aboutsummaryrefslogtreecommitdiff
path: root/usr.sbin/config/mkoptions.cc
diff options
context:
space:
mode:
Diffstat (limited to 'usr.sbin/config/mkoptions.cc')
-rw-r--r--usr.sbin/config/mkoptions.cc460
1 files changed, 460 insertions, 0 deletions
diff --git a/usr.sbin/config/mkoptions.cc b/usr.sbin/config/mkoptions.cc
new file mode 100644
index 000000000000..3b5ed17e455c
--- /dev/null
+++ b/usr.sbin/config/mkoptions.cc
@@ -0,0 +1,460 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1995 Peter Wemm
+ * Copyright (c) 1980, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Make all the .h files for the optional entries
+ */
+
+#include <ctype.h>
+#include <err.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include "config.h"
+#include "y.tab.h"
+
+static struct users {
+ int u_default;
+ int u_min;
+ int u_max;
+} users = { 8, 2, 512 };
+
+static char *lower(char *);
+static void read_options(void);
+static void do_option(char *);
+static char *tooption(char *);
+
+void
+options(void)
+{
+ char buf[40];
+ struct cputype *cp;
+ struct opt_list *ol;
+ struct opt *op;
+
+ /* Fake the cpu types as options. */
+ SLIST_FOREACH(cp, &cputype, cpu_next) {
+ op = (struct opt *)calloc(1, sizeof(*op));
+ if (op == NULL)
+ err(EXIT_FAILURE, "calloc");
+ op->op_name = ns(cp->cpu_name);
+ SLIST_INSERT_HEAD(&opt, op, op_next);
+ }
+
+ if (maxusers == 0) {
+ if (verbose)
+ fprintf(stderr,
+ "maxusers not specified; will auto-size\n");
+ } else if (maxusers < users.u_min) {
+ fprintf(stderr, "minimum of %d maxusers assumed\n",
+ users.u_min);
+ maxusers = users.u_min;
+ } else if (maxusers > users.u_max)
+ fprintf(stderr, "warning: maxusers > %d (%d)\n",
+ users.u_max, maxusers);
+
+ /* Fake MAXUSERS as an option. */
+ op = (struct opt *)calloc(1, sizeof(*op));
+ if (op == NULL)
+ err(EXIT_FAILURE, "calloc");
+ op->op_name = ns("MAXUSERS");
+ snprintf(buf, sizeof(buf), "%d", maxusers);
+ op->op_value = ns(buf);
+ SLIST_INSERT_HEAD(&opt, op, op_next);
+
+ read_options();
+
+ /* Fake the value of MACHINE_ARCH as an option if necessary */
+ SLIST_FOREACH(ol, &otab, o_next) {
+ if (strcasecmp(ol->o_name, machinearch) != 0)
+ continue;
+
+ op = (struct opt *)calloc(1, sizeof(*op));
+ if (op == NULL)
+ err(EXIT_FAILURE, "calloc");
+ op->op_name = ns(ol->o_name);
+ SLIST_INSERT_HEAD(&opt, op, op_next);
+ break;
+ }
+
+ SLIST_FOREACH(op, &opt, op_next) {
+ SLIST_FOREACH(ol, &otab, o_next) {
+ if (eq(op->op_name, ol->o_name) &&
+ (ol->o_flags & OL_ALIAS)) {
+ fprintf(stderr, "Mapping option %s to %s.\n",
+ op->op_name, ol->o_file);
+ op->op_name = ol->o_file;
+ break;
+ }
+ }
+ }
+ SLIST_FOREACH(ol, &otab, o_next)
+ do_option(ol->o_name);
+ SLIST_FOREACH(op, &opt, op_next) {
+ if (!op->op_ownfile && strncmp(op->op_name, "DEV_", 4)) {
+ fprintf(stderr, "%s: unknown option \"%s\"\n",
+ PREFIX, op->op_name);
+ exit(1);
+ }
+ }
+}
+
+/*
+ * Generate an <options>.h file
+ */
+
+static void
+do_option(char *name)
+{
+ char *file;
+ const char *basefile;
+ struct opt_list *ol;
+ struct opt *op;
+ struct opt_head op_head;
+ FILE *inf, *outf;
+ char *value;
+ char *oldvalue;
+ int seen;
+ int tidy;
+
+ file = tooption(name);
+ /*
+ * Check to see if the option was specified..
+ */
+ value = NULL;
+ SLIST_FOREACH(op, &opt, op_next) {
+ if (eq(name, op->op_name)) {
+ oldvalue = value;
+ value = op->op_value;
+ if (value == NULL)
+ value = ns("1");
+ if (oldvalue != NULL && !eq(value, oldvalue))
+ fprintf(stderr,
+ "%s: option \"%s\" redefined from %s to %s\n",
+ PREFIX, op->op_name, oldvalue,
+ value);
+ op->op_ownfile++;
+ }
+ }
+
+ remember(file);
+ inf = fopen(file, "r");
+ if (inf == NULL) {
+ outf = fopen(file, "w");
+ if (outf == NULL)
+ err(1, "%s", file);
+
+ /* was the option in the config file? */
+ if (value) {
+ fprintf(outf, "#define %s %s\n", name, value);
+ } /* else empty file */
+
+ (void)fclose(outf);
+ return;
+ }
+ basefile = "";
+ SLIST_FOREACH(ol, &otab, o_next)
+ if (eq(name, ol->o_name)) {
+ basefile = ol->o_file;
+ break;
+ }
+ oldvalue = NULL;
+ SLIST_INIT(&op_head);
+ seen = 0;
+ tidy = 0;
+ for (;;) {
+ configword cp, inw;
+ char *invalue;
+
+ /* get the #define */
+ if ((inw = get_word(inf)).eol() || inw.eof())
+ break;
+ /* get the option name */
+ if ((inw = get_word(inf)).eol() || inw.eof())
+ break;
+ /* get the option value */
+ if ((cp = get_word(inf)).eol() || cp.eof())
+ break;
+ /* option value */
+ invalue = ns(cp); /* malloced */
+ if (eq(inw, name)) {
+ oldvalue = invalue;
+ invalue = value;
+ seen++;
+ }
+ SLIST_FOREACH(ol, &otab, o_next)
+ if (eq(inw, ol->o_name))
+ break;
+ if (!eq(inw, name) && !ol) {
+ fprintf(stderr,
+ "WARNING: unknown option `%s' removed from %s\n",
+ inw->c_str(), file);
+ tidy++;
+ } else if (ol != NULL && !eq(basefile, ol->o_file)) {
+ fprintf(stderr,
+ "WARNING: option `%s' moved from %s to %s\n",
+ inw->c_str(), basefile, ol->o_file);
+ tidy++;
+ } else {
+ op = (struct opt *) calloc(1, sizeof *op);
+ if (op == NULL)
+ err(EXIT_FAILURE, "calloc");
+ op->op_name = ns(inw);
+ op->op_value = invalue;
+ SLIST_INSERT_HEAD(&op_head, op, op_next);
+ }
+
+ /* EOL? */
+ cp = get_word(inf);
+ if (cp.eof())
+ break;
+ }
+ (void)fclose(inf);
+ if (!tidy && ((value == NULL && oldvalue == NULL) ||
+ (value && oldvalue && eq(value, oldvalue)))) {
+ while (!SLIST_EMPTY(&op_head)) {
+ op = SLIST_FIRST(&op_head);
+ SLIST_REMOVE_HEAD(&op_head, op_next);
+ free(op->op_name);
+ free(op->op_value);
+ free(op);
+ }
+ return;
+ }
+
+ if (value && !seen) {
+ /* New option appears */
+ op = (struct opt *) calloc(1, sizeof *op);
+ if (op == NULL)
+ err(EXIT_FAILURE, "calloc");
+ op->op_name = ns(name);
+ op->op_value = ns(value);
+ SLIST_INSERT_HEAD(&op_head, op, op_next);
+ }
+
+ outf = fopen(file, "w");
+ if (outf == NULL)
+ err(1, "%s", file);
+ while (!SLIST_EMPTY(&op_head)) {
+ op = SLIST_FIRST(&op_head);
+ /* was the option in the config file? */
+ if (op->op_value) {
+ fprintf(outf, "#define %s %s\n",
+ op->op_name, op->op_value);
+ }
+ SLIST_REMOVE_HEAD(&op_head, op_next);
+ free(op->op_name);
+ free(op->op_value);
+ free(op);
+ }
+ (void)fclose(outf);
+}
+
+/*
+ * Find the filename to store the option spec into.
+ */
+static char *
+tooption(char *name)
+{
+ static char hbuf[MAXPATHLEN];
+ char nbuf[MAXPATHLEN];
+ struct opt_list *po;
+ char *fpath;
+
+ /* "cannot happen"? the otab list should be complete.. */
+ (void)strlcpy(nbuf, "options.h", sizeof(nbuf));
+
+ SLIST_FOREACH(po, &otab, o_next) {
+ if (eq(po->o_name, name)) {
+ strlcpy(nbuf, po->o_file, sizeof(nbuf));
+ break;
+ }
+ }
+
+ fpath = path(nbuf);
+ (void)strlcpy(hbuf, fpath, sizeof(hbuf));
+ free(fpath);
+ return (hbuf);
+}
+
+
+static void
+check_duplicate(const char *fname, const char *chkopt)
+{
+ struct opt_list *po;
+
+ SLIST_FOREACH(po, &otab, o_next) {
+ if (eq(po->o_name, chkopt)) {
+ fprintf(stderr, "%s: Duplicate option %s.\n",
+ fname, chkopt);
+ exit(1);
+ }
+ }
+}
+
+static void
+insert_option(const char *fname, char *optname, char *val)
+{
+ struct opt_list *po;
+
+ check_duplicate(fname, optname);
+ po = (struct opt_list *) calloc(1, sizeof *po);
+ if (po == NULL)
+ err(EXIT_FAILURE, "calloc");
+ po->o_name = optname;
+ po->o_file = val;
+ po->o_flags = 0;
+ SLIST_INSERT_HEAD(&otab, po, o_next);
+}
+
+static void
+update_option(const char *optname, char *val, int flags)
+{
+ struct opt_list *po;
+
+ SLIST_FOREACH(po, &otab, o_next) {
+ if (eq(po->o_name, optname)) {
+ free(po->o_file);
+ po->o_file = val;
+ po->o_flags = flags;
+ return;
+ }
+ }
+ /*
+ * Option not found, but that's OK, we just ignore it since it
+ * may be for another arch.
+ */
+ return;
+}
+
+static int
+read_option_file(const char *fname, int flags)
+{
+ FILE *fp;
+ configword wd;
+ char *optname, *val;
+ char genopt[MAXPATHLEN];
+
+ fp = fopen(fname, "r");
+ if (fp == NULL) {
+ if (verbose) {
+ getcwd(genopt, sizeof(genopt));
+ fprintf(stderr, "Unable to open options file: %s\n",
+ fname);
+ fprintf(stderr, "CWD: %s\n", genopt);
+ }
+ return (0);
+ }
+ while (!(wd = get_word(fp)).eof()) {
+ if (wd.eol())
+ continue;
+ if (wd[0] == '#') {
+ while (!(wd = get_word(fp)).eof() && !wd.eol())
+ continue;
+ continue;
+ }
+ optname = ns(wd);
+ wd = get_word(fp);
+ if (wd.eof()) {
+ free(optname);
+ break;
+ }
+ if (wd.eol()) {
+ if (flags) {
+ fprintf(stderr, "%s: compat file requires two"
+ " words per line at %s\n", fname, optname);
+ exit(1);
+ }
+ char *s = ns(optname);
+ (void)snprintf(genopt, sizeof(genopt), "opt_%s.h",
+ lower(s));
+ val = ns(genopt);
+ free(s);
+ } else {
+ val = ns(wd);
+ }
+
+ if (flags == 0) {
+ /*
+ * insert_option takes possession of `optname` in the
+ * new option instead of making yet another copy.
+ */
+ insert_option(fname, optname, val);
+ } else {
+ update_option(optname, val, flags);
+ free(optname);
+ optname = NULL;
+ }
+ }
+ (void)fclose(fp);
+ return (1);
+}
+
+/*
+ * read the options and options.<machine> files
+ */
+static void
+read_options(void)
+{
+ char fname[MAXPATHLEN];
+ struct files_name *nl, *tnl;
+
+ SLIST_INIT(&otab);
+ read_option_file("../../conf/options", 0);
+ (void)snprintf(fname, sizeof fname, "../../conf/options.%s",
+ machinename);
+ if (!read_option_file(fname, 0)) {
+ (void)snprintf(fname, sizeof fname, "options.%s", machinename);
+ read_option_file(fname, 0);
+ }
+ for (nl = STAILQ_FIRST(&optfntab); nl != NULL; nl = tnl) {
+ read_option_file(nl->f_name, 0);
+ tnl = STAILQ_NEXT(nl, f_next);
+ free(nl->f_name);
+ free(nl);
+ }
+ read_option_file("../../conf/options-compat", OL_ALIAS);
+}
+
+static char *
+lower(char *str)
+{
+ char *cp = str;
+
+ while (*str) {
+ if (isupper(*str))
+ *str = tolower(*str);
+ str++;
+ }
+ return (cp);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-30 19:15:34 +0000