fs/tmpfs/tmpfs_vfsops.c

116 tmpfs_update_mtime_lazy(struct mount *mp)
120 	MNT_VNODE_FOREACH_LAZY(vp, mp, mvp, tmpfs_update_mtime_lazy_filter, NULL) {
129 tmpfs_update_mtime_all(struct mount *mp)
133 	if (VFS_TO_TMPFS(mp)->tm_nomtime)
135 	MNT_VNODE_FOREACH_ALL(vp, mp, mvp) {
153 tmpfs_check_rw_maps_cb(struct mount *mp __unused, vm_map_t map __unused,
168 tmpfs_revoke_rw_maps_cb(struct mount *mp __unused, vm_map_t map,
187 tmpfs_all_rw_maps(struct mount *mp, bool (*cb)(struct mount *mp, vm_map_t,
247 			if (vp->v_mount != mp) {
252 			terminate = cb(mp, map, entry, cb_arg);
271 tmpfs_check_rw_maps(struct mount *mp)
276 	tmpfs_all_rw_maps(mp, tmpfs_check_rw_maps_cb, &ca);
281 tmpfs_rw_to_ro(struct mount *mp)
286 	forced = (mp->mnt_flag & MNT_FORCE) != 0;
289 	if ((error = vn_start_write(NULL, &mp, V_WAIT)) != 0)
291 	error = vfs_write_suspend_umnt(mp);
294 	if (!forced && tmpfs_check_rw_maps(mp)) {
298 	VFS_TO_TMPFS(mp)->tm_ronly = 1;
299 	MNT_ILOCK(mp);
300 	mp->mnt_flag |= MNT_RDONLY;
301 	MNT_IUNLOCK(mp);
303 		tmpfs_all_rw_maps(mp, tmpfs_revoke_rw_maps_cb, NULL);
304 		tmpfs_update_mtime_all(mp);
305 		error = vflush(mp, 0, flags, curthread);
307 			VFS_TO_TMPFS(mp)->tm_ronly = 0;
308 			MNT_ILOCK(mp);
309 			mp->mnt_flag &= ~MNT_RDONLY;
310 			MNT_IUNLOCK(mp);
313 		if (!tmpfs_check_rw_maps(mp))
317 	vfs_write_resume(mp, 0);
322 tmpfs_mount(struct mount *mp)
341 	if (vfs_filteropt(mp->mnt_optnew, tmpfs_opts))
344 	if (mp->mnt_flag & MNT_UPDATE) {
346 		if (vfs_filteropt(mp->mnt_optnew, tmpfs_updateopts) != 0)
348 		tmp = VFS_TO_TMPFS(mp);
349 		if (vfs_getopt_size(mp->mnt_optnew, "size", &size_max) == 0) {
360 		if (vfs_getopt_size(mp->mnt_optnew, "easize", &ea_max_size) == 0) {
363 		if (vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0) &&
366 			return (tmpfs_rw_to_ro(mp));
367 		} else if (!vfs_flagopt(mp->mnt_optnew, "ro", NULL, 0) &&
371 			MNT_ILOCK(mp);
372 			mp->mnt_flag &= ~MNT_RDONLY;
373 			MNT_IUNLOCK(mp);
375 		tmp->tm_nomtime = vfs_getopt(mp->mnt_optnew, "nomtime", NULL,
377 		MNT_ILOCK(mp);
378 		if ((mp->mnt_flag & MNT_UNION) == 0) {
379 			mp->mnt_kern_flag |= MNTK_FPLOOKUP;
381 			mp->mnt_kern_flag &= ~MNTK_FPLOOKUP;
383 		MNT_IUNLOCK(mp);
387 	vn_lock(mp->mnt_vnodecovered, LK_SHARED | LK_RETRY);
388 	error = VOP_GETATTR(mp->mnt_vnodecovered, &va, mp->mnt_cred);
389 	VOP_UNLOCK(mp->mnt_vnodecovered);
393 	if (mp->mnt_cred->cr_ruid != 0 ||
394 	    vfs_scanopt(mp->mnt_optnew, "gid", "%d", &root_gid) != 1)
396 	if (mp->mnt_cred->cr_ruid != 0 ||
397 	    vfs_scanopt(mp->mnt_optnew, "uid", "%d", &root_uid) != 1)
399 	if (mp->mnt_cred->cr_ruid != 0 ||
400 	    vfs_scanopt(mp->mnt_optnew, "mode", "%ho", &root_mode) != 1)
402 	if (vfs_getopt_size(mp->mnt_optnew, "inodes", &nodes_max) != 0)
404 	if (vfs_getopt_size(mp->mnt_optnew, "size", &size_max) != 0)
406 	if (vfs_getopt_size(mp->mnt_optnew, "maxfilesize", &maxfilesize) != 0)
408 	if (vfs_getopt_size(mp->mnt_optnew, "easize", &ea_max_size) != 0)
410 	nonc = vfs_getopt(mp->mnt_optnew, "nonc", NULL, NULL) == 0;
411 	nomtime = vfs_getopt(mp->mnt_optnew, "nomtime", NULL, NULL) == 0;
412 	pgread = vfs_getopt(mp->mnt_optnew, "pgread", NULL, NULL) == 0;
460 	tmp->tm_ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
466 	error = tmpfs_alloc_node(mp, tmp, VDIR, root_uid, root_gid,
477 	MNT_ILOCK(mp);
478 	mp->mnt_flag |= MNT_LOCAL;
479 	mp->mnt_kern_flag |= MNTK_LOOKUP_SHARED | MNTK_EXTENDED_SHARED |
481 	if (!nonc && (mp->mnt_flag & MNT_UNION) == 0)
482 		mp->mnt_kern_flag |= MNTK_FPLOOKUP;
483 	MNT_IUNLOCK(mp);
485 	mp->mnt_data = tmp;
486 	mp->mnt_stat.f_namemax = MAXNAMLEN;
487 	vfs_getnewfsid(mp);
488 	vfs_mountedfrom(mp, "tmpfs");
495 tmpfs_unmount(struct mount *mp, int mntflags)
502 	tmp = VFS_TO_TMPFS(mp);
505 	error = vfs_write_suspend_umnt(mp);
514 		error = vflush(mp, 0, flags, curthread);
516 			vfs_write_resume(mp, VR_START_WRITE);
519 		MNT_ILOCK(mp);
520 		if (mp->mnt_nvnodelistsize == 0) {
521 			MNT_IUNLOCK(mp);
524 		MNT_IUNLOCK(mp);
526 			vfs_write_resume(mp, VR_START_WRITE);
542 	mp->mnt_data = NULL;
544 	vfs_write_resume(mp, VR_START_WRITE);
574 tmpfs_root(struct mount *mp, int flags, struct vnode **vpp)
578 	error = tmpfs_alloc_vp(mp, VFS_TO_TMPFS(mp)->tm_root, flags, vpp);
585 tmpfs_fhtovp(struct mount *mp, struct fid *fhp, int flags,
602 	tmp = VFS_TO_TMPFS(mp);
618 		error = tmpfs_alloc_vp(mp, node, LK_EXCLUSIVE, vpp);
627 tmpfs_statfs(struct mount *mp, struct statfs *sbp)
632 	tmp = VFS_TO_TMPFS(mp);
659 tmpfs_sync(struct mount *mp, int waitfor)
663 		MNT_ILOCK(mp);
664 		mp->mnt_kern_flag |= MNTK_SUSPEND2 | MNTK_SUSPENDED;
665 		MNT_IUNLOCK(mp);
667 		tmpfs_update_mtime_lazy(mp);
712 db_print_tmpfs(struct mount *mp, struct tmpfs_mount *tmp)
714 	db_printf("mp %p (%s) tmp %p\n", mp,
715 	    mp->mnt_stat.f_mntonname, tmp);
730 	struct mount *mp;
734 		mp = (struct mount *)addr;
735 		tmp = VFS_TO_TMPFS(mp);
736 		db_print_tmpfs(mp, tmp);
740 	TAILQ_FOREACH(mp, &mountlist, mnt_list) {
741 		if (strcmp(mp->mnt_stat.f_fstypename, tmpfs_vfsconf.vfc_name) ==
743 			tmp = VFS_TO_TMPFS(mp);
744 			db_print_tmpfs(mp, tmp);