99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*
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* ----------------------------------------------------------------------------
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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
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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 <err.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/sun_disklabel.h>
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#include <paths.h>
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#include <errno.h>
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#include "libdisk.h"
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int
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Write_Disk(const struct disk *d1)
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{
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struct sun_disklabel *sl;
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struct chunk *c, *c1, *c2;
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int i;
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char *p;
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u_long secpercyl;
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u_short *sp1, *sp2, cksum;
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char device[64];
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int fd;
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sl = calloc(sizeof *sl, 1);
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c = d1->chunks;
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c2 = c->part;
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secpercyl = d1->bios_sect * d1->bios_hd;
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sl->sl_pcylinders = c->size / secpercyl;
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sl->sl_ncylinders = c2->size / secpercyl;
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sl->sl_acylinders = sl->sl_pcylinders - sl->sl_ncylinders;
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sl->sl_magic = SUN_DKMAGIC;
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sl->sl_nsectors = d1->bios_sect;
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sl->sl_ntracks = d1->bios_hd;
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if (c->size > 4999 * 1024 * 2) {
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sprintf(sl->sl_text, "FreeBSD%luG cyl %u alt %u hd %u sec %u",
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(c->size + 1024 * 1024) / (2 * 1024 * 1024),
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sl->sl_ncylinders, sl->sl_acylinders,
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sl->sl_ntracks, sl->sl_nsectors);
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} else {
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sprintf(sl->sl_text, "FreeBSD%luM cyl %u alt %u hd %u sec %u",
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(c->size + 1024) / (2 * 1024),
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sl->sl_ncylinders, sl->sl_acylinders,
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sl->sl_ntracks, sl->sl_nsectors);
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}
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sl->sl_interleave = 1;
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sl->sl_sparespercyl = 0;
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sl->sl_rpm = 3600;
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for (c1 = c2->part; c1 != NULL; c1 = c1->next) {
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p = c1->name;
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p += strlen(p);
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p--;
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if (*p < 'a' || *p > 'h')
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continue;
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i = *p - 'a';
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sl->sl_part[i].sdkp_cyloffset = c1->offset / secpercyl;
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sl->sl_part[i].sdkp_nsectors = c1->size;
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}
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sp1 = (u_short *)sl;
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sp2 = (u_short *)(sl + 1);
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sl->sl_cksum = cksum = 0;
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while (sp1 < sp2)
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cksum ^= *sp1++;
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sl->sl_cksum = cksum;
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strcpy(device,_PATH_DEV);
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strcat(device,d1->name);
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fd = open(device,O_RDWR);
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if (fd < 0) {
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warn("open(%s) failed", device);
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return (1);
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}
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write_block(fd, 0, sl, sizeof *sl);
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for (i = 1; i < 16; i++)
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write_block(fd, i, d1->boot1 + (i * 512), 512);
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close(fd);
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return 0;
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}
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