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Define local seekdir and telldir prototypes on Android.

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These functions are not yet defined in the `libc` crate.
See https://github.com/rust-lang/libc/pull/1996.
This commit is contained in:
whitequark
2020-12-12 06:08:22 +00:00
committed by Dan Gohman
parent 919600d10b
commit 476ee59774
1 changed files with 16 additions and 6 deletions
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22
crates/wasi-common/yanix/src/dir.rs
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@@ -36,9 +36,15 @@ impl Dir {
}
/// Set the position of the directory stream, see `seekdir(3)`.
#[cfg(not(target_os = "android"))]
pub fn seek(&mut self, loc: SeekLoc) {
unsafe { libc::seekdir(self.0.as_ptr(), loc.0) }
// https://github.com/rust-lang/libc/pull/1996
#[cfg(not(target_os = "android"))]
use libc::seekdir;
#[cfg(target_os = "android")]
extern "C" {
fn seekdir(dirp: *mut libc::DIR, loc: libc::c_long);
}
unsafe { seekdir(self.0.as_ptr(), loc.0) }
}
/// Reset directory stream, see `rewinddir(3)`.
@@ -50,10 +56,16 @@ impl Dir {
///
/// If this location is given to `Dir::seek`, the entries up to the previously returned
/// will be omitted and the iteration will start from the currently pending directory entry.
#[cfg(not(target_os = "android"))]
#[allow(dead_code)]
pub fn tell(&self) -> SeekLoc {
let loc = unsafe { libc::telldir(self.0.as_ptr()) };
#[cfg(not(target_os = "android"))]
use libc::telldir;
#[cfg(target_os = "android")]
extern "C" {
fn telldir(dirp: *mut libc::DIR) -> libc::c_long;
}
// https://github.com/rust-lang/libc/pull/1996
let loc = unsafe { telldir(self.0.as_ptr()) };
SeekLoc(loc)
}
@@ -93,11 +105,9 @@ impl Entry {
}
}
#[cfg(not(target_os = "android"))]
#[derive(Clone, Copy, Debug)]
pub struct SeekLoc(pub(crate) libc::c_long);
#[cfg(not(target_os = "android"))]
impl SeekLoc {
pub fn to_raw(&self) -> i64 {
self.0.into()