smb/client/dfs.c

24 	int rc;
45 	rc = smb3_parse_devname(path, ctx);
46 	if (rc)
49 	rc = dns_resolve_server_name_to_ip(path, (struct sockaddr *)&ctx->dstaddr, NULL);
53 	return rc;
59 	int rc;
62 	rc = cifs_mount_get_session(mnt_ctx);
65 	return rc;
89 	int rc;
92 	rc = ref_walk_get_tgt(rw, tgt);
93 	if (!rc)
94 		rc = dfs_parse_target_referral(fpath, tgt, ctx);
95 	return rc;
105 	int rc;
117 		rc = PTR_ERR(ref_path);
119 		return rc;
132 	int rc = -ENOENT;
137 			rc = dfs_get_referral(mnt_ctx, ref_walk_path(rw) + 1,
139 			if (rc) {
140 				rc = cifs_mount_get_tcon(mnt_ctx);
141 				if (!rc)
142 					rc = cifs_is_path_remote(mnt_ctx);
146 				rc = -ENOENT;
152 			rc = parse_dfs_target(ctx, rw, &tgt);
153 			if (rc)
157 			rc = get_session(mnt_ctx, ref_walk_path(rw));
158 			if (rc)
166 				rc = cifs_mount_get_tcon(mnt_ctx);
167 				if (!rc)
168 					rc = cifs_is_path_remote(mnt_ctx);
169 				if (!rc)
171 				if (rc != -EREMOTE)
178 			rc = ref_walk_advance(rw);
179 			if (!rc) {
180 				rc = set_ref_paths(mnt_ctx, &tgt, rw);
181 				if (!rc) {
182 					rc = -EREMOTE;
186 			if (rc != -ELOOP)
189 	} while (rc && ref_walk_descend(rw));
193 	return rc;
199 	int rc;
206 	rc = set_ref_paths(mnt_ctx, NULL, rw);
207 	if (!rc)
208 		rc = __dfs_referral_walk(mnt_ctx, rw);
210 	return rc;
220 	int rc;
226 	rc = dfs_referral_walk(mnt_ctx);
227 	if (!rc) {
233 			rc = -EHOSTDOWN;
235 			rc = -EACCES;
237 			rc = -ENOENT;
239 	if (rc)
259 	return rc;
271 	int rc = 0;
274 		rc = dns_resolve_server_name_to_ip(ctx->source, addr, NULL);
275 		if (!rc)
279 	return rc;
286 	int rc;
288 	rc = update_fs_context_dstaddr(ctx);
289 	if (rc)
290 		return rc;
293 	rc = get_session(mnt_ctx, NULL);
294 	if (rc)
295 		return rc;
305 		rc = dfs_get_referral(mnt_ctx, ctx->UNC + 1, NULL, NULL);
306 		if (rc) {
308 				 __func__, ctx->UNC + 1, rc);
314 		rc = cifs_mount_get_tcon(mnt_ctx);
315 		if (!rc)
316 			rc = cifs_is_path_remote(mnt_ctx);
317 		return rc;
322 	rc = __dfs_mount_share(mnt_ctx);
324 	return rc;
331 	int rc = 0;
358 		rc = PTR_ERR(npath);
367 	return rc;
373 	int rc = 0;
386 		rc = match_target_ip(server, dfs_host, dfs_host_len, target_match);
387 		if (rc)
388 			cifs_dbg(VFS, "%s: failed to match target ip: %d\n", __func__, rc);
391 	return rc;
400 	int rc;
419 	rc = server->ops->tree_connect(xid, ses, tree, tcon,
421 	cifs_server_dbg(FYI, "%s: tree_reconnect %s: %d\n", __func__, tree, rc);
423 	if (rc) {
446 	int rc;
456 		rc = -ENOENT;
470 		rc = dfs_cache_get_tgt_share(server->leaf_fullpath + 1, tit, &share, &prefix);
471 		if (rc) {
472 			cifs_dbg(VFS, "%s: failed to parse target share: %d\n", __func__, rc);
476 		rc = target_share_matches_server(server, share, &target_match);
477 		if (rc)
480 			rc = -EHOSTUNREACH;
489 			rc = ops->tree_connect(xid, tcon->ses, tree, tcon, cifs_sb->local_nls);
501 			rc = ops->tree_connect(xid, tcon->ses, tree, tcon, cifs_sb->local_nls);
502 			if (rc)
505 			rc = cifs_update_super_prepath(cifs_sb, prefix);
508 			rc = update_server_fullpath(server, cifs_sb, target);
511 			if (!rc) {
512 				rc = -EREMOTE;
524 	return rc;
531 	int rc;
537 		rc = __tree_connect_dfs_target(xid, tcon, cifs_sb, tree, islink, tl);
538 		if (!rc || rc != -EREMOTE)
540 	} while (rc = -ELOOP, ++num_links < MAX_NESTED_LINKS);
545 	if (rc && server->leaf_fullpath != old_fullpath)
549 	return rc;
554 	int rc;
586 		rc = -ENOMEM;
594 		rc = ops->tree_connect(xid, tcon->ses, tree, tcon, nlsc);
608 		rc = ops->tree_connect(xid, tcon->ses, tcon->tree_name, tcon,
613 	rc = tree_connect_dfs_target(xid, tcon, cifs_sb, tree, ref.server_type == DFS_TYPE_LINK,
621 	if (rc) {
634 	return rc;