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| author | Aurelien Aptel <aaptel@suse.com> | 2018-09-20 18:10:25 -0700 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2018-10-23 21:16:05 -0500 |
| commit | 8393072bab060f0a05888ee31543175d44b5dde0 (patch) | |
| tree | cfc22288674c170a1699b78fa752baaa82071aa4 /fs/cifs/connect.c | |
| parent | 9e1a37dad4f3b9f1d36d9fd27021bbd67fb8c85f (diff) | |
| download | talos-obmc-linux-8393072bab060f0a05888ee31543175d44b5dde0.tar.gz talos-obmc-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/connect.c')
| -rw-r--r-- | fs/cifs/connect.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 106d3a85f77b..6221aef45ff5 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3086,10 +3086,6 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) if (rc) goto out_fail; - if (volume_info->nodfs) { - tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; - cifs_dbg(FYI, "DFS disabled (%d)\n", tcon->Flags); - } tcon->use_persistent = false; /* check if SMB2 or later, CIFS does not support persistent handles */ if (volume_info->persistent) { @@ -3664,6 +3660,8 @@ int cifs_setup_cifs_sb(struct smb_vol *pvolume_info, cifs_sb->actimeo = pvolume_info->actimeo; cifs_sb->local_nls = pvolume_info->local_nls; + if (pvolume_info->nodfs) + cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_DFS; if (pvolume_info->noperm) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; if (pvolume_info->setuids) @@ -3820,6 +3818,9 @@ expand_dfs_referral(const unsigned int xid, struct cifs_ses *ses, struct dfs_info3_param *referrals = NULL; char *full_path = NULL, *ref_path = NULL, *mdata = NULL; + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS) + return -EREMOTE; + full_path = build_unc_path_to_root(volume_info, cifs_sb); if (IS_ERR(full_path)) return PTR_ERR(full_path); |
