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Misc yanix fixes (#715)

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* Correctly handle possibly misaligned pointers in readdir

This reapplies #615, which was inadvertently reverted.

* Tidy up unneeded `self::` qualifiers.

* Make Dir's contents private.

Also remove the `unsafe` from `impl_iter`. With `Dir`'s field being
private, we can rely on the pointer being only what we've assigned to
it.

* Make `poll`'s timeout argument a `libc::c_int`.

This clarifies that there are no subsequent conversions before calling the
underlying libc API.

* Use clock_gettime instead of clock_getres to get the time.

* Mark FileType::from_raw as safe.

It handles unknown values, so it can be marked safe.
This commit is contained in:
Dan Gohman
2019-12-16 13:34:22 -08:00
committed by GitHub
parent e21016f773
commit c2ba419409
11 changed files with 40 additions and 26 deletions
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8
crates/wasi-common/src/sys/mod.rs
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@@ -4,16 +4,16 @@ use cfg_if::cfg_if;
cfg_if! {
if #[cfg(unix)] {
mod unix;
pub(crate) use self::unix::*;
pub use self::unix::preopen_dir;
pub(crate) use unix::*;
pub use unix::preopen_dir;
pub(crate) fn errno_from_host(err: i32) -> wasi::__wasi_errno_t {
host_impl::errno_from_nix(yanix::Errno::from_i32(err)).as_wasi_errno()
}
} else if #[cfg(windows)] {
mod windows;
pub(crate) use self::windows::*;
pub use self::windows::preopen_dir;
pub(crate) use windows::*;
pub use windows::preopen_dir;
pub(crate) fn errno_from_host(err: i32) -> wasi::__wasi_errno_t {
host_impl::errno_from_win(winx::winerror::WinError::from_u32(err as u32))