src/sys/sysmgr/meta/sysmgr.cmx

{
    "program": {
        "binary": "bin/sysmgr"
    },
    "sandbox": {
        "features": [
            "config-data"
        ],
        "pkgfs": [
            "packages"
        ],
        "services": [
            "fuchsia.sys.Environment",
            "fuchsia.sys.Loader"
        ],
        "system": [
            "bin",
            "pkgs"
        ]
    }
}