75 nullfs_mount(struct mount *mp)  in nullfs_mount()  argument
86 	NULLFSDEBUG("nullfs_mount(mp = %p)\n", (void *)mp);  in nullfs_mount()
88 	if (mp->mnt_flag & MNT_ROOTFS)  in nullfs_mount()
94 	if (mp->mnt_flag & MNT_UPDATE) {  in nullfs_mount()
98 		if (vfs_flagopt(mp->mnt_optnew, "export", NULL, 0))  in nullfs_mount()
107 	error = vfs_getopt(mp->mnt_optnew, "target", (void **)&target, &len);  in nullfs_mount()
114 	if (mp->mnt_vnodecovered->v_op == &null_vnodeops &&  in nullfs_mount()
115 	    VOP_ISLOCKED(mp->mnt_vnodecovered) == LK_EXCLUSIVE) {  in nullfs_mount()
116 		VOP_UNLOCK(mp->mnt_vnodecovered, 0);  in nullfs_mount()
134 		vn_lock(mp->mnt_vnodecovered, LK_EXCLUSIVE | LK_RETRY);  in nullfs_mount()
148 	if (mp->mnt_vnodecovered->v_op == &null_vnodeops) {  in nullfs_mount()
149 		nn = VTONULL(mp->mnt_vnodecovered);  in nullfs_mount()
167 	mp->mnt_data = xmp;  in nullfs_mount()
172 	error = null_nodeget(mp, lowerrootvp, &nullm_rootvp);  in nullfs_mount()
180 		MNT_ILOCK(mp);  in nullfs_mount()
181 		mp->mnt_flag |= MNT_LOCAL;  in nullfs_mount()
182 		MNT_IUNLOCK(mp);  in nullfs_mount()
186 	if (vfs_getopt(mp->mnt_optnew, "nocache", NULL, NULL) == 0 ||  in nullfs_mount()
190 	MNT_ILOCK(mp);  in nullfs_mount()
192 		mp->mnt_kern_flag |= lowerrootvp->v_mount->mnt_kern_flag &  in nullfs_mount()
196 	mp->mnt_kern_flag |= MNTK_LOOKUP_EXCL_DOTDOT;  in nullfs_mount()
197 	mp->mnt_kern_flag |= lowerrootvp->v_mount->mnt_kern_flag &  in nullfs_mount()
199 	MNT_IUNLOCK(mp);  in nullfs_mount()
200 	vfs_getnewfsid(mp);  in nullfs_mount()
203 		TAILQ_INSERT_TAIL(&xmp->nullm_vfs->mnt_uppers, mp,  in nullfs_mount()
208 	vfs_mountedfrom(mp, target);  in nullfs_mount()
212 		mp->mnt_stat.f_mntfromname, mp->mnt_stat.f_mntonname);  in nullfs_mount()
220 nullfs_unmount(mp, mntflags)  in nullfs_unmount()  argument
221 	struct mount *mp;  in nullfs_unmount()
228 	NULLFSDEBUG("nullfs_unmount: mp = %p\n", (void *)mp);
237 		error = vflush(mp, 0, flags, curthread);
240 		MNT_ILOCK(mp);
241 		if (mp->mnt_nvnodelistsize == 0) {
242 			MNT_IUNLOCK(mp);
245 		MNT_IUNLOCK(mp);
253 	mntdata = mp->mnt_data;
261 		TAILQ_REMOVE(&ump->mnt_uppers, mp, mnt_upper_link);
265 	mp->mnt_data = NULL;
271 nullfs_root(mp, flags, vpp)  in nullfs_root()  argument
272 	struct mount *mp;  in nullfs_root()
280 	mntdata = MOUNTTONULLMOUNT(mp);
281 	NULLFSDEBUG("nullfs_root(mp = %p, vp = %p)\n", mp,
287 		error = null_nodeget(mp, mntdata->nullm_lowerrootvp, &vp);
298 nullfs_quotactl(mp, cmd, uid, arg)  in nullfs_quotactl()  argument
299 	struct mount *mp;  in nullfs_quotactl()
304 	return VFS_QUOTACTL(MOUNTTONULLMOUNT(mp)->nullm_vfs, cmd, uid, arg);
308 nullfs_statfs(mp, sbp)  in nullfs_statfs()  argument
309 	struct mount *mp;  in nullfs_statfs()
315 	NULLFSDEBUG("nullfs_statfs(mp = %p, vp = %p->%p)\n", (void *)mp,
316 	    (void *)MOUNTTONULLMOUNT(mp)->nullm_rootvp,
317 	    (void *)NULLVPTOLOWERVP(MOUNTTONULLMOUNT(mp)->nullm_rootvp));
321 	error = VFS_STATFS(MOUNTTONULLMOUNT(mp)->nullm_vfs, mstat);
345 nullfs_sync(mp, waitfor)  in nullfs_sync()  argument
346 	struct mount *mp;  in nullfs_sync()
356 nullfs_vget(mp, ino, flags, vpp)  in nullfs_vget()  argument
357 	struct mount *mp;  in nullfs_vget()
367 	error = VFS_VGET(MOUNTTONULLMOUNT(mp)->nullm_vfs, ino, flags, vpp);
370 	return (null_nodeget(mp, *vpp, vpp));
374 nullfs_fhtovp(mp, fidp, flags, vpp)  in nullfs_fhtovp()  argument
375 	struct mount *mp;  in nullfs_fhtovp()
382 	error = VFS_FHTOVP(MOUNTTONULLMOUNT(mp)->nullm_vfs, fidp, flags,
386 	return (null_nodeget(mp, *vpp, vpp));
390 nullfs_extattrctl(mp, cmd, filename_vp, namespace, attrname)  in nullfs_extattrctl()  argument
391 	struct mount *mp;  in nullfs_extattrctl()
398 	return (VFS_EXTATTRCTL(MOUNTTONULLMOUNT(mp)->nullm_vfs, cmd,
403 nullfs_reclaim_lowervp(struct mount *mp, struct vnode *lowervp)  in nullfs_reclaim_lowervp()  argument
407 	vp = null_hashget(mp, lowervp);  in nullfs_reclaim_lowervp()
416 nullfs_unlink_lowervp(struct mount *mp, struct vnode *lowervp)  in nullfs_unlink_lowervp()  argument
421 	vp = null_hashget(mp, lowervp);  in nullfs_unlink_lowervp()