NEX-1643 dtrace provider for smbsrv
Reviewed by: Evan Layton <evan.layton@nexenta.com>
Reviewed by: Matt Barden <matt.barden@nexenta.com>
NEX-6041 Should pass the smbtorture lock tests
Reviewed by: Matt Barden <matt.barden@nexenta.com>
Reviewed by: Kevin Crowe <kevin.crowe@nexenta.com>

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  
  /*
   * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
   */
  
  /*
   * SMB: unlock_byte_range
   *
*** 54,78 ****
  #include <smbsrv/smb_kproto.h>
  
  smb_sdrc_t
  smb_pre_unlock_byte_range(smb_request_t *sr)
  {
!         DTRACE_SMB_1(op__UnlockByteRange__start, smb_request_t *, sr);
          return (SDRC_SUCCESS);
  }
  
  void
  smb_post_unlock_byte_range(smb_request_t *sr)
  {
!         DTRACE_SMB_1(op__UnlockByteRange__done, smb_request_t *, sr);
  }
  
  smb_sdrc_t
  smb_com_unlock_byte_range(smb_request_t *sr)
  {
          uint32_t        Length;
          uint32_t        Offset;
          DWORD           result;
  
          if (smbsr_decode_vwv(sr, "wll", &sr->smb_fid, &Length, &Offset) != 0)
                  return (SDRC_ERROR);
  
--- 55,80 ----
  #include <smbsrv/smb_kproto.h>
  
  smb_sdrc_t
  smb_pre_unlock_byte_range(smb_request_t *sr)
  {
!         DTRACE_SMB_START(op__UnlockByteRange, smb_request_t *, sr);
          return (SDRC_SUCCESS);
  }
  
  void
  smb_post_unlock_byte_range(smb_request_t *sr)
  {
!         DTRACE_SMB_DONE(op__UnlockByteRange, smb_request_t *, sr);
  }
  
  smb_sdrc_t
  smb_com_unlock_byte_range(smb_request_t *sr)
  {
          uint32_t        Length;
          uint32_t        Offset;
+         uint32_t        lk_pid;
          DWORD           result;
  
          if (smbsr_decode_vwv(sr, "wll", &sr->smb_fid, &Length, &Offset) != 0)
                  return (SDRC_ERROR);
  
*** 80,91 ****
          if (sr->fid_ofile == NULL) {
                  smbsr_error(sr, NT_STATUS_INVALID_HANDLE, ERRDOS, ERRbadfid);
                  return (SDRC_ERROR);
          }
  
!         result = smb_unlock_range(sr, sr->fid_ofile->f_node,
!             (u_offset_t)Offset, (uint64_t)Length);
          if (result != NT_STATUS_SUCCESS) {
                  smbsr_error(sr, NT_STATUS_RANGE_NOT_LOCKED,
                      ERRDOS, ERROR_NOT_LOCKED);
                  return (SDRC_ERROR);
          }
--- 82,96 ----
          if (sr->fid_ofile == NULL) {
                  smbsr_error(sr, NT_STATUS_INVALID_HANDLE, ERRDOS, ERRbadfid);
                  return (SDRC_ERROR);
          }
  
!         /* Note: SMB1 locking uses 16-bit PIDs. */
!         lk_pid = sr->smb_pid & 0xFFFF;
! 
!         result = smb_unlock_range(sr, (uint64_t)Offset, (uint64_t)Length,
!             lk_pid);
          if (result != NT_STATUS_SUCCESS) {
                  smbsr_error(sr, NT_STATUS_RANGE_NOT_LOCKED,
                      ERRDOS, ERROR_NOT_LOCKED);
                  return (SDRC_ERROR);
          }