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- /****************************************************************************
- *
- * $Source: /unixb/home/unixlib/source/unixlib37/src/unix/c/RCS/access,v $
- * $Date: 1996/10/30 21:59:01 $
- * $Revision: 1.2 $
- * $State: Rel $
- * $Author: unixlib $
- *
- * $Log: access,v $
- * Revision 1.2 1996/10/30 21:59:01 unixlib
- * Massive changes made by Nick Burret and Peter Burwood.
- *
- * Revision 1.1 1996/04/19 21:35:27 simon
- * Initial revision
- *
- ***************************************************************************/
-
- static const char rcs_id[] = "$Id: access,v 1.2 1996/10/30 21:59:01 unixlib Rel $";
-
- #include <errno.h>
-
- #include <unistd.h>
- #include <sys/types.h>
- #include <sys/os.h>
-
- int
- access (const char *file, int mode)
- {
- int r[6];
- _kernel_oserror *e;
- int i;
- char *f;
-
- f = __uname ((char *)file, 0);
-
- if (e = os_file (0x05, f, r))
- {
- __seterr (e);
- return (-1);
- }
- switch (r[0])
- {
- default:
- errno = ENOENT;
- return (-1);
- case 1:
-
- i = ((r[5] & 0040) >> 4) | ((r[5] & 0020) >> 2) |
- ((r[5] & 0002)) | ((r[5] & 0001) << 2);
-
- if (i & 0002)
- i |= 0001;
-
- if ((i & mode) != mode)
- {
- errno = EPERM;
- return (-1);
- }
-
- return (0);
-
- case 2:
- case 3:
- return (0);
- /* DIR / Image */
- }
- }
-