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use crate::FileTime;
use std::ffi::CString;
use std::fs::File;
use std::io;
use std::os::unix::prelude::*;
use std::path::Path;
pub fn set_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
set_times(p, Some(atime), Some(mtime), false)
}
pub fn set_file_mtime(p: &Path, mtime: FileTime) -> io::Result<()> {
set_times(p, None, Some(mtime), false)
}
pub fn set_file_atime(p: &Path, atime: FileTime) -> io::Result<()> {
set_times(p, Some(atime), None, false)
}
pub fn set_file_handle_times(
f: &File,
atime: Option<FileTime>,
mtime: Option<FileTime>,
) -> io::Result<()> {
let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
// On Android NDK before version 19, `futimens` is not available.
//
// For better compatibility, we reimplement `futimens` using `utimensat`,
// the same way as bionic libc uses it to implement `futimens`.
let rc = unsafe { libc::utimensat(f.as_raw_fd(), core::ptr::null(), times.as_ptr(), 0) };
if rc == 0 {
Ok(())
} else {
Err(io::Error::last_os_error())
}
}
pub fn set_symlink_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
set_times(p, Some(atime), Some(mtime), true)
}
fn set_times(
p: &Path,
atime: Option<FileTime>,
mtime: Option<FileTime>,
symlink: bool,
) -> io::Result<()> {
let flags = if symlink {
libc::AT_SYMLINK_NOFOLLOW
} else {
0
};
let p = CString::new(p.as_os_str().as_bytes())?;
let times = [super::to_timespec(&atime), super::to_timespec(&mtime)];
let rc = unsafe { libc::utimensat(libc::AT_FDCWD, p.as_ptr(), times.as_ptr(), flags) };
if rc == 0 {
Ok(())
} else {
Err(io::Error::last_os_error())
}
}
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