3199 lines
77 KiB
C
3199 lines
77 KiB
C
/* fdisk.c -- Partition table manipulator for Linux.
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*
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* Copyright (C) 1992 A. V. Le Blanc (LeBlanc@mcc.ac.uk)
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*
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* This program is free software. You can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation: either version 1 or
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* (at your option) any later version.
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*/
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#include <unistd.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 <fcntl.h>
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#include <ctype.h>
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#include <setjmp.h>
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#include <errno.h>
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#include <getopt.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <time.h>
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#include <limits.h>
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#include "xalloc.h"
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#include "nls.h"
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#include "rpmatch.h"
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#include "blkdev.h"
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#include "common.h"
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#include "mbsalign.h"
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#include "fdisk.h"
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#include "wholedisk.h"
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#include "pathnames.h"
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#include "canonicalize.h"
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#include "fdisksunlabel.h"
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#include "fdisksgilabel.h"
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#include "fdiskaixlabel.h"
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#include "fdiskmaclabel.h"
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#ifdef HAVE_LINUX_COMPILER_H
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#include <linux/compiler.h>
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#endif
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#ifdef HAVE_LINUX_BLKPG_H
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#include <linux/blkpg.h>
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#endif
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#ifdef HAVE_LIBBLKID
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#include <blkid.h>
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#endif
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#include "gpt.h"
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static void delete_partition(int i);
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#define hex_val(c) ({ \
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char _c = (c); \
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isdigit(_c) ? _c - '0' : \
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tolower(_c) + 10 - 'a'; \
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})
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#define LINE_LENGTH 800
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#define pt_offset(b, n) ((struct partition *)((b) + 0x1be + \
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(n) * sizeof(struct partition)))
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#define sector(s) ((s) & 0x3f)
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#define cylinder(s, c) ((c) | (((s) & 0xc0) << 2))
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#define hsc2sector(h,s,c) (sector(s) - 1 + sectors * \
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((h) + heads * cylinder(s,c)))
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#define set_hsc(h,s,c,sector) { \
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s = sector % sectors + 1; \
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sector /= sectors; \
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h = sector % heads; \
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sector /= heads; \
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c = sector & 0xff; \
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s |= (sector >> 2) & 0xc0; \
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}
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/* A valid partition table sector ends in 0x55 0xaa */
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static unsigned int
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part_table_flag(unsigned char *b) {
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return ((unsigned int) b[510]) + (((unsigned int) b[511]) << 8);
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}
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int
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valid_part_table_flag(unsigned char *b) {
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return (b[510] == 0x55 && b[511] == 0xaa);
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}
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static void
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write_part_table_flag(unsigned char *b) {
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b[510] = 0x55;
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b[511] = 0xaa;
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}
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/* start_sect and nr_sects are stored little endian on all machines */
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/* moreover, they are not aligned correctly */
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static void
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store4_little_endian(unsigned char *cp, unsigned int val) {
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cp[0] = (val & 0xff);
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cp[1] = ((val >> 8) & 0xff);
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cp[2] = ((val >> 16) & 0xff);
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cp[3] = ((val >> 24) & 0xff);
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}
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static unsigned int
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read4_little_endian(const unsigned char *cp) {
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return (unsigned int)(cp[0]) + ((unsigned int)(cp[1]) << 8)
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+ ((unsigned int)(cp[2]) << 16)
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+ ((unsigned int)(cp[3]) << 24);
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}
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static void
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set_start_sect(struct partition *p, unsigned int start_sect) {
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store4_little_endian(p->start4, start_sect);
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}
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unsigned long long
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get_start_sect(struct partition *p) {
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return read4_little_endian(p->start4);
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}
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static void
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set_nr_sects(struct partition *p, unsigned long long nr_sects) {
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store4_little_endian(p->size4, nr_sects);
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}
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unsigned long long
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get_nr_sects(struct partition *p) {
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return read4_little_endian(p->size4);
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}
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static ssize_t
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xread(int fd, void *buf, size_t count) {
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char *p = buf;
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ssize_t out = 0;
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ssize_t rv;
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while (count) {
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rv = read(fd, p, count);
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if (rv == -1) {
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if (errno == EINTR || errno == EAGAIN)
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continue;
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return out ? out : -1; /* Error */
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} else if (rv == 0) {
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return out; /* EOF */
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}
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p += rv;
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out += rv;
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count -= rv;
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}
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return out;
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}
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static unsigned int
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get_random_id(void) {
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int fd;
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unsigned int v;
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ssize_t rv = -1;
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struct timeval tv;
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fd = open("/dev/urandom", O_RDONLY);
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if (fd >= 0) {
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rv = xread(fd, &v, sizeof v);
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close(fd);
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}
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if (rv == sizeof v)
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return v;
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/* Fallback: sucks, but better than nothing */
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gettimeofday(&tv, NULL);
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return (unsigned int)(tv.tv_sec + (tv.tv_usec << 12) + getpid());
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}
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/* normally O_RDWR, -l option gives O_RDONLY */
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static int type_open = O_RDWR;
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/*
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* Raw disk label. For DOS-type partition tables the MBR,
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* with descriptions of the primary partitions.
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*/
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unsigned char *MBRbuffer;
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int MBRbuffer_changed;
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/*
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* per partition table entry data
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*
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* The four primary partitions have the same sectorbuffer (MBRbuffer)
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* and have NULL ext_pointer.
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* Each logical partition table entry has two pointers, one for the
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* partition and one link to the next one.
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*/
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struct pte {
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struct partition *part_table; /* points into sectorbuffer */
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struct partition *ext_pointer; /* points into sectorbuffer */
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char changed; /* boolean */
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unsigned long long offset; /* disk sector number */
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unsigned char *sectorbuffer; /* disk sector contents */
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} ptes[MAXIMUM_PARTS];
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char *disk_device, /* must be specified */
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*line_ptr, /* interactive input */
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line_buffer[LINE_LENGTH];
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int fd, /* the disk */
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ext_index, /* the prime extended partition */
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listing = 0, /* no aborts for fdisk -l */
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nowarn = 0, /* no warnings for fdisk -l/-s */
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dos_compatible_flag = 0, /* disabled by default */
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dos_changed = 0,
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partitions = 4; /* maximum partition + 1 */
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unsigned int user_cylinders, user_heads, user_sectors;
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unsigned int pt_heads, pt_sectors;
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unsigned int kern_heads, kern_sectors;
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unsigned long long sector_offset = 1, extended_offset = 0, sectors;
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unsigned int heads,
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cylinders,
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sector_size = DEFAULT_SECTOR_SIZE,
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user_set_sector_size = 0,
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units_per_sector = 1,
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display_in_cyl_units = 0;
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unsigned long long total_number_of_sectors; /* in logical sectors */
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unsigned long grain = DEFAULT_SECTOR_SIZE,
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io_size = DEFAULT_SECTOR_SIZE,
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min_io_size = DEFAULT_SECTOR_SIZE,
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phy_sector_size = DEFAULT_SECTOR_SIZE,
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alignment_offset;
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int has_topology;
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#define dos_label (!sun_label && !sgi_label && !aix_label && !mac_label && !osf_label)
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int sun_label = 0; /* looking at sun disklabel */
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int sgi_label = 0; /* looking at sgi disklabel */
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int aix_label = 0; /* looking at aix disklabel */
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int osf_label = 0; /* looking at OSF/1 disklabel */
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int mac_label = 0; /* looking at mac disklabel */
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int possibly_osf_label = 0;
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jmp_buf listingbuf;
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static void __attribute__ ((__noreturn__)) usage(FILE *out)
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{
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fprintf(out, _("Usage:\n"
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" %1$s [options] <disk> change partition table\n"
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" %1$s [options] -l <disk> list partition table(s)\n"
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" %1$s -s <partition> give partition size(s) in blocks\n"
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"\nOptions:\n"
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" -b <size> sector size (512, 1024, 2048 or 4096)\n"
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" -c[=<mode>] compatible mode: 'dos' or 'nondos' (default)\n"
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" -h print this help text\n"
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" -u[=<unit>] display units: 'cylinders' or 'sectors' (default)\n"
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" -v print program version\n"
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" -C <number> specify the number of cylinders\n"
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" -H <number> specify the number of heads\n"
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" -S <number> specify the number of sectors per track\n"
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"\n"), program_invocation_short_name);
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exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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void fatal(enum failure why) {
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if (listing) {
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close(fd);
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longjmp(listingbuf, 1);
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}
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switch (why) {
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case unable_to_open:
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err(EXIT_FAILURE, _("unable to open %s"), disk_device);
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case unable_to_read:
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err(EXIT_FAILURE, _("unable to read %s"), disk_device);
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case unable_to_seek:
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err(EXIT_FAILURE, _("unable to seek on %s"), disk_device);
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case unable_to_write:
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err(EXIT_FAILURE, _("unable to write %s"), disk_device);
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case ioctl_error:
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err(EXIT_FAILURE, _("BLKGETSIZE ioctl failed on %s"), disk_device);
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default:
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err(EXIT_FAILURE, _("fatal error"));
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}
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}
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static void
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seek_sector(int fd, unsigned long long secno) {
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off_t offset = (off_t) secno * sector_size;
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if (lseek(fd, offset, SEEK_SET) == (off_t) -1)
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fatal(unable_to_seek);
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}
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static void
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read_sector(int fd, unsigned long long secno, unsigned char *buf) {
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seek_sector(fd, secno);
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if (read(fd, buf, sector_size) != sector_size)
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fatal(unable_to_read);
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}
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static void
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write_sector(int fd, unsigned long long secno, unsigned char *buf) {
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seek_sector(fd, secno);
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if (write(fd, buf, sector_size) != sector_size)
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fatal(unable_to_write);
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}
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/* Allocate a buffer and read a partition table sector */
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static void
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read_pte(int fd, int pno, unsigned long long offset) {
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struct pte *pe = &ptes[pno];
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pe->offset = offset;
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pe->sectorbuffer = xmalloc(sector_size);
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read_sector(fd, offset, pe->sectorbuffer);
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pe->changed = 0;
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pe->part_table = pe->ext_pointer = NULL;
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}
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static unsigned long long
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get_partition_start(struct pte *pe) {
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return pe->offset + get_start_sect(pe->part_table);
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}
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struct partition *
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get_part_table(int i) {
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return ptes[i].part_table;
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}
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void
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set_all_unchanged(void) {
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int i;
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for (i = 0; i < MAXIMUM_PARTS; i++)
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ptes[i].changed = 0;
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}
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void
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set_changed(int i) {
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ptes[i].changed = 1;
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}
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static int
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is_garbage_table(void) {
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int i;
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for (i = 0; i < 4; i++) {
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struct pte *pe = &ptes[i];
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struct partition *p = pe->part_table;
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if (p->boot_ind != 0 && p->boot_ind != 0x80)
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return 1;
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}
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return 0;
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}
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/*
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* Avoid warning about DOS partitions when no DOS partition was changed.
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* Here a heuristic "is probably dos partition".
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* We might also do the opposite and warn in all cases except
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* for "is probably nondos partition".
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*/
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static int
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is_dos_partition(int t) {
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return (t == 1 || t == 4 || t == 6 ||
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t == 0x0b || t == 0x0c || t == 0x0e ||
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t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 ||
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t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 ||
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t == 0xc1 || t == 0xc4 || t == 0xc6);
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}
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static void
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menu(void) {
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if (sun_label) {
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puts(_("Command action"));
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puts(_(" a toggle a read only flag")); /* sun */
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puts(_(" b edit bsd disklabel"));
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puts(_(" c toggle the mountable flag")); /* sun */
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puts(_(" d delete a partition"));
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puts(_(" l list known partition types"));
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puts(_(" m print this menu"));
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puts(_(" n add a new partition"));
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puts(_(" o create a new empty DOS partition table"));
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puts(_(" p print the partition table"));
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puts(_(" q quit without saving changes"));
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puts(_(" s create a new empty Sun disklabel")); /* sun */
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puts(_(" t change a partition's system id"));
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puts(_(" u change display/entry units"));
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puts(_(" v verify the partition table"));
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puts(_(" w write table to disk and exit"));
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puts(_(" x extra functionality (experts only)"));
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}
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else if (sgi_label) {
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puts(_("Command action"));
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puts(_(" a select bootable partition")); /* sgi flavour */
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puts(_(" b edit bootfile entry")); /* sgi */
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puts(_(" c select sgi swap partition")); /* sgi flavour */
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puts(_(" d delete a partition"));
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puts(_(" l list known partition types"));
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puts(_(" m print this menu"));
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puts(_(" n add a new partition"));
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puts(_(" o create a new empty DOS partition table"));
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puts(_(" p print the partition table"));
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puts(_(" q quit without saving changes"));
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puts(_(" s create a new empty Sun disklabel")); /* sun */
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puts(_(" t change a partition's system id"));
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puts(_(" u change display/entry units"));
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puts(_(" v verify the partition table"));
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puts(_(" w write table to disk and exit"));
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}
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else if (aix_label || mac_label) {
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puts(_("Command action"));
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puts(_(" m print this menu"));
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puts(_(" o create a new empty DOS partition table"));
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puts(_(" q quit without saving changes"));
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puts(_(" s create a new empty Sun disklabel")); /* sun */
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}
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else {
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puts(_("Command action"));
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puts(_(" a toggle a bootable flag"));
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puts(_(" b edit bsd disklabel"));
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puts(_(" c toggle the dos compatibility flag"));
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puts(_(" d delete a partition"));
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puts(_(" l list known partition types"));
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puts(_(" m print this menu"));
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puts(_(" n add a new partition"));
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puts(_(" o create a new empty DOS partition table"));
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puts(_(" p print the partition table"));
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puts(_(" q quit without saving changes"));
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puts(_(" s create a new empty Sun disklabel")); /* sun */
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puts(_(" t change a partition's system id"));
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puts(_(" u change display/entry units"));
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puts(_(" v verify the partition table"));
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puts(_(" w write table to disk and exit"));
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puts(_(" x extra functionality (experts only)"));
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}
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}
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static void
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xmenu(void) {
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if (sun_label) {
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puts(_("Command action"));
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puts(_(" a change number of alternate cylinders")); /*sun*/
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puts(_(" c change number of cylinders"));
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puts(_(" d print the raw data in the partition table"));
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puts(_(" e change number of extra sectors per cylinder"));/*sun*/
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puts(_(" h change number of heads"));
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puts(_(" i change interleave factor")); /*sun*/
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puts(_(" o change rotation speed (rpm)")); /*sun*/
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puts(_(" m print this menu"));
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puts(_(" p print the partition table"));
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puts(_(" q quit without saving changes"));
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puts(_(" r return to main menu"));
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puts(_(" s change number of sectors/track"));
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puts(_(" v verify the partition table"));
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puts(_(" w write table to disk and exit"));
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puts(_(" y change number of physical cylinders")); /*sun*/
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}
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else if (sgi_label) {
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puts(_("Command action"));
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puts(_(" b move beginning of data in a partition")); /* !sun */
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puts(_(" c change number of cylinders"));
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puts(_(" d print the raw data in the partition table"));
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puts(_(" e list extended partitions")); /* !sun */
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puts(_(" g create an IRIX (SGI) partition table"));/* sgi */
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puts(_(" h change number of heads"));
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puts(_(" m print this menu"));
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puts(_(" p print the partition table"));
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puts(_(" q quit without saving changes"));
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puts(_(" r return to main menu"));
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puts(_(" s change number of sectors/track"));
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puts(_(" v verify the partition table"));
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puts(_(" w write table to disk and exit"));
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}
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else if (aix_label || mac_label) {
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puts(_("Command action"));
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puts(_(" b move beginning of data in a partition")); /* !sun */
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puts(_(" c change number of cylinders"));
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puts(_(" d print the raw data in the partition table"));
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puts(_(" e list extended partitions")); /* !sun */
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puts(_(" g create an IRIX (SGI) partition table"));/* sgi */
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puts(_(" h change number of heads"));
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puts(_(" m print this menu"));
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puts(_(" p print the partition table"));
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puts(_(" q quit without saving changes"));
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puts(_(" r return to main menu"));
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puts(_(" s change number of sectors/track"));
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puts(_(" v verify the partition table"));
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puts(_(" w write table to disk and exit"));
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}
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else {
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puts(_("Command action"));
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puts(_(" b move beginning of data in a partition")); /* !sun */
|
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puts(_(" c change number of cylinders"));
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puts(_(" d print the raw data in the partition table"));
|
|
puts(_(" e list extended partitions")); /* !sun */
|
|
puts(_(" f fix partition order")); /* !sun, !aix, !sgi */
|
|
puts(_(" g create an IRIX (SGI) partition table"));/* sgi */
|
|
puts(_(" h change number of heads"));
|
|
puts(_(" i change the disk identifier")); /* dos only */
|
|
puts(_(" m print this menu"));
|
|
puts(_(" p print the partition table"));
|
|
puts(_(" q quit without saving changes"));
|
|
puts(_(" r return to main menu"));
|
|
puts(_(" s change number of sectors/track"));
|
|
puts(_(" v verify the partition table"));
|
|
puts(_(" w write table to disk and exit"));
|
|
}
|
|
}
|
|
|
|
static int
|
|
get_sysid(int i) {
|
|
return (
|
|
sun_label ? sun_get_sysid(i) :
|
|
sgi_label ? sgi_get_sysid(i) :
|
|
ptes[i].part_table->sys_ind);
|
|
}
|
|
|
|
static struct systypes *
|
|
get_sys_types(void) {
|
|
return (
|
|
sun_label ? sun_sys_types :
|
|
sgi_label ? sgi_sys_types :
|
|
i386_sys_types);
|
|
}
|
|
|
|
char *partition_type(unsigned char type)
|
|
{
|
|
int i;
|
|
struct systypes *types = get_sys_types();
|
|
|
|
for (i=0; types[i].name; i++)
|
|
if (types[i].type == type)
|
|
return _(types[i].name);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void list_types(struct systypes *sys)
|
|
{
|
|
unsigned int last[4], done = 0, next = 0, size;
|
|
int i;
|
|
|
|
for (i = 0; sys[i].name; i++);
|
|
size = i;
|
|
|
|
for (i = 3; i >= 0; i--)
|
|
last[3 - i] = done += (size + i - done) / (i + 1);
|
|
i = done = 0;
|
|
|
|
do {
|
|
#define NAME_WIDTH 15
|
|
char name[NAME_WIDTH * MB_LEN_MAX];
|
|
size_t width = NAME_WIDTH;
|
|
|
|
printf("%c%2x ", i ? ' ' : '\n', sys[next].type);
|
|
size_t ret = mbsalign(_(sys[next].name), name, sizeof(name),
|
|
&width, MBS_ALIGN_LEFT, 0);
|
|
if (ret == (size_t)-1 || ret >= sizeof(name))
|
|
printf("%-15.15s", _(sys[next].name));
|
|
else
|
|
fputs(name, stdout);
|
|
|
|
next = last[i++] + done;
|
|
if (i > 3 || next >= last[i]) {
|
|
i = 0;
|
|
next = ++done;
|
|
}
|
|
} while (done < last[0]);
|
|
putchar('\n');
|
|
}
|
|
|
|
static int
|
|
is_cleared_partition(struct partition *p) {
|
|
return !(!p || p->boot_ind || p->head || p->sector || p->cyl ||
|
|
p->sys_ind || p->end_head || p->end_sector || p->end_cyl ||
|
|
get_start_sect(p) || get_nr_sects(p));
|
|
}
|
|
|
|
static void
|
|
clear_partition(struct partition *p) {
|
|
if (!p)
|
|
return;
|
|
p->boot_ind = 0;
|
|
p->head = 0;
|
|
p->sector = 0;
|
|
p->cyl = 0;
|
|
p->sys_ind = 0;
|
|
p->end_head = 0;
|
|
p->end_sector = 0;
|
|
p->end_cyl = 0;
|
|
set_start_sect(p,0);
|
|
set_nr_sects(p,0);
|
|
}
|
|
|
|
static void
|
|
set_partition(int i, int doext, unsigned long long start,
|
|
unsigned long long stop, int sysid) {
|
|
struct partition *p;
|
|
unsigned long long offset;
|
|
|
|
if (doext) {
|
|
p = ptes[i].ext_pointer;
|
|
offset = extended_offset;
|
|
} else {
|
|
p = ptes[i].part_table;
|
|
offset = ptes[i].offset;
|
|
}
|
|
p->boot_ind = 0;
|
|
p->sys_ind = sysid;
|
|
set_start_sect(p, start - offset);
|
|
set_nr_sects(p, stop - start + 1);
|
|
if (dos_compatible_flag && (start/(sectors*heads) > 1023))
|
|
start = heads*sectors*1024 - 1;
|
|
set_hsc(p->head, p->sector, p->cyl, start);
|
|
if (dos_compatible_flag && (stop/(sectors*heads) > 1023))
|
|
stop = heads*sectors*1024 - 1;
|
|
set_hsc(p->end_head, p->end_sector, p->end_cyl, stop);
|
|
ptes[i].changed = 1;
|
|
}
|
|
|
|
static int
|
|
test_c(char **m, char *mesg) {
|
|
int val = 0;
|
|
if (!*m)
|
|
fprintf(stderr, _("You must set"));
|
|
else {
|
|
fprintf(stderr, " %s", *m);
|
|
val = 1;
|
|
}
|
|
*m = mesg;
|
|
return val;
|
|
}
|
|
|
|
#define alignment_required (grain != sector_size)
|
|
|
|
static int
|
|
lba_is_aligned(unsigned long long lba)
|
|
{
|
|
unsigned int granularity = max(phy_sector_size, min_io_size);
|
|
unsigned long long offset = (lba * sector_size) & (granularity - 1);
|
|
|
|
return !((granularity + alignment_offset - offset) & (granularity - 1));
|
|
}
|
|
|
|
#define ALIGN_UP 1
|
|
#define ALIGN_DOWN 2
|
|
#define ALIGN_NEAREST 3
|
|
|
|
static unsigned long long
|
|
align_lba(unsigned long long lba, int direction)
|
|
{
|
|
unsigned long long res;
|
|
|
|
if (lba_is_aligned(lba))
|
|
res = lba;
|
|
else {
|
|
unsigned long long sects_in_phy = grain / sector_size;
|
|
|
|
if (lba < sector_offset)
|
|
res = sector_offset;
|
|
|
|
else if (direction == ALIGN_UP)
|
|
res = ((lba + sects_in_phy) / sects_in_phy) * sects_in_phy;
|
|
|
|
else if (direction == ALIGN_DOWN)
|
|
res = (lba / sects_in_phy) * sects_in_phy;
|
|
|
|
else /* ALIGN_NEAREST */
|
|
res = ((lba + sects_in_phy / 2) / sects_in_phy) * sects_in_phy;
|
|
|
|
if (alignment_offset && !lba_is_aligned(res) &&
|
|
res > alignment_offset / sector_size) {
|
|
/*
|
|
* apply alignment_offset
|
|
*
|
|
* On disk with alignment compensation physical blocks starts
|
|
* at LBA < 0 (usually LBA -1). It means we have to move LBA
|
|
* according the offset to be on the physical boundary.
|
|
*/
|
|
/* fprintf(stderr, "LBA: %llu apply alignment_offset\n", res); */
|
|
res -= (max(phy_sector_size, min_io_size) -
|
|
alignment_offset) / sector_size;
|
|
|
|
if (direction == ALIGN_UP && res < lba)
|
|
res += sects_in_phy;
|
|
}
|
|
}
|
|
|
|
/***
|
|
fprintf(stderr, "LBA %llu (%s) --align-(%s)--> %llu (%s)\n",
|
|
lba,
|
|
lba_is_aligned(lba) ? "OK" : "FALSE",
|
|
direction == ALIGN_UP ? "UP " :
|
|
direction == ALIGN_DOWN ? "DOWN " : "NEAREST",
|
|
res,
|
|
lba_is_aligned(res) ? "OK" : "FALSE");
|
|
***/
|
|
return res;
|
|
}
|
|
|
|
static unsigned long long
|
|
align_lba_in_range( unsigned long long lba,
|
|
unsigned long long start,
|
|
unsigned long long stop)
|
|
{
|
|
start = align_lba(start, ALIGN_UP);
|
|
stop = align_lba(stop, ALIGN_DOWN);
|
|
|
|
lba = align_lba(lba, ALIGN_NEAREST);
|
|
|
|
if (lba < start)
|
|
return start;
|
|
else if (lba > stop)
|
|
return stop;
|
|
return lba;
|
|
}
|
|
|
|
static int
|
|
warn_geometry(void) {
|
|
char *m = NULL;
|
|
int prev = 0;
|
|
|
|
if (sgi_label) /* cannot set cylinders etc anyway */
|
|
return 0;
|
|
if (!heads)
|
|
prev = test_c(&m, _("heads"));
|
|
if (!sectors)
|
|
prev = test_c(&m, _("sectors"));
|
|
if (!cylinders)
|
|
prev = test_c(&m, _("cylinders"));
|
|
if (!m)
|
|
return 0;
|
|
fprintf(stderr,
|
|
_("%s%s.\nYou can do this from the extra functions menu.\n"),
|
|
prev ? _(" and ") : " ", m);
|
|
return 1;
|
|
}
|
|
|
|
void update_units(void)
|
|
{
|
|
int cyl_units = heads * sectors;
|
|
|
|
if (display_in_cyl_units && cyl_units)
|
|
units_per_sector = cyl_units;
|
|
else
|
|
units_per_sector = 1; /* in sectors */
|
|
}
|
|
|
|
static void
|
|
warn_limits(void) {
|
|
if (total_number_of_sectors > UINT_MAX && !nowarn) {
|
|
unsigned long long bytes = total_number_of_sectors * sector_size;
|
|
int giga = bytes / 1000000000;
|
|
int hectogiga = (giga + 50) / 100;
|
|
|
|
fprintf(stderr, _("\n"
|
|
"WARNING: The size of this disk is %d.%d TB (%llu bytes).\n"
|
|
"DOS partition table format can not be used on drives for volumes\n"
|
|
"larger than (%llu bytes) for %d-byte sectors. Use parted(1) and GUID \n"
|
|
"partition table format (GPT).\n\n"),
|
|
hectogiga / 10, hectogiga % 10,
|
|
bytes,
|
|
(unsigned long long ) UINT_MAX * sector_size,
|
|
sector_size);
|
|
}
|
|
}
|
|
|
|
static void
|
|
warn_alignment(void) {
|
|
if (nowarn)
|
|
return;
|
|
|
|
if (sector_size != phy_sector_size)
|
|
fprintf(stderr, _("\n"
|
|
"The device presents a logical sector size that is smaller than\n"
|
|
"the physical sector size. Aligning to a physical sector (or optimal\n"
|
|
"I/O) size boundary is recommended, or performance may be impacted.\n"));
|
|
|
|
if (dos_compatible_flag)
|
|
fprintf(stderr, _("\n"
|
|
"WARNING: DOS-compatible mode is deprecated. It's strongly recommended to\n"
|
|
" switch off the mode (with command 'c')."));
|
|
|
|
if (display_in_cyl_units)
|
|
fprintf(stderr, _("\n"
|
|
"WARNING: cylinders as display units are deprecated. Use command 'u' to\n"
|
|
" change units to sectors.\n"));
|
|
|
|
}
|
|
|
|
static void
|
|
read_extended(int ext) {
|
|
int i;
|
|
struct pte *pex;
|
|
struct partition *p, *q;
|
|
|
|
ext_index = ext;
|
|
pex = &ptes[ext];
|
|
pex->ext_pointer = pex->part_table;
|
|
|
|
p = pex->part_table;
|
|
if (!get_start_sect(p)) {
|
|
fprintf(stderr,
|
|
_("Bad offset in primary extended partition\n"));
|
|
return;
|
|
}
|
|
|
|
while (IS_EXTENDED (p->sys_ind)) {
|
|
struct pte *pe = &ptes[partitions];
|
|
|
|
if (partitions >= MAXIMUM_PARTS) {
|
|
/* This is not a Linux restriction, but
|
|
this program uses arrays of size MAXIMUM_PARTS.
|
|
Do not try to `improve' this test. */
|
|
struct pte *pre = &ptes[partitions-1];
|
|
|
|
fprintf(stderr,
|
|
_("Warning: omitting partitions after #%d.\n"
|
|
"They will be deleted "
|
|
"if you save this partition table.\n"),
|
|
partitions);
|
|
clear_partition(pre->ext_pointer);
|
|
pre->changed = 1;
|
|
return;
|
|
}
|
|
|
|
read_pte(fd, partitions, extended_offset + get_start_sect(p));
|
|
|
|
if (!extended_offset)
|
|
extended_offset = get_start_sect(p);
|
|
|
|
q = p = pt_offset(pe->sectorbuffer, 0);
|
|
for (i = 0; i < 4; i++, p++) if (get_nr_sects(p)) {
|
|
if (IS_EXTENDED (p->sys_ind)) {
|
|
if (pe->ext_pointer)
|
|
fprintf(stderr,
|
|
_("Warning: extra link "
|
|
"pointer in partition table"
|
|
" %d\n"), partitions + 1);
|
|
else
|
|
pe->ext_pointer = p;
|
|
} else if (p->sys_ind) {
|
|
if (pe->part_table)
|
|
fprintf(stderr,
|
|
_("Warning: ignoring extra "
|
|
"data in partition table"
|
|
" %d\n"), partitions + 1);
|
|
else
|
|
pe->part_table = p;
|
|
}
|
|
}
|
|
|
|
/* very strange code here... */
|
|
if (!pe->part_table) {
|
|
if (q != pe->ext_pointer)
|
|
pe->part_table = q;
|
|
else
|
|
pe->part_table = q + 1;
|
|
}
|
|
if (!pe->ext_pointer) {
|
|
if (q != pe->part_table)
|
|
pe->ext_pointer = q;
|
|
else
|
|
pe->ext_pointer = q + 1;
|
|
}
|
|
|
|
p = pe->ext_pointer;
|
|
partitions++;
|
|
}
|
|
|
|
/* remove empty links */
|
|
remove:
|
|
for (i = 4; i < partitions; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
if (!get_nr_sects(pe->part_table) &&
|
|
(partitions > 5 || ptes[4].part_table->sys_ind)) {
|
|
printf(_("omitting empty partition (%d)\n"), i+1);
|
|
delete_partition(i);
|
|
goto remove; /* numbering changed */
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dos_write_mbr_id(unsigned char *b, unsigned int id) {
|
|
store4_little_endian(&b[440], id);
|
|
}
|
|
|
|
static unsigned int
|
|
dos_read_mbr_id(const unsigned char *b) {
|
|
return read4_little_endian(&b[440]);
|
|
}
|
|
|
|
static void
|
|
dos_print_mbr_id(void) {
|
|
printf(_("Disk identifier: 0x%08x\n"), dos_read_mbr_id(MBRbuffer));
|
|
}
|
|
|
|
static void
|
|
dos_set_mbr_id(void) {
|
|
unsigned long new_id;
|
|
char *ep;
|
|
char ps[64];
|
|
|
|
snprintf(ps, sizeof ps, _("New disk identifier (current 0x%08x): "),
|
|
dos_read_mbr_id(MBRbuffer));
|
|
|
|
if (read_chars(ps) == '\n')
|
|
return;
|
|
|
|
new_id = strtoul(line_ptr, &ep, 0);
|
|
if (*ep != '\n')
|
|
return;
|
|
|
|
dos_write_mbr_id(MBRbuffer, new_id);
|
|
MBRbuffer_changed = 1;
|
|
dos_print_mbr_id();
|
|
}
|
|
|
|
static void
|
|
create_doslabel(void) {
|
|
unsigned int id = get_random_id();
|
|
|
|
fprintf(stderr,
|
|
_("Building a new DOS disklabel with disk identifier 0x%08x.\n"
|
|
"Changes will remain in memory only, until you decide to write them.\n"
|
|
"After that, of course, the previous content won't be recoverable.\n\n"),
|
|
id);
|
|
sun_nolabel(); /* otherwise always recognised as sun */
|
|
sgi_nolabel(); /* otherwise always recognised as sgi */
|
|
mac_label = aix_label = osf_label = possibly_osf_label = 0;
|
|
partitions = 4;
|
|
|
|
/* Zero out the MBR buffer */
|
|
extended_offset = 0;
|
|
set_all_unchanged();
|
|
set_changed(0);
|
|
get_boot(create_empty_dos);
|
|
|
|
/* Generate an MBR ID for this disk */
|
|
dos_write_mbr_id(MBRbuffer, id);
|
|
|
|
/* Mark it bootable (unfortunately required) */
|
|
write_part_table_flag(MBRbuffer);
|
|
}
|
|
|
|
static void
|
|
get_topology(int fd) {
|
|
int arg;
|
|
#ifdef HAVE_LIBBLKID
|
|
blkid_probe pr;
|
|
|
|
pr = blkid_new_probe();
|
|
if (pr && blkid_probe_set_device(pr, fd, 0, 0) == 0) {
|
|
blkid_topology tp = blkid_probe_get_topology(pr);
|
|
|
|
if (tp) {
|
|
min_io_size = blkid_topology_get_minimum_io_size(tp);
|
|
io_size = blkid_topology_get_optimal_io_size(tp);
|
|
phy_sector_size = blkid_topology_get_physical_sector_size(tp);
|
|
alignment_offset = blkid_topology_get_alignment_offset(tp);
|
|
|
|
/* We assume that the device provides topology info if
|
|
* optimal_io_size is set or alignment_offset is set or
|
|
* minimum_io_size is not power of 2.
|
|
*
|
|
* See also update_sector_offset().
|
|
*/
|
|
if (io_size || alignment_offset ||
|
|
(min_io_size & (min_io_size - 1)))
|
|
has_topology = 1;
|
|
if (!io_size)
|
|
/* optimal IO is optional, default to minimum IO */
|
|
io_size = min_io_size;
|
|
}
|
|
}
|
|
blkid_free_probe(pr);
|
|
#endif
|
|
|
|
if (user_set_sector_size)
|
|
/* fdisk since 2.17 differentiate between logical and physical
|
|
* sectors size. For backward compatibility the
|
|
* fdisk -b <sectorsize>
|
|
* changes both, logical and physical sector size.
|
|
*/
|
|
phy_sector_size = sector_size;
|
|
|
|
else if (blkdev_get_sector_size(fd, &arg) == 0) {
|
|
sector_size = arg;
|
|
|
|
if (!phy_sector_size)
|
|
phy_sector_size = sector_size;
|
|
}
|
|
|
|
if (!min_io_size)
|
|
min_io_size = phy_sector_size;
|
|
if (!io_size)
|
|
io_size = min_io_size;
|
|
|
|
if (sector_size != DEFAULT_SECTOR_SIZE)
|
|
printf(_("Note: sector size is %d (not %d)\n"),
|
|
sector_size, DEFAULT_SECTOR_SIZE);
|
|
}
|
|
|
|
static void
|
|
get_kernel_geometry(int fd) {
|
|
#ifdef HDIO_GETGEO
|
|
struct hd_geometry geometry;
|
|
|
|
if (!ioctl(fd, HDIO_GETGEO, &geometry)) {
|
|
kern_heads = geometry.heads;
|
|
kern_sectors = geometry.sectors;
|
|
/* never use geometry.cylinders - it is truncated */
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
get_partition_table_geometry(void) {
|
|
unsigned char *bufp = MBRbuffer;
|
|
struct partition *p;
|
|
int i, h, s, hh, ss;
|
|
int first = 1;
|
|
int bad = 0;
|
|
|
|
if (!(valid_part_table_flag(bufp)))
|
|
return;
|
|
|
|
hh = ss = 0;
|
|
for (i=0; i<4; i++) {
|
|
p = pt_offset(bufp, i);
|
|
if (p->sys_ind != 0) {
|
|
h = p->end_head + 1;
|
|
s = (p->end_sector & 077);
|
|
if (first) {
|
|
hh = h;
|
|
ss = s;
|
|
first = 0;
|
|
} else if (hh != h || ss != s)
|
|
bad = 1;
|
|
}
|
|
}
|
|
|
|
if (!first && !bad) {
|
|
pt_heads = hh;
|
|
pt_sectors = ss;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Sets LBA of the first partition
|
|
*/
|
|
void
|
|
update_sector_offset(void)
|
|
{
|
|
grain = io_size;
|
|
|
|
if (dos_compatible_flag)
|
|
sector_offset = sectors; /* usually 63 sectors */
|
|
else {
|
|
/*
|
|
* Align the begin of partitions to:
|
|
*
|
|
* a) topology
|
|
* a2) alignment offset
|
|
* a1) or physical sector (minimal_io_size, aka "grain")
|
|
*
|
|
* b) or default to 1MiB (2048 sectrors, Windows Vista default)
|
|
*
|
|
* c) or for very small devices use 1 phy.sector
|
|
*/
|
|
unsigned long long x = 0;
|
|
|
|
if (has_topology) {
|
|
if (alignment_offset)
|
|
x = alignment_offset;
|
|
else if (io_size > 2048 * 512)
|
|
x = io_size;
|
|
}
|
|
/* default to 1MiB */
|
|
if (!x)
|
|
x = 2048 * 512;
|
|
|
|
sector_offset = x / sector_size;
|
|
|
|
/* don't use huge offset on small devices */
|
|
if (total_number_of_sectors <= sector_offset * 4)
|
|
sector_offset = phy_sector_size / sector_size;
|
|
|
|
/* use 1MiB grain always when possible */
|
|
if (grain < 2048 * 512)
|
|
grain = 2048 * 512;
|
|
|
|
/* don't use huge grain on small devices */
|
|
if (total_number_of_sectors <= (grain * 4 / sector_size))
|
|
grain = phy_sector_size;
|
|
}
|
|
}
|
|
|
|
void
|
|
get_geometry(int fd, struct geom *g) {
|
|
unsigned long long llcyls, nsects = 0;
|
|
|
|
get_topology(fd);
|
|
guess_device_type(fd);
|
|
heads = cylinders = sectors = 0;
|
|
kern_heads = kern_sectors = 0;
|
|
pt_heads = pt_sectors = 0;
|
|
|
|
get_kernel_geometry(fd);
|
|
get_partition_table_geometry();
|
|
|
|
heads = user_heads ? user_heads :
|
|
pt_heads ? pt_heads :
|
|
kern_heads ? kern_heads : 255;
|
|
sectors = user_sectors ? user_sectors :
|
|
pt_sectors ? pt_sectors :
|
|
kern_sectors ? kern_sectors : 63;
|
|
|
|
/* get number of 512-byte sectors, and convert it the real sectors */
|
|
if (blkdev_get_sectors(fd, &nsects) == 0)
|
|
total_number_of_sectors = (nsects / (sector_size >> 9));
|
|
|
|
update_sector_offset();
|
|
|
|
llcyls = total_number_of_sectors / (heads * sectors);
|
|
cylinders = llcyls;
|
|
if (cylinders != llcyls) /* truncated? */
|
|
cylinders = ~0;
|
|
if (!cylinders)
|
|
cylinders = user_cylinders;
|
|
|
|
if (g) {
|
|
g->heads = heads;
|
|
g->sectors = sectors;
|
|
g->cylinders = cylinders;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Please, always use allocated buffer if you want to cast the buffer to
|
|
* any struct -- cast non-allocated buffer to any struct is against
|
|
* strict-aliasing rules. --kzak 16-Oct-2009
|
|
*/
|
|
static void init_mbr_buffer(void)
|
|
{
|
|
if (MBRbuffer)
|
|
return;
|
|
|
|
MBRbuffer = xcalloc(1, MAX_SECTOR_SIZE);
|
|
}
|
|
|
|
void zeroize_mbr_buffer(void)
|
|
{
|
|
if (MBRbuffer)
|
|
memset(MBRbuffer, 0, MAX_SECTOR_SIZE);
|
|
}
|
|
|
|
/*
|
|
* Read MBR. Returns:
|
|
* -1: no 0xaa55 flag present (possibly entire disk BSD)
|
|
* 0: found or created label
|
|
* 1: I/O error
|
|
*/
|
|
int
|
|
get_boot(enum action what) {
|
|
int i;
|
|
|
|
partitions = 4;
|
|
ext_index = 0;
|
|
extended_offset = 0;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
pe->part_table = pt_offset(MBRbuffer, i);
|
|
pe->ext_pointer = NULL;
|
|
pe->offset = 0;
|
|
pe->sectorbuffer = MBRbuffer;
|
|
pe->changed = (what == create_empty_dos);
|
|
}
|
|
|
|
if (what == create_empty_sun && check_sun_label())
|
|
return 0;
|
|
|
|
memset(MBRbuffer, 0, 512);
|
|
|
|
if (what == create_empty_dos)
|
|
goto got_dos_table; /* skip reading disk */
|
|
|
|
if (what != try_only) {
|
|
if ((fd = open(disk_device, type_open)) < 0) {
|
|
if ((fd = open(disk_device, O_RDONLY)) < 0)
|
|
fatal(unable_to_open);
|
|
else
|
|
printf(_("You will not be able to write "
|
|
"the partition table.\n"));
|
|
}
|
|
}
|
|
|
|
if (512 != read(fd, MBRbuffer, 512)) {
|
|
if (what == try_only)
|
|
return 1;
|
|
fatal(unable_to_read);
|
|
}
|
|
|
|
get_geometry(fd, NULL);
|
|
|
|
update_units();
|
|
|
|
if (check_sun_label())
|
|
return 0;
|
|
|
|
if (check_sgi_label())
|
|
return 0;
|
|
|
|
if (check_aix_label())
|
|
return 0;
|
|
|
|
if (check_mac_label())
|
|
return 0;
|
|
|
|
if (check_osf_label()) {
|
|
possibly_osf_label = 1;
|
|
if (!valid_part_table_flag(MBRbuffer)) {
|
|
osf_label = 1;
|
|
return 0;
|
|
}
|
|
printf(_("This disk has both DOS and BSD magic.\n"
|
|
"Give the 'b' command to go to BSD mode.\n"));
|
|
}
|
|
|
|
got_dos_table:
|
|
|
|
if (!valid_part_table_flag(MBRbuffer)) {
|
|
switch(what) {
|
|
case fdisk:
|
|
fprintf(stderr,
|
|
_("Device contains neither a valid DOS "
|
|
"partition table, nor Sun, SGI or OSF "
|
|
"disklabel\n"));
|
|
#ifdef __sparc__
|
|
create_sunlabel();
|
|
#else
|
|
create_doslabel();
|
|
#endif
|
|
return 0;
|
|
case require:
|
|
return -1;
|
|
case try_only:
|
|
return -1;
|
|
case create_empty_dos:
|
|
case create_empty_sun:
|
|
break;
|
|
default:
|
|
fprintf(stderr, _("Internal error\n"));
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
if (IS_EXTENDED (pe->part_table->sys_ind)) {
|
|
if (partitions != 4)
|
|
fprintf(stderr, _("Ignoring extra extended "
|
|
"partition %d\n"), i + 1);
|
|
else
|
|
read_extended(i);
|
|
}
|
|
}
|
|
|
|
for (i = 3; i < partitions; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
if (!valid_part_table_flag(pe->sectorbuffer)) {
|
|
fprintf(stderr,
|
|
_("Warning: invalid flag 0x%04x of partition "
|
|
"table %d will be corrected by w(rite)\n"),
|
|
part_table_flag(pe->sectorbuffer), i + 1);
|
|
pe->changed = 1;
|
|
}
|
|
}
|
|
|
|
warn_geometry();
|
|
warn_limits();
|
|
warn_alignment();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int is_partition_table_changed(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < partitions; i++)
|
|
if (ptes[i].changed)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static void maybe_exit(int rc, int *asked)
|
|
{
|
|
char line[LINE_LENGTH];
|
|
|
|
putchar('\n');
|
|
if (asked)
|
|
*asked = 0;
|
|
|
|
if (is_partition_table_changed() || MBRbuffer_changed) {
|
|
fprintf(stderr, _("Do you really want to quit? "));
|
|
|
|
if (!fgets(line, LINE_LENGTH, stdin) || rpmatch(line) == 1)
|
|
exit(rc);
|
|
if (asked)
|
|
*asked = 1;
|
|
} else
|
|
exit(rc);
|
|
}
|
|
|
|
/* read line; return 0 or first char */
|
|
int
|
|
read_line(int *asked)
|
|
{
|
|
line_ptr = line_buffer;
|
|
if (!fgets(line_buffer, LINE_LENGTH, stdin)) {
|
|
maybe_exit(1, asked);
|
|
return 0;
|
|
}
|
|
if (asked)
|
|
*asked = 0;
|
|
while (*line_ptr && !isgraph(*line_ptr))
|
|
line_ptr++;
|
|
return *line_ptr;
|
|
}
|
|
|
|
char
|
|
read_char(char *mesg)
|
|
{
|
|
do {
|
|
fputs(mesg, stdout);
|
|
fflush (stdout); /* requested by niles@scyld.com */
|
|
} while (!read_line(NULL));
|
|
return *line_ptr;
|
|
}
|
|
|
|
char
|
|
read_chars(char *mesg)
|
|
{
|
|
int rc, asked = 0;
|
|
|
|
do {
|
|
fputs(mesg, stdout);
|
|
fflush (stdout); /* niles@scyld.com */
|
|
rc = read_line(&asked);
|
|
} while (asked);
|
|
|
|
if (!rc) {
|
|
*line_ptr = '\n';
|
|
line_ptr[1] = 0;
|
|
}
|
|
return *line_ptr;
|
|
}
|
|
|
|
int
|
|
read_hex(struct systypes *sys)
|
|
{
|
|
int hex;
|
|
|
|
while (1)
|
|
{
|
|
read_char(_("Hex code (type L to list codes): "));
|
|
if (tolower(*line_ptr) == 'l')
|
|
list_types(sys);
|
|
else if (isxdigit (*line_ptr))
|
|
{
|
|
hex = 0;
|
|
do
|
|
hex = hex << 4 | hex_val(*line_ptr++);
|
|
while (isxdigit(*line_ptr));
|
|
return hex;
|
|
}
|
|
}
|
|
}
|
|
|
|
static unsigned int
|
|
read_int_sx(unsigned int low, unsigned int dflt, unsigned int high,
|
|
unsigned int base, char *mesg, int *suffix)
|
|
{
|
|
unsigned int i;
|
|
int default_ok = 1;
|
|
static char *ms = NULL;
|
|
static int mslen = 0;
|
|
|
|
if (!ms || strlen(mesg)+100 > mslen) {
|
|
mslen = strlen(mesg)+200;
|
|
ms = xrealloc(ms,mslen);
|
|
}
|
|
|
|
if (dflt < low || dflt > high)
|
|
default_ok = 0;
|
|
|
|
if (default_ok)
|
|
snprintf(ms, mslen, _("%s (%u-%u, default %u): "),
|
|
mesg, low, high, dflt);
|
|
else
|
|
snprintf(ms, mslen, "%s (%u-%u): ",
|
|
mesg, low, high);
|
|
|
|
while (1) {
|
|
int use_default = default_ok;
|
|
|
|
/* ask question and read answer */
|
|
while (read_chars(ms) != '\n' && !isdigit(*line_ptr)
|
|
&& *line_ptr != '-' && *line_ptr != '+')
|
|
continue;
|
|
|
|
if (*line_ptr == '+' || *line_ptr == '-') {
|
|
int minus = (*line_ptr == '-');
|
|
int absolute = 0;
|
|
int suflen;
|
|
|
|
i = atoi(line_ptr+1);
|
|
|
|
while (isdigit(*++line_ptr))
|
|
use_default = 0;
|
|
|
|
suflen = strlen(line_ptr) - 1;
|
|
|
|
while(isspace(*(line_ptr + suflen)))
|
|
*(line_ptr + suflen--) = '\0';
|
|
|
|
if ((*line_ptr == 'C' || *line_ptr == 'c') &&
|
|
*(line_ptr + 1) == '\0') {
|
|
/*
|
|
* Cylinders
|
|
*/
|
|
if (!display_in_cyl_units)
|
|
i *= heads * sectors;
|
|
} else if (*line_ptr &&
|
|
*(line_ptr + 1) == 'B' &&
|
|
*(line_ptr + 2) == '\0') {
|
|
/*
|
|
* 10^N
|
|
*/
|
|
if (*line_ptr == 'K')
|
|
absolute = 1000;
|
|
else if (*line_ptr == 'M')
|
|
absolute = 1000000;
|
|
else if (*line_ptr == 'G')
|
|
absolute = 1000000000;
|
|
else
|
|
absolute = -1;
|
|
} else if (*line_ptr &&
|
|
*(line_ptr + 1) == '\0') {
|
|
/*
|
|
* 2^N
|
|
*/
|
|
if (*line_ptr == 'K')
|
|
absolute = 1 << 10;
|
|
else if (*line_ptr == 'M')
|
|
absolute = 1 << 20;
|
|
else if (*line_ptr == 'G')
|
|
absolute = 1 << 30;
|
|
else
|
|
absolute = -1;
|
|
} else if (*line_ptr != '\0')
|
|
absolute = -1;
|
|
|
|
if (absolute == -1) {
|
|
printf(_("Unsupported suffix: '%s'.\n"), line_ptr);
|
|
printf(_("Supported: 10^N: KB (KiloByte), MB (MegaByte), GB (GigaByte)\n"
|
|
" 2^N: K (KibiByte), M (MebiByte), G (GibiByte)\n"));
|
|
continue;
|
|
}
|
|
|
|
if (absolute && i) {
|
|
unsigned long long bytes;
|
|
unsigned long unit;
|
|
|
|
bytes = (unsigned long long) i * absolute;
|
|
unit = sector_size * units_per_sector;
|
|
bytes += unit/2; /* round */
|
|
bytes /= unit;
|
|
i = bytes;
|
|
if (suffix)
|
|
*suffix = absolute;
|
|
}
|
|
if (minus)
|
|
i = -i;
|
|
i += base;
|
|
} else {
|
|
i = atoi(line_ptr);
|
|
while (isdigit(*line_ptr)) {
|
|
line_ptr++;
|
|
use_default = 0;
|
|
}
|
|
}
|
|
if (use_default)
|
|
printf(_("Using default value %u\n"), i = dflt);
|
|
if (i >= low && i <= high)
|
|
break;
|
|
else
|
|
printf(_("Value out of range.\n"));
|
|
}
|
|
return i;
|
|
}
|
|
|
|
/*
|
|
* Print the message MESG, then read an integer in LOW..HIGH.
|
|
* If the user hits Enter, DFLT is returned, provided that is in LOW..HIGH.
|
|
* Answers like +10 are interpreted as offsets from BASE.
|
|
*
|
|
* There is no default if DFLT is not between LOW and HIGH.
|
|
*/
|
|
unsigned int
|
|
read_int(unsigned int low, unsigned int dflt, unsigned int high,
|
|
unsigned int base, char *mesg)
|
|
{
|
|
return read_int_sx(low, dflt, high, base, mesg, NULL);
|
|
}
|
|
|
|
|
|
int
|
|
get_partition_dflt(int warn, int max, int dflt) {
|
|
struct pte *pe;
|
|
int i;
|
|
|
|
i = read_int(1, dflt, max, 0, _("Partition number")) - 1;
|
|
pe = &ptes[i];
|
|
|
|
if (warn) {
|
|
if ((!sun_label && !sgi_label && !pe->part_table->sys_ind)
|
|
|| (sun_label &&
|
|
(!sunlabel->partitions[i].num_sectors ||
|
|
!sunlabel->part_tags[i].tag))
|
|
|| (sgi_label && (!sgi_get_num_sectors(i)))
|
|
)
|
|
fprintf(stderr,
|
|
_("Warning: partition %d has empty type\n"),
|
|
i+1);
|
|
}
|
|
return i;
|
|
}
|
|
|
|
int
|
|
get_partition(int warn, int max) {
|
|
return get_partition_dflt(warn, max, 0);
|
|
}
|
|
|
|
static int
|
|
get_existing_partition(int warn, int max) {
|
|
int pno = -1;
|
|
int i;
|
|
|
|
for (i = 0; i < max; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
struct partition *p = pe->part_table;
|
|
|
|
if (p && !is_cleared_partition(p)) {
|
|
if (pno >= 0)
|
|
goto not_unique;
|
|
pno = i;
|
|
}
|
|
}
|
|
if (pno >= 0) {
|
|
printf(_("Selected partition %d\n"), pno+1);
|
|
return pno;
|
|
}
|
|
printf(_("No partition is defined yet!\n"));
|
|
return -1;
|
|
|
|
not_unique:
|
|
return get_partition(warn, max);
|
|
}
|
|
|
|
static int
|
|
get_nonexisting_partition(int warn, int max) {
|
|
int pno = -1;
|
|
int i;
|
|
int dflt = 0;
|
|
|
|
for (i = 0; i < max; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
struct partition *p = pe->part_table;
|
|
|
|
if (p && is_cleared_partition(p)) {
|
|
if (pno >= 0) {
|
|
dflt = pno + 1;
|
|
goto not_unique;
|
|
}
|
|
pno = i;
|
|
}
|
|
}
|
|
if (pno >= 0) {
|
|
printf(_("Selected partition %d\n"), pno+1);
|
|
return pno;
|
|
}
|
|
printf(_("All primary partitions have been defined already!\n"));
|
|
return -1;
|
|
|
|
not_unique:
|
|
return get_partition_dflt(warn, max, dflt);
|
|
}
|
|
|
|
const char *
|
|
str_units(int n) { /* n==1: use singular */
|
|
if (n == 1)
|
|
return display_in_cyl_units ? _("cylinder") : _("sector");
|
|
else
|
|
return display_in_cyl_units ? _("cylinders") : _("sectors");
|
|
}
|
|
|
|
void change_units(void)
|
|
{
|
|
display_in_cyl_units = !display_in_cyl_units;
|
|
update_units();
|
|
|
|
if (display_in_cyl_units)
|
|
printf(_("Changing display/entry units to cylinders (DEPRECATED!)\n"));
|
|
else
|
|
printf(_("Changing display/entry units to sectors\n"));
|
|
}
|
|
|
|
static void
|
|
toggle_active(int i) {
|
|
struct pte *pe = &ptes[i];
|
|
struct partition *p = pe->part_table;
|
|
|
|
if (IS_EXTENDED (p->sys_ind) && !p->boot_ind)
|
|
fprintf(stderr,
|
|
_("WARNING: Partition %d is an extended partition\n"),
|
|
i + 1);
|
|
p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG);
|
|
pe->changed = 1;
|
|
}
|
|
|
|
static void
|
|
toggle_dos_compatibility_flag(void) {
|
|
dos_compatible_flag = ~dos_compatible_flag;
|
|
if (dos_compatible_flag)
|
|
printf(_("DOS Compatibility flag is set (DEPRECATED!)\n"));
|
|
else
|
|
printf(_("DOS Compatibility flag is not set\n"));
|
|
|
|
update_sector_offset();
|
|
}
|
|
|
|
static void
|
|
delete_partition(int i) {
|
|
struct pte *pe = &ptes[i];
|
|
struct partition *p = pe->part_table;
|
|
struct partition *q = pe->ext_pointer;
|
|
|
|
/* Note that for the fifth partition (i == 4) we don't actually
|
|
* decrement partitions.
|
|
*/
|
|
|
|
if (warn_geometry())
|
|
return; /* C/H/S not set */
|
|
pe->changed = 1;
|
|
|
|
if (sun_label) {
|
|
sun_delete_partition(i);
|
|
return;
|
|
}
|
|
|
|
if (sgi_label) {
|
|
sgi_delete_partition(i);
|
|
return;
|
|
}
|
|
|
|
if (i < 4) {
|
|
if (IS_EXTENDED (p->sys_ind) && i == ext_index) {
|
|
partitions = 4;
|
|
ptes[ext_index].ext_pointer = NULL;
|
|
extended_offset = 0;
|
|
}
|
|
clear_partition(p);
|
|
return;
|
|
}
|
|
|
|
if (!q->sys_ind && i > 4) {
|
|
/* the last one in the chain - just delete */
|
|
--partitions;
|
|
--i;
|
|
clear_partition(ptes[i].ext_pointer);
|
|
ptes[i].changed = 1;
|
|
} else {
|
|
/* not the last one - further ones will be moved down */
|
|
if (i > 4) {
|
|
/* delete this link in the chain */
|
|
p = ptes[i-1].ext_pointer;
|
|
*p = *q;
|
|
set_start_sect(p, get_start_sect(q));
|
|
set_nr_sects(p, get_nr_sects(q));
|
|
ptes[i-1].changed = 1;
|
|
} else if (partitions > 5) { /* 5 will be moved to 4 */
|
|
/* the first logical in a longer chain */
|
|
struct pte *pe = &ptes[5];
|
|
|
|
if (pe->part_table) /* prevent SEGFAULT */
|
|
set_start_sect(pe->part_table,
|
|
get_partition_start(pe) -
|
|
extended_offset);
|
|
pe->offset = extended_offset;
|
|
pe->changed = 1;
|
|
}
|
|
|
|
if (partitions > 5) {
|
|
partitions--;
|
|
while (i < partitions) {
|
|
ptes[i] = ptes[i+1];
|
|
i++;
|
|
}
|
|
} else
|
|
/* the only logical: clear only */
|
|
clear_partition(ptes[i].part_table);
|
|
}
|
|
}
|
|
|
|
static void
|
|
change_sysid(void) {
|
|
char *temp;
|
|
int i, sys, origsys;
|
|
struct partition *p;
|
|
|
|
/* If sgi_label then don't use get_existing_partition,
|
|
let the user select a partition, since get_existing_partition()
|
|
only works for Linux like partition tables. */
|
|
if (!sgi_label) {
|
|
i = get_existing_partition(0, partitions);
|
|
} else {
|
|
i = get_partition(0, partitions);
|
|
}
|
|
|
|
if (i == -1)
|
|
return;
|
|
p = ptes[i].part_table;
|
|
origsys = sys = get_sysid(i);
|
|
|
|
/* if changing types T to 0 is allowed, then
|
|
the reverse change must be allowed, too */
|
|
if (!sys && !sgi_label && !sun_label && !get_nr_sects(p))
|
|
printf(_("Partition %d does not exist yet!\n"), i + 1);
|
|
else while (1) {
|
|
sys = read_hex (get_sys_types());
|
|
|
|
if (!sys && !sgi_label && !sun_label) {
|
|
printf(_("Type 0 means free space to many systems\n"
|
|
"(but not to Linux). Having partitions of\n"
|
|
"type 0 is probably unwise. You can delete\n"
|
|
"a partition using the `d' command.\n"));
|
|
/* break; */
|
|
}
|
|
|
|
if (!sun_label && !sgi_label) {
|
|
if (IS_EXTENDED (sys) != IS_EXTENDED (p->sys_ind)) {
|
|
printf(_("You cannot change a partition into"
|
|
" an extended one or vice versa\n"
|
|
"Delete it first.\n"));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (sys < 256) {
|
|
if (sun_label && i == 2 && sys != SUN_TAG_BACKUP)
|
|
printf(_("Consider leaving partition 3 "
|
|
"as Whole disk (5),\n"
|
|
"as SunOS/Solaris expects it and "
|
|
"even Linux likes it.\n\n"));
|
|
if (sgi_label && ((i == 10 && sys != ENTIRE_DISK)
|
|
|| (i == 8 && sys != 0)))
|
|
printf(_("Consider leaving partition 9 "
|
|
"as volume header (0),\nand "
|
|
"partition 11 as entire volume (6), "
|
|
"as IRIX expects it.\n\n"));
|
|
if (sys == origsys)
|
|
break;
|
|
if (sun_label) {
|
|
ptes[i].changed = sun_change_sysid(i, sys);
|
|
} else
|
|
if (sgi_label) {
|
|
ptes[i].changed = sgi_change_sysid(i, sys);
|
|
} else {
|
|
p->sys_ind = sys;
|
|
ptes[i].changed = 1;
|
|
}
|
|
temp = partition_type(sys) ? : _("Unknown");
|
|
if (ptes[i].changed)
|
|
printf (_("Changed system type of partition %d "
|
|
"to %x (%s)\n"), i + 1, sys, temp);
|
|
else
|
|
printf (_("System type of partition %d is unchanged: "
|
|
"%x (%s)\n"), i + 1, sys, temp);
|
|
if (is_dos_partition(origsys) ||
|
|
is_dos_partition(sys))
|
|
dos_changed = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* check_consistency() and long2chs() added Sat Mar 6 12:28:16 1993,
|
|
* faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross,
|
|
* Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S.
|
|
* Lubkin Oct. 1991). */
|
|
|
|
static void
|
|
long2chs(unsigned long ls, unsigned int *c, unsigned int *h, unsigned int *s) {
|
|
int spc = heads * sectors;
|
|
|
|
*c = ls / spc;
|
|
ls = ls % spc;
|
|
*h = ls / sectors;
|
|
*s = ls % sectors + 1; /* sectors count from 1 */
|
|
}
|
|
|
|
static void check_consistency(struct partition *p, int partition) {
|
|
unsigned int pbc, pbh, pbs; /* physical beginning c, h, s */
|
|
unsigned int pec, peh, pes; /* physical ending c, h, s */
|
|
unsigned int lbc, lbh, lbs; /* logical beginning c, h, s */
|
|
unsigned int lec, leh, les; /* logical ending c, h, s */
|
|
|
|
if (!dos_compatible_flag)
|
|
return;
|
|
|
|
if (!heads || !sectors || (partition >= 4))
|
|
return; /* do not check extended partitions */
|
|
|
|
/* physical beginning c, h, s */
|
|
pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300);
|
|
pbh = p->head;
|
|
pbs = p->sector & 0x3f;
|
|
|
|
/* physical ending c, h, s */
|
|
pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300);
|
|
peh = p->end_head;
|
|
pes = p->end_sector & 0x3f;
|
|
|
|
/* compute logical beginning (c, h, s) */
|
|
long2chs(get_start_sect(p), &lbc, &lbh, &lbs);
|
|
|
|
/* compute logical ending (c, h, s) */
|
|
long2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les);
|
|
|
|
/* Same physical / logical beginning? */
|
|
if (cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
|
|
printf(_("Partition %d has different physical/logical "
|
|
"beginnings (non-Linux?):\n"), partition + 1);
|
|
printf(_(" phys=(%d, %d, %d) "), pbc, pbh, pbs);
|
|
printf(_("logical=(%d, %d, %d)\n"),lbc, lbh, lbs);
|
|
}
|
|
|
|
/* Same physical / logical ending? */
|
|
if (cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) {
|
|
printf(_("Partition %d has different physical/logical "
|
|
"endings:\n"), partition + 1);
|
|
printf(_(" phys=(%d, %d, %d) "), pec, peh, pes);
|
|
printf(_("logical=(%d, %d, %d)\n"),lec, leh, les);
|
|
}
|
|
|
|
#if 0
|
|
/* Beginning on cylinder boundary? */
|
|
if (pbh != !pbc || pbs != 1) {
|
|
printf(_("Partition %i does not start on cylinder "
|
|
"boundary:\n"), partition + 1);
|
|
printf(_(" phys=(%d, %d, %d) "), pbc, pbh, pbs);
|
|
printf(_("should be (%d, %d, 1)\n"), pbc, !pbc);
|
|
}
|
|
#endif
|
|
|
|
/* Ending on cylinder boundary? */
|
|
if (peh != (heads - 1) || pes != sectors) {
|
|
printf(_("Partition %i does not end on cylinder boundary.\n"),
|
|
partition + 1);
|
|
#if 0
|
|
printf(_(" phys=(%d, %d, %d) "), pec, peh, pes);
|
|
printf(_("should be (%d, %d, %d)\n"),
|
|
pec, heads - 1, sectors);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static void
|
|
check_alignment(unsigned long long lba, int partition)
|
|
{
|
|
if (!lba_is_aligned(lba))
|
|
printf(_("Partition %i does not start on physical sector boundary.\n"),
|
|
partition + 1);
|
|
}
|
|
|
|
static void
|
|
list_disk_geometry(void) {
|
|
unsigned long long bytes = total_number_of_sectors * sector_size;
|
|
long megabytes = bytes/1000000;
|
|
|
|
if (megabytes < 10000)
|
|
printf(_("\nDisk %s: %ld MB, %lld bytes\n"),
|
|
disk_device, megabytes, bytes);
|
|
else {
|
|
long hectomega = (megabytes + 50) / 100;
|
|
printf(_("\nDisk %s: %ld.%ld GB, %llu bytes\n"),
|
|
disk_device, hectomega / 10, hectomega % 10, bytes);
|
|
}
|
|
printf(_("%d heads, %llu sectors/track, %d cylinders"),
|
|
heads, sectors, cylinders);
|
|
if (units_per_sector == 1)
|
|
printf(_(", total %llu sectors"), total_number_of_sectors);
|
|
printf("\n");
|
|
printf(_("Units = %s of %d * %d = %d bytes\n"),
|
|
str_units(PLURAL),
|
|
units_per_sector, sector_size, units_per_sector * sector_size);
|
|
|
|
printf(_("Sector size (logical/physical): %u bytes / %lu bytes\n"),
|
|
sector_size, phy_sector_size);
|
|
printf(_("I/O size (minimum/optimal): %lu bytes / %lu bytes\n"),
|
|
min_io_size, io_size);
|
|
if (alignment_offset)
|
|
printf(_("Alignment offset: %lu bytes\n"), alignment_offset);
|
|
if (dos_label)
|
|
dos_print_mbr_id();
|
|
printf("\n");
|
|
}
|
|
|
|
/*
|
|
* Check whether partition entries are ordered by their starting positions.
|
|
* Return 0 if OK. Return i if partition i should have been earlier.
|
|
* Two separate checks: primary and logical partitions.
|
|
*/
|
|
static int
|
|
wrong_p_order(int *prev) {
|
|
struct pte *pe;
|
|
struct partition *p;
|
|
unsigned int last_p_start_pos = 0, p_start_pos;
|
|
int i, last_i = 0;
|
|
|
|
for (i = 0 ; i < partitions; i++) {
|
|
if (i == 4) {
|
|
last_i = 4;
|
|
last_p_start_pos = 0;
|
|
}
|
|
pe = &ptes[i];
|
|
if ((p = pe->part_table)->sys_ind) {
|
|
p_start_pos = get_partition_start(pe);
|
|
|
|
if (last_p_start_pos > p_start_pos) {
|
|
if (prev)
|
|
*prev = last_i;
|
|
return i;
|
|
}
|
|
|
|
last_p_start_pos = p_start_pos;
|
|
last_i = i;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Fix the chain of logicals.
|
|
* extended_offset is unchanged, the set of sectors used is unchanged
|
|
* The chain is sorted so that sectors increase, and so that
|
|
* starting sectors increase.
|
|
*
|
|
* After this it may still be that cfdisk doesnt like the table.
|
|
* (This is because cfdisk considers expanded parts, from link to
|
|
* end of partition, and these may still overlap.)
|
|
* Now
|
|
* sfdisk /dev/hda > ohda; sfdisk /dev/hda < ohda
|
|
* may help.
|
|
*/
|
|
static void
|
|
fix_chain_of_logicals(void) {
|
|
int j, oj, ojj, sj, sjj;
|
|
struct partition *pj,*pjj,tmp;
|
|
|
|
/* Stage 1: sort sectors but leave sector of part 4 */
|
|
/* (Its sector is the global extended_offset.) */
|
|
stage1:
|
|
for (j = 5; j < partitions-1; j++) {
|
|
oj = ptes[j].offset;
|
|
ojj = ptes[j+1].offset;
|
|
if (oj > ojj) {
|
|
ptes[j].offset = ojj;
|
|
ptes[j+1].offset = oj;
|
|
pj = ptes[j].part_table;
|
|
set_start_sect(pj, get_start_sect(pj)+oj-ojj);
|
|
pjj = ptes[j+1].part_table;
|
|
set_start_sect(pjj, get_start_sect(pjj)+ojj-oj);
|
|
set_start_sect(ptes[j-1].ext_pointer,
|
|
ojj-extended_offset);
|
|
set_start_sect(ptes[j].ext_pointer,
|
|
oj-extended_offset);
|
|
goto stage1;
|
|
}
|
|
}
|
|
|
|
/* Stage 2: sort starting sectors */
|
|
stage2:
|
|
for (j = 4; j < partitions-1; j++) {
|
|
pj = ptes[j].part_table;
|
|
pjj = ptes[j+1].part_table;
|
|
sj = get_start_sect(pj);
|
|
sjj = get_start_sect(pjj);
|
|
oj = ptes[j].offset;
|
|
ojj = ptes[j+1].offset;
|
|
if (oj+sj > ojj+sjj) {
|
|
tmp = *pj;
|
|
*pj = *pjj;
|
|
*pjj = tmp;
|
|
set_start_sect(pj, ojj+sjj-oj);
|
|
set_start_sect(pjj, oj+sj-ojj);
|
|
goto stage2;
|
|
}
|
|
}
|
|
|
|
/* Probably something was changed */
|
|
for (j = 4; j < partitions; j++)
|
|
ptes[j].changed = 1;
|
|
}
|
|
|
|
static void
|
|
fix_partition_table_order(void) {
|
|
struct pte *pei, *pek;
|
|
int i,k;
|
|
|
|
if (!wrong_p_order(NULL)) {
|
|
printf(_("Nothing to do. Ordering is correct already.\n\n"));
|
|
return;
|
|
}
|
|
|
|
while ((i = wrong_p_order(&k)) != 0 && i < 4) {
|
|
/* partition i should have come earlier, move it */
|
|
/* We have to move data in the MBR */
|
|
struct partition *pi, *pk, *pe, pbuf;
|
|
pei = &ptes[i];
|
|
pek = &ptes[k];
|
|
|
|
pe = pei->ext_pointer;
|
|
pei->ext_pointer = pek->ext_pointer;
|
|
pek->ext_pointer = pe;
|
|
|
|
pi = pei->part_table;
|
|
pk = pek->part_table;
|
|
|
|
memmove(&pbuf, pi, sizeof(struct partition));
|
|
memmove(pi, pk, sizeof(struct partition));
|
|
memmove(pk, &pbuf, sizeof(struct partition));
|
|
|
|
pei->changed = pek->changed = 1;
|
|
}
|
|
|
|
if (i)
|
|
fix_chain_of_logicals();
|
|
|
|
printf(_("Done.\n"));
|
|
|
|
}
|
|
|
|
static void
|
|
list_table(int xtra) {
|
|
struct partition *p;
|
|
char *type;
|
|
int i, w;
|
|
|
|
if (sun_label) {
|
|
sun_list_table(xtra);
|
|
return;
|
|
}
|
|
|
|
if (sgi_label) {
|
|
sgi_list_table(xtra);
|
|
return;
|
|
}
|
|
|
|
list_disk_geometry();
|
|
|
|
if (osf_label) {
|
|
xbsd_print_disklabel(xtra);
|
|
return;
|
|
}
|
|
|
|
if (is_garbage_table()) {
|
|
printf(_("This doesn't look like a partition table\n"
|
|
"Probably you selected the wrong device.\n\n"));
|
|
}
|
|
|
|
/* Heuristic: we list partition 3 of /dev/foo as /dev/foo3,
|
|
but if the device name ends in a digit, say /dev/foo1,
|
|
then the partition is called /dev/foo1p3. */
|
|
w = strlen(disk_device);
|
|
if (w && isdigit(disk_device[w-1]))
|
|
w++;
|
|
if (w < 5)
|
|
w = 5;
|
|
|
|
printf(_("%*s Boot Start End Blocks Id System\n"),
|
|
w+1, _("Device"));
|
|
|
|
for (i = 0; i < partitions; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
p = pe->part_table;
|
|
if (p && !is_cleared_partition(p)) {
|
|
unsigned int psects = get_nr_sects(p);
|
|
unsigned int pblocks = psects;
|
|
unsigned int podd = 0;
|
|
|
|
if (sector_size < 1024) {
|
|
pblocks /= (1024 / sector_size);
|
|
podd = psects % (1024 / sector_size);
|
|
}
|
|
if (sector_size > 1024)
|
|
pblocks *= (sector_size / 1024);
|
|
printf(
|
|
"%s %c %11lu %11lu %11lu%c %2x %s\n",
|
|
partname(disk_device, i+1, w+2),
|
|
/* boot flag */ !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG
|
|
? '*' : '?',
|
|
/* start */ (unsigned long) cround(get_partition_start(pe)),
|
|
/* end */ (unsigned long) cround(get_partition_start(pe) + psects
|
|
- (psects ? 1 : 0)),
|
|
/* odd flag on end */ (unsigned long) pblocks, podd ? '+' : ' ',
|
|
/* type id */ p->sys_ind,
|
|
/* type name */ (type = partition_type(p->sys_ind)) ?
|
|
type : _("Unknown"));
|
|
check_consistency(p, i);
|
|
check_alignment(get_partition_start(pe), i);
|
|
}
|
|
}
|
|
|
|
/* Is partition table in disk order? It need not be, but... */
|
|
/* partition table entries are not checked for correct order if this
|
|
is a sgi, sun or aix labeled disk... */
|
|
if (dos_label && wrong_p_order(NULL)) {
|
|
printf(_("\nPartition table entries are not in disk order\n"));
|
|
}
|
|
}
|
|
|
|
static void
|
|
x_list_table(int extend) {
|
|
struct pte *pe;
|
|
struct partition *p;
|
|
int i;
|
|
|
|
printf(_("\nDisk %s: %d heads, %llu sectors, %d cylinders\n\n"),
|
|
disk_device, heads, sectors, cylinders);
|
|
printf(_("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n"));
|
|
for (i = 0 ; i < partitions; i++) {
|
|
pe = &ptes[i];
|
|
p = (extend ? pe->ext_pointer : pe->part_table);
|
|
if (p != NULL) {
|
|
printf("%2d %02x%4d%4d%5d%4d%4d%5d%11lu%11lu %02x\n",
|
|
i + 1, p->boot_ind, p->head,
|
|
sector(p->sector),
|
|
cylinder(p->sector, p->cyl), p->end_head,
|
|
sector(p->end_sector),
|
|
cylinder(p->end_sector, p->end_cyl),
|
|
(unsigned long) get_start_sect(p),
|
|
(unsigned long) get_nr_sects(p), p->sys_ind);
|
|
if (p->sys_ind) {
|
|
check_consistency(p, i);
|
|
check_alignment(get_partition_start(pe), i);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
fill_bounds(unsigned long long *first, unsigned long long *last) {
|
|
int i;
|
|
struct pte *pe = &ptes[0];
|
|
struct partition *p;
|
|
|
|
for (i = 0; i < partitions; pe++,i++) {
|
|
p = pe->part_table;
|
|
if (!p->sys_ind || IS_EXTENDED (p->sys_ind)) {
|
|
first[i] = 0xffffffff;
|
|
last[i] = 0;
|
|
} else {
|
|
first[i] = get_partition_start(pe);
|
|
last[i] = first[i] + get_nr_sects(p) - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
check(int n, unsigned int h, unsigned int s, unsigned int c,
|
|
unsigned int start) {
|
|
unsigned int total, real_s, real_c;
|
|
|
|
real_s = sector(s) - 1;
|
|
real_c = cylinder(s, c);
|
|
total = (real_c * sectors + real_s) * heads + h;
|
|
if (!total)
|
|
fprintf(stderr, _("Warning: partition %d contains sector 0\n"), n);
|
|
if (h >= heads)
|
|
fprintf(stderr,
|
|
_("Partition %d: head %d greater than maximum %d\n"),
|
|
n, h + 1, heads);
|
|
if (real_s >= sectors)
|
|
fprintf(stderr, _("Partition %d: sector %d greater than "
|
|
"maximum %llu\n"), n, s, sectors);
|
|
if (real_c >= cylinders)
|
|
fprintf(stderr, _("Partitions %d: cylinder %d greater than "
|
|
"maximum %d\n"), n, real_c + 1, cylinders);
|
|
if (cylinders <= 1024 && start != total)
|
|
fprintf(stderr,
|
|
_("Partition %d: previous sectors %d disagrees with "
|
|
"total %d\n"), n, start, total);
|
|
}
|
|
|
|
static void
|
|
verify(void) {
|
|
int i, j;
|
|
unsigned long long total = 1;
|
|
unsigned long long n_sectors = total_number_of_sectors;
|
|
unsigned long long first[partitions], last[partitions];
|
|
struct partition *p;
|
|
|
|
if (warn_geometry())
|
|
return;
|
|
|
|
if (sun_label) {
|
|
verify_sun();
|
|
return;
|
|
}
|
|
|
|
if (sgi_label) {
|
|
verify_sgi(1);
|
|
return;
|
|
}
|
|
|
|
fill_bounds(first, last);
|
|
for (i = 0; i < partitions; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
p = pe->part_table;
|
|
if (p->sys_ind && !IS_EXTENDED (p->sys_ind)) {
|
|
check_consistency(p, i);
|
|
check_alignment(get_partition_start(pe), i);
|
|
if (get_partition_start(pe) < first[i])
|
|
printf(_("Warning: bad start-of-data in "
|
|
"partition %d\n"), i + 1);
|
|
check(i + 1, p->end_head, p->end_sector, p->end_cyl,
|
|
last[i]);
|
|
total += last[i] + 1 - first[i];
|
|
for (j = 0; j < i; j++)
|
|
if ((first[i] >= first[j] && first[i] <= last[j])
|
|
|| ((last[i] <= last[j] && last[i] >= first[j]))) {
|
|
printf(_("Warning: partition %d overlaps "
|
|
"partition %d.\n"), j + 1, i + 1);
|
|
total += first[i] >= first[j] ?
|
|
first[i] : first[j];
|
|
total -= last[i] <= last[j] ?
|
|
last[i] : last[j];
|
|
}
|
|
}
|
|
}
|
|
|
|
if (extended_offset) {
|
|
struct pte *pex = &ptes[ext_index];
|
|
unsigned long long e_last = get_start_sect(pex->part_table) +
|
|
get_nr_sects(pex->part_table) - 1;
|
|
|
|
for (i = 4; i < partitions; i++) {
|
|
total++;
|
|
p = ptes[i].part_table;
|
|
if (!p->sys_ind) {
|
|
if (i != 4 || i + 1 < partitions)
|
|
printf(_("Warning: partition %d "
|
|
"is empty\n"), i + 1);
|
|
}
|
|
else if (first[i] < extended_offset ||
|
|
last[i] > e_last)
|
|
printf(_("Logical partition %d not entirely in "
|
|
"partition %d\n"), i + 1, ext_index + 1);
|
|
}
|
|
}
|
|
|
|
if (total > n_sectors)
|
|
printf(_("Total allocated sectors %llu greater than the maximum"
|
|
" %llu\n"), total, n_sectors);
|
|
else if (total < n_sectors)
|
|
printf(_("Remaining %lld unallocated %d-byte sectors\n"),
|
|
n_sectors - total, sector_size);
|
|
}
|
|
|
|
static unsigned long long
|
|
get_unused_start(int part_n,
|
|
unsigned long long start,
|
|
unsigned long long first[],
|
|
unsigned long long last[])
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < partitions; i++) {
|
|
unsigned long long lastplusoff;
|
|
|
|
if (start == ptes[i].offset)
|
|
start += sector_offset;
|
|
lastplusoff = last[i] + ((part_n < 4) ? 0 : sector_offset);
|
|
if (start >= first[i] && start <= lastplusoff)
|
|
start = lastplusoff + 1;
|
|
}
|
|
|
|
return start;
|
|
}
|
|
|
|
static void
|
|
add_partition(int n, int sys) {
|
|
char mesg[256]; /* 48 does not suffice in Japanese */
|
|
int i, read = 0;
|
|
struct partition *p = ptes[n].part_table;
|
|
struct partition *q = ptes[ext_index].part_table;
|
|
long long llimit;
|
|
unsigned long long start, stop = 0, limit, temp,
|
|
first[partitions], last[partitions];
|
|
|
|
if (p && p->sys_ind) {
|
|
printf(_("Partition %d is already defined. Delete "
|
|
"it before re-adding it.\n"), n + 1);
|
|
return;
|
|
}
|
|
fill_bounds(first, last);
|
|
if (n < 4) {
|
|
start = sector_offset;
|
|
if (display_in_cyl_units || !total_number_of_sectors)
|
|
llimit = heads * sectors * cylinders - 1;
|
|
else
|
|
llimit = total_number_of_sectors - 1;
|
|
limit = llimit;
|
|
if (limit != llimit)
|
|
limit = 0x7fffffff;
|
|
if (extended_offset) {
|
|
first[ext_index] = extended_offset;
|
|
last[ext_index] = get_start_sect(q) +
|
|
get_nr_sects(q) - 1;
|
|
}
|
|
} else {
|
|
start = extended_offset + sector_offset;
|
|
limit = get_start_sect(q) + get_nr_sects(q) - 1;
|
|
}
|
|
if (display_in_cyl_units)
|
|
for (i = 0; i < partitions; i++)
|
|
first[i] = (cround(first[i]) - 1) * units_per_sector;
|
|
|
|
snprintf(mesg, sizeof(mesg), _("First %s"), str_units(SINGULAR));
|
|
do {
|
|
unsigned long long dflt, aligned;
|
|
|
|
temp = start;
|
|
dflt = start = get_unused_start(n, start, first, last);
|
|
|
|
/* the default sector should be aligned and unused */
|
|
do {
|
|
aligned = align_lba_in_range(dflt, dflt, limit);
|
|
dflt = get_unused_start(n, aligned, first, last);
|
|
} while (dflt != aligned && dflt > aligned && dflt < limit);
|
|
|
|
if (dflt >= limit)
|
|
dflt = start;
|
|
if (start > limit)
|
|
break;
|
|
if (start >= temp+units_per_sector && read) {
|
|
printf(_("Sector %llu is already allocated\n"), temp);
|
|
temp = start;
|
|
read = 0;
|
|
}
|
|
if (!read && start == temp) {
|
|
unsigned long long i = start;
|
|
|
|
start = read_int(cround(i), cround(dflt), cround(limit),
|
|
0, mesg);
|
|
if (display_in_cyl_units) {
|
|
start = (start - 1) * units_per_sector;
|
|
if (start < i) start = i;
|
|
}
|
|
read = 1;
|
|
}
|
|
} while (start != temp || !read);
|
|
if (n > 4) { /* NOT for fifth partition */
|
|
struct pte *pe = &ptes[n];
|
|
|
|
pe->offset = start - sector_offset;
|
|
if (pe->offset == extended_offset) { /* must be corrected */
|
|
pe->offset++;
|
|
if (sector_offset == 1)
|
|
start++;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < partitions; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
if (start < pe->offset && limit >= pe->offset)
|
|
limit = pe->offset - 1;
|
|
if (start < first[i] && limit >= first[i])
|
|
limit = first[i] - 1;
|
|
}
|
|
if (start > limit) {
|
|
printf(_("No free sectors available\n"));
|
|
if (n > 4)
|
|
partitions--;
|
|
return;
|
|
}
|
|
if (cround(start) == cround(limit)) {
|
|
stop = limit;
|
|
} else {
|
|
int sx = 0;
|
|
|
|
snprintf(mesg, sizeof(mesg),
|
|
_("Last %1$s, +%2$s or +size{K,M,G}"),
|
|
str_units(SINGULAR), str_units(PLURAL));
|
|
|
|
stop = read_int_sx(cround(start), cround(limit), cround(limit),
|
|
cround(start), mesg, &sx);
|
|
if (display_in_cyl_units) {
|
|
stop = stop * units_per_sector - 1;
|
|
if (stop >limit)
|
|
stop = limit;
|
|
}
|
|
|
|
if (sx && alignment_required) {
|
|
/* the last sector has not been exactly requested (but
|
|
* defined by +size{K,M,G} convention), so be smart
|
|
* and align the end of the partition. The next
|
|
* partition will start at phy.block boundary.
|
|
*/
|
|
stop = align_lba_in_range(stop, start, limit) - 1;
|
|
if (stop > limit)
|
|
stop = limit;
|
|
}
|
|
}
|
|
|
|
set_partition(n, 0, start, stop, sys);
|
|
if (n > 4)
|
|
set_partition(n - 1, 1, ptes[n].offset, stop, EXTENDED);
|
|
|
|
if (IS_EXTENDED (sys)) {
|
|
struct pte *pe4 = &ptes[4];
|
|
struct pte *pen = &ptes[n];
|
|
|
|
ext_index = n;
|
|
pen->ext_pointer = p;
|
|
pe4->offset = extended_offset = start;
|
|
pe4->sectorbuffer = xcalloc(1, sector_size);
|
|
pe4->part_table = pt_offset(pe4->sectorbuffer, 0);
|
|
pe4->ext_pointer = pe4->part_table + 1;
|
|
pe4->changed = 1;
|
|
partitions = 5;
|
|
}
|
|
}
|
|
|
|
static void
|
|
add_logical(void) {
|
|
if (partitions > 5 || ptes[4].part_table->sys_ind) {
|
|
struct pte *pe = &ptes[partitions];
|
|
|
|
pe->sectorbuffer = xcalloc(1, sector_size);
|
|
pe->part_table = pt_offset(pe->sectorbuffer, 0);
|
|
pe->ext_pointer = pe->part_table + 1;
|
|
pe->offset = 0;
|
|
pe->changed = 1;
|
|
partitions++;
|
|
}
|
|
printf(_("Adding logical partition %d\n"), partitions);
|
|
add_partition(partitions - 1, LINUX_NATIVE);
|
|
}
|
|
|
|
static void
|
|
new_partition(void) {
|
|
int i, free_primary = 0;
|
|
|
|
if (warn_geometry())
|
|
return;
|
|
|
|
if (sun_label) {
|
|
add_sun_partition(get_partition(0, partitions), LINUX_NATIVE);
|
|
return;
|
|
}
|
|
|
|
if (sgi_label) {
|
|
sgi_add_partition(get_partition(0, partitions), LINUX_NATIVE);
|
|
return;
|
|
}
|
|
|
|
if (aix_label) {
|
|
printf(_("\tSorry - this fdisk cannot handle AIX disk labels."
|
|
"\n\tIf you want to add DOS-type partitions, create"
|
|
"\n\ta new empty DOS partition table first. (Use o.)"
|
|
"\n\tWARNING: "
|
|
"This will destroy the present disk contents.\n"));
|
|
return;
|
|
}
|
|
|
|
if (mac_label) {
|
|
printf(_("\tSorry - this fdisk cannot handle Mac disk labels."
|
|
"\n\tIf you want to add DOS-type partitions, create"
|
|
"\n\ta new empty DOS partition table first. (Use o.)"
|
|
"\n\tWARNING: "
|
|
"This will destroy the present disk contents.\n"));
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < 4; i++)
|
|
free_primary += !ptes[i].part_table->sys_ind;
|
|
|
|
if (!free_primary && partitions >= MAXIMUM_PARTS) {
|
|
printf(_("The maximum number of partitions has been created\n"));
|
|
return;
|
|
}
|
|
|
|
if (!free_primary) {
|
|
if (extended_offset) {
|
|
printf(_("All primary partitions are in use\n"));
|
|
add_logical();
|
|
} else
|
|
printf(_("If you want to create more than four partitions, you must replace a\n"
|
|
"primary partition with an extended partition first.\n"));
|
|
} else if (partitions >= MAXIMUM_PARTS) {
|
|
printf(_("All logical partitions are in use\n"));
|
|
printf(_("Adding a primary partition\n"));
|
|
add_partition(get_partition(0, 4), LINUX_NATIVE);
|
|
} else {
|
|
char c, dflt, line[LINE_LENGTH];
|
|
|
|
dflt = (free_primary == 1 && !extended_offset) ? 'e' : 'p';
|
|
snprintf(line, sizeof(line),
|
|
_("Partition type:\n"
|
|
" p primary (%d primary, %d extended, %d free)\n"
|
|
"%s\n"
|
|
"Select (default %c): "),
|
|
4 - (extended_offset ? 1 : 0) - free_primary, extended_offset ? 1 : 0, free_primary,
|
|
extended_offset ? _(" l logical (numbered from 5)") : _(" e extended"),
|
|
dflt);
|
|
|
|
c = tolower(read_chars(line));
|
|
if (c == '\n') {
|
|
c = dflt;
|
|
printf(_("Using default response %c\n"), c);
|
|
}
|
|
if (c == 'p') {
|
|
int i = get_nonexisting_partition(0, 4);
|
|
if (i >= 0)
|
|
add_partition(i, LINUX_NATIVE);
|
|
return;
|
|
} else if (c == 'l' && extended_offset) {
|
|
add_logical();
|
|
return;
|
|
} else if (c == 'e' && !extended_offset) {
|
|
int i = get_nonexisting_partition(0, 4);
|
|
if (i >= 0)
|
|
add_partition(i, EXTENDED);
|
|
return;
|
|
} else
|
|
printf(_("Invalid partition type `%c'\n"), c);
|
|
}
|
|
}
|
|
|
|
static void
|
|
write_table(void) {
|
|
int i;
|
|
|
|
if (dos_label) {
|
|
/* MBR (primary partitions) */
|
|
if (!MBRbuffer_changed) {
|
|
for (i = 0; i < 4; i++)
|
|
if (ptes[i].changed)
|
|
MBRbuffer_changed = 1;
|
|
}
|
|
if (MBRbuffer_changed) {
|
|
write_part_table_flag(MBRbuffer);
|
|
write_sector(fd, 0, MBRbuffer);
|
|
}
|
|
/* EBR (logical partitions) */
|
|
for (i = 4; i < partitions; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
if (pe->changed) {
|
|
write_part_table_flag(pe->sectorbuffer);
|
|
write_sector(fd, pe->offset, pe->sectorbuffer);
|
|
}
|
|
}
|
|
}
|
|
else if (sgi_label) {
|
|
/* no test on change? the printf below might be mistaken */
|
|
sgi_write_table();
|
|
} else if (sun_label) {
|
|
int needw = 0;
|
|
|
|
for (i=0; i<8; i++)
|
|
if (ptes[i].changed)
|
|
needw = 1;
|
|
if (needw)
|
|
sun_write_table();
|
|
}
|
|
|
|
printf(_("The partition table has been altered!\n\n"));
|
|
reread_partition_table(1);
|
|
}
|
|
|
|
void
|
|
reread_partition_table(int leave) {
|
|
int i;
|
|
struct stat statbuf;
|
|
|
|
i = fstat(fd, &statbuf);
|
|
if (i == 0 && S_ISBLK(statbuf.st_mode)) {
|
|
sync();
|
|
#ifdef BLKRRPART
|
|
printf(_("Calling ioctl() to re-read partition table.\n"));
|
|
i = ioctl(fd, BLKRRPART);
|
|
#else
|
|
errno = ENOSYS;
|
|
i = 1;
|
|
#endif
|
|
}
|
|
|
|
if (i) {
|
|
printf(_("\nWARNING: Re-reading the partition table failed with error %d: %s.\n"
|
|
"The kernel still uses the old table. The new table will be used at\n"
|
|
"the next reboot or after you run partprobe(8) or kpartx(8)\n"),
|
|
errno, strerror(errno));
|
|
}
|
|
|
|
if (dos_changed)
|
|
printf(
|
|
_("\nWARNING: If you have created or modified any DOS 6.x\n"
|
|
"partitions, please see the fdisk manual page for additional\n"
|
|
"information.\n"));
|
|
|
|
if (leave) {
|
|
if (fsync(fd) || close(fd)) {
|
|
fprintf(stderr, _("\nError closing file\n"));
|
|
exit(1);
|
|
}
|
|
|
|
printf(_("Syncing disks.\n"));
|
|
sync();
|
|
exit(!!i);
|
|
}
|
|
}
|
|
|
|
#define MAX_PER_LINE 16
|
|
static void
|
|
print_buffer(unsigned char pbuffer[]) {
|
|
int i,
|
|
l;
|
|
|
|
for (i = 0, l = 0; i < sector_size; i++, l++) {
|
|
if (l == 0)
|
|
printf("0x%03X:", i);
|
|
printf(" %02X", pbuffer[i]);
|
|
if (l == MAX_PER_LINE - 1) {
|
|
printf("\n");
|
|
l = -1;
|
|
}
|
|
}
|
|
if (l > 0)
|
|
printf("\n");
|
|
printf("\n");
|
|
}
|
|
|
|
static void
|
|
print_raw(void) {
|
|
int i;
|
|
|
|
printf(_("Device: %s\n"), disk_device);
|
|
if (sun_label || sgi_label)
|
|
print_buffer(MBRbuffer);
|
|
else for (i = 3; i < partitions; i++)
|
|
print_buffer(ptes[i].sectorbuffer);
|
|
}
|
|
|
|
static void
|
|
move_begin(int i) {
|
|
struct pte *pe = &ptes[i];
|
|
struct partition *p = pe->part_table;
|
|
unsigned int new, free_start, curr_start, last;
|
|
int x;
|
|
|
|
if (warn_geometry())
|
|
return;
|
|
if (!p->sys_ind || !get_nr_sects(p) || IS_EXTENDED (p->sys_ind)) {
|
|
printf(_("Partition %d has no data area\n"), i + 1);
|
|
return;
|
|
}
|
|
|
|
/* the default start is at the second sector of the disk or at the
|
|
* second sector of the extended partition
|
|
*/
|
|
free_start = pe->offset ? pe->offset + 1 : 1;
|
|
|
|
curr_start = get_partition_start(pe);
|
|
|
|
/* look for a free space before the current start of the partition */
|
|
for (x = 0; x < partitions; x++) {
|
|
unsigned int end;
|
|
struct pte *prev_pe = &ptes[x];
|
|
struct partition *prev_p = prev_pe->part_table;
|
|
|
|
if (!prev_p)
|
|
continue;
|
|
end = get_partition_start(prev_pe) + get_nr_sects(prev_p);
|
|
|
|
if (!is_cleared_partition(prev_p) &&
|
|
end > free_start && end <= curr_start)
|
|
free_start = end;
|
|
}
|
|
|
|
last = get_partition_start(pe) + get_nr_sects(p) - 1;
|
|
|
|
new = read_int(free_start, curr_start, last, free_start,
|
|
_("New beginning of data")) - pe->offset;
|
|
|
|
if (new != get_nr_sects(p)) {
|
|
unsigned int sects = get_nr_sects(p) + get_start_sect(p) - new;
|
|
set_nr_sects(p, sects);
|
|
set_start_sect(p, new);
|
|
pe->changed = 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
xselect(void) {
|
|
char c;
|
|
|
|
while(1) {
|
|
putchar('\n');
|
|
c = tolower(read_char(_("Expert command (m for help): ")));
|
|
switch (c) {
|
|
case 'a':
|
|
if (sun_label)
|
|
sun_set_alt_cyl();
|
|
break;
|
|
case 'b':
|
|
if (dos_label)
|
|
move_begin(get_partition(0, partitions));
|
|
break;
|
|
case 'c':
|
|
user_cylinders = cylinders =
|
|
read_int(1, cylinders, 1048576, 0,
|
|
_("Number of cylinders"));
|
|
if (sun_label)
|
|
sun_set_ncyl(cylinders);
|
|
break;
|
|
case 'd':
|
|
print_raw();
|
|
break;
|
|
case 'e':
|
|
if (sgi_label)
|
|
sgi_set_xcyl();
|
|
else if (sun_label)
|
|
sun_set_xcyl();
|
|
else
|
|
if (dos_label)
|
|
x_list_table(1);
|
|
break;
|
|
case 'f':
|
|
if (dos_label)
|
|
fix_partition_table_order();
|
|
break;
|
|
case 'g':
|
|
create_sgilabel();
|
|
break;
|
|
case 'h':
|
|
user_heads = heads = read_int(1, heads, 256, 0,
|
|
_("Number of heads"));
|
|
update_units();
|
|
break;
|
|
case 'i':
|
|
if (sun_label)
|
|
sun_set_ilfact();
|
|
if (dos_label)
|
|
dos_set_mbr_id();
|
|
break;
|
|
case 'o':
|
|
if (sun_label)
|
|
sun_set_rspeed();
|
|
break;
|
|
case 'p':
|
|
if (sun_label)
|
|
list_table(1);
|
|
else
|
|
x_list_table(0);
|
|
break;
|
|
case 'q':
|
|
close(fd);
|
|
printf("\n");
|
|
exit(0);
|
|
case 'r':
|
|
return;
|
|
case 's':
|
|
user_sectors = sectors = read_int(1, sectors, 63, 0,
|
|
_("Number of sectors"));
|
|
if (dos_compatible_flag)
|
|
fprintf(stderr, _("Warning: setting "
|
|
"sector offset for DOS "
|
|
"compatiblity\n"));
|
|
update_sector_offset();
|
|
update_units();
|
|
break;
|
|
case 'v':
|
|
verify();
|
|
break;
|
|
case 'w':
|
|
write_table(); /* does not return */
|
|
break;
|
|
case 'y':
|
|
if (sun_label)
|
|
sun_set_pcylcount();
|
|
break;
|
|
default:
|
|
xmenu();
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
is_ide_cdrom_or_tape(char *device) {
|
|
FILE *procf;
|
|
char buf[100];
|
|
struct stat statbuf;
|
|
int is_ide = 0;
|
|
|
|
/* No device was given explicitly, and we are trying some
|
|
likely things. But opening /dev/hdc may produce errors like
|
|
"hdc: tray open or drive not ready"
|
|
if it happens to be a CD-ROM drive. It even happens that
|
|
the process hangs on the attempt to read a music CD.
|
|
So try to be careful. This only works since 2.1.73. */
|
|
|
|
if (strncmp("/dev/hd", device, 7))
|
|
return 0;
|
|
|
|
snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5);
|
|
procf = fopen(buf, "r");
|
|
if (procf != NULL && fgets(buf, sizeof(buf), procf))
|
|
is_ide = (!strncmp(buf, "cdrom", 5) ||
|
|
!strncmp(buf, "tape", 4));
|
|
else
|
|
/* Now when this proc file does not exist, skip the
|
|
device when it is read-only. */
|
|
if (stat(device, &statbuf) == 0)
|
|
is_ide = ((statbuf.st_mode & 0222) == 0);
|
|
|
|
if (procf)
|
|
fclose(procf);
|
|
return is_ide;
|
|
}
|
|
|
|
static void
|
|
gpt_warning(char *dev)
|
|
{
|
|
if (dev && gpt_probe_signature_devname(dev))
|
|
fprintf(stderr, _("\nWARNING: GPT (GUID Partition Table) detected on '%s'! "
|
|
"The util fdisk doesn't support GPT. Use GNU Parted.\n\n"), dev);
|
|
}
|
|
|
|
static void
|
|
try(char *device, int user_specified) {
|
|
int gb;
|
|
|
|
disk_device = device;
|
|
if (setjmp(listingbuf))
|
|
return;
|
|
if (!user_specified)
|
|
if (is_ide_cdrom_or_tape(device))
|
|
return;
|
|
gpt_warning(device);
|
|
if ((fd = open(disk_device, type_open)) >= 0) {
|
|
gb = get_boot(try_only);
|
|
if (gb > 0) { /* I/O error */
|
|
} else if (gb < 0) { /* no DOS signature */
|
|
list_disk_geometry();
|
|
if (!aix_label && !mac_label && btrydev(device) < 0)
|
|
fprintf(stderr,
|
|
_("Disk %s doesn't contain a valid "
|
|
"partition table\n"), device);
|
|
} else {
|
|
list_table(0);
|
|
}
|
|
close(fd);
|
|
} else {
|
|
/* Ignore other errors, since we try IDE
|
|
and SCSI hard disks which may not be
|
|
installed on the system. */
|
|
if (errno == EACCES) {
|
|
fprintf(stderr, _("Cannot open %s\n"), device);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* for fdisk -l:
|
|
* try all things in /proc/partitions that look like a full disk
|
|
*/
|
|
static void
|
|
tryprocpt(void) {
|
|
FILE *procpt;
|
|
char line[128], ptname[128], devname[256];
|
|
int ma, mi;
|
|
unsigned long long sz;
|
|
|
|
procpt = fopen(_PATH_PROC_PARTITIONS, "r");
|
|
if (procpt == NULL) {
|
|
fprintf(stderr, _("cannot open %s\n"), _PATH_PROC_PARTITIONS);
|
|
return;
|
|
}
|
|
|
|
while (fgets(line, sizeof(line), procpt)) {
|
|
if (sscanf (line, " %d %d %llu %128[^\n ]",
|
|
&ma, &mi, &sz, ptname) != 4)
|
|
continue;
|
|
snprintf(devname, sizeof(devname), "/dev/%s", ptname);
|
|
if (is_whole_disk(devname)) {
|
|
char *cn = canonicalize_path(devname);
|
|
if (cn) {
|
|
try(cn, 0);
|
|
free(cn);
|
|
}
|
|
}
|
|
}
|
|
fclose(procpt);
|
|
}
|
|
|
|
static void
|
|
dummy(int *kk) {}
|
|
|
|
static void
|
|
unknown_command(int c) {
|
|
printf(_("%c: unknown command\n"), c);
|
|
}
|
|
|
|
|
|
|
|
int
|
|
main(int argc, char **argv) {
|
|
int j, c;
|
|
int optl = 0, opts = 0;
|
|
|
|
setlocale(LC_ALL, "");
|
|
bindtextdomain(PACKAGE, LOCALEDIR);
|
|
textdomain(PACKAGE);
|
|
|
|
while ((c = getopt(argc, argv, "b:c::C:hH:lsS:u::vV")) != -1) {
|
|
switch (c) {
|
|
case 'b':
|
|
/* Ugly: this sector size is really per device,
|
|
so cannot be combined with multiple disks,
|
|
and te same goes for the C/H/S options.
|
|
*/
|
|
sector_size = atoi(optarg);
|
|
if (sector_size != 512 && sector_size != 1024 &&
|
|
sector_size != 2048 && sector_size != 4096)
|
|
usage(stderr);
|
|
sector_offset = 2;
|
|
user_set_sector_size = 1;
|
|
break;
|
|
case 'C':
|
|
user_cylinders = atoi(optarg);
|
|
break;
|
|
case 'c':
|
|
dos_compatible_flag = 0; /* default */
|
|
|
|
if (optarg && !strcmp(optarg, "=dos"))
|
|
dos_compatible_flag = ~0;
|
|
else if (optarg && strcmp(optarg, "=nondos"))
|
|
usage(stderr);
|
|
break;
|
|
case 'h':
|
|
usage(stdout);
|
|
break;
|
|
case 'H':
|
|
user_heads = atoi(optarg);
|
|
if (user_heads <= 0 || user_heads > 256)
|
|
user_heads = 0;
|
|
break;
|
|
case 'S':
|
|
user_sectors = atoi(optarg);
|
|
if (user_sectors <= 0 || user_sectors >= 64)
|
|
user_sectors = 0;
|
|
break;
|
|
case 'l':
|
|
optl = 1;
|
|
break;
|
|
case 's':
|
|
opts = 1;
|
|
break;
|
|
case 'u':
|
|
display_in_cyl_units = 0; /* default */
|
|
if (optarg && strcmp(optarg, "=cylinders") == 0)
|
|
display_in_cyl_units = !display_in_cyl_units;
|
|
else if (optarg && strcmp(optarg, "=sectors"))
|
|
usage(stderr);
|
|
break;
|
|
case 'V':
|
|
case 'v':
|
|
printf("fdisk (%s)\n", PACKAGE_STRING);
|
|
exit(0);
|
|
default:
|
|
usage(stderr);
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
printf(_("This kernel finds the sector size itself - "
|
|
"-b option ignored\n"));
|
|
#else
|
|
if (user_set_sector_size && argc-optind != 1)
|
|
printf(_("Warning: the -b (set sector size) option should"
|
|
" be used with one specified device\n"));
|
|
#endif
|
|
|
|
init_mbr_buffer();
|
|
|
|
if (optl) {
|
|
nowarn = 1;
|
|
type_open = O_RDONLY;
|
|
if (argc > optind) {
|
|
int k;
|
|
/* avoid gcc warning:
|
|
variable `k' might be clobbered by `longjmp' */
|
|
dummy(&k);
|
|
listing = 1;
|
|
for (k = optind; k < argc; k++)
|
|
try(argv[k], 1);
|
|
} else {
|
|
/* we no longer have default device names */
|
|
/* but we can use /proc/partitions instead */
|
|
tryprocpt();
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
if (opts) {
|
|
unsigned long long size;
|
|
|
|
nowarn = 1;
|
|
type_open = O_RDONLY;
|
|
|
|
opts = argc - optind;
|
|
if (opts <= 0)
|
|
usage(stderr);
|
|
|
|
for (j = optind; j < argc; j++) {
|
|
disk_device = argv[j];
|
|
if ((fd = open(disk_device, type_open)) < 0)
|
|
fatal(unable_to_open);
|
|
if (blkdev_get_sectors(fd, &size) == -1)
|
|
fatal(ioctl_error);
|
|
close(fd);
|
|
if (opts == 1)
|
|
printf("%llu\n", size/2);
|
|
else
|
|
printf("%s: %llu\n", argv[j], size/2);
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
if (argc-optind == 1)
|
|
disk_device = argv[optind];
|
|
else
|
|
usage(stderr);
|
|
|
|
gpt_warning(disk_device);
|
|
get_boot(fdisk);
|
|
|
|
if (osf_label) {
|
|
/* OSF label, and no DOS label */
|
|
printf(_("Detected an OSF/1 disklabel on %s, entering "
|
|
"disklabel mode.\n"),
|
|
disk_device);
|
|
bselect();
|
|
osf_label = 0;
|
|
/* If we return we may want to make an empty DOS label? */
|
|
}
|
|
|
|
while (1) {
|
|
putchar('\n');
|
|
c = tolower(read_char(_("Command (m for help): ")));
|
|
switch (c) {
|
|
case 'a':
|
|
if (dos_label)
|
|
toggle_active(get_partition(1, partitions));
|
|
else if (sun_label)
|
|
toggle_sunflags(get_partition(1, partitions),
|
|
SUN_FLAG_UNMNT);
|
|
else if (sgi_label)
|
|
sgi_set_bootpartition(
|
|
get_partition(1, partitions));
|
|
else
|
|
unknown_command(c);
|
|
break;
|
|
case 'b':
|
|
if (sgi_label) {
|
|
printf(_("\nThe current boot file is: %s\n"),
|
|
sgi_get_bootfile());
|
|
if (read_chars(_("Please enter the name of the "
|
|
"new boot file: ")) == '\n')
|
|
printf(_("Boot file unchanged\n"));
|
|
else
|
|
sgi_set_bootfile(line_ptr);
|
|
} else
|
|
bselect();
|
|
break;
|
|
case 'c':
|
|
if (dos_label)
|
|
toggle_dos_compatibility_flag();
|
|
else if (sun_label)
|
|
toggle_sunflags(get_partition(1, partitions),
|
|
SUN_FLAG_RONLY);
|
|
else if (sgi_label)
|
|
sgi_set_swappartition(
|
|
get_partition(1, partitions));
|
|
else
|
|
unknown_command(c);
|
|
break;
|
|
case 'd':
|
|
/* If sgi_label then don't use get_existing_partition,
|
|
let the user select a partition, since
|
|
get_existing_partition() only works for Linux-like
|
|
partition tables */
|
|
if (!sgi_label) {
|
|
j = get_existing_partition(1, partitions);
|
|
} else {
|
|
j = get_partition(1, partitions);
|
|
}
|
|
if (j >= 0)
|
|
delete_partition(j);
|
|
break;
|
|
case 'i':
|
|
if (sgi_label)
|
|
create_sgiinfo();
|
|
else
|
|
unknown_command(c);
|
|
case 'l':
|
|
list_types(get_sys_types());
|
|
break;
|
|
case 'm':
|
|
menu();
|
|
break;
|
|
case 'n':
|
|
new_partition();
|
|
break;
|
|
case 'o':
|
|
create_doslabel();
|
|
break;
|
|
case 'p':
|
|
list_table(0);
|
|
break;
|
|
case 'q':
|
|
close(fd);
|
|
printf("\n");
|
|
exit(0);
|
|
case 's':
|
|
create_sunlabel();
|
|
break;
|
|
case 't':
|
|
change_sysid();
|
|
break;
|
|
case 'u':
|
|
change_units();
|
|
break;
|
|
case 'v':
|
|
verify();
|
|
break;
|
|
case 'w':
|
|
write_table(); /* does not return */
|
|
break;
|
|
case 'x':
|
|
if (sgi_label) {
|
|
fprintf(stderr,
|
|
_("\n\tSorry, no experts menu for SGI "
|
|
"partition tables available.\n\n"));
|
|
} else
|
|
xselect();
|
|
break;
|
|
default:
|
|
unknown_command(c);
|
|
menu();
|
|
}
|
|
}
|
|
return 0;
|
|
}
|