add provision for short symbolic links

[unix-history] / usr / src / sys / ufs / ffs / dinode.h

diff --git a/usr/src/sys/ufs/ffs/dinode.h b/usr/src/sys/ufs/ffs/dinode.h
index 8d2a400..d1c8347 100644 (file)
--- a/usr/src/sys/ufs/ffs/dinode.h
+++ b/usr/src/sys/ufs/ffs/dinode.h
@@ -4,7 +4,7 @@
  *
  * %sccs.include.redist.c%
  *
  *
  * %sccs.include.redist.c%
  *

- *     @(#)dinode.h    7.16 (Berkeley) %G%
+ *     @(#)dinode.h    7.17 (Berkeley) %G%

  */
 
 /*
  */
 
 /*


@@ -42,7 +42,16 @@ struct dinode {
        long            di_spare[2];    /* 120: reserved, currently unused */
 };
 
        long            di_spare[2];    /* 120: reserved, currently unused */
 };
 

+/*
+ * The di_db fields may be overlaid with other information for
+ * file types that do not have associated disk storage. Block
+ * and character devices overlay the first data block with their
+ * dev_t value. Short symbolic links place their path in the
+ * di_db area.
+ */

 #define        di_rdev         di_db[0]
 #define        di_rdev         di_db[0]

+#define di_shortlink   di_db
+#define        MAXSYMLINKLEN   (NDADDR * sizeof(daddr_t))

 
 /* file modes */
 #define        IFMT            0170000         /* mask of file type */
 
 /* file modes */
 #define        IFMT            0170000         /* mask of file type */