mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-21 18:50:50 +01:00
7a71b35023
Event: Advanced UNIX Programming Course (Fall'23) at NTHU. Pull Request: https://github.com/freebsd/freebsd-src/pull/1034
105 lines
3.4 KiB
Groff
105 lines
3.4 KiB
Groff
.\"
|
|
.\" Copyright (c) 2017 Netflix, Inc.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.Dd August 13, 2023
|
|
.Dt DEVMATCH 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm devmatch
|
|
.Nd print information about unattached devices
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl a | -all
|
|
.Op Fl d | -dump
|
|
.Op Oo Fl h | -hints Oc Ar file
|
|
.Op Oo Fl p | -nomatch Oc Ar event
|
|
.Op Fl q | -quiet
|
|
.Op Fl u | -unbound
|
|
.Op Fl v | -verbose
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility, without any arguments, prints all the kernel modules it has
|
|
found for all the unattached, enabled devices in the system.
|
|
.Bl -tag -width 20m
|
|
.It Fl a Fl -all
|
|
Include all devices, not just the ones that are unattached.
|
|
.It Fl d Fl -dump
|
|
Produce a human readable dump of the
|
|
.Pa linker.hints
|
|
file.
|
|
.It Fl h Fl -hints Ar file
|
|
Use the named
|
|
.Ar file
|
|
instead of
|
|
.Pa linker.hints
|
|
guessed from the current module load path.
|
|
.It Fl p Fl -nomatch Ar event
|
|
Parse and use a standard NOMATCH event from
|
|
.Xr devd 8
|
|
for matching instead of searching the device tree.
|
|
.It Fl q Fl -quiet
|
|
Suppress some error messages and simply return a non-zero exit code.
|
|
This is helpful to avoid an endless list of warnings during bootup if
|
|
no hints are available.
|
|
.It Fl u Fl -unbound
|
|
Attempt to produce a list of those drivers with PNP info whose driver
|
|
tables with that PNP info cannot be found.
|
|
.It Fl v Fl -verbose
|
|
Produce more verbose output.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr rc.conf 5 ,
|
|
.Xr devinfo 8 ,
|
|
.Xr MODULE_PNP_INFO 9
|
|
.Sh HISTORY
|
|
.Nm
|
|
first appeared in
|
|
.Fx 12.0 .
|
|
.Sh AUTHORS
|
|
.An Warner Losh Aq Mt imp@FreeBSD.org
|
|
.Sh BUGS
|
|
The kernel has hints in it, but we exclude it from the list of modules
|
|
to suggest for unmatched devices.
|
|
We exclude it when suggesting drivers, but include it when looking for
|
|
unbound devices or producing a full dump of
|
|
.Pa linker.hints .
|
|
This can be confusing.
|
|
.Pp
|
|
Some modules are hard links in
|
|
.Pa /boot/kernel
|
|
and will be reported twice.
|
|
.Pp
|
|
The PNP string's attributes are evaluated once per PNP entry on that
|
|
bus rather than once.
|
|
.Pp
|
|
The term PNP is overloaded in
|
|
.Fx .
|
|
It means, generically, the identifying data the bus provides about a
|
|
device.
|
|
While this includes old ISA PNP identifiers, it also includes the
|
|
logical equivalent in USB, PCI, and others.
|
|
.Pp
|
|
Many drivers currently lack proper PNP table decorations and need to
|
|
be updated.
|