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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * DFS referral cache routines
- *
- * Copyright (c) 2018-2019 Paulo Alcantara <palcantara@suse.de>
- */
- #ifndef _CIFS_DFS_CACHE_H
- #define _CIFS_DFS_CACHE_H
- #include <linux/nls.h>
- #include <linux/list.h>
- #include "cifsglob.h"
- struct dfs_cache_tgt_list {
- int tl_numtgts;
- struct list_head tl_list;
- };
- struct dfs_cache_tgt_iterator {
- char *it_name;
- int it_path_consumed;
- struct list_head it_list;
- };
- extern int dfs_cache_init(void);
- extern void dfs_cache_destroy(void);
- extern const struct proc_ops dfscache_proc_ops;
- extern int dfs_cache_find(const unsigned int xid, struct cifs_ses *ses,
- const struct nls_table *nls_codepage, int remap,
- const char *path, struct dfs_info3_param *ref,
- struct dfs_cache_tgt_list *tgt_list);
- extern int dfs_cache_noreq_find(const char *path, struct dfs_info3_param *ref,
- struct dfs_cache_tgt_list *tgt_list);
- extern int dfs_cache_update_tgthint(const unsigned int xid,
- struct cifs_ses *ses,
- const struct nls_table *nls_codepage,
- int remap, const char *path,
- const struct dfs_cache_tgt_iterator *it);
- extern int
- dfs_cache_noreq_update_tgthint(const char *path,
- const struct dfs_cache_tgt_iterator *it);
- extern int dfs_cache_get_tgt_referral(const char *path,
- const struct dfs_cache_tgt_iterator *it,
- struct dfs_info3_param *ref);
- extern int dfs_cache_add_vol(char *mntdata, struct smb_vol *vol,
- const char *fullpath);
- extern int dfs_cache_update_vol(const char *fullpath,
- struct TCP_Server_Info *server);
- extern void dfs_cache_del_vol(const char *fullpath);
- extern int dfs_cache_get_tgt_share(char *path, const struct dfs_cache_tgt_iterator *it,
- char **share, char **prefix);
- static inline struct dfs_cache_tgt_iterator *
- dfs_cache_get_next_tgt(struct dfs_cache_tgt_list *tl,
- struct dfs_cache_tgt_iterator *it)
- {
- if (!tl || list_empty(&tl->tl_list) || !it ||
- list_is_last(&it->it_list, &tl->tl_list))
- return NULL;
- return list_next_entry(it, it_list);
- }
- static inline struct dfs_cache_tgt_iterator *
- dfs_cache_get_tgt_iterator(struct dfs_cache_tgt_list *tl)
- {
- if (!tl)
- return NULL;
- return list_first_entry_or_null(&tl->tl_list,
- struct dfs_cache_tgt_iterator,
- it_list);
- }
- static inline void dfs_cache_free_tgts(struct dfs_cache_tgt_list *tl)
- {
- struct dfs_cache_tgt_iterator *it, *nit;
- if (!tl || list_empty(&tl->tl_list))
- return;
- list_for_each_entry_safe(it, nit, &tl->tl_list, it_list) {
- list_del(&it->it_list);
- kfree(it->it_name);
- kfree(it);
- }
- tl->tl_numtgts = 0;
- }
- static inline const char *
- dfs_cache_get_tgt_name(const struct dfs_cache_tgt_iterator *it)
- {
- return it ? it->it_name : NULL;
- }
- static inline int
- dfs_cache_get_nr_tgts(const struct dfs_cache_tgt_list *tl)
- {
- return tl ? tl->tl_numtgts : 0;
- }
- #endif /* _CIFS_DFS_CACHE_H */
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