bsd/vfs/vfs_lookup.c

208 				panic("We need to keep going on a continued lookup, but for vp type %d (tag %d)\n", ndp->ni_vp->v_type, ndp->ni_vp->v_tag);
347 	ndp->ni_vp  = NULLVP;
371 	 * if either ni_dvp or ni_vp is non-NULL, then
378 	if (ndp->ni_vp)
379 	        vnode_put(ndp->ni_vp);
386 	ndp->ni_vp = NULLVP;
469  * Can change ni_dvp and ni_vp.  On success, returns with iocounts on stream vnode (always) and
539 	ndp->ni_vp = svp;  /* on create this may be null */
555  * 	--One on ni_vp.  One on ni_dvp if there is more path, or we didn't come through the
560  *	--If we find a symlink, returns with iocounts on both ni_vp and ni_dvp.
561  *	--If we are to look up another component, then we have an iocount on ni_vp and
563  *	--If we are done, returns an iocount on ni_vp, and possibly on ni_dvp depending on nameidata flags.
576 	dp = ndp->ni_vp;
579 	if (ndp->ni_vp == NULLVP) {
580 		panic("NULL ni_vp in %s\n", __FUNCTION__);
612 	 * Updates ndp->ni_vp.
615 	dp = ndp->ni_vp;
730 		dp = ndp->ni_vp;
750  * Comes in iocount on ni_vp.  May overwrite ni_dvp, but doesn't interpret incoming value.
758 	dp = ndp->ni_vp;
788 	ndp->ni_vp = dp;
831  *	    component vnode returned in ni_vp (if it exists), locked.
835  *	return the answer in ni_vp, locked if LOCKLEAF set
901 		ndp->ni_vp = dp;
911 	ndp->ni_vp = NULLVP;
925 	if (ndp->ni_vp != NULLVP) {
927 		 * cache_lookup_path returned a non-NULL ni_vp then,
956 				ndp->ni_vp = dp;
998 	ndp->ni_vp = NULLVP;
1027 	error = VNOP_LOOKUP(dp, &ndp->ni_vp, cnp, ctx);
1059 		if (ndp->ni_vp != NULLVP)
1066 		 * We return with ni_vp NULL to indicate that the entry
1085 	/* We'll always have an iocount on ni_vp when this finishes. */
1092 		dp = ndp->ni_vp;
1122 	vnode_put(ndp->ni_vp);
1123 	ndp->ni_vp = NULLVP;
1138 	ndp->ni_vp = NULLVP;
1165  * Modifies only ni_vp.  Always returns with ni_vp still valid (iocount held).
1239 			ndp->ni_vp = dp = tdp;
1279  * Takes ni_vp and ni_dvp non-NULL.  Returns with *new_dp set to the location
1306 	if ((error = mac_vnode_check_readlink(ctx, ndp->ni_vp)) != 0)
1326 	error = VNOP_READLINK(ndp->ni_vp, auio, ctx);
1372 	vnode_put(ndp->ni_vp);
1375 	ndp->ni_vp = NULLVP;
1470 		 * We return with ni_vp NULL to indicate that the entry