Function deployment_fd

crates/lib/src/utils.rs:47–54

Return a cap-std `Dir` type for a deployment. TODO: in the future this should perhaps actually mount via composefs

(
    sysroot: &ostree::Sysroot,
    deployment: &ostree::Deployment,
)

// Return a cap-std `Dir` type for a deployment.
// TODO: in the future this should perhaps actually mount via composefs
pub(crate) fn deployment_fd(
    sysroot: &ostree::Sysroot,
    deployment: &ostree::Deployment,
) -> Result<Dir> {
    let sysroot_dir = &Dir::reopen_dir(&sysroot_fd(sysroot))?;
    let dirpath = sysroot.deployment_dirpath(deployment);
    sysroot_dir.open_dir(&dirpath).map_err(Into::into)
}

/// Given an mount option string list like foo,bar=baz,something=else,ro parse it and find
/// the first entry like $optname=