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Known bugs and problems in the OSKit as of January 13, 1999.
I'm sure we've forgotten a bunch of others.
For some of these, more details are in the file `BUGS.details'.
Bugs:
* There is a linking problem with the `-loskit_startup' library when using
GNU binutils 2.x ld in an a.out configuration, we think due to a bug in
that linker. (PR 220)
* The loopback interface does not work in the -lfreebsd_net stack. (PR 11)
* A few device drivers don't pass our testing; see linux/dev/README
for Linux device driver status.
* WIMPi doesn't work with S3 Trio64V+ based video cards (video memory
gets corrupted and the machine will usually hang). It has also
been tested on S3 968, S3 Trio64 and Riva 128 video cards and runs
correctly on them.
Booting-related bugs:
See BUGS.details for more info. We have not had time to look into the
DOS and Linux problems. The third is elusive.
* The DOS boot adapter (dosboot.exe, in boot/dos) doesn't work.
* The Linux boot adapter (in boot/linux) doesn't work on one type of PII
machine we have, but does work on the other four machine types we've
tried. It doesn't work when built with the tool chain on a very recent
Linux distribution but works with slightly older tools. Therefore we
also provide a binary.
* NetBoot (boot/net) occasionally fails on one type of Pentium II machine.
The symptom is hanging or rebooting the machine when the booted
kernel prints "Have return_address 0xXXXXXXXX". It will also
sometimes hang right at the beginning.
Restrictions:
* The OSKit must be compiled with a mininum optimization of
-O (-O1 or -O2) because of problems with inline functions.
* The POSIX threads code has suffered bitrot and does not currently
run in SMP (Symmetric Multiprocessing) mode.
* Missing library dependencies in examples/x86 can cause "make -j" to
mess up. Just re-run it.
* Recently some of our libraries that are commonly used together have
developed more interdependencies than desirable. A result is that you
may have to stick them on the ld line more than once.
* oskit_sendsig_init creates a libc-on-libkernel dependency that we
should remove by replacing it with a dynamic interface or a
function pointer. For now, add another -loskit_kern.
* NetBoot (boot/net) uses a hardcoded name -> IP address table. In the
future it will use real DNS.
* The filesystem libraries (Linux and NetBSD) do permission checking.
This can cause problems when file access routines are built on top
of them. For example, implementing open("foo", O_WRONLY|O_CREAT, 0444)
in terms of the OSKit filesystem primitives doesn't work because
first a file is created with mode 0444 and then it is opened for
writing, which fails because the mode is 0444. Linux and BSD have
similar create and open VFS primitives but permission checking is
done a layer up. The OSKit interfaces should probably be like
that but such a major change requires more investigation.
* The documentation suffers from a number of maladies; see doc/README.doc.
Basic missing features:
* Console code: there is no `pager' so info scrolls off before you
can see it. At Utah we always debug via serial lines to other
machines, so we have not gotten around to adding this.
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