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Work around a problem where WriteFile is asked to write memory

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protected by DIBSection code.
This commit is contained in:
Rein Klazes 2005-05-24 12:50:24 +00:00 committed by Alexandre Julliard
parent 97d1b11ebd
commit 8481c8df81
1 changed files with 10 additions and 0 deletions
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10
dlls/kernel/file.c
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@ -451,6 +451,16 @@ BOOL WINAPI WriteFile( HANDLE hFile, LPCVOID buffer, DWORD bytesToWrite,
status = NtWriteFile(hFile, hEvent, NULL, NULL, piosb, status = NtWriteFile(hFile, hEvent, NULL, NULL, piosb,
buffer, bytesToWrite, poffset, NULL); buffer, bytesToWrite, poffset, NULL);
/* FIXME: NtWriteFile does not always cause page faults, generate them now */
if (status == STATUS_INVALID_USER_BUFFER && !IsBadReadPtr( buffer, bytesToWrite ))
{
status = NtWriteFile(hFile, hEvent, NULL, NULL, piosb,
buffer, bytesToWrite, poffset, NULL);
if (status != STATUS_INVALID_USER_BUFFER)
FIXME("Could not access memory (%p,%ld) at first, now OK. Protected by DIBSection code?\n",
buffer, bytesToWrite);
}
if (status != STATUS_PENDING && bytesWritten) if (status != STATUS_PENDING && bytesWritten)
*bytesWritten = piosb->Information; *bytesWritten = piosb->Information;