240 lines
6.4 KiB
C
240 lines
6.4 KiB
C
/* $NetBSD: mkdevsw.c,v 1.2 2005/07/30 06:40:30 yamt Exp $ */
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/*
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by MAEKAWA Masahide (gehenna@NetBSD.org).
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include "defs.h"
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static int emitconv(FILE *);
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static int emitdev(FILE *);
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static int emitdevm(FILE *);
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static int emitheader(FILE *);
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int
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mkdevsw(void)
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{
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FILE *fp;
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if ((fp = fopen("devsw.c.tmp", "w")) == NULL) {
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(void)fprintf(stderr, "config: cannot write devsw.c: %s\n",
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strerror(errno));
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return (1);
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}
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if (emitheader(fp) || emitdevm(fp) || emitconv(fp) || emitdev(fp)) {
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(void)fprintf(stderr, "config: error writing devsw.c: %s\n",
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strerror(errno));
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(void)fclose(fp);
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return (1);
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}
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(void)fclose(fp);
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if (moveifchanged("devsw.c.tmp", "devsw.c") != 0) {
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(void)fprintf(stderr, "config: error renaming devsw.c: %s\n",
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strerror(errno));
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return (1);
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}
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return (0);
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}
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static int
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emitheader(FILE *fp)
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{
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if (fprintf(fp, "/*\n * MACHINE GENERATED: DO NOT EDIT\n *\n"
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" * devsw.c, from \"%s\"\n */\n\n", conffile) < 0) {
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return (1);
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}
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if (fputs("#include <sys/param.h>\n"
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"#include <sys/conf.h>\n"
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"\n#define\tDEVSW_ARRAY_SIZE(x)\t"
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"(sizeof((x))/sizeof((x)[0]))\n", fp) < 0) {
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return (1);
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}
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return (0);
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}
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/*
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* Emit device switch table for character/block device.
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*/
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static int
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emitdevm(FILE *fp)
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{
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struct devm *dm;
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char mstr[16];
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int i;
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if (fputs("\n/* device switch table for block device */\n", fp) < 0)
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return (1);
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for (i = 0 ; i <= maxbdevm ; i++) {
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(void)snprintf(mstr, sizeof(mstr), "%d", i);
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if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL)
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continue;
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if (fprintf(fp, "extern const struct bdevsw %s_bdevsw;\n",
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dm->dm_name) < 0)
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return (1);
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}
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if (fputs("\nconst struct bdevsw *bdevsw0[] = {\n", fp) < 0)
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return (1);
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for (i = 0 ; i <= maxbdevm ; i++) {
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(void)snprintf(mstr, sizeof(mstr), "%d", i);
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if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL) {
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if (fprintf(fp, "\tNULL,\n") < 0)
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return (1);
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} else {
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if (fprintf(fp, "\t&%s_bdevsw,\n", dm->dm_name) < 0)
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return (1);
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}
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}
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if (fputs("};\n\nconst struct bdevsw **bdevsw = bdevsw0;\n", fp) < 0)
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return (1);
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if (fputs("const int sys_bdevsws = DEVSW_ARRAY_SIZE(bdevsw0);\n"
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"int max_bdevsws = DEVSW_ARRAY_SIZE(bdevsw0);\n", fp) < 0)
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return (1);
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if (fputs("\n/* device switch table for character device */\n", fp) < 0)
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return (1);
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for (i = 0 ; i <= maxcdevm ; i++) {
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(void)snprintf(mstr, sizeof(mstr), "%d", i);
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if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL)
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continue;
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if (fprintf(fp, "extern const struct cdevsw %s_cdevsw;\n",
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dm->dm_name) < 0)
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return (1);
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}
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if (fputs("\nconst struct cdevsw *cdevsw0[] = {\n", fp) < 0)
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return (1);
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for (i = 0 ; i <= maxcdevm ; i++) {
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(void)snprintf(mstr, sizeof(mstr), "%d", i);
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if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL) {
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if (fprintf(fp, "\tNULL,\n") < 0)
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return (1);
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} else {
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if (fprintf(fp, "\t&%s_cdevsw,\n", dm->dm_name) < 0)
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return (1);
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}
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}
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if (fputs("};\n\nconst struct cdevsw **cdevsw = cdevsw0;\n", fp) < 0)
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return (1);
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if (fputs("const int sys_cdevsws = DEVSW_ARRAY_SIZE(cdevsw0);\n"
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"int max_cdevsws = DEVSW_ARRAY_SIZE(cdevsw0);\n", fp) < 0)
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return (1);
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return (0);
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}
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/*
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* Emit device major conversion table.
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*/
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static int
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emitconv(FILE *fp)
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{
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struct devm *dm;
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if (fputs("\n/* device conversion table */\n"
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"struct devsw_conv devsw_conv0[] = {\n", fp) < 0)
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return (-1);
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TAILQ_FOREACH(dm, &alldevms, dm_next) {
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if (fprintf(fp, "\t{ \"%s\", %d, %d },\n", dm->dm_name,
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dm->dm_bmajor, dm->dm_cmajor) < 0)
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return (1);
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}
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if (fputs("};\n\n"
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"struct devsw_conv *devsw_conv = devsw_conv0;\n"
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"int max_devsw_convs = DEVSW_ARRAY_SIZE(devsw_conv0);\n",
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fp) < 0)
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return (1);
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return (0);
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}
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/*
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* Emit specific device major informations.
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*/
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static int
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emitdev(FILE *fp)
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{
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struct devm *dm;
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char mstr[16];
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if (fputs("\n", fp) < 0)
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return (1);
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(void)strlcpy(mstr, "swap", sizeof(mstr));
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if ((dm = ht_lookup(bdevmtab, intern(mstr))) != NULL) {
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if (fprintf(fp, "const dev_t swapdev = makedev(%d, 0);\n",
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dm->dm_bmajor) < 0)
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return (1);
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}
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(void)strlcpy(mstr, "mem", sizeof(mstr));
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if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL)
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panic("memory device is not configured");
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if (fprintf(fp, "const dev_t zerodev = makedev(%d, DEV_ZERO);\n",
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dm->dm_cmajor) < 0)
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return (1);
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if (fputs("\n/* mem_no is only used in iskmemdev() */\n", fp) < 0)
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return (1);
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if (fprintf(fp, "const int mem_no = %d;\n", dm->dm_cmajor) < 0)
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return (1);
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return (0);
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}
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