MAKEDEV.awk revision 1.7
1 #!/usr/bin/awk - 2 # 3 # $NetBSD: MAKEDEV.awk,v 1.7 2003/10/24 19:57:36 jdolecek Exp $ 4 # 5 # Copyright (c) 2003 The NetBSD Foundation, Inc. 6 # All rights reserved. 7 # 8 # This code is derived from software contributed to The NetBSD Foundation 9 # by Jaromir Dolecek. 10 # 11 # Redistribution and use in source and binary forms, with or without 12 # modification, are permitted provided that the following conditions 13 # are met: 14 # 1. Redistributions of source code must retain the above copyright 15 # notice, this list of conditions and the following disclaimer. 16 # 2. Redistributions in binary form must reproduce the above copyright 17 # notice, this list of conditions and the following disclaimer in the 18 # documentation and/or other materials provided with the distribution. 19 # 3. All advertising materials mentioning features or use of this software 20 # must display the following acknowledgement: 21 # This product includes software developed by the NetBSD 22 # Foundation, Inc. and its contributors. 23 # 4. Neither the name of The NetBSD Foundation nor the names of its 24 # contributors may be used to endorse or promote products derived 25 # from this software without specific prior written permission. 26 # 27 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 # POSSIBILITY OF SUCH DAMAGE. 38 # 39 40 # Script to generate platform MAKEDEV script from MI template, MD 41 # MAKEDEV.conf and MD/MI major lists 42 # 43 # Uses environment variables MACHINE/MACHINE_ARCH to select 44 # appropriate files, and NETBSDSRCDIR to get root of source tree. 45 46 BEGIN { 47 # top of source tree, used to find major number list in kernel 48 # sources 49 top = ETCDIR "/../sys/" 50 if (system("test -d '" top "'") != 0) { 51 print "ERROR: can't find top of kernel source tree ('" top "' not a directory)" > "/dev/stderr" 52 exit 1 53 } 54 55 machine = ENVIRON["MACHINE"] 56 maarch = ENVIRON["MACHINE_ARCH"] 57 if (!machine || !maarch) { 58 print "ERROR: 'MACHINE' and 'MACHINE_ARCH' must be set in environment" > "/dev/stderr" 59 exit 1 60 } 61 62 # file with major definitions 63 majors[0] = "conf/majors" 64 if (maarch == "arm" && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0) 65 majors[1] = "arch/arm/conf/majors.arm32"; 66 else if (machine == "evbsh5") { 67 majors[1] = "arch/evbsh5/conf/majors.evbsh5"; 68 majors[2] = "arch/sh5/conf/majors.sh5"; 69 } else if (machine == "sbmips") 70 majors[1] = "arch/evbmips/conf/majors.evbmips"; 71 else 72 majors[1] = "arch/" machine "/conf/majors." machine; 73 74 # process all files with majors and fill the chr[] and blk[] 75 # arrays, used in template processing 76 for (m in majors) { 77 file = top majors[m] 78 if (system("test -f '" file "'") != 0) { 79 print "ERROR: can't find majors file '" file "'" > "/dev/stderr" 80 exit 1 81 } 82 83 while (getline < file) { 84 if ($1 == "device-major") { 85 if ($3 == "char") { 86 chr[$2] = $4 87 if ($5 == "block") 88 blk[$2] = $6 89 } else if ($3 == "block") 90 blk[$2] = $4 91 } 92 } 93 close(file) 94 } 95 96 # read MD config file for MD device targets 97 cfgfile = ETCDIR "/etc." machine "/MAKEDEV.conf" 98 if (system("test -f '" cfgfile "'") != 0) { 99 print "ERROR: no platform MAKEDEV.conf - '" cfgfile "' doesn't exist" > "/dev/stderr" 100 exit 1 101 } 102 # skip first two lines - RCS Id and blank line 103 getline < cfgfile 104 getline < cfgfile 105 MDDEV = 0 # MD device targets 106 while (getline < cfgfile) { 107 if (MDDEV) 108 MDDEV = MDDEV "\n" $0 109 else 110 MDDEV = $0 111 } 112 close(cfgfile) 113 114 # determine number of partitions used by platform 115 # there are three variants in tree: 116 # 1. MAXPARTITIONS = 8 117 # 2. MAXPARTITIONS = 16 with no back compat mapping 118 # 3. MAXPARTITIONS = 16 with back compat with old limit of 8 119 # currently all archs, which moved from 8->16 use same 120 # scheme for mapping disk minors, high minor offset 121 # if this changes, the below needs to be adjusted and 122 # additional makedisk_p16foo needs to be added 123 incdir = machine 124 diskpartitions = 0 125 diskbackcompat = 0 126 while (1) { 127 inc = top "arch/" incdir "/include/disklabel.h" 128 if (system("test -f '" inc "'") != 0) { 129 print "ERROR: can't find kernel include file '" inc "'" > "/dev/stderr" 130 exit 1 131 } 132 incdir = 0 133 while (getline < inc) { 134 if ($1 == "#define" && $2 == "MAXPARTITIONS") 135 diskpartitions = $3 136 else if ($1 == "#define" && $2 == "OLDMAXPARTITIONS") 137 diskbackcompat = $3 138 else if ($1 == "#define" && $2 == "RAW_PART") 139 RAWDISK_OFF = $3 140 else if ($1 == "#include" && $2 ~ "<.*/disklabel.h>") { 141 # wrapper, switch to the right file 142 incdir = substr($2, 2) 143 sub("/.*", "", incdir) 144 break; 145 } 146 } 147 148 if (diskpartitions) 149 break; 150 151 if (!incdir) { 152 print "ERROR: can't determine MAXPARTITIONS from include file '" inc "'" > "/dev/stderr" 153 exit 1 154 } 155 } 156 MKDISK = "makedisk_p" diskpartitions # routine to create disk devs 157 DISKMINOROFFSET = diskpartitions 158 if (diskbackcompat) { 159 MKDISK = MKDISK "high" 160 DISKMINOROFFSET = diskbackcompat 161 } 162 RAWDISK_NAME = sprintf("%c", 97 + RAWDISK_OFF) # a+offset 163 164 # initially no substitutions 165 devsubst = 0 166 deventry = "" 167 } 168 169 /%MI_DEVICES_BEGIN%/ { 170 devsubst = 1; 171 next 172 } 173 174 /%MI_DEVICES_END%/ { 175 devsubst = 0; 176 next 177 } 178 179 # filter the two unneeded makedisk_p* routines, leave only 180 # the one used 181 /^makedisk_p8\(\) {/, /^}/ { 182 if (MKDISK != "makedisk_p8") 183 next; 184 } 185 /^makedisk_p16\(\) {/, /^}/ { 186 if (MKDISK != "makedisk_p16") 187 next; 188 } 189 /^makedisk_p16high\(\) {/, /^}/ { 190 if (MKDISK != "makedisk_p16high") 191 next; 192 } 193 194 # special cases aside, handle normal line 195 { 196 sub("^%MD_DEVICES%", MDDEV) 197 sub("%MKDISK%", MKDISK) 198 sub("%DISKMINOROFFSET%", DISKMINOROFFSET) 199 sub("%RAWDISK_OFF%", RAWDISK_OFF) 200 sub("%RAWDISK_NAME%", RAWDISK_NAME) 201 202 # if device substitutions are not active, do nothing more 203 if (!devsubst) { 204 print 205 next 206 } 207 } 208 209 # first line of device entry 210 /^[a-z].*\)$/ { 211 if (length(deventry) > 0) { 212 # We have a previous entry to print. Replace all known 213 # character and block devices. If no unknown character 214 # or block device definition remains within the entry, 215 # print it to output, otherwise scrap it. 216 for (c in chr) 217 gsub("%" c "_chr%", chr[c], deventry) 218 for (b in blk) 219 gsub("%" b "_blk%", blk[b], deventry) 220 221 if (deventry !~ "%[a-z]*_chr%" && deventry !~ "%[a-z]*_blk%") 222 print deventry 223 } 224 deventry = $0 225 next 226 } 227 228 # template line within device substitution section - just keep appending 229 # to the current entry 230 { 231 deventry = deventry "\n" $0 232 } 233
Indexes created Thu Oct 30 16:09:53 GMT 2025