Hi Stefan,
On 2/10/23 10:29, Stefan Thöni wrote:
I'm working on enabling vfs plugins that use libc, specifically a ported
library. The library accesses a hardware device through a file in vfs,
so there is no using a minimal libc implementation as it's the libc's
vfs access that creates the chicken and egg problem preventing vfs
plugins with libc.
...
What do you think about this problem/solution?
without having looked at the code, I got mixed feelings from your
problem statement.
On the one hand, making VFS plugins depend on the (regular) libc is a
direction I would stay away from. I worry that this direction creates
problems, complexities, and wrong expectations that are far more
difficult to handle than stubbing out or emulating a few POSIX calls
from a ported 3rd-party library. The hosting of multiple VFS instances
inside one component may be technically feasible but it is arguably not
natural.
On the other hand, it is laudable that to got this to work.
BTW, the topic reminds me on Cedric's work on FUSE-based file systems
discussed at [1].
[1] https://github.com/genodelabs/genode-world/issues/193
Cheers
Norman
--
Dr.-Ing. Norman Feske
Genode Labs
https://www.genode-labs.com · https://genode.org
Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden
Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth
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