Annotation of src/etc/MAKEDEV.awk, Revision 1.21
1.1 jdolecek 1: #!/usr/bin/awk -
2: #
1.21 ! mrg 3: # $NetBSD: MAKEDEV.awk,v 1.20 2008/04/30 13:10:49 martin Exp $
1.1 jdolecek 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:
1.2 jdolecek 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:
1.1 jdolecek 39: BEGIN {
40: # top of source tree, used to find major number list in kernel
41: # sources
1.11 lukem 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/"
1.1 jdolecek 50: if (system("test -d '" top "'") != 0) {
1.4 jdolecek 51: print "ERROR: can't find top of kernel source tree ('" top "' not a directory)" > "/dev/stderr"
1.1 jdolecek 52: exit 1
53: }
54:
55:
56: # file with major definitions
57: majors[0] = "conf/majors"
1.9 jdolecek 58: if ((maarch == "arm" || maarch == "armeb") && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0)
1.1 jdolecek 59: majors[1] = "arch/arm/conf/majors.arm32";
1.18 scw 60: else if (machine == "sbmips")
1.6 jdolecek 61: majors[1] = "arch/evbmips/conf/majors.evbmips";
1.21 ! mrg 62: else if ((maarch == "powerpc" || maarch == "powerpc64") && system("test -f '" top "arch/" machine "/conf/majors." machine "'") != 0)
1.19 garbled 63: majors[1] = "arch/powerpc/conf/majors.powerpc";
1.6 jdolecek 64: else
1.1 jdolecek 65: majors[1] = "arch/" machine "/conf/majors." machine;
66:
67: # process all files with majors and fill the chr[] and blk[]
68: # arrays, used in template processing
1.3 itojun 69: for (m in majors) {
1.1 jdolecek 70: file = top majors[m]
1.4 jdolecek 71: if (system("test -f '" file "'") != 0) {
72: print "ERROR: can't find majors file '" file "'" > "/dev/stderr"
73: exit 1
74: }
1.1 jdolecek 75: while (getline < file) {
76: if ($1 == "device-major") {
77: if ($3 == "char") {
78: chr[$2] = $4
79: if ($5 == "block")
80: blk[$2] = $6
81: } else if ($3 == "block")
82: blk[$2] = $4
83: }
84: }
1.5 jdolecek 85: close(file)
1.1 jdolecek 86: }
1.17 dsl 87: CONSOLE_CMAJOR = chr["cons"]
88: if (CONSOLE_CMAJOR == "") {
89: print "ERROR: no entry for 'cons' in majors file" > "/dev/stderr"
90: exit 1
91: }
1.1 jdolecek 92:
1.5 jdolecek 93: # read MD config file for MD device targets
1.11 lukem 94: cfgfile = srcdir "/etc/etc." machine "/MAKEDEV.conf"
1.5 jdolecek 95: if (system("test -f '" cfgfile "'") != 0) {
1.7 jdolecek 96: print "ERROR: no platform MAKEDEV.conf - '" cfgfile "' doesn't exist" > "/dev/stderr"
1.5 jdolecek 97: exit 1
98: }
1.12 jdolecek 99: # skip first two lines
100: getline CONFRCSID < cfgfile # RCS Id
101: getline < cfgfile # blank line
1.2 jdolecek 102: MDDEV = 0 # MD device targets
103: while (getline < cfgfile) {
1.5 jdolecek 104: if (MDDEV)
105: MDDEV = MDDEV "\n" $0
106: else
107: MDDEV = $0
108: }
109: close(cfgfile)
110:
111: # determine number of partitions used by platform
112: # there are three variants in tree:
113: # 1. MAXPARTITIONS = 8
114: # 2. MAXPARTITIONS = 16 with no back compat mapping
115: # 3. MAXPARTITIONS = 16 with back compat with old limit of 8
116: # currently all archs, which moved from 8->16 use same
117: # scheme for mapping disk minors, high minor offset
118: # if this changes, the below needs to be adjusted and
119: # additional makedisk_p16foo needs to be added
120: incdir = machine
121: diskpartitions = 0
122: diskbackcompat = 0
123: while (1) {
124: inc = top "arch/" incdir "/include/disklabel.h"
125: if (system("test -f '" inc "'") != 0) {
126: print "ERROR: can't find kernel include file '" inc "'" > "/dev/stderr"
127: exit 1
128: }
129: incdir = 0
130: while (getline < inc) {
1.6 jdolecek 131: if ($1 == "#define" && $2 == "MAXPARTITIONS")
1.5 jdolecek 132: diskpartitions = $3
1.6 jdolecek 133: else if ($1 == "#define" && $2 == "OLDMAXPARTITIONS")
134: diskbackcompat = $3
135: else if ($1 == "#define" && $2 == "RAW_PART")
136: RAWDISK_OFF = $3
1.16 he 137: else if ($1 == "#include" &&
138: $2 ~ "<.*/disklabel.h>" &&
139: $2 !~ ".*nbinclude.*")
140: {
1.5 jdolecek 141: # wrapper, switch to the right file
142: incdir = substr($2, 2)
143: sub("/.*", "", incdir)
144: break;
145: }
146: }
1.13 enami 147: close(inc)
1.5 jdolecek 148:
149: if (diskpartitions)
150: break;
151:
152: if (!incdir) {
153: print "ERROR: can't determine MAXPARTITIONS from include file '" inc "'" > "/dev/stderr"
154: exit 1
155: }
1.2 jdolecek 156: }
1.5 jdolecek 157: MKDISK = "makedisk_p" diskpartitions # routine to create disk devs
1.6 jdolecek 158: DISKMINOROFFSET = diskpartitions
159: if (diskbackcompat) {
1.5 jdolecek 160: MKDISK = MKDISK "high"
1.6 jdolecek 161: DISKMINOROFFSET = diskbackcompat
162: }
163: RAWDISK_NAME = sprintf("%c", 97 + RAWDISK_OFF) # a+offset
1.2 jdolecek 164:
1.11 lukem 165: # read etc/master.passwd for user name->UID mapping
166: idfile = srcdir "/etc/master.passwd"
167: if (system("test -f '" idfile "'") != 0) {
168: print "ERROR: can't find password file '" idfile "'" > "/dev/stderr"
169: exit 1
170: }
171: oldFS=FS
172: FS=":"
173: while (getline < idfile) {
174: uid[$1] = $3
175: }
176: close(idfile)
177: FS=oldFS
178:
179: # read etc/group for group name->GID mapping
180: idfile = srcdir "/etc/group"
181: if (system("test -f '" idfile "'") != 0) {
182: print "ERROR: can't find group file '" idfile "'" > "/dev/stderr"
183: exit 1
184: }
185: oldFS=FS
186: FS=":"
187: while (getline < idfile) {
188: gid[$1] = $3
189: }
190: close(idfile)
191: FS=oldFS
192:
1.1 jdolecek 193: # initially no substitutions
194: devsubst = 0
195: deventry = ""
196: }
197:
198: /%MI_DEVICES_BEGIN%/ {
199: devsubst = 1;
200: next
201: }
202:
203: /%MI_DEVICES_END%/ {
204: devsubst = 0;
205: next
206: }
207:
1.12 jdolecek 208: # output 'Generated from' lines
209: /\$[N]etBSD/ {
210: print "#"
211: print "# Generated from:"
212:
213: # MAKEDEV.awk (this script) RCS Id
1.21 ! mrg 214: ARCSID = "$NetBSD: MAKEDEV.awk,v 1.20 2008/04/30 13:10:49 martin Exp $"
1.12 jdolecek 215: gsub(/\$/, "", ARCSID)
216: print "# " ARCSID
217:
218: # MAKEDEV.tmpl RCS Id
219: gsub(/\$/, "")
220: print $0
221:
222: # MD MAKEDEV.conf RCS Id
223: # strip leading hash and insert machine subdirectory name
224: gsub(/\$/, "", CONFRCSID)
225: sub(/^\# /, "", CONFRCSID)
226: sub(/MAKEDEV.conf/, "etc." machine "/MAKEDEV.conf", CONFRCSID)
227: print "# " CONFRCSID
228:
229: next # don't print the RCS Id line again
230: }
231:
232: # filter the 'PLEASE RUN ...' paragraph
233: /^\# PLEASE RUN/, /^\#\#\#\#\#\#/ {
234: next
235: }
236:
237: # filter the device list
238: /^\# Tapes/,/^$/ {
239: next
240: }
241:
1.4 jdolecek 242: # filter the two unneeded makedisk_p* routines, leave only
243: # the one used
1.10 dmcmahil 244: /^makedisk_p8\(\) \{/, /^\}/ {
1.4 jdolecek 245: if (MKDISK != "makedisk_p8")
246: next;
247: }
1.10 dmcmahil 248: /^makedisk_p16\(\) \{/, /^\}/ {
1.4 jdolecek 249: if (MKDISK != "makedisk_p16")
250: next;
251: }
1.10 dmcmahil 252: /^makedisk_p16high\(\) \{/, /^\}/ {
1.4 jdolecek 253: if (MKDISK != "makedisk_p16high")
254: next;
255: }
256:
1.11 lukem 257: # special cases aside, handle normal line
1.1 jdolecek 258: {
1.8 jdolecek 259: sub(/^%MD_DEVICES%/, MDDEV)
260: sub(/%MKDISK%/, MKDISK)
261: sub(/%DISKMINOROFFSET%/, DISKMINOROFFSET)
262: sub(/%RAWDISK_OFF%/, RAWDISK_OFF)
263: sub(/%RAWDISK_NAME%/, RAWDISK_NAME)
1.17 dsl 264: sub(/%CONSOLE_CMAJOR%/, CONSOLE_CMAJOR)
1.14 enami 265: parsed = ""
266: line = $0
267: while (match(line, /%[gu]id_[a-z]*%/)) {
268: typ = substr(line, RSTART + 1, 3);
269: nam = substr(line, RSTART + 5, RLENGTH - 6);
270: if (typ == "uid") {
271: if (!(nam in uid)) {
272: print "ERROR unmatched uid in `" $0 "'" > \
273: "/dev/stderr"
274: exit 1
275: } else
276: id = uid[nam];
277: } else {
278: if (!(nam in gid)) {
279: print "ERROR unmatched gid in `" $0 "'" > \
280: "/dev/stderr"
281: exit 1
282: } else
283: id = gid[nam];
284: }
1.15 enami 285: parsed = parsed substr(line, 1, RSTART - 1) id
1.14 enami 286: line = substr(line, RSTART + RLENGTH)
1.11 lukem 287: }
1.14 enami 288: $0 = parsed line
1.2 jdolecek 289:
1.1 jdolecek 290: # if device substitutions are not active, do nothing more
291: if (!devsubst) {
292: print
293: next
294: }
295: }
296:
297: # first line of device entry
298: /^[a-z].*\)$/ {
299: if (length(deventry) > 0) {
300: # We have a previous entry to print. Replace all known
301: # character and block devices. If no unknown character
302: # or block device definition remains within the entry,
303: # print it to output, otherwise scrap it.
1.14 enami 304: parsed = ""
305: while (match(deventry, /%[a-z]*_(blk|chr)%/)) {
306: nam = substr(deventry, RSTART + 1, RLENGTH - 6);
307: typ = substr(deventry, RSTART + RLENGTH - 4, 3);
308: if (typ == "blk") {
309: if (!(nam in blk)) {
310: deventry = $0
311: next
312: } else
313: dev = blk[nam];
314: } else {
315: if (!(nam in chr)) {
316: deventry = $0
317: next
318: } else
319: dev = chr[nam];
320: }
1.15 enami 321: parsed = parsed substr(deventry, 1, RSTART - 1) dev
1.14 enami 322: deventry = substr(deventry, RSTART + RLENGTH)
323: }
1.1 jdolecek 324:
1.14 enami 325: print parsed deventry
1.1 jdolecek 326: }
327: deventry = $0
328: next
329: }
330:
331: # template line within device substitution section - just keep appending
332: # to the current entry
333: {
334: deventry = deventry "\n" $0
335: }
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