freebsd-dev/share/man/man5/linsysfs.5

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.\" Written by Garrett Wollman
.\" This file is in the public domain.
.\"
.\" $FreeBSD$
.\"
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.Dd February 5, 2007
.Dt LINSYSFS 5
.Os
.Sh NAME
.Nm linsysfs
.Nd Linux system file system
.Sh SYNOPSIS
.Bd -literal
linsys /compat/linux/sys linsysfs rw 0 0
.Ed
.Sh DESCRIPTION
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The
.Tn Linux
system file system, or
.Nm ,
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emulates a subset of the
.Tn Linux
sys file system and is required for
the complete operation of some
.Tn Linux
binaries.
.Pp
The
.Nm
provides a two-level view of devices.
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
.Pa scsi_host
class with a device symlink
to the PCI directories of the devices.
.Pp
Each device node is a directory containing some files and directories:
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.Bl -tag -width ".Pa status"
.It Pa host
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A place holder for storage host information.
.It Pa pci_id
A directory for the
.Pa pci_id
that contains either the device information or another directory structure
for a PCI bridge.
.El
.Pp
Each host node of scsi_host is a directory containing some files and directories:
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.Bl -tag -width ".Pa proc_name"
.It Pa proc_name
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The
.Tn Linux
registered driver name for these devices.
.It Pa device
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A symlink to the PCI device directory.
.El
.Sh EXAMPLES
The most common usage follows:
.Pp
.Dl "mount -t linsysfs linsys /compat/linux/sys"
.Pp
where
.Pa /compat/linux/sys
is a mount point.
.Sh FILES
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.Bl -tag -width ".Pa /compat/linux/sys/devices/pci0000:00" -compact
.It Pa /compat/linux/sys
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The normal mount point for
.Nm .
.It Pa /compat/linux/sys/class/scsi_host
The storage host node.
.It Pa /compat/linux/sys/devices/pci0000:00
The PCI device hierarchy node.
.El
.Sh SEE ALSO
.Xr nmount 2 ,
.Xr unmount 2 ,
.Xr linprocfs 5 ,
.Xr pseudofs 9
.Sh HISTORY
The
.Nm
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driver first appeared in
.Fx 6.2 .
.Sh AUTHORS
.An -nosplit
The
.Nm
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driver was derived from
.Nm linprocfs
by
.An Doug Ambrisko .
This manual page was edited by
.An Doug Ambrisko ,
based on the
.Xr linprocfs 5
manual page by
.An Garrett Wollman .