MAKEDEV.awk revision 1.26
1 #!/usr/bin/awk - 2 # 3 # $NetBSD: MAKEDEV.awk,v 1.26 2019/06/13 20:54:04 christos 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 39 BEGIN { 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 == "#define" && $2 == "RAW_PART") 139 RAWDISK_OFF = $3 140 else if ($1 == "#include" && 141 $2 ~ "<.*/disklabel.h>" && 142 $2 !~ ".*nbinclude.*") 143 { 144 # wrapper, switch to the right file 145 incdir = substr($2, 2) 146 sub("/.*", "", incdir) 147 break; 148 } 149 } 150 close(inc) 151 152 if (diskpartitions) 153 break; 154 155 if (!incdir) { 156 print "ERROR: can't determine MAXPARTITIONS from include file '" inc "'" > "/dev/stderr" 157 exit 1 158 } 159 } 160 MKDISK = "makedisk_p" diskpartitions # routine to create disk devs 161 DISKMINOROFFSET = diskpartitions 162 if (diskbackcompat) { 163 MKDISK = MKDISK "high" 164 DISKMINOROFFSET = diskbackcompat 165 } 166 RAWDISK_NAME = sprintf("%c", 97 + RAWDISK_OFF) # a+offset 167 168 # read etc/master.passwd for user name->UID mapping 169 idfile = srcdir "/etc/master.passwd" 170 if (system("test -f '" idfile "'") != 0) { 171 print "ERROR: can't find password file '" idfile "'" > "/dev/stderr" 172 exit 1 173 } 174 oldFS=FS 175 FS=":" 176 while (getline < idfile) { 177 uid[$1] = $3 178 } 179 close(idfile) 180 FS=oldFS 181 182 # read etc/group for group name->GID mapping 183 idfile = srcdir "/etc/group" 184 if (system("test -f '" idfile "'") != 0) { 185 print "ERROR: can't find group file '" idfile "'" > "/dev/stderr" 186 exit 1 187 } 188 oldFS=FS 189 FS=":" 190 while (getline < idfile) { 191 gid[$1] = $3 192 } 193 close(idfile) 194 FS=oldFS 195 196 # initially no substitutions 197 devsubst = 0 198 deventry = "" 199 } 200 201 /%MI_DEVICES_BEGIN%/ { 202 devsubst = 1; 203 next 204 } 205 206 /%MI_DEVICES_END%/ { 207 devsubst = 0; 208 next 209 } 210 211 # output 'Generated from' lines 212 /\$[N]etBSD/ { 213 print "#" 214 print "# Generated from:" 215 216 # MAKEDEV.awk (this script) RCS Id 217 ARCSID = "$NetBSD: MAKEDEV.awk,v 1.26 2019/06/13 20:54:04 christos Exp $" 218 gsub(/\$/, "", ARCSID) 219 print "# " ARCSID 220 221 # MAKEDEV.tmpl RCS Id 222 gsub(/\$/, "") 223 print $0 224 225 # MD MAKEDEV.conf RCS Id 226 # strip leading hash and insert machine subdirectory name 227 gsub(/\$/, "", CONFRCSID) 228 sub(/^\# /, "", CONFRCSID) 229 sub(/MAKEDEV.conf/, "etc." machine "/MAKEDEV.conf", CONFRCSID) 230 print "# " CONFRCSID 231 232 next # don't print the RCS Id line again 233 } 234 235 # filter the 'PLEASE RUN ...' paragraph 236 /^\# PLEASE RUN/, /^\#\#\#\#\#\#/ { 237 next 238 } 239 240 # filter the device list 241 /^\# Tapes/,/^$/ { 242 next 243 } 244 245 # filter the two unneeded makedisk_p* routines, leave only 246 # the one used 247 /^makedisk_p8\(\) \{/, /^\}/ { 248 if (MKDISK != "makedisk_p8") 249 next; 250 } 251 /^makedisk_p16\(\) \{/, /^\}/ { 252 if (MKDISK != "makedisk_p16") 253 next; 254 } 255 /^makedisk_p16high\(\) \{/, /^\}/ { 256 if (MKDISK != "makedisk_p16high") 257 next; 258 } 259 260 # special cases aside, handle normal line 261 { 262 sub(/^%MD_DEVICES%/, MDDEV) 263 sub(/%MKDISK%/, MKDISK) 264 sub(/%DISKMINOROFFSET%/, DISKMINOROFFSET) 265 sub(/%RAWDISK_OFF%/, RAWDISK_OFF) 266 sub(/%RAWDISK_NAME%/, RAWDISK_NAME) 267 sub(/%CONSOLE_CMAJOR%/, CONSOLE_CMAJOR) 268 parsed = "" 269 line = $0 270 while (match(line, /%[gu]id_[_a-z]*%/)) { 271 typ = substr(line, RSTART + 1, 3); 272 nam = substr(line, RSTART + 5, RLENGTH - 6); 273 if (typ == "uid") { 274 if (!(nam in uid)) { 275 print "ERROR unmatched uid in `" $0 "'" > \ 276 "/dev/stderr" 277 exit 1 278 } else 279 id = uid[nam]; 280 } else { 281 if (!(nam in gid)) { 282 print "ERROR unmatched gid in `" $0 "'" > \ 283 "/dev/stderr" 284 exit 1 285 } else 286 id = gid[nam]; 287 } 288 parsed = parsed substr(line, 1, RSTART - 1) id 289 line = substr(line, RSTART + RLENGTH) 290 } 291 $0 = parsed line 292 293 # if device substitutions are not active, do nothing more 294 if (!devsubst) { 295 print 296 next 297 } 298 } 299 300 # first line of device entry 301 /^[a-z].*\)$/ { 302 if (length(deventry) > 0) { 303 # We have a previous entry to print. Replace all known 304 # character and block devices. If no unknown character 305 # or block device definition remains within the entry, 306 # print it to output, otherwise scrap it. 307 parsed = "" 308 while (match(deventry, /%[a-z]*_(blk|chr)%/)) { 309 nam = substr(deventry, RSTART + 1, RLENGTH - 6); 310 typ = substr(deventry, RSTART + RLENGTH - 4, 3); 311 if (typ == "blk") { 312 if (!(nam in blk)) { 313 deventry = $0 314 next 315 } else 316 dev = blk[nam]; 317 } else { 318 if (!(nam in chr)) { 319 deventry = $0 320 next 321 } else 322 dev = chr[nam]; 323 } 324 parsed = parsed substr(deventry, 1, RSTART - 1) dev 325 deventry = substr(deventry, RSTART + RLENGTH) 326 } 327 328 print parsed deventry 329 } 330 deventry = $0 331 next 332 } 333 334 # template line within device substitution section - just keep appending 335 # to the current entry 336 { 337 deventry = deventry "\n" $0 338 } 339
Indexes created Sat Oct 25 10:09:55 GMT 2025