339 lines
9.1 KiB
Awk
339 lines
9.1 KiB
Awk
#!/usr/bin/awk -
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#
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# $NetBSD: MAKEDEV.awk,v 1.26 2019/06/13 20:54:04 christos Exp $
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#
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# Copyright (c) 2003 The NetBSD Foundation, Inc.
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# All rights reserved.
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#
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# This code is derived from software contributed to The NetBSD Foundation
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# by Jaromir Dolecek.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# Script to generate platform MAKEDEV script from MI template, MD
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# MAKEDEV.conf and MD/MI major lists
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#
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# Uses environment variables MACHINE/MACHINE_ARCH to select
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# appropriate files, and NETBSDSRCDIR to get root of source tree.
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BEGIN {
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# top of source tree, used to find major number list in kernel
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# sources
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machine = ENVIRON["MACHINE"]
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maarch = ENVIRON["MACHINE_ARCH"]
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srcdir = ENVIRON["NETBSDSRCDIR"]
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if (!machine || !maarch || !srcdir) {
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print "ERROR: 'MACHINE', 'MACHINE_ARCH' and 'NETBSDSRCDIR' must be set in environment" > "/dev/stderr"
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exit 1
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}
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top = srcdir "/sys/"
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if (system("test -d '" top "'") != 0) {
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print "ERROR: can't find top of kernel source tree ('" top "' not a directory)" > "/dev/stderr"
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exit 1
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}
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# file with major definitions
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majors[0] = "conf/majors"
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if ((index(maarch, "arm") != 0 || index(maarch, "aarch64")) && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0)
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majors[1] = "arch/arm/conf/majors.arm32";
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else if (machine == "sbmips")
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majors[1] = "arch/evbmips/conf/majors.evbmips";
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else if ((maarch == "powerpc" || maarch == "powerpc64") && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0)
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majors[1] = "arch/powerpc/conf/majors.powerpc";
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else
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majors[1] = "arch/" machine "/conf/majors." machine;
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nm = 2;
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# process all files with majors and fill the chr[] and blk[]
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# arrays, used in template processing
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for (m = 0; m < nm; m++) {
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file = top majors[m]
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if (system("test -f '" file "'") != 0) {
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print "ERROR: can't find majors file '" file "'" > "/dev/stderr"
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exit 1
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}
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while (getline < file) {
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if ($1 == "include") {
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majors[nm++] = substr($2, 2, length($2)-2);
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} else if ($1 == "device-major") {
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if ($3 == "char") {
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chr[$2] = $4
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if ($5 == "block")
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blk[$2] = $6
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} else if ($3 == "block")
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blk[$2] = $4
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}
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}
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close(file)
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}
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CONSOLE_CMAJOR = chr["cons"]
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if (CONSOLE_CMAJOR == "") {
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print "ERROR: no entry for 'cons' in majors file" > "/dev/stderr"
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exit 1
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}
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# read MD config file for MD device targets
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cfgfile = srcdir "/etc/etc." machine "/MAKEDEV.conf"
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if (system("test -f '" cfgfile "'") != 0) {
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print "ERROR: no platform MAKEDEV.conf - '" cfgfile "' doesn't exist" > "/dev/stderr"
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exit 1
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}
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# skip first two lines
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getline CONFRCSID < cfgfile # RCS Id
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getline < cfgfile # blank line
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MDDEV = 0 # MD device targets
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while (getline < cfgfile) {
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if (MDDEV)
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MDDEV = MDDEV "\n" $0
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else
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MDDEV = $0
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}
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close(cfgfile)
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# determine number of partitions used by platform
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# there are three variants in tree:
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# 1. MAXPARTITIONS = 8
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# 2. MAXPARTITIONS = 16 with no back compat mapping
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# 3. MAXPARTITIONS = 16 with back compat with old limit of 8
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# currently all archs, which moved from 8->16 use same
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# scheme for mapping disk minors, high minor offset
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# if this changes, the below needs to be adjusted and
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# additional makedisk_p16foo needs to be added
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incdir = machine
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diskpartitions = 0
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diskbackcompat = 0
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while (1) {
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inc = top "arch/" incdir "/include/disklabel.h"
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if (system("test -f '" inc "'") != 0) {
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print "ERROR: can't find kernel include file '" inc "'" > "/dev/stderr"
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exit 1
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}
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incdir = 0
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while (getline < inc) {
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if ($1 == "#define" && $2 == "MAXPARTITIONS")
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diskpartitions = $3
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else if ($1 == "#define" && $2 == "OLDMAXPARTITIONS")
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diskbackcompat = $3
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else if ($1 == "#define" && $2 == "RAW_PART")
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RAWDISK_OFF = $3
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else if ($1 == "#include" &&
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$2 ~ "<.*/disklabel.h>" &&
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$2 !~ ".*nbinclude.*")
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{
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# wrapper, switch to the right file
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incdir = substr($2, 2)
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sub("/.*", "", incdir)
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break;
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}
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}
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close(inc)
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if (diskpartitions)
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break;
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if (!incdir) {
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print "ERROR: can't determine MAXPARTITIONS from include file '" inc "'" > "/dev/stderr"
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exit 1
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}
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}
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MKDISK = "makedisk_p" diskpartitions # routine to create disk devs
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DISKMINOROFFSET = diskpartitions
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if (diskbackcompat) {
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MKDISK = MKDISK "high"
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DISKMINOROFFSET = diskbackcompat
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}
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RAWDISK_NAME = sprintf("%c", 97 + RAWDISK_OFF) # a+offset
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# read etc/master.passwd for user name->UID mapping
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idfile = srcdir "/etc/master.passwd"
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if (system("test -f '" idfile "'") != 0) {
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print "ERROR: can't find password file '" idfile "'" > "/dev/stderr"
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exit 1
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}
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oldFS=FS
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FS=":"
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while (getline < idfile) {
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uid[$1] = $3
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}
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close(idfile)
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FS=oldFS
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# read etc/group for group name->GID mapping
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idfile = srcdir "/etc/group"
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if (system("test -f '" idfile "'") != 0) {
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print "ERROR: can't find group file '" idfile "'" > "/dev/stderr"
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exit 1
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}
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oldFS=FS
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FS=":"
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while (getline < idfile) {
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gid[$1] = $3
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}
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close(idfile)
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FS=oldFS
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# initially no substitutions
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devsubst = 0
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deventry = ""
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}
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/%MI_DEVICES_BEGIN%/ {
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devsubst = 1;
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next
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}
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/%MI_DEVICES_END%/ {
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devsubst = 0;
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next
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}
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# output 'Generated from' lines
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/\$[N]etBSD/ {
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print "#"
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print "# Generated from:"
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# MAKEDEV.awk (this script) RCS Id
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ARCSID = "$NetBSD: MAKEDEV.awk,v 1.26 2019/06/13 20:54:04 christos Exp $"
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gsub(/\$/, "", ARCSID)
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print "# " ARCSID
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# MAKEDEV.tmpl RCS Id
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gsub(/\$/, "")
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print $0
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# MD MAKEDEV.conf RCS Id
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# strip leading hash and insert machine subdirectory name
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gsub(/\$/, "", CONFRCSID)
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sub(/^\# /, "", CONFRCSID)
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sub(/MAKEDEV.conf/, "etc." machine "/MAKEDEV.conf", CONFRCSID)
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print "# " CONFRCSID
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next # don't print the RCS Id line again
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}
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# filter the 'PLEASE RUN ...' paragraph
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/^\# PLEASE RUN/, /^\#\#\#\#\#\#/ {
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next
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}
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# filter the device list
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/^\# Tapes/,/^$/ {
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next
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}
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# filter the two unneeded makedisk_p* routines, leave only
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# the one used
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/^makedisk_p8\(\) \{/, /^\}/ {
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if (MKDISK != "makedisk_p8")
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next;
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}
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/^makedisk_p16\(\) \{/, /^\}/ {
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if (MKDISK != "makedisk_p16")
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next;
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}
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/^makedisk_p16high\(\) \{/, /^\}/ {
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if (MKDISK != "makedisk_p16high")
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next;
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}
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# special cases aside, handle normal line
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{
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sub(/^%MD_DEVICES%/, MDDEV)
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sub(/%MKDISK%/, MKDISK)
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sub(/%DISKMINOROFFSET%/, DISKMINOROFFSET)
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sub(/%RAWDISK_OFF%/, RAWDISK_OFF)
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sub(/%RAWDISK_NAME%/, RAWDISK_NAME)
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sub(/%CONSOLE_CMAJOR%/, CONSOLE_CMAJOR)
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parsed = ""
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line = $0
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while (match(line, /%[gu]id_[_a-z]*%/)) {
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typ = substr(line, RSTART + 1, 3);
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nam = substr(line, RSTART + 5, RLENGTH - 6);
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if (typ == "uid") {
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if (!(nam in uid)) {
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print "ERROR unmatched uid in `" $0 "'" > \
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"/dev/stderr"
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exit 1
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} else
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id = uid[nam];
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} else {
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if (!(nam in gid)) {
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print "ERROR unmatched gid in `" $0 "'" > \
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"/dev/stderr"
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exit 1
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} else
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id = gid[nam];
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}
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parsed = parsed substr(line, 1, RSTART - 1) id
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line = substr(line, RSTART + RLENGTH)
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}
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$0 = parsed line
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# if device substitutions are not active, do nothing more
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if (!devsubst) {
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print
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next
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}
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}
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# first line of device entry
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/^[a-z].*\)$/ {
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if (length(deventry) > 0) {
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# We have a previous entry to print. Replace all known
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# character and block devices. If no unknown character
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# or block device definition remains within the entry,
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# print it to output, otherwise scrap it.
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parsed = ""
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while (match(deventry, /%[a-z]*_(blk|chr)%/)) {
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nam = substr(deventry, RSTART + 1, RLENGTH - 6);
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typ = substr(deventry, RSTART + RLENGTH - 4, 3);
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if (typ == "blk") {
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if (!(nam in blk)) {
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deventry = $0
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next
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} else
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dev = blk[nam];
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} else {
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if (!(nam in chr)) {
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deventry = $0
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next
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} else
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dev = chr[nam];
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}
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parsed = parsed substr(deventry, 1, RSTART - 1) dev
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deventry = substr(deventry, RSTART + RLENGTH)
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}
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print parsed deventry
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}
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deventry = $0
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next
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}
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# template line within device substitution section - just keep appending
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# to the current entry
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{
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deventry = deventry "\n" $0
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}
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