Fixed some confusion between the size of a logical block and the size of a

device block which was stopping symbolic links working.

cd9660_readdir was incorrectly casting a pointer to the d_namlen field of a
struct dirent to a (u_short*) which caused the directory entries "." and ".."
to read incorrectly.

Submitted by:	dfr

3 files changed, 11 insertions, 6 deletions

diff --git a/sys/isofs/cd9660/cd9660_rrip.c b/sys/isofs/cd9660/cd9660_rrip.c
index 6d73374..78410a5 100644
--- a/sys/isofs/cd9660/cd9660_rrip.c
+++ b/sys/isofs/cd9660/cd9660_rrip.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)cd9660_rrip.c	8.2 (Berkeley) 1/23/94
- * $Id$
+ * $Id: cd9660_rrip.c,v 1.2 1994/08/02 07:41:26 davidg Exp $
  */
 
 #include <sys/param.h>
@@ -521,7 +521,7 @@ cd9660_rrip_loop(isodir,ana,table)
 			if (ana->iso_ce_blk >= ana->imp->volume_space_size
 			    || ana->iso_ce_off + ana->iso_ce_len > ana->imp->logical_block_size
 			    || bread(ana->imp->im_devvp,
-				     ana->iso_ce_blk * ana->imp->logical_block_size / DEV_BSIZE,
+				     iso_lblktodaddr(ana->imp, ana->iso_ce_blk),
 				     ana->imp->logical_block_size,NOCRED,&bp))
 				/* what to do now? */
 				break;
diff --git a/sys/isofs/cd9660/cd9660_vnops.c b/sys/isofs/cd9660/cd9660_vnops.c
index 368a66d..2c913f2 100644
--- a/sys/isofs/cd9660/cd9660_vnops.c
+++ b/sys/isofs/cd9660/cd9660_vnops.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)cd9660_vnops.c	8.3 (Berkeley) 1/23/94
- * $Id: cd9660_vnops.c,v 1.3 1994/08/02 07:41:36 davidg Exp $
+ * $Id: cd9660_vnops.c,v 1.4 1994/08/08 09:11:18 davidg Exp $
  */
 
 #include <sys/param.h>
@@ -479,6 +479,7 @@ cd9660_readdir(ap)
 	struct iso_mnt *imp;
 	struct iso_node *ip;
 	struct buf *bp = NULL;
+	u_short tmplen;
 	
 	ip = VTOI(ap->a_vp);
 	imp = ip->i_mnt;
@@ -567,8 +568,9 @@ cd9660_readdir(ap)
 		switch (imp->iso_ftype) {
 		case ISO_FTYPE_RRIP:
 			cd9660_rrip_getname(ep,idp->current.d_name,
-					   (u_short *)&idp->current.d_namlen,
+					   &tmplen,
 					   &idp->current.d_fileno,imp);
+			idp->current.d_namlen = tmplen;
 			if (idp->current.d_namlen)
 				error = iso_uiodir(idp,&idp->current,idp->curroff);
 			break;
@@ -658,7 +660,7 @@ cd9660_readlink(ap)
 	 * Get parents directory record block that this inode included.
 	 */
 	error = bread(imp->im_devvp,
-		      (daddr_t)(ip->i_number / DEV_BSIZE),
+		      iso_dblkno(imp, ip->i_number),
 		      imp->logical_block_size,
 		      NOCRED,
 		      &bp);
diff --git a/sys/isofs/cd9660/iso.h b/sys/isofs/cd9660/iso.h
index a329afa..04b9acc 100644
--- a/sys/isofs/cd9660/iso.h
+++ b/sys/isofs/cd9660/iso.h
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)iso.h	8.2 (Berkeley) 1/23/94
- * $Id$
+ * $Id: iso.h,v 1.2 1994/08/02 07:41:38 davidg Exp $
  */
 
 #define ISODCL(from, to) (to - from + 1)
@@ -165,6 +165,9 @@ struct iso_mnt {
 #define iso_lblkno(imp, loc) ((loc) >> (imp)->im_bshift)
 #define iso_blksize(imp, ip, lbn) ((imp)->logical_block_size)
 #define iso_lblktosize(imp, blk) ((blk) << (imp)->im_bshift)
+#define iso_lblktodaddr(imp, lbn) btodb(iso_lblktosize(imp, lbn))
+#define iso_dblkinc(imp, lbn) ((lbn) + iso_lblktodaddr(imp, 1))
+#define iso_dblkno(imp, loc) iso_lblktodaddr(imp, iso_lblkno(imp, loc))
 
 int cd9660_mount __P((struct mount *,
 	    char *, caddr_t, struct nameidata *, struct proc *));