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| author | Aurelien Aptel | 2018-09-21 03:10:25 +0200 |
|---|---|---|
| committer | Steve French | 2018-10-24 04:16:05 +0200 |
| commit | 8393072bab060f0a05888ee31543175d44b5dde0 (patch) | |
| tree | cfc22288674c170a1699b78fa752baaa82071aa4 /fs/cifs/cifs_dfs_ref.c | |
| parent | smb3: track the instance of each session for debugging (diff) | |
| download | kernel-qcow2-linux-8393072bab060f0a05888ee31543175d44b5dde0.tar.gz kernel-qcow2-linux-8393072bab060f0a05888ee31543175d44b5dde0.tar.xz kernel-qcow2-linux-8393072bab060f0a05888ee31543175d44b5dde0.zip | |
CIFS: make 'nodfs' mount opt a superblock flag
tcon->Flags is only used by SMB1 code and changing it is not permanent
(you lose the setting on tcon reconnect).
* Move the setting to superblock flags (per mount-points).
* Make automount callback exit early when flag present
* Make dfs resolving happening in mount syscall exit early if flag present
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
Diffstat (limited to 'fs/cifs/cifs_dfs_ref.c')
| -rw-r--r-- | fs/cifs/cifs_dfs_ref.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c index 6b61df117fd4..b97c74efd04a 100644 --- a/fs/cifs/cifs_dfs_ref.c +++ b/fs/cifs/cifs_dfs_ref.c @@ -304,12 +304,17 @@ static struct vfsmount *cifs_dfs_do_automount(struct dentry *mntpt) */ mnt = ERR_PTR(-ENOMEM); + cifs_sb = CIFS_SB(mntpt->d_sb); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS) { + mnt = ERR_PTR(-EREMOTE); + goto cdda_exit; + } + /* always use tree name prefix */ full_path = build_path_from_dentry_optional_prefix(mntpt, true); if (full_path == NULL) goto cdda_exit; - cifs_sb = CIFS_SB(mntpt->d_sb); tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) { mnt = ERR_CAST(tlink); |