X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=source%2Fio%2Fwindows%2Fhandle.cpp;h=1cdf8ce208ed881d0d5510bc0efb3a93122640ca;hp=e59de273a65ea07d3d42712f1d2394cdc0db018d;hb=c8bf2d6c15893ccc9dbc4e04611b7229029f4808;hpb=817e584903996a041692640720a5a272d847a3c7

diff --git a/source/io/windows/handle.cpp b/source/io/windows/handle.cpp
index e59de27..1cdf8ce 100644
--- a/source/io/windows/handle.cpp
+++ b/source/io/windows/handle.cpp
@@ -1,7 +1,11 @@
+#define NOMINMAX
+#include <limits>
 #include <msp/core/systemerror.h>
 #include "handle.h"
 #include "handle_private.h"
 
+using namespace std;
+
 namespace Msp {
 namespace IO {
 
@@ -13,8 +17,11 @@ void sys_set_inherit(Handle &, bool)
 {
 }
 
-unsigned sys_read(Handle &handle, char *buf, unsigned size)
+size_t sys_read(Handle &handle, char *buf, size_t size)
 {
+	if(size>numeric_limits<DWORD>::max())
+		throw invalid_argument("read");
+
 	DWORD ret;
 	if(ReadFile(*handle, buf, size, &ret, 0)==0)
 		throw system_error("ReadFile");
@@ -22,8 +29,11 @@ unsigned sys_read(Handle &handle, char *buf, unsigned size)
 	return ret;
 }
 
-unsigned sys_write(Handle &handle, const char *buf, unsigned size)
+size_t sys_write(Handle &handle, const char *buf, size_t size)
 {
+	if(size>numeric_limits<DWORD>::max())
+		throw invalid_argument("write");
+
 	DWORD ret;
 	if(WriteFile(*handle, buf, size, &ret, 0)==0)
 		throw system_error("WriteFile");