NetBSD/usr.sbin/config/mkdevsw.c

240 lines
6.5 KiB
C

/* $NetBSD: mkdevsw.c,v 1.5 2004/06/20 22:20:17 jmc Exp $ */
/*
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by MAEKAWA Masahide (gehenna@NetBSD.org).
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "defs.h"
static int emitconv(FILE *);
static int emitdev(FILE *);
static int emitdevm(FILE *);
static int emitheader(FILE *);
int
mkdevsw(void)
{
FILE *fp;
if ((fp = fopen("devsw.c.tmp", "w")) == NULL) {
(void)fprintf(stderr, "config: cannot write devsw.c: %s\n",
strerror(errno));
return (1);
}
if (emitheader(fp) || emitdevm(fp) || emitconv(fp) || emitdev(fp)) {
(void)fprintf(stderr, "config: error writing devsw.c: %s\n",
strerror(errno));
(void)fclose(fp);
return (1);
}
(void)fclose(fp);
if (moveifchanged("devsw.c.tmp", "devsw.c") != 0) {
(void)fprintf(stderr, "config: error renaming devsw.c: %s\n",
strerror(errno));
return (1);
}
return (0);
}
static int
emitheader(FILE *fp)
{
if (fprintf(fp, "/*\n * MACHINE GENERATED: DO NOT EDIT\n *\n"
" * devsw.c, from \"%s\"\n */\n\n", conffile) < 0) {
return (1);
}
if (fputs("#include <sys/param.h>\n"
"#include <sys/conf.h>\n"
"\n#define\tDEVSW_ARRAY_SIZE(x)\t"
"(sizeof((x))/sizeof((x)[0]))\n", fp) < 0) {
return (1);
}
return (0);
}
/*
* Emit device switch table for character/block device.
*/
static int
emitdevm(FILE *fp)
{
struct devm *dm;
char mstr[16];
int i;
if (fputs("\n/* device switch table for block device */\n", fp) < 0)
return (1);
for (i = 0 ; i <= maxbdevm ; i++) {
(void)snprintf(mstr, sizeof(mstr), "%d", i);
if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL)
continue;
if (fprintf(fp, "extern const struct bdevsw %s_bdevsw;\n",
dm->dm_name) < 0)
return (1);
}
if (fputs("\nconst struct bdevsw *bdevsw0[] = {\n", fp) < 0)
return (1);
for (i = 0 ; i <= maxbdevm ; i++) {
(void)snprintf(mstr, sizeof(mstr), "%d", i);
if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL) {
if (fprintf(fp, "\tNULL,\n") < 0)
return (1);
} else {
if (fprintf(fp, "\t&%s_bdevsw,\n", dm->dm_name) < 0)
return (1);
}
}
if (fputs("};\n\nconst struct bdevsw **bdevsw = bdevsw0;\n", fp) < 0)
return (1);
if (fputs("const int sys_bdevsws = DEVSW_ARRAY_SIZE(bdevsw0);\n"
"int max_bdevsws = DEVSW_ARRAY_SIZE(bdevsw0);\n", fp) < 0)
return (1);
if (fputs("\n/* device switch table for character device */\n", fp) < 0)
return (1);
for (i = 0 ; i <= maxcdevm ; i++) {
(void)snprintf(mstr, sizeof(mstr), "%d", i);
if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL)
continue;
if (fprintf(fp, "extern const struct cdevsw %s_cdevsw;\n",
dm->dm_name) < 0)
return (1);
}
if (fputs("\nconst struct cdevsw *cdevsw0[] = {\n", fp) < 0)
return (1);
for (i = 0 ; i <= maxcdevm ; i++) {
(void)snprintf(mstr, sizeof(mstr), "%d", i);
if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL) {
if (fprintf(fp, "\tNULL,\n") < 0)
return (1);
} else {
if (fprintf(fp, "\t&%s_cdevsw,\n", dm->dm_name) < 0)
return (1);
}
}
if (fputs("};\n\nconst struct cdevsw **cdevsw = cdevsw0;\n", fp) < 0)
return (1);
if (fputs("const int sys_cdevsws = DEVSW_ARRAY_SIZE(cdevsw0);\n"
"int max_cdevsws = DEVSW_ARRAY_SIZE(cdevsw0);\n", fp) < 0)
return (1);
return (0);
}
/*
* Emit device major conversion table.
*/
static int
emitconv(FILE *fp)
{
struct devm *dm;
if (fputs("\n/* device conversion table */\n"
"struct devsw_conv devsw_conv0[] = {\n", fp) < 0)
return (-1);
TAILQ_FOREACH(dm, &alldevms, dm_next) {
if (fprintf(fp, "\t{ \"%s\", %d, %d },\n", dm->dm_name,
dm->dm_bmajor, dm->dm_cmajor) < 0)
return (1);
}
if (fputs("};\n\n"
"struct devsw_conv *devsw_conv = devsw_conv0;\n"
"int max_devsw_convs = DEVSW_ARRAY_SIZE(devsw_conv0);\n",
fp) < 0)
return (1);
return (0);
}
/*
* Emit specific device major informations.
*/
static int
emitdev(FILE *fp)
{
struct devm *dm;
char mstr[16];
if (fputs("\n", fp) < 0)
return (1);
(void)strlcpy(mstr, "swap", sizeof(mstr));
if ((dm = ht_lookup(bdevmtab, intern(mstr))) == NULL)
panic("swap device is not configured");
if (fprintf(fp, "const dev_t swapdev = makedev(%d, 0);\n",
dm->dm_bmajor) < 0)
return (1);
(void)strlcpy(mstr, "mem", sizeof(mstr));
if ((dm = ht_lookup(cdevmtab, intern(mstr))) == NULL)
panic("memory device is not configured");
if (fprintf(fp, "const dev_t zerodev = makedev(%d, DEV_ZERO);\n",
dm->dm_cmajor) < 0)
return (1);
if (fputs("\n/* mem_no is only used in iskmemdev() */\n", fp) < 0)
return (1);
if (fprintf(fp, "const int mem_no = %d;\n", dm->dm_cmajor) < 0)
return (1);
return (0);
}