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/* $OpenBSD: mkswap.c,v 1.16 2016/10/16 17:50:00 tb Exp $ */ |
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/* $NetBSD: mkswap.c,v 1.5 1996/08/31 20:58:27 mycroft 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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#include <sys/param.h> /* NODEV */ |
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#include <err.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 "config.h" |
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#include "sem.h" |
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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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for (cf = allcf; cf != NULL; cf = cf->cf_next) |
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if (cf->cf_root != NULL && mkoneswap(cf)) |
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return (1); |
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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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char fname[200], *mountroot; |
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struct nvlist *nv; |
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FILE *fp; |
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(void)snprintf(fname, sizeof fname, "swap%s.c", cf->cf_name); |
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if ((fp = fopen(fname, "w")) == NULL) { |
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warn("cannot write %s", fname); |
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return (1); |
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} |
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if (fputs("\ |
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#include <sys/param.h>\n\ |
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#include <sys/conf.h>\n\ |
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#include <sys/systm.h>\n\n", fp) < 0) |
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goto wrerror; |
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nv = cf->cf_root; |
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if (fprintf(fp, "dev_t\trootdev = %s;\t/* %s */\n", |
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mkdevstr(nv->nv_int), nv->nv_str) < 0) |
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goto wrerror; |
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nv = cf->cf_dump; |
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if (fprintf(fp, "dev_t\tdumpdev = %s;\t/* %s */\n", |
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mkdevstr(nv->nv_int), nv->nv_str) < 0) |
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goto wrerror; |
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if (fputs("\nstruct\tswdevt swdevt[] = {\n", fp) < 0) |
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goto wrerror; |
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for (nv = cf->cf_swap; nv != NULL; nv = nv->nv_next) |
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if (fprintf(fp, "\t{ %s,\t0 },\t/* %s */\n", |
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mkdevstr(nv->nv_int), nv->nv_str) < 0) |
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goto wrerror; |
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if (fputs("\t{ NODEV, 0 }\n};\n\n", fp) < 0) |
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goto wrerror; |
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mountroot = |
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cf->cf_root->nv_str == s_nfs ? "nfs_mountroot" : "dk_mountroot"; |
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if (fprintf(fp, "int (*mountroot)(void) = %s;\n", mountroot) < 0) |
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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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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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/* (void)unlink(fname); */ |
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return (1); |
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} |