mirror of https://gitee.com/openkylin/linux.git
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/* 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 */
|