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100 lines
2.8 KiB
Awk
Executable File
100 lines
2.8 KiB
Awk
Executable File
#!/usr/bin/awk -f
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#
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# Copyright (c) 2000 "HOSOKAWA, Tatsumi" <hosokawa@FreeBSD.org>
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# Copyright (c) 2002 Ruslan Ermilov <ru@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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function usage()
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{
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print "usage: driver-remove.awk config_file BOOTMFS" > "/dev/stderr";
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exit 1;
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}
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function err(eval, fmt, what)
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{
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printf "driver-remove.awk: " fmt "\n", what > "/dev/stderr";
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exit eval;
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}
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function readconfig()
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{
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while ((r = (getline < config)) > 0) {
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sub("#.*$", "");
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if (sub(/^[[:alnum:]_]+[ \t]+[[:alnum:]_]+[ \t]+[0-9]+[ \t]+[[:alnum:]_]+[ \t]+\".*\"[ \t]*$/, "&")) {
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sub(/[ \t]+/, "#");
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sub(/[ \t]+/, "#");
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sub(/[ \t]+/, "#");
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sub(/[ \t]+/, "#");
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sub(/\"/, "");
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sub(/\"/, "");
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split($0, arg, "#");
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if (arg[4] == "options")
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options[arg[1]] = 1;
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else
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drivers[arg[1]] = 1;
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}
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}
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if (r == -1)
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err(1, "error reading %s", config);
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close(config);
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}
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BEGIN {
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if (ARGC != 3)
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usage();
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config = ARGV[1];
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bootmfs = ARGV[2];
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readconfig();
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lines = 0;
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while ((r = (getline < bootmfs)) > 0) {
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if (/^device[ \t]+[[:alnum:]_]+/) {
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dev = $0;
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sub(/^device[ \t]+/, "", dev);
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sub(/[ \t]+.*$/, "", dev);
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if (dev in drivers)
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continue;
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} else if (/^options[ \t]+[[:alnum:]_]+/) {
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opt = $0;
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sub(/^options[ \t]+/, "", opt);
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sub(/[ \t]+.*$/, "", opt);
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if (opt in options)
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continue;
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}
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line[lines++] = $0;
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}
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if (r == -1)
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err(1, "error reading %s", bootmfs);
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close(bootmfs);
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printf "" > bootmfs;
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for (i = 0; i < lines; i++)
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print line[i] >> bootmfs;
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close(bootmfs);
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}
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