1398 lines
32 KiB
C
1398 lines
32 KiB
C
/* $NetBSD: fdisk.c,v 1.37 1999/06/04 18:59:15 thorpej Exp $ */
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/*
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* Mach Operating System
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* Copyright (c) 1992 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: fdisk.c,v 1.37 1999/06/04 18:59:15 thorpej Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/disklabel.h>
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#include <sys/disklabel_mbr.h>
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <util.h>
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#ifdef __i386__
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#include <ctype.h>
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#include <machine/cpu.h>
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#include <sys/sysctl.h>
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#endif
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#define LBUF 100
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static char lbuf[LBUF];
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/*
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* 14-Dec-89 Robert Baron (rvb) at Carnegie-Mellon University
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* Copyright (c) 1989 Robert. V. Baron
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* Created.
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*/
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char *disk = "/dev/rwd0d";
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struct disklabel disklabel; /* disk parameters */
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int cylinders, sectors, heads, cylindersectors, disksectors;
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struct mboot {
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u_int8_t padding[2]; /* force the longs to be long alligned */
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u_int8_t bootinst[MBR_PARTOFF];
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struct mbr_partition parts[NMBRPART];
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u_int16_t signature;
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};
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struct mboot mboot;
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#ifdef __i386__
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struct mbr_bootsel {
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u_int8_t defkey;
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u_int8_t flags;
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u_int16_t timeo;
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char nametab[4][9];
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u_int16_t magic;
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} __attribute__((packed));
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#define BFL_SELACTIVE 0x01
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#define BFL_EXTINT13 0x02
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#define SCAN_ENTER 0x1c
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#define SCAN_F1 0x3b
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#define MBR_BOOTSELOFF (MBR_PARTOFF - sizeof (struct mbr_bootsel))
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#define DEFAULT_BOOTCODE "/usr/mdec/mbr"
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#define DEFAULT_BOOTSELCODE "/usr/mdec/mbr_bootsel"
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#define OPTIONS "0123BSafius:b:c:"
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#else
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#define OPTIONS "0123Safius:b:c:"
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#endif
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#define ACTIVE 0x80
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int dos_cylinders;
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int dos_heads;
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int dos_sectors;
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int dos_cylindersectors;
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#define DOSSECT(s,c) (((s) & 0x3f) | (((c) >> 2) & 0xc0))
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#define DOSCYL(c) ((c) & 0xff)
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#define MAXCYL 1024
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int partition = -1;
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int a_flag; /* set active partition */
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int i_flag; /* init bootcode */
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int u_flag; /* update partition data */
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int sh_flag; /* Output data as shell defines */
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int f_flag; /* force --not interactive */
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int s_flag; /* set id,offset,size */
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int b_flag; /* Set cyl, heads, secs (as c/h/s) */
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int B_flag; /* Edit/install bootselect code */
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int b_cyl, b_head, b_sec; /* b_flag values. */
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int bootsel_modified;
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unsigned char bootcode[8192]; /* maximum size of bootcode */
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unsigned char tempcode[8192];
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int bootsize; /* actual size of bootcode */
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static char reserved[] = "reserved";
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struct part_type {
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int type;
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char *name;
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} part_types[] = {
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{0x00, "unused"},
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{0x01, "Primary DOS with 12 bit FAT"},
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{0x02, "XENIX / filesystem"},
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{0x03, "XENIX /usr filesystem"},
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{0x04, "Primary DOS with 16 bit FAT <32M"},
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{0x05, "Extended partition"},
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{0x06, "Primary 'big' DOS, 16-bit FAT (> 32MB)"},
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{0x07, "OS/2 HPFS or NTFS or QNX2 or Advanced UNIX"},
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{0x08, "AIX filesystem or OS/2 (thru v1.3) or DELL multiple drives"
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"or Commodore DOS or SplitDrive"},
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{0x09, "AIX boot partition or Coherent"},
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{0x0A, "OS/2 Boot Manager or Coherent swap or OPUS"},
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{0x0b, "Primary DOS with 32 bit FAT"},
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{0x0c, "Primary DOS with 32 bit FAT - LBA"},
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{0x0d, "Type 7??? - LBA"},
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{0x0E, "DOS (16-bit FAT) - LBA"},
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{0x0F, "Ext. partition - LBA"},
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{0x10, "OPUS"},
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{0x11, "OS/2 BM: hidden DOS 12-bit FAT"},
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{0x12, "Compaq diagnostics"},
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{0x14, "OS/2 BM: hidden DOS 16-bit FAT <32M or Novell DOS 7.0 bug"},
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{0x16, "OS/2 BM: hidden DOS 16-bit FAT >=32M"},
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{0x17, "OS/2 BM: hidden IFS"},
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{0x18, "AST Windows swapfile"},
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{0x19, "Willowtech Photon coS"},
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{0x1e, "hidden FAT95"},
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{0x20, "Willowsoft OFS1"},
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{0x21, reserved},
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{0x23, reserved},
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{0x24, "NEC DOS"},
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{0x26, reserved},
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{0x31, reserved},
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{0x33, reserved},
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{0x34, reserved},
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{0x36, reserved},
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{0x38, "Theos"},
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{0x3C, "PartitionMagic recovery"},
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{0x40, "VENIX 286 or LynxOS"},
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{0x41, "Linux/MINIX (sharing disk with DRDOS) or Personal RISC boot"},
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{0x42, "SFS or Linux swap (sharing disk with DRDOS)"},
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{0x43, "Linux native (sharing disk with DRDOS)"},
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{0x50, "DM (disk manager)"},
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{0x51, "DM6 Aux1 (or Novell)"},
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{0x52, "CP/M or Microport SysV/AT"},
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{0x53, "DM6 Aux3"},
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{0x54, "DM6 DDO"},
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{0x55, "EZ-Drive (disk manager)"},
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{0x56, "Golden Bow (disk manager)"},
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{0x5C, "Priam Edisk (disk manager)"},
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{0x61, "SpeedStor"},
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{0x63, "GNU HURD or Mach or Sys V/386 (such as ISC UNIX) or MtXinu"},
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{0x64, "Novell Netware 2.xx or Speedstore"},
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{0x65, "Novell Netware 3.xx"},
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{0x66, "Novell 386 Netware"},
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{0x67, "Novell"},
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{0x68, "Novell"},
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{0x69, "Novell"},
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{0x70, "DiskSecure Multi-Boot"},
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{0x71, reserved},
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{0x73, reserved},
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{0x74, reserved},
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{0x75, "PC/IX"},
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{0x76, reserved},
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{0x77, "QNX4.x"},
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{0x78, "QNX4.x 2nd part"},
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{0x79, "QNX4.x 3rd part"},
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{0x80, "MINIX until 1.4a"},
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{0x81, "MINIX since 1.4b, early Linux, Mitac dmgr"},
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{0x82, "Linux swap or Prime or Solaris"},
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{0x83, "Linux native"},
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{0x84, "OS/2 hidden C: drive"},
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{0x85, "Linux extended"},
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{0x86, "NT FAT volume set"},
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{0x87, "NTFS volume set or HPFS mirrored"},
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{0x93, "Amoeba filesystem"},
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{0x94, "Amoeba bad block table"},
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{0x99, "Mylex EISA SCSI"},
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{0x9f, "BSDI?"},
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{0xA0, "IBM Thinkpad hibernation"},
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{0xa1, reserved},
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{0xa3, reserved},
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{0xa4, reserved},
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{0xA5, "FreeBSD or 386BSD or old NetBSD"},
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{0xA6, "OpenBSD"},
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{0xA7, "NeXTSTEP 486"},
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{0xa9, "NetBSD"},
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{0xb1, reserved},
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{0xb3, reserved},
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{0xb4, reserved},
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{0xb6, reserved},
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{0xB7, "BSDI BSD/386 filesystem"},
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{0xB8, "BSDI BSD/386 swap"},
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{0xc0, "CTOS"},
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{0xC1, "DRDOS/sec (FAT-12)"},
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{0xC4, "DRDOS/sec (FAT-16, < 32M)"},
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{0xC6, "DRDOS/sec (FAT-16, >= 32M)"},
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{0xC7, "Syrinx (Cyrnix?) or HPFS disabled"},
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{0xd8, "CP/M 86"},
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{0xDB, "CP/M or Concurrent CP/M or Concurrent DOS or CTOS"},
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{0xE1, "DOS access or SpeedStor 12-bit FAT extended partition"},
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{0xE3, "DOS R/O or SpeedStor or Storage Dimensions"},
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{0xE4, "SpeedStor 16-bit FAT extended partition < 1024 cyl."},
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{0xe5, reserved},
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{0xe6, reserved},
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{0xeb, "BeOS"},
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{0xF1, "SpeedStor or Storage Dimensions"},
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{0xF2, "DOS 3.3+ Secondary"},
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{0xf3, reserved},
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{0xF4, "SpeedStor large partition or Storage Dimensions"},
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{0xf6, reserved},
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{0xFE, "SpeedStor >1024 cyl. or LANstep or IBM PS/2 IML"},
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{0xFF, "Xenix Bad Block Table"},
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};
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void usage __P((void));
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void print_s0 __P((int));
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void print_part __P((int));
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int read_boot __P((char *, char *, size_t));
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void init_sector0 __P((int, int));
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void intuit_translated_geometry __P((void));
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void get_geometry __P((void));
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void get_diskname __P((char *, char *, size_t));
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int try_heads __P((quad_t, quad_t, quad_t, quad_t, quad_t, quad_t, quad_t,
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quad_t));
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int try_sectors __P((quad_t, quad_t, quad_t, quad_t, quad_t));
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void change_part __P((int, int, int, int));
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void print_params __P((void));
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void change_active __P((int));
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void get_params_to_use __P((void));
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void dos __P((int, unsigned char *, unsigned char *, unsigned char *));
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int open_disk __P((int));
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int read_disk __P((int, void *));
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int write_disk __P((int, void *));
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int get_params __P((void));
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int read_s0 __P((void));
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int write_s0 __P((void));
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int yesno __P((char *));
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void decimal __P((char *, int *));
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int type_match __P((const void *, const void *));
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char *get_type __P((int));
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int get_mapping __P((int, int *, int *, int *, long *));
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#ifdef __i386__
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void configure_bootsel __P((void));
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#endif
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static inline unsigned short getshort __P((void *));
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static inline void putshort __P((void *p, unsigned short));
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static inline unsigned long getlong __P((void *));
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static inline void putlong __P((void *, unsigned long));
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int main __P((int, char **));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch;
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int part;
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int csysid, cstart, csize; /* For the b_flag. */
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a_flag = i_flag = u_flag = sh_flag = f_flag = s_flag = b_flag = 0;
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csysid = cstart = csize = 0;
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while ((ch = getopt(argc, argv, OPTIONS)) != -1)
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switch (ch) {
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case '0':
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partition = 0;
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break;
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case '1':
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partition = 1;
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break;
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case '2':
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partition = 2;
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break;
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case '3':
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partition = 3;
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break;
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#ifdef __i386__
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case 'B':
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B_flag = 1;
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break;
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#endif
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case 'S':
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sh_flag = 1;
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break;
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case 'a':
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a_flag = 1;
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break;
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case 'f':
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f_flag = 1;
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break;
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case 'i':
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i_flag = 1;
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break;
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case 'u':
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u_flag = 1;
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break;
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case 's':
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s_flag = 1;
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if (sscanf (optarg, "%d/%d/%d",
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&csysid, &cstart, &csize) != 3) {
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(void)fprintf (stderr, "%s: Bad argument "
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"to the -s flag.\n",
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argv[0]);
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exit (1);
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}
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break;
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case 'b':
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b_flag = 1;
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if (sscanf (optarg, "%d/%d/%d",
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&b_cyl, &b_head, &b_sec) != 3) {
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(void)fprintf (stderr, "%s: Bad argument "
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"to the -b flag.\n",
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argv[0]);
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exit (1);
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}
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if (b_cyl > MAXCYL)
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b_cyl = MAXCYL;
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break;
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case 'c':
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bootsize = read_boot(optarg, bootcode, sizeof bootcode);
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break;
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (sh_flag && (a_flag || i_flag || u_flag || f_flag || s_flag))
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usage();
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if (B_flag && (a_flag || i_flag || u_flag || f_flag || s_flag))
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usage();
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if (partition == -1 && s_flag) {
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(void) fprintf (stderr,
|
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"-s flag requires a partition selected.\n");
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usage();
|
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}
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|
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if (argc > 0)
|
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disk = argv[0];
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|
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if (open_disk(B_flag || a_flag || i_flag || u_flag) < 0)
|
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exit(1);
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|
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if (read_s0())
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init_sector0(sectors > 63 ? 63 : sectors, 1);
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|
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#ifdef __i386__
|
||
get_geometry();
|
||
#else
|
||
intuit_translated_geometry();
|
||
#endif
|
||
|
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|
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if ((i_flag || u_flag) && (!f_flag || b_flag))
|
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get_params_to_use();
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||
|
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if (i_flag)
|
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init_sector0(dos_sectors > 63 ? 63 : dos_sectors, 0);
|
||
|
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/* Do the update stuff! */
|
||
if (u_flag) {
|
||
if (!f_flag)
|
||
printf("Partition table:\n");
|
||
if (partition == -1)
|
||
for (part = 0; part < NMBRPART; part++)
|
||
change_part(part,-1, -1, -1);
|
||
else
|
||
change_part(partition, csysid, cstart, csize);
|
||
} else
|
||
if (!i_flag)
|
||
print_s0(partition);
|
||
|
||
if (a_flag)
|
||
change_active(partition);
|
||
|
||
#ifdef __i386__
|
||
if (B_flag) {
|
||
configure_bootsel();
|
||
if (B_flag && bootsel_modified)
|
||
write_s0();
|
||
}
|
||
#endif
|
||
|
||
if (u_flag || a_flag || i_flag) {
|
||
if (!f_flag) {
|
||
printf("\nWe haven't written the MBR back to disk "
|
||
"yet. This is your last chance.\n");
|
||
print_s0(-1);
|
||
if (yesno("Should we write new partition table?"))
|
||
write_s0();
|
||
} else
|
||
write_s0();
|
||
}
|
||
|
||
exit(0);
|
||
}
|
||
|
||
void
|
||
usage()
|
||
{
|
||
(void)fprintf(stderr, "usage: fdisk [-aiufSc] [-0|-1|-2|-3] "
|
||
"[device]\n");
|
||
exit(1);
|
||
}
|
||
|
||
void
|
||
print_s0(which)
|
||
int which;
|
||
{
|
||
int part;
|
||
|
||
print_params();
|
||
if (!sh_flag)
|
||
printf("Partition table:\n");
|
||
if (which == -1) {
|
||
for (part = 0; part < NMBRPART; part++) {
|
||
if (!sh_flag)
|
||
printf("%d: ", part);
|
||
print_part(part);
|
||
}
|
||
} else
|
||
print_part(which);
|
||
}
|
||
|
||
static inline unsigned short
|
||
getshort(p)
|
||
void *p;
|
||
{
|
||
unsigned char *cp = p;
|
||
|
||
return cp[0] | (cp[1] << 8);
|
||
}
|
||
|
||
static inline void
|
||
putshort(p, l)
|
||
void *p;
|
||
unsigned short l;
|
||
{
|
||
unsigned char *cp = p;
|
||
|
||
*cp++ = l;
|
||
*cp++ = l >> 8;
|
||
}
|
||
|
||
static inline unsigned long
|
||
getlong(p)
|
||
void *p;
|
||
{
|
||
unsigned char *cp = p;
|
||
|
||
return cp[0] | (cp[1] << 8) | (cp[2] << 16) | (cp[3] << 24);
|
||
}
|
||
|
||
static inline void
|
||
putlong(p, l)
|
||
void *p;
|
||
unsigned long l;
|
||
{
|
||
unsigned char *cp = p;
|
||
|
||
*cp++ = l;
|
||
*cp++ = l >> 8;
|
||
*cp++ = l >> 16;
|
||
*cp++ = l >> 24;
|
||
}
|
||
|
||
void
|
||
print_part(part)
|
||
int part;
|
||
{
|
||
struct mbr_partition *partp;
|
||
int empty;
|
||
|
||
partp = &mboot.parts[part];
|
||
empty = (partp->mbrp_typ == 0);
|
||
|
||
if (sh_flag) {
|
||
if (empty) {
|
||
printf("PART%dSIZE=0\n", part);
|
||
return;
|
||
}
|
||
|
||
printf("PART%dID=%d\n", part, partp->mbrp_typ);
|
||
printf("PART%dSIZE=%ld\n", part, getlong(&partp->mbrp_size));
|
||
printf("PART%dSTART=%ld\n", part, getlong(&partp->mbrp_start));
|
||
printf("PART%dFLAG=0x%x\n", part, partp->mbrp_flag);
|
||
printf("PART%dBCYL=%d\n", part, MBR_PCYL(partp->mbrp_scyl,
|
||
partp->mbrp_ssect));
|
||
printf("PART%dBHEAD=%d\n", part, partp->mbrp_shd);
|
||
printf("PART%dBSEC=%d\n", part, MBR_PSECT(partp->mbrp_ssect));
|
||
printf("PART%dECYL=%d\n", part, MBR_PCYL(partp->mbrp_ecyl,
|
||
partp->mbrp_esect));
|
||
printf("PART%dEHEAD=%d\n", part, partp->mbrp_ehd);
|
||
printf("PART%dESEC=%d\n", part, MBR_PSECT(partp->mbrp_esect));
|
||
return;
|
||
}
|
||
|
||
/* Not sh_flag. */
|
||
if (empty) {
|
||
printf("<UNUSED>\n");
|
||
return;
|
||
}
|
||
printf("sysid %d (%s)\n", partp->mbrp_typ, get_type(partp->mbrp_typ));
|
||
printf(" start %ld, size %ld (%ld MB), flag 0x%x\n",
|
||
getlong(&partp->mbrp_start), getlong(&partp->mbrp_size),
|
||
getlong(&partp->mbrp_size) * 512 / (1024 * 1024), partp->mbrp_flag);
|
||
printf("\tbeg: cylinder %4d, head %3d, sector %2d\n",
|
||
MBR_PCYL(partp->mbrp_scyl, partp->mbrp_ssect),
|
||
partp->mbrp_shd, MBR_PSECT(partp->mbrp_ssect));
|
||
printf("\tend: cylinder %4d, head %3d, sector %2d\n",
|
||
MBR_PCYL(partp->mbrp_ecyl, partp->mbrp_esect),
|
||
partp->mbrp_ehd, MBR_PSECT(partp->mbrp_esect));
|
||
}
|
||
|
||
int
|
||
read_boot(name, buf, len)
|
||
char *name;
|
||
char *buf;
|
||
size_t len;
|
||
{
|
||
int bfd, ret;
|
||
struct stat st;
|
||
|
||
if ((bfd = open(name, O_RDONLY)) < 0)
|
||
err(1, "%s", name);
|
||
if (fstat(bfd, &st) == -1)
|
||
err(1, "%s", name);
|
||
if (st.st_size > len)
|
||
errx(1, "%s: bootcode too large", name);
|
||
ret = st.st_size;
|
||
if (ret < 0x200)
|
||
errx(1, "%s: bootcode too small", name);
|
||
if (read(bfd, buf, len) != ret)
|
||
err(1, "%s", name);
|
||
close(bfd);
|
||
|
||
/*
|
||
* Do some sanity checking here
|
||
*/
|
||
if (getshort(bootcode + MBR_MAGICOFF) != MBR_MAGIC)
|
||
errx(1, "%s: invalid magic", name);
|
||
ret = (ret + 0x1ff) / 0x200;
|
||
ret *= 0x200;
|
||
return ret;
|
||
}
|
||
|
||
void
|
||
init_sector0(start, dopart)
|
||
int start, dopart;
|
||
{
|
||
int i;
|
||
|
||
#ifdef DEFAULT_BOOTCODE
|
||
if (!bootsize)
|
||
bootsize = read_boot(DEFAULT_BOOTCODE, bootcode,
|
||
sizeof bootcode);
|
||
#endif
|
||
|
||
memcpy(mboot.bootinst, bootcode, sizeof(mboot.bootinst));
|
||
putshort(&mboot.signature, MBR_MAGIC);
|
||
|
||
if (dopart)
|
||
for (i=0; i<4; i++)
|
||
memset(&mboot.parts[i], 0, sizeof(struct mbr_partition));
|
||
|
||
}
|
||
|
||
#ifdef __i386__
|
||
|
||
void
|
||
get_diskname(fullname, diskname, size)
|
||
char *fullname;
|
||
char *diskname;
|
||
size_t size;
|
||
{
|
||
char *p;
|
||
char *p2;
|
||
size_t len;
|
||
|
||
p = strrchr(fullname, '/');
|
||
if (p == NULL)
|
||
p = fullname;
|
||
else
|
||
p++;
|
||
|
||
if (*p == 0) {
|
||
strncpy(diskname, fullname, size - 1);
|
||
diskname[size - 1] = '\0';
|
||
return;
|
||
}
|
||
|
||
if (*p == 'r')
|
||
p++;
|
||
|
||
for (p2 = p; *p2 != 0; p2++)
|
||
if (isdigit(*p2))
|
||
break;
|
||
if (*p2 == 0) {
|
||
/* XXX invalid diskname? */
|
||
strncpy(diskname, fullname, size - 1);
|
||
diskname[size - 1] = '\0';
|
||
return;
|
||
}
|
||
while (isdigit(*p2))
|
||
p2++;
|
||
|
||
len = p2 - p;
|
||
if (len > size) {
|
||
/* XXX */
|
||
strncpy(diskname, fullname, size - 1);
|
||
diskname[size - 1] = '\0';
|
||
return;
|
||
}
|
||
|
||
strncpy(diskname, p, len);
|
||
diskname[len] = 0;
|
||
}
|
||
|
||
void
|
||
get_geometry()
|
||
{
|
||
int mib[2], i;
|
||
size_t len;
|
||
struct disklist *dl;
|
||
struct biosdisk_info *bip;
|
||
struct nativedisk_info *nip;
|
||
char diskname[8];
|
||
|
||
mib[0] = CTL_MACHDEP;
|
||
mib[1] = CPU_DISKINFO;
|
||
if (sysctl(mib, 2, NULL, &len, NULL, 0) < 0) {
|
||
intuit_translated_geometry();
|
||
return;
|
||
}
|
||
dl = (struct disklist *) malloc(len);
|
||
sysctl(mib, 2, dl, &len, NULL, 0);
|
||
|
||
get_diskname(disk, diskname, sizeof diskname);
|
||
|
||
for (i = 0; i < dl->dl_nnativedisks; i++) {
|
||
nip = &dl->dl_nativedisks[i];
|
||
if (strcmp(diskname, nip->ni_devname))
|
||
continue;
|
||
/*
|
||
* XXX listing possible matches is better. This is ok
|
||
* for now because the user has a chance to change
|
||
* it later.
|
||
*/
|
||
if (nip->ni_nmatches != 0) {
|
||
bip = &dl->dl_biosdisks[nip->ni_biosmatches[0]];
|
||
dos_cylinders = bip->bi_cyl;
|
||
dos_heads = bip->bi_head;
|
||
dos_sectors = bip->bi_sec;
|
||
dos_cylindersectors = bip->bi_head * bip->bi_sec;
|
||
return;
|
||
}
|
||
}
|
||
/* Allright, allright, make a stupid guess.. */
|
||
intuit_translated_geometry();
|
||
}
|
||
|
||
void
|
||
configure_bootsel()
|
||
{
|
||
struct mbr_bootsel *mbs =
|
||
(struct mbr_bootsel *)&mboot.bootinst[MBR_BOOTSELOFF];
|
||
int i, nused, firstpart = -1, item;
|
||
char desc[10], *p;
|
||
int timo, entry_changed = 0;
|
||
|
||
for (i = nused = 0; i < NMBRPART; i++) {
|
||
if (mboot.parts[i].mbrp_typ != 0) {
|
||
if (firstpart == -1)
|
||
firstpart = i;
|
||
nused++;
|
||
}
|
||
}
|
||
|
||
if (nused == 0) {
|
||
printf("No used partitions found. Partition the disk first.\n");
|
||
return;
|
||
}
|
||
|
||
if (mbs->magic != MBR_MAGIC) {
|
||
if (!yesno("Bootselector not yet installed. Install it now?")) {
|
||
printf("Bootselector not installed.\n");
|
||
return;
|
||
}
|
||
bootsize = read_boot(DEFAULT_BOOTSELCODE, bootcode,
|
||
sizeof bootcode);
|
||
memcpy(mboot.bootinst, bootcode, sizeof(mboot.bootinst));
|
||
bootsel_modified = 1;
|
||
mbs->flags |= BFL_SELACTIVE;
|
||
} else {
|
||
if (mbs->flags & BFL_SELACTIVE) {
|
||
printf("The bootselector is installed and active.\n");
|
||
if (!yesno("Do you want to change its settings?")) {
|
||
if (yesno("Do you want to deactivate it?")) {
|
||
mbs->flags &= ~BFL_SELACTIVE;
|
||
bootsel_modified = 1;
|
||
goto done;
|
||
}
|
||
return;
|
||
}
|
||
} else {
|
||
printf("The bootselector is installed but not active.\n");
|
||
if (yesno("Do you want to activate it?")) {
|
||
mbs->flags |= BFL_SELACTIVE;
|
||
bootsel_modified = 1;
|
||
}
|
||
if (!yesno("Do you want to change its settings?"))
|
||
goto done;
|
||
}
|
||
}
|
||
|
||
printf("\n\nPartition table:\n");
|
||
for (i = 0; i < NMBRPART; i++) {
|
||
printf("%d: ", i);
|
||
print_part(i);
|
||
}
|
||
|
||
printf("\n\nCurrent boot selection menu option names:\n");
|
||
for (i = 0; i < NMBRPART; i++) {
|
||
if (mbs->nametab[i][0] != 0)
|
||
printf("%d: %s\n", i, &mbs->nametab[i][0]);
|
||
else
|
||
printf("%d: Unused\n", i);
|
||
}
|
||
printf("\n");
|
||
|
||
item = firstpart;
|
||
|
||
editentries:
|
||
while (1) {
|
||
decimal("Change which entry (-1 quits)?", &item);
|
||
if (item == -1)
|
||
break;
|
||
if (item < 0 || item >= NMBRPART) {
|
||
printf("Invalid entry number\n");
|
||
continue;
|
||
}
|
||
if (mboot.parts[item].mbrp_typ == 0) {
|
||
printf("The matching partition entry is unused\n");
|
||
continue;
|
||
}
|
||
|
||
printf("Enter descriptions (max. 8 characters): ");
|
||
rewind(stdin);
|
||
fgets(desc, 10, stdin);
|
||
p = strchr(desc, '\n');
|
||
if (p != NULL)
|
||
*p = 0;
|
||
else
|
||
desc[9] = 0;
|
||
strcpy(&mbs->nametab[item][0], desc);
|
||
entry_changed = bootsel_modified = 1;
|
||
}
|
||
|
||
if (entry_changed)
|
||
printf("Boot selection menu option names are now:\n");
|
||
|
||
firstpart = -1;
|
||
for (i = 0; i < NMBRPART; i++) {
|
||
if (mbs->nametab[i][0] != 0) {
|
||
firstpart = i;
|
||
if (entry_changed)
|
||
printf("%d: %s\n", i, &mbs->nametab[i][0]);
|
||
} else {
|
||
if (entry_changed)
|
||
printf("%d: Unused\n", i);
|
||
}
|
||
}
|
||
if (entry_changed)
|
||
printf("\n");
|
||
|
||
if (firstpart == -1) {
|
||
printf("All menu entries are now inactive.\n");
|
||
if (!yesno("Are you sure about this?"))
|
||
goto editentries;
|
||
} else {
|
||
if (!(mbs->flags & BFL_SELACTIVE)) {
|
||
printf("The bootselector is not yet active.\n");
|
||
if (yesno("Activate it now?"))
|
||
mbs->flags |= BFL_SELACTIVE;
|
||
}
|
||
}
|
||
|
||
/* bootsel is dirty from here on out. */
|
||
bootsel_modified = 1;
|
||
|
||
/* The timeout value is in ticks, 18.2 Hz. Avoid using floats. */
|
||
timo = ((1000 * mbs->timeo) / 18200);
|
||
do {
|
||
decimal("Timeout value", &timo);
|
||
} while (timo < 0 || timo > 3600);
|
||
mbs->timeo = (u_int16_t)((timo * 18200) / 1000);
|
||
|
||
printf("Select the default boot option. Options are:\n\n");
|
||
for (i = 0; i < NMBRPART; i++) {
|
||
if (mbs->nametab[i][0] != 0)
|
||
printf("%d: %s\n", i, &mbs->nametab[i][0]);
|
||
}
|
||
for (i = 4; i < 10; i++)
|
||
printf("%d: Harddisk %d\n", i, i - 4);
|
||
printf("10: The first active partition\n");
|
||
|
||
if (mbs->defkey == SCAN_ENTER)
|
||
item = 10;
|
||
else
|
||
item = mbs->defkey - SCAN_F1;
|
||
|
||
if (item < 0 || item > 10 || mbs->nametab[item][0] == 0)
|
||
item = 10;
|
||
|
||
do {
|
||
decimal("Default boot option", &item);
|
||
} while (item < 0 || item > 10 ||
|
||
(item <= 3 && mbs->nametab[item][0] == 0));
|
||
|
||
if (item == 10)
|
||
mbs->defkey = SCAN_ENTER;
|
||
else
|
||
mbs->defkey = SCAN_F1 + item;
|
||
|
||
done:
|
||
for (i = 0; i < NMBRPART; i++) {
|
||
if (mboot.parts[i].mbrp_typ != 0 &&
|
||
mboot.parts[i].mbrp_start >=
|
||
(dos_cylinders * dos_heads * dos_sectors)) {
|
||
mbs->flags |= BFL_EXTINT13;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (bootsel_modified != 0 && !yesno("Update the bootselector?"))
|
||
bootsel_modified = 0;
|
||
}
|
||
#endif
|
||
|
||
|
||
/* Prerequisite: the disklabel parameters and master boot record must
|
||
* have been read (i.e. dos_* and mboot are meaningful).
|
||
* Specification: modifies dos_cylinders, dos_heads, dos_sectors, and
|
||
* dos_cylindersectors to be consistent with what the
|
||
* partition table is using, if we can find a geometry
|
||
* which is consistent with all partition table entries.
|
||
* We may get the number of cylinders slightly wrong (in
|
||
* the conservative direction). The idea is to be able
|
||
* to create a NetBSD partition on a disk we don't know
|
||
* the translated geometry of.
|
||
* This whole routine should be replaced with a kernel interface to get
|
||
* the BIOS geometry (which in turn requires modifications to the i386
|
||
* boot loader to pass in the BIOS geometry for each disk). */
|
||
void
|
||
intuit_translated_geometry()
|
||
{
|
||
|
||
int cylinders = -1, heads = -1, sectors = -1, i, j;
|
||
int c1, h1, s1, c2, h2, s2;
|
||
long a1, a2;
|
||
quad_t num, denom;
|
||
|
||
/* Try to deduce the number of heads from two different mappings. */
|
||
for (i = 0; i < NMBRPART * 2; i++) {
|
||
if (get_mapping(i, &c1, &h1, &s1, &a1) < 0)
|
||
continue;
|
||
for (j = 0; j < 8; j++) {
|
||
if (get_mapping(j, &c2, &h2, &s2, &a2) < 0)
|
||
continue;
|
||
num = (quad_t)h1*(a2-s2) - (quad_t)h2*(a1-s1);
|
||
denom = (quad_t)c2*(a1-s1) - (quad_t)c1*(a2-s2);
|
||
if (denom != 0 && num % denom == 0) {
|
||
heads = num / denom;
|
||
break;
|
||
}
|
||
}
|
||
if (heads != -1)
|
||
break;
|
||
}
|
||
|
||
if (heads == -1)
|
||
return;
|
||
|
||
/* Now figure out the number of sectors from a single mapping. */
|
||
for (i = 0; i < NMBRPART * 2; i++) {
|
||
if (get_mapping(i, &c1, &h1, &s1, &a1) < 0)
|
||
continue;
|
||
num = a1 - s1;
|
||
denom = c1 * heads + h1;
|
||
if (denom != 0 && num % denom == 0) {
|
||
sectors = num / denom;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (sectors == -1)
|
||
return;
|
||
|
||
/* Estimate the number of cylinders. */
|
||
cylinders = disklabel.d_secperunit / heads / sectors;
|
||
|
||
/* Now verify consistency with each of the partition table entries.
|
||
* Be willing to shove cylinders up a little bit to make things work,
|
||
* but translation mismatches are fatal. */
|
||
for (i = 0; i < NMBRPART * 2; i++) {
|
||
if (get_mapping(i, &c1, &h1, &s1, &a1) < 0)
|
||
continue;
|
||
if (sectors * (c1 * heads + h1) + s1 != a1)
|
||
return;
|
||
if (c1 >= cylinders)
|
||
cylinders = c1 + 1;
|
||
}
|
||
|
||
/* Everything checks out. Reset the geometry to use for further
|
||
* calculations. */
|
||
dos_cylinders = cylinders;
|
||
dos_heads = heads;
|
||
dos_sectors = sectors;
|
||
dos_cylindersectors = heads * sectors;
|
||
}
|
||
|
||
/* For the purposes of intuit_translated_geometry(), treat the partition
|
||
* table as a list of eight mapping between (cylinder, head, sector)
|
||
* triplets and absolute sectors. Get the relevant geometry triplet and
|
||
* absolute sectors for a given entry, or return -1 if it isn't present.
|
||
* Note: for simplicity, the returned sector is 0-based. */
|
||
int
|
||
get_mapping(i, cylinder, head, sector, absolute)
|
||
int i, *cylinder, *head, *sector;
|
||
long *absolute;
|
||
{
|
||
struct mbr_partition *part = &mboot.parts[i / 2];
|
||
|
||
if (part->mbrp_typ == 0)
|
||
return -1;
|
||
if (i % 2 == 0) {
|
||
*cylinder = MBR_PCYL(part->mbrp_scyl, part->mbrp_ssect);
|
||
*head = part->mbrp_shd;
|
||
*sector = MBR_PSECT(part->mbrp_ssect) - 1;
|
||
*absolute = getlong(&part->mbrp_start);
|
||
} else {
|
||
*cylinder = MBR_PCYL(part->mbrp_ecyl, part->mbrp_esect);
|
||
*head = part->mbrp_ehd;
|
||
*sector = MBR_PSECT(part->mbrp_esect) - 1;
|
||
*absolute = getlong(&part->mbrp_start)
|
||
+ getlong(&part->mbrp_size) - 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
change_part(part, csysid, cstart, csize)
|
||
int part, csysid, cstart, csize;
|
||
{
|
||
struct mbr_partition *partp;
|
||
|
||
partp = &mboot.parts[part];
|
||
|
||
if (s_flag) {
|
||
if (csysid == 0 && cstart == 0 && csize == 0)
|
||
memset(partp, 0, sizeof *partp);
|
||
else {
|
||
partp->mbrp_typ = csysid;
|
||
#if 0
|
||
checkcyl(cstart / dos_cylindersectors);
|
||
#endif
|
||
putlong(&partp->mbrp_start, cstart);
|
||
putlong(&partp->mbrp_size, csize);
|
||
dos(getlong(&partp->mbrp_start),
|
||
&partp->mbrp_scyl, &partp->mbrp_shd, &partp->mbrp_ssect);
|
||
dos(getlong(&partp->mbrp_start)
|
||
+ getlong(&partp->mbrp_size) - 1,
|
||
&partp->mbrp_ecyl, &partp->mbrp_ehd, &partp->mbrp_esect);
|
||
}
|
||
if (f_flag)
|
||
return;
|
||
}
|
||
|
||
printf("The data for partition %d is:\n", part);
|
||
print_part(part);
|
||
if (!u_flag || !yesno("Do you want to change it?"))
|
||
return;
|
||
|
||
do {
|
||
{
|
||
int sysid, start, size;
|
||
|
||
sysid = partp->mbrp_typ,
|
||
start = getlong(&partp->mbrp_start),
|
||
size = getlong(&partp->mbrp_size);
|
||
decimal("sysid", &sysid);
|
||
decimal("start", &start);
|
||
decimal("size", &size);
|
||
partp->mbrp_typ = sysid;
|
||
putlong(&partp->mbrp_start, start);
|
||
putlong(&partp->mbrp_size, size);
|
||
}
|
||
|
||
if (yesno("Explicitly specify beg/end address?")) {
|
||
int tsector, tcylinder, thead;
|
||
|
||
tcylinder = MBR_PCYL(partp->mbrp_scyl, partp->mbrp_ssect);
|
||
thead = partp->mbrp_shd;
|
||
tsector = MBR_PSECT(partp->mbrp_ssect);
|
||
decimal("beginning cylinder", &tcylinder);
|
||
#if 0
|
||
checkcyl(tcylinder);
|
||
#endif
|
||
decimal("beginning head", &thead);
|
||
decimal("beginning sector", &tsector);
|
||
partp->mbrp_scyl = DOSCYL(tcylinder);
|
||
partp->mbrp_shd = thead;
|
||
partp->mbrp_ssect = DOSSECT(tsector, tcylinder);
|
||
|
||
tcylinder = MBR_PCYL(partp->mbrp_ecyl, partp->mbrp_esect);
|
||
thead = partp->mbrp_ehd;
|
||
tsector = MBR_PSECT(partp->mbrp_esect);
|
||
decimal("ending cylinder", &tcylinder);
|
||
decimal("ending head", &thead);
|
||
decimal("ending sector", &tsector);
|
||
partp->mbrp_ecyl = DOSCYL(tcylinder);
|
||
partp->mbrp_ehd = thead;
|
||
partp->mbrp_esect = DOSSECT(tsector, tcylinder);
|
||
} else {
|
||
|
||
if (partp->mbrp_typ == 0
|
||
&& getlong(&partp->mbrp_start) == 0
|
||
&& getlong(&partp->mbrp_size) == 0)
|
||
memset(partp, 0, sizeof *partp);
|
||
else {
|
||
#if 0
|
||
checkcyl(getlong(&partp->mbrp_start)
|
||
/ dos_cylindersectors);
|
||
#endif
|
||
dos(getlong(&partp->mbrp_start), &partp->mbrp_scyl,
|
||
&partp->mbrp_shd, &partp->mbrp_ssect);
|
||
dos(getlong(&partp->mbrp_start)
|
||
+ getlong(&partp->mbrp_size) - 1,
|
||
&partp->mbrp_ecyl, &partp->mbrp_ehd,
|
||
&partp->mbrp_esect);
|
||
}
|
||
}
|
||
|
||
print_part(part);
|
||
} while (!yesno("Is this entry okay?"));
|
||
}
|
||
|
||
void
|
||
print_params()
|
||
{
|
||
|
||
if (sh_flag) {
|
||
printf ("DLCYL=%d\nDLHEAD=%d\nDLSEC=%d\nDLSIZE=%d\n",
|
||
cylinders, heads, sectors, disksectors);
|
||
printf ("BCYL=%d\nBHEAD=%d\nBSEC=%d\n",
|
||
dos_cylinders, dos_heads, dos_sectors);
|
||
return;
|
||
}
|
||
|
||
/* Not sh_flag */
|
||
printf("NetBSD disklabel disk geometry:\n");
|
||
printf("cylinders: %d heads: %d sectors/track: %d (%d sectors/cylinder)\n\n",
|
||
cylinders, heads, sectors, cylindersectors);
|
||
printf("BIOS disk geometry:\n");
|
||
printf("cylinders: %d heads: %d sectors/track: %d (%d sectors/cylinder)\n\n",
|
||
dos_cylinders, dos_heads, dos_sectors, dos_cylindersectors);
|
||
}
|
||
|
||
void
|
||
change_active(which)
|
||
int which;
|
||
{
|
||
struct mbr_partition *partp;
|
||
int part;
|
||
int active = 4;
|
||
|
||
partp = &mboot.parts[0];
|
||
|
||
if (a_flag && which != -1)
|
||
active = which;
|
||
else {
|
||
for (part = 0; part < NMBRPART; part++)
|
||
if (partp[part].mbrp_flag & ACTIVE)
|
||
active = part;
|
||
}
|
||
if (!f_flag) {
|
||
if (yesno("Do you want to change the active partition?")) {
|
||
printf ("Choosing 4 will make no partition active.\n");
|
||
do {
|
||
decimal("active partition", &active);
|
||
} while (!yesno("Are you happy with this choice?"));
|
||
} else
|
||
return;
|
||
} else
|
||
if (active != 4)
|
||
printf ("Making partition %d active.\n", active);
|
||
|
||
for (part = 0; part < NMBRPART; part++)
|
||
partp[part].mbrp_flag &= ~ACTIVE;
|
||
if (active < 4)
|
||
partp[active].mbrp_flag |= ACTIVE;
|
||
}
|
||
|
||
void
|
||
get_params_to_use()
|
||
{
|
||
if (b_flag) {
|
||
dos_cylinders = b_cyl;
|
||
dos_heads = b_head;
|
||
dos_sectors = b_sec;
|
||
dos_cylindersectors = dos_heads * dos_sectors;
|
||
return;
|
||
}
|
||
|
||
print_params();
|
||
if (yesno("Do you want to change our idea of what BIOS thinks?")) {
|
||
do {
|
||
decimal("BIOS's idea of #cylinders", &dos_cylinders);
|
||
decimal("BIOS's idea of #heads", &dos_heads);
|
||
decimal("BIOS's idea of #sectors", &dos_sectors);
|
||
dos_cylindersectors = dos_heads * dos_sectors;
|
||
print_params();
|
||
} while (!yesno("Are you happy with this choice?"));
|
||
}
|
||
}
|
||
|
||
/***********************************************\
|
||
* Change real numbers into strange dos numbers *
|
||
\***********************************************/
|
||
void
|
||
dos(sector, cylinderp, headp, sectorp)
|
||
int sector;
|
||
unsigned char *cylinderp, *headp, *sectorp;
|
||
{
|
||
int cylinder, head;
|
||
|
||
cylinder = sector / dos_cylindersectors;
|
||
|
||
sector -= cylinder * dos_cylindersectors;
|
||
|
||
head = sector / dos_sectors;
|
||
sector -= head * dos_sectors;
|
||
|
||
if (cylinder >= MAXCYL)
|
||
cylinder = MAXCYL - 1;
|
||
*cylinderp = DOSCYL(cylinder);
|
||
*headp = head;
|
||
*sectorp = DOSSECT(sector + 1, cylinder);
|
||
}
|
||
|
||
#if 0
|
||
void
|
||
checkcyl(cyl)
|
||
int cyl;
|
||
{
|
||
if (cyl >= MAXCYL)
|
||
warnx("partition start beyond BIOS limit");
|
||
}
|
||
#endif
|
||
|
||
int fd;
|
||
|
||
int
|
||
open_disk(u_flag)
|
||
int u_flag;
|
||
{
|
||
static char namebuf[MAXPATHLEN + 1];
|
||
struct stat st;
|
||
|
||
fd = opendisk(disk, u_flag ? O_RDWR : O_RDONLY, namebuf,
|
||
sizeof(namebuf), 0);
|
||
if (fd < 0) {
|
||
warn("%s", namebuf);
|
||
return (-1);
|
||
}
|
||
disk = namebuf;
|
||
if (fstat(fd, &st) == -1) {
|
||
close(fd);
|
||
warn("%s", disk);
|
||
return (-1);
|
||
}
|
||
if (!S_ISCHR(st.st_mode) && !S_ISREG(st.st_mode)) {
|
||
close(fd);
|
||
warnx("%s is not a character device or regular file", disk);
|
||
return (-1);
|
||
}
|
||
if (get_params() == -1) {
|
||
close(fd);
|
||
return (-1);
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
int
|
||
read_disk(sector, buf)
|
||
int sector;
|
||
void *buf;
|
||
{
|
||
|
||
if (lseek(fd, (off_t)(sector * 512), 0) == -1)
|
||
return (-1);
|
||
return (read(fd, buf, 512));
|
||
}
|
||
|
||
int
|
||
write_disk(sector, buf)
|
||
int sector;
|
||
void *buf;
|
||
{
|
||
|
||
if (lseek(fd, (off_t)(sector * 512), 0) == -1)
|
||
return (-1);
|
||
return (write(fd, buf, 512));
|
||
}
|
||
|
||
int
|
||
get_params()
|
||
{
|
||
|
||
if (ioctl(fd, DIOCGDINFO, &disklabel) == -1) {
|
||
warn("DIOCGDINFO");
|
||
return (-1);
|
||
}
|
||
|
||
dos_cylinders = cylinders = disklabel.d_ncylinders;
|
||
dos_heads = heads = disklabel.d_ntracks;
|
||
dos_sectors = sectors = disklabel.d_nsectors;
|
||
dos_cylindersectors = cylindersectors = heads * sectors;
|
||
disksectors = disklabel.d_secperunit;
|
||
|
||
return (0);
|
||
}
|
||
|
||
int
|
||
read_s0()
|
||
{
|
||
|
||
if (read_disk(0, mboot.bootinst) == -1) {
|
||
warn("can't read fdisk partition table");
|
||
return (-1);
|
||
}
|
||
if (getshort(&mboot.signature) != MBR_MAGIC) {
|
||
warnx("invalid fdisk partition table found");
|
||
return (-1);
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
int
|
||
write_s0()
|
||
{
|
||
int flag, i;
|
||
|
||
/*
|
||
* write enable label sector before write (if necessary),
|
||
* disable after writing.
|
||
* needed if the disklabel protected area also protects
|
||
* sector 0. (e.g. empty disk)
|
||
*/
|
||
flag = 1;
|
||
if (ioctl(fd, DIOCWLABEL, &flag) < 0)
|
||
warn("DIOCWLABEL");
|
||
if (write_disk(0, mboot.bootinst) == -1) {
|
||
warn("can't write fdisk partition table");
|
||
return -1;
|
||
}
|
||
for (i = bootsize; (i -= 0x200) > 0;)
|
||
if (write_disk(i / 0x200, bootcode + i) == -1) {
|
||
warn("can't write bootcode");
|
||
return -1;
|
||
}
|
||
flag = 0;
|
||
if (ioctl(fd, DIOCWLABEL, &flag) < 0)
|
||
warn("DIOCWLABEL");
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
yesno(str)
|
||
char *str;
|
||
{
|
||
int ch, first;
|
||
|
||
printf("%s [n] ", str);
|
||
|
||
first = ch = getchar();
|
||
while (ch != '\n' && ch != EOF)
|
||
ch = getchar();
|
||
return (first == 'y' || first == 'Y');
|
||
}
|
||
|
||
void
|
||
decimal(str, num)
|
||
char *str;
|
||
int *num;
|
||
{
|
||
int acc = 0;
|
||
char *cp;
|
||
|
||
for (;; printf("%s is not a valid decimal number.\n", lbuf)) {
|
||
printf("%s: [%d] ", str, *num);
|
||
|
||
fgets(lbuf, LBUF, stdin);
|
||
lbuf[strlen(lbuf)-1] = '\0';
|
||
cp = lbuf;
|
||
|
||
cp += strspn(cp, " \t");
|
||
if (*cp == '\0')
|
||
return;
|
||
|
||
if (!isdigit(*cp) && *cp != '-')
|
||
continue;
|
||
acc = strtol(lbuf, &cp, 10);
|
||
|
||
cp += strspn(cp, " \t");
|
||
if (*cp != '\0')
|
||
continue;
|
||
|
||
*num = acc;
|
||
return;
|
||
}
|
||
|
||
}
|
||
|
||
int
|
||
type_match(key, item)
|
||
const void *key, *item;
|
||
{
|
||
const int *typep = key;
|
||
const struct part_type *ptr = item;
|
||
|
||
if (*typep < ptr->type)
|
||
return (-1);
|
||
if (*typep > ptr->type)
|
||
return (1);
|
||
return (0);
|
||
}
|
||
|
||
char *
|
||
get_type(type)
|
||
int type;
|
||
{
|
||
struct part_type *ptr;
|
||
|
||
ptr = bsearch(&type, part_types,
|
||
sizeof(part_types) / sizeof(struct part_type),
|
||
sizeof(struct part_type), type_match);
|
||
if (ptr == 0)
|
||
return ("unknown");
|
||
return (ptr->name);
|
||
}
|