#!/usr/bin/awk - # # $NetBSD: MAKEDEV.awk,v 1.26.2.2 2020/06/20 16:19:43 martin Exp $ # # Copyright (c) 2003 The NetBSD Foundation, Inc. # All rights reserved. # # This code is derived from software contributed to The NetBSD Foundation # by Jaromir Dolecek. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. # # Script to generate platform MAKEDEV script from MI template, MD # MAKEDEV.conf and MD/MI major lists # # Uses environment variables MACHINE/MACHINE_ARCH to select # appropriate files, and NETBSDSRCDIR to get root of source tree. BEGIN { # top of source tree, used to find major number list in kernel # sources machine = ENVIRON["MACHINE"] maarch = ENVIRON["MACHINE_ARCH"] srcdir = ENVIRON["NETBSDSRCDIR"] if (!machine || !maarch || !srcdir) { print "ERROR: 'MACHINE', 'MACHINE_ARCH' and 'NETBSDSRCDIR' must be set in environment" > "/dev/stderr" exit 1 } top = srcdir "/sys/" if (system("test -d '" top "'") != 0) { print "ERROR: can't find top of kernel source tree ('" top "' not a directory)" > "/dev/stderr" exit 1 } # file with major definitions majors[0] = "conf/majors" if ((index(maarch, "arm") != 0 || index(maarch, "aarch64")) && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0) majors[1] = "arch/arm/conf/majors.arm32"; else if (machine == "sbmips") majors[1] = "arch/evbmips/conf/majors.evbmips"; else if ((maarch == "powerpc" || maarch == "powerpc64") && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0) majors[1] = "arch/powerpc/conf/majors.powerpc"; else majors[1] = "arch/" machine "/conf/majors." machine; nm = 2; # process all files with majors and fill the chr[] and blk[] # arrays, used in template processing for (m = 0; m < nm; m++) { file = top majors[m] if (system("test -f '" file "'") != 0) { print "ERROR: can't find majors file '" file "'" > "/dev/stderr" exit 1 } while (getline < file) { if ($1 == "include") { majors[nm++] = substr($2, 2, length($2)-2); } else if ($1 == "device-major") { if ($3 == "char") { chr[$2] = $4 if ($5 == "block") blk[$2] = $6 } else if ($3 == "block") blk[$2] = $4 } } close(file) } CONSOLE_CMAJOR = chr["cons"] if (CONSOLE_CMAJOR == "") { print "ERROR: no entry for 'cons' in majors file" > "/dev/stderr" exit 1 } # read MD config file for MD device targets cfgfile = srcdir "/etc/etc." machine "/MAKEDEV.conf" if (system("test -f '" cfgfile "'") != 0) { print "ERROR: no platform MAKEDEV.conf - '" cfgfile "' doesn't exist" > "/dev/stderr" exit 1 } # skip first two lines getline CONFRCSID < cfgfile # RCS Id getline < cfgfile # blank line MDDEV = 0 # MD device targets while (getline < cfgfile) { # # Perform the same blk / chr subsitution that happens below. # md_deventry = $0 if (match(md_deventry, /%[a-z0-9]*_(blk|chr)%/)) { nam = substr(md_deventry, RSTART + 1, RLENGTH - 6); typ = substr(md_deventry, RSTART + RLENGTH - 4, 3); dev = "" if (typ == "blk") { if (nam in blk) { dev = blk[nam]; } } else { if (nam in chr) { dev = chr[nam]; } } if (dev != "") { parsed = substr(md_deventry, 1, RSTART - 1) dev md_deventry = substr(md_deventry, RSTART + RLENGTH) } md_deventry = parsed md_deventry } if (MDDEV) MDDEV = MDDEV "\n" md_deventry else MDDEV = md_deventry } close(cfgfile) # determine number of partitions used by platform # there are three variants in tree: # 1. MAXPARTITIONS = 8 # 2. MAXPARTITIONS = 16 with no back compat mapping # 3. MAXPARTITIONS = 16 with back compat with old limit of 8 # currently all archs, which moved from 8->16 use same # scheme for mapping disk minors, high minor offset # if this changes, the below needs to be adjusted and # additional makedisk_p16foo needs to be added incdir = machine diskpartitions = 0 diskbackcompat = 0 while (1) { inc = top "arch/" incdir "/include/disklabel.h" if (system("test -f '" inc "'") != 0) { print "ERROR: can't find kernel include file '" inc "'" > "/dev/stderr" exit 1 } incdir = 0 while (getline < inc) { if ($1 == "#define" && $2 == "MAXPARTITIONS") diskpartitions = $3 else if ($1 == "#define" && $2 == "OLDMAXPARTITIONS") diskbackcompat = $3 else if ($1 == "#ifndef" && $2 == "RAW_PART" && RAWDISK_OFF) { # special case to ignore #ifndef RAW_PART # sections (e.g. in arm/include/disklabel.h, # when it is already set in # zaurus/include/disklabel.h) while (getline < inc) { # skip all lines upto the next #endif if ($1 == "#endif") break; } } else if ($1 == "#define" && $2 == "RAW_PART") RAWDISK_OFF = $3 else if ($1 == "#include" && $2 ~ "<.*/disklabel.h>" && $2 !~ ".*nbinclude.*") { # wrapper, switch to the right file incdir = substr($2, 2) sub("/.*", "", incdir) break; } } close(inc) if (diskpartitions) break; if (!incdir) { print "ERROR: can't determine MAXPARTITIONS from include file '" inc "'" > "/dev/stderr" exit 1 } } MKDISK = "makedisk_p" diskpartitions # routine to create disk devs DISKMINOROFFSET = diskpartitions if (diskbackcompat) { MKDISK = MKDISK "high" DISKMINOROFFSET = diskbackcompat } RAWDISK_NAME = sprintf("%c", 97 + RAWDISK_OFF) # a+offset # read etc/master.passwd for user name->UID mapping idfile = srcdir "/etc/master.passwd" if (system("test -f '" idfile "'") != 0) { print "ERROR: can't find password file '" idfile "'" > "/dev/stderr" exit 1 } oldFS=FS FS=":" while (getline < idfile) { uid[$1] = $3 } close(idfile) FS=oldFS # read etc/group for group name->GID mapping idfile = srcdir "/etc/group" if (system("test -f '" idfile "'") != 0) { print "ERROR: can't find group file '" idfile "'" > "/dev/stderr" exit 1 } oldFS=FS FS=":" while (getline < idfile) { gid[$1] = $3 } close(idfile) FS=oldFS # initially no substitutions devsubst = 0 deventry = "" } /%MI_DEVICES_BEGIN%/ { devsubst = 1; next } /%MI_DEVICES_END%/ { devsubst = 0; next } # output 'Generated from' lines /\$[N]etBSD/ { print "#" print "# Generated from:" # MAKEDEV.awk (this script) RCS Id ARCSID = "$NetBSD: MAKEDEV.awk,v 1.26.2.2 2020/06/20 16:19:43 martin Exp $" gsub(/\$/, "", ARCSID) print "# " ARCSID # MAKEDEV.tmpl RCS Id gsub(/\$/, "") print $0 # MD MAKEDEV.conf RCS Id # strip leading hash and insert machine subdirectory name gsub(/\$/, "", CONFRCSID) sub(/^\# /, "", CONFRCSID) sub(/MAKEDEV.conf/, "etc." machine "/MAKEDEV.conf", CONFRCSID) print "# " CONFRCSID next # don't print the RCS Id line again } # filter the 'PLEASE RUN ...' paragraph /^\# PLEASE RUN/, /^\#\#\#\#\#\#/ { next } # filter the device list /^\# Tapes/,/^$/ { next } # filter the two unneeded makedisk_p* routines, leave only # the one used /^makedisk_p8\(\) \{/, /^\}/ { if (MKDISK != "makedisk_p8") next; } /^makedisk_p16\(\) \{/, /^\}/ { if (MKDISK != "makedisk_p16") next; } /^makedisk_p16high\(\) \{/, /^\}/ { if (MKDISK != "makedisk_p16high") next; } # special cases aside, handle normal line { sub(/^%MD_DEVICES%/, MDDEV) sub(/%MKDISK%/, MKDISK) sub(/%DISKMINOROFFSET%/, DISKMINOROFFSET) sub(/%RAWDISK_OFF%/, RAWDISK_OFF) sub(/%RAWDISK_NAME%/, RAWDISK_NAME) sub(/%CONSOLE_CMAJOR%/, CONSOLE_CMAJOR) parsed = "" line = $0 while (match(line, /%[gu]id_[_a-z]*%/)) { typ = substr(line, RSTART + 1, 3); nam = substr(line, RSTART + 5, RLENGTH - 6); if (typ == "uid") { if (!(nam in uid)) { print "ERROR unmatched uid in `" $0 "'" > \ "/dev/stderr" exit 1 } else id = uid[nam]; } else { if (!(nam in gid)) { print "ERROR unmatched gid in `" $0 "'" > \ "/dev/stderr" exit 1 } else id = gid[nam]; } parsed = parsed substr(line, 1, RSTART - 1) id line = substr(line, RSTART + RLENGTH) } $0 = parsed line # if device substitutions are not active, do nothing more if (!devsubst) { print next } } # first line of device entry /^[a-z].*\)$/ { if (length(deventry) > 0) { # We have a previous entry to print. Replace all known # character and block devices. If no unknown character # or block device definition remains within the entry, # print it to output, otherwise scrap it. parsed = "" while (match(deventry, /%[a-z]*_(blk|chr)%/)) { nam = substr(deventry, RSTART + 1, RLENGTH - 6); typ = substr(deventry, RSTART + RLENGTH - 4, 3); if (typ == "blk") { if (!(nam in blk)) { deventry = $0 next } else dev = blk[nam]; } else { if (!(nam in chr)) { deventry = $0 next } else dev = chr[nam]; } parsed = parsed substr(deventry, 1, RSTART - 1) dev deventry = substr(deventry, RSTART + RLENGTH) } print parsed deventry } deventry = $0 next } # template line within device substitution section - just keep appending # to the current entry { deventry = deventry "\n" $0 }