341 				       struct cifs_sb_info *cifs_sb,  in reconn_set_next_dfs_target()  argument
347 	if (!cifs_sb || !cifs_sb->origin_fullpath)  in reconn_set_next_dfs_target()
358 	cifs_dbg(FYI, "%s: UNC: %s\n", __func__, cifs_sb->origin_fullpath);  in reconn_set_next_dfs_target()
372 static inline int reconn_setup_dfs_targets(struct cifs_sb_info *cifs_sb,  in reconn_setup_dfs_targets()  argument
375 	if (!cifs_sb->origin_fullpath)  in reconn_setup_dfs_targets()
377 	return dfs_cache_noreq_find(cifs_sb->origin_fullpath + 1, NULL, tl);  in reconn_setup_dfs_targets()
400 	struct cifs_sb_info *cifs_sb = NULL;  in cifs_reconnect()  local
416 		cifs_sb = CIFS_SB(sb);  in cifs_reconnect()
417 		rc = reconn_setup_dfs_targets(cifs_sb, &tgt_list);  in cifs_reconnect()
419 			cifs_sb = NULL;  in cifs_reconnect()
526 		reconn_set_next_dfs_target(server, cifs_sb, &tgt_list, &tgt_it);  in cifs_reconnect()
555 		rc = dfs_cache_noreq_update_tgthint(cifs_sb->origin_fullpath + 1,  in cifs_reconnect()
561 		rc = dfs_cache_update_vol(cifs_sb->origin_fullpath, server);  in cifs_reconnect()
3447 	struct cifs_sb_info *new = mnt_data->cifs_sb;  in compare_mount_options()
3490 	struct cifs_sb_info *new = mnt_data->cifs_sb;  in match_prepath()
3509 	struct cifs_sb_info *cifs_sb;  in cifs_match_super()  local
3517 	cifs_sb = CIFS_SB(sb);  in cifs_match_super()
3518 	tlink = cifs_get_tlink(cifs_sb_master_tlink(cifs_sb));  in cifs_match_super()
3817 			  struct cifs_sb_info *cifs_sb, struct smb_vol *vol_info)  in reset_cifs_unix_caps()  argument
3871 			if (cifs_sb)  in reset_cifs_unix_caps()
3872 				cifs_sb->mnt_cifs_flags |=  in reset_cifs_unix_caps()
3880 			if (cifs_sb)  in reset_cifs_unix_caps()
3881 				cifs_sb->mnt_cifs_flags |=  in reset_cifs_unix_caps()
3917 			struct cifs_sb_info *cifs_sb)  in cifs_setup_cifs_sb()  argument
3919 	INIT_DELAYED_WORK(&cifs_sb->prune_tlinks, cifs_prune_tlinks);  in cifs_setup_cifs_sb()
3921 	spin_lock_init(&cifs_sb->tlink_tree_lock);  in cifs_setup_cifs_sb()
3922 	cifs_sb->tlink_tree = RB_ROOT;  in cifs_setup_cifs_sb()
3924 	cifs_sb->bsize = pvolume_info->bsize;  in cifs_setup_cifs_sb()
3929 	cifs_sb->rsize = pvolume_info->rsize;  in cifs_setup_cifs_sb()
3930 	cifs_sb->wsize = pvolume_info->wsize;  in cifs_setup_cifs_sb()
3932 	cifs_sb->mnt_uid = pvolume_info->linux_uid;  in cifs_setup_cifs_sb()
3933 	cifs_sb->mnt_gid = pvolume_info->linux_gid;  in cifs_setup_cifs_sb()
3934 	cifs_sb->mnt_file_mode = pvolume_info->file_mode;  in cifs_setup_cifs_sb()
3935 	cifs_sb->mnt_dir_mode = pvolume_info->dir_mode;  in cifs_setup_cifs_sb()
3937 		 cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode);  in cifs_setup_cifs_sb()
3939 	cifs_sb->actimeo = pvolume_info->actimeo;  in cifs_setup_cifs_sb()
3940 	cifs_sb->local_nls = pvolume_info->local_nls;  in cifs_setup_cifs_sb()
3943 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_DFS;  in cifs_setup_cifs_sb()
3945 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;  in cifs_setup_cifs_sb()
3947 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;  in cifs_setup_cifs_sb()
3949 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UID_FROM_ACL;  in cifs_setup_cifs_sb()
3951 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;  in cifs_setup_cifs_sb()
3953 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SFM_CHR;  in cifs_setup_cifs_sb()
3955 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;  in cifs_setup_cifs_sb()
3957 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;  in cifs_setup_cifs_sb()
3959 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;  in cifs_setup_cifs_sb()
3961 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;  in cifs_setup_cifs_sb()
3963 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_HANDLE_CACHE;  in cifs_setup_cifs_sb()
3965 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC;  in cifs_setup_cifs_sb()
3967 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL;  in cifs_setup_cifs_sb()
3969 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_RWPIDFORWARD;  in cifs_setup_cifs_sb()
3971 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MODE_FROM_SID;  in cifs_setup_cifs_sb()
3973 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;  in cifs_setup_cifs_sb()
3975 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_BACKUPUID;  in cifs_setup_cifs_sb()
3976 		cifs_sb->mnt_backupuid = pvolume_info->backupuid;  in cifs_setup_cifs_sb()
3979 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_BACKUPGID;  in cifs_setup_cifs_sb()
3980 		cifs_sb->mnt_backupgid = pvolume_info->backupgid;  in cifs_setup_cifs_sb()
3983 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID;  in cifs_setup_cifs_sb()
3985 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;  in cifs_setup_cifs_sb()
3987 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;  in cifs_setup_cifs_sb()
3989 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_FSCACHE;  in cifs_setup_cifs_sb()
3991 		cifs_sb->mnt_cifs_flags |= (CIFS_MOUNT_MULTIUSER |  in cifs_setup_cifs_sb()
3994 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_STRICT_IO;  in cifs_setup_cifs_sb()
3997 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;  in cifs_setup_cifs_sb()
4001 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_RO_CACHE;  in cifs_setup_cifs_sb()
4004 		cifs_sb->mnt_cifs_flags |= (CIFS_MOUNT_RO_CACHE |  in cifs_setup_cifs_sb()
4022 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MF_SYMLINKS;  in cifs_setup_cifs_sb()
4029 		cifs_sb->prepath = kstrdup(pvolume_info->prepath, GFP_KERNEL);  in cifs_setup_cifs_sb()
4030 		if (cifs_sb->prepath == NULL)  in cifs_setup_cifs_sb()
4032 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH;  in cifs_setup_cifs_sb()
4059 static inline void mount_put_conns(struct cifs_sb_info *cifs_sb,  in mount_put_conns()  argument
4072 	cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_POSIX_PATHS;  in mount_put_conns()
4077 static int mount_get_conns(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,  in mount_get_conns()  argument
4128 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_POSIX_PATHS;  in mount_get_conns()
4136 		reset_cifs_unix_caps(*xid, tcon, cifs_sb, vol);  in mount_get_conns()
4146 		server->ops->qfs_tcon(*xid, tcon, cifs_sb);  in mount_get_conns()
4147 		if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE) {  in mount_get_conns()
4151 			else if ((cifs_sb->mnt_cifs_flags &  in mount_get_conns()
4158 	cifs_sb->wsize = server->ops->negotiate_wsize(tcon, vol);  in mount_get_conns()
4159 	cifs_sb->rsize = server->ops->negotiate_rsize(tcon, vol);  in mount_get_conns()
4164 static int mount_setup_tlink(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses,  in mount_setup_tlink()  argument
4180 	cifs_sb->master_tlink = tlink;  in mount_setup_tlink()
4181 	spin_lock(&cifs_sb->tlink_tree_lock);  in mount_setup_tlink()
4182 	tlink_rb_insert(&cifs_sb->tlink_tree, tlink);  in mount_setup_tlink()
4183 	spin_unlock(&cifs_sb->tlink_tree_lock);  in mount_setup_tlink()
4185 	queue_delayed_work(cifsiod_wq, &cifs_sb->prune_tlinks,  in mount_setup_tlink()
4197 		       const struct cifs_sb_info *cifs_sb, bool useppath)  in build_unc_path_to_root()  argument
4215 		*pos = CIFS_DIR_SEP(cifs_sb);  in build_unc_path_to_root()
4221 	convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));  in build_unc_path_to_root()
4239 		    struct smb_vol *volume_info, struct cifs_sb_info *cifs_sb,  in expand_dfs_referral()  argument
4246 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS)  in expand_dfs_referral()
4249 	full_path = build_unc_path_to_root(volume_info, cifs_sb, true);  in expand_dfs_referral()
4253 	rc = dfs_cache_find(xid, ses, cifs_sb->local_nls, cifs_remap(cifs_sb),  in expand_dfs_referral()
4258 		mdata = cifs_compose_mount_options(cifs_sb->mountdata,  in expand_dfs_referral()
4272 		kfree(cifs_sb->mountdata);  in expand_dfs_referral()
4273 		cifs_sb->mountdata = mdata;  in expand_dfs_referral()
4317 			      struct cifs_sb_info *cifs_sb, struct smb_vol *vol, unsigned int *xid,  in setup_dfs_tgt_conn()  argument
4332 	mdata = cifs_compose_mount_options(cifs_sb->mountdata, full_path + 1, &ref, &fake_devname);  in setup_dfs_tgt_conn()
4352 		mount_put_conns(cifs_sb, *xid, *server, *ses, *tcon);  in setup_dfs_tgt_conn()
4353 		rc = mount_get_conns(&fake_vol, cifs_sb, xid, server, ses,  in setup_dfs_tgt_conn()
4367 static int do_dfs_failover(const char *path, const char *full_path, struct cifs_sb_info *cifs_sb,  in do_dfs_failover()  argument
4376 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS)  in do_dfs_failover()
4389 		rc = setup_dfs_tgt_conn(path, full_path, tgt_it, cifs_sb, vol, xid, server, ses,  in do_dfs_failover()
4400 					      cifs_sb->local_nls,  in do_dfs_failover()
4401 					      cifs_remap(cifs_sb), path,  in do_dfs_failover()
4471 					struct cifs_sb_info *cifs_sb,  in cifs_are_all_path_components_accessible()  argument
4480 	sep = CIFS_DIR_SEP(cifs_sb);  in cifs_are_all_path_components_accessible()
4483 	rc = server->ops->is_path_accessible(xid, tcon, cifs_sb, "");  in cifs_are_all_path_components_accessible()
4507 		rc = server->ops->is_path_accessible(xid, tcon, cifs_sb,  in cifs_are_all_path_components_accessible()
4518 static int is_path_remote(struct cifs_sb_info *cifs_sb, struct smb_vol *vol,  in is_path_remote()  argument
4532 	full_path = cifs_build_path_to_root(vol, cifs_sb, tcon,  in is_path_remote()
4539 	rc = server->ops->is_path_accessible(xid, tcon, cifs_sb,  in is_path_remote()
4548 			cifs_sb, full_path, tcon->Flags & SMB_SHARE_IS_IN_DFS);  in is_path_remote()
4551 			cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH;  in is_path_remote()
4561 static void set_root_ses(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses,  in set_root_ses()  argument
4568 			ses->tcon_ipc->remap = cifs_remap(cifs_sb);  in set_root_ses()
4581 static int check_dfs_prepath(struct cifs_sb_info *cifs_sb, struct smb_vol *vol,  in check_dfs_prepath()  argument
4586 	char sep = CIFS_DIR_SEP(cifs_sb), tmp;  in check_dfs_prepath()
4592 	path = cifs_build_path_to_root(vol, cifs_sb, tcon, added_treename);  in check_dfs_prepath()
4621 		rc = server->ops->is_path_accessible(xid, tcon, cifs_sb, path);  in check_dfs_prepath()
4630 				npath = build_unc_path_to_root(&v, cifs_sb, true);  in check_dfs_prepath()
4635 				npath = build_unc_path_to_root(&v, cifs_sb, true);  in check_dfs_prepath()
4651 int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)  in cifs_mount()  argument
4663 	rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses, &tcon);  in cifs_mount()
4671 	if (dfs_cache_find(xid, ses, cifs_sb->local_nls, cifs_remap(cifs_sb), vol->UNC + 1, NULL,  in cifs_mount()
4677 		rc = is_path_remote(cifs_sb, vol, xid, server, tcon);  in cifs_mount()
4684 	mntdata = kstrndup(cifs_sb->mountdata, strlen(cifs_sb->mountdata), GFP_KERNEL);  in cifs_mount()
4690 	ref_path = build_unc_path_to_root(vol, cifs_sb, false);  in cifs_mount()
4697 	set_root_ses(cifs_sb, ses, &root_ses);  in cifs_mount()
4701 		full_path = build_unc_path_to_root(vol, cifs_sb, !!count);  in cifs_mount()
4708 		oldmnt = cifs_sb->mountdata;  in cifs_mount()
4709 		rc = expand_dfs_referral(xid, root_ses, vol, cifs_sb, ref_path + 1);  in cifs_mount()
4713 		if (oldmnt != cifs_sb->mountdata) {  in cifs_mount()
4714 			mount_put_conns(cifs_sb, xid, server, ses, tcon);  in cifs_mount()
4715 			rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses, &tcon);  in cifs_mount()
4719 			rc = do_dfs_failover(ref_path + 1, full_path, cifs_sb, vol, root_ses, &xid,  in cifs_mount()
4729 			set_root_ses(cifs_sb, ses, &root_ses);  in cifs_mount()
4732 		rc = check_dfs_prepath(cifs_sb, vol, xid, server, tcon, &ref_path);  in cifs_mount()
4752 	cifs_sb->origin_fullpath = kstrndup(full_path, strlen(full_path), GFP_KERNEL);  in cifs_mount()
4753 	if (!cifs_sb->origin_fullpath) {  in cifs_mount()
4760 	tcon->remap = cifs_remap(cifs_sb);  in cifs_mount()
4764 	rc = dfs_cache_add_vol(mntdata, vol, cifs_sb->origin_fullpath);  in cifs_mount()
4772 	cifs_autodisable_serverino(cifs_sb);  in cifs_mount()
4777 	cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_USE_PREFIX_PATH;  in cifs_mount()
4778 	kfree(cifs_sb->prepath);  in cifs_mount()
4779 	cifs_sb->prepath = vol->prepath;  in cifs_mount()
4785 	return mount_setup_tlink(cifs_sb, ses, tcon);  in cifs_mount()
4791 	kfree(cifs_sb->origin_fullpath);  in cifs_mount()
4793 	mount_put_conns(cifs_sb, xid, server, ses, tcon);  in cifs_mount()
4797 int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)  in cifs_mount()  argument
4805 	rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses, &tcon);  in cifs_mount()
4810 		rc = is_path_remote(cifs_sb, vol, xid, server, tcon);  in cifs_mount()
4819 	return mount_setup_tlink(cifs_sb, ses, tcon);  in cifs_mount()
4822 	mount_put_conns(cifs_sb, xid, server, ses, tcon);  in cifs_mount()
4997 cifs_umount(struct cifs_sb_info *cifs_sb)  in cifs_umount()  argument
4999 	struct rb_root *root = &cifs_sb->tlink_tree;  in cifs_umount()
5003 	cancel_delayed_work_sync(&cifs_sb->prune_tlinks);  in cifs_umount()
5005 	spin_lock(&cifs_sb->tlink_tree_lock);  in cifs_umount()
5012 		spin_unlock(&cifs_sb->tlink_tree_lock);  in cifs_umount()
5014 		spin_lock(&cifs_sb->tlink_tree_lock);  in cifs_umount()
5016 	spin_unlock(&cifs_sb->tlink_tree_lock);  in cifs_umount()
5018 	kfree(cifs_sb->mountdata);  in cifs_umount()
5019 	kfree(cifs_sb->prepath);  in cifs_umount()
5021 	dfs_cache_del_vol(cifs_sb->origin_fullpath);  in cifs_umount()
5022 	kfree(cifs_sb->origin_fullpath);  in cifs_umount()
5024 	call_rcu(&cifs_sb->rcu, delayed_free);  in cifs_umount()
5099 cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)  in cifs_construct_tcon()  argument
5102 	struct cifs_tcon *master_tcon = cifs_sb_master_tcon(cifs_sb);  in cifs_construct_tcon()
5111 	vol_info->local_nls = cifs_sb->local_nls;  in cifs_construct_tcon()
5165 cifs_sb_master_tcon(struct cifs_sb_info *cifs_sb)  in cifs_sb_master_tcon()  argument
5167 	return tlink_tcon(cifs_sb_master_tlink(cifs_sb));  in cifs_sb_master_tcon()
5228 cifs_sb_tlink(struct cifs_sb_info *cifs_sb)  in cifs_sb_tlink()  argument
5234 	if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER))  in cifs_sb_tlink()
5235 		return cifs_get_tlink(cifs_sb_master_tlink(cifs_sb));  in cifs_sb_tlink()
5237 	spin_lock(&cifs_sb->tlink_tree_lock);  in cifs_sb_tlink()
5238 	tlink = tlink_rb_search(&cifs_sb->tlink_tree, fsuid);  in cifs_sb_tlink()
5241 	spin_unlock(&cifs_sb->tlink_tree_lock);  in cifs_sb_tlink()
5253 		spin_lock(&cifs_sb->tlink_tree_lock);  in cifs_sb_tlink()
5255 		tlink = tlink_rb_search(&cifs_sb->tlink_tree, fsuid);  in cifs_sb_tlink()
5258 			spin_unlock(&cifs_sb->tlink_tree_lock);  in cifs_sb_tlink()
5263 		tlink_rb_insert(&cifs_sb->tlink_tree, tlink);  in cifs_sb_tlink()
5264 		spin_unlock(&cifs_sb->tlink_tree_lock);  in cifs_sb_tlink()
5288 	tlink->tl_tcon = cifs_construct_tcon(cifs_sb, fsuid);  in cifs_sb_tlink()
5307 	struct cifs_sb_info *cifs_sb = container_of(work, struct cifs_sb_info,  in cifs_prune_tlinks()  local
5309 	struct rb_root *root = &cifs_sb->tlink_tree;  in cifs_prune_tlinks()
5321 	spin_lock(&cifs_sb->tlink_tree_lock);  in cifs_prune_tlinks()
5337 		spin_unlock(&cifs_sb->tlink_tree_lock);  in cifs_prune_tlinks()
5339 		spin_lock(&cifs_sb->tlink_tree_lock);  in cifs_prune_tlinks()
5341 	spin_unlock(&cifs_sb->tlink_tree_lock);  in cifs_prune_tlinks()
5343 	queue_delayed_work(cifsiod_wq, &cifs_sb->prune_tlinks,  in cifs_prune_tlinks()