From: Paulo Alcantara <pc@manguebit.com>
Date: Tue, 27 Jun 2023 21:24:50 -0300
Subject: [PATCH] smb: client: improve DFS mount check
Git-commit: 5f2a0afa9890e728428db2ed9281bddca242e90b
References: bsc#1193629
Patch-mainline: v6.5-rc1
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: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Paulo Alcantara <palcantara@suse.de>
---
fs/smb/client/dfs.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/smb/client/dfs.c b/fs/smb/client/dfs.c
index dd06b8a0ff7a..26d14dd0482e 100644
--- a/fs/smb/client/dfs.c
+++ b/fs/smb/client/dfs.c
@@ -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;
}
}
--
2.41.0