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diff --git a/EdkUnixPkg/Include/Protocol/UnixThunk.h b/EdkUnixPkg/Include/Protocol/UnixThunk.h
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+++ b/EdkUnixPkg/Include/Protocol/UnixThunk.h
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+/*++
+
+Copyright (c) 2004, Intel Corporation                                                         
+All rights reserved. This program and the accompanying materials                          
+are licensed and made available under the terms and conditions of the BSD License         
+which accompanies this distribution.  The full text of the license may be found at        
+http://opensource.org/licenses/bsd-license.php                                            
+                                                                                          
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+
+Module Name:
+
+  UnixThunk.h
+
+Abstract:
+
+  This protocol allows an EFI driver in the Unix emulation environment
+  to make Posix calls.
+
+  NEVER make an Unix call directly, always make the call via this protocol.
+
+  There are no This pointers on the protocol member functions as they map
+  exactly into Unix system calls.
+
+--*/
+
+#ifndef _UNIX_THUNK_H_
+#define _UNIX_THUNK_H_
+
+
+#define EFI_UNIX_THUNK_PROTOCOL_GUID \
+  { \
+    0xf2e98868, 0x8985, 0x11db, {0x9a, 0x59, 0x00, 0x40, 0xd0, 0x2b, 0x18, 0x35 } \
+  }
+
+typedef
+VOID
+(*UnixSleep) (
+  unsigned long Milliseconds
+  );
+
+typedef
+VOID
+(*UnixExit) (
+  int status  // exit code for all threads
+  );
+
+typedef
+VOID
+(*UnixSetTimer) (UINT64 PeriodMs, VOID (*CallBack)(UINT64 DeltaMs));
+typedef
+VOID
+(*UnixGetLocalTime) (EFI_TIME *Time);
+typedef
+struct tm *
+(*UnixGmTime)(const time_t *timep);
+typedef
+long
+(*UnixGetTimeZone)(void);
+typedef
+int
+(*UnixGetDayLight)(void);
+typedef
+int
+(*UnixPoll)(struct pollfd *pfd, int nfds, int timeout);
+typedef
+int
+(*UnixRead) (int fd, void *buf, int count);
+typedef
+int
+(*UnixWrite) (int fd, const void *buf, int count);
+typedef
+char *
+(*UnixGetenv) (const char *var);
+typedef
+int
+(*UnixOpen) (const char *name, int flags, int mode);
+typedef
+long int
+(*UnixSeek) (int fd, long int off, int whence);
+typedef
+int
+(*UnixFtruncate) (int fd, long int len);
+typedef
+int
+(*UnixClose) (int fd);
+
+typedef
+int
+(*UnixMkdir)(const char *pathname, mode_t mode);
+typedef
+int
+(*UnixRmDir)(const char *pathname);
+typedef
+int
+(*UnixUnLink)(const char *pathname);
+typedef
+int
+(*UnixGetErrno)(VOID);
+typedef
+DIR *
+(*UnixOpenDir)(const char *pathname);
+typedef
+void
+(*UnixRewindDir)(DIR *dir);
+typedef
+struct dirent *
+(*UnixReadDir)(DIR *dir);
+typedef
+int
+(*UnixCloseDir)(DIR *dir);
+typedef
+int
+(*UnixStat)(const char *path, struct stat *buf);
+typedef
+int
+(*UnixStatFs)(const char *path, struct statfs *buf);
+typedef
+int
+(*UnixRename)(const char *oldpath, const char *newpath);
+typedef
+time_t
+(*UnixMkTime)(struct tm *tm);
+typedef
+int
+(*UnixFSync)(int fd);
+typedef
+int
+(*UnixChmod)(const char *path, mode_t mode);
+typedef
+int
+(*UnixUTime)(const char *filename, const struct utimbuf *buf);
+
+struct _EFI_UNIX_UGA_IO_PROTOCOL;
+typedef
+EFI_STATUS
+(*UnixUgaCreate)(struct _EFI_UNIX_UGA_IO_PROTOCOL **UgaIo,
+		 CONST CHAR16 *Title);
+
+//
+//
+//
+
+#define EFI_UNIX_THUNK_PROTOCOL_SIGNATURE EFI_SIGNATURE_32 ('L', 'N', 'X', 'T')
+
+typedef struct _EFI_UNIX_THUNK_PROTOCOL {
+  UINT64                              Signature;
+
+  UnixSleep                          Sleep;
+  UnixExit                    	      Exit;
+  UnixSetTimer                       SetTimer;
+  UnixGetLocalTime		      GetLocalTime;
+  UnixGmTime                          GmTime;
+  UnixGetTimeZone                     GetTimeZone;
+  UnixGetDayLight                     GetDayLight;
+  UnixPoll	                      Poll;
+  UnixRead                           Read;
+  UnixWrite                          Write;
+  UnixGetenv                         Getenv;
+  UnixOpen                           Open;
+  UnixSeek                           Lseek;
+  UnixFtruncate                      FTruncate;
+  UnixClose                          Close;
+  UnixMkdir                           MkDir;
+  UnixRmDir                           RmDir;
+  UnixUnLink                          UnLink;
+  UnixGetErrno                        GetErrno;
+  UnixOpenDir                         OpenDir;
+  UnixRewindDir                       RewindDir;
+  UnixReadDir                         ReadDir;
+  UnixCloseDir                        CloseDir;
+  UnixStat                            Stat;
+  UnixStatFs                          StatFs;
+  UnixRename                          Rename;
+  UnixMkTime                          MkTime;
+  UnixFSync                           FSync;
+  UnixChmod                           Chmod;
+  UnixUTime                           UTime;
+
+  UnixUgaCreate			      UgaCreate;
+
+} EFI_UNIX_THUNK_PROTOCOL;
+
+extern EFI_GUID gEfiUnixThunkProtocolGuid;
+
+#endif