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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2014 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Dispatch function for SMB2_OPLOCK_BREAK
*/
#include <smbsrv/smb2_kproto.h>
/*
* SMB2 Oplock Break Acknowledgement
* [MS-SMB2 2.2.24]
*/
smb_sdrc_t
smb2_oplock_break_ack(smb_request_t *sr)
{
smb_node_t *node;
smb2fid_t smb2fid;
uint32_t status;
uint16_t StructSize;
uint8_t OplockLevel;
uint8_t brk;
int rc = 0;
/*
* Decode the SMB2 Oplock Break Ack.
*/
rc = smb_mbc_decodef(
&sr->smb_data, "wb5.qq",
&StructSize, /* w */
&OplockLevel, /* b */
/* reserved 5. */
&smb2fid.persistent, /* q */
&smb2fid.temporal); /* q */
if (rc || StructSize != 24)
return (SDRC_ERROR);
status = smb2sr_lookup_fid(sr, &smb2fid);
if (status)
goto errout;
if ((node = sr->fid_ofile->f_node) == NULL) {
/* Not a regular file */
status = NT_STATUS_INVALID_PARAMETER;
goto errout;
}
/*
* Process the oplock break ack. We only expect levels
* at or below the hightest break levels we send, which is
* currently SMB2_OPLOCK_LEVEL_II.
*/
switch (OplockLevel) {
case SMB2_OPLOCK_LEVEL_NONE: /* 0x00 */
brk = SMB_OPLOCK_BREAK_TO_NONE;
break;
case SMB2_OPLOCK_LEVEL_II: /* 0x01 */
brk = SMB_OPLOCK_BREAK_TO_LEVEL_II;
break;
/* We don't break to these levels (yet). */
case SMB2_OPLOCK_LEVEL_EXCLUSIVE: /* 0x08 */
case SMB2_OPLOCK_LEVEL_BATCH: /* 0x09 */
case SMB2_OPLOCK_LEVEL_LEASE: /* 0xFF */
default: /* gcc -Wuninitialized */
status = NT_STATUS_INVALID_PARAMETER;
goto errout;
}
smb_oplock_ack(node, sr->fid_ofile, brk);
/*
* Generate SMB2 Oplock Break response
* [MS-SMB2] 2.2.25
*/
StructSize = 24;
(void) smb_mbc_encodef(
&sr->reply, "wb5.qq",
StructSize, /* w */
OplockLevel, /* b */
/* reserved 5. */
smb2fid.persistent, /* q */
smb2fid.temporal); /* q */
return (SDRC_SUCCESS);
errout:
smb2sr_put_error(sr, status);
return (SDRC_SUCCESS);
}
/*
* Compose an SMB2 Oplock Break Notification packet, including
* the SMB2 header and everything, in sr->reply.
* The caller will send it and free the request.
*/
void
smb2_oplock_break_notification(smb_request_t *sr, uint8_t brk)
{
smb_ofile_t *ofile = sr->fid_ofile;
smb2fid_t smb2fid;
uint16_t StructSize;
uint8_t OplockLevel;
switch (brk) {
default:
ASSERT(0);
/* FALLTHROUGH */
case SMB_OPLOCK_BREAK_TO_NONE:
OplockLevel = SMB2_OPLOCK_LEVEL_NONE;
break;
case SMB_OPLOCK_BREAK_TO_LEVEL_II:
OplockLevel = SMB2_OPLOCK_LEVEL_II;
break;
}
/*
* SMB2 Header
*/
sr->smb2_cmd_code = SMB2_OPLOCK_BREAK;
sr->smb2_hdr_flags = SMB2_FLAGS_SERVER_TO_REDIR;
sr->smb_tid = ofile->f_tree->t_tid;
sr->smb_pid = 0;
sr->smb_uid = 0;
sr->smb2_messageid = UINT64_MAX;
(void) smb2_encode_header(sr, B_FALSE);
/*
* SMB2 Oplock Break, variable part
*/
StructSize = 24;
smb2fid.persistent = 0;
smb2fid.temporal = ofile->f_fid;
(void) smb_mbc_encodef(
&sr->reply, "wb5.qq",
StructSize, /* w */
OplockLevel, /* b */
/* reserved 5. */
smb2fid.persistent, /* q */
smb2fid.temporal); /* q */
}
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