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use crate::FileTime;
use std::ffi::CString;
use std::fs;
use std::io;
use std::os::unix::prelude::*;
use std::path::Path;
#[allow(dead_code)]
pub fn set_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
set_times(p, Some(atime), Some(mtime), false)
}
#[allow(dead_code)]
pub fn set_file_mtime(p: &Path, mtime: FileTime) -> io::Result<()> {
set_times(p, None, Some(mtime), false)
}
#[allow(dead_code)]
pub fn set_file_atime(p: &Path, atime: FileTime) -> io::Result<()> {
set_times(p, Some(atime), None, false)
}
#[cfg(not(target_env = "uclibc"))]
#[allow(dead_code)]
pub fn set_file_handle_times(
f: &fs::File,
atime: Option<FileTime>,
mtime: Option<FileTime>,
) -> io::Result<()> {
let (atime, mtime) = match get_times(atime, mtime, || f.metadata())? {
Some(pair) => pair,
None => return Ok(()),
};
let times = [to_timeval(&atime), to_timeval(&mtime)];
let rc = unsafe { libc::futimes(f.as_raw_fd(), times.as_ptr()) };
return if rc == 0 {
Ok(())
} else {
Err(io::Error::last_os_error())
};
}
#[cfg(target_env = "uclibc")]
#[allow(dead_code)]
pub fn set_file_handle_times(
f: &fs::File,
atime: Option<FileTime>,
mtime: Option<FileTime>,
) -> io::Result<()> {
let (atime, mtime) = match get_times(atime, mtime, || f.metadata())? {
Some(pair) => pair,
None => return Ok(()),
};
let times = [to_timespec(&atime), to_timespec(&mtime)];
let rc = unsafe { libc::futimens(f.as_raw_fd(), times.as_ptr()) };
return if rc == 0 {
Ok(())
} else {
Err(io::Error::last_os_error())
};
}
fn get_times(
atime: Option<FileTime>,
mtime: Option<FileTime>,
current: impl FnOnce() -> io::Result<fs::Metadata>,
) -> io::Result<Option<(FileTime, FileTime)>> {
let pair = match (atime, mtime) {
(Some(a), Some(b)) => (a, b),
(None, None) => return Ok(None),
(Some(a), None) => {
let meta = current()?;
(a, FileTime::from_last_modification_time(&meta))
}
(None, Some(b)) => {
let meta = current()?;
(FileTime::from_last_access_time(&meta), b)
}
};
Ok(Some(pair))
}
#[allow(dead_code)]
pub fn set_symlink_file_times(p: &Path, atime: FileTime, mtime: FileTime) -> io::Result<()> {
set_times(p, Some(atime), Some(mtime), true)
}
pub fn set_times(
p: &Path,
atime: Option<FileTime>,
mtime: Option<FileTime>,
symlink: bool,
) -> io::Result<()> {
let (atime, mtime) = match get_times(atime, mtime, || p.metadata())? {
Some(pair) => pair,
None => return Ok(()),
};
let p = CString::new(p.as_os_str().as_bytes())?;
let times = [to_timeval(&atime), to_timeval(&mtime)];
let rc = unsafe {
if symlink {
libc::lutimes(p.as_ptr(), times.as_ptr())
} else {
libc::utimes(p.as_ptr(), times.as_ptr())
}
};
return if rc == 0 {
Ok(())
} else {
Err(io::Error::last_os_error())
};
}
fn to_timeval(ft: &FileTime) -> libc::timeval {
libc::timeval {
tv_sec: ft.seconds() as libc::time_t,
tv_usec: (ft.nanoseconds() / 1000) as libc::suseconds_t,
}
}
#[cfg(target_env = "uclibc")]
fn to_timespec(ft: &FileTime) -> libc::timespec {
libc::timespec {
tv_sec: ft.seconds() as libc::time_t,
#[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
tv_nsec: (ft.nanoseconds()) as i64,
#[cfg(not(all(target_arch = "x86_64", target_pointer_width = "32")))]
tv_nsec: (ft.nanoseconds()) as libc::c_long,
}
}
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