mkheaders.c revision 110895 
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 110895 2003-02-15 02:26:13Z ru $";
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 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	int errors;
65
66	errors = 0;
67	STAILQ_FOREACH(fl, &ftab, f_next) {
68		if (fl->f_needs != 0) {
69			match = 0;
70			STAILQ_FOREACH(dp, &dtab, d_next) {
71				if (eq(dp->d_name, fl->f_needs)) {
72					match++;
73					dp->d_done |= DEVDONE;
74				}
75			}
76			if (fl->f_flags & NEED_COUNT)
77				errors += do_header(fl->f_needs, match);
78		}
79	}
80	STAILQ_FOREACH(dp, &dtab, d_next) {
81		if (!(dp->d_done & DEVDONE)) {
82			warnx("Error: device \"%s\" is unknown",
83			       dp->d_name);
84			       errors++;
85			}
86		if (dp->d_count == UNKNOWN)
87			continue;
88		match = 0;
89		STAILQ_FOREACH(fl, &ftab, f_next) {
90			if (fl->f_needs == 0)
91				continue;
92			if ((fl->f_flags & NEED_COUNT) == 0)
93				continue;
94			if (eq(dp->d_name, fl->f_needs)) {
95				match++;
96				break;
97			}
98		}
99		if (match == 0) {
100			warnx("Error: device \"%s\" does not take a count",
101			    dp->d_name);
102			errors++;
103		}
104	}
105	if (errors)
106		errx(1, "%d errors", errors);
107}
108
109static int
110do_header(char *dev, int match)
111{
112	char *file, *name, *inw;
113	struct file_list *fl, *tflp;
114	struct file_list_head fl_head;
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	hicount = count = 0;
128	STAILQ_FOREACH(dp, &dtab, d_next) {
129		if (eq(dp->d_name, dev)) {
130			if (dp->d_count == UNKNOWN) {
131				warnx("Device \"%s\" requires a count", dev);
132				return 1;
133			}
134			count = dp->d_count;
135			break;
136		}
137	}
138	file = toheader(dev);
139	name = tomacro(dev);
140	if (match)
141		printf("FYI: static unit limits for %s are set: %s=%d\n", dev, name, count);
142	remember(file);
143	inf = fopen(file, "r");
144	oldcount = -1;
145	if (inf == 0) {
146		outf = fopen(file, "w");
147		if (outf == 0)
148			err(1, "%s", file);
149		fprintf(outf, "#define %s %d\n", name, count);
150		(void) fclose(outf);
151		return 0;
152	}
153	STAILQ_INIT(&fl_head);
154	for (;;) {
155		char *cp;
156		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
157			break;
158		if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
159			break;
160		inw = ns(inw);
161		cp = get_word(inf);
162		if (cp == 0 || cp == (char *)EOF)
163			break;
164		inc = atoi(cp);
165		if (eq(inw, name)) {
166			oldcount = inc;
167			inc = count;
168		}
169		cp = get_word(inf);
170		if (cp == (char *)EOF)
171			break;
172		fl = (struct file_list *) malloc(sizeof *fl);
173		bzero(fl, sizeof(*fl));
174		fl->f_fn = inw;		/* malloced */
175		fl->f_type = inc;
176		STAILQ_INSERT_HEAD(&fl_head, fl, f_next);
177	}
178	(void) fclose(inf);
179	if (count == oldcount) {
180		for (fl = STAILQ_FIRST(&fl_head); fl != NULL; fl = tflp) {
181			tflp = STAILQ_NEXT(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		STAILQ_INSERT_HEAD(&fl_head, fl, f_next);
193	}
194	outf = fopen(file, "w");
195	if (outf == 0)
196		err(1, "%s", file);
197	for (fl = STAILQ_FIRST(&fl_head); fl != NULL; fl = tflp) {
198		fprintf(outf,
199		    "#define %s %u\n", fl->f_fn, count ? fl->f_type : 0);
200		tflp = STAILQ_NEXT(fl, f_next);
201		free(fl->f_fn);
202		free(fl);
203	}
204	(void) fclose(outf);
205	return 0;
206}
207
208/*
209 * convert a dev name to a .h file name
210 */
211static char *
212toheader(char *dev)
213{
214	static char hbuf[MAXPATHLEN];
215
216	snprintf(hbuf, sizeof(hbuf), "%s.h", path(dev));
217	return (hbuf);
218}
219
220/*
221 * convert a dev name to a macro name
222 */
223static char *
224tomacro(char *dev)
225{
226	static char mbuf[20];
227	char *cp;
228
229	cp = mbuf;
230	*cp++ = 'N';
231	while (*dev)
232		*cp++ = islower(*dev) ? toupper(*dev++) : *dev++;
233	*cp++ = 0;
234	return (mbuf);
235}
236