f5cf87f961
the offset of an extended sub-partition is the offset of the top-level extended partition, not the partition before it (this is annoying, and makes `clean' recursive mbr descent difficult). fixes PRs 11829 and 12677.
1426 lines
33 KiB
C
1426 lines
33 KiB
C
/* $NetBSD: fdisk.c,v 1.46 2001/04/16 10:47:15 lukem 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 1.46 2001/04/16 10:47:15 lukem 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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#ifndef _PATH_DEFDISK
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#define _PATH_DEFDISK "/dev/rwd0d"
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#endif
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const char *disk = _PATH_DEFDISK;
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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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#define PARTNAMESIZE 8 /* From mbr_bootsel.S */
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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][PARTNAMESIZE + 1];
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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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const 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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{0x4D, "QNX4.x"},
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{0x4E, "QNX4.x 2nd part"},
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{0x4F, "QNX4.x 3rd part"},
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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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{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(void);
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void print_s0(int);
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void print_part(int);
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void print_mbr_partition(struct mbr_partition *, off_t, off_t, int);
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int read_boot(const char *, void *, size_t);
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void init_sector0(int, int);
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void intuit_translated_geometry(void);
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void get_geometry(void);
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void get_diskname(const char *, char *, size_t);
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int try_heads(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(quad_t, quad_t, quad_t, quad_t, quad_t);
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void change_part(int, int, int, int);
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void print_params(void);
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void change_active(int);
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void get_params_to_use(void);
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void dos(int, unsigned char *, unsigned char *, unsigned char *);
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int open_disk(int);
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int read_disk(off_t, void *);
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int write_disk(off_t, void *);
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int get_params(void);
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int read_s0(off_t, struct mboot *);
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int write_s0(void);
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int yesno(const char *);
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void decimal(const char *, int *);
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int type_match(const void *, const void *);
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const char *get_type(int);
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int get_mapping(int, int *, int *, int *, unsigned long *);
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#ifdef __i386__
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void configure_bootsel(void);
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#endif
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static unsigned short getshort(void *);
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static void putshort(void *p, unsigned short);
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static unsigned long getlong(void *);
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static void putlong(void *, unsigned long);
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int main(int, char *[]);
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int
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main(int argc, 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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|
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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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|
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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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|
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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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|
|
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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|
|
|
if (read_s0(0, &mboot))
|
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init_sector0(sectors > 63 ? 63 : sectors, 1);
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|
|
|
#ifdef __i386__
|
|
get_geometry();
|
|
#else
|
|
intuit_translated_geometry();
|
|
#endif
|
|
|
|
|
|
if ((i_flag || u_flag) && (!f_flag || b_flag))
|
|
get_params_to_use();
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|
|
|
if (i_flag)
|
|
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++)
|
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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)
|
|
{
|
|
|
|
(void)fprintf(stderr, "usage: fdisk [-aiufBS] [-0|-1|-2|-3] "
|
|
"[-b cylinders/heads/sectors]\n"
|
|
" [-s id/start/size] [-c bootcode] "
|
|
"[device]\n");
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
print_s0(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 unsigned short
|
|
getshort(void *p)
|
|
{
|
|
unsigned char *cp = p;
|
|
|
|
return cp[0] | (cp[1] << 8);
|
|
}
|
|
|
|
static void
|
|
putshort(void *p, unsigned short l)
|
|
{
|
|
unsigned char *cp = p;
|
|
|
|
*cp++ = l;
|
|
*cp++ = l >> 8;
|
|
}
|
|
|
|
static unsigned long
|
|
getlong(void *p)
|
|
{
|
|
unsigned char *cp = p;
|
|
|
|
return cp[0] | (cp[1] << 8) | (cp[2] << 16) | (cp[3] << 24);
|
|
}
|
|
|
|
static void
|
|
putlong(void *p, unsigned long l)
|
|
{
|
|
unsigned char *cp = p;
|
|
|
|
*cp++ = l;
|
|
*cp++ = l >> 8;
|
|
*cp++ = l >> 16;
|
|
*cp++ = l >> 24;
|
|
}
|
|
|
|
void
|
|
print_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;
|
|
}
|
|
print_mbr_partition(partp, 0, 0, 0);
|
|
}
|
|
|
|
void
|
|
print_mbr_partition(struct mbr_partition *partp,
|
|
off_t offset, off_t exoffset, int indent)
|
|
{
|
|
int empty;
|
|
off_t start;
|
|
|
|
empty = (partp->mbrp_typ == 0);
|
|
if (MBR_IS_EXTENDED(partp->mbrp_typ))
|
|
start = (off_t)getlong(&partp->mbrp_start) + exoffset;
|
|
else
|
|
start = (off_t)getlong(&partp->mbrp_start) + offset;
|
|
if (empty) {
|
|
printf("<UNUSED>\n");
|
|
return;
|
|
}
|
|
printf("sysid %d (%s)\n",
|
|
partp->mbrp_typ, get_type(partp->mbrp_typ));
|
|
printf("%*s start %lld, size %ld (%ld MB), flag 0x%x\n",
|
|
indent, "",
|
|
start, getlong(&partp->mbrp_size),
|
|
getlong(&partp->mbrp_size) * 512 / (1024 * 1024), partp->mbrp_flag);
|
|
printf("%*s beg: cylinder %4d, head %3d, sector %2d\n",
|
|
indent, "",
|
|
MBR_PCYL(partp->mbrp_scyl, partp->mbrp_ssect),
|
|
partp->mbrp_shd, MBR_PSECT(partp->mbrp_ssect));
|
|
printf("%*s end: cylinder %4d, head %3d, sector %2d\n",
|
|
indent, "",
|
|
MBR_PCYL(partp->mbrp_ecyl, partp->mbrp_esect),
|
|
partp->mbrp_ehd, MBR_PSECT(partp->mbrp_esect));
|
|
|
|
if (MBR_IS_EXTENDED(partp->mbrp_typ)) {
|
|
struct mboot eboot;
|
|
int part;
|
|
|
|
printf("%*s Extended partition table:\n", indent, "");
|
|
if (read_s0(start, &eboot) == -1)
|
|
return;
|
|
indent += 8;
|
|
if (exoffset == 0)
|
|
exoffset = start;
|
|
for (part = 0; part < NMBRPART; part++) {
|
|
printf("%*s%d: ", indent, "", part);
|
|
print_mbr_partition(&eboot.parts[part],
|
|
start, exoffset, indent);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
read_boot(const char *name, void *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(int start, int 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(const char *fullname, char *diskname, size_t size)
|
|
{
|
|
const char *p, *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(void)
|
|
{
|
|
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(void)
|
|
{
|
|
struct mbr_bootsel *mbs =
|
|
(struct mbr_bootsel *)&mboot.bootinst[MBR_BOOTSELOFF];
|
|
int i, nused, firstpart = -1, item;
|
|
char desc[PARTNAMESIZE + 2], *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");
|
|
item = -1;
|
|
continue;
|
|
}
|
|
if (mboot.parts[item].mbrp_typ == 0) {
|
|
printf("The partition entry is unused\n");
|
|
item = -1;
|
|
continue;
|
|
}
|
|
|
|
printf("Enter descriptions (max. 8 characters): ");
|
|
rewind(stdin);
|
|
fgets(desc, PARTNAMESIZE + 1, stdin);
|
|
fpurge(stdin);
|
|
p = strchr(desc, '\n');
|
|
if (p != NULL)
|
|
*p = 0;
|
|
strcpy(&mbs->nametab[item][0], desc);
|
|
entry_changed = bootsel_modified = 1;
|
|
|
|
item++;
|
|
}
|
|
|
|
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(void)
|
|
{
|
|
|
|
int xcylinders = -1, xheads = -1, xsectors = -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) {
|
|
xheads = num / denom;
|
|
break;
|
|
}
|
|
}
|
|
if (xheads != -1)
|
|
break;
|
|
}
|
|
|
|
if (xheads == -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 * xheads + h1;
|
|
if (denom != 0 && num % denom == 0) {
|
|
xsectors = num / denom;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (xsectors == -1)
|
|
return;
|
|
|
|
/* Estimate the number of cylinders. */
|
|
xcylinders = disklabel.d_secperunit / xheads / xsectors;
|
|
|
|
/* 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 (xsectors * (c1 * xheads + h1) + s1 != a1)
|
|
return;
|
|
if (c1 >= xcylinders)
|
|
xcylinders = c1 + 1;
|
|
}
|
|
|
|
/* Everything checks out. Reset the geometry to use for further
|
|
* calculations. */
|
|
dos_cylinders = xcylinders;
|
|
dos_heads = xheads;
|
|
dos_sectors = xsectors;
|
|
dos_cylindersectors = xheads * xsectors;
|
|
}
|
|
|
|
/* 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(int i, int *cylinder, int *head, int *sector,
|
|
unsigned 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(int part, int csysid, int cstart, int 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(void)
|
|
{
|
|
|
|
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(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(void)
|
|
{
|
|
|
|
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(int sector, unsigned char *cylinderp, unsigned char *headp,
|
|
unsigned char *sectorp)
|
|
{
|
|
int cylinder, head;
|
|
int biosmaxsec;
|
|
|
|
biosmaxsec = dos_cylinders * dos_heads * dos_sectors - 1;
|
|
if (sector > biosmaxsec)
|
|
sector = biosmaxsec;
|
|
|
|
cylinder = sector / dos_cylindersectors;
|
|
|
|
sector -= cylinder * dos_cylindersectors;
|
|
|
|
head = sector / dos_sectors;
|
|
sector -= head * dos_sectors;
|
|
|
|
*cylinderp = DOSCYL(cylinder);
|
|
*headp = head;
|
|
*sectorp = DOSSECT(sector + 1, cylinder);
|
|
}
|
|
|
|
#if 0
|
|
void
|
|
checkcyl(int cyl)
|
|
{
|
|
|
|
if (cyl >= MAXCYL)
|
|
warnx("partition start beyond BIOS limit");
|
|
}
|
|
#endif
|
|
|
|
int fd = -1;
|
|
|
|
int
|
|
open_disk(int update)
|
|
{
|
|
static char namebuf[MAXPATHLEN + 1];
|
|
struct stat st;
|
|
|
|
fd = opendisk(disk, update ? 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(off_t sector, void *buf)
|
|
{
|
|
|
|
if (fd == -1)
|
|
errx(1, "read_disk(); fd == -1");
|
|
if (lseek(fd, sector * 512, 0) == -1)
|
|
return (-1);
|
|
return (read(fd, buf, 512));
|
|
}
|
|
|
|
int
|
|
write_disk(off_t sector, void *buf)
|
|
{
|
|
|
|
if (fd == -1)
|
|
errx(1, "write_disk(); fd == -1");
|
|
if (lseek(fd, sector * 512, 0) == -1)
|
|
return (-1);
|
|
return (write(fd, buf, 512));
|
|
}
|
|
|
|
int
|
|
get_params(void)
|
|
{
|
|
|
|
if (ioctl(fd, DIOCGDEFLABEL, &disklabel) == -1) {
|
|
warn("DIOCGDEFLABEL");
|
|
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(off_t offset, struct mboot *boot)
|
|
{
|
|
|
|
if (read_disk(offset, boot->bootinst) == -1) {
|
|
warn("can't read %s partition table",
|
|
offset ? "extended" : "fdisk");
|
|
return (-1);
|
|
}
|
|
if (getshort(&boot->signature) != MBR_MAGIC) {
|
|
warnx("invalid %s partition table found",
|
|
offset ? "extended" : "fdisk");
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
write_s0(void)
|
|
{
|
|
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(const 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(const 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(const void *key, const void *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);
|
|
}
|
|
|
|
const char *
|
|
get_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);
|
|
}
|