mkheaders.c revision 100463 
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 100463 2002-07-21 23:02:35Z 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 int do_header(char *, int);
55static void nocount(char *);
56static char *toheader(char *);
57static char *tomacro(char *);
58
59void
60headers(void)
61{
62	struct file_list *fl;
63	struct device *dp;
64	int match;
65	int errors;
66
67	errors = 0;
68	for (fl = ftab; fl != 0; fl = fl->f_next) {
69		if (fl->f_needs != 0) {
70			match = 0;
71			for (dp = dtab; dp != 0; dp = dp->d_next) {
72				if (eq(dp->d_name, fl->f_needs)) {
73					match++;
74					dp->d_done |= DEVDONE;
75				}
76			}
77			if (fl->f_flags & NEED_COUNT)
78				errors += do_header(fl->f_needs, match);
79		}
80	}
81	for (dp = dtab; dp != 0; dp = dp->d_next) {
82		if (!(dp->d_done & DEVDONE)) {
83			warnx("Error: device \"%s\" is unknown",
84			       dp->d_name);
85			       errors++;
86			}
87		if (dp->d_count == UNKNOWN)
88			continue;
89		match = 0;
90		for (fl = ftab; fl != 0; fl = fl->f_next) {
91			if (fl->f_needs == 0)
92				continue;
93			if ((fl->f_flags & NEED_COUNT) == 0)
94				continue;
95			if (eq(dp->d_name, fl->f_needs)) {
96				match++;
97				break;
98			}
99		}
100		if (match == 0) {
101			warnx("Error: device \"%s\" does not take a count",
102			    dp->d_name);
103			errors++;
104		}
105	}
106	if (errors)
107		errx(1, "%d errors", errors);
108}
109
110static int
111do_header(char *dev, int match)
112{
113	char *file, *name, *inw;
114	struct file_list *fl, *fl_head, *tflp;
115	struct device *dp;
116	FILE *inf, *outf;
117	int inc, oldcount;
118	int count, hicount;
119	int errors;
120
121	/*
122	 * After this loop, "count" will be the actual number of units,
123	 * and "hicount" will be the highest unit declared.  do_header()
124	 * must use this higher of these values.
125	 */
126	errors = 0;
127	for (hicount = count = 0, dp = dtab; dp != 0; dp = dp->d_next) {
128		if (eq(dp->d_name, dev)) {
129			if (dp->d_count == UNKNOWN) {
130				warnx("Device \"%s\" requires a count", dev);
131				return 1;
132			}
133			count = dp->d_count;
134			break;
135		}
136	}
137	file = toheader(dev);
138	name = tomacro(dev);
139	if (match)
140		printf("FYI: static unit limits for %s are set: %s=%d\n", dev, name, count);
141	remember(file);
142	inf = fopen(file, "r");
143	oldcount = -1;
144	if (inf == 0) {
145		outf = fopen(file, "w");
146		if (outf == 0)
147			err(1, "%s", file);
148		fprintf(outf, "#define %s %d\n", name, count);
149		(void) fclose(outf);
150		return 0;
151	}
152	fl_head = NULL;
153	for (;;) {
154		char *cp;
155		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
156			break;
157		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
158			break;
159		inw = ns(inw);
160		cp = get_word(inf);
161		if (cp == 0 || cp == (char *)EOF)
162			break;
163		inc = atoi(cp);
164		if (eq(inw, name)) {
165			oldcount = inc;
166			inc = count;
167		}
168		cp = get_word(inf);
169		if (cp == (char *)EOF)
170			break;
171		fl = (struct file_list *) malloc(sizeof *fl);
172		bzero(fl, sizeof(*fl));
173		fl->f_fn = inw;		/* malloced */
174		fl->f_type = inc;
175		fl->f_next = fl_head;
176		fl_head = fl;
177	}
178	(void) fclose(inf);
179	if (count == oldcount) {
180		for (fl = fl_head; fl != NULL; fl = tflp) {
181			tflp = fl->f_next;
182			free(fl->f_fn);
183			free(fl);
184		}
185		return 0;
186	}
187	if (oldcount == -1) {
188		fl = (struct file_list *) malloc(sizeof *fl);
189		bzero(fl, sizeof(*fl));
190		fl->f_fn = ns(name);
191		fl->f_type = count;
192		fl->f_next = fl_head;
193		fl_head = fl;
194	}
195	outf = fopen(file, "w");
196	if (outf == 0)
197		err(1, "%s", file);
198	for (fl = fl_head; fl != NULL; fl = tflp) {
199		fprintf(outf,
200		    "#define %s %u\n", fl->f_fn, count ? fl->f_type : 0);
201		tflp = fl->f_next;
202		free(fl->f_fn);
203		free(fl);
204	}
205	(void) fclose(outf);
206	return 0;
207}
208
209/*
210 * convert a dev name to a .h file name
211 */
212static char *
213toheader(char *dev)
214{
215	static char hbuf[MAXPATHLEN];
216
217	snprintf(hbuf, sizeof(hbuf), "%s.h", path(dev));
218	return (hbuf);
219}
220
221/*
222 * convert a dev name to a macro name
223 */
224static char *
225tomacro(char *dev)
226{
227	static char mbuf[20];
228	char *cp;
229
230	cp = mbuf;
231	*cp++ = 'N';
232	while (*dev)
233		*cp++ = islower(*dev) ? toupper(*dev++) : *dev++;
234	*cp++ = 0;
235	return (mbuf);
236}
237