Commits on Oct 17, 2024

1. syscalls: switch to rustix for most of our syscalls …

   Using libc leads to several issues when dealing with multiarch that make
   things quite frustrating, and rustix does provide nicer APIs (for the
   most part -- some are a little wonky). One major annoyance is that
   building for musl leads to annoying build failures because musl uses
   differently-sized or differently-signed types, which we don't want to
   care about because we just want to use the actual kernel APIs. Also,
   musl is missing wrappers for things like statx(2) which we need to use.
   
   We still need syscall wrappers to provide nice error information, but we
   can remove most of the internal-only bitflags and unsafe blocks. The
   only syscall wrapper we don't switch to rustix is openat2 because
   rustix's API is not designed to be extensible and so we can stick with
   libc for now.
   
   In the future we might want to consider migrating away from libc
   entirely (to linux_raw_sys) to reduce the code bloat of having two
   different syscall wrappers.
   
   Signed-off-by: Aleksa Sarai <[email protected]>

   

   cyphar committed Oct 17, 2024
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