d767912be3
devmajor_t/devminor_t, as proposed on tech-kern. This avoids 64-bit arithmetics and 64-bit printf formats in parts of the kernel where it is not really useful, and helps clarity.
162 lines
4.4 KiB
C
162 lines
4.4 KiB
C
/* $NetBSD: mkswap.c,v 1.7 2009/01/20 18:20:48 drochner Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* 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, Lawrence Berkeley Laboratories.
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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. 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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* from: @(#)mkswap.c 8.1 (Berkeley) 6/6/93
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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 <sys/param.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <err.h>
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#include "defs.h"
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#include "sem.h"
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static char *mkdevstr(dev_t);
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static int mkoneswap(struct config *);
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/*
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* Make the various swap*.c files. Nothing to do for generic swap.
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*/
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int
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mkswap(void)
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{
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struct config *cf;
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TAILQ_FOREACH(cf, &allcf, cf_next) {
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if (mkoneswap(cf))
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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 char *
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mkdevstr(dev_t d)
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{
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static char buf[32];
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if (d == NODEV)
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(void)snprintf(buf, sizeof(buf), "NODEV");
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else
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(void)snprintf(buf, sizeof(buf), "makedev(%d, %d)",
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major(d), minor(d));
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return buf;
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}
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static int
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mkoneswap(struct config *cf)
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{
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struct nvlist *nv;
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FILE *fp;
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char fname[200], tname[200];
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char specinfo[200];
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(void)snprintf(fname, sizeof(fname), "swap%s.c", cf->cf_name);
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(void)snprintf(tname, sizeof(tname), "swap%s.c.tmp", cf->cf_name);
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if ((fp = fopen(tname, "w")) == NULL) {
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warn("cannot open %s", fname);
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return (1);
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}
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autogen_comment(fp, fname);
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fputs("#include <sys/param.h>\n"
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"#include <sys/conf.h>\n\n", fp);
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/*
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* Emit the root device.
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*/
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nv = cf->cf_root;
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if (cf->cf_root->nv_str == s_qmark)
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strlcpy(specinfo, "NULL", sizeof(specinfo));
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else
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snprintf(specinfo, sizeof(specinfo), "\"%s\"",
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cf->cf_root->nv_str);
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fprintf(fp, "const char *rootspec = %s;\n", specinfo);
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fprintf(fp, "dev_t\trootdev = %s;\t/* %s */\n\n",
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mkdevstr(nv->nv_num),
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nv->nv_str == s_qmark ? "wildcarded" : nv->nv_str);
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/*
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* Emit the dump device.
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*/
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nv = cf->cf_dump;
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if (cf->cf_dump == NULL)
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strlcpy(specinfo, "NULL", sizeof(specinfo));
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else
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snprintf(specinfo, sizeof(specinfo), "\"%s\"", cf->cf_dump->nv_str);
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fprintf(fp, "const char *dumpspec = %s;\n", specinfo);
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fprintf(fp, "dev_t\tdumpdev = %s;\t/* %s */\n\n",
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nv ? mkdevstr(nv->nv_num) : "NODEV",
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nv ? nv->nv_str : "unspecified");
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/*
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* Emit the root file system.
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*/
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fprintf(fp, "const char *rootfstype = \"%s\";\n",
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cf->cf_fstype ? cf->cf_fstype : "?");
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fflush(fp);
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if (ferror(fp))
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goto wrerror;
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if (fclose(fp)) {
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fp = NULL;
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goto wrerror;
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}
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if (moveifchanged(tname, fname) != 0) {
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warn("error renaming %s", fname);
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return (1);
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}
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return (0);
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wrerror:
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warn("error writing %s", fname);
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if (fp != NULL)
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(void)fclose(fp);
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#if 0
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(void)unlink(fname);
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#endif
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return (1);
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}
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