[Bug 3019] New: read error on reading from rtlinux FIFO from wine
wine-bugs at winehq.org
Tue May 31 07:50:37 CDT 2005
Summary: read error on reading from rtlinux FIFO from wine
AssignedTo: wine-bugs at winehq.org
ReportedBy: ad at trapdoor.de
i'm using wine to access a realtime application from a windows program by
reading and writing to realtime FIFOs (/dev/rtf*). I used an old system where
it worked fine for me (linux 2.4.19, RTL 3.2pre1, wine 20020804). After I
changed to a new System (linux 2.4.29, RTL 3.2rc1, wine 20050310) read
operations to these FIFOs failed. The windows program and the
realtime-application are the same as before and still run on the old system.
I compared the source-code of the rtlinux FIFO libraries of both versions and
found out, that they are almost equal excepting some cosmetic stuff.
I did the same read operations on normal files and on some other device files
(e.g. /dev/random). This worked as expected. Reading from the FIFO from a
native linux program also works without problems.
The windows program was compiled with a german version of Developer
Studio .NET. The source code i used for testing looks as follows:
Drive W: is mapped to /dev and output of ls -la /dev/rtf1 looks like:
crw-r--r-- 1 root root 150, 1 2005-05-31 13:15 /dev/rtf1
When cCmdFifo.Readstring is called the system hangs. The same happens when
using cCmdFifo.Read instead.
When calling the program with winedbg, the program still hangs. Pressing
CTRL-C does not help getting more debugging information and I'm only able to
exit the debugger by "quit" command (i'm not familar with using winedbg :-( ).
I was not able to compile the old wine version on the new system, so I have no
information whether this version works on this system or not.
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