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# Bootsvc
`bootsvc` is (typically) the first program loaded by usermode (contrast with
[userboot](, which is loaded by the kernel). `bootsvc` provides
several system services:
- A filesystem service with the contents of the bootfs (/boot)
- A loader service that loads from that bootfs
After preparing these services, it launches one program from the bootfs. The
program may be selected with a [kernel command line argument](/docs/reference/kernel/
`` (this default to `bin/component_manager` currently). The
launched program is provided with the bootfs mounted at `/boot` and the loader
service. `bootsvc.on_next_process_exit` controls whether bootsvc reboots or
shuts down the device when the process it starts exits. The kernel command
line arguments are provided to it via `envp`. See the documentation in
`system/core/bootsvc/main.cpp:LaunchNextProcess()` for more details.