bsd/vfs/vfs_lookup.c

165 	struct vnode *usedvp = ndp->ni_dvp;  /* store pointer to vp in case we must loop due to
337 	        dp = ndp->ni_dvp;
346 	ndp->ni_dvp = NULLVP;
371 	 * if either ni_dvp or ni_vp is non-NULL, then
376 	if (ndp->ni_dvp)
377 	        vnode_put(ndp->ni_dvp);
387 	ndp->ni_dvp = NULLVP;
392 		ndp->ni_dvp = usedvp;
454 		 * check to make sure that ni_dvp is valid
469  * Can change ni_dvp and ni_vp.  On success, returns with iocounts on stream vnode (always) and
526 		if (ndp->ni_dvp) {
530 				unlock_fsnode(ndp->ni_dvp, NULL);
533 			vnode_put(ndp->ni_dvp);
535 		ndp->ni_dvp = dp;
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.
563  *	--If we are done, returns an iocount on ni_vp, and possibly on ni_dvp depending on nameidata flags.
564  *	--In the event of an error, may return with ni_dvp NULL'ed out (in which case, iocount
606 		lookup_consider_update_cache(ndp->ni_dvp, dp, cnp, nc_generation);
677 		vnode_put(ndp->ni_dvp);
678 		ndp->ni_dvp = NULLVP;
701 		 * on both dp and ni_dvp, but for some reason
705 	        if ( (vnode_get(ndp->ni_dvp)) ) {
709 		ndp->ni_startdir = ndp->ni_dvp;
711 	if (!wantparent && ndp->ni_dvp) {
712 		vnode_put(ndp->ni_dvp);
713 		ndp->ni_dvp = NULLVP;
750  * Comes in iocount on ni_vp.  May overwrite ni_dvp, but doesn't interpret incoming value.
783 		ndp->ni_dvp = dp;
830  *	    directory vnode returned in ni_dvp, unlocked unless LOCKPARENT set
836  *	    if LOCKPARENT set, return locked parent in ni_dvp
837  *	    if WANTPARENT set, return unlocked parent in ni_dvp
923 	dp = ndp->ni_dvp;
955 			        ndp->ni_dvp = dp;
989 			ndp->ni_dvp = dp;
1051 			ndp->ni_dvp = dp;
1068 		 * referenced directory vnode in ndp->ni_dvp.
1071 			if ( (vnode_get(ndp->ni_dvp)) ) {
1075 			ndp->ni_startdir = ndp->ni_dvp;
1078 		        vnode_put(ndp->ni_dvp);
1081 		        kdebug_lookup(ndp->ni_dvp, cnp);
1116 		unlock_fsnode(ndp->ni_dvp, NULL);
1119 	if (ndp->ni_dvp)
1120 		vnode_put(ndp->ni_dvp);
1133 		unlock_fsnode(ndp->ni_dvp, NULL);
1279  * Takes ni_vp and ni_dvp non-NULL.  Returns with *new_dp set to the location
1298 		unlock_fsnode(ndp->ni_dvp, NULL);
1367 	dp = ndp->ni_dvp;
1373 	vnode_put(ndp->ni_dvp);	/* ALWAYS have a dvp for a symlink */
1376 	ndp->ni_dvp = NULLVP;
1472 		 * (possibly locked) directory inode in ndp->ni_dvp.
1512 		unlock_fsnode(ndp->ni_dvp, NULL);