As stated in a message before, disabling, via userconf(4), all the drmkms drivers can not rely on a pattern matching since, for historical reasons (several versions of DRM), the namespace of the drivers is not "ruled".
So I want to add a "group" member to the cfdata structure, with modifications to config(1) to set it, in order to allow to disable devices by a group name. Additionnaly, because I had already implemented it, there is a pattern matching feature too. You will find attached the man page in order to be able to comment about the proposed new syntax---supplementary syntax: it does not replace the "legacy" one. -- Thierry Laronde <tlaronde +AT+ kergis +dot+ com> http://www.kergis.com/ http://kertex.kergis.com/ Key fingerprint = 0FF7 E906 FBAF FE95 FD89 250D 52B1 AE95 6006 F40C
.\" $NetBSD: userconf.4,v 1.14 2019/05/27 21:19:55 wiz Exp $ .\" .\" Copyright (c) 2001 The NetBSD Foundation, Inc. .\" All rights reserved. .\" .\" This code is derived from software contributed to The NetBSD Foundation .\" by Gregory McGarry. .\" .\" 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS .\" ``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 FOUNDATION OR CONTRIBUTORS .\" 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 November 1, 2023 .Dt USERCONF 4 .Os .Sh NAME .Nm userconf .Nd in-kernel device configuration manager .Sh SYNOPSIS .Cd options USERCONF .Sh DESCRIPTION .Nm is the in-kernel device configuration manager. It is used to alter the kernel autoconfiguration framework at runtime. .Nm is activated from the boot loader by passing the .Fl c option to the kernel. .Sh COMMAND SYNTAX There is a subset of meta-commands described immediately below and action commands, described after in separated sections, in two syntaxes: legacy and new, the new syntax extending the possibilities offered by the legacy one. .Pp .Nm has a .Xr more 1 Ns -like functionality; if a number of lines in a command's output exceeds the number defined in the lines variable, then .Nm displays .Dq "-- more --" and waits for a response, which may be one of: .Bl -tag -offset indent -width "<return>" .It <return> one more line. .It <space> one more page. .It Ic q abort the current command, and return to the command input mode. .El .Pp The common meta-commands are the following: .Bl -tag -width 5n .It Ic lines Ar count Specify the number of lines before more. A negative number suppresses the paging. .It Ic base Ar 8 | 10 | 16 Base for displaying large numbers. .It Ic exit A synonym for .Ic quit . .It Ic help Display online help, including ranges of device number, list of device names and groups. .It Ic quit Leave userconf. .It Ic \&? A synonym for .Ic help . .El .Sh LEGACY SYNTAX AND COMMANDS .Nm supports the legacy syntax: .Bd -ragged -offset indent .Ic command Op Ar option .Ed .Pp and offers the following commands: .Bl -tag -width 5n .It Ic change Ar devno | dev Change devices. .It Ic disable Ar devno | dev Disable devices. .It Ic enable Ar devno | dev Enable devices. .It Ic find Ar devno | dev Find devices. .It Ic list List current configuration. .El .Sh NEW SYNTAX AND COMMANDS .Nm supports the new syntax: .Bd -ragged -offset indent .Ic command Ar property Li \&= Ar expression .Ed .Pp The .Li \&= has to be interpreted as meaning: defines the collection of devices on which to apply the command with devices whose stated property matches the expression. .Pp The commands are the following (same as with legacy syntax): .Bl -tag -width 7n .It Ic change Change devices. .It Ic disable Disable devices. .It Ic enable Enable devices. .It Ic find Find devices. .It Ic list List devices .El .Pp A .Ar property is one of the literals .Bl -tag -width 5n .It Li devno the index number of the device in the cfdata vector. The expression shall be a positive or nul integer value, less than the cardinal of devices in the cfdata vector. .It Li name the driver name. The expression shall be a string one (see below). .It Li group the group the device belongs to. The expression shall be a string one (see below). .El .Ss STRING EXPRESSION A string expression is whether a literal string enclosed between double quotes .Li \&" or a pattern enclosed between slashes .Li \&/ . .Pp With a pattern, the string is searched as a fixed substring (there is neither a wildcard special character, nor ranges or counts etc.), that can be anchored at the beginning of the string to match against with a caret .Li \&^ and/or at the end of the string to match against with a dollar .Li \&$ . .Pp Hence the literal string: .Li \&"foo\&" will have the same effect as the anchored pattern: .Li /^foo$/ . .Pp A string expression can be suffixed with a .Li \&* meaning to select devices matching the string only if they are STARred ones. Examples: .Li \&"foobar\&"* or .Li /^foo/* (the pattern in this example will eventually match more than the literal string). .Sh EXAMPLES Disabling all the devices belonging to the .Li \&"drmkms\&" group: .Pp .Dl disable group = \&"drmkms\&" .Pp Listing all the devices whose name matches .Li usb at the beginning of the name: .Pp .Dl list name = /^usb/ .Sh FILES .Bl -item .It .Pa sys/sys/devices.h .It .Pa sys/sys/userconf.h .It .Pa sys/kern/subr_userconf.c .El .Sh HISTORY The .Nm framework first appeared in .Ox 2.0 , and was then integrated into .Nx 1.6 . .Sh AUTHORS The .Nm framework was written by .An Mats O Jansson .Aq Mt m...@stacken.kth.se . .Pp The new syntax and the groups handling were added by .An Thierry Laronde .Aq tlaro...@kergis.com .