83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@login.dknet.dk> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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* $FreeBSD$
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <err.h>
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#include <sys/types.h>
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#include "libdisk.h"
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void
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Set_Bios_Geom(struct disk *disk, u_long cyl, u_long hd, u_long sect)
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{
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disk->bios_cyl = cyl;
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disk->bios_hd = hd;
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disk->bios_sect = sect;
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Bios_Limit_Chunk(disk->chunks,1024*hd*sect);
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}
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void
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Sanitize_Bios_Geom(struct disk *disk)
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{
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int sane = 1;
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if (disk->bios_cyl > 1024)
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sane = 0;
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if (disk->bios_hd > 16)
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sane = 0;
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if (disk->bios_sect > 63)
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sane = 0;
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if (disk->bios_cyl*disk->bios_hd*disk->bios_sect !=
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disk->chunks->size)
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sane = 0;
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if (sane)
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return;
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/* First try something that IDE can handle */
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disk->bios_sect = 63;
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disk->bios_hd = 16;
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disk->bios_cyl = disk->chunks->size/(disk->bios_sect*disk->bios_hd);
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if (disk->bios_cyl < 1024)
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return;
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/* Hmm, try harder... */
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disk->bios_hd = 255;
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disk->bios_cyl = disk->chunks->size/(disk->bios_sect*disk->bios_hd);
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return;
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}
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void
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All_FreeBSD(struct disk *d, int force_all)
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{
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struct chunk *c;
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again:
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for (c=d->chunks->part;c;c=c->next)
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if (c->type != unused) {
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Delete_Chunk(d,c);
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goto again;
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}
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c=d->chunks;
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if (force_all) {
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Sanitize_Bios_Geom(d);
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Create_Chunk(d,c->offset,c->size,freebsd,0xa5,
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CHUNK_FORCE_ALL);
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} else {
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Create_Chunk(d,c->offset,c->size,freebsd,0xa5, 0);
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}
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}
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