Sha256: 48cf79df19fae4e96dd4acf7aa34a9b3e15ba3f8d7449159326efaa37e5d6e9e

Contents?: true

Size: 1.89 KB

Versions: 13

Compression:

Stored size: 1.89 KB

Contents

use crate::fs::ImplMetadataExt;
#[cfg(windows_by_handle)]
use crate::fs::Metadata;
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 = ImplMetadataExt::from(a, &a.metadata()?)?;
    let b_metadata = ImplMetadataExt::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 crate::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

13 entries across 13 versions & 1 rubygems

Version Path
wasmtime-29.0.0 ./ext/cargo-vendor/cap-primitives-3.4.2/src/windows/fs/is_same_file.rs
wasmtime-28.0.0 ./ext/cargo-vendor/cap-primitives-3.4.2/src/windows/fs/is_same_file.rs
wasmtime-27.0.0 ./ext/cargo-vendor/cap-primitives-3.4.1/src/windows/fs/is_same_file.rs
wasmtime-26.0.0 ./ext/cargo-vendor/cap-primitives-3.3.0/src/windows/fs/is_same_file.rs
wasmtime-25.0.2 ./ext/cargo-vendor/cap-primitives-3.2.0/src/windows/fs/is_same_file.rs
wasmtime-25.0.1 ./ext/cargo-vendor/cap-primitives-3.2.0/src/windows/fs/is_same_file.rs
wasmtime-25.0.0 ./ext/cargo-vendor/cap-primitives-3.2.0/src/windows/fs/is_same_file.rs
wasmtime-24.0.0 ./ext/cargo-vendor/cap-primitives-3.2.0/src/windows/fs/is_same_file.rs
wasmtime-23.0.2 ./ext/cargo-vendor/cap-primitives-3.1.0/src/windows/fs/is_same_file.rs
wasmtime-22.0.0 ./ext/cargo-vendor/cap-primitives-3.1.0/src/windows/fs/is_same_file.rs
wasmtime-21.0.1 ./ext/cargo-vendor/cap-primitives-3.1.0/src/windows/fs/is_same_file.rs
wasmtime-20.0.2 ./ext/cargo-vendor/cap-primitives-3.1.0/src/windows/fs/is_same_file.rs
wasmtime-20.0.0 ./ext/cargo-vendor/cap-primitives-3.0.0/src/windows/fs/is_same_file.rs