MAKEDEV.awk revision 1.18
1 #!/usr/bin/awk - 2 # 3 # $NetBSD: MAKEDEV.awk,v 1.18 2007/04/08 09:35:25 scw 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 machine = ENVIRON["MACHINE"] 50 maarch = ENVIRON["MACHINE_ARCH"] 51 srcdir = ENVIRON["NETBSDSRCDIR"] 52 if (!machine || !maarch || !srcdir) { 53 print "ERROR: 'MACHINE', 'MACHINE_ARCH' and 'NETBSDSRCDIR' must be set in environment" > "/dev/stderr" 54 exit 1 55 } 56 top = srcdir "/sys/" 57 if (system("test -d '" top "'") != 0) { 58 print "ERROR: can't find top of kernel source tree ('" top "' not a directory)" > "/dev/stderr" 59 exit 1 60 } 61 62 63 # file with major definitions 64 majors[0] = "conf/majors" 65 if ((maarch == "arm" || maarch == "armeb") && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0) 66 majors[1] = "arch/arm/conf/majors.arm32"; 67 else if (machine == "sbmips") 68 majors[1] = "arch/evbmips/conf/majors.evbmips"; 69 else 70 majors[1] = "arch/" machine "/conf/majors." machine; 71 72 # process all files with majors and fill the chr[] and blk[] 73 # arrays, used in template processing 74 for (m in majors) { 75 file = top majors[m] 76 if (system("test -f '" file "'") != 0) { 77 print "ERROR: can't find majors file '" file "'" > "/dev/stderr" 78 exit 1 79 } 80 while (getline < file) { 81 if ($1 == "device-major") { 82 if ($3 == "char") { 83 chr[$2] = $4 84 if ($5 == "block") 85 blk[$2] = $6 86 } else if ($3 == "block") 87 blk[$2] = $4 88 } 89 } 90 close(file) 91 } 92 CONSOLE_CMAJOR = chr["cons"] 93 if (CONSOLE_CMAJOR == "") { 94 print "ERROR: no entry for 'cons' in majors file" > "/dev/stderr" 95 exit 1 96 } 97 98 # read MD config file for MD device targets 99 cfgfile = srcdir "/etc/etc." machine "/MAKEDEV.conf" 100 if (system("test -f '" cfgfile "'") != 0) { 101 print "ERROR: no platform MAKEDEV.conf - '" cfgfile "' doesn't exist" > "/dev/stderr" 102 exit 1 103 } 104 # skip first two lines 105 getline CONFRCSID < cfgfile # RCS Id 106 getline < cfgfile # blank line 107 MDDEV = 0 # MD device targets 108 while (getline < cfgfile) { 109 if (MDDEV) 110 MDDEV = MDDEV "\n" $0 111 else 112 MDDEV = $0 113 } 114 close(cfgfile) 115 116 # determine number of partitions used by platform 117 # there are three variants in tree: 118 # 1. MAXPARTITIONS = 8 119 # 2. MAXPARTITIONS = 16 with no back compat mapping 120 # 3. MAXPARTITIONS = 16 with back compat with old limit of 8 121 # currently all archs, which moved from 8->16 use same 122 # scheme for mapping disk minors, high minor offset 123 # if this changes, the below needs to be adjusted and 124 # additional makedisk_p16foo needs to be added 125 incdir = machine 126 diskpartitions = 0 127 diskbackcompat = 0 128 while (1) { 129 inc = top "arch/" incdir "/include/disklabel.h" 130 if (system("test -f '" inc "'") != 0) { 131 print "ERROR: can't find kernel include file '" inc "'" > "/dev/stderr" 132 exit 1 133 } 134 incdir = 0 135 while (getline < inc) { 136 if ($1 == "#define" && $2 == "MAXPARTITIONS") 137 diskpartitions = $3 138 else if ($1 == "#define" && $2 == "OLDMAXPARTITIONS") 139 diskbackcompat = $3 140 else if ($1 == "#define" && $2 == "RAW_PART") 141 RAWDISK_OFF = $3 142 else if ($1 == "#include" && 143 $2 ~ "<.*/disklabel.h>" && 144 $2 !~ ".*nbinclude.*") 145 { 146 # wrapper, switch to the right file 147 incdir = substr($2, 2) 148 sub("/.*", "", incdir) 149 break; 150 } 151 } 152 close(inc) 153 154 if (diskpartitions) 155 break; 156 157 if (!incdir) { 158 print "ERROR: can't determine MAXPARTITIONS from include file '" inc "'" > "/dev/stderr" 159 exit 1 160 } 161 } 162 MKDISK = "makedisk_p" diskpartitions # routine to create disk devs 163 DISKMINOROFFSET = diskpartitions 164 if (diskbackcompat) { 165 MKDISK = MKDISK "high" 166 DISKMINOROFFSET = diskbackcompat 167 } 168 RAWDISK_NAME = sprintf("%c", 97 + RAWDISK_OFF) # a+offset 169 170 # read etc/master.passwd for user name->UID mapping 171 idfile = srcdir "/etc/master.passwd" 172 if (system("test -f '" idfile "'") != 0) { 173 print "ERROR: can't find password file '" idfile "'" > "/dev/stderr" 174 exit 1 175 } 176 oldFS=FS 177 FS=":" 178 while (getline < idfile) { 179 uid[$1] = $3 180 } 181 close(idfile) 182 FS=oldFS 183 184 # read etc/group for group name->GID mapping 185 idfile = srcdir "/etc/group" 186 if (system("test -f '" idfile "'") != 0) { 187 print "ERROR: can't find group file '" idfile "'" > "/dev/stderr" 188 exit 1 189 } 190 oldFS=FS 191 FS=":" 192 while (getline < idfile) { 193 gid[$1] = $3 194 } 195 close(idfile) 196 FS=oldFS 197 198 # initially no substitutions 199 devsubst = 0 200 deventry = "" 201 } 202 203 /%MI_DEVICES_BEGIN%/ { 204 devsubst = 1; 205 next 206 } 207 208 /%MI_DEVICES_END%/ { 209 devsubst = 0; 210 next 211 } 212 213 # output 'Generated from' lines 214 /\$[N]etBSD/ { 215 print "#" 216 print "# Generated from:" 217 218 # MAKEDEV.awk (this script) RCS Id 219 ARCSID = "$NetBSD: MAKEDEV.awk,v 1.18 2007/04/08 09:35:25 scw Exp $" 220 gsub(/\$/, "", ARCSID) 221 print "# " ARCSID 222 223 # MAKEDEV.tmpl RCS Id 224 gsub(/\$/, "") 225 print $0 226 227 # MD MAKEDEV.conf RCS Id 228 # strip leading hash and insert machine subdirectory name 229 gsub(/\$/, "", CONFRCSID) 230 sub(/^\# /, "", CONFRCSID) 231 sub(/MAKEDEV.conf/, "etc." machine "/MAKEDEV.conf", CONFRCSID) 232 print "# " CONFRCSID 233 234 next # don't print the RCS Id line again 235 } 236 237 # filter the 'PLEASE RUN ...' paragraph 238 /^\# PLEASE RUN/, /^\#\#\#\#\#\#/ { 239 next 240 } 241 242 # filter the device list 243 /^\# Tapes/,/^$/ { 244 next 245 } 246 247 # filter the two unneeded makedisk_p* routines, leave only 248 # the one used 249 /^makedisk_p8\(\) \{/, /^\}/ { 250 if (MKDISK != "makedisk_p8") 251 next; 252 } 253 /^makedisk_p16\(\) \{/, /^\}/ { 254 if (MKDISK != "makedisk_p16") 255 next; 256 } 257 /^makedisk_p16high\(\) \{/, /^\}/ { 258 if (MKDISK != "makedisk_p16high") 259 next; 260 } 261 262 # special cases aside, handle normal line 263 { 264 sub(/^%MD_DEVICES%/, MDDEV) 265 sub(/%MKDISK%/, MKDISK) 266 sub(/%DISKMINOROFFSET%/, DISKMINOROFFSET) 267 sub(/%RAWDISK_OFF%/, RAWDISK_OFF) 268 sub(/%RAWDISK_NAME%/, RAWDISK_NAME) 269 sub(/%CONSOLE_CMAJOR%/, CONSOLE_CMAJOR) 270 parsed = "" 271 line = $0 272 while (match(line, /%[gu]id_[a-z]*%/)) { 273 typ = substr(line, RSTART + 1, 3); 274 nam = substr(line, RSTART + 5, RLENGTH - 6); 275 if (typ == "uid") { 276 if (!(nam in uid)) { 277 print "ERROR unmatched uid in `" $0 "'" > \ 278 "/dev/stderr" 279 exit 1 280 } else 281 id = uid[nam]; 282 } else { 283 if (!(nam in gid)) { 284 print "ERROR unmatched gid in `" $0 "'" > \ 285 "/dev/stderr" 286 exit 1 287 } else 288 id = gid[nam]; 289 } 290 parsed = parsed substr(line, 1, RSTART - 1) id 291 line = substr(line, RSTART + RLENGTH) 292 } 293 $0 = parsed line 294 295 # if device substitutions are not active, do nothing more 296 if (!devsubst) { 297 print 298 next 299 } 300 } 301 302 # first line of device entry 303 /^[a-z].*\)$/ { 304 if (length(deventry) > 0) { 305 # We have a previous entry to print. Replace all known 306 # character and block devices. If no unknown character 307 # or block device definition remains within the entry, 308 # print it to output, otherwise scrap it. 309 parsed = "" 310 while (match(deventry, /%[a-z]*_(blk|chr)%/)) { 311 nam = substr(deventry, RSTART + 1, RLENGTH - 6); 312 typ = substr(deventry, RSTART + RLENGTH - 4, 3); 313 if (typ == "blk") { 314 if (!(nam in blk)) { 315 deventry = $0 316 next 317 } else 318 dev = blk[nam]; 319 } else { 320 if (!(nam in chr)) { 321 deventry = $0 322 next 323 } else 324 dev = chr[nam]; 325 } 326 parsed = parsed substr(deventry, 1, RSTART - 1) dev 327 deventry = substr(deventry, RSTART + RLENGTH) 328 } 329 330 print parsed deventry 331 } 332 deventry = $0 333 next 334 } 335 336 # template line within device substitution section - just keep appending 337 # to the current entry 338 { 339 deventry = deventry "\n" $0 340 } 341
Indexes created Thu Oct 23 22:10:10 GMT 2025