d...@sdf.org (Diogo) writes: >I'm looking for a mechanism to see what options were passed to the kernel when >booting. In Linux that is typically stored in /proc/cmdline. How to figure >that >out in NetBSD?
There is no command line, and the kernel doesn't take many options. Some information can be retrieved with sysctl (e.g. sysctl kern.boothowto). kern.boothowto is a number that combines bitmasks for the various options from boothowto(9), e.g. RB_ASKNAME 0x00000001 -a RB_SINGLE 0x00000002 -s RB_HALT 0x00000008 -b RB_KDB 0x00000040 -d RB_MINIROOT 0x00000200 -m RB_USERCONF 0x00001000 -c AB_QUIET 0x00010000 -q AB_VERBOSE 0x00020000 -v AB_SILENT 0x00040000 -z AB_DEBUG 0x00080000 -x RB_MD1 0x10000000 -1 RB_MD2 0x20000000 -2 RB_MD3 0x40000000 -3 RB_MD4 0x80000000 -4 kern.consdev is the device used as the kernel console. That is usually deduced from an option in the bootloader (e.g. console=pc on a platform using wscons would usually result in kern.consdev being /dev/ttyE0). kern.root_device is the device mounted as /, which is either deduced from the boot process or from an explicit option to the bootloader. machdep.booted_kernel is the name of the kernel that was loaded, either a default searched on the disk or passed explicitely to the bootloader.
