opnsense-src/libexec/rc/rc.d/devmatch
Kyle Evans 17aec740b0 devmatch: do nothing if booted in safe mode
Safe mode may be enabled because of some problem discovered with a kmod,
thus wanting to avoid devmatch.  Honor it and let the user deal with
the fallout of not autoloading modules.  We've at least made it to
userland and the user demonstrably has a local console as they selected
safe mode in the first place, so this shouldn't be fatal if we don't,
e.g., load a necessary NIC driver.
2024-12-13 22:31:38 -06:00

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#!/bin/sh
# Copyright (c) 2018 M. Warner Losh <imp@FreeBSD.org>
#
# 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.
#
#
# PROVIDE: devmatch
# REQUIRE: kld
# BEFORE: netif
# KEYWORD: nojail
. /etc/rc.subr
name="devmatch"
desc="Use devmatch(8) to load kernel modules"
rcvar="${name}_enable"
start_cmd="${name}_start"
stop_cmd=':'
one_nomatch="$2"
devmatch_start()
{
local x m list boot_safe
boot_safe=$(kenv -q boot_safe || echo "NO")
checkyesno boot_safe && return
if [ -n "$one_nomatch" ]; then
list=$(devmatch -p "${one_nomatch}" | sort -u)
else
sysctl hw.bus.devctl_nomatch_enabled=1 > /dev/null
list=$(devmatch | sort -u)
fi
[ -n "$list" ] || return
# While kldload can accept multiple modules on the line at once, we loop
# here in case there's some weird error with one of them. We also
# optimize against the false positives or drivers that have symbolic
# links that confuse devmatch by running it -n. Finally, we filter out
# all items in the devmatch_blocklist.
#
# We strip all the .ko suffixes off so that one may specify modules
# with or without .ko. Prior version documented it was without, while
# the code required it, so accept both now. devmatch produces module
# names with .ko
devctl freeze
x=$(echo "#${devmatch_blocklist:-${devmatch_blacklist}}#$(kenv -q devmatch_blocklist)#" | \
sed -e "s/ /#/g;s/\.ko#/#/g")
for m in ${list}; do
m="${m%.ko}"
case "${x}" in
*"#${m}#"*) continue ;;
esac
kldstat -q -n ${m} || \
(echo "Autoloading module: ${m}"; kldload -n ${m})
done
devctl thaw
}
load_rc_config $name
# doesn't make sense to run in a svcj: privileged operations
devmatch_svcj="NO"
run_rc_command "$1"