[PATCH v1 3/6] fs/cifs: always use ipc for DFS resolving ioctls

From: Aurelien Aptel <aaptel-IBi9RG/b67k@public.gmane.org>
To: linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Aurelien Aptel <aaptel-IBi9RG/b67k@public.gmane.org>
Subject: [PATCH v1 3/6] fs/cifs: always use ipc for DFS resolving ioctls
Date: Tue,  8 Nov 2016 17:33:23 +0100	[thread overview]
Message-ID: <1478622806-19636-4-git-send-email-aaptel@suse.com> (raw)
In-Reply-To: <1478622806-19636-1-git-send-email-aaptel-IBi9RG/b67k@public.gmane.org>

since we cannot access the ipc tcon object, force the use of the ipc tid
when crafting DFS resolving ioctl.

Signed-off-by: Aurelien Aptel <aaptel-IBi9RG/b67k@public.gmane.org>
---
 fs/cifs/smb2pdu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 5ca5ea46..6d5b8db 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1645,6 +1645,10 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
 	if (rc)
 		return rc;
 
+	/* XXX: how can we access the tcon of the IPC of the host? */
+	if (opcode == FSCTL_DFS_GET_REFERRALS) {
+		req->hdr.TreeId = ses->ipc_tid;
+	}
 	req->CtlCode = cpu_to_le32(opcode);
 	req->PersistentFileId = persistent_fid;
 	req->VolatileFileId = volatile_fid;
-- 
2.1.4
