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