Return to mkswap.c CVS log

Up to [local] / src / usr.sbin / config

remove sys/param.h includes by stopping use of NODEV, ALIGNED and ALIGN().
The latter two exposed a large block allocator on top of malloc() which
doesn't really make sense in this decade (the objects are never freed, so
not quite like the famous openssl allocator)
ok millert jsg

/*	$OpenBSD: mkswap.c,v 1.19 2021/11/28 19:26:03 deraadt Exp $	*/
/*	$NetBSD: mkswap.c,v 1.5 1996/08/31 20:58:27 mycroft Exp $	*/

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Lawrence Berkeley Laboratories.
 *
 * 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.
 *
 *	from: @(#)mkswap.c	8.1 (Berkeley) 6/6/93
 */

#include <sys/types.h>

#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "config.h"
#include "sem.h"

dev_t nodev = (dev_t)-1;

static int mkoneswap(struct config *);

/*
 * Make the various swap*.c files.  Nothing to do for generic swap.
 */
int
mkswap(void)
{
	struct config *cf;

	for (cf = allcf; cf != NULL; cf = cf->cf_next)
		if (cf->cf_root != NULL && mkoneswap(cf))
			return (1);
	return (0);
}

static char *
mkdevstr(dev_t d)
{
	static char buf[32];

	if (d == nodev)
		(void)snprintf(buf, sizeof buf, "NODEV");
	else
		(void)snprintf(buf, sizeof buf, "makedev(%u, %u)",
		    major(d), minor(d));
	return buf;
}

static int
mkoneswap(struct config *cf)
{
	char fname[200], *mountroot;
	struct nvlist *nv;
	FILE *fp;

	(void)snprintf(fname, sizeof fname, "swap%s.c", cf->cf_name);
	if ((fp = fopen(fname, "w")) == NULL) {
		warn("cannot write %s", fname);
		return (1);
	}
	if (fputs("\
#include <sys/param.h>\n\
#include <sys/conf.h>\n\
#include <sys/systm.h>\n\n", fp) == EOF)
		goto wrerror;
	nv = cf->cf_root;
	if (fprintf(fp, "dev_t\trootdev = %s;\t/* %s */\n",
	    mkdevstr(nv->nv_int), nv->nv_str) < 0)
		goto wrerror;
	nv = cf->cf_dump;
	if (fprintf(fp, "dev_t\tdumpdev = %s;\t/* %s */\n",
	    mkdevstr(nv->nv_int), nv->nv_str) < 0)
		goto wrerror;
	if (fputs("\nstruct\tswdevt swdevt[] = {\n", fp) == EOF)
		goto wrerror;
	for (nv = cf->cf_swap; nv != NULL; nv = nv->nv_next)
		if (fprintf(fp, "\t{ %s,\t0 },\t/* %s */\n",
		    mkdevstr(nv->nv_int), nv->nv_str) < 0)
			goto wrerror;
	if (fputs("\t{ NODEV, 0 }\n};\n\n", fp) == EOF)
		goto wrerror;
	mountroot =
	    cf->cf_root->nv_str == s_nfs ? "nfs_mountroot" : "dk_mountroot";
	if (fprintf(fp, "int (*mountroot)(void) = %s;\n", mountroot) < 0)
		goto wrerror;

	if (fclose(fp)) {
		fp = NULL;
		goto wrerror;
	}
	return (0);
wrerror:
	warn("error writing %s", fname);
	if (fp != NULL)
		(void)fclose(fp);
	/* (void)unlink(fname); */
	return (1);
}