.TH BOOT 3.SH NAMEboot \- reboot under program control.SH SYNOPSIS.B bind -a #B /dev.PP.B /dev/boot.br.B /dev/kexec.br.B /dev/mem.SH DESCRIPTION.I Bootserves a directory containing three files that control a reboot of the system.The files can only be opened by the host owner(see.IR eve (10.2))..PP.B Bootis a write-only file that accepts 4 bytes representing a kernel address, high-order byte first.The system will transfer control to that address, which is assumed to be the start of low-level reboot code.There is no return from the write on success or failure..PP.B Kexecis a write-only file to which an uncompressed kernel image can be written, a chunk at a time.When the file is closed, the system will transfer control to the start of the image, which againis assumed to be low-level reboot code..PP.B Memcopies data to and from kernel memory, taking the current file offset as an address therein..PP.I Bootflushes caches as necessary to ensure that writes to kernel memory through anyof these files will be visible when subsequently executed as instructions..SH SOURCE.B /os/port/devboot.c.SH SEE ALSO.IR tftp (2),.IR cons (3).SH DIAGNOSTICSInvalid addresses are diagnosed, but otherwise there is no error return.