Clean up Ultrix compatiblity code: redo Ultrix label reading code
to have the same interface as native readdisklabel(), call it cleanly from caller of readdisklabel(), and fix bug that left d_npartitions at 1 for ultrix-compat labels. Ultrix labels now actually work.
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jonathan
parent
68b7908bf9
commit
9c4be79d84
@ -1,4 +1,4 @@
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/* $NetBSD: rz.c,v 1.8 1994/12/08 18:33:19 dean Exp $ */
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/* $NetBSD: rz.c,v 1.9 1995/07/14 01:05:30 jonathan Exp $ */
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/*
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* Copyright (c) 1992, 1993
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@ -111,6 +111,21 @@ static struct size rzdefaultpart[MAXPARTITIONS] = {
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#endif
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};
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extern char *readdisklabel __P((dev_t dev, void (*strat)(),
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struct disklabel *lp, struct cpu_disklabel *osdep));
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/*
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* Ultrix disklabel declarations
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*/
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#ifdef COMPAT_ULTRIX
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#include "../../stand/dec_boot.h"
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extern char *
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compat_label __P((dev_t dev, void (*strat)(),
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struct disklabel *lp, struct cpu_disklabel *osdep));
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#endif
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#define RAWPART 2 /* 'c' partition */ /* XXX */
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struct rzstats {
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@ -714,9 +729,6 @@ rzdone(unit, error, resid, status)
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}
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}
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#ifdef COMPAT_ULTRIX
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#include "../../stand/dec_boot.h"
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#endif
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/*
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* Read or constuct a disklabel
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@ -731,7 +743,6 @@ rzgetinfo(dev)
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register int i;
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char *msg;
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int part;
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extern char *readdisklabel();
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struct cpu_disklabel cd;
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part = rzpart(dev);
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@ -771,8 +782,23 @@ rzgetinfo(dev)
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msg = readdisklabel(dev, rzstrategy, lp, &cd);
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if (msg == NULL)
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return;
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printf("rz%d: WARNING: %s\n", unit, msg);
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#ifdef COMPAT_ULTRIX
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/*
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* No native label, try and substitute Ultrix label
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*/
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msg = compat_label(dev, rzstrategy, lp, &cd);
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if (msg == NULL) {
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printf("rz%d: WARNING: using ULTRIX partition information",
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unit);
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return;
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}
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printf("rz%d: WARNING: Ultrix label, %s\n", unit, msg);
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#endif
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/*
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* No label found. Concoct one from compile-time default.
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*/
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lp->d_magic = DISKMAGIC;
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lp->d_magic2 = DISKMAGIC;
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lp->d_type = DTYPE_SCSI;
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@ -783,16 +809,11 @@ rzgetinfo(dev)
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lp->d_npartitions = MAXPARTITIONS;
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lp->d_bbsize = BBSIZE;
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lp->d_sbsize = SBSIZE;
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#ifdef COMPAT_ULTRIX
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if(sc->sc_label.d_magic != DEC_LABEL_MAGIC){
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#endif
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for (i = 0; i < MAXPARTITIONS; i++) {
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lp->d_partitions[i].p_size = rzdefaultpart[i].nblocks;
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lp->d_partitions[i].p_offset = rzdefaultpart[i].strtblk;
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}
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#ifdef COMPAT_ULTRIX
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}
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#endif
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lp->d_partitions[RAWPART].p_size = sc->sc_blks;
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}
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@ -829,7 +850,8 @@ rzopen(dev, flags, mode, p)
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printf("rzopen: ENXIO on rz%d%c unit %d part %d\n",
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unit, "abcdefg"[part], unit, part);
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printf("# partions %d, size of %d = %d\n",
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lp->d_npartitions, lp->d_partitions[part].p_size);
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lp->d_npartitions, part,
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lp->d_partitions[part].p_size);
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return (ENXIO);
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}
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@ -1,4 +1,4 @@
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/* $NetBSD: disksubr.c,v 1.4 1994/11/28 18:42:22 dean Exp $ */
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/* $NetBSD: disksubr.c,v 1.5 1995/07/14 01:05:22 jonathan Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1988 Regents of the University of California.
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@ -45,6 +45,11 @@
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#ifdef COMPAT_ULTRIX
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#include "../../stand/dec_boot.h"
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extern char *
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compat_label __P((dev_t dev, void (*strat)(),
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struct disklabel *lp, struct cpu_disklabel *osdep));
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#endif
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@ -65,9 +70,6 @@ readdisklabel(dev, strat, lp, osdep)
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{
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register struct buf *bp;
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struct disklabel *dlp;
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#ifdef COMPAT_ULTRIX
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Dec_DiskLabel *Dec_dlp;
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#endif
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char *msg = NULL;
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if (lp->d_secperunit == 0)
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@ -101,49 +103,84 @@ readdisklabel(dev, strat, lp, osdep)
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break;
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}
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}
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#ifdef COMPAT_ULTRIX /* look for ultrix disklabel
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gallatin@isds.duke.edu , 8/21/94 */
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if(msg){
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msg = NULL;
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bp->b_flags = B_INVAL | B_AGE;
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brelse(bp);
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return (msg);
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}
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#ifdef COMPAT_ULTRIX
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/*
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* Given a buffer bp, try and interpret it as an Ultrix disk label,
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* putting the partition info into a native NetBSD label
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*/
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char *
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compat_label(dev, strat, lp, osdep)
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dev_t dev;
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void (*strat)();
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register struct disklabel *lp;
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struct cpu_disklabel *osdep;
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{
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Dec_DiskLabel *dlp;
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struct buf *bp = NULL;
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char *msg = NULL;
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bp = geteblk((int)lp->d_secsize);
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bp->b_dev = dev;
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bp->b_blkno = DEC_LABEL_SECTOR;
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bp->b_bcount = lp->d_secsize;
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bp->b_flags = B_BUSY | B_READ;
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bp->b_cylin = DEC_LABEL_SECTOR / lp->d_secpercyl;
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(*strat)(bp);
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if (biowait(bp)) {
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msg = "I/O error";
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} else for (Dec_dlp = (Dec_DiskLabel *)bp->b_un.b_addr;
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Dec_dlp <= (Dec_DiskLabel *)(bp->b_un.b_addr+DEV_BSIZE-sizeof(*Dec_dlp));
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Dec_dlp = (Dec_DiskLabel *)((char *)Dec_dlp + sizeof(long))) {
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if (Dec_dlp->magic != DEC_LABEL_MAGIC) {
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printf("label: %x\n",Dec_dlp->magic);
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if (msg == NULL)
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msg = "no disk label";
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goto done;
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}
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else {
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int i;
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lp->d_magic=DEC_LABEL_MAGIC;
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for(i=0;i<((MAXPARTITIONS<DEC_NUM_DISK_PARTS) ?
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MAXPARTITIONS : DEC_NUM_DISK_PARTS); i++) {
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lp->d_partitions[i].p_size = Dec_dlp->map[i].numBlocks;
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lp->d_partitions[i].p_offset = Dec_dlp->map[i].startBlock;
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lp->d_partitions[i].p_fsize = 1024;
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if(i==1)
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lp->d_partitions[i].p_fstype=FS_SWAP;
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else
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lp->d_partitions[i].p_fstype=FS_BSDFFS;
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for (dlp = (Dec_DiskLabel *)bp->b_un.b_addr;
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dlp <= (Dec_DiskLabel *)(bp->b_un.b_addr+DEV_BSIZE-sizeof(*dlp));
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dlp = (Dec_DiskLabel *)((char *)dlp + sizeof(long))) {
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int part;
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if (dlp->magic != DEC_LABEL_MAGIC) {
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printf("label: %x\n",dlp->magic);
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msg = ((msg != NULL) ? msg: "no disk label");
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goto done;
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}
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/*XXX*/ printf("Ultrix label loop\n");
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lp->d_magic = DEC_LABEL_MAGIC;
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lp->d_npartitions = 0;
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for (part = 0;
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part <((MAXPARTITIONS<DEC_NUM_DISK_PARTS) ?
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MAXPARTITIONS : DEC_NUM_DISK_PARTS);
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part++) {
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lp->d_partitions[part].p_size = dlp->map[part].numBlocks;
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lp->d_partitions[part].p_offset = dlp->map[part].startBlock;
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lp->d_partitions[part].p_fsize = 1024;
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lp->d_partitions[part].p_fstype =
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(part==1) ? FS_SWAP : FS_BSDFFS;
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lp->d_npartitions += 1;
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#ifdef DEBUG
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printf(" Ultrix label rz%d%c: start %d len %d\n",
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DISKUNIT(dev), "abcdefgh"[part],
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lp->d_partitions[part].p_offset,
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lp->d_partitions[part].p_size);
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#endif
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}
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msg = "using ULTRIX partition information";
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break;
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}
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}
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}
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#endif /* COMPAT_ULTRIX */
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done:
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bp->b_flags = B_INVAL | B_AGE;
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brelse(bp);
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return (msg);
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}
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#endif /* COMPAT_ULTRIX */
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/*
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* Check new disk label for sensibility
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