Function find_missing_tmpfiles_current_root

crates/tmpfiles/src/lib.rs:425–454

()

/// Convert /var for the current root to use systemd tmpfiles.d.
#[allow(unsafe_code)]
pub fn find_missing_tmpfiles_current_root() -> Result<TmpfilesResult> {
    use uzers::cache::UsersSnapshot;

    let rootfs = Dir::open_ambient_dir("/", cap_std::ambient_authority())?;

    // See the docs for why this is unsafe
    let usergroups = unsafe { UsersSnapshot::new() };

    let existing_tmpfiles = read_tmpfiles(&rootfs)?.0;

    let mut prefix = PathBuf::from("/var");
    let mut tmpfiles = BTreeSet::new();
    let mut unsupported = Vec::new();
    convert_path_to_tmpfiles_d_recurse(
        &TmpfilesConvertConfig {
            users: &usergroups,
            groups: &usergroups,
            rootfs: &rootfs,
            existing: &existing_tmpfiles,
            readonly: true,
        },
        &mut tmpfiles,
        &mut unsupported,
        &mut prefix,
    )?;
    Ok(TmpfilesResult {
        tmpfiles,
        unsupported,
    })
}

/// Read all tmpfiles.d entries from a single directory
fn read_tmpfiles_from_dir(