054b79427e
Only very recently in #700 did we actually start running wasi tests again (they weren't running by accident). Just before that landed we also landed #688 which had some refactorings. Unfortunately #688 had a minor issue in it which wasn't caught because tests weren't run. This means that the bug in #688 slipped in and is now being caught by #700 now that both are landed on master. This commit fixes the small issue introduced and should get our CI green again!
62 lines
2.1 KiB
Rust
62 lines
2.1 KiB
Rust
//! This internal module consists of helper types and functions for dealing
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//! with setting the file times specific to Linux.
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use crate::{sys::unix::filetime::FileTime, Result};
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use std::fs::File;
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use std::io;
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use std::sync::atomic::{AtomicBool, Ordering::Relaxed};
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pub(crate) const UTIME_NOW: i64 = 1_073_741_823;
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pub(crate) const UTIME_OMIT: i64 = 1_073_741_822;
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/// Wrapper for `utimensat` syscall, however, with an added twist such that `utimensat` symbol
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/// is firstly resolved (i.e., we check whether it exists on the host), and only used if that is
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/// the case. Otherwise, the syscall resorts to a less accurate `utimesat` emulated syscall.
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/// The original implementation can be found here: [filetime::unix::linux::set_times]
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///
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/// [filetime::unix::linux::set_times]: https://github.com/alexcrichton/filetime/blob/master/src/unix/linux.rs#L64
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pub(crate) fn utimensat(
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dirfd: &File,
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path: &str,
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atime: FileTime,
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mtime: FileTime,
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symlink_nofollow: bool,
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) -> Result<()> {
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use crate::sys::unix::filetime::to_timespec;
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use std::ffi::CString;
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use std::os::unix::prelude::*;
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let flags = if symlink_nofollow {
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libc::AT_SYMLINK_NOFOLLOW
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} else {
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0
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};
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// Attempt to use the `utimensat` syscall, but if it's not supported by the
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// current kernel then fall back to an older syscall.
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static INVALID: AtomicBool = AtomicBool::new(false);
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if !INVALID.load(Relaxed) {
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let p = CString::new(path.as_bytes())?;
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let times = [to_timespec(&atime)?, to_timespec(&mtime)?];
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let rc = unsafe {
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libc::syscall(
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libc::SYS_utimensat,
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dirfd.as_raw_fd(),
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p.as_ptr(),
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times.as_ptr(),
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flags,
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)
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};
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if rc == 0 {
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return Ok(());
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}
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let err = io::Error::last_os_error();
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if err.raw_os_error() == Some(libc::ENOSYS) {
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INVALID.store(true, Relaxed);
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} else {
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return Err(err.into());
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}
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}
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super::utimesat::utimesat(dirfd, path, atime, mtime, symlink_nofollow)
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}
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