extern int
full_pwrite(struct filedes *fd, const void *buf, size_t count, off_t offset);
-extern ssize_t
-raw_pread(struct filedes *fd, void *buf, size_t nbyte, off_t offset);
-
-extern ssize_t
-raw_pwrite(struct filedes *fd, const void *buf, size_t count, off_t offset);
-
#ifndef __WIN32__
# define O_BINARY 0
#endif