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#
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# $Id: Makefile,v 1.2 1993/08/24 17:16:54 pk Exp $
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#
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PROG = mount_procfs
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PROG = mount_procfs
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NOMAN = noman
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MAN8 = mount_procfs.0
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.include <bsd.prog.mk>
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.include <bsd.prog.mk>
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80
sbin/mount_procfs/mount_procfs.8
Normal file
80
sbin/mount_procfs/mount_procfs.8
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.Dd August 24, 1993
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.Dt MOUNT_PROCFS 8
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.Os NetBSD 0.8a
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.Sh NAME
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.Nm mount_procfs
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.Nd mount the proc file system
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.Sh SYNOPSIS
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.Nm mount_procfs
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.Op Fl F Ar fsoptions
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.Pa procfs
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.Pa mount_point
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.Sh DESCRIPTION
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The
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.Nm mount_procfs
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command attaches an instance of the proc filesystem
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to the global filesystem namespace.
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The conventional mount point is
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.Pa /proc .
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This command is normally executed by
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.Xr mount 8
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at boot time.
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.Pp
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The proc filesystem presents a directory entry for each process in the system.
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The name of an entry is process id in decimal notation.
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Opening an entry for reading and/or writing gives access to the process
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address space. Several ioctl(2) operations are available to gain additional
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control over the process.
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.Sh FILES
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.Sh SEE ALSO
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.Xr mount 2 ,
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.Xr unmount 2 ,
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.Xr fstab 5
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.Sh CAVEATS
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This filesystem may not be NFS-exported.
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The interface and implementation of the proc filesystem are still under
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development.
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.Sh HISTORY
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The
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.Nm mount_procfs
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utility first appeared in NetBSD 0.9.
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em clock (decimal ASCII).
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.It Pa loadavg
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the 1, 5 and 15 minute load average in kernel fixed-point format.
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The final integer is the fix-point scaling factor.
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All numbers are in decimal ASCII.
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.It Pa physmem
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the number of pages of physical memory in the machine (decimal ASCII).
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.It Pa root
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the system root directory.
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In a chroot'ed environment,
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.Nm
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can be used to create a new
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.Pa kernfs
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mount point.
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.Pa /kern/root
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will then refer to the system global root, not the current process root.
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.It Pa rootdev
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the root device.
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.It Pa rrootdev
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the raw root device.
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.It Pa time
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the second and microsecond value of the system clock.
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Both numbers are in decimal ASCII.
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.It Pa version
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the kernel version string.
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The head line for
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.Pa /etc/motd
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can be generated by running:
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.Dq Ic "sed 1q /kern/version"
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.El
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.Sh SEE ALSO
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.Xr mount 2 ,
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.Xr unmount 2 ,
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.Xr fstab 5
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.Sh CAVEATS
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This filesystem may not be NFS-exported.
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.Sh HISTORY
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The
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.Nm mount_kernfs
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utility first appeared in NetBSD 0.8a.
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@ -1,3 +1,35 @@
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/*
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* Copyright (c) 1993 Paul Kranenburg
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Paul Kranenburg.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: mount_procfs.c,v 1.2 1993/08/24 17:16:56 pk Exp $
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*/
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#include <stdio.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <sys/mount.h>
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