a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross/*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * This file and its contents are supplied under the terms of the
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * Common Development and Distribution License ("CDDL"), version 1.0.
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * You may only use this file in accordance with the terms of version
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * 1.0 of the CDDL.
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross *
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * A full copy of the text of the CDDL should have accompanied this
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * source. A copy of the CDDL is also available via the Internet at
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * http://www.illumos.org/license/CDDL.
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross/*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * Copyright 2014 Nexenta Systems, Inc. All rights reserved.
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross/*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * Dispatch function for SMB2_OPLOCK_BREAK
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross#include <smbsrv/smb2_kproto.h>
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross/*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * SMB2 Oplock Break Acknowledgement
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * [MS-SMB2 2.2.24]
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Rosssmb_sdrc_t
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Rosssmb2_oplock_break_ack(smb_request_t *sr)
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross{
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb_node_t *node;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb2fid_t smb2fid;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross uint32_t status;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross uint16_t StructSize;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross uint8_t OplockLevel;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross uint8_t brk;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross int rc = 0;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * Decode the SMB2 Oplock Break Ack.
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross rc = smb_mbc_decodef(
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross &sr->smb_data, "wb5.qq",
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross &StructSize, /* w */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross &OplockLevel, /* b */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /* reserved 5. */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross &smb2fid.persistent, /* q */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross &smb2fid.temporal); /* q */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross if (rc || StructSize != 24)
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross return (SDRC_ERROR);
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross status = smb2sr_lookup_fid(sr, &smb2fid);
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross if (status)
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross goto errout;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross if ((node = sr->fid_ofile->f_node) == NULL) {
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /* Not a regular file */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross status = NT_STATUS_INVALID_PARAMETER;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross goto errout;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross }
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * Process the oplock break ack. We only expect levels
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * at or below the hightest break levels we send, which is
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * currently SMB2_OPLOCK_LEVEL_II.
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross switch (OplockLevel) {
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross case SMB2_OPLOCK_LEVEL_NONE: /* 0x00 */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross brk = SMB_OPLOCK_BREAK_TO_NONE;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross break;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross case SMB2_OPLOCK_LEVEL_II: /* 0x01 */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross brk = SMB_OPLOCK_BREAK_TO_LEVEL_II;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross break;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /* We don't break to these levels (yet). */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross case SMB2_OPLOCK_LEVEL_EXCLUSIVE: /* 0x08 */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross case SMB2_OPLOCK_LEVEL_BATCH: /* 0x09 */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross case SMB2_OPLOCK_LEVEL_LEASE: /* 0xFF */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross default: /* gcc -Wuninitialized */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross status = NT_STATUS_INVALID_PARAMETER;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross goto errout;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross }
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb_oplock_ack(node, sr->fid_ofile, brk);
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * Generate SMB2 Oplock Break response
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * [MS-SMB2] 2.2.25
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross StructSize = 24;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross (void) smb_mbc_encodef(
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross &sr->reply, "wb5.qq",
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross StructSize, /* w */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross OplockLevel, /* b */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /* reserved 5. */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb2fid.persistent, /* q */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb2fid.temporal); /* q */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross return (SDRC_SUCCESS);
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Rosserrout:
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb2sr_put_error(sr, status);
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross return (SDRC_SUCCESS);
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross}
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross/*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * Compose an SMB2 Oplock Break Notification packet, including
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * the SMB2 header and everything, in sr->reply.
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * The caller will send it and free the request.
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Rossvoid
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Rosssmb2_oplock_break_notification(smb_request_t *sr, uint8_t brk)
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross{
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb_ofile_t *ofile = sr->fid_ofile;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb2fid_t smb2fid;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross uint16_t StructSize;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross uint8_t OplockLevel;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross switch (brk) {
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross default:
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross ASSERT(0);
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /* FALLTHROUGH */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross case SMB_OPLOCK_BREAK_TO_NONE:
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross OplockLevel = SMB2_OPLOCK_LEVEL_NONE;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross break;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross case SMB_OPLOCK_BREAK_TO_LEVEL_II:
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross OplockLevel = SMB2_OPLOCK_LEVEL_II;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross break;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross }
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * SMB2 Header
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross sr->smb2_cmd_code = SMB2_OPLOCK_BREAK;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross sr->smb2_hdr_flags = SMB2_FLAGS_SERVER_TO_REDIR;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross sr->smb_tid = ofile->f_tree->t_tid;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross sr->smb_pid = 0;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross sr->smb_uid = 0;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross sr->smb2_messageid = UINT64_MAX;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross (void) smb2_encode_header(sr, B_FALSE);
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /*
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross * SMB2 Oplock Break, variable part
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross StructSize = 24;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb2fid.persistent = 0;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb2fid.temporal = ofile->f_fid;
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross (void) smb_mbc_encodef(
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross &sr->reply, "wb5.qq",
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross StructSize, /* w */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross OplockLevel, /* b */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross /* reserved 5. */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb2fid.persistent, /* q */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross smb2fid.temporal); /* q */
a90cf9f29973990687fa61de9f1f6ea22e924e40Gordon Ross}