From 14e562ada2b152cdeb49a1aec40fac402d19f3ce Mon Sep 17 00:00:00 2001 From: Ronnie Sahlberg Date: Mon, 3 Sep 2018 13:33:50 +1000 Subject: cifs: create a define for the max number of iov we need for a SMB2 set_info So we don't overflow the io vector arrays accidentally Signed-off-by: Ronnie Sahlberg Signed-off-by: Steve French --- fs/cifs/smb2pdu.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'fs/cifs/smb2pdu.h') diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index 8fb7887f2b3d..600e8fe1461b 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -1174,6 +1174,15 @@ struct smb2_query_info_rsp { __u8 Buffer[1]; } __packed; +/* + * Maximum number of iovs we need for a set-info request. + * The largest one is rename/hardlink + * [0] : struct smb2_set_info_req + smb2_file_[rename|link]_info + * [1] : path + * [2] : compound padding + */ +#define SMB2_SET_INFO_IOV_SIZE 3 + struct smb2_set_info_req { struct smb2_sync_hdr sync_hdr; __le16 StructureSize; /* Must be 33 */ -- cgit v1.2.3