/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
 * Copyright 2022 RackTop Systems, Inc.
 */

/*
 * Dispatch function for SMB2_QUERY_INFO
 */

#include <smbsrv/smb2_kproto.h>
#include <smbsrv/smb_fsops.h>
#include <smbsrv/ntifs.h>

/*
 * MS-FSA 2.1.5.20 Server Requests Querying Quota Information
 *
 * Support for this operation is optional. If the object store does not
 * implement this functionality, the operation MUST be failed with
 * STATUS_INVALID_DEVICE_REQUEST
 *
 * Similar to smb_nt_transact_query_quota()
 */
uint32_t
smb2_qinfo_quota(smb_request_t *sr, smb_queryinfo_t *qi)
{
        _NOTE(ARGUNUSED(qi))
        uint8_t         single, restart;
        uint32_t        sidlistlen, startsidlen, startsidoff;
        smb_node_t      *tnode;
        smb_ofile_t     *ofile = sr->fid_ofile;
        smb_quota_query_t request;
        smb_quota_response_t reply;
        uint32_t status = NT_STATUS_SUCCESS;
        int rc;

        bzero(&request, sizeof (smb_quota_query_t));
        bzero(&reply, sizeof (smb_quota_response_t));

        if (!smb_tree_has_feature(sr->tid_tree, SMB_TREE_QUOTA))
                return (NT_STATUS_INVALID_DEVICE_REQUEST);

        if ((ofile->f_node == NULL) ||
            (ofile->f_ftype != SMB_FTYPE_DISK))
                return (NT_STATUS_INVALID_DEVICE_REQUEST);

        rc = smb_mbc_decodef(
            &sr->smb_data, "bb..lll",
            &single,            /* b */
            &restart,           /* b */
            /* reserved           .. */
            &sidlistlen,        /* l */
            &startsidlen,       /* l */
            &startsidoff);      /* l */
        if (rc)
                return (NT_STATUS_INVALID_PARAMETER);

        if ((sidlistlen != 0) && (startsidlen != 0))
                return (NT_STATUS_INVALID_PARAMETER);


        tnode = sr->tid_tree->t_snode;
        request.qq_root_path = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
        if (smb_node_getmntpath(tnode, request.qq_root_path, MAXPATHLEN) != 0) {
                kmem_free(request.qq_root_path, MAXPATHLEN);
                return (NT_STATUS_INVALID_PARAMETER);
        }

        if (sidlistlen != 0)
                request.qq_query_op = SMB_QUOTA_QUERY_SIDLIST;
        else if (startsidlen != 0)
                request.qq_query_op = SMB_QUOTA_QUERY_STARTSID;
        else
                request.qq_query_op = SMB_QUOTA_QUERY_ALL;

        request.qq_single = single;
        request.qq_restart = restart;
        smb_quota_max_quota(&sr->raw_data, &request);

        status = smb_quota_init_sids(&sr->smb_data, &request, ofile);

        if (status == NT_STATUS_SUCCESS) {
                if (smb_quota_query(sr->sr_server, &request, &reply) != 0) {
                        status = NT_STATUS_INTERNAL_ERROR;
                } else {
                        status = reply.qr_status;
                        if (status == NT_STATUS_SUCCESS) {
                                status = smb_quota_encode_quotas(
                                    &sr->raw_data,
                                    &request, &reply, ofile);
                        }
                        xdr_free(smb_quota_response_xdr, (char *)&reply);
                }
        }

        kmem_free(request.qq_root_path, MAXPATHLEN);
        smb_quota_free_sids(&request);

        if (status != NT_STATUS_SUCCESS) {
                if (status == NT_STATUS_NO_MORE_ENTRIES) {
                        smb_ofile_set_quota_resume(ofile, NULL);
                        smbsr_warn(sr, status, 0, 0);
                        status = NT_STATUS_SUCCESS;
                } else {
                        smbsr_error(sr, status, 0, 0);
                }
        }

        return (status);
}