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#!/sbin/openrc-run
description="Set sysfs variables from /etc/sysfs.conf and /etc/sysfs.d/*.conf"
conffile=/etc/sysfs.conf
confdir=/etc/sysfs.d
depend() {
need sysfs
}
setval() {
local value="$1" attrib="$2"
# Some fields need a terminating newline, others
# need the terminating newline to be absent :-(
printf '%s' "$value" > "$attrib" 2>/dev/null \
|| printf '%s\n' "$value" > "$attrib"
}
load_conffile() {
local file="$1"
while read line; do
local line="${line%%#*}"
local cmd= attrib= value=
set -- $line
if [ $# -eq 0 ]; then
continue
fi
case "$1$3" in
mode=) cmd=chmod
attrib="$2"
value="$4"
;;
owner=) cmd=chown
attrib="$2"
value="$4"
;;
*) if [ "$2" = "=" ]; then
cmd=setval
attrib="$1"
value="$3"
fi
;;
esac
if ! [ -e "/sys/$attrib" ]; then
eerror "$attrib: unknown attribute"
continue
fi
if [ -z "$attrib" ] || [ -z "$value" ]; then
eerror "syntax error in $file: '$line'"
continue
fi
$cmd "$value" "/sys/$attrib"
done < "$file"
}
start() {
[ -r "$conffile" -o -d "$confdir" ] || return 0
ebegin "Setting sysfs variables"
for file in $confdir/*.conf $conffile; do
[ -r "$file" ] || continue
load_conffile "$file" || return 1
done
eend 0
}
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