StdLib: Add isDirSep character classification macro and function. Implement several Posix functions and clean up EfiSysCall.h. Align file mode handling with UEFI file protocol flags.

Include/ctype.h:             Function declaration and Macro definition of isDirSep
Include/unistd.h:            Declarations added from EfiSysCall.h
Include/utime.h:             New file.  For the Posix utime() function.
Include/sys/_ctype.h:        Update character class bit maps.
Include/sys/EfiSysCall.h:    Move declarations to unistd.h
Include/sys/fcntl.h:         Improve comments.  Add UEFI-specific macros.
Include/sys/filio.h:         Remove declarations for unsupported file ioctls.
Include/sys/stat.h:          Fix flags.  Add macros and declarations.
Include/sys/time.h:          Add declarations for new functions Tm2Efi() and Time2Efi().
Include/sys/types.h:         Use EFI-specific instead of BSD-specific definitions for typedefs.
Include/sys/unistd.h:        Delete inappropriate content.  Guard macro definitions.

LibC/Locale/setlocale.c
LibC/Stdio/{fdopen.c, findfp.c, fopen.c, freopen.c, gettemp.c, makebuf.c, mktemp.c,
            remove.c, stdio.c, tempnam.c, tmpfile.c, tmpnam.c}
LibC/Time/{itimer.c, ZoneProc.c}
LibC/Uefi/SysCalls.c
LibC/Uefi/Devices/Console/daConsole.c
LibC/Uefi/Devices/UefiShell/daShell.c
PosixLib/Gen/readdir.c
                             Include unistd.h instead of EfiSysCall.h

LibC/Ctype/CClass.c:         Character classification function implementation for isDirSep.
LibC/Ctype/iCtype.c:         Update character classification and case conversion tables.
LibC/Time/TimeEfi.c:         Improve comments.  Implement new functions Tm2Efi() and Time2Efi().
LibC/Uefi/StubFunctions.c:   Add missing include.  Cosmetic changes to declarations.
LibC/Uefi/SysCalls.c:        Add support function for utime().
LibC/Uefi/Uefi.inf:          Add LibGen library class dependency.
LibC/Uefi/Xform.c:           Enhance Omode2EFI().
LibC/Uefi/Devices/UefiShell/daShell.c:    Enhance da_ShellMkdir.  Implement da_ShellIoctl to set file times.
PosixLib/Gen/access.c:       New file.  Implement the access() function.
PosixLib/Gen/dirname.c:      Enhance to use isDirSep and differentiate between the device, path, and filename components of UEFI Shell-style paths.
PosixLib/Gen/utime.c:        New file.  Implement the utime() function.
PosixLib/Gen/LibGen.inf:     Change MODULE_TYPE.  Add new files.

Signed-off-by: darylm503
Reviewed-by: geekboy15a
Reviewed-by: jljusten
Reviewed-by: Rahul Khana
Reviewed-by: leegrosenbaum


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12800 6f19259b-4bc3-4df7-8a09-765794883524

StdLib/PosixLib/Gen/dirname.c

@@ -1,5 +1,14 @@
 /** @file
 
+  Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials are licensed and made available under
+  the terms and conditions of the BSD License that accompanies this distribution.
+  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
  * Copyright (c) 1997, 2002 The NetBSD Foundation, Inc.
  * All rights reserved.
  *
@@ -30,19 +39,17 @@
     NetBSD: dirname.c,v 1.10 2008/05/10 22:39:40 christos Exp
  */
 #include  <LibConfig.h>
-
 #include <sys/cdefs.h>
 
-//#include "namespace.h"
-//#include <libgen.h>
 #include <limits.h>
+#include  <ctype.h>
 #include <string.h>
 
 #ifdef __weak_alias
 __weak_alias(dirname,_dirname)
 #endif
 
-#if !HAVE_DIRNAME
+#ifdef HAVE_DIRNAME
 char *
 dirname(char *path)
 {
@@ -60,24 +67,34 @@ dirname(char *path)
 
   /* Strip trailing slashes, if any. */
   lastp = path + strlen(path) - 1;
-  while (lastp != path && *lastp == '/')
+  while (lastp != path && isDirSep(*lastp))
     lastp--;
 
   /* Terminate path at the last occurence of '/'. */
   do {
-    if (*lastp == '/') {
+    if (isDirSep(*lastp)) {
       /* Strip trailing slashes, if any. */
-      while (lastp != path && *lastp == '/')
+      while (lastp != path && isDirSep(*lastp))
         lastp--;
 
-      /* ...and copy the result into the result buffer. */
+      /* ...and copy the result into the result buffer.
+        We make sure that there will be room for the terminating NUL
+        and for a final '/', if necessary.
+      */
       len = (lastp - path) + 1 /* last char */;
-      if (len > (PATH_MAX - 1))
-        len = PATH_MAX - 1;
+      if (len > (PATH_MAX - 2))
+        len = PATH_MAX - 2;
 
       memcpy(result, path, len);
+      if(*lastp == ':') {   /* Have we stripped off all except the Volume name? */
+        if(isDirSep(lastp[1])) { /* Was ...":/"... so we want the root of the volume. */
+          result[len++] = '/';
+        }
+        else {
+          result[len++] = '.';
+        }
+      }
       result[len] = '\0';
-
       return (result);
     }
   } while (--lastp >= path);