Comments (2)
Even though this may appear convenient at first, I'm very sceptical about making unix
into an emulation layer. I'd rather have unix
's goal be focusing on providing API bindings for system calls provided by the underlying OS, unless there's a generic and portable fallback implementation possible that accurately implements the required semantics.
I'm strongly against starting to clutter the code with all sorts of #if darwin_HOST_OS
conditionals, as this violates Autoconf's philosophy of checking for features rather than os/versions.
from unix.
fcntl
is documented by posix: https://pubs.opengroup.org/onlinepubs/007904975/functions/fcntl.html
We seem to have a module for it: https://github.com/haskell/unix/blob/master/System/Posix/Fcntl.hsc
But no binding to it.
The main caveat is that fcntl
is a variadic function. With the capi
calling convention we can interface with such functions, but still have to give them a constant number of arguments: https://downloads.haskell.org/~ghc/8.10.7/docs/html/users_guide/ffi-chap.html?highlight=capi#varargs-not-supported-by-ccall-calling-convention
So I'm not sure how useful a raw binding would be here.
My guess would be someone can implement an alternative to fdatasync
in a new library?
from unix.
Related Issues (20)
- Remove config.sub
- Revitalise System.Posix.DynamicLinker.Module
- Consider paring down the set of output modes HOT 7
- Include GHC 9.4 in CI ? HOT 4
- System library dependencies not documented HOT 3
- Build error with wasm32-wasi: system `wasi' not recognized HOT 11
- `unix-2.8` release for GHC 9.6 HOT 4
- `System.Posix.Env.ByteString.getEnvironment` segfaults on empty environment HOT 5
- NetBSD CI broken HOT 1
- System.Posix.User stopped exporting UserEntry HOT 3
- Should `mkstemp` use `throwErrnoIfMinus1Retry` instead of `throwErrnoIfMinus1`? HOT 3
- Add CI for the JS backend
- getAllGroupEntries fail on rhel8 HOT 23
- Memory unsafety in `withFilePath` in 2.8.2.0 HOT 6
- 2.8.3.0 fails to build on Linux 6.1.62 / glibc 2.35 HOT 2
- Release 2.8.4.0 HOT 10
- waitToSetLock can block but is an unsafe FFI import HOT 6
- Please revise time dependency to < 1.15 HOT 4
- CI: caching is likely broken
- Add portable support for file open with data caching supressed/eliminated. HOT 6
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from unix.