Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.11 743/775] cifs: fix nodfs mount option | Date | Mon, 1 Mar 2021 17:15:11 +0100 |
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From: Paulo Alcantara <pc@cjr.nz>
commit d01132ae50207bb6fd94e08e80c2d7b839408086 upstream.
Skip DFS resolving when mounting with 'nodfs' even if CONFIG_CIFS_DFS_UPCALL is enabled.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Cc: stable@vger.kernel.org # 5.11 Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- fs/cifs/connect.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
--- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3366,15 +3366,15 @@ int cifs_mount(struct cifs_sb_info *cifs rc = mount_get_conns(ctx, cifs_sb, &xid, &server, &ses, &tcon); /* - * Unconditionally try to get an DFS referral (even cached) to determine whether it is an - * DFS mount. + * If called with 'nodfs' mount option, then skip DFS resolving. Otherwise unconditionally + * try to get an DFS referral (even cached) to determine whether it is an DFS mount. * * Skip prefix path to provide support for DFS referrals from w2k8 servers which don't seem * to respond with PATH_NOT_COVERED to requests that include the prefix. */ - if (dfs_cache_find(xid, ses, cifs_sb->local_nls, cifs_remap(cifs_sb), ctx->UNC + 1, NULL, + if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS) || + dfs_cache_find(xid, ses, cifs_sb->local_nls, cifs_remap(cifs_sb), ctx->UNC + 1, NULL, NULL)) { - /* No DFS referral was returned. Looks like a regular share. */ if (rc) goto error; /* Check if it is fully accessible and then mount it */
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