src/storage/fshost/meta/fvm_fshost.shard.cml

// Copyright 2023 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Stubs out some Fxfs-specific capabilities.  This helps satisfy static routing checks for targets
// which depend on these Fxfs-specific capabilities (although any attempted use of the capabilities
// will result in a hang).  This is subpar because it means we don't get the benefits of the static
// routing checks, but component manifests aren't sufficiently expressive and integrated with the
// build system to avoid this (since we can't have "optional" intermediate routing hops very
// easily, see https://fxbug.dev/42058594).
//
// This is only necessary if we are not using storage-host, because we treat FVM as a container
// equivalent to Fxblob in that case and the necessary protocols are exposed.
// TODO(https://fxbug.dev/339491886): Remove when all products are switched over.
{
    capabilities: [
        {
            directory: "volumes",
            rights: [ "rw*" ],
            path: "/volumes",
        },
        {
            protocol: [ "fuchsia.fs.startup.Volumes" ],
        },
    ],
    expose: [
        {
            directory: "volumes",
            from: "self",
        },
        {
            protocol: "fuchsia.fs.startup.Volumes",
            from: "self",
        },
        {
            protocol: [
                "fuchsia.fshost.StarnixVolumeProvider",
                "fuchsia.fxfs.FileBackedVolumeProvider",
            ],
            from: "void",
            availability: "optional",
        },
    ],
}