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Begin porting yanix to WASI.

Browse Source 
This isn't complete yet, but subsequent steps will depend on Rust libstd
and libc bindings changes that are in flight.
This commit is contained in:
Dan Gohman
2020-07-05 09:13:01 -07:00
committed by Jakub Konka
parent 25397d0c15
commit cf5289c553
9 changed files with 108 additions and 7 deletions
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21
crates/wasi-common/yanix/src/file.rs
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@@ -1,11 +1,14 @@
use crate::{from_result, from_success_code};
use bitflags::bitflags;
use cfg_if::cfg_if;
#[cfg(unix)]
use std::os::unix::prelude::*;
#[cfg(target_os = "wasi")]
use std::os::wasi::prelude::*;
use std::{
convert::TryInto,
ffi::{CString, OsStr, OsString},
io::Result,
os::unix::prelude::*,
};
pub use crate::sys::file::*;
@@ -62,6 +65,7 @@ bitflags! {
target_os = "macos",
target_os = "netbsd",
target_os = "openbsd",
target_os = "wasi",
target_os = "emscripten"))] {
libc::O_DSYNC
} else if #[cfg(target_os = "freebsd")] {
@@ -87,6 +91,7 @@ bitflags! {
#[cfg(any(target_os = "linux",
target_os = "netbsd",
target_os = "openbsd",
target_os = "wasi",
target_os = "emscripten"))]
const RSYNC = libc::O_RSYNC;
const SYNC = libc::O_SYNC;
@@ -189,11 +194,11 @@ pub unsafe fn mkdirat<P: AsRef<OsStr>>(dirfd: RawFd, path: P, mode: Mode) -> Res
from_success_code(libc::mkdirat(dirfd, path.as_ptr(), mode.bits()))
}
pub unsafe fn linkat<P: AsRef<OsStr>>(
pub unsafe fn linkat<P: AsRef<OsStr>, Q: AsRef<OsStr>>(
old_dirfd: RawFd,
old_path: P,
new_dirfd: RawFd,
new_path: P,
new_path: Q,
flags: AtFlags,
) -> Result<()> {
let old_path = CString::new(old_path.as_ref().as_bytes())?;
@@ -212,11 +217,11 @@ pub unsafe fn unlinkat<P: AsRef<OsStr>>(dirfd: RawFd, path: P, flags: AtFlags) -
from_success_code(libc::unlinkat(dirfd, path.as_ptr(), flags.bits()))
}
pub unsafe fn renameat<P: AsRef<OsStr>>(
pub unsafe fn renameat<P: AsRef<OsStr>, Q: AsRef<OsStr>>(
old_dirfd: RawFd,
old_path: P,
new_dirfd: RawFd,
new_path: P,
new_path: Q,
) -> Result<()> {
let old_path = CString::new(old_path.as_ref().as_bytes())?;
let new_path = CString::new(new_path.as_ref().as_bytes())?;
@@ -228,7 +233,11 @@ pub unsafe fn renameat<P: AsRef<OsStr>>(
))
}
pub unsafe fn symlinkat<P: AsRef<OsStr>>(old_path: P, new_dirfd: RawFd, new_path: P) -> Result<()> {
pub unsafe fn symlinkat<P: AsRef<OsStr>, Q: AsRef<OsStr>>(
old_path: P,
new_dirfd: RawFd,
new_path: Q,
) -> Result<()> {
let old_path = CString::new(old_path.as_ref().as_bytes())?;
let new_path = CString::new(new_path.as_ref().as_bytes())?;
from_success_code(libc::symlinkat(