1#!/usr/bin/awk - 2# 3# $NetBSD: MAKEDEV.awk,v 1.28 2019/11/03 12:03:35 martin 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# 20# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30# POSSIBILITY OF SUCH DAMAGE. 31# 32 33# Script to generate platform MAKEDEV script from MI template, MD 34# MAKEDEV.conf and MD/MI major lists 35# 36# Uses environment variables MACHINE/MACHINE_ARCH to select 37# appropriate files, and NETBSDSRCDIR to get root of source tree. 38 39BEGIN { 40 # top of source tree, used to find major number list in kernel 41 # sources 42 machine = ENVIRON["MACHINE"] 43 maarch = ENVIRON["MACHINE_ARCH"] 44 srcdir = ENVIRON["NETBSDSRCDIR"] 45 if (!machine || !maarch || !srcdir) { 46 print "ERROR: 'MACHINE', 'MACHINE_ARCH' and 'NETBSDSRCDIR' must be set in environment" > "/dev/stderr" 47 exit 1 48 } 49 top = srcdir "/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 56 # file with major definitions 57 majors[0] = "conf/majors" 58 if ((index(maarch, "arm") != 0 || index(maarch, "aarch64")) && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0) 59 majors[1] = "arch/arm/conf/majors.arm32"; 60 else if (machine == "sbmips") 61 majors[1] = "arch/evbmips/conf/majors.evbmips"; 62 else if ((maarch == "powerpc" || maarch == "powerpc64") && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0) 63 majors[1] = "arch/powerpc/conf/majors.powerpc"; 64 else 65 majors[1] = "arch/" machine "/conf/majors." machine; 66 nm = 2; 67 68 # process all files with majors and fill the chr[] and blk[] 69 # arrays, used in template processing 70 for (m = 0; m < nm; m++) { 71 file = top majors[m] 72 if (system("test -f '" file "'") != 0) { 73 print "ERROR: can't find majors file '" file "'" > "/dev/stderr" 74 exit 1 75 } 76 while (getline < file) { 77 if ($1 == "include") { 78 majors[nm++] = substr($2, 2, length($2)-2); 79 } else if ($1 == "device-major") { 80 if ($3 == "char") { 81 chr[$2] = $4 82 if ($5 == "block") 83 blk[$2] = $6 84 } else if ($3 == "block") 85 blk[$2] = $4 86 } 87 } 88 close(file) 89 } 90 CONSOLE_CMAJOR = chr["cons"] 91 if (CONSOLE_CMAJOR == "") { 92 print "ERROR: no entry for 'cons' in majors file" > "/dev/stderr" 93 exit 1 94 } 95 96 # read MD config file for MD device targets 97 cfgfile = srcdir "/etc/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 103 getline CONFRCSID < cfgfile # RCS Id 104 getline < cfgfile # blank line 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 == "#ifndef" && $2 == "RAW_PART" && 139 RAWDISK_OFF) { 140 # special case to ignore #ifndef RAW_PART 141 # sections (e.g. in arm/include/disklabel.h, 142 # when it is already set in 143 # zaurus/include/disklabel.h) 144 while (getline < inc) { 145 # skip all lines upto the next #endif 146 if ($1 == "#endif") 147 break; 148 } 149 } else if ($1 == "#define" && $2 == "RAW_PART") 150 RAWDISK_OFF = $3 151 else if ($1 == "#include" && 152 $2 ~ "<.*/disklabel.h>" && 153 $2 !~ ".*nbinclude.*") 154 { 155 # wrapper, switch to the right file 156 incdir = substr($2, 2) 157 sub("/.*", "", incdir) 158 break; 159 } 160 } 161 close(inc) 162 163 if (diskpartitions) 164 break; 165 166 if (!incdir) { 167 print "ERROR: can't determine MAXPARTITIONS from include file '" inc "'" > "/dev/stderr" 168 exit 1 169 } 170 } 171 MKDISK = "makedisk_p" diskpartitions # routine to create disk devs 172 DISKMINOROFFSET = diskpartitions 173 if (diskbackcompat) { 174 MKDISK = MKDISK "high" 175 DISKMINOROFFSET = diskbackcompat 176 } 177 RAWDISK_NAME = sprintf("%c", 97 + RAWDISK_OFF) # a+offset 178 179 # read etc/master.passwd for user name->UID mapping 180 idfile = srcdir "/etc/master.passwd" 181 if (system("test -f '" idfile "'") != 0) { 182 print "ERROR: can't find password file '" idfile "'" > "/dev/stderr" 183 exit 1 184 } 185 oldFS=FS 186 FS=":" 187 while (getline < idfile) { 188 uid[$1] = $3 189 } 190 close(idfile) 191 FS=oldFS 192 193 # read etc/group for group name->GID mapping 194 idfile = srcdir "/etc/group" 195 if (system("test -f '" idfile "'") != 0) { 196 print "ERROR: can't find group file '" idfile "'" > "/dev/stderr" 197 exit 1 198 } 199 oldFS=FS 200 FS=":" 201 while (getline < idfile) { 202 gid[$1] = $3 203 } 204 close(idfile) 205 FS=oldFS 206 207 # initially no substitutions 208 devsubst = 0 209 deventry = "" 210} 211 212/%MI_DEVICES_BEGIN%/ { 213 devsubst = 1; 214 next 215} 216 217/%MI_DEVICES_END%/ { 218 devsubst = 0; 219 next 220} 221 222# output 'Generated from' lines 223/\$[N]etBSD/ { 224 print "#" 225 print "# Generated from:" 226 227 # MAKEDEV.awk (this script) RCS Id 228 ARCSID = "$NetBSD: MAKEDEV.awk,v 1.28 2019/11/03 12:03:35 martin Exp $" 229 gsub(/\$/, "", ARCSID) 230 print "# " ARCSID 231 232 # MAKEDEV.tmpl RCS Id 233 gsub(/\$/, "") 234 print $0 235 236 # MD MAKEDEV.conf RCS Id 237 # strip leading hash and insert machine subdirectory name 238 gsub(/\$/, "", CONFRCSID) 239 sub(/^\# /, "", CONFRCSID) 240 sub(/MAKEDEV.conf/, "etc." machine "/MAKEDEV.conf", CONFRCSID) 241 print "# " CONFRCSID 242 243 next # don't print the RCS Id line again 244} 245 246# filter the 'PLEASE RUN ...' paragraph 247/^\# PLEASE RUN/, /^\#\#\#\#\#\#/ { 248 next 249} 250 251# filter the device list 252/^\# Tapes/,/^$/ { 253 next 254} 255 256# filter the two unneeded makedisk_p* routines, leave only 257# the one used 258/^makedisk_p8\(\) \{/, /^\}/ { 259 if (MKDISK != "makedisk_p8") 260 next; 261} 262/^makedisk_p16\(\) \{/, /^\}/ { 263 if (MKDISK != "makedisk_p16") 264 next; 265} 266/^makedisk_p16high\(\) \{/, /^\}/ { 267 if (MKDISK != "makedisk_p16high") 268 next; 269} 270 271# special cases aside, handle normal line 272{ 273 sub(/^%MD_DEVICES%/, MDDEV) 274 sub(/%MKDISK%/, MKDISK) 275 sub(/%DISKMINOROFFSET%/, DISKMINOROFFSET) 276 sub(/%RAWDISK_OFF%/, RAWDISK_OFF) 277 sub(/%RAWDISK_NAME%/, RAWDISK_NAME) 278 sub(/%CONSOLE_CMAJOR%/, CONSOLE_CMAJOR) 279 parsed = "" 280 line = $0 281 while (match(line, /%[gu]id_[_a-z]*%/)) { 282 typ = substr(line, RSTART + 1, 3); 283 nam = substr(line, RSTART + 5, RLENGTH - 6); 284 if (typ == "uid") { 285 if (!(nam in uid)) { 286 print "ERROR unmatched uid in `" $0 "'" > \ 287 "/dev/stderr" 288 exit 1 289 } else 290 id = uid[nam]; 291 } else { 292 if (!(nam in gid)) { 293 print "ERROR unmatched gid in `" $0 "'" > \ 294 "/dev/stderr" 295 exit 1 296 } else 297 id = gid[nam]; 298 } 299 parsed = parsed substr(line, 1, RSTART - 1) id 300 line = substr(line, RSTART + RLENGTH) 301 } 302 $0 = parsed line 303 304 # if device substitutions are not active, do nothing more 305 if (!devsubst) { 306 print 307 next 308 } 309} 310 311# first line of device entry 312/^[a-z].*\)$/ { 313 if (length(deventry) > 0) { 314 # We have a previous entry to print. Replace all known 315 # character and block devices. If no unknown character 316 # or block device definition remains within the entry, 317 # print it to output, otherwise scrap it. 318 parsed = "" 319 while (match(deventry, /%[a-z0-9]*_(blk|chr)%/)) { 320 nam = substr(deventry, RSTART + 1, RLENGTH - 6); 321 typ = substr(deventry, RSTART + RLENGTH - 4, 3); 322 if (typ == "blk") { 323 if (!(nam in blk)) { 324 deventry = $0 325 next 326 } else 327 dev = blk[nam]; 328 } else { 329 if (!(nam in chr)) { 330 deventry = $0 331 next 332 } else 333 dev = chr[nam]; 334 } 335 parsed = parsed substr(deventry, 1, RSTART - 1) dev 336 deventry = substr(deventry, RSTART + RLENGTH) 337 } 338 339 print parsed deventry 340 } 341 deventry = $0 342 next 343} 344 345# template line within device substitution section - just keep appending 346# to the current entry 347{ 348 deventry = deventry "\n" $0 349} 350