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.\" Written by Garrett Wollman
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.\" This file is in the public domain.
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.\"
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.\" $FreeBSD$
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.\"
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2007-02-05 22:45:58 +00:00
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.Dd February 5, 2007
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.Dt LINSYSFS 5
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.Os
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.Sh NAME
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.Nm linsysfs
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.Nd Linux system file system
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.Sh SYNOPSIS
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.Bd -literal
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linsys /compat/linux/sys linsysfs rw 0 0
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.Ed
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.Sh DESCRIPTION
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2006-09-30 16:01:33 +00:00
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The
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.Tn Linux
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system file system, or
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.Nm ,
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emulates a subset of the
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.Tn Linux
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sys file system and is required for
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the complete operation of some
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.Tn Linux
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binaries.
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.Pp
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The
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.Nm
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provides a two-level view of devices.
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At the highest level, PCI devices themselves are named, according to
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their bus, slot and function in the system hierarchy.
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PCI storage devices are listed in the
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.Pa scsi_host
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class with a device symlink
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to the PCI directories of the devices.
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.Pp
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Each device node is a directory containing some files and directories:
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.Bl -tag -width ".Pa status"
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.It Pa host
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A place holder for storage host information.
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.It Pa pci_id
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A directory for the
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.Pa pci_id
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that contains either the device information or another directory structure
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for a PCI bridge.
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.El
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.Pp
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Each host node of scsi_host is a directory containing some files and directories:
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.Bl -tag -width ".Pa proc_name"
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.It Pa proc_name
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The
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.Tn Linux
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registered driver name for these devices.
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.It Pa device
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A symlink to the PCI device directory.
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.El
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.Sh EXAMPLES
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The most common usage follows:
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.Pp
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.Dl "mount -t linsysfs linsys /compat/linux/sys"
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.Pp
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where
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.Pa /compat/linux/sys
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is a mount point.
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.Sh FILES
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.Bl -tag -width ".Pa /compat/linux/sys/devices/pci0000:00" -compact
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.It Pa /compat/linux/sys
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The normal mount point for
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.Nm .
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.It Pa /compat/linux/sys/class/scsi_host
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The storage host node.
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.It Pa /compat/linux/sys/devices/pci0000:00
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The PCI device hierarchy node.
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.El
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.Sh SEE ALSO
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.Xr nmount 2 ,
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.Xr unmount 2 ,
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.Xr linprocfs 5 ,
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.Xr pseudofs 9
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Fx 7.0 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was derived from
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.Nm linprocfs
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by
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.An Doug Ambrisko .
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This manual page was edited by
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.An Doug Ambrisko ,
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based on the
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.Xr linprocfs 5
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manual page by
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.An Garrett Wollman .
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