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 <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
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@ -56,7 +56,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
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struct kvec rsp_iov[3];
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struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
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struct kvec qi_iov[1];
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struct kvec si_iov[3]; /* 2 + potential padding. */
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struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
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struct kvec close_iov[1];
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struct smb2_query_info_rsp *qi_rsp = NULL;
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int flags = 0;
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@ -1174,6 +1174,15 @@ struct smb2_query_info_rsp {
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__u8 Buffer[1];
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} __packed;
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/*
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* Maximum number of iovs we need for a set-info request.
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* The largest one is rename/hardlink
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* [0] : struct smb2_set_info_req + smb2_file_[rename|link]_info
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* [1] : path
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* [2] : compound padding
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*/
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#define SMB2_SET_INFO_IOV_SIZE 3
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struct smb2_set_info_req {
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struct smb2_sync_hdr sync_hdr;
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__le16 StructureSize; /* Must be 33 */
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