diff options
| author | Paulo Alcantara <pc@cjr.nz> | 2021-11-03 13:53:29 -0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2021-11-10 16:30:13 -0600 |
| commit | c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e (patch) | |
| tree | 136540ddd261ef46cfcfe87b3bc9e47417b45324 /fs/cifs/cifsproto.h | |
| parent | 71e6864eacbef0b2645ca043cdfbac272cb6cea3 (diff) | |
cifs: support nested dfs links over reconnect
Mounting a dfs link that has nested links was already supported at
mount(2), so make it work over reconnect as well.
Make the following case work:
* mount //root/dfs/link /mnt -o ...
- final share: /server/share
* in server settings
- change target folder of /root/dfs/link3 to /server/share2
- change target folder of /root/dfs/link2 to /root/dfs/link3
- change target folder of /root/dfs/link to /root/dfs/link2
* mount -o remount,... /mnt
- refresh all dfs referrals
- mark current connection for failover
- cifs_reconnect() reconnects to root server
- tree_connect()
* checks that /root/dfs/link2 is a link, then chase it
* checks that root/dfs/link3 is a link, then chase it
* finally tree connect to /server/share2
If the mounted share is no longer accessible and a reconnect had been
triggered, the client will retry it from both last referral
path (/root/dfs/link3) and original referral path (/root/dfs/link).
Any new referral paths found while chasing dfs links over reconnect,
it will be updated to TCP_Server_Info::leaf_fullpath, accordingly.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/cifsproto.h')
| -rw-r--r-- | fs/cifs/cifsproto.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index d0f85b666662..b2697356b5e7 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -607,7 +607,7 @@ int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server); void cifs_put_tcp_super(struct super_block *sb); -int update_super_prepath(struct cifs_tcon *tcon, char *prefix); +int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); char *extract_hostname(const char *unc); char *extract_sharename(const char *unc); @@ -634,4 +634,7 @@ static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) return options; } +struct super_block *cifs_get_tcon_super(struct cifs_tcon *tcon); +void cifs_put_tcon_super(struct super_block *sb); + #endif /* _CIFSPROTO_H */ |