faa913d76d
for your /usr/obj/path/to/my/files path to the kernel, then weird things happened. make buildkernel would fail because config was dumping core or generating bad file names (depending on the lenght of the path). While I was here, also use strlcpy, strlcat and snprintf (or asprintf) as necessary. Minor format policing for the snprintf calls as well.
392 lines
9.1 KiB
C
392 lines
9.1 KiB
C
/*
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* Copyright (c) 1995 Peter Wemm
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mkheaders.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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/*
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* Make all the .h files for the optional entries
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*/
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#include <ctype.h>
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#include <err.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/param.h>
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#include "config.h"
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#include "y.tab.h"
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static struct users {
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int u_default;
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int u_min;
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int u_max;
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} users[] = {
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{ 8, 2, 512 }, /* MACHINE_I386 */
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{ 8, 2, 512 }, /* MACHINE_PC98 */
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{ 8, 2, 512 }, /* MACHINE_ALPHA */
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{ 8, 2, 512 }, /* MACHINE_IA64 */
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};
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#define NUSERS (sizeof (users) / sizeof (users[0]))
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static char *lower(char *);
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static void read_options(void);
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static void do_option(char *);
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static char *tooption(char *);
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void
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options(void)
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{
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char buf[40];
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struct cputype *cp;
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struct opt_list *ol;
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struct opt *op;
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struct users *up;
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/* Fake the cpu types as options. */
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for (cp = cputype; cp != NULL; cp = cp->cpu_next) {
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op = (struct opt *)malloc(sizeof(*op));
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memset(op, 0, sizeof(*op));
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op->op_name = ns(cp->cpu_name);
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op->op_next = opt;
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opt = op;
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}
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/* Initialize `maxusers'. */
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if ((unsigned)machine > NUSERS) {
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printf("maxusers config info isn't present, using i386\n");
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up = &users[MACHINE_I386 - 1];
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} else
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up = &users[machine - 1];
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if (maxusers == 0) {
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printf("maxusers not specified; %d assumed\n", up->u_default);
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maxusers = up->u_default;
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} else if (maxusers < up->u_min) {
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printf("minimum of %d maxusers assumed\n", up->u_min);
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maxusers = up->u_min;
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} else if (maxusers > up->u_max)
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printf("warning: maxusers > %d (%d)\n", up->u_max, maxusers);
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/* Fake MAXUSERS as an option. */
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op = (struct opt *)malloc(sizeof(*op));
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memset(op, 0, sizeof(*op));
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op->op_name = "MAXUSERS";
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snprintf(buf, sizeof(buf), "%d", maxusers);
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op->op_value = ns(buf);
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op->op_next = opt;
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opt = op;
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read_options();
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for (ol = otab; ol != 0; ol = ol->o_next)
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do_option(ol->o_name);
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for (op = opt; op; op = op->op_next) {
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if (!op->op_ownfile) {
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printf("%s:%d: unknown option \"%s\"\n",
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PREFIX, op->op_line, op->op_name);
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exit(1);
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}
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}
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}
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/*
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* Generate an <options>.h file
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*/
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static void
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do_option(char *name)
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{
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char *basefile, *file, *inw;
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struct opt_list *ol;
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struct opt *op, *op_head, *topp;
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FILE *inf, *outf;
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char *value;
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char *oldvalue;
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int seen;
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int tidy;
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file = tooption(name);
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/*
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* Check to see if the option was specified..
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*/
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value = NULL;
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for (op = opt; op; op = op->op_next) {
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if (eq(name, op->op_name)) {
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oldvalue = value;
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value = op->op_value;
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if (value == NULL)
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value = ns("1");
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if (oldvalue != NULL && !eq(value, oldvalue))
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printf(
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"%s:%d: option \"%s\" redefined from %s to %s\n",
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PREFIX, op->op_line, op->op_name, oldvalue,
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value);
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op->op_ownfile++;
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}
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}
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inf = fopen(file, "r");
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if (inf == 0) {
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outf = fopen(file, "w");
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if (outf == 0)
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err(1, "%s", file);
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/* was the option in the config file? */
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if (value) {
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fprintf(outf, "#define %s %s\n", name, value);
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} /* else empty file */
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(void) fclose(outf);
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return;
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}
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basefile = "";
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for (ol = otab; ol != 0; ol = ol->o_next)
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if (eq(name, ol->o_name)) {
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basefile = ol->o_file;
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break;
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}
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oldvalue = NULL;
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op_head = NULL;
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seen = 0;
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tidy = 0;
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for (;;) {
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char *cp;
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char *invalue;
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/* get the #define */
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if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
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break;
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/* get the option name */
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if ((inw = get_word(inf)) == 0 || inw == (char *)EOF)
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break;
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inw = ns(inw);
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/* get the option value */
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if ((cp = get_word(inf)) == 0 || cp == (char *)EOF)
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break;
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/* option value */
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invalue = ns(cp); /* malloced */
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if (eq(inw, name)) {
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oldvalue = invalue;
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invalue = value;
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seen++;
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}
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for (ol = otab; ol != 0; ol = ol->o_next)
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if (eq(inw, ol->o_name))
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break;
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if (!eq(inw, name) && !ol) {
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printf("WARNING: unknown option `%s' removed from %s\n",
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inw, file);
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tidy++;
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} else if (ol != NULL && !eq(basefile, ol->o_file)) {
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printf("WARNING: option `%s' moved from %s to %s\n",
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inw, basefile, ol->o_file);
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tidy++;
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} else {
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op = (struct opt *) malloc(sizeof *op);
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bzero(op, sizeof(*op));
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op->op_name = inw;
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op->op_value = invalue;
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op->op_next = op_head;
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op_head = op;
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}
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/* EOL? */
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cp = get_word(inf);
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if (cp == (char *)EOF)
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break;
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}
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(void) fclose(inf);
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if (!tidy && ((value == NULL && oldvalue == NULL) ||
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(value && oldvalue && eq(value, oldvalue)))) {
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for (op = op_head; op != NULL; op = topp) {
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topp = op->op_next;
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free(op->op_name);
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free(op->op_value);
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free(op);
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}
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return;
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}
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if (value && !seen) {
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/* New option appears */
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op = (struct opt *) malloc(sizeof *op);
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bzero(op, sizeof(*op));
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op->op_name = ns(name);
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op->op_value = value ? ns(value) : NULL;
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op->op_next = op_head;
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op_head = op;
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}
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outf = fopen(file, "w");
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if (outf == 0)
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err(1, "%s", file);
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for (op = op_head; op != NULL; op = topp) {
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/* was the option in the config file? */
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if (op->op_value) {
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fprintf(outf, "#define %s %s\n",
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op->op_name, op->op_value);
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}
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topp = op->op_next;
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free(op->op_name);
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free(op->op_value);
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free(op);
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}
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(void) fclose(outf);
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}
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/*
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* Find the filename to store the option spec into.
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*/
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static char *
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tooption(char *name)
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{
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static char hbuf[MAXPATHLEN];
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char nbuf[MAXPATHLEN];
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struct opt_list *po;
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/* "cannot happen"? the otab list should be complete.. */
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(void) strlcpy(nbuf, "options.h", sizeof(nbuf));
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for (po = otab ; po != 0; po = po->o_next) {
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if (eq(po->o_name, name)) {
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strlcpy(nbuf, po->o_file, sizeof(nbuf));
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break;
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}
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}
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(void) strlcpy(hbuf, path(nbuf), sizeof(hbuf));
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return (hbuf);
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}
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/*
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* read the options and options.<machine> files
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*/
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static void
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read_options(void)
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{
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FILE *fp;
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char fname[MAXPATHLEN];
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char *wd, *this, *val;
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struct opt_list *po;
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int first = 1;
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char genopt[MAXPATHLEN];
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otab = 0;
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if (ident == NULL) {
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printf("no ident line specified\n");
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exit(1);
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}
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(void) snprintf(fname, sizeof(fname), "../../conf/options");
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openit:
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fp = fopen(fname, "r");
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if (fp == 0) {
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return;
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}
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next:
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wd = get_word(fp);
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if (wd == (char *)EOF) {
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(void) fclose(fp);
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if (first == 1) {
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first++;
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(void) snprintf(fname, sizeof fname, "../../conf/options.%s", machinename);
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fp = fopen(fname, "r");
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if (fp != 0)
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goto next;
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(void) snprintf(fname, sizeof fname, "options.%s", machinename);
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goto openit;
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}
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if (first == 2) {
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first++;
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(void) snprintf(fname, sizeof fname, "options.%s", raisestr(ident));
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fp = fopen(fname, "r");
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if (fp != 0)
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goto next;
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}
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return;
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}
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if (wd == 0)
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goto next;
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if (wd[0] == '#')
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{
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while (((wd = get_word(fp)) != (char *)EOF) && wd)
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;
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goto next;
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}
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this = ns(wd);
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val = get_word(fp);
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if (val == (char *)EOF)
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return;
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if (val == 0) {
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char *s = ns(this);
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(void) snprintf(genopt, sizeof(genopt), "opt_%s.h", lower(s));
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val = genopt;
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free(s);
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}
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val = ns(val);
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for (po = otab ; po != 0; po = po->o_next) {
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if (eq(po->o_name, this)) {
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printf("%s: Duplicate option %s.\n",
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fname, this);
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exit(1);
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}
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}
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po = (struct opt_list *) malloc(sizeof *po);
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bzero(po, sizeof(*po));
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po->o_name = this;
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po->o_file = val;
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po->o_next = otab;
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otab = po;
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goto next;
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}
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static char *
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lower(char *str)
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{
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char *cp = str;
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while (*str) {
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if (isupper(*str))
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*str = tolower(*str);
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str++;
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}
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return (cp);
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}
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