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Add devmatch rc.d integration

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Create simple script to load modules on demand based on the device
identifying information.

Sponsored by: Netflix
This commit is contained in:
Warner Losh 2018-02-12 04:45:17 +00:00
parent 4bc191c3dc
commit c0c6f4d2e0
2 changed files with 55 additions and 0 deletions
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1
etc/defaults/rc.conf
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@ -41,6 +41,7 @@ ddb_enable="NO" # Set to YES to load ddb scripts at boot.
ddb_config="/etc/ddb.conf" # ddb(8) config file.
devd_enable="YES" # Run devd, to trigger programs on device tree changes.
devd_flags="" # Additional flags for devd(8).
devmatch_enable="NO" # Demand load kernel modules based on device ids.
#kld_list="" # Kernel modules to load after local disks are mounted
kldxref_enable="NO" # Build linker.hints files with kldxref(8).
kldxref_clobber="NO" # Overwrite old linker.hints at boot.

54
etc/rc.d/devmatch Executable file
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@ -0,0 +1,54 @@
#!/bin/sh
# Copyright (c) 2018 Warner Losh
# All rights reserved.
#
# 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 AUTHOR 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 AUTHOR 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.
#
# $FreeBSD$
#
# PROVIDE: devmatch
# REQUIRE: kldxref
# KEYWORD: nojail
. /etc/rc.subr
name="devmatch"
desc="Use devmatch(8) to load kernel modules
start_cmd="${name}_start"
stop_cmd=':'
devmatch_start()
{
local x
x=$(devmatch | sort -u)
[ -n "$x" ] || return
echo "Autoloading modules"
kldload ${x}
}
load_rc_config $name
run_rc_command "$1"