freebsd-nq/sbin/sysinstall/bootarea.c

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/*
* Copyright (c) 1994, Paul Richards.
*
* All rights reserved.
*
* This software may be used, modified, copied, distributed, and
* sold, in both source and binary form provided that the above
* copyright and these terms are retained, verbatim, as the first
* lines of this file. Under no circumstances is the author
* responsible for the proper functioning of this software, nor does
* the author assume any responsibility for damages incurred with
* its use.
*/
#include <fstab.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <dialog.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/disklabel.h>
#include <sys/ioctl.h>
#include <sys/fcntl.h>
#include <sys/uio.h>
#include <ufs/ffs/fs.h>
#include "disk.h"
#include "sysinstall.h"
char boot1[] = BOOT1;
char boot2[] = BOOT2;
int
enable_label(int fd)
{
int flag = 1;
Public apology: I have walked all over Paul Richards code again, and severely lobotomized some of his stuff, in order to cut some corners for the 2.0-Alpha release. I belive that we can now manipulate fdisk and disklabel-stuff sufficiently for the release to actually be produced. It's not that I don't like Paul and his code, I just need something I can kick out of the door RSN. Sysinstall is now under absolute code-freeze, only Jordan has my permission to commit to this code (stage0 & 5). I would appreciate if everybody else would finds problems in sysinstall send patches to me, and I will commit them. THANKYOU. The fdisk/disklabel editors are made in pure ncurses, and follow a model "a`la spreadsheet". There are some important functions which are missing still, and I would appreciate if somebody would look at them. The FDISK part needs a "whole-disk" option, and it needs a "rewrite MBR-boot code" option. The DISKLABEL part needs to be able to "import DOS-partition". Both need a "HELP" function, (display a file "/HELP" using dialog is OK). It seems to me like the wd.c and sd.c should reread the physical record when a DIOCGDINFO is made, so that they can pick up changes in the MBR-data. Otherwise there will be a couple of weird cases where we cannot avoid replicating code from the kernel. If you want to play with this, look at src/release/Makefile. You may need to step back to version 1.38 of sys/i386/isa/fd.c to make "rootable" floppies, it is not clear at this time if that indeed is the problem I have been having. Sleep well, my friends, and expect the real Alpha in 24H, if the tree is still solid.
1994-11-01 10:10:43 +00:00
if (ioctl(fd, DIOCWLABEL, &flag) < 0)
return (-1);
return (0);
}
int
disable_label(int fd)
{
int flag = 0;
Public apology: I have walked all over Paul Richards code again, and severely lobotomized some of his stuff, in order to cut some corners for the 2.0-Alpha release. I belive that we can now manipulate fdisk and disklabel-stuff sufficiently for the release to actually be produced. It's not that I don't like Paul and his code, I just need something I can kick out of the door RSN. Sysinstall is now under absolute code-freeze, only Jordan has my permission to commit to this code (stage0 & 5). I would appreciate if everybody else would finds problems in sysinstall send patches to me, and I will commit them. THANKYOU. The fdisk/disklabel editors are made in pure ncurses, and follow a model "a`la spreadsheet". There are some important functions which are missing still, and I would appreciate if somebody would look at them. The FDISK part needs a "whole-disk" option, and it needs a "rewrite MBR-boot code" option. The DISKLABEL part needs to be able to "import DOS-partition". Both need a "HELP" function, (display a file "/HELP" using dialog is OK). It seems to me like the wd.c and sd.c should reread the physical record when a DIOCGDINFO is made, so that they can pick up changes in the MBR-data. Otherwise there will be a couple of weird cases where we cannot avoid replicating code from the kernel. If you want to play with this, look at src/release/Makefile. You may need to step back to version 1.38 of sys/i386/isa/fd.c to make "rootable" floppies, it is not clear at this time if that indeed is the problem I have been having. Sleep well, my friends, and expect the real Alpha in 24H, if the tree is still solid.
1994-11-01 10:10:43 +00:00
if (ioctl(fd, DIOCWLABEL, &flag) < 0)
return (-1);
return (0);
}
int
write_bootblocks(int disk)
{
int fd;
off_t offset;
int part = disk_list[disk].inst_part;
struct disklabel *lbl = &disk_list[disk].lbl;
unsigned char bootblocks[BBSIZE];
Public apology: I have walked all over Paul Richards code again, and severely lobotomized some of his stuff, in order to cut some corners for the 2.0-Alpha release. I belive that we can now manipulate fdisk and disklabel-stuff sufficiently for the release to actually be produced. It's not that I don't like Paul and his code, I just need something I can kick out of the door RSN. Sysinstall is now under absolute code-freeze, only Jordan has my permission to commit to this code (stage0 & 5). I would appreciate if everybody else would finds problems in sysinstall send patches to me, and I will commit them. THANKYOU. The fdisk/disklabel editors are made in pure ncurses, and follow a model "a`la spreadsheet". There are some important functions which are missing still, and I would appreciate if somebody would look at them. The FDISK part needs a "whole-disk" option, and it needs a "rewrite MBR-boot code" option. The DISKLABEL part needs to be able to "import DOS-partition". Both need a "HELP" function, (display a file "/HELP" using dialog is OK). It seems to me like the wd.c and sd.c should reread the physical record when a DIOCGDINFO is made, so that they can pick up changes in the MBR-data. Otherwise there will be a couple of weird cases where we cannot avoid replicating code from the kernel. If you want to play with this, look at src/release/Makefile. You may need to step back to version 1.38 of sys/i386/isa/fd.c to make "rootable" floppies, it is not clear at this time if that indeed is the problem I have been having. Sleep well, my friends, and expect the real Alpha in 24H, if the tree is still solid.
1994-11-01 10:10:43 +00:00
/* Load MBR boot code */
Public apology: I have walked all over Paul Richards code again, and severely lobotomized some of his stuff, in order to cut some corners for the 2.0-Alpha release. I belive that we can now manipulate fdisk and disklabel-stuff sufficiently for the release to actually be produced. It's not that I don't like Paul and his code, I just need something I can kick out of the door RSN. Sysinstall is now under absolute code-freeze, only Jordan has my permission to commit to this code (stage0 & 5). I would appreciate if everybody else would finds problems in sysinstall send patches to me, and I will commit them. THANKYOU. The fdisk/disklabel editors are made in pure ncurses, and follow a model "a`la spreadsheet". There are some important functions which are missing still, and I would appreciate if somebody would look at them. The FDISK part needs a "whole-disk" option, and it needs a "rewrite MBR-boot code" option. The DISKLABEL part needs to be able to "import DOS-partition". Both need a "HELP" function, (display a file "/HELP" using dialog is OK). It seems to me like the wd.c and sd.c should reread the physical record when a DIOCGDINFO is made, so that they can pick up changes in the MBR-data. Otherwise there will be a couple of weird cases where we cannot avoid replicating code from the kernel. If you want to play with this, look at src/release/Makefile. You may need to step back to version 1.38 of sys/i386/isa/fd.c to make "rootable" floppies, it is not clear at this time if that indeed is the problem I have been having. Sleep well, my friends, and expect the real Alpha in 24H, if the tree is still solid.
1994-11-01 10:10:43 +00:00
if ((fd = open(boot1, O_RDONLY)) == -1) {
sprintf(errmsg, "Couldn't open boot file %s for bootblocks\n%s\n",
boot1, strerror(errno));
return (-1);
}
Public apology: I have walked all over Paul Richards code again, and severely lobotomized some of his stuff, in order to cut some corners for the 2.0-Alpha release. I belive that we can now manipulate fdisk and disklabel-stuff sufficiently for the release to actually be produced. It's not that I don't like Paul and his code, I just need something I can kick out of the door RSN. Sysinstall is now under absolute code-freeze, only Jordan has my permission to commit to this code (stage0 & 5). I would appreciate if everybody else would finds problems in sysinstall send patches to me, and I will commit them. THANKYOU. The fdisk/disklabel editors are made in pure ncurses, and follow a model "a`la spreadsheet". There are some important functions which are missing still, and I would appreciate if somebody would look at them. The FDISK part needs a "whole-disk" option, and it needs a "rewrite MBR-boot code" option. The DISKLABEL part needs to be able to "import DOS-partition". Both need a "HELP" function, (display a file "/HELP" using dialog is OK). It seems to me like the wd.c and sd.c should reread the physical record when a DIOCGDINFO is made, so that they can pick up changes in the MBR-data. Otherwise there will be a couple of weird cases where we cannot avoid replicating code from the kernel. If you want to play with this, look at src/release/Makefile. You may need to step back to version 1.38 of sys/i386/isa/fd.c to make "rootable" floppies, it is not clear at this time if that indeed is the problem I have been having. Sleep well, my friends, and expect the real Alpha in 24H, if the tree is still solid.
1994-11-01 10:10:43 +00:00
if (read(fd, bootblocks, MBRSIZE) < 0) {
sprintf(errmsg, "Couldn't load boot file %s into bootblocks\n%s\n",
boot1, strerror(errno));
return (-1);
}
Public apology: I have walked all over Paul Richards code again, and severely lobotomized some of his stuff, in order to cut some corners for the 2.0-Alpha release. I belive that we can now manipulate fdisk and disklabel-stuff sufficiently for the release to actually be produced. It's not that I don't like Paul and his code, I just need something I can kick out of the door RSN. Sysinstall is now under absolute code-freeze, only Jordan has my permission to commit to this code (stage0 & 5). I would appreciate if everybody else would finds problems in sysinstall send patches to me, and I will commit them. THANKYOU. The fdisk/disklabel editors are made in pure ncurses, and follow a model "a`la spreadsheet". There are some important functions which are missing still, and I would appreciate if somebody would look at them. The FDISK part needs a "whole-disk" option, and it needs a "rewrite MBR-boot code" option. The DISKLABEL part needs to be able to "import DOS-partition". Both need a "HELP" function, (display a file "/HELP" using dialog is OK). It seems to me like the wd.c and sd.c should reread the physical record when a DIOCGDINFO is made, so that they can pick up changes in the MBR-data. Otherwise there will be a couple of weird cases where we cannot avoid replicating code from the kernel. If you want to play with this, look at src/release/Makefile. You may need to step back to version 1.38 of sys/i386/isa/fd.c to make "rootable" floppies, it is not clear at this time if that indeed is the problem I have been having. Sleep well, my friends, and expect the real Alpha in 24H, if the tree is still solid.
1994-11-01 10:10:43 +00:00
if (close(fd) == -1) {
sprintf(errmsg, "Couldn't close boot file %s\n%s\n", boot1,
strerror(errno));
return (-1);
}
Public apology: I have walked all over Paul Richards code again, and severely lobotomized some of his stuff, in order to cut some corners for the 2.0-Alpha release. I belive that we can now manipulate fdisk and disklabel-stuff sufficiently for the release to actually be produced. It's not that I don't like Paul and his code, I just need something I can kick out of the door RSN. Sysinstall is now under absolute code-freeze, only Jordan has my permission to commit to this code (stage0 & 5). I would appreciate if everybody else would finds problems in sysinstall send patches to me, and I will commit them. THANKYOU. The fdisk/disklabel editors are made in pure ncurses, and follow a model "a`la spreadsheet". There are some important functions which are missing still, and I would appreciate if somebody would look at them. The FDISK part needs a "whole-disk" option, and it needs a "rewrite MBR-boot code" option. The DISKLABEL part needs to be able to "import DOS-partition". Both need a "HELP" function, (display a file "/HELP" using dialog is OK). It seems to me like the wd.c and sd.c should reread the physical record when a DIOCGDINFO is made, so that they can pick up changes in the MBR-data. Otherwise there will be a couple of weird cases where we cannot avoid replicating code from the kernel. If you want to play with this, look at src/release/Makefile. You may need to step back to version 1.38 of sys/i386/isa/fd.c to make "rootable" floppies, it is not clear at this time if that indeed is the problem I have been having. Sleep well, my friends, and expect the real Alpha in 24H, if the tree is still solid.
1994-11-01 10:10:43 +00:00
/* Load second level boot code */
if ((fd = open(boot2, O_RDONLY)) == -1) {
sprintf(errmsg, "Couldn't open boot file %s for bootblocks\n%s\n",
boot2, strerror(errno));
return (-1);
}
if (read(fd, &bootblocks[MBRSIZE], (int)(lbl->d_bbsize - MBRSIZE)) < 0) {
sprintf(errmsg, "Couldn't load boot file %s into bootblocks\n%s\n",
boot2, strerror(errno));
return (-1);
}
Public apology: I have walked all over Paul Richards code again, and severely lobotomized some of his stuff, in order to cut some corners for the 2.0-Alpha release. I belive that we can now manipulate fdisk and disklabel-stuff sufficiently for the release to actually be produced. It's not that I don't like Paul and his code, I just need something I can kick out of the door RSN. Sysinstall is now under absolute code-freeze, only Jordan has my permission to commit to this code (stage0 & 5). I would appreciate if everybody else would finds problems in sysinstall send patches to me, and I will commit them. THANKYOU. The fdisk/disklabel editors are made in pure ncurses, and follow a model "a`la spreadsheet". There are some important functions which are missing still, and I would appreciate if somebody would look at them. The FDISK part needs a "whole-disk" option, and it needs a "rewrite MBR-boot code" option. The DISKLABEL part needs to be able to "import DOS-partition". Both need a "HELP" function, (display a file "/HELP" using dialog is OK). It seems to me like the wd.c and sd.c should reread the physical record when a DIOCGDINFO is made, so that they can pick up changes in the MBR-data. Otherwise there will be a couple of weird cases where we cannot avoid replicating code from the kernel. If you want to play with this, look at src/release/Makefile. You may need to step back to version 1.38 of sys/i386/isa/fd.c to make "rootable" floppies, it is not clear at this time if that indeed is the problem I have been having. Sleep well, my friends, and expect the real Alpha in 24H, if the tree is still solid.
1994-11-01 10:10:43 +00:00
if (close(fd) == -1) {
sprintf(errmsg, "Couldn't close boot file %s\n%s\n", boot2,
strerror(errno));
return (-1);
}
Public apology: I have walked all over Paul Richards code again, and severely lobotomized some of his stuff, in order to cut some corners for the 2.0-Alpha release. I belive that we can now manipulate fdisk and disklabel-stuff sufficiently for the release to actually be produced. It's not that I don't like Paul and his code, I just need something I can kick out of the door RSN. Sysinstall is now under absolute code-freeze, only Jordan has my permission to commit to this code (stage0 & 5). I would appreciate if everybody else would finds problems in sysinstall send patches to me, and I will commit them. THANKYOU. The fdisk/disklabel editors are made in pure ncurses, and follow a model "a`la spreadsheet". There are some important functions which are missing still, and I would appreciate if somebody would look at them. The FDISK part needs a "whole-disk" option, and it needs a "rewrite MBR-boot code" option. The DISKLABEL part needs to be able to "import DOS-partition". Both need a "HELP" function, (display a file "/HELP" using dialog is OK). It seems to me like the wd.c and sd.c should reread the physical record when a DIOCGDINFO is made, so that they can pick up changes in the MBR-data. Otherwise there will be a couple of weird cases where we cannot avoid replicating code from the kernel. If you want to play with this, look at src/release/Makefile. You may need to step back to version 1.38 of sys/i386/isa/fd.c to make "rootable" floppies, it is not clear at this time if that indeed is the problem I have been having. Sleep well, my friends, and expect the real Alpha in 24H, if the tree is still solid.
1994-11-01 10:10:43 +00:00
/* Copy the current MBR table into the boot blocks */
bcopy(&disk_list[disk].mbr.dospart, &bootblocks[DOSPARTOFF],
sizeof(struct dos_partition) * NDOSPART);
/* Set checksum */
lbl->d_checksum = 0;
lbl->d_checksum = dkcksum(lbl);
/* Copy disklabel into bootblocks */
bcopy(lbl, &bootblocks[(LABELSECTOR * lbl->d_secsize) + LABELOFFSET],
sizeof *lbl);
/* Calculate offset to start of MBR partition we're installing to */
offset = disk_list[disk].mbr.dospart[part].dp_start;
offset *= lbl->d_secsize;
/* Write the boot blocks out to the raw disk */
if ((fd = open(diskname(disk), O_RDWR)) == -1) {
sprintf(errmsg, "Couldn't open %s to write bootblocks\n%s\n",
scratch,strerror(errno));
return (-1);
}
if (lseek(fd, offset, SEEK_SET) < 0) {
sprintf(errmsg, "Couldn't seek to bootblocks area %s\n%s\n",
scratch, strerror(errno));
return (-1);
}
if (enable_label(fd) == -1)
return (-1);
if (write(fd, bootblocks, lbl->d_bbsize) != lbl->d_bbsize) {
sprintf(errmsg, "Failed to write out bootblocks to %s\n%s\n",
scratch, strerror(errno));
return (-1);
}
if (disable_label(fd) == -1)
return (-1);
/* Update the in-core label too if possible */
if (ioctl(fd, DIOCSDINFO, lbl) < 0) {
sprintf(errmsg, "Couldn't change in-core disklabel for %s\n\n%s",
scratch, strerror(errno));
return (-1);
}
if (close(fd) == -1) {
sprintf(errmsg, "Couldn't close device %s\n\n%s",
scratch, strerror(errno));
return (-1);
}
return(0);
}