From 7b23fbe29a3f7eb6b7670a1855890790afbbfb96 Mon Sep 17 00:00:00 2001 From: leo Date: Fri, 22 Mar 2002 21:27:58 +0000 Subject: [PATCH] Add code for reading NetBSD disklabels. --- sys/arch/atari/stand/tostools/libtos/Makefile | 8 +- .../atari/stand/tostools/libtos/ahdilbl.h | 5 +- .../atari/stand/tostools/libtos/bsdlabel.c | 95 ++++++++++++ .../atari/stand/tostools/libtos/disklbl.h | 140 ++++++++++++++++++ 4 files changed, 243 insertions(+), 5 deletions(-) create mode 100644 sys/arch/atari/stand/tostools/libtos/bsdlabel.c create mode 100644 sys/arch/atari/stand/tostools/libtos/disklbl.h diff --git a/sys/arch/atari/stand/tostools/libtos/Makefile b/sys/arch/atari/stand/tostools/libtos/Makefile index 70a702642505..14621ad7926f 100644 --- a/sys/arch/atari/stand/tostools/libtos/Makefile +++ b/sys/arch/atari/stand/tostools/libtos/Makefile @@ -1,11 +1,11 @@ -# $NetBSD: Makefile,v 1.4 2002/02/24 20:51:07 leo Exp $ +# $NetBSD: Makefile,v 1.5 2002/03/22 21:27:58 leo Exp $ # LIB = libtos.a -OBJS = biosrw.o ahdi.o aout.o bsdstart.o cread.o diskio.o elf.o eprintf.o \ - error.o sysinfo.o xalloc.o xexit.o keywait.o +OBJS = biosrw.o ahdi.o aout.o bsdlabel.o bsdstart.o cread.o diskio.o elf.o \ + eprintf.o error.o sysinfo.o xalloc.o xexit.o keywait.o -HEADERS = ahdilbl.h diskio.h kparamb.h libtos.h +HEADERS = ahdilbl.h disklbl.h diskio.h kparamb.h libtos.h include ../Makefile.inc diff --git a/sys/arch/atari/stand/tostools/libtos/ahdilbl.h b/sys/arch/atari/stand/tostools/libtos/ahdilbl.h index 748d1000f7cb..0edca7be9af2 100644 --- a/sys/arch/atari/stand/tostools/libtos/ahdilbl.h +++ b/sys/arch/atari/stand/tostools/libtos/ahdilbl.h @@ -1,4 +1,4 @@ -/* $NetBSD: ahdilbl.h,v 1.1 2002/02/24 20:51:07 leo Exp $ */ +/* $NetBSD: ahdilbl.h,v 1.2 2002/03/22 21:27:59 leo Exp $ */ /* * Copyright (c) 1995 Leo Weppelman. @@ -135,4 +135,7 @@ typedef struct { } ptable_t; EXTERN u_int ahdi_getparts PROTO((disk_t *, ptable_t *, u_int, u_int)); + +struct disklabel; +EXTERN int bsd_getlabel PROTO((disk_t *, struct disklabel *, u_int)); #endif /* AHDILABEL_H */ diff --git a/sys/arch/atari/stand/tostools/libtos/bsdlabel.c b/sys/arch/atari/stand/tostools/libtos/bsdlabel.c new file mode 100644 index 000000000000..5d16bf99be59 --- /dev/null +++ b/sys/arch/atari/stand/tostools/libtos/bsdlabel.c @@ -0,0 +1,95 @@ +/* $NetBSD: bsdlabel.c,v 1.1 2002/03/22 21:27:59 leo Exp $ */ + +/* + * Copyright (c) 1995 Waldi Ravens. + * All rights reserved. + * + * 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 Waldi Ravens. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + */ + +#include +#include +#include +#include +#include "libtos.h" +#include "diskio.h" +#include "ahdilbl.h" +#include "disklbl.h" + +static int dkcksum PROTO((struct disklabel *)); + +int +bsd_getlabel(dd, dlp, offset) + disk_t *dd; + struct disklabel *dlp; + u_int offset; +{ + u_char *bblk; + u_int nsec; + int rv; + + nsec = (BBMINSIZE + (dd->bsize - 1)) / dd->bsize; + bblk = disk_read(dd, offset, nsec); + if (bblk) { + u_int *end, *p; + + end = (u_int *)&bblk[BBMINSIZE - sizeof(struct disklabel)]; + rv = 1; + for (p = (u_int *)bblk; p < end; ++p) { + struct disklabel *dl = (struct disklabel *)&p[1]; + if ( ( (p[0] == NBDAMAGIC && offset == 0) + || (p[0] == AHDIMAGIC && offset != 0) + || (u_char *)dl - bblk == 7168 + ) + && dl->d_npartitions <= MAXPARTITIONS + && dl->d_magic2 == DISKMAGIC + && dl->d_magic == DISKMAGIC + && dkcksum(dl) == 0 + ) { + bcopy(dl, dlp, sizeof(*dlp)); + rv = 0; + break; + } + } + free(bblk); + } + else rv = -1; + + return(rv); +} + +static int +dkcksum(dl) + struct disklabel *dl; +{ + u_short *start, *end, sum = 0; + + start = (u_short *)dl; + end = (u_short *)&dl->d_partitions[dl->d_npartitions]; + while (start < end) + sum ^= *start++; + return(sum); +} diff --git a/sys/arch/atari/stand/tostools/libtos/disklbl.h b/sys/arch/atari/stand/tostools/libtos/disklbl.h new file mode 100644 index 000000000000..76d80f0f448b --- /dev/null +++ b/sys/arch/atari/stand/tostools/libtos/disklbl.h @@ -0,0 +1,140 @@ +/* $NetBSD: disklbl.h,v 1.1 2002/03/22 21:27:59 leo Exp $ */ + +/* + * Copyright (c) 1987, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * 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 University of + * California, Berkeley and its contributors. + * 4. 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. + * + * @(#)disklabel.h 8.2 (Berkeley) 7/10/94 + */ + +#ifndef DISKLABEL_H +#define DISKLABEL_H + +#define DISKMAGIC ((u_int32_t)0x82564557) /* The disk magic number */ + +struct disklabel { + u_int32_t d_magic; /* the magic number */ + u_int16_t d_type; /* drive type */ + u_int16_t d_subtype; /* controller/d_type specific */ + char d_typename[16]; /* type name, e.g. "eagle" */ + + /* + * d_packname contains the pack identifier and is returned when + * the disklabel is read off the disk or in-core copy. + * d_boot0 and d_boot1 are the (optional) names of the + * primary (block 0) and secondary (block 1-15) bootstraps + * as found in /usr/mdec. These are returned when using + * getdiskbyname(3) to retrieve the values from /etc/disktab. + */ + union { + char un_d_packname[16]; /* pack identifier */ + struct { + char *un_d_boot0; /* primary bootstrap name */ + char *un_d_boot1; /* secondary bootstrap name */ + } un_b; + } d_un; +#define d_packname d_un.un_d_packname +#define d_boot0 d_un.un_b.un_d_boot0 +#define d_boot1 d_un.un_b.un_d_boot1 + + /* disk geometry: */ + u_int32_t d_secsize; /* # of bytes per sector */ + u_int32_t d_nsectors; /* # of data sectors per track */ + u_int32_t d_ntracks; /* # of tracks per cylinder */ + u_int32_t d_ncylinders; /* # of data cylinders per unit */ + u_int32_t d_secpercyl; /* # of data sectors per cylinder */ + u_int32_t d_secperunit; /* # of data sectors per unit */ + + /* + * Spares (bad sector replacements) below are not counted in + * d_nsectors or d_secpercyl. Spare sectors are assumed to + * be physical sectors which occupy space at the end of each + * track and/or cylinder. + */ + u_int16_t d_sparespertrack; /* # of spare sectors per track */ + u_int16_t d_sparespercyl; /* # of spare sectors per cylinder */ + /* + * Alternate cylinders include maintenance, replacement, configuration + * description areas, etc. + */ + u_int32_t d_acylinders; /* # of alt. cylinders per unit */ + + /* hardware characteristics: */ + /* + * d_interleave, d_trackskew and d_cylskew describe perturbations + * in the media format used to compensate for a slow controller. + * Interleave is physical sector interleave, set up by the + * formatter or controller when formatting. When interleaving is + * in use, logically adjacent sectors are not physically + * contiguous, but instead are separated by some number of + * sectors. It is specified as the ratio of physical sectors + * traversed per logical sector. Thus an interleave of 1:1 + * implies contiguous layout, while 2:1 implies that logical + * sector 0 is separated by one sector from logical sector 1. + * d_trackskew is the offset of sector 0 on track N relative to + * sector 0 on track N-1 on the same cylinder. Finally, d_cylskew + * is the offset of sector 0 on cylinder N relative to sector 0 + * on cylinder N-1. + */ + u_int16_t d_rpm; /* rotational speed */ + u_int16_t d_interleave; /* hardware sector interleave */ + u_int16_t d_trackskew; /* sector 0 skew, per track */ + u_int16_t d_cylskew; /* sector 0 skew, per cylinder */ + u_int32_t d_headswitch; /* head switch time, usec */ + u_int32_t d_trkseek; /* track-to-track seek, usec */ + u_int32_t d_flags; /* generic flags */ +#define NDDATA 5 + u_int32_t d_drivedata[NDDATA]; /* drive-type specific information */ +#define NSPARE 5 + u_int32_t d_spare[NSPARE]; /* reserved for future use */ + u_int32_t d_magic2; /* the magic number (again) */ + u_int16_t d_checksum; /* xor of data incl. partitions */ + + /* filesystem and partition information: */ + u_int16_t d_npartitions; /* number of partitions in following */ + u_int32_t d_bbsize; /* size of boot area at sn0, bytes */ + u_int32_t d_sbsize; /* max size of fs superblock, bytes */ + struct partition { /* the partition table */ + u_int32_t p_size; /* number of sectors in partition */ + u_int32_t p_offset; /* starting sector */ + u_int32_t p_fsize; /* filesystem basic fragment size */ + u_int8_t p_fstype; /* filesystem type, see below */ + u_int8_t p_frag; /* filesystem fragments per block */ + union { + u_int16_t cpg; /* UFS: FS cylinders per group */ + u_int16_t sgs; /* LFS: FS segment shift */ + } __partition_u1; +#define p_cpg __partition_u1.cpg +#define p_sgs __partition_u1.sgs + } d_partitions[MAXPARTITIONS]; /* actually may be more */ +}; + +#endif /* DISKLABEL_H */