netbsd man page for setroot

CPU_ROOTCONF(9) 					   BSD Kernel Developer's Manual					   CPU_ROOTCONF(9)

NAME
     cpu_rootconf, rootconf, setroot -- root file system setup

SYNOPSIS
     #include <sys/types.h>
     #include <sys/systm.h>

     void
     cpu_rootconf(void);

     void
     rootconf(void);

     void
     setroot(device_t bootdv, int bootpartition);

DESCRIPTION
     The cpu_rootconf() is a machine-dependent interface invoked during system bootstrap to determine the root file system device and initialize
     machine-dependent file system state.  cpu_rootconf() provides the global variables booted_device, booted_partition, booted_startblk and
     booted_nblks and invokes the machine-independent function rootconf which rootconf then calls the function setroot to record the boot/root
     device and the boot partition information for use in machine-independent code.

     For disk boot, if booted_nblks is not 0, then booted_startblk and booted_nblks are supposed to specify a disk wedge that is used as the root
     device.  Otherwise the booted_partition is used.

SEE ALSO
     boot(8), boothowto(9), dk(4)

BSD
								  April 13, 2010							       BSD