40 	const char *path;  member
68  * dfs_cache_canonical_path - get a canonical DFS path
70  * @path: DFS path
74  * Return canonical path if success, otherwise error.
76 char *dfs_cache_canonical_path(const char *path, const struct nls_table *cp, int remap)  in dfs_cache_canonical_path()  argument
82 	if (!path || strlen(path) < 3 || (*path != '\\' && *path != '/'))  in dfs_cache_canonical_path()
86 		tmp = (char *)cifs_strndup_to_utf16(path, strlen(path), &plen, cp, remap);  in dfs_cache_canonical_path()
88 			cifs_dbg(VFS, "%s: failed to convert path to utf16\n", __func__);  in dfs_cache_canonical_path()
96 			cifs_dbg(VFS, "%s: failed to convert path from utf16\n", __func__);  in dfs_cache_canonical_path()
100 		npath = kstrdup(path, GFP_KERNEL);  in dfs_cache_canonical_path()
129 	cifs_dbg(FYI, "%s: %s\n", __func__, ce->path);  in flush_cache_ent()
131 	kfree(ce->path);  in flush_cache_ent()
173 …"cache entry: path=%s,type=%s,ttl=%d,etime=%ld,hdr_flags=0x%x,ref_flags=0x%x,interlink=%s,path_con…  in dfscache_proc_show()
174 				   ce->path, ce->srvtype == DFS_TYPE_ROOT ? "root" : "link",  in dfscache_proc_show()
240 …cifs_dbg(FYI, "cache entry: path=%s,type=%s,ttl=%d,etime=%ld,hdr_flags=0x%x,ref_flags=0x%x,interli…  in dump_ce()
241 		 ce->path,  in dump_ce()
430 	ce->path = refs[0].path_name;  in alloc_cache_entry()
438 		kfree(ce->path);  in alloc_cache_entry()
533 static struct cache_entry *__lookup_cache_entry(const char *path, unsigned int hash, int len)  in __lookup_cache_entry()  argument
538 		if (dfs_path_equal(ce->path, strlen(ce->path), path, len)) {  in __lookup_cache_entry()
547  * Find a DFS cache entry in hash table and optionally check prefix path against normalized @path.
549  * Use whole path components in the match.  Must be called with htable_rw_lock held.
555 static struct cache_entry *lookup_cache_entry(const char *path)  in lookup_cache_entry()  argument
559 	const char *s = path, *e;  in lookup_cache_entry()
568 		rc = cache_entry_hash(path, strlen(path), &hash);  in lookup_cache_entry()
571 		return __lookup_cache_entry(path, hash, strlen(path));  in lookup_cache_entry()
574 	 * Handle paths that have more than two path components and are a complete prefix of the DFS  in lookup_cache_entry()
575 	 * referral request path (@path).  in lookup_cache_entry()
579 	e = path + strlen(path) - 1;  in lookup_cache_entry()
589 		len = e + 1 - path;  in lookup_cache_entry()
590 		rc = cache_entry_hash(path, len, &hash);  in lookup_cache_entry()
593 		ce = __lookup_cache_entry(path, hash, len);  in lookup_cache_entry()
644 static int get_dfs_referral(const unsigned int xid, struct cifs_ses *ses, const char *path,  in get_dfs_referral()  argument
658 	cifs_dbg(FYI, "%s: ipc=%s referral=%s\n", __func__, ses->tcon_ipc->tree_name, path);  in get_dfs_referral()
659 	rc =  ses->server->ops->get_dfs_refer(xid, ses, path, refs, numrefs, cache_cp,  in get_dfs_referral()
683 					      const char *path,  in cache_refresh_path()  argument
691 	cifs_dbg(FYI, "%s: search path: %s\n", __func__, path);  in cache_refresh_path()
695 	ce = lookup_cache_entry(path);  in cache_refresh_path()
717 	rc = get_dfs_referral(xid, ses, path, &refs, &numrefs);  in cache_refresh_path()
727 	ce = lookup_cache_entry(path);  in cache_refresh_path()
754 static int setup_referral(const char *path, struct cache_entry *ce,  in setup_referral()  argument
763 	ref->path_name = kstrdup(path, GFP_ATOMIC);  in setup_referral()
836  * for @path and create a new entry.
839  * for @path and then update the respective cache entry.
846  * @remap: path character remapping type
847  * @path: path to lookup in DFS referral cache.
855 		   int remap, const char *path, struct dfs_info3_param *ref,  in dfs_cache_find()  argument
862 	npath = dfs_cache_canonical_path(path, cp, remap);  in dfs_cache_find()
873 		rc = setup_referral(path, ce, ref, get_tgt_name(ce));  in dfs_cache_find()
891  * expired, nor create a new cache entry if @path hasn't been found. It heavily
894  * @path: canonical DFS path to lookup in the DFS referral cache.
902 int dfs_cache_noreq_find(const char *path, struct dfs_info3_param *ref,  in dfs_cache_noreq_find()  argument
908 	cifs_dbg(FYI, "%s: path: %s\n", __func__, path);  in dfs_cache_noreq_find()
912 	ce = lookup_cache_entry(path);  in dfs_cache_noreq_find()
919 		rc = setup_referral(path, ce, ref, get_tgt_name(ce));  in dfs_cache_noreq_find()
935  * expired, nor create a new cache entry if @path hasn't been found. It heavily
938  * @path: canonical DFS path to lookup in DFS referral cache.
944 void dfs_cache_noreq_update_tgthint(const char *path, const struct dfs_cache_tgt_iterator *it)  in dfs_cache_noreq_update_tgthint()  argument
949 	if (!path || !it)  in dfs_cache_noreq_update_tgthint()
952 	cifs_dbg(FYI, "%s: path: %s\n", __func__, path);  in dfs_cache_noreq_update_tgthint()
956 	ce = lookup_cache_entry(path);  in dfs_cache_noreq_update_tgthint()
982  * @path: canonical DFS path to lookup in DFS referral cache.
988 int dfs_cache_get_tgt_referral(const char *path, const struct dfs_cache_tgt_iterator *it,  in dfs_cache_get_tgt_referral()  argument
997 	cifs_dbg(FYI, "%s: path: %s\n", __func__, path);  in dfs_cache_get_tgt_referral()
1001 	ce = lookup_cache_entry(path);  in dfs_cache_get_tgt_referral()
1009 	rc = setup_referral(path, ce, ref, it->it_name);  in dfs_cache_get_tgt_referral()
1016 /* Extract share from DFS target and return a pointer to prefix path or NULL */
1043  * @path: DFS full path
1046  * @prefix: prefix path.
1050 int dfs_cache_get_tgt_share(char *path, const struct dfs_cache_tgt_iterator *it, char **share,  in dfs_cache_get_tgt_share()  argument
1060 	if (!it || !path || !share || !prefix || strlen(path) < it->it_path_consumed)  in dfs_cache_get_tgt_share()
1071 	/* point to prefix in DFS referral path */  in dfs_cache_get_tgt_share()
1072 	dfsref_ppath = path + it->it_path_consumed;  in dfs_cache_get_tgt_share()
1078 	/* merge prefix paths from DFS referral path and target node */  in dfs_cache_get_tgt_share()
1183 	const char *path;  in refresh_ses_referral()  local
1188 	path = dfs_ses_refpath(ses);  in refresh_ses_referral()
1189 	if (IS_ERR(path)) {  in refresh_ses_referral()
1190 		rc = PTR_ERR(path);  in refresh_ses_referral()
1201 	ce = cache_refresh_path(xid, ses, path, false);  in refresh_ses_referral()
1212 				   const char *path,  in __refresh_tcon_referral()  argument
1235 	ce = lookup_cache_entry(path);  in __refresh_tcon_referral()
1259 	const char *path;  in refresh_tcon_referral()  local
1267 	path = dfs_ses_refpath(ses);  in refresh_tcon_referral()
1268 	if (IS_ERR(path)) {  in refresh_tcon_referral()
1269 		rc = PTR_ERR(path);  in refresh_tcon_referral()
1274 	ce = lookup_cache_entry(path);  in refresh_tcon_referral()
1289 	rc = get_dfs_referral(xid, ses, path, &refs, &numrefs);  in refresh_tcon_referral()
1291 		rc = __refresh_tcon_referral(tcon, path, refs,  in refresh_tcon_referral()
1333 	 * Force the use of prefix path to support failover on DFS paths that resolve to targets  in dfs_cache_remount_fs()