48dd1a4713
Fix up the editor links for the disklabel editor. Correct the display of fields when they're longer than the viewable length.
164 lines
3.7 KiB
C
164 lines
3.7 KiB
C
/*
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* Copyright (c) 1994, Paul Richards.
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*
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* All rights reserved.
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*
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* This software may be used, modified, copied, distributed, and
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* sold, in both source and binary form provided that the above
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* copyright and these terms are retained, verbatim, as the first
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* lines of this file. Under no circumstances is the author
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* responsible for the proper functioning of this software, nor does
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* the author assume any responsibility for damages incurred with
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* its use.
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*/
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#include <fstab.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <dialog.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/errno.h>
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#include <sys/disklabel.h>
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#include <sys/ioctl.h>
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#include <sys/fcntl.h>
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#include <sys/uio.h>
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#include <ufs/ffs/fs.h>
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#include "disk.h"
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#include "sysinstall.h"
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char boot1[] = BOOT1;
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char boot2[] = BOOT2;
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int
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enable_label(int fd)
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{
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int flag = 1;
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if (ioctl(fd, DIOCWLABEL, &flag) < 0)
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return (-1);
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return (0);
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}
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int
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disable_label(int fd)
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{
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int flag = 0;
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if (ioctl(fd, DIOCWLABEL, &flag) < 0)
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return (-1);
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return (0);
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}
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int
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write_bootblocks(int disk)
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{
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int fd;
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off_t offset;
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int part = disk_list[disk].inst_part;
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struct disklabel *lbl = &disk_list[disk].lbl;
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unsigned char bootblocks[BBSIZE];
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/* Load MBR boot code */
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if ((fd = open(boot1, O_RDONLY)) == -1) {
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sprintf(errmsg, "Couldn't open boot file %s for bootblocks\n%s\n",
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boot1, strerror(errno));
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return (-1);
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}
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if (read(fd, bootblocks, MBRSIZE) < 0) {
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sprintf(errmsg, "Couldn't load boot file %s into bootblocks\n%s\n",
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boot1, strerror(errno));
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return (-1);
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}
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if (close(fd) == -1) {
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sprintf(errmsg, "Couldn't close boot file %s\n%s\n", boot1,
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strerror(errno));
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return (-1);
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}
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/* Load second level boot code */
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if ((fd = open(boot2, O_RDONLY)) == -1) {
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sprintf(errmsg, "Couldn't open boot file %s for bootblocks\n%s\n",
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boot2, strerror(errno));
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return (-1);
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}
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if (read(fd, &bootblocks[MBRSIZE], (int)(lbl->d_bbsize - MBRSIZE)) < 0) {
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sprintf(errmsg, "Couldn't load boot file %s into bootblocks\n%s\n",
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boot2, strerror(errno));
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return (-1);
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}
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if (close(fd) == -1) {
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sprintf(errmsg, "Couldn't close boot file %s\n%s\n", boot2,
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strerror(errno));
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return (-1);
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}
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/* Copy the current MBR table into the boot blocks */
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bcopy(&disk_list[disk].mbr.dospart, &bootblocks[DOSPARTOFF],
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sizeof(struct dos_partition) * NDOSPART);
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/* Set checksum */
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lbl->d_checksum = 0;
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lbl->d_checksum = dkcksum(lbl);
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/* Copy disklabel into bootblocks */
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bcopy(lbl, &bootblocks[(LABELSECTOR * lbl->d_secsize) + LABELOFFSET],
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sizeof *lbl);
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/* Calculate offset to start of MBR partition we're installing to */
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offset = disk_list[disk].mbr.dospart[part].dp_start;
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offset *= lbl->d_secsize;
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/* Write the boot blocks out to the raw disk */
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if ((fd = open(diskname(disk), O_RDWR)) == -1) {
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sprintf(errmsg, "Couldn't open %s to write bootblocks\n%s\n",
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scratch,strerror(errno));
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return (-1);
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}
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if (lseek(fd, offset, SEEK_SET) < 0) {
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sprintf(errmsg, "Couldn't seek to bootblocks area %s\n%s\n",
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scratch, strerror(errno));
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return (-1);
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}
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if (enable_label(fd) == -1)
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return (-1);
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if (write(fd, bootblocks, lbl->d_bbsize) != lbl->d_bbsize) {
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sprintf(errmsg, "Failed to write out bootblocks to %s\n%s\n",
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scratch, strerror(errno));
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return (-1);
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}
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if (disable_label(fd) == -1)
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return (-1);
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/* Update the in-core label too if possible */
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if (ioctl(fd, DIOCSDINFO, lbl) < 0) {
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sprintf(errmsg, "Couldn't change in-core disklabel for %s\n\n%s",
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scratch, strerror(errno));
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return (-1);
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}
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if (close(fd) == -1) {
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sprintf(errmsg, "Couldn't close device %s\n\n%s",
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scratch, strerror(errno));
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return (-1);
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}
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return(0);
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}
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