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cifs: Fix DFS cache refresher for DFS links

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As per MS-DFSC, when a DFS cache entry is expired and it is a DFS
link, then a new DFS referral must be sent to root server in order to
refresh the expired entry.

This patch ensures that all new DFS referrals for refreshing the cache
are sent to DFS root.

Signed-off-by: Paulo Alcantara (SUSE) <paulo@paulo.ac>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Paulo Alcantara (SUSE)
2019-03-19 16:54:29 -03:00
committed by Steve French
parent f5307104e7
commit 5072010ccf
4 changed files with 151 additions and 25 deletions
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5
fs/cifs/dfs_cache.h
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@@ -2,7 +2,7 @@
/*
* DFS referral cache routines
*
* Copyright (c) 2018 Paulo Alcantara <palcantara@suse.de>
* Copyright (c) 2018-2019 Paulo Alcantara <palcantara@suse.de>
*/
#ifndef _CIFS_DFS_CACHE_H
@@ -43,7 +43,8 @@ dfs_cache_noreq_update_tgthint(const char *path,
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(struct smb_vol *vol, const char *fullpath);
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);