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winmm: Only compute dwFileSize for MMIO objects with a DOS ioproc.

This commit is contained in:
Eric Pouech 2010-06-13 15:41:01 +02:00 committed by Alexandre Julliard
parent 0f234ce461
commit 258d42982c
1 changed files with 7 additions and 1 deletions
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8
dlls/winmm/mmio.c
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@ -667,7 +667,13 @@ static HMMIO MMIO_Open(LPSTR szFileName, MMIOINFO* refmminfo, DWORD dwOpenFlags,
(LPARAM)szFileName, 0, FALSE); (LPARAM)szFileName, 0, FALSE);
/* grab file size, when possible */ /* grab file size, when possible */
if ((pos = _llseek((HFILE)wm->info.adwInfo[0], 0, SEEK_CUR)) != -1) /* FIXME: the code around dwFileSize is:
* - probably broken
* - needs to be tested when the app installs its own IOproc
* - likely to be removed
* So, restrict dwFileSize usage to DOS ioprocs
*/
if (wm->info.fccIOProc == FOURCC_DOS && (pos = _llseek((HFILE)wm->info.adwInfo[0], 0, SEEK_CUR)) != -1)
{ {
wm->dwFileSize = _llseek((HFILE)wm->info.adwInfo[0], 0, SEEK_END); wm->dwFileSize = _llseek((HFILE)wm->info.adwInfo[0], 0, SEEK_END);
_llseek((HFILE)wm->info.adwInfo[0], pos, SEEK_SET); _llseek((HFILE)wm->info.adwInfo[0], pos, SEEK_SET);