src/sys/core/meta/core.cml

// Non-executable realm provisioning components and capabilities that are consistent across
// products.
{
    children: [
        {
            name: "appmgr",
            url: "fuchsia-pkg://fuchsia.com/appmgr#meta/appmgr.cm",
        },
        {
            name: "archivist",
            url: "fuchsia-boot:///#meta/archivist.cm",
        },

        // Children below this line may be present on some but not all product configurations (whereas
        // children above it are expected to be present on all configs that include core.cml)
        // TODO(fxbug.dev/48215): Decide how to make it easier to understand which children aren't present.
        {
            name: "test_manager",
            url: "fuchsia-pkg://fuchsia.com/test_manager#meta/test_manager.cm",
        },
        {
            name: "font_provider",
            url: "fuchsia-pkg://fuchsia.com/fonts#meta/fonts.cm",
        },
        {
            name: "remote-control",
            url: "fuchsia-pkg://fuchsia.com/remote-control#meta/remote-control.cm",
        },
        {
            name: "debug_serial",
            url: "fuchsia-pkg://fuchsia.com/debug-serial#meta/debug-serial.cm",
        },
    ],
    capabilities: [
        {
            storage: "data",
            from: "parent",
            subdir: "persistent",
            backing_dir: "/minfs",
        },
        { protocol: "fuchsia.appmgr.Startup" },
    ],
    offer: [
        {
            protocol: [ "/svc/fuchsia.boot.RootResource" ],
            from: "parent",
            to: [ "#debug_serial" ],
        },
        {
            protocol: "/svc/fuchsia.hardware.serial.NewDeviceProxy",
            from: "#debug_serial",
            to: [ "#appmgr" ],
        },
        {
            protocol: [ "fuchsia.pkg.FontResolver" ],
            from: "#appmgr",
            to: [ "#font_provider" ],
            dependency: "weak_for_migration",
        },

        // Passing from root realm to appmgr
        {
            protocol: [
                "/svc/fuchsia.boot.Arguments",
                "/svc/fuchsia.boot.FactoryItems",
                "/svc/fuchsia.boot.Items",
                "/svc/fuchsia.boot.ReadOnlyLog",
                "/svc/fuchsia.boot.RootJob",
                "/svc/fuchsia.boot.RootJobForInspect",
                "/svc/fuchsia.boot.RootResource",
                "/svc/fuchsia.device.manager.Administrator",
                "/svc/fuchsia.device.manager.DebugDumper",
                "/svc/fuchsia.device.NameProvider",
                "/svc/fuchsia.hardware.power.statecontrol.Admin",
                "/svc/fuchsia.hardware.power.statecontrol.RebootMethodsWatcherRegister",
                "/svc/fuchsia.hardware.pty.Device",
                "/svc/fuchsia.kernel.Counter",
                "/svc/fuchsia.kernel.DebugBroker",
                "/svc/fuchsia.kernel.Stats",
                "/svc/fuchsia.paver.Paver",
                "/svc/fuchsia.process.Launcher",
                "/svc/fuchsia.scheduler.ProfileProvider",
                "/svc/fuchsia.security.resource.Vmex",
                "/svc/fuchsia.sysinfo.SysInfo",
                "/svc/fuchsia.thermal.Controller",
                "/svc/fuchsia.time.Maintenance",
                "/svc/fuchsia.tracing.kernel.Controller",
                "/svc/fuchsia.tracing.kernel.Reader",
                "/svc/fuchsia.virtualconsole.SessionManager",
            ],
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            protocol: [ "/svc/fuchsia.boot.WriteOnlyLog" ],
            from: "parent",
            to: [
                "#appmgr",
                "#test_manager",
            ],
        },
        {
            protocol: [
                "/svc/fuchsia.boot.ReadOnlyLog",
                "/svc/fuchsia.sys2.EventSource",
            ],
            from: "parent",
            to: [ "#archivist" ],
        },
        {
            protocol: [
                "/svc/fuchsia.sys.internal.ComponentEventProvider",
                "/svc/fuchsia.sys.internal.LogConnector",
            ],
            from: "#appmgr",
            to: [ "#archivist" ],
            dependency: "weak_for_migration",
        },
        {
            protocol: [
                "/svc/fuchsia.diagnostics.ArchiveAccessor",
                "/svc/fuchsia.diagnostics.FeedbackArchiveAccessor",
                "/svc/fuchsia.diagnostics.LegacyMetricsArchiveAccessor",
                "/svc/fuchsia.logger.Log",
            ],
            from: "#archivist",
            to: [ "#appmgr" ],
        },
        {
            protocol: [ "/svc/fuchsia.logger.LogSink" ],
            from: "#archivist",
            to: [
                "#debug_serial",
                "#font_provider",
                "#remote-control",
                "#test_manager",
            ],
        },
        {
            protocol: [ "fuchsia.logger.LogSink" ],
            from: "#archivist",
            to: [ "#font_provider" ],
        },
        {
            protocol: [
                "/svc/fuchsia.sys2.BlockingEventSource",
                "/svc/fuchsia.sys2.EventSource",
            ],
            from: "parent",
            to: [ "#test_manager" ],
        },
        {
            protocol: [
                "/svc/fuchsia.net.stack.Stack",
                "/svc/fuchsia.overnet.Overnet",
                "/svc/fuchsia.overnet.ServicePublisher",
                "/svc/fuchsia.sys.Launcher",
                "fuchsia.test.manager.Harness",
            ],
            from: "#appmgr",
            to: [ "#remote-control" ],
            dependency: "weak_for_migration",
        },
        {
            protocol: [
                "/svc/fuchsia.device.manager.Administrator",
                "/svc/fuchsia.device.NameProvider",
            ],
            from: "parent",
            to: [ "#remote-control" ],
        },
        {
            storage: "data",
            from: "self",
            to: [ "#archivist" ],
        },
        {
            directory: "/boot",
            from: "parent",
            as: "/config/data",
            to: [ "#archivist" ],
            subdir: "config/archivist",
        },
        {
            directory: "config-data",
            from: "parent",
            to: [ "#font_provider" ],
            subdir: "fonts",
        },
        {
            directory: "config-data",
            from: "parent",
            to: [ "#test_manager" ],
        },
        {
            directory: "/config/data",
            from: "parent",
            to: [ "#test_manager" ],
        },
        {
            protocol: "/svc/fuchsia.developer.remotecontrol.RemoteControl",
            from: "#remote-control",
            to: [ "#appmgr" ],
        },
        {
            protocol: "/svc/fuchsia.fonts.Provider",
            from: "#font_provider",
            to: [ "#appmgr" ],
        },
        {
            directory: "/boot",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/dev",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/durable",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/factory",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/minfs",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/pkgfs",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/system",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/blob",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/volume",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/install",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            directory: "/tmp",
            from: "parent",
            to: [ "#appmgr" ],
        },
        {
            // Note: this is the v2 root hub. The hub in the `expose` section below
            // is the v1 root hub.
            directory: "/hub",
            from: "parent",
            to: [
                "#appmgr",
                "#remote-control",
            ],
        },

        // Offer lifecycle events to the archivist for diagnostics.
        {
            event: [
                "running",
                "started",
                "stopped",
            ],
            from: "parent",
            to: [ "#archivist" ],
        },
        {
            event: "capability_ready",
            from: "parent",
            to: [ "#archivist" ],
            filter: { path: "/diagnostics" },
        },
    ],
    expose: [
        // Non-zircon services for svchost
        {
            protocol: [
                "/svc/fuchsia.amber.Control",
                "/svc/fuchsia.cobalt.LoggerFactory",
                "/svc/fuchsia.exception.Handler",
                "/svc/fuchsia.feedback.CrashReporter",
                "/svc/fuchsia.net.NameLookup",
                "/svc/fuchsia.net.stack.Log",
                "/svc/fuchsia.net.stack.Stack",
                "/svc/fuchsia.netstack.Netstack",
                "/svc/fuchsia.pkg.PackageResolver",
                "/svc/fuchsia.pkg.RepositoryManager",
                "/svc/fuchsia.pkg.rewrite.Engine",
                "/svc/fuchsia.posix.socket.Provider",
                "/svc/fuchsia.process.Resolver",
                "/svc/fuchsia.sys.Environment",
                "/svc/fuchsia.sys.Launcher",
                "/svc/fuchsia.sys.Loader",
                "/svc/fuchsia.tracing.controller.Controller",
                "/svc/fuchsia.tracing.provider.Registry",
                "/svc/fuchsia.wlan.service.Wlan",
            ],
            from: "#appmgr",
        },
        {
            protocol: [ "fuchsia.appmgr.Startup" ],
            from: "#appmgr",
        },

        // Expose LogSink for use by components in other realms. The archivist
        // exposes LogSink, components use it and when component_manager routes
        // the protocol it'll defer the binding to the archivist through
        // capabiltiy requested for attribution.
        {
            protocol: [
                "/svc/fuchsia.diagnostics.ArchiveAccessor",
                "/svc/fuchsia.diagnostics.FeedbackArchiveAccessor",
                "/svc/fuchsia.logger.Log",
                "/svc/fuchsia.logger.LogSink",
            ],
            from: "#archivist",
        },

        // device_manager needs the hub for the serial console
        {
            directory: "/hub",
            from: "#appmgr",
        },
    ],
}