| /* access for MMIXware. |
| |
| Copyright (C) 2001, 2007 Hans-Peter Nilsson |
| |
| Permission to use, copy, modify, and distribute this software is |
| freely granted, provided that the above copyright notice, this notice |
| and the following disclaimer are preserved with no changes. |
| |
| THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| PURPOSE. */ |
| |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <unistd.h> |
| #include "sys/syscall.h" |
| #include <errno.h> |
| |
| int |
| access (const char *fn, int flags) |
| { |
| /* Ugh. We don't have stat (), so we can't copy the other |
| implementations. Opening a directory as a file usually works, so |
| let's try and open it and use the openability, regardless of what |
| kind of test or file it is. */ |
| int fd; |
| |
| /* We'll just assume that if we can open the file for reading, then it's |
| Z-able, no matter what Z was. */ |
| fd = _open (fn, O_RDONLY); |
| if (fd >= 0) |
| { |
| /* Yes, this was readable. As in other simulator access functions, |
| we always return success in this case (though the others check |
| for directory access). */ |
| return _close (fd); |
| } |
| |
| errno = EACCES; |
| return -1; |
| } |