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cifs: handle reconnect of tcon when there is no cached dfs referral

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commit 507345b5ae6a57b7ecd7550ff39282ed20de7b8d upstream.

When there is no cached DFS referral of tcon->dfs_path, then reconnect
to same share.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paulo Alcantara
2021-07-12 12:38:24 -03:00
committed by Greg Kroah-Hartman
parent b93f949942
commit 72797ffca1
1 changed files with 2 additions and 4 deletions
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6
fs/cifs/connect.c
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@@ -5352,7 +5352,8 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru
if (!tree) if (!tree)
return -ENOMEM; return -ENOMEM;
if (!tcon->dfs_path) { /* If it is not dfs or there was no cached dfs referral, then reconnect to same share */
if (!tcon->dfs_path || dfs_cache_noreq_find(tcon->dfs_path + 1, &ref, &tl)) {
if (tcon->ipc) { if (tcon->ipc) {
scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$", server->hostname); scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$", server->hostname);
rc = ops->tree_connect(xid, tcon->ses, tree, tcon, nlsc); rc = ops->tree_connect(xid, tcon->ses, tree, tcon, nlsc);
@@ -5362,9 +5363,6 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru
goto out; goto out;
} }
rc = dfs_cache_noreq_find(tcon->dfs_path + 1, &ref, &tl);
if (rc)
goto out;
isroot = ref.server_type == DFS_TYPE_ROOT; isroot = ref.server_type == DFS_TYPE_ROOT;
free_dfs_info_param(&ref); free_dfs_info_param(&ref);