[Qemu-devel] qemu qemu-img.c

[Fabrice Bellard <fabrice@bellard.org>]

CVSROOT:	/sources/qemu
Module name:	qemu
Changes by:	Fabrice Bellard <bellard>	06/06/14 15:32:10

Modified files:
	.              : qemu-img.c 

Log message:
	show real allocated disk image size on Windows (Frediano Ziglio)

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/qemu-img.c?cvsroot=qemu&r1=1.8&r2=1.9

Patches:
Index: qemu-img.c
===================================================================
RCS file: /sources/qemu/qemu/qemu-img.c,v
retrieving revision 1.8
retrieving revision 1.9
diff -u -b -r1.8 -r1.9
--- qemu-img.c	24 Jul 2005 18:44:55 -0000	1.8
+++ qemu-img.c	14 Jun 2006 15:32:10 -0000	1.9
@@ -23,6 +23,10 @@
  */
 #include "vl.h"
 
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
 void *get_mmap_addr(unsigned long size)
 {
     return NULL;
@@ -598,7 +602,19 @@
 #ifdef _WIN32
 static int64_t get_allocated_file_size(const char *filename)
 {
+    typedef DWORD (WINAPI * get_compressed_t)(const char *filename, DWORD *high);
+    get_compressed_t get_compressed;
     struct _stati64 st;
+
+    /* WinNT support GetCompressedFileSize to determine allocate size */
+    get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA");
+    if (get_compressed) {
+    	DWORD high, low;
+    	low = get_compressed(filename, &high);
+    	if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR)
+	    return (((int64_t) high) << 32) + low;
+    }
+
     if (_stati64(filename, &st) < 0) 
         return -1;
     return st.st_size;