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#!/usr/bin/awk -f
#
# Copyright (c) 2000 "HOSOKAWA, Tatsumi" <hosokawa@FreeBSD.org>
# Copyright (c) 2002 Ruslan Ermilov <ru@FreeBSD.org>
# 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.
#
# $FreeBSD$
#
function usage()
{
print "usage: driver-remove.awk config_file BOOTMFS" > "/dev/stderr";
exit 1;
}
function err(eval, fmt, what)
{
printf "driver-remove.awk: " fmt "\n", what > "/dev/stderr";
exit eval;
}
function readconfig()
{
while ((r = (getline < config)) > 0) {
sub("#.*$", "");
if (sub(/^[[:alnum:]_]+[ \t]+[[:alnum:]_]+[ \t]+[0-9]+[ \t]+[[:alnum:]_]+[ \t]+\".*\"[ \t]*$/, "&")) {
sub(/[ \t]+/, "#");
sub(/[ \t]+/, "#");
sub(/[ \t]+/, "#");
sub(/[ \t]+/, "#");
sub(/\"/, "");
sub(/\"/, "");
split($0, arg, "#");
if (arg[4] == "options")
options[arg[1]] = 1;
else
drivers[arg[1]] = 1;
}
}
if (r == -1)
err(1, "error reading %s", config);
close(config);
}
BEGIN {
if (ARGC != 3)
usage();
config = ARGV[1];
bootmfs = ARGV[2];
readconfig();
lines = 0;
while ((r = (getline < bootmfs)) > 0) {
if (/^device[ \t]+[[:alnum:]_]+/) {
dev = $0;
sub(/^device[ \t]+/, "", dev);
sub(/[ \t]+.*$/, "", dev);
if (dev in drivers)
continue;
} else if (/^options[ \t]+[[:alnum:]_]+/) {
opt = $0;
sub(/^options[ \t]+/, "", opt);
sub(/[ \t]+.*$/, "", opt);
if (opt in options)
continue;
}
line[lines++] = $0;
}
if (r == -1)
err(1, "error reading %s", bootmfs);
close(bootmfs);
printf "" > bootmfs;
for (i = 0; i < lines; i++)
print line[i] >> bootmfs;
close(bootmfs);
}
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