NAME    [Toc]    [Back]

     mount_kernfs - mount the /kern file system

SYNOPSIS    [Toc]    [Back]

     mount_kernfs [-o options] /kern mount_point

DESCRIPTION    [Toc]    [Back]

     The mount_kernfs command attaches an instance of the  kernel
parameter
     namespace  to  the global filesystem namespace.  The conventional mount
     point is /kern.  This command is invoked  by  mount(8)  when
using the syntax


         mount [options] -t kernfs /kern mount_point

     This  command is normally executed by mount(8) at boot time.

     The filesystem includes several regular files which  can  be
read, some of
     which can also be written.  The contents of the files are in
a machineindependent
 format, either a string, or an integer in  decimal ASCII.
     Where  numbers are returned, a trailing newline character is
also added.

     The options are as follows:

     -o options
             Options are specified with a -o flag followed  by  a
comma separated
 string of options.  See the mount(8) man page for
possible options
 and their meanings.

     Statistics reported by df(1) on the  /kern  filesystem  will
indicate the
     amount  of  unwired/physical memory instead of `disk space',
and the number
     of vnodes used/allocated instead of `inodes'.  The  filesystem's block
     size is the system's page size.

FILES    [Toc]    [Back]

     boottime   Time at which the system was last booted (decimal
ASCII).
     byteorder  _BYTE_ORDER for this kernel.
     copyright  Kernel copyright message.
     hostname   The hostname, with a trailing newline.  The hostname can be
                changed by writing to this file.  A trailing newline will be
                stripped from the hostname being written.
     domainname
                The domainname, with a trailing newline.  Behaves
like a hostname.

     hz         Frequency of the system clock (decimal ASCII).
     ipsec       The currently configured IPsec Security Associations.
     loadavg    The 1, 5 and 15 minute  load  average  in  kernel
fixed-point format.
   The final integer is the fix-point scaling
factor.  All
                numbers are in decimal ASCII.
     machine    Architecture this kernel was compiled for.
     model      Model of the processor this  machine  is  running
on.
     msgbuf      Kernel  message buffer, also read by syslogd(8),
through the
                log device, and by dmesg(8).
     ncpu       Number of CPUs in this machine.
     ostype     OS type for this kernel ("OpenBSD").
     osrelease  OS release number.
     osrev      OS revision number (BSD from <sys/param.h>).
     pagesize   Machine pagesize (decimal ASCII).
     posix      _POSIX_VERSION for this kernel.
     physmem    Number of pages of physical memory in the machine
(decimal
                ASCII).
     rootdev    Root device.
     rrootdev   Raw root device.
     time       Second and microsecond value of the system clock.
Both numbers
 are in decimal ASCII.
     usermem    Number of pages of physical memory available  for
user processes.

     version      Kernel  version  string.   The  head  line  for
/etc/motd can be
                generated by running: ``sed 1q /kern/version''.

SEE ALSO    [Toc]    [Back]

     mount(2),   fstab(5),   dmesg(8),   mount(8),    syslogd(8),
umount(8)

HISTORY    [Toc]    [Back]

     The mount_kernfs utility first appeared in 4.4BSD.

CAVEATS    [Toc]    [Back]

     This filesystem may not be NFS-exported.

OpenBSD      3.6                          March      27,     1994