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| author | Paulo Alcantara <pc@manguebit.com> | 2023-06-26 16:04:17 -0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2023-06-28 15:48:43 -0500 |
| commit | 3ae872de410751fe5e629e04da491a632d95201c (patch) | |
| tree | 1b6696082b30c6838302910fee6959f3a9a7b59a /fs/smb/client/cifsproto.h | |
| parent | 49024ec8795ed2bd7217c249ef50a70c4e25d662 (diff) | |
| download | linux-stable-3ae872de410751fe5e629e04da491a632d95201c.tar.gz linux-stable-3ae872de410751fe5e629e04da491a632d95201c.tar.bz2 linux-stable-3ae872de410751fe5e629e04da491a632d95201c.zip | |
smb: client: fix shared DFS root mounts with different prefixes
When having two DFS root mounts that are connected to same namespace,
same mount options but different prefix paths, we can't really use the
shared @server->origin_fullpath when chasing DFS links in them.
Move the origin_fullpath field to cifs_tcon structure so when having
shared DFS root mounts with different prefix paths, and we need to
chase any DFS links, dfs_get_automount_devname() will pick up the
correct full path out of the @tcon that will be used for the new
mount.
Before patch
mount.cifs //dom/dfs/dir /mnt/1 -o ...
mount.cifs //dom/dfs /mnt/2 -o ...
# shared server, ses, tcon
# server: origin_fullpath=//dom/dfs/dir
# @server->origin_fullpath + '/dir/link1'
$ ls /mnt/2/dir/link1
ls: cannot open directory '/mnt/2/dir/link1': No such file or directory
After patch
mount.cifs //dom/dfs/dir /mnt/1 -o ...
mount.cifs //dom/dfs /mnt/2 -o ...
# shared server & ses
# tcon_1: origin_fullpath=//dom/dfs/dir
# tcon_2: origin_fullpath=//dom/dfs
# @tcon_2->origin_fullpath + '/dir/link1'
$ ls /mnt/2/dir/link1
dir0 dir1 dir10 dir3 dir5 dir6 dir7 dir9 target2_file.txt tsub
Fixes: 8e3554150d6c ("cifs: fix sharing of DFS connections")
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/smb/client/cifsproto.h')
| -rw-r--r-- | fs/smb/client/cifsproto.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/smb/client/cifsproto.h b/fs/smb/client/cifsproto.h index 293c54867d94..1d71d658e167 100644 --- a/fs/smb/client/cifsproto.h +++ b/fs/smb/client/cifsproto.h @@ -652,7 +652,7 @@ int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, int resp_buftype, struct cifs_search_info *srch_inf); -struct super_block *cifs_get_tcp_super(struct TCP_Server_Info *server); +struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon); void cifs_put_tcp_super(struct super_block *sb); int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); char *extract_hostname(const char *unc); |