f14fb60209
* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
239 lines
6.4 KiB
C
239 lines
6.4 KiB
C
/* $NetBSD: disklabel.c,v 1.37 2012/06/25 22:32:43 abs Exp $ */
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/*
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* Copyright (c) 1983, 1987, 1993
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* The Regents of the University of California. All rights reserved.
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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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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)disklabel.c 8.2 (Berkeley) 5/3/95";
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#else
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__RCSID("$NetBSD: disklabel.c,v 1.37 2012/06/25 22:32:43 abs Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <sys/param.h>
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#define DKTYPENAMES
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#define FSTYPENAMES
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#if HAVE_NBTOOL_CONFIG_H
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#include <nbinclude/sys/disklabel.h>
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#include <nbinclude/disktab.h>
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#else
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#include <sys/disklabel.h>
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#include <disktab.h>
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#endif /* HAVE_NBTOOL_CONFIG_H */
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.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 <unistd.h>
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#ifdef __weak_alias
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__weak_alias(getdiskbyname,_getdiskbyname)
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#endif
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#if 0
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static void error(int);
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#endif
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static int gettype(char *, const char *const *);
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static const char *db_array[2] = { _PATH_DISKTAB, 0 };
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int
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setdisktab(const char *name)
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{
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if (!name || !*name)
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return -1;
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db_array[0] = name;
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return 0;
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}
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struct disklabel *
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getdiskbyname(const char *name)
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{
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static struct disklabel disk;
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struct disklabel *dp = &disk;
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struct partition *pp;
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char *buf;
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char *cp, *cq; /* can't be */
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char p, max, psize[3], pbsize[3],
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pfsize[3], poffset[3], ptype[3];
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u_int32_t *dx;
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long f;
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_DIAGASSERT(name != NULL);
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if (cgetent(&buf, db_array, name) < 0)
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return NULL;
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memset(&disk, 0, sizeof(disk));
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/*
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* typename
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*/
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cq = dp->d_typename;
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cp = buf;
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while (cq < dp->d_typename + sizeof(dp->d_typename) - 1 &&
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(*cq = *cp) && *cq != '|' && *cq != ':')
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cq++, cp++;
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*cq = '\0';
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/*
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* boot name (optional) xxboot, bootxx
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*/
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cgetstr(buf, "b0", &dp->d_boot0);
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cgetstr(buf, "b1", &dp->d_boot1);
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if (cgetstr(buf, "ty", &cq) >= 0) {
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if (strcmp(cq, "removable") == 0)
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dp->d_flags |= D_REMOVABLE;
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else if (strcmp(cq, "simulated") == 0)
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dp->d_flags |= D_RAMDISK;
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free(cq);
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}
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if (cgetcap(buf, "sf", ':') != NULL)
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dp->d_flags |= D_BADSECT;
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#define getnumdflt(field, dname, dflt) \
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(field) = ((cgetnum(buf, dname, &f) == -1) ? (dflt) : (u_int32_t) f)
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#define getnum(field, dname) \
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if (cgetnum(buf, dname, &f) != -1) field = (u_int32_t)f
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getnumdflt(dp->d_secsize, "se", DEV_BSIZE);
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getnum(dp->d_ntracks, "nt");
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getnum(dp->d_nsectors, "ns");
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getnum(dp->d_ncylinders, "nc");
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if (cgetstr(buf, "dt", &cq) >= 0) {
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dp->d_type = gettype(cq, dktypenames);
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free(cq);
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} else
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getnumdflt(dp->d_type, "dt", 0);
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getnumdflt(dp->d_secpercyl, "sc", dp->d_nsectors * dp->d_ntracks);
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getnumdflt(dp->d_secperunit, "su", dp->d_secpercyl * dp->d_ncylinders);
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getnumdflt(dp->d_rpm, "rm", 3600);
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getnumdflt(dp->d_interleave, "il", 1);
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getnumdflt(dp->d_trackskew, "sk", 0);
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getnumdflt(dp->d_cylskew, "cs", 0);
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getnumdflt(dp->d_headswitch, "hs", 0);
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getnumdflt(dp->d_trkseek, "ts", 0);
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getnumdflt(dp->d_bbsize, "bs", BBSIZE);
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getnumdflt(dp->d_sbsize, "sb", SBLOCKSIZE);
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strcpy(psize, "px"); /* XXX: strcpy is safe */
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strcpy(pbsize, "bx"); /* XXX: strcpy is safe */
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strcpy(pfsize, "fx"); /* XXX: strcpy is safe */
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strcpy(poffset, "ox"); /* XXX: strcpy is safe */
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strcpy(ptype, "tx"); /* XXX: strcpy is safe */
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max = 'a' - 1;
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pp = &dp->d_partitions[0];
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for (p = 'a'; p < 'a' + MAXPARTITIONS; p++, pp++) {
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long ff;
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psize[1] = pbsize[1] = pfsize[1] = poffset[1] = ptype[1] = p;
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if (cgetnum(buf, psize, &ff) == -1)
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pp->p_size = 0;
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else {
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pp->p_size = (u_int32_t)ff;
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getnum(pp->p_offset, poffset);
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getnumdflt(pp->p_fsize, pfsize, 0);
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if (pp->p_fsize) {
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long bsize;
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if (cgetnum(buf, pbsize, &bsize) == -1)
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pp->p_frag = 8;
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else
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pp->p_frag =
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(u_int8_t)(bsize / pp->p_fsize);
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}
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getnumdflt(pp->p_fstype, ptype, 0);
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if (pp->p_fstype == 0)
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if (cgetstr(buf, ptype, &cq) >= 0) {
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pp->p_fstype = gettype(cq, fstypenames);
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free(cq);
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}
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max = p;
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}
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}
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dp->d_npartitions = max + 1 - 'a';
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strcpy(psize, "dx"); /* XXX: strcpy is safe */
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dx = dp->d_drivedata;
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for (p = '0'; p < '0' + NDDATA; p++, dx++) {
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psize[1] = p;
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getnumdflt(*dx, psize, 0);
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}
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dp->d_magic = DISKMAGIC;
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dp->d_magic2 = DISKMAGIC;
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free(buf);
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return (dp);
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}
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static int
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gettype(char *t, const char *const *names)
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{
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const char *const *nm;
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_DIAGASSERT(t != NULL);
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_DIAGASSERT(names != NULL);
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for (nm = names; *nm; nm++)
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if (strcasecmp(t, *nm) == 0)
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return (int)(nm - names);
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if (isdigit((unsigned char) *t))
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return (atoi(t));
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return (0);
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}
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#if 0
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static void
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error(err)
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int err;
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{
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char *p;
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(void)write(STDERR_FILENO, "disktab: ", 9);
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(void)write(STDERR_FILENO, _PATH_DISKTAB, sizeof(_PATH_DISKTAB) - 1);
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(void)write(STDERR_FILENO, ": ", 2);
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p = strerror(err);
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(void)write(STDERR_FILENO, p, strlen(p));
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(void)write(STDERR_FILENO, "\n", 1);
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}
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#endif
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