avoid null arguments

SCCS-vsn: sys/kern/vfs_subr.c 7.77

diff --git a/usr/src/sys/kern/vfs_subr.c b/usr/src/sys/kern/vfs_subr.c
index c149ab3..47dd11a 100644 (file)
--- a/usr/src/sys/kern/vfs_subr.c
+++ b/usr/src/sys/kern/vfs_subr.c
@@ -4,7 +4,7 @@
  *
  * %sccs.include.redist.c%
  *
  *
  * %sccs.include.redist.c%
  *

- *     @(#)vfs_subr.c  7.76 (Berkeley) %G%
+ *     @(#)vfs_subr.c  7.77 (Berkeley) %G%

  */
 
 /*
  */
 
 /*


@@ -1153,7 +1153,7 @@ kinfo_vnode(op, where, acopysize, arg, aneeded)
        struct mount *omp;
        struct vnode *vp;
        register char *bp = where, *savebp;
        struct mount *omp;
        struct vnode *vp;
        register char *bp = where, *savebp;

-       char *ewhere = where + *acopysize;
+       char *ewhere;

        int error;
 
 #define VPTRSZ sizeof (struct vnode *)
        int error;
 
 #define VPTRSZ sizeof (struct vnode *)


@@ -1162,6 +1162,7 @@ kinfo_vnode(op, where, acopysize, arg, aneeded)
                *aneeded = (numvnodes + KINFO_VNODESLOP) * (VPTRSZ + VNODESZ);
                return (0);
        }
                *aneeded = (numvnodes + KINFO_VNODESLOP) * (VPTRSZ + VNODESZ);
                return (0);
        }

+       ewhere = where + *acopysize;

                
        do {
                if (vfs_busy(mp)) {
                
        do {
                if (vfs_busy(mp)) {