Moved unit definitions out of scsiconf.h;

Added CONTROL device that only does user-ioctl and nothing else;
Added protection so user-ioctl requires write access;
Clean up scsiconf.h a little. It needs more work.

1 files changed, 14 insertions, 1 deletions

diff --git a/sys/scsi/su.c b/sys/scsi/su.c
index 0211295..dd73c2b 100644
--- a/sys/scsi/su.c
+++ b/sys/scsi/su.c
@@ -44,7 +44,7 @@
  * SUCH DAMAGE.
  *End copyright
  *
- *      $Id: su.c,v 1.3 1995/01/08 15:56:10 dufault Exp $
+ *      $Id: su.c,v 1.4 1995/03/04 20:51:07 dufault Exp $
  *
  * Tabstops 4
  */
@@ -58,6 +58,19 @@
 #include <sys/buf.h>
 #include <sys/systm.h>
 
+/* Build an old style device number (unit encoded in the minor number)
+ * from a base old one (no flag bits) and a full new one
+ * (BUS, LUN, TARG in the minor number, and flag bits).
+ *
+ * OLDDEV has the major number and device unit only.  It was constructed
+ * at attach time and is stored in the scsi_link structure.
+ *
+ * NEWDEV can have whatever in it, but only the old control flags and the
+ * super bit are present.  IT CAN'T HAVE ANY UNIT INFORMATION or you'll
+ * wind up with the wrong unit.
+ */
+#define OLD_DEV(NEWDEV, OLDDEV) ((OLDDEV) | ((NEWDEV) & 0x080000FF))
+
 /* XXX: These are taken from, and perhaps belong in, conf.c
  */
 #define nxopen		(d_open_t *)enxio