freebsd-skq/lib/libdisk/write_disk.c

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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*/
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#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/disklabel.h>
#include <sys/diskslice.h>
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#include <paths.h>
#include "libdisk.h"
void
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Fill_Disklabel(struct disklabel *dl, const struct disk *new,
const struct disk *old, const struct chunk *c1)
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{
struct chunk *c2;
int j;
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memset(dl, 0, sizeof *dl);
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for (c2 = c1->part; c2; c2 = c2->next) {
if (c2->type == unused)
continue;
if (!strcmp(c2->name, "X"))
continue;
j = c2->name[strlen(c2->name) - 1] - 'a';
if (j < 0 || j >= MAXPARTITIONS || j == RAW_PART)
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continue;
dl->d_partitions[j].p_size = c2->size;
dl->d_partitions[j].p_offset = c2->offset;
dl->d_partitions[j].p_fstype = c2->subtype;
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}
dl->d_bbsize = BBSIZE;
/*
* Add in defaults for superblock size, interleave, and rpms
*/
dl->d_sbsize = 0;
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strcpy(dl->d_typename, c1->name);
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dl->d_secsize = 512;
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dl->d_secperunit = new->chunks->size;
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dl->d_ncylinders = new->bios_cyl;
dl->d_ntracks = new->bios_hd;
dl->d_nsectors = new->bios_sect;
dl->d_secpercyl = dl->d_ntracks * dl->d_nsectors;
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dl->d_npartitions = MAXPARTITIONS;
dl->d_type = new->name[0] == 's' || new->name[0] == 'd' ||
new->name[0] == 'o' ? DTYPE_SCSI : DTYPE_ESDI;
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dl->d_partitions[RAW_PART].p_size = c1->size;
dl->d_partitions[RAW_PART].p_offset = c1->offset;
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dl->d_rpm = 3600;
dl->d_interleave = 1;
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dl->d_magic = DISKMAGIC;
dl->d_magic2 = DISKMAGIC;
dl->d_checksum = dkcksum(dl);
}