On Tue, 20 Jun 2006 12:49:25 +0200, Jan-Espen Pettersen wrote:
Can a win32 program expect that it has write access to the memory
pointed to by the return value of LoadResource with module 0x00400000?
Should LoadResource in some cases copy the memory and return a
writeable copy of the resource?
I noticed a similar problem under Windows Server 2003 when DEP is enabled, but haven't seen it on other platforms. If I recall, there is code in version.dll which calls LoadResource with RT_VERSION and then expects to be able to write to pages that are clearly marked not-writable in the PE image. The pages remain read-only until after a call to GetVersionInfo so something in the kernel is altering them. I didn't dig into it, but thought it was really weird. When I turn off DEP for that program I got different behavior. I don't know what this means for wine but maybe that is useful.
Jonathan
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Jonathan Clark