Sha256: 9fa54bba284bab6ace2e0853b612b962320ab97aa86f0bf0d4c48098bed8c6f3
Contents?: true
Size: 1.88 KB
Versions: 25
Compression:
Stored size: 1.88 KB
Contents
#[cfg(windows_by_handle)]
use crate::fs::Metadata;
use crate::fs::MetadataExt;
use std::{fs, io};
/// Determine if `a` and `b` refer to the same inode on the same device.
pub(crate) fn is_same_file(a: &fs::File, b: &fs::File) -> io::Result<bool> {
let a_metadata = MetadataExt::from(a, &a.metadata()?)?;
let b_metadata = MetadataExt::from(b, &b.metadata()?)?;
Ok(a_metadata.is_same_file(&b_metadata))
}
/// Determine if `a` and `b` are metadata for the same inode on the same
/// device.
#[cfg(windows_by_handle)]
#[allow(dead_code)]
pub(crate) fn is_same_file_metadata(a: &Metadata, b: &Metadata) -> io::Result<bool> {
use std::os::windows::fs::MetadataExt;
Ok(a.volume_serial_number() == b.volume_serial_number() && a.file_index() == b.file_index())
}
/// Determine if `a` and `b` definitely refer to different inodes.
///
/// This is similar to `is_same_file`, but is conservative, and doesn't depend
/// on nightly-only features.
#[cfg(racy_asserts)]
pub(crate) fn is_different_file(a: &fs::File, b: &fs::File) -> io::Result<bool> {
#[cfg(windows_by_handle)]
{
is_same_file(a, b).map(|same| !same)
}
#[cfg(not(windows_by_handle))]
{
let a_metadata = Metadata::from_std(a.metadata()?);
let b_metadata = Metadata::from_std(b.metadata()?);
is_different_file_metadata(&a_metadata, &b_metadata)
}
}
/// Determine if `a` and `b` are metadata for definitely different inodes.
///
/// This is similar to `is_same_file_metadata`, but is conservative, and
/// doesn't depend on nightly-only features.
#[cfg(racy_asserts)]
pub(crate) fn is_different_file_metadata(a: &Metadata, b: &Metadata) -> io::Result<bool> {
#[cfg(windows_by_handle)]
{
is_same_file_metadata(a, b).map(|same| !same)
}
#[cfg(not(windows_by_handle))]
{
// Conservatively just compare creation times.
Ok(a.created()? != b.created()?)
}
}
Version data entries
25 entries across 25 versions & 1 rubygems