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/*
* 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 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Copyright 2018 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Dispatch function for SMB2_IOCTL
* [MS-SMB2] 3.3.5.15
*/
#include <smbsrv/smb2_kproto.h>
#include <smb/winioctl.h>
smb_sdrc_t
smb2_ioctl(smb_request_t *sr)
{
smb2fid_t smb2fid;
smb_fsctl_t fsctl;
mbuf_chain_t in_mbc;
uint32_t InputOffset;
uint32_t MaxInputResp;
uint32_t OutputOffset;
uint32_t Flags;
uint32_t status = 0;
uint16_t StructSize;
uint16_t DeviceType;
int rc = 0;
/* Todo: put fsctl in sr->arg.ioctl (visible in dtrace probes) */
bzero(&in_mbc, sizeof (in_mbc));
/*
* Decode SMB2 Ioctl request
*/
rc = smb_mbc_decodef(
&sr->smb_data, "w..lqqlllllll4.",
&StructSize, /* w */
/* reserved .. */
&fsctl.CtlCode, /* l */
&smb2fid.persistent, /* q */
&smb2fid.temporal, /* q */
&InputOffset, /* l */
&fsctl.InputCount, /* l */
&MaxInputResp, /* l */
&OutputOffset, /* l */
&fsctl.OutputCount, /* l */
&fsctl.MaxOutputResp, /* l */
&Flags); /* l */
/* reserved2 4. */
if (rc || StructSize != 57)
return (SDRC_ERROR);
/*
* If there's an input buffer, setup a shadow.
*/
if (fsctl.InputCount) {
if (InputOffset < (SMB2_HDR_SIZE + 56))
return (SDRC_ERROR);
if (fsctl.InputCount > smb2_max_trans)
return (SDRC_ERROR);
rc = MBC_SHADOW_CHAIN(&in_mbc, &sr->smb_data,
sr->smb2_cmd_hdr + InputOffset, fsctl.InputCount);
if (rc) {
return (SDRC_ERROR);
}
}
fsctl.in_mbc = &in_mbc;
/*
* If output is possible, setup the output mbuf_chain
*/
if (fsctl.MaxOutputResp > smb2_max_trans)
fsctl.MaxOutputResp = smb2_max_trans;
sr->raw_data.max_bytes = fsctl.MaxOutputResp;
fsctl.out_mbc = &sr->raw_data;
/*
* [MS-SMB2] 3.3.5.15
*
* If the Flags field of the request is not SMB2_0_IOCTL_IS_FSCTL
* the server MUST fail the request with STATUS_NOT_SUPPORTED.
*
* If the CtlCode is any of (... see switch below...) and the
* value of FileId in the SMB2 Header of the request is not
* 0xFFFFFFFFFFFFFFFF, then the server MUST fail the request
* with STATUS_INVALID_PARAMETER. (Otherwise lookup the FID.)
*/
if (Flags != SMB2_0_IOCTL_IS_FSCTL) {
status = NT_STATUS_NOT_SUPPORTED;
} else switch (fsctl.CtlCode) {
case FSCTL_DFS_GET_REFERRALS:
case FSCTL_DFS_GET_REFERRALS_EX:
case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
case FSCTL_VALIDATE_NEGOTIATE_INFO:
case FSCTL_PIPE_WAIT:
if (smb2fid.temporal != ~0LL ||
smb2fid.persistent != ~0LL) {
status = NT_STATUS_INVALID_PARAMETER;
}
break;
default:
status = smb2sr_lookup_fid(sr, &smb2fid);
if (status != 0) {
status = NT_STATUS_FILE_CLOSED;
}
break;
}
/*
* Keep FID lookup before the start probe.
*/
DTRACE_SMB2_START(op__Ioctl, smb_request_t *, sr);
if (status)
goto errout;
/*
* Dispatch to the handler for CtlCode
* See CTL_CODE() in winioctl.h
*/
DeviceType = fsctl.CtlCode >> 16;
switch (DeviceType) {
case FILE_DEVICE_DFS: /* 6 */
status = smb_dfs_fsctl(sr, &fsctl);
break;
case FILE_DEVICE_FILE_SYSTEM: /* 9 */
status = smb2_fsctl_fs(sr, &fsctl);
break;
case FILE_DEVICE_NAMED_PIPE: /* 17 */
status = smb_opipe_fsctl(sr, &fsctl);
break;
case FILE_DEVICE_NETWORK_FILE_SYSTEM: /* 20 */
status = smb2_fsctl_netfs(sr, &fsctl);
break;
default:
status = NT_STATUS_NOT_SUPPORTED;
break;
}
errout:
sr->smb2_status = status;
DTRACE_SMB2_DONE(op__Ioctl, smb_request_t *, sr);
if (status != 0) {
/*
* NT status codes with severity "error" normally cause
* an error response with no data. However, there are
* exceptions like smb2_fsctl_copychunk that may return
* severity==error _with_ a data part.
*/
if ((NT_SC_SEVERITY(status) == NT_STATUS_SEVERITY_ERROR) &&
(fsctl.CtlCode != FSCTL_SRV_COPYCHUNK) &&
(fsctl.CtlCode != FSCTL_SRV_COPYCHUNK_WRITE)) {
/* no error data */
smb2sr_put_error(sr, status);
return (SDRC_SUCCESS);
}
/* Else, error response _with_ data. */
}
fsctl.InputCount = 0;
InputOffset = SMB2_HDR_SIZE + 48;
fsctl.OutputCount = MBC_LENGTH(&sr->raw_data);
OutputOffset = (fsctl.OutputCount) ? InputOffset : 0;
/*
* Encode SMB2 Ioctl reply
*/
StructSize = 49;
rc = smb_mbc_encodef(
&sr->reply, "w..lqqlllll4.#C",
StructSize, /* w */
/* reserved .. */
fsctl.CtlCode, /* l */
smb2fid.persistent, /* q */
smb2fid.temporal, /* q */
InputOffset, /* l */
fsctl.InputCount, /* l */
OutputOffset, /* l */
fsctl.OutputCount, /* l */
0, /* Flags l */
/* reserved2 4. */
fsctl.OutputCount, /* # */
&sr->raw_data); /* C */
if (rc)
sr->smb2_status = NT_STATUS_INTERNAL_ERROR;
return (SDRC_SUCCESS);
}
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