
filehandle        153 user/include/unistd.h int dup2(int filehandle, int newhandle);