This directory contains Bootstrap, an application which is responsible for setting up an environment which provides access to global system services.
This application runs quite early in the Fuchsia boot process. See the boot sequence for more information.
Bootstrap is designed to be fairly robust. If any of the services dies, they will be restarted automatically the next time an application attempts to connect to that service.
By default, bootstrap reads configuration files from /system/data/bootstrap/apps.config and /system/data/bootstrap/services.config.
The bootstrap services configuration is a JSON file consisting of service registrations. Each entry in the “services” map consists of a service name and the application URL which provides it.
{
"services": {
"service-name-1": "app_without_args",
"service-name-2": [
"app_with_args", "arg1", "arg2", "arg3"
]
}
}
The bootstrap loaders configuration is a JSON file consisting of application loader mappings. Each entry in the “loader” map consists of a URI scheme and the application loader that can load from it. The root loader, capable of handling “file” URIs, is mapped by default.
{
"loaders": {
"scheme-1": "loader_without_args",
"scheme-2": [
"loader_with_args", "arg1", "arg2", "arg3"
]
}
}
The bootstrap apps configuration is a JSON file consisting of apps to run at startup. Each entry in the “apps” list consists of either an app URL or a list of an app URL and its arguments.
{
"apps": [
"app_without_args",
[ "app_with_args", "arg1", "arg2", "arg3" ]
]
}