Commit 5f2a0afa authored by Paulo Alcantara's avatar Paulo Alcantara Committed by Steve French
Browse files

smb: client: improve DFS mount check 



Some servers may return error codes from REQ_GET_DFS_REFERRAL requests
that are unexpected by the client, so to make it easier, assume
non-DFS mounts when the client can't get the initial DFS referral of
@ctx->UNC in dfs_mount_share().

Signed-off-by: default avatarPaulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 3ae872de

fs/smb/client/dfs.c

+3 −2
Original line number Diff line number Diff line
@@ -264,8 +264,9 @@ int dfs_mount_share(struct cifs_mount_ctx *mnt_ctx, bool *isdfs) 
	if (!nodfs) {

		rc = dfs_get_referral(mnt_ctx, ctx->UNC + 1, NULL, NULL);

		if (rc) {

			if (rc != -ENOENT && rc != -EOPNOTSUPP && rc != -EIO)

				return rc;

			cifs_dbg(FYI, "%s: no dfs referral for %s: %d\n",

				 __func__, ctx->UNC + 1, rc);

			cifs_dbg(FYI, "%s: assuming non-dfs mount...\n", __func__);

			nodfs = true;

		}

	}