[klibc] klibc and what's the next step?
H. Peter Anvin
hpa at zytor.com
Tue Jul 11 11:22:18 PDT 2006
Olaf Hering wrote:
> "It would be nice if ..." someone can build a list of things that
> changed over time. Say from 2.0.0 to 2.6.18. Just struct layouts and defines.
> I havent tried it, but one would hope that the /bin/ls from SuSE 5.3 still
> works today. Guess its time for me to actually try that the next days.
You know how much code there is in glibc to make your /bin/ls still work?
That being said, it in general isn't a problem to continue to use the
same exact sets of system calls, but that also means skipping any new
functionality. In recent memory that includes things like 64-bit file
offsets and high signals, even more recently it means things like
openat() and splice(). A full-blown libc also has to deal with
LinuxThreads version NPTL. Etc.
Again, I fully expect that klibc-0.1 still works on the current kernels,
but current klibc wouldn't work on 2.4 kernels.
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