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Re: Documenting functions
by Alexandre Julliard 02 Aug '01

02 Aug '01

Francois Gouget <fgouget(a)free.fr> writes: > So I think the functions implemented in Wine should be fully > documented. And the only place to do that is in the code source because > this is the only place where they have a remote chance of staying up to > date (and also where it's most practical to have it). I have to disagree here. Yes it would be nice to have a free Win API documentation, but it definitely doesn't belong inside the Wine source. First it would be a huge bloat in the source; and more importantly the Wine source doesn't define the Windows API, it is defined by Microsoft. > Of course developpers are very well-known for hating to document > stuff so it's going to be pretty hard to get proper documentation. But > we should encourage all Wine developpers to write good documentation for > the functions they implement/fix, not dissuade them to do so. I'd much rather have developers spend their time writing code. Making them duplicate the whole MSDN documentation would be a huge waste of their time. Our resources are not infinite, and it's much more useful to have 100% API coverage with no docs at all than 50% coverage and tons of docs. > Also I agree with you that the strict minimum is to at least document > all the undocumented/weird behaviors. Especially since without some sort > of documentation the next developper may be tempted to remove what looks > like unnecessarily convoluted/obviously wrong code. That should be done with comments inside the code itself. And in many cases it would actually be better to comment the places where the behavior is not right. What I mean is, instead of adding a comment on every line stating "yes this is what Windows does", I'd prefer adding a comment/FIXME to mark the lines that have been written without checking whether Windows really does it this way. -- Alexandre Julliard julliard(a)winehq.com

2 1

Dont allow SetSelectorBase to change into an kernel region
by Uwe Bonnes 01 Aug '01

01 Aug '01

Hallo, galep3 crashes with following sequence: 096c7b38:Call KERNEL.189: SETSELECTORLIMIT(0x0d87,0x0000045f) ret=02e7:6fb5 ds=099f 096c7b38:Ret KERNEL.189: SETSELECTORLIMIT() retval=0x0d87 ret=02e7:6fb5 ds=099f 096c7b38:Call KERNEL.187: SETSELECTORBASE(0x0d87,0xc02924e0) ret=02e7:6fc1 ds=099f 096c7b38:Ret KERNEL.187: SETSELECTORBASE() retval=0x0d87 ret=02e7:6fc1 ds=099f ... Unhandled exception: page fault on read access to 0xc0292545 Obviously the application trys to reach some kernel memory. If I only allow to set the selector base when (selector base + selector limit) is smaller than 0x8000000, the application goes on and lets me read an eprom plugged into the Galep3 Programmer. Is the appended fix a right acceptable? Index: wine/memory/selector.c =================================================================== RCS file: /home/wine/wine/memory/selector.c,v retrieving revision 1.39 diff -u -r1.39 selector.c --- wine/memory/selector.c 19 Jul 2001 00:39:10 -0000 1.39 +++ wine/memory/selector.c 1 Aug 2001 17:30:48 -0000 @@ -327,7 +327,12 @@ LDT_ENTRY entry; wine_ldt_get_entry( sel, &entry ); wine_ldt_set_base( &entry, DOSMEM_MapDosToLinear(base) ); - wine_ldt_set_entry( sel, &entry ); + if ((base + wine_ldt_copy.limit[sel >> __AHSHIFT]) > 0x8000000) + { + FIXME("Illegal region base %lx limit %lx\n", base,wine_ldt_copy.limit[sel >> __AHSHIFT]); + } + else + wine_ldt_set_entry( sel, &entry ); return sel; } Bye -- Uwe Bonnes bon(a)elektron.ikp.physik.tu-darmstadt.de Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------

1 1

Strange window handle in the trace
by Marco Bizzarri <m.bizzarri＠icube.it> 01 Aug '01

01 Aug '01

Hi all. I'm working on a no-windows installation. The system is a RH 6.2 system, upgraded to the latest patches. I've installed XFree4 and KDE 2.1 I'm experiencing an unhandled exception when I try to a VC application. The application works (almost) fine until it opens a selection dialog, with a list on it. As you can see from the trace, it is trying to do an RDW_UpdateRgns with a wndPtr of 0xffff Unhandled exception: page fault on read access to 0x08fd506b in 32-bit code (0x406d1771). In 32-bit mode. Symbol h_errno is invalid Symbol hack_digit is invalid 0x406d1771 (RDW_UpdateRgns+0x3c9 [painting.c:720] in libuser32.so): testb $ 0x10,0x6b(%esi) 720 if( wnd->dwStyle & WS_VISIBLE ) Wine-dbg>bt Backtrace: =>0 0x406d1771 (RDW_UpdateRgns+0x3c9(wndPtr=0xffff, hRgn=0x0, flags=0x180, firstRecursLevel=0x0) [painting.c:720] in libuser32.so) (ebp=405b1bc4) 1 0x406d1787 (RDW_UpdateRgns+0x3df(wndPtr=0x40377824, hRgn=0x0, flags=0x180, firstRecursLevel=0x0) [painting.c:721] in libuser32.so) (ebp=405b1c20) 2 0x406d1787 (RDW_UpdateRgns+0x3df(wndPtr=0x40377538, hRgn=0x0, flags=0x180, firstRecursLevel=0x1) [painting.c:721] in libuser32.so) (ebp=405b1c7c) 3 0x406d1e08 (RedrawWindow+0x38c(hwnd=0x43f0, rectUpdate=0x0, hrgnUpdate=0x0, flags=0x180) [painting.c:982] in libuser32.so) (ebp=405b1cd4) 4 0x406d1f1d (UpdateWindow+0x21(hwnd=0x43f0) [painting.c:1015] in libuser32.so) (ebp=405b1cf0) 5 0x0043df7a (<Debugged process>.EntryPoint+0x13625 in <Debugged process>) (ebp=0046e660) 6 0x00000623 (ebp=000044e4) Just for "fun", I've tryied to add checks for 0xffff, but it crashes when it enters non Wine DLL (actually they are Spread dlls from Farpoint) Any clue? Thanks you all in advance Bye Marco -- Marco Bizzarri - Responsabile Tecnico - Icube S.r.l. Sede: Via Ridolfi 15 - 56124 Pisa (PI), Italia E-mail: m.bizzarri(a)icube.it WWW: www.icube.it Tel: (+39) 050 97 02 07 Fax: (+39) 050 31 36 588

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CloseHandle with 0xffffffff parameter
by Marco Bizzarri 01 Aug '01

01 Aug '01

Hi All. While trying to make an application working under wine, I've stumped into the following trace fragment, obtained with --debugmsg +relay: 081612c8:Call kernel32.CreateFileA(405f6454 "c:\\rs\\project\\apitest\\vc\\32\\apitestvc60\\debug\\ret_dll.pdb",80000000,00000001,00000000,00000003,00000080,00000000) ret=404aa001 081612c8:Ret kernel32.CreateFileA() retval=ffffffff ret=404aa001 081612c8:Call kernel32.CloseHandle(ffffffff) ret=404aa0bd 081612c8:Ret kernel32.CloseHandle() retval=00000000 ret=404aa0bd As you can see, the program is trying to open a file, which is not found. An invalid handle (ffffffff) is returned. The program however closes the handle. My question is: is this correct? Should the CloseHandle check to see if it is a correct handle? Thank you all in advance Marco Bizzarri -- Marco Bizzarri - Responsabile Tecnico - Icube S.r.l. Sede: Via Ridolfi 15 - 56124 Pisa (PI), Italia E-mail: m.bizzarri(a)icube.it WWW: www.icube.it Tel: (+39) 050 97 02 07 Fax: (+39) 050 31 36 588

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Documenting functions
by Bill Medland 01 Aug '01

01 Aug '01

Getting back to what we are and are not allowed to do.. Suppose I am looking at a low-level function that I believe is only 75%-complete (the most important 75% of course and no disrespect meant to those who have got it that far). One of the problems with it is it is not totally clear EXACTLY what the function should do in some of its more esoteric modes. To me the first task is to define what it should do and that should be part of the documentation of the function. The particular function currently does not have any true documentation within the code; the best documentation of what it does is the code itself, and the best documentation of what it should do is the MSDN description of the function. 1. Should the function be completely defined in its header in the source code (which will probably make the header twice as large as the function) or should the details be put somewhere else. 2. Are we walking into copyright danger if the Wine documentation of the function is clearly based on the MSDN documentation, even if we acknowledge that. 3. Are we interested in that level of documentation? Bill

4 3

Re: Patch to fix the Linux 2.2 joysitck interface
by Alexandre Julliard 31 Jul '01

31 Jul '01

David Hagood <wowbagger(a)sktc.net> writes: > To be done: the file descriptor is never closed under normal > circumstances - this might be a problem if a Wine app is opened and > accesses the stick, as the file descriptor will be open until that > process terminates. If this is viewed as a problem, it would be a simple > matter to add a device close function to the Wine driver to close the FD. Shouldn't this be done in the driver DRV_OPEN/DRV_CLOSE calls then? Any joystick experts out there? (BTW please use diff -u to generate patches, the default diff format is unreadable). -- Alexandre Julliard julliard(a)winehq.com

1 0

Re: RFC: Patch for making GrabPointer work
by Alexandre Julliard 31 Jul '01

31 Jul '01

Jukka Heinonen <jhei(a)iki.fi> writes: > Storing old windows procedure in struct x11drv_win_data > would remove the worst race, but unless window > procedure update is atomic, it would not remove > all races. Since you have the window locked when changing the wnd proc the update will be atomic. The only problem I see is that your wnd proc might get called to process some other message, but you can solve this by having it chain to the previous wnd proc for all messages except the special one. -- Alexandre Julliard julliard(a)winehq.com

2 1

Relocatoion and ExceptionFilter problem?
by EriK W 30 Jul '01

30 Jul '01

Now I finally made a wine , :) But I can't get any program to excute so far, mostly It is like bash-2.03# wine --winver win95 sol.exe err:seh:UnhandledExceptionFilter Couldn't start debugger (debugger/winedbg 134639312 24) (2) Read the Wine Developers Guide on how to set up winedbg or another debugger or bash-2.03# wine --winver win98 icq2000b.exe err:win32:do_relocations Standard load address for a Win32 program not available - patched kernel ? err:win32:do_relocations FATAL: Need to relocate F:\export\home\ericw\system\icq2000b.exe, but no relocation records present (stripped during link). Try to run that file directly ! wine: can't exec 'icq2000b.exe': error=21 This wine seems taste not good, :) Francois Gouget wrote: > On Thu, 26 Jul 2001, EriK W wrote: > > > > What does not work? Do you have unicode/libwine_unicode.so or not? > > > Does the following command run or does it say it cannot find > > > libwine_unicode.so? > > > > > I does have the libwine_unicode.so > > but it just don't go to ~unicode directory to search for it, it always > > report " can't find it in /usr/local/lib" I don't know why, I am using bash, > > so I just simply copied libwine_unicode.so over to make it happy. > > I was wondering if it was the shell not exporting the environment > variable or something. Since you're using bash it should be all fine. > So you have to figure out why setting LD_LIBRARY_PATH does not work. > It's supposed to work. I'm 99.9% sure I did use it on Sparc Solaris so I > really don't see why it would not work on Solaris x86. Plus > LD_LIBRARY_PATH is such an important thing that it would be very > surprising if it really did not work and nothing else was broken in your > system. > > Did you try specifying an absolute path like: > LD_LIBRARY_PATH=/export/home/system/wine-20010629/unicode ./tools/winebuild/winebuild > > What does 'echo $LD_LIBRARY_PATH' normally say? Is it empty? > > [...] > > take it out? > > Can I do that by commenting " > > LIBPROGRAMS = \ > > debugger/winedbg" ? > > The following patch should do that nicely: > > --- cut here --- > Index: Makefile.in > =================================================================== > RCS file: /home/wine/wine/debugger/Makefile.in,v > retrieving revision 1.24 > diff -u -r1.24 Makefile.in > --- Makefile.in 2000/12/29 05:38:00 1.24 > +++ Makefile.in 2001/07/27 01:39:15 > @@ -3,7 +3,7 @@ > TOPOBJDIR = .. > SRCDIR = @srcdir@ > VPATH = @srcdir@ > -MODULE = winedbg > +MODULE = #winedbg > > C_SRCS = \ > break.c \ > --- Makefile.orig Thu Jul 26 19:03:36 2001 > +++ Makefile Thu Jul 26 19:00:53 2001 > @@ -3,7 +3,7 @@ > TOPSRCDIR = .. > TOPOBJDIR = .. > SRCDIR = . > -MODULE = winedbg > +MODULE = #winedbg > > C_SRCS = \ > break.c \ > --- cut here --- > > -- > Francois Gouget fgouget(a)free.fr http://fgouget.free.fr/ > Broadcast message : fin du monde dans cinq minutes, repentez vous !

2 2

RE: Small OpenGL patch
by Patrik Stridvall 30 Jul '01

30 Jul '01

> It also puts the 'make_opengl' script in line with the latest > modification > to the spec file. It also changes the OPENGL32.@ to OPENGL.@ > as per Patrik's > modifications in 'make_opengl'. Arrgghhh! I just saw that I didn't do the same change in the script as in the .c files (I didn't run the script, since it worked badly last time I tried with my OpenGL files). Braino. :-( It should of course be OPENGL32.@ not OPENGL.@. The .c files was correct as they were. Sorry to cause you problems but can you fix the script and rerun on your OpenGL files and resubmit. > PS: god I hate Perl... I may well rewrite 'make_opengl' in > Python one of > these days :-) Whats wrong with Perl? I write applications sometimes in Perl and sometimes in Python, and I like them both and a dislike somethings about each language as well. Of course Perl is a little more difficult to learn but still. PS. You will se one of the advantages of Perl if you add use strict; at the top of the script. Of course after that you will have to declare all variable to it keeps the number of bugs down.

1 0

RE: winapi update
by Patrik Stridvall 30 Jul '01

30 Jul '01

> > In short, please apply it, they facillitates using the > > winapi tools alot and might make more people actually > > use them. They don't hurt anything. > > The problem is if we make it part of the default make install all Wine > distributions will include these non-functional (from the user POV) > scripts, and I don't think this is a good idea. That is true. > So I have applied it > but it doesn't run by default; developers who want it should run make > install in the tools/winapi directory. Ah, of course. Good idea. Thanks. This brings to mind the fact that three different kinds of "users": 1. Ordinary users 2. Wine/Winelib developers 3. Winelib application developers that need different kinds of tools installed. Not that I have any good solution to the problem. And not something that really is a problem either. Is was just something that occured to me. Oh well. Never mind.

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