Eric Kohl wrote:
Hello!
I'm currently debugging a database-application that uses the M$ Jet Engine 3.5. This db-engine does not behave very well. It opens an exisisting database-file (FILE_FLAG_OVERLAPPED is *not* set) and reads or writes using calls to ReadFile() and WriteFile() with non-zero lpOverlapped pointers. In this case calls to ReadFile() or WriteFile() return FALSE.
IMO ReadFile() and WriteFile() should check whether FILE_FLAG_OVERLAPPED is set. Unfortunately there is no method to retrieve the full file attributes from wineserver. Is a new server call required?
a quick hack would be to extend the get_file_info request to add to the flags field the high WORD from inner file object
(the low word contains the FILE_ATTRIBUTE_??? flags and we should get the bits from the stat operation)
however, it would add a stat to the file for every call which is not what you want in all cases
Index: server/file.c =================================================================== RCS file: /home/cvs/cvsroot/wine/wine/server/file.c,v retrieving revision 1.36 diff -u -r1.36 file.c --- server/file.c 2001/01/12 23:02:39 1.36 +++ server/file.c 2001/02/03 18:17:22 @@ -267,6 +267,8 @@ if (S_ISDIR(st.st_mode)) req->attr = FILE_ATTRIBUTE_DIRECTORY; else req->attr = FILE_ATTRIBUTE_ARCHIVE; if (!(st.st_mode & S_IWUSR)) req->attr |= FILE_ATTRIBUTE_READONLY; + /* copy back only the FILE_FLAG_??? bits */ + req->attr |= file->flags & 0xffff0000; req->access_time = st.st_atime; req->write_time = st.st_mtime; req->size_high = 0;