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3042 lines
73 KiB
C
3042 lines
73 KiB
C
/* vi: set sw=4 ts=4: */
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/* 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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* Copyright (C) 2001,2002 Vladimir Oleynik <dzo@simtreas.ru> (initial bb port)
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*
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* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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*/
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#include <assert.h> /* assert */
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#include "busybox.h"
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#define _(x) x
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/* Looks like someone forgot to add this to config system */
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#ifndef ENABLE_FEATURE_FDISK_BLKSIZE
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# define ENABLE_FEATURE_FDISK_BLKSIZE 0
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# define USE_FEATURE_FDISK_BLKSIZE(a)
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#endif
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#define DEFAULT_SECTOR_SIZE 512
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#define MAX_SECTOR_SIZE 2048
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#define SECTOR_SIZE 512 /* still used in osf/sgi/sun code */
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#define MAXIMUM_PARTS 60
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#define ACTIVE_FLAG 0x80
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#define EXTENDED 0x05
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#define WIN98_EXTENDED 0x0f
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#define LINUX_PARTITION 0x81
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#define LINUX_SWAP 0x82
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#define LINUX_NATIVE 0x83
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#define LINUX_EXTENDED 0x85
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#define LINUX_LVM 0x8e
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#define LINUX_RAID 0xfd
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#define IS_EXTENDED(i) \
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((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED)
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#define SIZE(a) (sizeof(a)/sizeof((a)[0]))
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#define cround(n) (display_in_cyl_units ? ((n)/units_per_sector)+1 : (n))
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#define scround(x) (((x)+units_per_sector-1)/units_per_sector)
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struct hd_geometry {
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unsigned char heads;
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unsigned char sectors;
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unsigned short cylinders;
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unsigned long start;
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};
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#define HDIO_GETGEO 0x0301 /* get device geometry */
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struct systypes {
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const char *name;
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};
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static unsigned sector_size = DEFAULT_SECTOR_SIZE;
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static unsigned user_set_sector_size;
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static unsigned sector_offset = 1;
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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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#if (MAX_SECTOR_SIZE) > (BUFSIZ+1)
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static char MBRbuffer[MAX_SECTOR_SIZE];
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#else
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# define MBRbuffer bb_common_bufsiz1
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#endif
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#if ENABLE_FEATURE_OSF_LABEL
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static int possibly_osf_label;
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#endif
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static unsigned heads, sectors, cylinders;
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static void update_units(void);
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/*
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* return partition name - uses static storage unless buf is supplied
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*/
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static const char *
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partname(const char *dev, int pno, int lth)
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{
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static char buffer[80];
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const char *p;
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int w, wp;
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int bufsiz;
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char *bufp;
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bufp = buffer;
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bufsiz = sizeof(buffer);
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w = strlen(dev);
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p = "";
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if (isdigit(dev[w-1]))
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p = "p";
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/* devfs kludge - note: fdisk partition names are not supposed
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to equal kernel names, so there is no reason to do this */
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if (strcmp(dev + w - 4, "disc") == 0) {
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w -= 4;
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p = "part";
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}
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wp = strlen(p);
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if (lth) {
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snprintf(bufp, bufsiz, "%*.*s%s%-2u",
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lth-wp-2, w, dev, p, pno);
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} else {
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snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno);
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}
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return bufp;
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}
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struct partition {
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unsigned char boot_ind; /* 0x80 - active */
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unsigned char head; /* starting head */
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unsigned char sector; /* starting sector */
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unsigned char cyl; /* starting cylinder */
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unsigned char sys_ind; /* What partition type */
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unsigned char end_head; /* end head */
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unsigned char end_sector; /* end sector */
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unsigned char end_cyl; /* end cylinder */
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unsigned char start4[4]; /* starting sector counting from 0 */
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unsigned char size4[4]; /* nr of sectors in partition */
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} ATTRIBUTE_PACKED;
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enum failure {
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ioctl_error, unable_to_open, unable_to_read, unable_to_seek,
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unable_to_write
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};
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enum label_type {
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label_dos, label_sun, label_sgi, label_aix, label_osf
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};
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#define LABEL_IS_DOS (label_dos == current_label_type)
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#if ENABLE_FEATURE_SUN_LABEL
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#define LABEL_IS_SUN (label_sun == current_label_type)
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#define STATIC_SUN static
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#else
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#define LABEL_IS_SUN 0
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#define STATIC_SUN extern
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#endif
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#if ENABLE_FEATURE_SGI_LABEL
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#define LABEL_IS_SGI (label_sgi == current_label_type)
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#define STATIC_SGI static
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#else
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#define LABEL_IS_SGI 0
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#define STATIC_SGI extern
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#endif
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#if ENABLE_FEATURE_AIX_LABEL
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#define LABEL_IS_AIX (label_aix == current_label_type)
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#define STATIC_AIX static
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#else
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#define LABEL_IS_AIX 0
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#define STATIC_AIX extern
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#endif
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#if ENABLE_FEATURE_OSF_LABEL
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#define LABEL_IS_OSF (label_osf == current_label_type)
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#define STATIC_OSF static
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#else
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#define LABEL_IS_OSF 0
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#define STATIC_OSF extern
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#endif
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enum action { fdisk, require, try_only, create_empty_dos, create_empty_sun };
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static enum label_type current_label_type;
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static const char *disk_device;
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static int fd; /* the disk */
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static int partitions = 4; /* maximum partition + 1 */
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static int display_in_cyl_units = 1;
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static unsigned units_per_sector = 1;
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#if ENABLE_FEATURE_FDISK_WRITABLE
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static void change_units(void);
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static void reread_partition_table(int leave);
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static void delete_partition(int i);
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static int get_partition(int warn, int max);
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static void list_types(const struct systypes *sys);
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static unsigned read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, char *mesg);
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#endif
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static const char *partition_type(unsigned char type);
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static void fdisk_fatal(enum failure why) ATTRIBUTE_NORETURN;
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static void get_geometry(void);
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static int get_boot(enum action what);
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#define PLURAL 0
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#define SINGULAR 1
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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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static unsigned get_start_sect(const struct partition *p);
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static unsigned get_nr_sects(const struct partition *p);
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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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static 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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#if ENABLE_FEATURE_FDISK_WRITABLE
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char changed; /* boolean */
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#endif
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off_t offset; /* disk sector number */
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char *sectorbuffer; /* disk sector contents */
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} ptes[MAXIMUM_PARTS];
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#if ENABLE_FEATURE_FDISK_WRITABLE
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static void
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set_all_unchanged(void)
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{
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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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static ATTRIBUTE_ALWAYS_INLINE void
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set_changed(int i)
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{
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ptes[i].changed = 1;
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}
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#endif /* FEATURE_FDISK_WRITABLE */
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static ATTRIBUTE_ALWAYS_INLINE struct partition *
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get_part_table(int i)
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{
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return ptes[i].part_table;
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}
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static const char *
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str_units(int n)
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{ /* n==1: use singular */
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if (n == 1)
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return display_in_cyl_units ? _("cylinder") : _("sector");
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else
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return display_in_cyl_units ? _("cylinders") : _("sectors");
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}
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static int
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valid_part_table_flag(const char *mbuffer)
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{
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return (mbuffer[510] == 0x55 && (uint8_t)mbuffer[511] == 0xaa);
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}
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#if ENABLE_FEATURE_FDISK_WRITABLE
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static ATTRIBUTE_ALWAYS_INLINE void
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write_part_table_flag(char *b)
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{
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b[510] = 0x55;
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b[511] = 0xaa;
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}
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static char line_buffer[LINE_LENGTH];
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static char *line_ptr;
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/* read line; return 0 or first char */
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static int
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read_line(void)
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{
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fflush(stdout); /* requested by niles@scyld.com */
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line_ptr = line_buffer;
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if (!fgets(line_buffer, LINE_LENGTH, stdin)) {
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/* error or eof */
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bb_error_msg_and_die("\ngot EOF, exiting");
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}
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while (*line_ptr && !isgraph(*line_ptr))
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line_ptr++;
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return *line_ptr;
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}
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static char
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read_nonempty(const char *mesg)
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{
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do {
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fputs(mesg, stdout);
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} while (!read_line());
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return *line_ptr;
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}
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static char
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read_maybe_empty(const char *mesg)
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{
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fputs(mesg, stdout);
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if (!read_line()) {
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line_ptr = line_buffer;
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*line_ptr = '\n';
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line_ptr[1] = 0;
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}
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return *line_ptr;
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}
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static int
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read_hex(const struct systypes *sys)
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{
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unsigned long v;
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while (1) {
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read_nonempty(_("Hex code (type L to list codes): "));
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if (*line_ptr == 'l' || *line_ptr == 'L') {
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list_types(sys);
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continue;
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}
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v = bb_strtoul(line_ptr, NULL, 16);
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if (v > 0xff)
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/* Bad input also triggers this */
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continue;
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return v;
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}
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}
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#endif /* FEATURE_FDISK_WRITABLE */
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#include "fdisk_aix.c"
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typedef struct {
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unsigned char info[128]; /* Informative text string */
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unsigned char spare0[14];
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struct sun_info {
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unsigned char spare1;
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unsigned char id;
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unsigned char spare2;
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unsigned char flags;
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} infos[8];
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unsigned char spare1[246]; /* Boot information etc. */
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unsigned short rspeed; /* Disk rotational speed */
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unsigned short pcylcount; /* Physical cylinder count */
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unsigned short sparecyl; /* extra sects per cylinder */
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unsigned char spare2[4]; /* More magic... */
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unsigned short ilfact; /* Interleave factor */
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unsigned short ncyl; /* Data cylinder count */
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unsigned short nacyl; /* Alt. cylinder count */
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unsigned short ntrks; /* Tracks per cylinder */
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unsigned short nsect; /* Sectors per track */
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unsigned char spare3[4]; /* Even more magic... */
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struct sun_partinfo {
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uint32_t start_cylinder;
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uint32_t num_sectors;
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} partitions[8];
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unsigned short magic; /* Magic number */
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unsigned short csum; /* Label xor'd checksum */
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} sun_partition;
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#define sunlabel ((sun_partition *)MBRbuffer)
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#define SUNOS_SWAP 3
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#define SUN_WHOLE_DISK 5
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STATIC_OSF void bsd_select(void);
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STATIC_OSF void xbsd_print_disklabel(int);
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#include "fdisk_osf.c"
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#define SGI_VOLHDR 0x00
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/* 1 and 2 were used for drive types no longer supported by SGI */
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#define SGI_SWAP 0x03
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/* 4 and 5 were for filesystem types SGI haven't ever supported on MIPS CPUs */
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#define SGI_VOLUME 0x06
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#define SGI_EFS 0x07
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#define SGI_LVOL 0x08
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#define SGI_RLVOL 0x09
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#define SGI_XFS 0x0a
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#define SGI_XFSLOG 0x0b
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#define SGI_XLV 0x0c
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#define SGI_XVM 0x0d
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#define SGI_ENTIRE_DISK SGI_VOLUME
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#if ENABLE_FEATURE_SGI_LABEL || ENABLE_FEATURE_SUN_LABEL
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static uint16_t
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fdisk_swap16(uint16_t x)
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{
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return (x << 8) | (x >> 8);
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}
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static uint32_t
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fdisk_swap32(uint32_t x)
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{
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return (x << 24) |
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((x & 0xFF00) << 8) |
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((x & 0xFF0000) >> 8) |
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(x >> 24);
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}
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#endif
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STATIC_SGI const struct systypes sgi_sys_types[];
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STATIC_SGI unsigned sgi_get_num_sectors(int i);
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STATIC_SGI int sgi_get_sysid(int i);
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STATIC_SGI void sgi_delete_partition(int i);
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STATIC_SGI void sgi_change_sysid(int i, int sys);
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STATIC_SGI void sgi_list_table(int xtra);
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#if ENABLE_FEATURE_FDISK_ADVANCED
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STATIC_SGI void sgi_set_xcyl(void);
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#endif
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STATIC_SGI int verify_sgi(int verbose);
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STATIC_SGI void sgi_add_partition(int n, int sys);
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STATIC_SGI void sgi_set_swappartition(int i);
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STATIC_SGI const char *sgi_get_bootfile(void);
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STATIC_SGI void sgi_set_bootfile(const char* aFile);
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STATIC_SGI void create_sgiinfo(void);
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STATIC_SGI void sgi_write_table(void);
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STATIC_SGI void sgi_set_bootpartition(int i);
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#include "fdisk_sgi.c"
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STATIC_SUN const struct systypes sun_sys_types[];
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STATIC_SUN void sun_delete_partition(int i);
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STATIC_SUN void sun_change_sysid(int i, int sys);
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STATIC_SUN void sun_list_table(int xtra);
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STATIC_SUN void add_sun_partition(int n, int sys);
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#if ENABLE_FEATURE_FDISK_ADVANCED
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STATIC_SUN void sun_set_alt_cyl(void);
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STATIC_SUN void sun_set_ncyl(int cyl);
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STATIC_SUN void sun_set_xcyl(void);
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STATIC_SUN void sun_set_ilfact(void);
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STATIC_SUN void sun_set_rspeed(void);
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STATIC_SUN void sun_set_pcylcount(void);
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#endif
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STATIC_SUN void toggle_sunflags(int i, unsigned char mask);
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STATIC_SUN void verify_sun(void);
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STATIC_SUN void sun_write_table(void);
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#include "fdisk_sun.c"
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/* DOS partition types */
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static const struct systypes i386_sys_types[] = {
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{ "\x00" "Empty" },
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{ "\x01" "FAT12" },
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{ "\x04" "FAT16 <32M" },
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{ "\x05" "Extended" }, /* DOS 3.3+ extended partition */
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{ "\x06" "FAT16" }, /* DOS 16-bit >=32M */
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{ "\x07" "HPFS/NTFS" }, /* OS/2 IFS, eg, HPFS or NTFS or QNX */
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{ "\x0a" "OS/2 Boot Manager" },/* OS/2 Boot Manager */
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{ "\x0b" "Win95 FAT32" },
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{ "\x0c" "Win95 FAT32 (LBA)" },/* LBA really is 'Extended Int 13h' */
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{ "\x0e" "Win95 FAT16 (LBA)" },
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{ "\x0f" "Win95 Ext'd (LBA)" },
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{ "\x11" "Hidden FAT12" },
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{ "\x12" "Compaq diagnostics" },
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{ "\x14" "Hidden FAT16 <32M" },
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{ "\x16" "Hidden FAT16" },
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{ "\x17" "Hidden HPFS/NTFS" },
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{ "\x1b" "Hidden Win95 FAT32" },
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{ "\x1c" "Hidden Win95 FAT32 (LBA)" },
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{ "\x1e" "Hidden Win95 FAT16 (LBA)" },
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{ "\x3c" "PartitionMagic recovery" },
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{ "\x41" "PPC PReP Boot" },
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{ "\x42" "SFS" },
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{ "\x63" "GNU HURD or SysV" }, /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */
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{ "\x80" "Old Minix" }, /* Minix 1.4a and earlier */
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{ "\x81" "Minix / old Linux" },/* Minix 1.4b and later */
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{ "\x82" "Linux swap" }, /* also Solaris */
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{ "\x83" "Linux" },
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{ "\x84" "OS/2 hidden C: drive" },
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{ "\x85" "Linux extended" },
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{ "\x86" "NTFS volume set" },
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{ "\x87" "NTFS volume set" },
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{ "\x8e" "Linux LVM" },
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{ "\x9f" "BSD/OS" }, /* BSDI */
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{ "\xa0" "IBM Thinkpad hibernation" },
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{ "\xa5" "FreeBSD" }, /* various BSD flavours */
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{ "\xa6" "OpenBSD" },
|
|
{ "\xa8" "Darwin UFS" },
|
|
{ "\xa9" "NetBSD" },
|
|
{ "\xab" "Darwin boot" },
|
|
{ "\xb7" "BSDI fs" },
|
|
{ "\xb8" "BSDI swap" },
|
|
{ "\xbe" "Solaris boot" },
|
|
{ "\xeb" "BeOS fs" },
|
|
{ "\xee" "EFI GPT" }, /* Intel EFI GUID Partition Table */
|
|
{ "\xef" "EFI (FAT-12/16/32)" },/* Intel EFI System Partition */
|
|
{ "\xf0" "Linux/PA-RISC boot" },/* Linux/PA-RISC boot loader */
|
|
{ "\xf2" "DOS secondary" }, /* DOS 3.3+ secondary */
|
|
{ "\xfd" "Linux raid autodetect" },/* New (2.2.x) raid partition with
|
|
autodetect using persistent
|
|
superblock */
|
|
#if 0 /* ENABLE_WEIRD_PARTITION_TYPES */
|
|
{ "\x02" "XENIX root" },
|
|
{ "\x03" "XENIX usr" },
|
|
{ "\x08" "AIX" }, /* AIX boot (AIX -- PS/2 port) or SplitDrive */
|
|
{ "\x09" "AIX bootable" }, /* AIX data or Coherent */
|
|
{ "\x10" "OPUS" },
|
|
{ "\x18" "AST SmartSleep" },
|
|
{ "\x24" "NEC DOS" },
|
|
{ "\x39" "Plan 9" },
|
|
{ "\x40" "Venix 80286" },
|
|
{ "\x4d" "QNX4.x" },
|
|
{ "\x4e" "QNX4.x 2nd part" },
|
|
{ "\x4f" "QNX4.x 3rd part" },
|
|
{ "\x50" "OnTrack DM" },
|
|
{ "\x51" "OnTrack DM6 Aux1" }, /* (or Novell) */
|
|
{ "\x52" "CP/M" }, /* CP/M or Microport SysV/AT */
|
|
{ "\x53" "OnTrack DM6 Aux3" },
|
|
{ "\x54" "OnTrackDM6" },
|
|
{ "\x55" "EZ-Drive" },
|
|
{ "\x56" "Golden Bow" },
|
|
{ "\x5c" "Priam Edisk" },
|
|
{ "\x61" "SpeedStor" },
|
|
{ "\x64" "Novell Netware 286" },
|
|
{ "\x65" "Novell Netware 386" },
|
|
{ "\x70" "DiskSecure Multi-Boot" },
|
|
{ "\x75" "PC/IX" },
|
|
{ "\x93" "Amoeba" },
|
|
{ "\x94" "Amoeba BBT" }, /* (bad block table) */
|
|
{ "\xa7" "NeXTSTEP" },
|
|
{ "\xbb" "Boot Wizard hidden" },
|
|
{ "\xc1" "DRDOS/sec (FAT-12)" },
|
|
{ "\xc4" "DRDOS/sec (FAT-16 < 32M)" },
|
|
{ "\xc6" "DRDOS/sec (FAT-16)" },
|
|
{ "\xc7" "Syrinx" },
|
|
{ "\xda" "Non-FS data" },
|
|
{ "\xdb" "CP/M / CTOS / ..." },/* CP/M or Concurrent CP/M or
|
|
Concurrent DOS or CTOS */
|
|
{ "\xde" "Dell Utility" }, /* Dell PowerEdge Server utilities */
|
|
{ "\xdf" "BootIt" }, /* BootIt EMBRM */
|
|
{ "\xe1" "DOS access" }, /* DOS access or SpeedStor 12-bit FAT
|
|
extended partition */
|
|
{ "\xe3" "DOS R/O" }, /* DOS R/O or SpeedStor */
|
|
{ "\xe4" "SpeedStor" }, /* SpeedStor 16-bit FAT extended
|
|
partition < 1024 cyl. */
|
|
{ "\xf1" "SpeedStor" },
|
|
{ "\xf4" "SpeedStor" }, /* SpeedStor large partition */
|
|
{ "\xfe" "LANstep" }, /* SpeedStor >1024 cyl. or LANstep */
|
|
{ "\xff" "BBT" }, /* Xenix Bad Block Table */
|
|
#endif
|
|
{ 0 }
|
|
};
|
|
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
/* start_sect and nr_sects are stored little endian on all machines */
|
|
/* moreover, they are not aligned correctly */
|
|
static void
|
|
store4_little_endian(unsigned char *cp, unsigned val)
|
|
{
|
|
cp[0] = val;
|
|
cp[1] = val >> 8;
|
|
cp[2] = val >> 16;
|
|
cp[3] = val >> 24;
|
|
}
|
|
#endif /* FEATURE_FDISK_WRITABLE */
|
|
|
|
static unsigned
|
|
read4_little_endian(const unsigned char *cp)
|
|
{
|
|
return cp[0] + (cp[1] << 8) + (cp[2] << 16) + (cp[3] << 24);
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static void
|
|
set_start_sect(struct partition *p, unsigned start_sect)
|
|
{
|
|
store4_little_endian(p->start4, start_sect);
|
|
}
|
|
#endif
|
|
|
|
static unsigned
|
|
get_start_sect(const struct partition *p)
|
|
{
|
|
return read4_little_endian(p->start4);
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static void
|
|
set_nr_sects(struct partition *p, unsigned nr_sects)
|
|
{
|
|
store4_little_endian(p->size4, nr_sects);
|
|
}
|
|
#endif
|
|
|
|
static unsigned
|
|
get_nr_sects(const struct partition *p)
|
|
{
|
|
return read4_little_endian(p->size4);
|
|
}
|
|
|
|
/* normally O_RDWR, -l option gives O_RDONLY */
|
|
static int type_open = O_RDWR;
|
|
|
|
|
|
static int ext_index; /* the prime extended partition */
|
|
static int listing; /* no aborts for fdisk -l */
|
|
static int dos_compatible_flag = ~0;
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static int dos_changed;
|
|
static int nowarn; /* no warnings for fdisk -l/-s */
|
|
#endif
|
|
|
|
|
|
|
|
static unsigned user_cylinders, user_heads, user_sectors;
|
|
static unsigned pt_heads, pt_sectors;
|
|
static unsigned kern_heads, kern_sectors;
|
|
|
|
static off_t extended_offset; /* offset of link pointers */
|
|
|
|
static unsigned long long total_number_of_sectors;
|
|
|
|
|
|
static jmp_buf listingbuf;
|
|
|
|
static void fdisk_fatal(enum failure why)
|
|
{
|
|
const char *message;
|
|
|
|
if (listing) {
|
|
close(fd);
|
|
longjmp(listingbuf, 1);
|
|
}
|
|
|
|
switch (why) {
|
|
case unable_to_open:
|
|
message = "\nUnable to open %s";
|
|
break;
|
|
case unable_to_read:
|
|
message = "\nUnable to read %s";
|
|
break;
|
|
case unable_to_seek:
|
|
message = "\nUnable to seek on %s";
|
|
break;
|
|
case unable_to_write:
|
|
message = "\nUnable to write %s";
|
|
break;
|
|
case ioctl_error:
|
|
message = "\nBLKGETSIZE ioctl failed on %s";
|
|
break;
|
|
default:
|
|
message = "\nFatal error";
|
|
}
|
|
|
|
bb_error_msg_and_die(message, disk_device);
|
|
}
|
|
|
|
static void
|
|
seek_sector(off_t secno)
|
|
{
|
|
off_t offset = secno * sector_size;
|
|
if (lseek(fd, offset, SEEK_SET) == (off_t) -1)
|
|
fdisk_fatal(unable_to_seek);
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static void
|
|
write_sector(off_t secno, char *buf)
|
|
{
|
|
seek_sector(secno);
|
|
if (write(fd, buf, sector_size) != sector_size)
|
|
fdisk_fatal(unable_to_write);
|
|
}
|
|
#endif
|
|
|
|
/* Allocate a buffer and read a partition table sector */
|
|
static void
|
|
read_pte(struct pte *pe, off_t offset)
|
|
{
|
|
pe->offset = offset;
|
|
pe->sectorbuffer = xmalloc(sector_size);
|
|
seek_sector(offset);
|
|
if (read(fd, pe->sectorbuffer, sector_size) != sector_size)
|
|
fdisk_fatal(unable_to_read);
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
pe->changed = 0;
|
|
#endif
|
|
pe->part_table = pe->ext_pointer = NULL;
|
|
}
|
|
|
|
static unsigned
|
|
get_partition_start(const struct pte *pe)
|
|
{
|
|
return pe->offset + get_start_sect(pe->part_table);
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
/*
|
|
* Avoid warning about DOS partitions when no DOS partition was changed.
|
|
* Here a heuristic "is probably dos partition".
|
|
* We might also do the opposite and warn in all cases except
|
|
* for "is probably nondos partition".
|
|
*/
|
|
static int
|
|
is_dos_partition(int t)
|
|
{
|
|
return (t == 1 || t == 4 || t == 6 ||
|
|
t == 0x0b || t == 0x0c || t == 0x0e ||
|
|
t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 ||
|
|
t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 ||
|
|
t == 0xc1 || t == 0xc4 || t == 0xc6);
|
|
}
|
|
|
|
static void
|
|
menu(void)
|
|
{
|
|
if (LABEL_IS_SUN) {
|
|
puts(_("Command action"));
|
|
puts(_("\ta\ttoggle a read only flag")); /* sun */
|
|
puts(_("\tb\tedit bsd disklabel"));
|
|
puts(_("\tc\ttoggle the mountable flag")); /* sun */
|
|
puts(_("\td\tdelete a partition"));
|
|
puts(_("\tl\tlist known partition types"));
|
|
puts(_("\tm\tprint this menu"));
|
|
puts(_("\tn\tadd a new partition"));
|
|
puts(_("\to\tcreate a new empty DOS partition table"));
|
|
puts(_("\tp\tprint the partition table"));
|
|
puts(_("\tq\tquit without saving changes"));
|
|
puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
|
|
puts(_("\tt\tchange a partition's system id"));
|
|
puts(_("\tu\tchange display/entry units"));
|
|
puts(_("\tv\tverify the partition table"));
|
|
puts(_("\tw\twrite table to disk and exit"));
|
|
#if ENABLE_FEATURE_FDISK_ADVANCED
|
|
puts(_("\tx\textra functionality (experts only)"));
|
|
#endif
|
|
} else
|
|
if (LABEL_IS_SGI) {
|
|
puts(_("Command action"));
|
|
puts(_("\ta\tselect bootable partition")); /* sgi flavour */
|
|
puts(_("\tb\tedit bootfile entry")); /* sgi */
|
|
puts(_("\tc\tselect sgi swap partition")); /* sgi flavour */
|
|
puts(_("\td\tdelete a partition"));
|
|
puts(_("\tl\tlist known partition types"));
|
|
puts(_("\tm\tprint this menu"));
|
|
puts(_("\tn\tadd a new partition"));
|
|
puts(_("\to\tcreate a new empty DOS partition table"));
|
|
puts(_("\tp\tprint the partition table"));
|
|
puts(_("\tq\tquit without saving changes"));
|
|
puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
|
|
puts(_("\tt\tchange a partition's system id"));
|
|
puts(_("\tu\tchange display/entry units"));
|
|
puts(_("\tv\tverify the partition table"));
|
|
puts(_("\tw\twrite table to disk and exit"));
|
|
} else
|
|
if (LABEL_IS_AIX) {
|
|
puts(_("Command action"));
|
|
puts(_("\tm\tprint this menu"));
|
|
puts(_("\to\tcreate a new empty DOS partition table"));
|
|
puts(_("\tq\tquit without saving changes"));
|
|
puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
|
|
} else
|
|
{
|
|
puts(_("Command action"));
|
|
puts(_("\ta\ttoggle a bootable flag"));
|
|
puts(_("\tb\tedit bsd disklabel"));
|
|
puts(_("\tc\ttoggle the dos compatibility flag"));
|
|
puts(_("\td\tdelete a partition"));
|
|
puts(_("\tl\tlist known partition types"));
|
|
puts(_("\tm\tprint this menu"));
|
|
puts(_("\tn\tadd a new partition"));
|
|
puts(_("\to\tcreate a new empty DOS partition table"));
|
|
puts(_("\tp\tprint the partition table"));
|
|
puts(_("\tq\tquit without saving changes"));
|
|
puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
|
|
puts(_("\tt\tchange a partition's system id"));
|
|
puts(_("\tu\tchange display/entry units"));
|
|
puts(_("\tv\tverify the partition table"));
|
|
puts(_("\tw\twrite table to disk and exit"));
|
|
#if ENABLE_FEATURE_FDISK_ADVANCED
|
|
puts(_("\tx\textra functionality (experts only)"));
|
|
#endif
|
|
}
|
|
}
|
|
#endif /* FEATURE_FDISK_WRITABLE */
|
|
|
|
|
|
#if ENABLE_FEATURE_FDISK_ADVANCED
|
|
static void
|
|
xmenu(void)
|
|
{
|
|
if (LABEL_IS_SUN) {
|
|
puts(_("Command action"));
|
|
puts(_("\ta\tchange number of alternate cylinders")); /*sun*/
|
|
puts(_("\tc\tchange number of cylinders"));
|
|
puts(_("\td\tprint the raw data in the partition table"));
|
|
puts(_("\te\tchange number of extra sectors per cylinder"));/*sun*/
|
|
puts(_("\th\tchange number of heads"));
|
|
puts(_("\ti\tchange interleave factor")); /*sun*/
|
|
puts(_("\to\tchange rotation speed (rpm)")); /*sun*/
|
|
puts(_("\tm\tprint this menu"));
|
|
puts(_("\tp\tprint the partition table"));
|
|
puts(_("\tq\tquit without saving changes"));
|
|
puts(_("\tr\treturn to main menu"));
|
|
puts(_("\ts\tchange number of sectors/track"));
|
|
puts(_("\tv\tverify the partition table"));
|
|
puts(_("\tw\twrite table to disk and exit"));
|
|
puts(_("\ty\tchange number of physical cylinders")); /*sun*/
|
|
} else
|
|
if (LABEL_IS_SGI) {
|
|
puts(_("Command action"));
|
|
puts(_("\tb\tmove beginning of data in a partition")); /* !sun */
|
|
puts(_("\tc\tchange number of cylinders"));
|
|
puts(_("\td\tprint the raw data in the partition table"));
|
|
puts(_("\te\tlist extended partitions")); /* !sun */
|
|
puts(_("\tg\tcreate an IRIX (SGI) partition table"));/* sgi */
|
|
puts(_("\th\tchange number of heads"));
|
|
puts(_("\tm\tprint this menu"));
|
|
puts(_("\tp\tprint the partition table"));
|
|
puts(_("\tq\tquit without saving changes"));
|
|
puts(_("\tr\treturn to main menu"));
|
|
puts(_("\ts\tchange number of sectors/track"));
|
|
puts(_("\tv\tverify the partition table"));
|
|
puts(_("\tw\twrite table to disk and exit"));
|
|
} else
|
|
if (LABEL_IS_AIX) {
|
|
puts(_("Command action"));
|
|
puts(_("\tb\tmove beginning of data in a partition")); /* !sun */
|
|
puts(_("\tc\tchange number of cylinders"));
|
|
puts(_("\td\tprint the raw data in the partition table"));
|
|
puts(_("\te\tlist extended partitions")); /* !sun */
|
|
puts(_("\tg\tcreate an IRIX (SGI) partition table"));/* sgi */
|
|
puts(_("\th\tchange number of heads"));
|
|
puts(_("\tm\tprint this menu"));
|
|
puts(_("\tp\tprint the partition table"));
|
|
puts(_("\tq\tquit without saving changes"));
|
|
puts(_("\tr\treturn to main menu"));
|
|
puts(_("\ts\tchange number of sectors/track"));
|
|
puts(_("\tv\tverify the partition table"));
|
|
puts(_("\tw\twrite table to disk and exit"));
|
|
} else {
|
|
puts(_("Command action"));
|
|
puts(_("\tb\tmove beginning of data in a partition")); /* !sun */
|
|
puts(_("\tc\tchange number of cylinders"));
|
|
puts(_("\td\tprint the raw data in the partition table"));
|
|
puts(_("\te\tlist extended partitions")); /* !sun */
|
|
puts(_("\tf\tfix partition order")); /* !sun, !aix, !sgi */
|
|
#if ENABLE_FEATURE_SGI_LABEL
|
|
puts(_("\tg\tcreate an IRIX (SGI) partition table"));/* sgi */
|
|
#endif
|
|
puts(_("\th\tchange number of heads"));
|
|
puts(_("\tm\tprint this menu"));
|
|
puts(_("\tp\tprint the partition table"));
|
|
puts(_("\tq\tquit without saving changes"));
|
|
puts(_("\tr\treturn to main menu"));
|
|
puts(_("\ts\tchange number of sectors/track"));
|
|
puts(_("\tv\tverify the partition table"));
|
|
puts(_("\tw\twrite table to disk and exit"));
|
|
}
|
|
}
|
|
#endif /* ADVANCED mode */
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static const struct systypes *
|
|
get_sys_types(void)
|
|
{
|
|
return (
|
|
LABEL_IS_SUN ? sun_sys_types :
|
|
LABEL_IS_SGI ? sgi_sys_types :
|
|
i386_sys_types);
|
|
}
|
|
#else
|
|
#define get_sys_types() i386_sys_types
|
|
#endif /* FEATURE_FDISK_WRITABLE */
|
|
|
|
static const char *partition_type(unsigned char type)
|
|
{
|
|
int i;
|
|
const struct systypes *types = get_sys_types();
|
|
|
|
for (i = 0; types[i].name; i++)
|
|
if ((unsigned char )types[i].name[0] == type)
|
|
return types[i].name + 1;
|
|
|
|
return _("Unknown");
|
|
}
|
|
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static int
|
|
get_sysid(int i)
|
|
{
|
|
return LABEL_IS_SUN ? sunlabel->infos[i].id :
|
|
(LABEL_IS_SGI ? sgi_get_sysid(i) :
|
|
ptes[i].part_table->sys_ind);
|
|
}
|
|
|
|
void list_types(const struct systypes *sys)
|
|
{
|
|
unsigned 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 {
|
|
printf("%c%2x %-15.15s", i ? ' ' : '\n',
|
|
(unsigned char)sys[next].name[0],
|
|
partition_type((unsigned char)sys[next].name[0]));
|
|
next = last[i++] + done;
|
|
if (i > 3 || next >= last[i]) {
|
|
i = 0;
|
|
next = ++done;
|
|
}
|
|
} while (done < last[0]);
|
|
putchar('\n');
|
|
}
|
|
#endif /* FEATURE_FDISK_WRITABLE */
|
|
|
|
static int
|
|
is_cleared_partition(const 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;
|
|
memset(p, 0, sizeof(struct partition));
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static void
|
|
set_partition(int i, int doext, off_t start, off_t stop, int sysid)
|
|
{
|
|
struct partition *p;
|
|
off_t 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;
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
test_c(const char **m, const char *mesg)
|
|
{
|
|
int val = 0;
|
|
if (!*m)
|
|
printf(_("You must set"));
|
|
else {
|
|
printf(" %s", *m);
|
|
val = 1;
|
|
}
|
|
*m = mesg;
|
|
return val;
|
|
}
|
|
|
|
static int
|
|
warn_geometry(void)
|
|
{
|
|
const char *m = NULL;
|
|
int prev = 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;
|
|
|
|
printf("%s%s.\n"
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
"You can do this from the extra functions menu.\n"
|
|
#endif
|
|
, prev ? _(" and ") : " ", m);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static 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 */
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static void
|
|
warn_cylinders(void)
|
|
{
|
|
if (LABEL_IS_DOS && cylinders > 1024 && !nowarn)
|
|
printf(_("\n"
|
|
"The number of cylinders for this disk is set to %d.\n"
|
|
"There is nothing wrong with that, but this is larger than 1024,\n"
|
|
"and could in certain setups cause problems with:\n"
|
|
"1) software that runs at boot time (e.g., old versions of LILO)\n"
|
|
"2) booting and partitioning software from other OSs\n"
|
|
" (e.g., DOS FDISK, OS/2 FDISK)\n"),
|
|
cylinders);
|
|
}
|
|
#endif
|
|
|
|
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)) {
|
|
printf(_("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];
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
printf(_("Warning: deleting partitions after %d\n"),
|
|
partitions);
|
|
pre->changed = 1;
|
|
#endif
|
|
clear_partition(pre->ext_pointer);
|
|
return;
|
|
}
|
|
|
|
read_pte(pe, 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)
|
|
printf(_("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)
|
|
printf(_("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++;
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
/* 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 */
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static void
|
|
create_doslabel(void)
|
|
{
|
|
int i;
|
|
|
|
printf(
|
|
_("Building a new DOS disklabel. Changes will remain in memory only,\n"
|
|
"until you decide to write them. After that, of course, the previous\n"
|
|
"content won't be recoverable.\n\n"));
|
|
|
|
current_label_type = label_dos;
|
|
|
|
#if ENABLE_FEATURE_OSF_LABEL
|
|
possibly_osf_label = 0;
|
|
#endif
|
|
partitions = 4;
|
|
|
|
for (i = 510-64; i < 510; i++)
|
|
MBRbuffer[i] = 0;
|
|
write_part_table_flag(MBRbuffer);
|
|
extended_offset = 0;
|
|
set_all_unchanged();
|
|
set_changed(0);
|
|
get_boot(create_empty_dos);
|
|
}
|
|
#endif /* FEATURE_FDISK_WRITABLE */
|
|
|
|
static void
|
|
get_sectorsize(void)
|
|
{
|
|
if (!user_set_sector_size) {
|
|
int arg;
|
|
if (ioctl(fd, BLKSSZGET, &arg) == 0)
|
|
sector_size = arg;
|
|
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(void)
|
|
{
|
|
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 */
|
|
}
|
|
}
|
|
|
|
static void
|
|
get_partition_table_geometry(void)
|
|
{
|
|
const unsigned char *bufp = (const unsigned char *)MBRbuffer;
|
|
struct partition *p;
|
|
int i, h, s, hh, ss;
|
|
int first = 1;
|
|
int bad = 0;
|
|
|
|
if (!(valid_part_table_flag((char*)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;
|
|
}
|
|
}
|
|
|
|
static void
|
|
get_geometry(void)
|
|
{
|
|
int sec_fac;
|
|
unsigned long long bytes; /* really u64 */
|
|
|
|
get_sectorsize();
|
|
sec_fac = sector_size / 512;
|
|
#if ENABLE_FEATURE_SUN_LABEL
|
|
guess_device_type();
|
|
#endif
|
|
heads = cylinders = sectors = 0;
|
|
kern_heads = kern_sectors = 0;
|
|
pt_heads = pt_sectors = 0;
|
|
|
|
get_kernel_geometry();
|
|
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;
|
|
if (ioctl(fd, BLKGETSIZE64, &bytes) == 0) {
|
|
/* got bytes */
|
|
} else {
|
|
unsigned long longsectors;
|
|
|
|
if (ioctl(fd, BLKGETSIZE, &longsectors))
|
|
longsectors = 0;
|
|
bytes = ((unsigned long long) longsectors) << 9;
|
|
}
|
|
|
|
total_number_of_sectors = (bytes >> 9);
|
|
|
|
sector_offset = 1;
|
|
if (dos_compatible_flag)
|
|
sector_offset = sectors;
|
|
|
|
cylinders = total_number_of_sectors / (heads * sectors * sec_fac);
|
|
if (!cylinders)
|
|
cylinders = user_cylinders;
|
|
}
|
|
|
|
/*
|
|
* Read MBR. Returns:
|
|
* -1: no 0xaa55 flag present (possibly entire disk BSD)
|
|
* 0: found or created label
|
|
* 1: I/O error
|
|
*/
|
|
static int
|
|
get_boot(enum action what)
|
|
{
|
|
int i;
|
|
|
|
partitions = 4;
|
|
|
|
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;
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
pe->changed = (what == create_empty_dos);
|
|
#endif
|
|
}
|
|
|
|
#if ENABLE_FEATURE_SUN_LABEL
|
|
if (what == create_empty_sun && check_sun_label())
|
|
return 0;
|
|
#endif
|
|
|
|
memset(MBRbuffer, 0, 512);
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
if (what == create_empty_dos)
|
|
goto got_dos_table; /* skip reading disk */
|
|
|
|
if ((fd = open(disk_device, type_open)) < 0) {
|
|
if ((fd = open(disk_device, O_RDONLY)) < 0) {
|
|
if (what == try_only)
|
|
return 1;
|
|
fdisk_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;
|
|
fdisk_fatal(unable_to_read);
|
|
}
|
|
#else
|
|
if ((fd = open(disk_device, O_RDONLY)) < 0)
|
|
return 1;
|
|
if (512 != read(fd, MBRbuffer, 512))
|
|
return 1;
|
|
#endif
|
|
|
|
get_geometry();
|
|
|
|
update_units();
|
|
|
|
#if ENABLE_FEATURE_SUN_LABEL
|
|
if (check_sun_label())
|
|
return 0;
|
|
#endif
|
|
|
|
#if ENABLE_FEATURE_SGI_LABEL
|
|
if (check_sgi_label())
|
|
return 0;
|
|
#endif
|
|
|
|
#if ENABLE_FEATURE_AIX_LABEL
|
|
if (check_aix_label())
|
|
return 0;
|
|
#endif
|
|
|
|
#if ENABLE_FEATURE_OSF_LABEL
|
|
if (check_osf_label()) {
|
|
possibly_osf_label = 1;
|
|
if (!valid_part_table_flag(MBRbuffer)) {
|
|
current_label_type = label_osf;
|
|
return 0;
|
|
}
|
|
printf(_("This disk has both DOS and BSD magic.\n"
|
|
"Give the 'b' command to go to BSD mode.\n"));
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
got_dos_table:
|
|
#endif
|
|
|
|
if (!valid_part_table_flag(MBRbuffer)) {
|
|
#if !ENABLE_FEATURE_FDISK_WRITABLE
|
|
return -1;
|
|
#else
|
|
switch (what) {
|
|
case fdisk:
|
|
printf(_("Device contains neither a valid DOS "
|
|
"partition table, nor Sun, SGI or OSF "
|
|
"disklabel\n"));
|
|
#ifdef __sparc__
|
|
#if ENABLE_FEATURE_SUN_LABEL
|
|
create_sunlabel();
|
|
#endif
|
|
#else
|
|
create_doslabel();
|
|
#endif
|
|
return 0;
|
|
case try_only:
|
|
return -1;
|
|
case create_empty_dos:
|
|
#if ENABLE_FEATURE_SUN_LABEL
|
|
case create_empty_sun:
|
|
#endif
|
|
break;
|
|
default:
|
|
bb_error_msg_and_die(_("internal error"));
|
|
}
|
|
#endif /* FEATURE_FDISK_WRITABLE */
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
warn_cylinders();
|
|
#endif
|
|
warn_geometry();
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
if (IS_EXTENDED(pe->part_table->sys_ind)) {
|
|
if (partitions != 4)
|
|
printf(_("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)) {
|
|
printf(_("Warning: invalid flag 0x%02x,0x%02x of partition "
|
|
"table %d will be corrected by w(rite)\n"),
|
|
pe->sectorbuffer[510],
|
|
pe->sectorbuffer[511],
|
|
i + 1);
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
pe->changed = 1;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
/*
|
|
* Print the message MESG, then read an integer between LOW and HIGH (inclusive).
|
|
* If the user hits Enter, DFLT is returned.
|
|
* Answers like +10 are interpreted as offsets from BASE.
|
|
*
|
|
* There is no default if DFLT is not between LOW and HIGH.
|
|
*/
|
|
static unsigned
|
|
read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, char *mesg)
|
|
{
|
|
unsigned i;
|
|
int default_ok = 1;
|
|
const char *fmt = "%s (%u-%u, default %u): ";
|
|
|
|
if (dflt < low || dflt > high) {
|
|
fmt = "%s (%u-%u): ";
|
|
default_ok = 0;
|
|
}
|
|
|
|
while (1) {
|
|
int use_default = default_ok;
|
|
|
|
/* ask question and read answer */
|
|
do {
|
|
printf(fmt, mesg, low, high, dflt);
|
|
read_maybe_empty("");
|
|
} while (*line_ptr != '\n' && !isdigit(*line_ptr)
|
|
&& *line_ptr != '-' && *line_ptr != '+');
|
|
|
|
if (*line_ptr == '+' || *line_ptr == '-') {
|
|
int minus = (*line_ptr == '-');
|
|
int absolute = 0;
|
|
|
|
i = atoi(line_ptr + 1);
|
|
|
|
while (isdigit(*++line_ptr))
|
|
use_default = 0;
|
|
|
|
switch (*line_ptr) {
|
|
case 'c':
|
|
case 'C':
|
|
if (!display_in_cyl_units)
|
|
i *= heads * sectors;
|
|
break;
|
|
case 'K':
|
|
absolute = 1024;
|
|
break;
|
|
case 'k':
|
|
absolute = 1000;
|
|
break;
|
|
case 'm':
|
|
case 'M':
|
|
absolute = 1000000;
|
|
break;
|
|
case 'g':
|
|
case 'G':
|
|
absolute = 1000000000;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (absolute) {
|
|
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 (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 is out of range\n"));
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static int
|
|
get_partition(int warn, int max)
|
|
{
|
|
struct pte *pe;
|
|
int i;
|
|
|
|
i = read_int(1, 0, max, 0, _("Partition number")) - 1;
|
|
pe = &ptes[i];
|
|
|
|
if (warn) {
|
|
if ((!LABEL_IS_SUN && !LABEL_IS_SGI && !pe->part_table->sys_ind)
|
|
|| (LABEL_IS_SUN && (!sunlabel->partitions[i].num_sectors || !sunlabel->infos[i].id))
|
|
|| (LABEL_IS_SGI && !sgi_get_num_sectors(i))
|
|
) {
|
|
printf(_("Warning: partition %d has empty type\n"), i+1);
|
|
}
|
|
}
|
|
return i;
|
|
}
|
|
|
|
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;
|
|
|
|
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(_("All primary partitions have been defined already!\n"));
|
|
return -1;
|
|
|
|
not_unique:
|
|
return get_partition(warn, max);
|
|
}
|
|
|
|
|
|
static void
|
|
change_units(void)
|
|
{
|
|
display_in_cyl_units = !display_in_cyl_units;
|
|
update_units();
|
|
printf(_("Changing display/entry units to %s\n"),
|
|
str_units(PLURAL));
|
|
}
|
|
|
|
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)
|
|
printf(_("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) {
|
|
sector_offset = sectors;
|
|
printf(_("DOS Compatibility flag is set\n"));
|
|
}
|
|
else {
|
|
sector_offset = 1;
|
|
printf(_("DOS Compatibility flag is not set\n"));
|
|
}
|
|
}
|
|
|
|
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 (LABEL_IS_SUN) {
|
|
sun_delete_partition(i);
|
|
return;
|
|
}
|
|
if (LABEL_IS_SGI) {
|
|
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 */
|
|
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)
|
|
{
|
|
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 (!LABEL_IS_SGI) {
|
|
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 && !LABEL_IS_SGI && !LABEL_IS_SUN && !get_nr_sects(p)) {
|
|
printf(_("Partition %d does not exist yet!\n"), i + 1);
|
|
return;
|
|
}
|
|
while (1) {
|
|
sys = read_hex (get_sys_types());
|
|
|
|
if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN) {
|
|
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 (!LABEL_IS_SUN && !LABEL_IS_SGI) {
|
|
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 (LABEL_IS_SUN && i == 2 && sys != SUN_WHOLE_DISK)
|
|
printf(_("Consider leaving partition 3 "
|
|
"as Whole disk (5),\n"
|
|
"as SunOS/Solaris expects it and "
|
|
"even Linux likes it.\n\n"));
|
|
if (LABEL_IS_SGI &&
|
|
(
|
|
(i == 10 && sys != SGI_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 (LABEL_IS_SUN) {
|
|
sun_change_sysid(i, sys);
|
|
} else if (LABEL_IS_SGI) {
|
|
sgi_change_sysid(i, sys);
|
|
} else
|
|
p->sys_ind = sys;
|
|
|
|
printf(_("Changed system type of partition %d "
|
|
"to %x (%s)\n"), i + 1, sys,
|
|
partition_type(sys));
|
|
ptes[i].changed = 1;
|
|
if (is_dos_partition(origsys) ||
|
|
is_dos_partition(sys))
|
|
dos_changed = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif /* FEATURE_FDISK_WRITABLE */
|
|
|
|
|
|
/* check_consistency() and linear2chs() 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
|
|
linear2chs(unsigned ls, unsigned *c, unsigned *h, unsigned *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(const struct partition *p, int partition)
|
|
{
|
|
unsigned pbc, pbh, pbs; /* physical beginning c, h, s */
|
|
unsigned pec, peh, pes; /* physical ending c, h, s */
|
|
unsigned lbc, lbh, lbs; /* logical beginning c, h, s */
|
|
unsigned lec, leh, les; /* logical ending c, h, s */
|
|
|
|
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) */
|
|
linear2chs(get_start_sect(p), &lbc, &lbh, &lbs);
|
|
|
|
/* compute logical ending (c, h, s) */
|
|
linear2chs(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);
|
|
}
|
|
|
|
/* Ending on cylinder boundary? */
|
|
if (peh != (heads - 1) || pes != sectors) {
|
|
printf(_("Partition %i does not end on cylinder boundary.\n"),
|
|
partition + 1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
list_disk_geometry(void)
|
|
{
|
|
long long bytes = (total_number_of_sectors << 9);
|
|
long megabytes = bytes/1000000;
|
|
|
|
if (megabytes < 10000)
|
|
printf(_("\nDisk %s: %ld MB, %lld bytes\n"),
|
|
disk_device, megabytes, bytes);
|
|
else
|
|
printf(_("\nDisk %s: %ld.%ld GB, %lld bytes\n"),
|
|
disk_device, megabytes/1000, (megabytes/100)%10, bytes);
|
|
printf(_("%d heads, %d sectors/track, %d cylinders"),
|
|
heads, sectors, cylinders);
|
|
if (units_per_sector == 1)
|
|
printf(_(", total %llu sectors"),
|
|
total_number_of_sectors / (sector_size/512));
|
|
printf(_("\nUnits = %s of %d * %d = %d bytes\n\n"),
|
|
str_units(PLURAL),
|
|
units_per_sector, sector_size, units_per_sector * sector_size);
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
const struct pte *pe;
|
|
const struct partition *p;
|
|
off_t 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;
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_ADVANCED
|
|
/*
|
|
* 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");
|
|
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
list_table(int xtra)
|
|
{
|
|
const struct partition *p;
|
|
int i, w;
|
|
|
|
if (LABEL_IS_SUN) {
|
|
sun_list_table(xtra);
|
|
return;
|
|
}
|
|
if (LABEL_IS_SUN) {
|
|
sgi_list_table(xtra);
|
|
return;
|
|
}
|
|
|
|
list_disk_geometry();
|
|
|
|
if (LABEL_IS_OSF) {
|
|
xbsd_print_disklabel(xtra);
|
|
return;
|
|
}
|
|
|
|
/* 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;
|
|
|
|
// 1 12345678901 12345678901 12345678901 12
|
|
printf(_("%*s Boot Start End Blocks Id System\n"),
|
|
w+1, _("Device"));
|
|
|
|
for (i = 0; i < partitions; i++) {
|
|
const struct pte *pe = &ptes[i];
|
|
off_t psects;
|
|
off_t pblocks;
|
|
unsigned podd;
|
|
|
|
p = pe->part_table;
|
|
if (!p || is_cleared_partition(p))
|
|
continue;
|
|
|
|
psects = get_nr_sects(p);
|
|
pblocks = psects;
|
|
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 %11llu %11llu %11llu%c %2x %s\n",
|
|
partname(disk_device, i+1, w+2),
|
|
!p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */
|
|
? '*' : '?',
|
|
(unsigned long long) cround(get_partition_start(pe)), /* start */
|
|
(unsigned long long) cround(get_partition_start(pe) + psects /* end */
|
|
- (psects ? 1 : 0)),
|
|
(unsigned long long) pblocks, podd ? '+' : ' ', /* odd flag on end */
|
|
p->sys_ind, /* type id */
|
|
partition_type(p->sys_ind)); /* type name */
|
|
|
|
check_consistency(p, 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 (LABEL_IS_DOS && wrong_p_order(NULL)) {
|
|
/* FIXME */
|
|
printf(_("\nPartition table entries are not in disk order\n"));
|
|
}
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_ADVANCED
|
|
static void
|
|
x_list_table(int extend)
|
|
{
|
|
const struct pte *pe;
|
|
const struct partition *p;
|
|
int i;
|
|
|
|
printf(_("\nDisk %s: %d heads, %d 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%11u%11u %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),
|
|
get_start_sect(p), get_nr_sects(p), p->sys_ind);
|
|
if (p->sys_ind)
|
|
check_consistency(p, i);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static void
|
|
fill_bounds(off_t *first, off_t *last)
|
|
{
|
|
int i;
|
|
const struct pte *pe = &ptes[0];
|
|
const 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 h, unsigned s, unsigned c, off_t start)
|
|
{
|
|
off_t 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)
|
|
printf(_("Warning: partition %d contains sector 0\n"), n);
|
|
if (h >= heads)
|
|
printf(_("Partition %d: head %d greater than maximum %d\n"),
|
|
n, h + 1, heads);
|
|
if (real_s >= sectors)
|
|
printf(_("Partition %d: sector %d greater than "
|
|
"maximum %d\n"), n, s, sectors);
|
|
if (real_c >= cylinders)
|
|
printf(_("Partitions %d: cylinder %llu greater than "
|
|
"maximum %d\n"), n, (unsigned long long)real_c + 1, cylinders);
|
|
if (cylinders <= 1024 && start != total)
|
|
printf(_("Partition %d: previous sectors %llu disagrees with "
|
|
"total %llu\n"), n, (unsigned long long)start, (unsigned long long)total);
|
|
}
|
|
|
|
static void
|
|
verify(void)
|
|
{
|
|
int i, j;
|
|
unsigned total = 1;
|
|
off_t first[partitions], last[partitions];
|
|
struct partition *p;
|
|
|
|
if (warn_geometry())
|
|
return;
|
|
|
|
if (LABEL_IS_SUN) {
|
|
verify_sun();
|
|
return;
|
|
}
|
|
if (LABEL_IS_SGI) {
|
|
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);
|
|
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];
|
|
off_t 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 > heads * sectors * cylinders)
|
|
printf(_("Total allocated sectors %d greater than the maximum "
|
|
"%d\n"), total, heads * sectors * cylinders);
|
|
else if ((total = heads * sectors * cylinders - total) != 0)
|
|
printf(_("%d unallocated sectors\n"), total);
|
|
}
|
|
|
|
static void
|
|
add_partition(int n, int sys)
|
|
{
|
|
char mesg[256]; /* 48 does not suffice in Japanese */
|
|
int i, num_read = 0;
|
|
struct partition *p = ptes[n].part_table;
|
|
struct partition *q = ptes[ext_index].part_table;
|
|
long long llimit;
|
|
off_t 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 {
|
|
temp = start;
|
|
for (i = 0; i < partitions; i++) {
|
|
int lastplusoff;
|
|
|
|
if (start == ptes[i].offset)
|
|
start += sector_offset;
|
|
lastplusoff = last[i] + ((n < 4) ? 0 : sector_offset);
|
|
if (start >= first[i] && start <= lastplusoff)
|
|
start = lastplusoff + 1;
|
|
}
|
|
if (start > limit)
|
|
break;
|
|
if (start >= temp+units_per_sector && num_read) {
|
|
printf(_("Sector %"OFF_FMT"d is already allocated\n"), temp);
|
|
temp = start;
|
|
num_read = 0;
|
|
}
|
|
if (!num_read && start == temp) {
|
|
off_t saved_start;
|
|
|
|
saved_start = start;
|
|
start = read_int(cround(saved_start), cround(saved_start), cround(limit),
|
|
0, mesg);
|
|
if (display_in_cyl_units) {
|
|
start = (start - 1) * units_per_sector;
|
|
if (start < saved_start) start = saved_start;
|
|
}
|
|
num_read = 1;
|
|
}
|
|
} while (start != temp || !num_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 {
|
|
snprintf(mesg, sizeof(mesg),
|
|
_("Last %s or +size or +sizeM or +sizeK"),
|
|
str_units(SINGULAR));
|
|
stop = read_int(cround(start), cround(limit), cround(limit),
|
|
cround(start), mesg);
|
|
if (display_in_cyl_units) {
|
|
stop = stop * units_per_sector - 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 = xzalloc(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 = xzalloc(sector_size);
|
|
pe->part_table = pt_offset(pe->sectorbuffer, 0);
|
|
pe->ext_pointer = pe->part_table + 1;
|
|
pe->offset = 0;
|
|
pe->changed = 1;
|
|
partitions++;
|
|
}
|
|
add_partition(partitions - 1, LINUX_NATIVE);
|
|
}
|
|
|
|
static void
|
|
new_partition(void)
|
|
{
|
|
int i, free_primary = 0;
|
|
|
|
if (warn_geometry())
|
|
return;
|
|
|
|
if (LABEL_IS_SUN) {
|
|
add_sun_partition(get_partition(0, partitions), LINUX_NATIVE);
|
|
return;
|
|
}
|
|
if (LABEL_IS_SGI) {
|
|
sgi_add_partition(get_partition(0, partitions), LINUX_NATIVE);
|
|
return;
|
|
}
|
|
if (LABEL_IS_AIX) {
|
|
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;
|
|
}
|
|
|
|
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)
|
|
add_logical();
|
|
else
|
|
printf(_("You must delete some partition and add "
|
|
"an extended partition first\n"));
|
|
} else {
|
|
char c, line[LINE_LENGTH];
|
|
snprintf(line, sizeof(line), "%s\n %s\n p primary "
|
|
"partition (1-4)\n",
|
|
"Command action", (extended_offset ?
|
|
"l logical (5 or over)" : "e extended"));
|
|
while (1) {
|
|
c = read_nonempty(line);
|
|
if (c == 'p' || c == 'P') {
|
|
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) {
|
|
i = get_nonexisting_partition(0, 4);
|
|
if (i >= 0)
|
|
add_partition(i, EXTENDED);
|
|
return;
|
|
}
|
|
else
|
|
printf(_("Invalid partition number "
|
|
"for type '%c'\n"), c);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
write_table(void)
|
|
{
|
|
int i;
|
|
|
|
if (LABEL_IS_DOS) {
|
|
for (i = 0; i < 3; i++)
|
|
if (ptes[i].changed)
|
|
ptes[3].changed = 1;
|
|
for (i = 3; i < partitions; i++) {
|
|
struct pte *pe = &ptes[i];
|
|
|
|
if (pe->changed) {
|
|
write_part_table_flag(pe->sectorbuffer);
|
|
write_sector(pe->offset, pe->sectorbuffer);
|
|
}
|
|
}
|
|
}
|
|
else if (LABEL_IS_SGI) {
|
|
/* no test on change? the printf below might be mistaken */
|
|
sgi_write_table();
|
|
}
|
|
else if (LABEL_IS_SUN) {
|
|
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);
|
|
}
|
|
|
|
static void
|
|
reread_partition_table(int leave)
|
|
{
|
|
int i;
|
|
|
|
printf(_("Calling ioctl() to re-read partition table\n"));
|
|
sync();
|
|
sleep(2); /* Huh? */
|
|
i = ioctl(fd, BLKRRPART);
|
|
#if 0
|
|
else {
|
|
/* some kernel versions (1.2.x) seem to have trouble
|
|
rereading the partition table, but if asked to do it
|
|
twice, the second time works. - biro@yggdrasil.com */
|
|
sync();
|
|
sleep(2);
|
|
i = ioctl(fd, BLKRRPART);
|
|
}
|
|
#endif
|
|
|
|
if (i) {
|
|
bb_perror_msg("WARNING: rereading partition table "
|
|
"failed, kernel still uses old table");
|
|
}
|
|
|
|
#if 0
|
|
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"));
|
|
#endif
|
|
|
|
if (leave) {
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
close(fd);
|
|
exit(i != 0);
|
|
}
|
|
}
|
|
#endif /* FEATURE_FDISK_WRITABLE */
|
|
|
|
#if ENABLE_FEATURE_FDISK_ADVANCED
|
|
#define MAX_PER_LINE 16
|
|
static void
|
|
print_buffer(char *pbuffer)
|
|
{
|
|
int i,l;
|
|
|
|
for (i = 0, l = 0; i < sector_size; i++, l++) {
|
|
if (l == 0)
|
|
printf("0x%03X:", i);
|
|
printf(" %02X", (unsigned char) pbuffer[i]);
|
|
if (l == MAX_PER_LINE - 1) {
|
|
puts("");
|
|
l = -1;
|
|
}
|
|
}
|
|
if (l > 0)
|
|
puts("");
|
|
puts("");
|
|
}
|
|
|
|
static void
|
|
print_raw(void)
|
|
{
|
|
int i;
|
|
|
|
printf(_("Device: %s\n"), disk_device);
|
|
if (LABEL_IS_SGI || LABEL_IS_SUN)
|
|
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;
|
|
off_t new, first;
|
|
|
|
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;
|
|
}
|
|
first = get_partition_start(pe);
|
|
new = read_int(first, first, first + get_nr_sects(p) - 1, first,
|
|
_("New beginning of data")) - pe->offset;
|
|
|
|
if (new != get_nr_sects(p)) {
|
|
first = get_nr_sects(p) + get_start_sect(p) - new;
|
|
set_nr_sects(p, first);
|
|
set_start_sect(p, new);
|
|
pe->changed = 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
xselect(void)
|
|
{
|
|
char c;
|
|
|
|
while (1) {
|
|
putchar('\n');
|
|
c = tolower(read_nonempty(_("Expert command (m for help): ")));
|
|
switch (c) {
|
|
case 'a':
|
|
if (LABEL_IS_SUN)
|
|
sun_set_alt_cyl();
|
|
break;
|
|
case 'b':
|
|
if (LABEL_IS_DOS)
|
|
move_begin(get_partition(0, partitions));
|
|
break;
|
|
case 'c':
|
|
user_cylinders = cylinders =
|
|
read_int(1, cylinders, 1048576, 0,
|
|
_("Number of cylinders"));
|
|
if (LABEL_IS_SUN)
|
|
sun_set_ncyl(cylinders);
|
|
if (LABEL_IS_DOS)
|
|
warn_cylinders();
|
|
break;
|
|
case 'd':
|
|
print_raw();
|
|
break;
|
|
case 'e':
|
|
if (LABEL_IS_SGI)
|
|
sgi_set_xcyl();
|
|
else if (LABEL_IS_SUN)
|
|
sun_set_xcyl();
|
|
else if (LABEL_IS_DOS)
|
|
x_list_table(1);
|
|
break;
|
|
case 'f':
|
|
if (LABEL_IS_DOS)
|
|
fix_partition_table_order();
|
|
break;
|
|
case 'g':
|
|
#if ENABLE_FEATURE_SGI_LABEL
|
|
create_sgilabel();
|
|
#endif
|
|
break;
|
|
case 'h':
|
|
user_heads = heads = read_int(1, heads, 256, 0,
|
|
_("Number of heads"));
|
|
update_units();
|
|
break;
|
|
case 'i':
|
|
if (LABEL_IS_SUN)
|
|
sun_set_ilfact();
|
|
break;
|
|
case 'o':
|
|
if (LABEL_IS_SUN)
|
|
sun_set_rspeed();
|
|
break;
|
|
case 'p':
|
|
if (LABEL_IS_SUN)
|
|
list_table(1);
|
|
else
|
|
x_list_table(0);
|
|
break;
|
|
case 'q':
|
|
close(fd);
|
|
puts("");
|
|
exit(0);
|
|
case 'r':
|
|
return;
|
|
case 's':
|
|
user_sectors = sectors = read_int(1, sectors, 63, 0,
|
|
_("Number of sectors"));
|
|
if (dos_compatible_flag) {
|
|
sector_offset = sectors;
|
|
printf(_("Warning: setting sector offset for DOS "
|
|
"compatiblity\n"));
|
|
}
|
|
update_units();
|
|
break;
|
|
case 'v':
|
|
verify();
|
|
break;
|
|
case 'w':
|
|
write_table(); /* does not return */
|
|
break;
|
|
case 'y':
|
|
if (LABEL_IS_SUN)
|
|
sun_set_pcylcount();
|
|
break;
|
|
default:
|
|
xmenu();
|
|
}
|
|
}
|
|
}
|
|
#endif /* ADVANCED mode */
|
|
|
|
static int
|
|
is_ide_cdrom_or_tape(const 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
|
|
trydev(const 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;
|
|
fd = open(disk_device, type_open);
|
|
if (fd >= 0) {
|
|
gb = get_boot(try_only);
|
|
if (gb > 0) { /* I/O error */
|
|
close(fd);
|
|
} else if (gb < 0) { /* no DOS signature */
|
|
list_disk_geometry();
|
|
if (LABEL_IS_AIX) {
|
|
return;
|
|
}
|
|
#if ENABLE_FEATURE_OSF_LABEL
|
|
if (bsd_trydev(device) < 0)
|
|
#endif
|
|
printf(_("Disk %s doesn't contain a valid "
|
|
"partition table\n"), device);
|
|
close(fd);
|
|
} else {
|
|
close(fd);
|
|
list_table(0);
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
if (!LABEL_IS_SUN && partitions > 4){
|
|
delete_partition(ext_index);
|
|
}
|
|
#endif
|
|
}
|
|
} else {
|
|
/* Ignore other errors, since we try IDE
|
|
and SCSI hard disks which may not be
|
|
installed on the system. */
|
|
if (errno == EACCES) {
|
|
printf(_("Cannot open %s\n"), device);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* for fdisk -l: try all things in /proc/partitions
|
|
that look like a partition name (do not end in a digit) */
|
|
static void
|
|
tryprocpt(void)
|
|
{
|
|
FILE *procpt;
|
|
char line[100], ptname[100], devname[120], *s;
|
|
int ma, mi, sz;
|
|
|
|
procpt = fopen_or_warn("/proc/partitions", "r");
|
|
|
|
while (fgets(line, sizeof(line), procpt)) {
|
|
if (sscanf(line, " %d %d %d %[^\n ]",
|
|
&ma, &mi, &sz, ptname) != 4)
|
|
continue;
|
|
for (s = ptname; *s; s++);
|
|
if (isdigit(s[-1]))
|
|
continue;
|
|
sprintf(devname, "/dev/%s", ptname);
|
|
trydev(devname, 0);
|
|
}
|
|
#if ENABLE_FEATURE_CLEAN_UP
|
|
fclose(procpt);
|
|
#endif
|
|
}
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
static void
|
|
unknown_command(int c)
|
|
{
|
|
printf(_("%c: unknown command\n"), c);
|
|
}
|
|
#endif
|
|
|
|
int fdisk_main(int argc, char **argv)
|
|
{
|
|
char *str_b, *str_C, *str_H, *str_S;
|
|
unsigned opt;
|
|
/*
|
|
* fdisk -v
|
|
* fdisk -l [-b sectorsize] [-u] device ...
|
|
* fdisk -s [partition] ...
|
|
* fdisk [-b sectorsize] [-u] device
|
|
*
|
|
* Options -C, -H, -S set the geometry.
|
|
*/
|
|
enum {
|
|
OPT_b = 1 << 0,
|
|
OPT_C = 1 << 1,
|
|
OPT_H = 1 << 2,
|
|
OPT_l = 1 << 3,
|
|
OPT_S = 1 << 4,
|
|
OPT_u = 1 << 5,
|
|
OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE,
|
|
};
|
|
opt = getopt32(argc, argv, "b:C:H:lS:u" USE_FEATURE_FDISK_BLKSIZE("s"),
|
|
&str_b, &str_C, &str_H, &str_S);
|
|
argc -= optind;
|
|
argv += optind;
|
|
if (opt & OPT_b) { // -b
|
|
/* Ugly: this sector size is really per device,
|
|
so cannot be combined with multiple disks,
|
|
and the same goes for the C/H/S options.
|
|
*/
|
|
sector_size = xatoi_u(str_b);
|
|
if (sector_size != 512 && sector_size != 1024 &&
|
|
sector_size != 2048)
|
|
bb_show_usage();
|
|
sector_offset = 2;
|
|
user_set_sector_size = 1;
|
|
}
|
|
if (opt & OPT_C) user_cylinders = xatoi_u(str_C); // -C
|
|
if (opt & OPT_H) { // -H
|
|
user_heads = xatoi_u(str_H);
|
|
if (user_heads <= 0 || user_heads >= 256)
|
|
user_heads = 0;
|
|
}
|
|
//if (opt & OPT_l) // -l
|
|
if (opt & OPT_S) { // -S
|
|
user_sectors = xatoi_u(str_S);
|
|
if (user_sectors <= 0 || user_sectors >= 64)
|
|
user_sectors = 0;
|
|
}
|
|
if (opt & OPT_u) display_in_cyl_units = 0; // -u
|
|
//if (opt & OPT_s) // -s
|
|
|
|
if (user_set_sector_size && argc != 1)
|
|
printf(_("Warning: the -b (set sector size) option should"
|
|
" be used with one specified device\n"));
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
if (opt & OPT_l) {
|
|
nowarn = 1;
|
|
#endif
|
|
type_open = O_RDONLY;
|
|
if (argc > 0) {
|
|
int k;
|
|
#if defined(__GNUC__)
|
|
/* avoid gcc warning:
|
|
variable `k' might be clobbered by `longjmp' */
|
|
(void)&k;
|
|
#endif
|
|
listing = 1;
|
|
for (k = 0; k < argc; k++)
|
|
trydev(argv[k], 1);
|
|
} else {
|
|
/* we no longer have default device names */
|
|
/* but, we can use /proc/partitions instead */
|
|
tryprocpt();
|
|
}
|
|
return 0;
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_FEATURE_FDISK_BLKSIZE
|
|
if (opt & OPT_s) {
|
|
long size;
|
|
int j;
|
|
|
|
nowarn = 1;
|
|
type_open = O_RDONLY;
|
|
|
|
if (argc <= 0)
|
|
bb_show_usage();
|
|
|
|
for (j = 0; j < argc; j++) {
|
|
disk_device = argv[j];
|
|
fd = open(disk_device, type_open);
|
|
if (fd < 0)
|
|
fdisk_fatal(unable_to_open);
|
|
if (ioctl(fd, BLKGETSIZE, &size))
|
|
fdisk_fatal(ioctl_error);
|
|
close(fd);
|
|
if (argc == 1)
|
|
printf("%ld\n", size/2);
|
|
else
|
|
printf("%s: %ld\n", argv[j], size/2);
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#if ENABLE_FEATURE_FDISK_WRITABLE
|
|
if (argc != 1)
|
|
bb_show_usage();
|
|
|
|
disk_device = argv[0];
|
|
get_boot(fdisk);
|
|
|
|
if (LABEL_IS_OSF) {
|
|
/* OSF label, and no DOS label */
|
|
printf(_("Detected an OSF/1 disklabel on %s, entering "
|
|
"disklabel mode.\n"), disk_device);
|
|
bsd_select();
|
|
/*Why do we do this? It seems to be counter-intuitive*/
|
|
current_label_type = label_dos;
|
|
/* If we return we may want to make an empty DOS label? */
|
|
}
|
|
|
|
while (1) {
|
|
int c;
|
|
putchar('\n');
|
|
c = tolower(read_nonempty(_("Command (m for help): ")));
|
|
switch (c) {
|
|
case 'a':
|
|
if (LABEL_IS_DOS)
|
|
toggle_active(get_partition(1, partitions));
|
|
else if (LABEL_IS_SUN)
|
|
toggle_sunflags(get_partition(1, partitions),
|
|
0x01);
|
|
else if (LABEL_IS_SGI)
|
|
sgi_set_bootpartition(
|
|
get_partition(1, partitions));
|
|
else
|
|
unknown_command(c);
|
|
break;
|
|
case 'b':
|
|
if (LABEL_IS_SGI) {
|
|
printf(_("\nThe current boot file is: %s\n"),
|
|
sgi_get_bootfile());
|
|
if (read_maybe_empty(_("Please enter the name of the "
|
|
"new boot file: ")) == '\n')
|
|
printf(_("Boot file unchanged\n"));
|
|
else
|
|
sgi_set_bootfile(line_ptr);
|
|
}
|
|
#if ENABLE_FEATURE_OSF_LABEL
|
|
else
|
|
bsd_select();
|
|
#endif
|
|
break;
|
|
case 'c':
|
|
if (LABEL_IS_DOS)
|
|
toggle_dos_compatibility_flag();
|
|
else if (LABEL_IS_SUN)
|
|
toggle_sunflags(get_partition(1, partitions),
|
|
0x10);
|
|
else if (LABEL_IS_SGI)
|
|
sgi_set_swappartition(
|
|
get_partition(1, partitions));
|
|
else
|
|
unknown_command(c);
|
|
break;
|
|
case 'd':
|
|
{
|
|
int j;
|
|
/* 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 (!LABEL_IS_SGI) {
|
|
j = get_existing_partition(1, partitions);
|
|
} else {
|
|
j = get_partition(1, partitions);
|
|
}
|
|
if (j >= 0)
|
|
delete_partition(j);
|
|
}
|
|
break;
|
|
case 'i':
|
|
if (LABEL_IS_SGI)
|
|
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);
|
|
puts("");
|
|
return 0;
|
|
case 's':
|
|
#if ENABLE_FEATURE_SUN_LABEL
|
|
create_sunlabel();
|
|
#endif
|
|
break;
|
|
case 't':
|
|
change_sysid();
|
|
break;
|
|
case 'u':
|
|
change_units();
|
|
break;
|
|
case 'v':
|
|
verify();
|
|
break;
|
|
case 'w':
|
|
write_table(); /* does not return */
|
|
break;
|
|
#if ENABLE_FEATURE_FDISK_ADVANCED
|
|
case 'x':
|
|
if (LABEL_IS_SGI) {
|
|
printf(_("\n\tSorry, no experts menu for SGI "
|
|
"partition tables available.\n\n"));
|
|
} else
|
|
xselect();
|
|
break;
|
|
#endif
|
|
default:
|
|
unknown_command(c);
|
|
menu();
|
|
}
|
|
}
|
|
return 0;
|
|
#endif /* FEATURE_FDISK_WRITABLE */
|
|
}
|