mkheaders.c revision 71878 
1/*
2 * Copyright (c) 1980, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static char sccsid[] = "@(#)mkheaders.c	8.1 (Berkeley) 6/6/93";
37#endif
38static const char rcsid[] =
39  "$FreeBSD: head/usr.sbin/config/mkheaders.c 71878 2001-01-31 10:06:06Z peter $";
40#endif /* not lint */
41
42/*
43 * Make all the .h files for the optional entries
44 */
45
46#include <ctype.h>
47#include <err.h>
48#include <stdio.h>
49#include <string.h>
50#include <sys/param.h>
51#include "config.h"
52#include "y.tab.h"
53
54static void do_header(char *, int);
55static char *toheader(char *);
56static char *tomacro(char *);
57
58void
59headers(void)
60{
61	struct file_list *fl;
62	struct device *dp;
63	int match;
64
65	for (fl = ftab; fl != 0; fl = fl->f_next) {
66		if (fl->f_needs != 0) {
67			match = 0;
68			for (dp = dtab; dp != 0; dp = dp->d_next) {
69				if (eq(dp->d_name, fl->f_needs)) {
70					match++;
71					if ((dp->d_type & TYPEMASK) == DEVICE)
72						dp->d_type |= DEVDONE;
73				}
74			}
75			if (fl->f_flags & NEED_COUNT)
76				do_header(fl->f_needs, match);
77		}
78	}
79	for (dp = dtab; dp != 0; dp = dp->d_next) {
80		if ((dp->d_type & TYPEMASK) == DEVICE) {
81			if (!(dp->d_type & DEVDONE))
82				errx(1, "Error: device \"%s\" is unknown",
83				       dp->d_name);
84		}
85	}
86}
87
88static void
89do_header(char *dev, int match)
90{
91	char *file, *name, *inw;
92	struct file_list *fl, *fl_head, *tflp;
93	struct device *dp;
94	FILE *inf, *outf;
95	int inc, oldcount;
96	int count, hicount;
97
98	/*
99	 * After this loop, "count" will be the actual number of units,
100	 * and "hicount" will be the highest unit declared.  do_header()
101	 * must use this higher of these values.
102	 */
103	for (hicount = count = 0, dp = dtab; dp != 0; dp = dp->d_next) {
104		if (eq(dp->d_name, dev)) {
105			count =
106			    dp->d_count != UNKNOWN ? dp->d_count : 1;
107			break;
108		}
109	}
110	file = toheader(dev);
111	name = tomacro(dev);
112	if (match)
113		printf("Note: static unit limits for %s are set (%s = %d)\n", dev, name, count);
114	remember(file);
115	inf = fopen(file, "r");
116	oldcount = -1;
117	if (inf == 0) {
118		outf = fopen(file, "w");
119		if (outf == 0)
120			err(1, "%s", file);
121		fprintf(outf, "#define %s %d\n", name, count);
122		(void) fclose(outf);
123		return;
124	}
125	fl_head = NULL;
126	for (;;) {
127		char *cp;
128		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
129			break;
130		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
131			break;
132		inw = ns(inw);
133		cp = get_word(inf);
134		if (cp == 0 || cp == (char *)EOF)
135			break;
136		inc = atoi(cp);
137		if (eq(inw, name)) {
138			oldcount = inc;
139			inc = count;
140		}
141		cp = get_word(inf);
142		if (cp == (char *)EOF)
143			break;
144		fl = (struct file_list *) malloc(sizeof *fl);
145		bzero(fl, sizeof(*fl));
146		fl->f_fn = inw;		/* malloced */
147		fl->f_type = inc;
148		fl->f_next = fl_head;
149		fl_head = fl;
150	}
151	(void) fclose(inf);
152	if (count == oldcount) {
153		for (fl = fl_head; fl != NULL; fl = tflp) {
154			tflp = fl->f_next;
155			free(fl->f_fn);
156			free(fl);
157		}
158		return;
159	}
160	if (oldcount == -1) {
161		fl = (struct file_list *) malloc(sizeof *fl);
162		bzero(fl, sizeof(*fl));
163		fl->f_fn = ns(name);
164		fl->f_type = count;
165		fl->f_next = fl_head;
166		fl_head = fl;
167	}
168	outf = fopen(file, "w");
169	if (outf == 0)
170		err(1, "%s", file);
171	for (fl = fl_head; fl != NULL; fl = tflp) {
172		fprintf(outf,
173		    "#define %s %u\n", fl->f_fn, count ? fl->f_type : 0);
174		tflp = fl->f_next;
175		free(fl->f_fn);
176		free(fl);
177	}
178	(void) fclose(outf);
179}
180
181/*
182 * convert a dev name to a .h file name
183 */
184static char *
185toheader(char *dev)
186{
187	static char hbuf[MAXPATHLEN];
188
189	snprintf(hbuf, sizeof(hbuf), "%s.h", path(dev));
190	return (hbuf);
191}
192
193/*
194 * convert a dev name to a macro name
195 */
196static char *
197tomacro(char *dev)
198{
199	static char mbuf[20];
200	char *cp;
201
202	cp = mbuf;
203	*cp++ = 'N';
204	while (*dev)
205		*cp++ = islower(*dev) ? toupper(*dev++) : *dev++;
206	*cp++ = 0;
207	return (mbuf);
208}
209