Annotation of src/etc/MAKEDEV.awk, Revision 1.2
1.1 jdolecek 1: #!/usr/bin/awk -
2: #
1.2 ! jdolecek 3: # $NetBSD: MAKEDEV.awk,v 1.1 2003/10/13 09:37:45 jdolecek 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: # 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:
1.2 ! jdolecek 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:
1.1 jdolecek 46: BEGIN {
47: # top of source tree, used to find major number list in kernel
48: # sources
49: top = ENVIRON["NETBSDSRCDIR"]
50: if (!top)
51: top = ".."
52: top = top "/sys/"
53: if (system("test -d '" top "'") != 0) {
54: print "ERROR: didn't find top of kernel tree ('" top "' not a directory)" > "/dev/stderr"
55: exit 1
56: }
57:
58: machine = ENVIRON["MACHINE"]
59: if (!machine)
60: machine = "i386" # XXX for testing
61: maarch = ENVIRON["MACHINE_ARCH"]
62:
63: # file with major definitions
64: majors[0] = "conf/majors"
65: if (maarch == "arm32")
66: majors[1] = "arch/arm/conf/majors.arm32";
67: else if (machine == "evbsh5") {
68: majors[1] = "arch/evbsh5/conf/majors.evbsh5";
69: majors[2] = "arch/sh5/conf/majors.sh5";
70: } else
71: majors[1] = "arch/" machine "/conf/majors." machine;
72:
73: # process all files with majors and fill the chr[] and blk[]
74: # arrays, used in template processing
75: for(m in majors) {
76: file = top majors[m]
77: while (getline < file) {
78: if ($1 == "device-major") {
79: if ($3 == "char") {
80: chr[$2] = $4
81: if ($5 == "block")
82: blk[$2] = $6
83: } else if ($3 == "block")
84: blk[$2] = $4
85: }
86: }
87: }
88:
1.2 ! jdolecek 89: # read MD config file, and determine disk partitions
! 90: # and MD device list
! 91: cfgfile = "etc." machine "/MAKEDEV.conf"
! 92: MDDEV = 0 # MD device targets
! 93: MKDISK = "" # routine to create disk devices
! 94: while (getline < cfgfile) {
! 95: if ($1 ~ "^DISKPARTITIONS=") {
! 96: sub(".*=[ \t]*", "")
! 97: MKDISK = "makedisk_p" $0
! 98: } else if (MDDEV) {
! 99: if (MDDEV == 1)
! 100: MDDEV = $0
! 101: else
! 102: MDDEV = MDDEV "\n" $0
! 103: } else if ($1 ~ "^MD_DEVICES=")
! 104: MDDEV = 1
! 105: }
! 106:
1.1 jdolecek 107: # initially no substitutions
108: devsubst = 0
109: deventry = ""
110: }
111:
112: /%MI_DEVICES_BEGIN%/ {
113: devsubst = 1;
114: next
115: }
116:
117: /%MI_DEVICES_END%/ {
118: devsubst = 0;
119: next
120: }
121:
122: {
1.2 ! jdolecek 123: sub("^%MD_DEVICES%", MDDEV)
! 124: sub("%MKDISK%", MKDISK)
! 125:
1.1 jdolecek 126: # if device substitutions are not active, do nothing more
127: if (!devsubst) {
128: print
129: next
130: }
131: }
132:
133: # first line of device entry
134: /^[a-z].*\)$/ {
135: if (length(deventry) > 0) {
136: # We have a previous entry to print. Replace all known
137: # character and block devices. If no unknown character
138: # or block device definition remains within the entry,
139: # print it to output, otherwise scrap it.
140: for(c in chr)
141: gsub("%" c "_chr%", chr[c], deventry)
142: for(b in blk)
143: gsub("%" b "_blk%", blk[b], deventry)
144:
145: if (deventry !~ "%[a-z]*_chr%" && deventry !~ "%[a-z]*_blk%")
146: print deventry
147: }
148: deventry = $0
149: next
150: }
151:
152: # template line within device substitution section - just keep appending
153: # to the current entry
154: {
155: deventry = deventry "\n" $0
156: }
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