1 /* vi: set sw=4 ts=4: */
2 /* fdisk.c -- Partition table manipulator for Linux.
4 * Copyright (C) 1992 A. V. Le Blanc (LeBlanc@mcc.ac.uk)
5 * Copyright (C) 2001,2002 Vladimir Oleynik <dzo@simtreas.ru> (initial bb port)
7 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
10 #include <assert.h> /* assert */
14 /* Looks like someone forgot to add this to config system */
15 #ifndef ENABLE_FEATURE_FDISK_BLKSIZE
16 # define ENABLE_FEATURE_FDISK_BLKSIZE 0
17 # define USE_FEATURE_FDISK_BLKSIZE(a)
20 #define DEFAULT_SECTOR_SIZE 512
21 #define MAX_SECTOR_SIZE 2048
22 #define SECTOR_SIZE 512 /* still used in osf/sgi/sun code */
23 #define MAXIMUM_PARTS 60
25 #define ACTIVE_FLAG 0x80
28 #define WIN98_EXTENDED 0x0f
29 #define LINUX_PARTITION 0x81
30 #define LINUX_SWAP 0x82
31 #define LINUX_NATIVE 0x83
32 #define LINUX_EXTENDED 0x85
33 #define LINUX_LVM 0x8e
34 #define LINUX_RAID 0xfd
36 #define IS_EXTENDED(i) \
37 ((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED)
39 #define SIZE(a) (sizeof(a)/sizeof((a)[0]))
41 #define cround(n) (display_in_cyl_units ? ((n)/units_per_sector)+1 : (n))
42 #define scround(x) (((x)+units_per_sector-1)/units_per_sector)
46 unsigned char sectors;
47 unsigned short cylinders;
51 #define HDIO_GETGEO 0x0301 /* get device geometry */
57 static unsigned sector_size = DEFAULT_SECTOR_SIZE;
58 static unsigned user_set_sector_size;
59 static unsigned sector_offset = 1;
62 * Raw disk label. For DOS-type partition tables the MBR,
63 * with descriptions of the primary partitions.
65 #if (MAX_SECTOR_SIZE) > (BUFSIZ+1)
66 static char MBRbuffer[MAX_SECTOR_SIZE];
68 # define MBRbuffer bb_common_bufsiz1
71 #if ENABLE_FEATURE_OSF_LABEL
72 static int possibly_osf_label;
75 static unsigned heads, sectors, cylinders;
76 static void update_units(void);
80 * return partition name - uses static storage unless buf is supplied
83 partname(const char *dev, int pno, int lth)
85 static char buffer[80];
92 bufsiz = sizeof(buffer);
97 if (isdigit(dev[w-1]))
100 /* devfs kludge - note: fdisk partition names are not supposed
101 to equal kernel names, so there is no reason to do this */
102 if (strcmp(dev + w - 4, "disc") == 0) {
110 snprintf(bufp, bufsiz, "%*.*s%s%-2u",
111 lth-wp-2, w, dev, p, pno);
113 snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno);
119 unsigned char boot_ind; /* 0x80 - active */
120 unsigned char head; /* starting head */
121 unsigned char sector; /* starting sector */
122 unsigned char cyl; /* starting cylinder */
123 unsigned char sys_ind; /* What partition type */
124 unsigned char end_head; /* end head */
125 unsigned char end_sector; /* end sector */
126 unsigned char end_cyl; /* end cylinder */
127 unsigned char start4[4]; /* starting sector counting from 0 */
128 unsigned char size4[4]; /* nr of sectors in partition */
132 ioctl_error, unable_to_open, unable_to_read, unable_to_seek,
137 label_dos, label_sun, label_sgi, label_aix, label_osf
139 #define LABEL_IS_DOS (label_dos == current_label_type)
141 #if ENABLE_FEATURE_SUN_LABEL
142 #define LABEL_IS_SUN (label_sun == current_label_type)
143 #define STATIC_SUN static
145 #define LABEL_IS_SUN 0
146 #define STATIC_SUN extern
149 #if ENABLE_FEATURE_SGI_LABEL
150 #define LABEL_IS_SGI (label_sgi == current_label_type)
151 #define STATIC_SGI static
153 #define LABEL_IS_SGI 0
154 #define STATIC_SGI extern
157 #if ENABLE_FEATURE_AIX_LABEL
158 #define LABEL_IS_AIX (label_aix == current_label_type)
159 #define STATIC_AIX static
161 #define LABEL_IS_AIX 0
162 #define STATIC_AIX extern
165 #if ENABLE_FEATURE_OSF_LABEL
166 #define LABEL_IS_OSF (label_osf == current_label_type)
167 #define STATIC_OSF static
169 #define LABEL_IS_OSF 0
170 #define STATIC_OSF extern
173 enum action { fdisk, require, try_only, create_empty_dos, create_empty_sun };
175 static enum label_type current_label_type;
177 static const char *disk_device;
178 static int fd; /* the disk */
179 static int partitions = 4; /* maximum partition + 1 */
180 static int display_in_cyl_units = 1;
181 static unsigned units_per_sector = 1;
182 #if ENABLE_FEATURE_FDISK_WRITABLE
183 static void change_units(void);
184 static void reread_partition_table(int leave);
185 static void delete_partition(int i);
186 static int get_partition(int warn, int max);
187 static void list_types(const struct systypes *sys);
188 static unsigned read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, char *mesg);
190 static const char *partition_type(unsigned char type);
191 static void fdisk_fatal(enum failure why) ATTRIBUTE_NORETURN;
192 static void get_geometry(void);
193 static int get_boot(enum action what);
198 #define hex_val(c) ({ \
200 isdigit(_c) ? _c - '0' : \
201 tolower(_c) + 10 - 'a'; \
205 #define LINE_LENGTH 800
206 #define pt_offset(b, n) ((struct partition *)((b) + 0x1be + \
207 (n) * sizeof(struct partition)))
208 #define sector(s) ((s) & 0x3f)
209 #define cylinder(s, c) ((c) | (((s) & 0xc0) << 2))
211 #define hsc2sector(h,s,c) (sector(s) - 1 + sectors * \
212 ((h) + heads * cylinder(s,c)))
213 #define set_hsc(h,s,c,sector) { \
214 s = sector % sectors + 1; \
216 h = sector % heads; \
219 s |= (sector >> 2) & 0xc0; \
223 static unsigned get_start_sect(const struct partition *p);
224 static unsigned get_nr_sects(const struct partition *p);
227 * per partition table entry data
229 * The four primary partitions have the same sectorbuffer (MBRbuffer)
230 * and have NULL ext_pointer.
231 * Each logical partition table entry has two pointers, one for the
232 * partition and one link to the next one.
235 struct partition *part_table; /* points into sectorbuffer */
236 struct partition *ext_pointer; /* points into sectorbuffer */
237 #if ENABLE_FEATURE_FDISK_WRITABLE
238 char changed; /* boolean */
240 off_t offset; /* disk sector number */
241 char *sectorbuffer; /* disk sector contents */
242 } ptes[MAXIMUM_PARTS];
245 #if ENABLE_FEATURE_FDISK_WRITABLE
247 set_all_unchanged(void)
251 for (i = 0; i < MAXIMUM_PARTS; i++)
255 static ATTRIBUTE_ALWAYS_INLINE void
260 #endif /* FEATURE_FDISK_WRITABLE */
262 static ATTRIBUTE_ALWAYS_INLINE struct partition *
263 get_part_table(int i)
265 return ptes[i].part_table;
270 { /* n==1: use singular */
272 return display_in_cyl_units ? _("cylinder") : _("sector");
274 return display_in_cyl_units ? _("cylinders") : _("sectors");
278 valid_part_table_flag(const char *mbuffer)
280 return (mbuffer[510] == 0x55 && (uint8_t)mbuffer[511] == 0xaa);
283 #if ENABLE_FEATURE_FDISK_WRITABLE
284 static ATTRIBUTE_ALWAYS_INLINE void
285 write_part_table_flag(char *b)
291 static char line_buffer[LINE_LENGTH];
292 static char *line_ptr;
294 /* read line; return 0 or first char */
298 fflush(stdout); /* requested by niles@scyld.com */
299 line_ptr = line_buffer;
300 if (!fgets(line_buffer, LINE_LENGTH, stdin)) {
302 bb_error_msg_and_die("\ngot EOF, exiting");
304 while (*line_ptr && !isgraph(*line_ptr))
310 read_nonempty(const char *mesg)
314 } while (!read_line());
319 read_maybe_empty(const char *mesg)
323 line_ptr = line_buffer;
331 read_hex(const struct systypes *sys)
335 read_nonempty(_("Hex code (type L to list codes): "));
336 if (*line_ptr == 'l' || *line_ptr == 'L') {
340 v = bb_strtoul(line_ptr, NULL, 16);
342 /* Bad input also triggers this */
347 #endif /* FEATURE_FDISK_WRITABLE */
349 #include "fdisk_aix.c"
352 unsigned char info[128]; /* Informative text string */
353 unsigned char spare0[14];
355 unsigned char spare1;
357 unsigned char spare2;
360 unsigned char spare1[246]; /* Boot information etc. */
361 unsigned short rspeed; /* Disk rotational speed */
362 unsigned short pcylcount; /* Physical cylinder count */
363 unsigned short sparecyl; /* extra sects per cylinder */
364 unsigned char spare2[4]; /* More magic... */
365 unsigned short ilfact; /* Interleave factor */
366 unsigned short ncyl; /* Data cylinder count */
367 unsigned short nacyl; /* Alt. cylinder count */
368 unsigned short ntrks; /* Tracks per cylinder */
369 unsigned short nsect; /* Sectors per track */
370 unsigned char spare3[4]; /* Even more magic... */
371 struct sun_partinfo {
372 uint32_t start_cylinder;
373 uint32_t num_sectors;
375 unsigned short magic; /* Magic number */
376 unsigned short csum; /* Label xor'd checksum */
378 #define sunlabel ((sun_partition *)MBRbuffer)
380 #define SUN_WHOLE_DISK 5
381 STATIC_OSF void bsd_select(void);
382 STATIC_OSF void xbsd_print_disklabel(int);
383 #include "fdisk_osf.c"
385 #define SGI_VOLHDR 0x00
386 /* 1 and 2 were used for drive types no longer supported by SGI */
387 #define SGI_SWAP 0x03
388 /* 4 and 5 were for filesystem types SGI haven't ever supported on MIPS CPUs */
389 #define SGI_VOLUME 0x06
391 #define SGI_LVOL 0x08
392 #define SGI_RLVOL 0x09
394 #define SGI_XFSLOG 0x0b
397 #define SGI_ENTIRE_DISK SGI_VOLUME
398 #if ENABLE_FEATURE_SGI_LABEL || ENABLE_FEATURE_SUN_LABEL
400 fdisk_swap16(uint16_t x)
402 return (x << 8) | (x >> 8);
406 fdisk_swap32(uint32_t x)
409 ((x & 0xFF00) << 8) |
410 ((x & 0xFF0000) >> 8) |
415 STATIC_SGI const struct systypes sgi_sys_types[];
416 STATIC_SGI unsigned sgi_get_num_sectors(int i);
417 STATIC_SGI int sgi_get_sysid(int i);
418 STATIC_SGI void sgi_delete_partition(int i);
419 STATIC_SGI void sgi_change_sysid(int i, int sys);
420 STATIC_SGI void sgi_list_table(int xtra);
421 #if ENABLE_FEATURE_FDISK_ADVANCED
422 STATIC_SGI void sgi_set_xcyl(void);
424 STATIC_SGI int verify_sgi(int verbose);
425 STATIC_SGI void sgi_add_partition(int n, int sys);
426 STATIC_SGI void sgi_set_swappartition(int i);
427 STATIC_SGI const char *sgi_get_bootfile(void);
428 STATIC_SGI void sgi_set_bootfile(const char* aFile);
429 STATIC_SGI void create_sgiinfo(void);
430 STATIC_SGI void sgi_write_table(void);
431 STATIC_SGI void sgi_set_bootpartition(int i);
432 #include "fdisk_sgi.c"
434 STATIC_SUN const struct systypes sun_sys_types[];
435 STATIC_SUN void sun_delete_partition(int i);
436 STATIC_SUN void sun_change_sysid(int i, int sys);
437 STATIC_SUN void sun_list_table(int xtra);
438 STATIC_SUN void add_sun_partition(int n, int sys);
439 #if ENABLE_FEATURE_FDISK_ADVANCED
440 STATIC_SUN void sun_set_alt_cyl(void);
441 STATIC_SUN void sun_set_ncyl(int cyl);
442 STATIC_SUN void sun_set_xcyl(void);
443 STATIC_SUN void sun_set_ilfact(void);
444 STATIC_SUN void sun_set_rspeed(void);
445 STATIC_SUN void sun_set_pcylcount(void);
447 STATIC_SUN void toggle_sunflags(int i, unsigned char mask);
448 STATIC_SUN void verify_sun(void);
449 STATIC_SUN void sun_write_table(void);
450 #include "fdisk_sun.c"
452 /* DOS partition types */
454 static const struct systypes i386_sys_types[] = {
457 { "\x04" "FAT16 <32M" },
458 { "\x05" "Extended" }, /* DOS 3.3+ extended partition */
459 { "\x06" "FAT16" }, /* DOS 16-bit >=32M */
460 { "\x07" "HPFS/NTFS" }, /* OS/2 IFS, eg, HPFS or NTFS or QNX */
461 { "\x0a" "OS/2 Boot Manager" },/* OS/2 Boot Manager */
462 { "\x0b" "Win95 FAT32" },
463 { "\x0c" "Win95 FAT32 (LBA)" },/* LBA really is 'Extended Int 13h' */
464 { "\x0e" "Win95 FAT16 (LBA)" },
465 { "\x0f" "Win95 Ext'd (LBA)" },
466 { "\x11" "Hidden FAT12" },
467 { "\x12" "Compaq diagnostics" },
468 { "\x14" "Hidden FAT16 <32M" },
469 { "\x16" "Hidden FAT16" },
470 { "\x17" "Hidden HPFS/NTFS" },
471 { "\x1b" "Hidden Win95 FAT32" },
472 { "\x1c" "Hidden Win95 FAT32 (LBA)" },
473 { "\x1e" "Hidden Win95 FAT16 (LBA)" },
474 { "\x3c" "PartitionMagic recovery" },
475 { "\x41" "PPC PReP Boot" },
477 { "\x63" "GNU HURD or SysV" }, /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */
478 { "\x80" "Old Minix" }, /* Minix 1.4a and earlier */
479 { "\x81" "Minix / old Linux" },/* Minix 1.4b and later */
480 { "\x82" "Linux swap" }, /* also Solaris */
482 { "\x84" "OS/2 hidden C: drive" },
483 { "\x85" "Linux extended" },
484 { "\x86" "NTFS volume set" },
485 { "\x87" "NTFS volume set" },
486 { "\x8e" "Linux LVM" },
487 { "\x9f" "BSD/OS" }, /* BSDI */
488 { "\xa0" "IBM Thinkpad hibernation" },
489 { "\xa5" "FreeBSD" }, /* various BSD flavours */
490 { "\xa6" "OpenBSD" },
491 { "\xa8" "Darwin UFS" },
493 { "\xab" "Darwin boot" },
494 { "\xb7" "BSDI fs" },
495 { "\xb8" "BSDI swap" },
496 { "\xbe" "Solaris boot" },
497 { "\xeb" "BeOS fs" },
498 { "\xee" "EFI GPT" }, /* Intel EFI GUID Partition Table */
499 { "\xef" "EFI (FAT-12/16/32)" },/* Intel EFI System Partition */
500 { "\xf0" "Linux/PA-RISC boot" },/* Linux/PA-RISC boot loader */
501 { "\xf2" "DOS secondary" }, /* DOS 3.3+ secondary */
502 { "\xfd" "Linux raid autodetect" },/* New (2.2.x) raid partition with
503 autodetect using persistent
505 #if 0 /* ENABLE_WEIRD_PARTITION_TYPES */
506 { "\x02" "XENIX root" },
507 { "\x03" "XENIX usr" },
508 { "\x08" "AIX" }, /* AIX boot (AIX -- PS/2 port) or SplitDrive */
509 { "\x09" "AIX bootable" }, /* AIX data or Coherent */
511 { "\x18" "AST SmartSleep" },
512 { "\x24" "NEC DOS" },
514 { "\x40" "Venix 80286" },
516 { "\x4e" "QNX4.x 2nd part" },
517 { "\x4f" "QNX4.x 3rd part" },
518 { "\x50" "OnTrack DM" },
519 { "\x51" "OnTrack DM6 Aux1" }, /* (or Novell) */
520 { "\x52" "CP/M" }, /* CP/M or Microport SysV/AT */
521 { "\x53" "OnTrack DM6 Aux3" },
522 { "\x54" "OnTrackDM6" },
523 { "\x55" "EZ-Drive" },
524 { "\x56" "Golden Bow" },
525 { "\x5c" "Priam Edisk" },
526 { "\x61" "SpeedStor" },
527 { "\x64" "Novell Netware 286" },
528 { "\x65" "Novell Netware 386" },
529 { "\x70" "DiskSecure Multi-Boot" },
532 { "\x94" "Amoeba BBT" }, /* (bad block table) */
533 { "\xa7" "NeXTSTEP" },
534 { "\xbb" "Boot Wizard hidden" },
535 { "\xc1" "DRDOS/sec (FAT-12)" },
536 { "\xc4" "DRDOS/sec (FAT-16 < 32M)" },
537 { "\xc6" "DRDOS/sec (FAT-16)" },
539 { "\xda" "Non-FS data" },
540 { "\xdb" "CP/M / CTOS / ..." },/* CP/M or Concurrent CP/M or
541 Concurrent DOS or CTOS */
542 { "\xde" "Dell Utility" }, /* Dell PowerEdge Server utilities */
543 { "\xdf" "BootIt" }, /* BootIt EMBRM */
544 { "\xe1" "DOS access" }, /* DOS access or SpeedStor 12-bit FAT
545 extended partition */
546 { "\xe3" "DOS R/O" }, /* DOS R/O or SpeedStor */
547 { "\xe4" "SpeedStor" }, /* SpeedStor 16-bit FAT extended
548 partition < 1024 cyl. */
549 { "\xf1" "SpeedStor" },
550 { "\xf4" "SpeedStor" }, /* SpeedStor large partition */
551 { "\xfe" "LANstep" }, /* SpeedStor >1024 cyl. or LANstep */
552 { "\xff" "BBT" }, /* Xenix Bad Block Table */
558 #if ENABLE_FEATURE_FDISK_WRITABLE
559 /* start_sect and nr_sects are stored little endian on all machines */
560 /* moreover, they are not aligned correctly */
562 store4_little_endian(unsigned char *cp, unsigned val)
569 #endif /* FEATURE_FDISK_WRITABLE */
572 read4_little_endian(const unsigned char *cp)
574 return cp[0] + (cp[1] << 8) + (cp[2] << 16) + (cp[3] << 24);
577 #if ENABLE_FEATURE_FDISK_WRITABLE
579 set_start_sect(struct partition *p, unsigned start_sect)
581 store4_little_endian(p->start4, start_sect);
586 get_start_sect(const struct partition *p)
588 return read4_little_endian(p->start4);
591 #if ENABLE_FEATURE_FDISK_WRITABLE
593 set_nr_sects(struct partition *p, unsigned nr_sects)
595 store4_little_endian(p->size4, nr_sects);
600 get_nr_sects(const struct partition *p)
602 return read4_little_endian(p->size4);
605 /* normally O_RDWR, -l option gives O_RDONLY */
606 static int type_open = O_RDWR;
609 static int ext_index; /* the prime extended partition */
610 static int listing; /* no aborts for fdisk -l */
611 static int dos_compatible_flag = ~0;
612 #if ENABLE_FEATURE_FDISK_WRITABLE
613 static int dos_changed;
614 static int nowarn; /* no warnings for fdisk -l/-s */
619 static unsigned user_cylinders, user_heads, user_sectors;
620 static unsigned pt_heads, pt_sectors;
621 static unsigned kern_heads, kern_sectors;
623 static off_t extended_offset; /* offset of link pointers */
625 static unsigned long long total_number_of_sectors;
628 static jmp_buf listingbuf;
630 static void fdisk_fatal(enum failure why)
636 longjmp(listingbuf, 1);
641 message = "\nUnable to open %s";
644 message = "\nUnable to read %s";
647 message = "\nUnable to seek on %s";
649 case unable_to_write:
650 message = "\nUnable to write %s";
653 message = "\nBLKGETSIZE ioctl failed on %s";
656 message = "\nFatal error";
659 bb_error_msg_and_die(message, disk_device);
663 seek_sector(off_t secno)
665 off_t offset = secno * sector_size;
666 if (lseek(fd, offset, SEEK_SET) == (off_t) -1)
667 fdisk_fatal(unable_to_seek);
670 #if ENABLE_FEATURE_FDISK_WRITABLE
672 write_sector(off_t secno, char *buf)
675 if (write(fd, buf, sector_size) != sector_size)
676 fdisk_fatal(unable_to_write);
680 /* Allocate a buffer and read a partition table sector */
682 read_pte(struct pte *pe, off_t offset)
685 pe->sectorbuffer = xmalloc(sector_size);
687 if (read(fd, pe->sectorbuffer, sector_size) != sector_size)
688 fdisk_fatal(unable_to_read);
689 #if ENABLE_FEATURE_FDISK_WRITABLE
692 pe->part_table = pe->ext_pointer = NULL;
696 get_partition_start(const struct pte *pe)
698 return pe->offset + get_start_sect(pe->part_table);
701 #if ENABLE_FEATURE_FDISK_WRITABLE
703 * Avoid warning about DOS partitions when no DOS partition was changed.
704 * Here a heuristic "is probably dos partition".
705 * We might also do the opposite and warn in all cases except
706 * for "is probably nondos partition".
709 is_dos_partition(int t)
711 return (t == 1 || t == 4 || t == 6 ||
712 t == 0x0b || t == 0x0c || t == 0x0e ||
713 t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 ||
714 t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 ||
715 t == 0xc1 || t == 0xc4 || t == 0xc6);
722 puts(_("Command action"));
723 puts(_("\ta\ttoggle a read only flag")); /* sun */
724 puts(_("\tb\tedit bsd disklabel"));
725 puts(_("\tc\ttoggle the mountable flag")); /* sun */
726 puts(_("\td\tdelete a partition"));
727 puts(_("\tl\tlist known partition types"));
728 puts(_("\tm\tprint this menu"));
729 puts(_("\tn\tadd a new partition"));
730 puts(_("\to\tcreate a new empty DOS partition table"));
731 puts(_("\tp\tprint the partition table"));
732 puts(_("\tq\tquit without saving changes"));
733 puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
734 puts(_("\tt\tchange a partition's system id"));
735 puts(_("\tu\tchange display/entry units"));
736 puts(_("\tv\tverify the partition table"));
737 puts(_("\tw\twrite table to disk and exit"));
738 #if ENABLE_FEATURE_FDISK_ADVANCED
739 puts(_("\tx\textra functionality (experts only)"));
743 puts(_("Command action"));
744 puts(_("\ta\tselect bootable partition")); /* sgi flavour */
745 puts(_("\tb\tedit bootfile entry")); /* sgi */
746 puts(_("\tc\tselect sgi swap partition")); /* sgi flavour */
747 puts(_("\td\tdelete a partition"));
748 puts(_("\tl\tlist known partition types"));
749 puts(_("\tm\tprint this menu"));
750 puts(_("\tn\tadd a new partition"));
751 puts(_("\to\tcreate a new empty DOS partition table"));
752 puts(_("\tp\tprint the partition table"));
753 puts(_("\tq\tquit without saving changes"));
754 puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
755 puts(_("\tt\tchange a partition's system id"));
756 puts(_("\tu\tchange display/entry units"));
757 puts(_("\tv\tverify the partition table"));
758 puts(_("\tw\twrite table to disk and exit"));
761 puts(_("Command action"));
762 puts(_("\tm\tprint this menu"));
763 puts(_("\to\tcreate a new empty DOS partition table"));
764 puts(_("\tq\tquit without saving changes"));
765 puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
768 puts(_("Command action"));
769 puts(_("\ta\ttoggle a bootable flag"));
770 puts(_("\tb\tedit bsd disklabel"));
771 puts(_("\tc\ttoggle the dos compatibility flag"));
772 puts(_("\td\tdelete a partition"));
773 puts(_("\tl\tlist known partition types"));
774 puts(_("\tm\tprint this menu"));
775 puts(_("\tn\tadd a new partition"));
776 puts(_("\to\tcreate a new empty DOS partition table"));
777 puts(_("\tp\tprint the partition table"));
778 puts(_("\tq\tquit without saving changes"));
779 puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
780 puts(_("\tt\tchange a partition's system id"));
781 puts(_("\tu\tchange display/entry units"));
782 puts(_("\tv\tverify the partition table"));
783 puts(_("\tw\twrite table to disk and exit"));
784 #if ENABLE_FEATURE_FDISK_ADVANCED
785 puts(_("\tx\textra functionality (experts only)"));
789 #endif /* FEATURE_FDISK_WRITABLE */
792 #if ENABLE_FEATURE_FDISK_ADVANCED
797 puts(_("Command action"));
798 puts(_("\ta\tchange number of alternate cylinders")); /*sun*/
799 puts(_("\tc\tchange number of cylinders"));
800 puts(_("\td\tprint the raw data in the partition table"));
801 puts(_("\te\tchange number of extra sectors per cylinder"));/*sun*/
802 puts(_("\th\tchange number of heads"));
803 puts(_("\ti\tchange interleave factor")); /*sun*/
804 puts(_("\to\tchange rotation speed (rpm)")); /*sun*/
805 puts(_("\tm\tprint this menu"));
806 puts(_("\tp\tprint the partition table"));
807 puts(_("\tq\tquit without saving changes"));
808 puts(_("\tr\treturn to main menu"));
809 puts(_("\ts\tchange number of sectors/track"));
810 puts(_("\tv\tverify the partition table"));
811 puts(_("\tw\twrite table to disk and exit"));
812 puts(_("\ty\tchange number of physical cylinders")); /*sun*/
815 puts(_("Command action"));
816 puts(_("\tb\tmove beginning of data in a partition")); /* !sun */
817 puts(_("\tc\tchange number of cylinders"));
818 puts(_("\td\tprint the raw data in the partition table"));
819 puts(_("\te\tlist extended partitions")); /* !sun */
820 puts(_("\tg\tcreate an IRIX (SGI) partition table"));/* sgi */
821 puts(_("\th\tchange number of heads"));
822 puts(_("\tm\tprint this menu"));
823 puts(_("\tp\tprint the partition table"));
824 puts(_("\tq\tquit without saving changes"));
825 puts(_("\tr\treturn to main menu"));
826 puts(_("\ts\tchange number of sectors/track"));
827 puts(_("\tv\tverify the partition table"));
828 puts(_("\tw\twrite table to disk and exit"));
831 puts(_("Command action"));
832 puts(_("\tb\tmove beginning of data in a partition")); /* !sun */
833 puts(_("\tc\tchange number of cylinders"));
834 puts(_("\td\tprint the raw data in the partition table"));
835 puts(_("\te\tlist extended partitions")); /* !sun */
836 puts(_("\tg\tcreate an IRIX (SGI) partition table"));/* sgi */
837 puts(_("\th\tchange number of heads"));
838 puts(_("\tm\tprint this menu"));
839 puts(_("\tp\tprint the partition table"));
840 puts(_("\tq\tquit without saving changes"));
841 puts(_("\tr\treturn to main menu"));
842 puts(_("\ts\tchange number of sectors/track"));
843 puts(_("\tv\tverify the partition table"));
844 puts(_("\tw\twrite table to disk and exit"));
846 puts(_("Command action"));
847 puts(_("\tb\tmove beginning of data in a partition")); /* !sun */
848 puts(_("\tc\tchange number of cylinders"));
849 puts(_("\td\tprint the raw data in the partition table"));
850 puts(_("\te\tlist extended partitions")); /* !sun */
851 puts(_("\tf\tfix partition order")); /* !sun, !aix, !sgi */
852 #if ENABLE_FEATURE_SGI_LABEL
853 puts(_("\tg\tcreate an IRIX (SGI) partition table"));/* sgi */
855 puts(_("\th\tchange number of heads"));
856 puts(_("\tm\tprint this menu"));
857 puts(_("\tp\tprint the partition table"));
858 puts(_("\tq\tquit without saving changes"));
859 puts(_("\tr\treturn to main menu"));
860 puts(_("\ts\tchange number of sectors/track"));
861 puts(_("\tv\tverify the partition table"));
862 puts(_("\tw\twrite table to disk and exit"));
865 #endif /* ADVANCED mode */
867 #if ENABLE_FEATURE_FDISK_WRITABLE
868 static const struct systypes *
872 LABEL_IS_SUN ? sun_sys_types :
873 LABEL_IS_SGI ? sgi_sys_types :
877 #define get_sys_types() i386_sys_types
878 #endif /* FEATURE_FDISK_WRITABLE */
880 static const char *partition_type(unsigned char type)
883 const struct systypes *types = get_sys_types();
885 for (i = 0; types[i].name; i++)
886 if ((unsigned char )types[i].name[0] == type)
887 return types[i].name + 1;
893 #if ENABLE_FEATURE_FDISK_WRITABLE
897 return LABEL_IS_SUN ? sunlabel->infos[i].id :
898 (LABEL_IS_SGI ? sgi_get_sysid(i) :
899 ptes[i].part_table->sys_ind);
902 void list_types(const struct systypes *sys)
904 unsigned last[4], done = 0, next = 0, size;
907 for (i = 0; sys[i].name; i++);
910 for (i = 3; i >= 0; i--)
911 last[3 - i] = done += (size + i - done) / (i + 1);
915 printf("%c%2x %-15.15s", i ? ' ' : '\n',
916 (unsigned char)sys[next].name[0],
917 partition_type((unsigned char)sys[next].name[0]));
918 next = last[i++] + done;
919 if (i > 3 || next >= last[i]) {
923 } while (done < last[0]);
926 #endif /* FEATURE_FDISK_WRITABLE */
929 is_cleared_partition(const struct partition *p)
931 return !(!p || p->boot_ind || p->head || p->sector || p->cyl ||
932 p->sys_ind || p->end_head || p->end_sector || p->end_cyl ||
933 get_start_sect(p) || get_nr_sects(p));
937 clear_partition(struct partition *p)
941 memset(p, 0, sizeof(struct partition));
944 #if ENABLE_FEATURE_FDISK_WRITABLE
946 set_partition(int i, int doext, off_t start, off_t stop, int sysid)
952 p = ptes[i].ext_pointer;
953 offset = extended_offset;
955 p = ptes[i].part_table;
956 offset = ptes[i].offset;
960 set_start_sect(p, start - offset);
961 set_nr_sects(p, stop - start + 1);
962 if (dos_compatible_flag && (start/(sectors*heads) > 1023))
963 start = heads*sectors*1024 - 1;
964 set_hsc(p->head, p->sector, p->cyl, start);
965 if (dos_compatible_flag && (stop/(sectors*heads) > 1023))
966 stop = heads*sectors*1024 - 1;
967 set_hsc(p->end_head, p->end_sector, p->end_cyl, stop);
973 test_c(const char **m, const char *mesg)
977 printf(_("You must set"));
989 const char *m = NULL;
993 prev = test_c(&m, _("heads"));
995 prev = test_c(&m, _("sectors"));
997 prev = test_c(&m, _("cylinders"));
1002 #if ENABLE_FEATURE_FDISK_WRITABLE
1003 "You can do this from the extra functions menu.\n"
1005 , prev ? _(" and ") : " ", m);
1010 static void update_units(void)
1012 int cyl_units = heads * sectors;
1014 if (display_in_cyl_units && cyl_units)
1015 units_per_sector = cyl_units;
1017 units_per_sector = 1; /* in sectors */
1020 #if ENABLE_FEATURE_FDISK_WRITABLE
1022 warn_cylinders(void)
1024 if (LABEL_IS_DOS && cylinders > 1024 && !nowarn)
1026 "The number of cylinders for this disk is set to %d.\n"
1027 "There is nothing wrong with that, but this is larger than 1024,\n"
1028 "and could in certain setups cause problems with:\n"
1029 "1) software that runs at boot time (e.g., old versions of LILO)\n"
1030 "2) booting and partitioning software from other OSs\n"
1031 " (e.g., DOS FDISK, OS/2 FDISK)\n"),
1037 read_extended(int ext)
1041 struct partition *p, *q;
1045 pex->ext_pointer = pex->part_table;
1047 p = pex->part_table;
1048 if (!get_start_sect(p)) {
1049 printf(_("Bad offset in primary extended partition\n"));
1053 while (IS_EXTENDED(p->sys_ind)) {
1054 struct pte *pe = &ptes[partitions];
1056 if (partitions >= MAXIMUM_PARTS) {
1057 /* This is not a Linux restriction, but
1058 this program uses arrays of size MAXIMUM_PARTS.
1059 Do not try to 'improve' this test. */
1060 struct pte *pre = &ptes[partitions-1];
1061 #if ENABLE_FEATURE_FDISK_WRITABLE
1062 printf(_("Warning: deleting partitions after %d\n"),
1066 clear_partition(pre->ext_pointer);
1070 read_pte(pe, extended_offset + get_start_sect(p));
1072 if (!extended_offset)
1073 extended_offset = get_start_sect(p);
1075 q = p = pt_offset(pe->sectorbuffer, 0);
1076 for (i = 0; i < 4; i++, p++) if (get_nr_sects(p)) {
1077 if (IS_EXTENDED(p->sys_ind)) {
1078 if (pe->ext_pointer)
1079 printf(_("Warning: extra link "
1080 "pointer in partition table"
1081 " %d\n"), partitions + 1);
1083 pe->ext_pointer = p;
1084 } else if (p->sys_ind) {
1086 printf(_("Warning: ignoring extra "
1087 "data in partition table"
1088 " %d\n"), partitions + 1);
1094 /* very strange code here... */
1095 if (!pe->part_table) {
1096 if (q != pe->ext_pointer)
1099 pe->part_table = q + 1;
1101 if (!pe->ext_pointer) {
1102 if (q != pe->part_table)
1103 pe->ext_pointer = q;
1105 pe->ext_pointer = q + 1;
1108 p = pe->ext_pointer;
1112 #if ENABLE_FEATURE_FDISK_WRITABLE
1113 /* remove empty links */
1115 for (i = 4; i < partitions; i++) {
1116 struct pte *pe = &ptes[i];
1118 if (!get_nr_sects(pe->part_table) &&
1119 (partitions > 5 || ptes[4].part_table->sys_ind)) {
1120 printf("omitting empty partition (%d)\n", i+1);
1121 delete_partition(i);
1122 goto remove; /* numbering changed */
1128 #if ENABLE_FEATURE_FDISK_WRITABLE
1130 create_doslabel(void)
1135 _("Building a new DOS disklabel. Changes will remain in memory only,\n"
1136 "until you decide to write them. After that, of course, the previous\n"
1137 "content won't be recoverable.\n\n"));
1139 current_label_type = label_dos;
1141 #if ENABLE_FEATURE_OSF_LABEL
1142 possibly_osf_label = 0;
1146 for (i = 510-64; i < 510; i++)
1148 write_part_table_flag(MBRbuffer);
1149 extended_offset = 0;
1150 set_all_unchanged();
1152 get_boot(create_empty_dos);
1154 #endif /* FEATURE_FDISK_WRITABLE */
1157 get_sectorsize(void)
1159 if (!user_set_sector_size) {
1161 if (ioctl(fd, BLKSSZGET, &arg) == 0)
1163 if (sector_size != DEFAULT_SECTOR_SIZE)
1164 printf(_("Note: sector size is %d (not %d)\n"),
1165 sector_size, DEFAULT_SECTOR_SIZE);
1170 get_kernel_geometry(void)
1172 struct hd_geometry geometry;
1174 if (!ioctl(fd, HDIO_GETGEO, &geometry)) {
1175 kern_heads = geometry.heads;
1176 kern_sectors = geometry.sectors;
1177 /* never use geometry.cylinders - it is truncated */
1182 get_partition_table_geometry(void)
1184 const unsigned char *bufp = (const unsigned char *)MBRbuffer;
1185 struct partition *p;
1186 int i, h, s, hh, ss;
1190 if (!(valid_part_table_flag((char*)bufp)))
1194 for (i = 0; i < 4; i++) {
1195 p = pt_offset(bufp, i);
1196 if (p->sys_ind != 0) {
1197 h = p->end_head + 1;
1198 s = (p->end_sector & 077);
1203 } else if (hh != h || ss != s)
1208 if (!first && !bad) {
1218 unsigned long long bytes; /* really u64 */
1221 sec_fac = sector_size / 512;
1222 #if ENABLE_FEATURE_SUN_LABEL
1223 guess_device_type();
1225 heads = cylinders = sectors = 0;
1226 kern_heads = kern_sectors = 0;
1227 pt_heads = pt_sectors = 0;
1229 get_kernel_geometry();
1230 get_partition_table_geometry();
1232 heads = user_heads ? user_heads :
1233 pt_heads ? pt_heads :
1234 kern_heads ? kern_heads : 255;
1235 sectors = user_sectors ? user_sectors :
1236 pt_sectors ? pt_sectors :
1237 kern_sectors ? kern_sectors : 63;
1238 if (ioctl(fd, BLKGETSIZE64, &bytes) == 0) {
1241 unsigned long longsectors;
1243 if (ioctl(fd, BLKGETSIZE, &longsectors))
1245 bytes = ((unsigned long long) longsectors) << 9;
1248 total_number_of_sectors = (bytes >> 9);
1251 if (dos_compatible_flag)
1252 sector_offset = sectors;
1254 cylinders = total_number_of_sectors / (heads * sectors * sec_fac);
1256 cylinders = user_cylinders;
1260 * Read MBR. Returns:
1261 * -1: no 0xaa55 flag present (possibly entire disk BSD)
1262 * 0: found or created label
1266 get_boot(enum action what)
1272 for (i = 0; i < 4; i++) {
1273 struct pte *pe = &ptes[i];
1275 pe->part_table = pt_offset(MBRbuffer, i);
1276 pe->ext_pointer = NULL;
1278 pe->sectorbuffer = MBRbuffer;
1279 #if ENABLE_FEATURE_FDISK_WRITABLE
1280 pe->changed = (what == create_empty_dos);
1284 #if ENABLE_FEATURE_SUN_LABEL
1285 if (what == create_empty_sun && check_sun_label())
1289 memset(MBRbuffer, 0, 512);
1291 #if ENABLE_FEATURE_FDISK_WRITABLE
1292 if (what == create_empty_dos)
1293 goto got_dos_table; /* skip reading disk */
1295 if ((fd = open(disk_device, type_open)) < 0) {
1296 if ((fd = open(disk_device, O_RDONLY)) < 0) {
1297 if (what == try_only)
1299 fdisk_fatal(unable_to_open);
1301 printf(_("You will not be able to write "
1302 "the partition table.\n"));
1305 if (512 != read(fd, MBRbuffer, 512)) {
1306 if (what == try_only)
1308 fdisk_fatal(unable_to_read);
1311 if ((fd = open(disk_device, O_RDONLY)) < 0)
1313 if (512 != read(fd, MBRbuffer, 512))
1321 #if ENABLE_FEATURE_SUN_LABEL
1322 if (check_sun_label())
1326 #if ENABLE_FEATURE_SGI_LABEL
1327 if (check_sgi_label())
1331 #if ENABLE_FEATURE_AIX_LABEL
1332 if (check_aix_label())
1336 #if ENABLE_FEATURE_OSF_LABEL
1337 if (check_osf_label()) {
1338 possibly_osf_label = 1;
1339 if (!valid_part_table_flag(MBRbuffer)) {
1340 current_label_type = label_osf;
1343 printf(_("This disk has both DOS and BSD magic.\n"
1344 "Give the 'b' command to go to BSD mode.\n"));
1348 #if ENABLE_FEATURE_FDISK_WRITABLE
1352 if (!valid_part_table_flag(MBRbuffer)) {
1353 #if !ENABLE_FEATURE_FDISK_WRITABLE
1358 printf(_("Device contains neither a valid DOS "
1359 "partition table, nor Sun, SGI or OSF "
1362 #if ENABLE_FEATURE_SUN_LABEL
1371 case create_empty_dos:
1372 #if ENABLE_FEATURE_SUN_LABEL
1373 case create_empty_sun:
1377 bb_error_msg_and_die(_("internal error"));
1379 #endif /* FEATURE_FDISK_WRITABLE */
1382 #if ENABLE_FEATURE_FDISK_WRITABLE
1387 for (i = 0; i < 4; i++) {
1388 struct pte *pe = &ptes[i];
1390 if (IS_EXTENDED(pe->part_table->sys_ind)) {
1391 if (partitions != 4)
1392 printf(_("Ignoring extra extended "
1393 "partition %d\n"), i + 1);
1399 for (i = 3; i < partitions; i++) {
1400 struct pte *pe = &ptes[i];
1402 if (!valid_part_table_flag(pe->sectorbuffer)) {
1403 printf(_("Warning: invalid flag 0x%02x,0x%02x of partition "
1404 "table %d will be corrected by w(rite)\n"),
1405 pe->sectorbuffer[510],
1406 pe->sectorbuffer[511],
1408 #if ENABLE_FEATURE_FDISK_WRITABLE
1417 #if ENABLE_FEATURE_FDISK_WRITABLE
1419 * Print the message MESG, then read an integer between LOW and HIGH (inclusive).
1420 * If the user hits Enter, DFLT is returned.
1421 * Answers like +10 are interpreted as offsets from BASE.
1423 * There is no default if DFLT is not between LOW and HIGH.
1426 read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, char *mesg)
1430 const char *fmt = "%s (%u-%u, default %u): ";
1432 if (dflt < low || dflt > high) {
1433 fmt = "%s (%u-%u): ";
1438 int use_default = default_ok;
1440 /* ask question and read answer */
1442 printf(fmt, mesg, low, high, dflt);
1443 read_maybe_empty("");
1444 } while (*line_ptr != '\n' && !isdigit(*line_ptr)
1445 && *line_ptr != '-' && *line_ptr != '+');
1447 if (*line_ptr == '+' || *line_ptr == '-') {
1448 int minus = (*line_ptr == '-');
1451 i = atoi(line_ptr + 1);
1453 while (isdigit(*++line_ptr))
1456 switch (*line_ptr) {
1459 if (!display_in_cyl_units)
1460 i *= heads * sectors;
1474 absolute = 1000000000;
1480 unsigned long long bytes;
1483 bytes = (unsigned long long) i * absolute;
1484 unit = sector_size * units_per_sector;
1485 bytes += unit/2; /* round */
1494 while (isdigit(*line_ptr)) {
1500 printf(_("Using default value %u\n"), i = dflt);
1501 if (i >= low && i <= high)
1504 printf(_("Value is out of range\n"));
1510 get_partition(int warn, int max)
1515 i = read_int(1, 0, max, 0, _("Partition number")) - 1;
1519 if ((!LABEL_IS_SUN && !LABEL_IS_SGI && !pe->part_table->sys_ind)
1520 || (LABEL_IS_SUN && (!sunlabel->partitions[i].num_sectors || !sunlabel->infos[i].id))
1521 || (LABEL_IS_SGI && !sgi_get_num_sectors(i))
1523 printf(_("Warning: partition %d has empty type\n"), i+1);
1530 get_existing_partition(int warn, int max)
1535 for (i = 0; i < max; i++) {
1536 struct pte *pe = &ptes[i];
1537 struct partition *p = pe->part_table;
1539 if (p && !is_cleared_partition(p)) {
1546 printf(_("Selected partition %d\n"), pno+1);
1549 printf(_("No partition is defined yet!\n"));
1553 return get_partition(warn, max);
1557 get_nonexisting_partition(int warn, int max)
1562 for (i = 0; i < max; i++) {
1563 struct pte *pe = &ptes[i];
1564 struct partition *p = pe->part_table;
1566 if (p && is_cleared_partition(p)) {
1573 printf(_("Selected partition %d\n"), pno+1);
1576 printf(_("All primary partitions have been defined already!\n"));
1580 return get_partition(warn, max);
1587 display_in_cyl_units = !display_in_cyl_units;
1589 printf(_("Changing display/entry units to %s\n"),
1594 toggle_active(int i)
1596 struct pte *pe = &ptes[i];
1597 struct partition *p = pe->part_table;
1599 if (IS_EXTENDED(p->sys_ind) && !p->boot_ind)
1600 printf(_("WARNING: Partition %d is an extended partition\n"), i + 1);
1601 p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG);
1606 toggle_dos_compatibility_flag(void)
1608 dos_compatible_flag = ~dos_compatible_flag;
1609 if (dos_compatible_flag) {
1610 sector_offset = sectors;
1611 printf(_("DOS Compatibility flag is set\n"));
1615 printf(_("DOS Compatibility flag is not set\n"));
1620 delete_partition(int i)
1622 struct pte *pe = &ptes[i];
1623 struct partition *p = pe->part_table;
1624 struct partition *q = pe->ext_pointer;
1626 /* Note that for the fifth partition (i == 4) we don't actually
1627 * decrement partitions.
1630 if (warn_geometry())
1631 return; /* C/H/S not set */
1635 sun_delete_partition(i);
1639 sgi_delete_partition(i);
1644 if (IS_EXTENDED(p->sys_ind) && i == ext_index) {
1646 ptes[ext_index].ext_pointer = NULL;
1647 extended_offset = 0;
1653 if (!q->sys_ind && i > 4) {
1654 /* the last one in the chain - just delete */
1657 clear_partition(ptes[i].ext_pointer);
1658 ptes[i].changed = 1;
1660 /* not the last one - further ones will be moved down */
1662 /* delete this link in the chain */
1663 p = ptes[i-1].ext_pointer;
1665 set_start_sect(p, get_start_sect(q));
1666 set_nr_sects(p, get_nr_sects(q));
1667 ptes[i-1].changed = 1;
1668 } else if (partitions > 5) { /* 5 will be moved to 4 */
1669 /* the first logical in a longer chain */
1672 if (pe->part_table) /* prevent SEGFAULT */
1673 set_start_sect(pe->part_table,
1674 get_partition_start(pe) -
1676 pe->offset = extended_offset;
1680 if (partitions > 5) {
1682 while (i < partitions) {
1683 ptes[i] = ptes[i+1];
1687 /* the only logical: clear only */
1688 clear_partition(ptes[i].part_table);
1695 int i, sys, origsys;
1696 struct partition *p;
1698 /* If sgi_label then don't use get_existing_partition,
1699 let the user select a partition, since get_existing_partition()
1700 only works for Linux like partition tables. */
1701 if (!LABEL_IS_SGI) {
1702 i = get_existing_partition(0, partitions);
1704 i = get_partition(0, partitions);
1708 p = ptes[i].part_table;
1709 origsys = sys = get_sysid(i);
1711 /* if changing types T to 0 is allowed, then
1712 the reverse change must be allowed, too */
1713 if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN && !get_nr_sects(p)) {
1714 printf(_("Partition %d does not exist yet!\n"), i + 1);
1718 sys = read_hex (get_sys_types());
1720 if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN) {
1721 printf(_("Type 0 means free space to many systems\n"
1722 "(but not to Linux). Having partitions of\n"
1723 "type 0 is probably unwise. You can delete\n"
1724 "a partition using the 'd' command.\n"));
1728 if (!LABEL_IS_SUN && !LABEL_IS_SGI) {
1729 if (IS_EXTENDED(sys) != IS_EXTENDED(p->sys_ind)) {
1730 printf(_("You cannot change a partition into"
1731 " an extended one or vice versa\n"
1732 "Delete it first.\n"));
1738 if (LABEL_IS_SUN && i == 2 && sys != SUN_WHOLE_DISK)
1739 printf(_("Consider leaving partition 3 "
1740 "as Whole disk (5),\n"
1741 "as SunOS/Solaris expects it and "
1742 "even Linux likes it.\n\n"));
1745 (i == 10 && sys != SGI_ENTIRE_DISK) ||
1746 (i == 8 && sys != 0)
1749 printf(_("Consider leaving partition 9 "
1750 "as volume header (0),\nand "
1751 "partition 11 as entire volume (6)"
1752 "as IRIX expects it.\n\n"));
1757 sun_change_sysid(i, sys);
1758 } else if (LABEL_IS_SGI) {
1759 sgi_change_sysid(i, sys);
1763 printf(_("Changed system type of partition %d "
1764 "to %x (%s)\n"), i + 1, sys,
1765 partition_type(sys));
1766 ptes[i].changed = 1;
1767 if (is_dos_partition(origsys) ||
1768 is_dos_partition(sys))
1774 #endif /* FEATURE_FDISK_WRITABLE */
1777 /* check_consistency() and linear2chs() added Sat Mar 6 12:28:16 1993,
1778 * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross,
1779 * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S.
1780 * Lubkin Oct. 1991). */
1783 linear2chs(unsigned ls, unsigned *c, unsigned *h, unsigned *s)
1785 int spc = heads * sectors;
1790 *s = ls % sectors + 1; /* sectors count from 1 */
1794 check_consistency(const struct partition *p, int partition)
1796 unsigned pbc, pbh, pbs; /* physical beginning c, h, s */
1797 unsigned pec, peh, pes; /* physical ending c, h, s */
1798 unsigned lbc, lbh, lbs; /* logical beginning c, h, s */
1799 unsigned lec, leh, les; /* logical ending c, h, s */
1801 if (!heads || !sectors || (partition >= 4))
1802 return; /* do not check extended partitions */
1804 /* physical beginning c, h, s */
1805 pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300);
1807 pbs = p->sector & 0x3f;
1809 /* physical ending c, h, s */
1810 pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300);
1812 pes = p->end_sector & 0x3f;
1814 /* compute logical beginning (c, h, s) */
1815 linear2chs(get_start_sect(p), &lbc, &lbh, &lbs);
1817 /* compute logical ending (c, h, s) */
1818 linear2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les);
1820 /* Same physical / logical beginning? */
1821 if (cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
1822 printf(_("Partition %d has different physical/logical "
1823 "beginnings (non-Linux?):\n"), partition + 1);
1824 printf(_(" phys=(%d, %d, %d) "), pbc, pbh, pbs);
1825 printf(_("logical=(%d, %d, %d)\n"),lbc, lbh, lbs);
1828 /* Same physical / logical ending? */
1829 if (cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) {
1830 printf(_("Partition %d has different physical/logical "
1831 "endings:\n"), partition + 1);
1832 printf(_(" phys=(%d, %d, %d) "), pec, peh, pes);
1833 printf(_("logical=(%d, %d, %d)\n"),lec, leh, les);
1836 /* Ending on cylinder boundary? */
1837 if (peh != (heads - 1) || pes != sectors) {
1838 printf(_("Partition %i does not end on cylinder boundary.\n"),
1844 list_disk_geometry(void)
1846 long long bytes = (total_number_of_sectors << 9);
1847 long megabytes = bytes/1000000;
1849 if (megabytes < 10000)
1850 printf(_("\nDisk %s: %ld MB, %lld bytes\n"),
1851 disk_device, megabytes, bytes);
1853 printf(_("\nDisk %s: %ld.%ld GB, %lld bytes\n"),
1854 disk_device, megabytes/1000, (megabytes/100)%10, bytes);
1855 printf(_("%d heads, %d sectors/track, %d cylinders"),
1856 heads, sectors, cylinders);
1857 if (units_per_sector == 1)
1858 printf(_(", total %llu sectors"),
1859 total_number_of_sectors / (sector_size/512));
1860 printf(_("\nUnits = %s of %d * %d = %d bytes\n\n"),
1862 units_per_sector, sector_size, units_per_sector * sector_size);
1866 * Check whether partition entries are ordered by their starting positions.
1867 * Return 0 if OK. Return i if partition i should have been earlier.
1868 * Two separate checks: primary and logical partitions.
1871 wrong_p_order(int *prev)
1873 const struct pte *pe;
1874 const struct partition *p;
1875 off_t last_p_start_pos = 0, p_start_pos;
1878 for (i = 0 ; i < partitions; i++) {
1881 last_p_start_pos = 0;
1884 if ((p = pe->part_table)->sys_ind) {
1885 p_start_pos = get_partition_start(pe);
1887 if (last_p_start_pos > p_start_pos) {
1893 last_p_start_pos = p_start_pos;
1900 #if ENABLE_FEATURE_FDISK_ADVANCED
1902 * Fix the chain of logicals.
1903 * extended_offset is unchanged, the set of sectors used is unchanged
1904 * The chain is sorted so that sectors increase, and so that
1905 * starting sectors increase.
1907 * After this it may still be that cfdisk doesnt like the table.
1908 * (This is because cfdisk considers expanded parts, from link to
1909 * end of partition, and these may still overlap.)
1911 * sfdisk /dev/hda > ohda; sfdisk /dev/hda < ohda
1915 fix_chain_of_logicals(void)
1917 int j, oj, ojj, sj, sjj;
1918 struct partition *pj,*pjj,tmp;
1920 /* Stage 1: sort sectors but leave sector of part 4 */
1921 /* (Its sector is the global extended_offset.) */
1923 for (j = 5; j < partitions-1; j++) {
1924 oj = ptes[j].offset;
1925 ojj = ptes[j+1].offset;
1927 ptes[j].offset = ojj;
1928 ptes[j+1].offset = oj;
1929 pj = ptes[j].part_table;
1930 set_start_sect(pj, get_start_sect(pj)+oj-ojj);
1931 pjj = ptes[j+1].part_table;
1932 set_start_sect(pjj, get_start_sect(pjj)+ojj-oj);
1933 set_start_sect(ptes[j-1].ext_pointer,
1934 ojj-extended_offset);
1935 set_start_sect(ptes[j].ext_pointer,
1936 oj-extended_offset);
1941 /* Stage 2: sort starting sectors */
1943 for (j = 4; j < partitions-1; j++) {
1944 pj = ptes[j].part_table;
1945 pjj = ptes[j+1].part_table;
1946 sj = get_start_sect(pj);
1947 sjj = get_start_sect(pjj);
1948 oj = ptes[j].offset;
1949 ojj = ptes[j+1].offset;
1950 if (oj+sj > ojj+sjj) {
1954 set_start_sect(pj, ojj+sjj-oj);
1955 set_start_sect(pjj, oj+sj-ojj);
1960 /* Probably something was changed */
1961 for (j = 4; j < partitions; j++)
1962 ptes[j].changed = 1;
1967 fix_partition_table_order(void)
1969 struct pte *pei, *pek;
1972 if (!wrong_p_order(NULL)) {
1973 printf(_("Nothing to do. Ordering is correct already.\n\n"));
1977 while ((i = wrong_p_order(&k)) != 0 && i < 4) {
1978 /* partition i should have come earlier, move it */
1979 /* We have to move data in the MBR */
1980 struct partition *pi, *pk, *pe, pbuf;
1984 pe = pei->ext_pointer;
1985 pei->ext_pointer = pek->ext_pointer;
1986 pek->ext_pointer = pe;
1988 pi = pei->part_table;
1989 pk = pek->part_table;
1991 memmove(&pbuf, pi, sizeof(struct partition));
1992 memmove(pi, pk, sizeof(struct partition));
1993 memmove(pk, &pbuf, sizeof(struct partition));
1995 pei->changed = pek->changed = 1;
1999 fix_chain_of_logicals();
2007 list_table(int xtra)
2009 const struct partition *p;
2013 sun_list_table(xtra);
2017 sgi_list_table(xtra);
2021 list_disk_geometry();
2024 xbsd_print_disklabel(xtra);
2028 /* Heuristic: we list partition 3 of /dev/foo as /dev/foo3,
2029 but if the device name ends in a digit, say /dev/foo1,
2030 then the partition is called /dev/foo1p3. */
2031 w = strlen(disk_device);
2032 if (w && isdigit(disk_device[w-1]))
2037 // 1 12345678901 12345678901 12345678901 12
2038 printf(_("%*s Boot Start End Blocks Id System\n"),
2041 for (i = 0; i < partitions; i++) {
2042 const struct pte *pe = &ptes[i];
2048 if (!p || is_cleared_partition(p))
2051 psects = get_nr_sects(p);
2055 if (sector_size < 1024) {
2056 pblocks /= (1024 / sector_size);
2057 podd = psects % (1024 / sector_size);
2059 if (sector_size > 1024)
2060 pblocks *= (sector_size / 1024);
2062 printf("%s %c %11llu %11llu %11llu%c %2x %s\n",
2063 partname(disk_device, i+1, w+2),
2064 !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */
2066 (unsigned long long) cround(get_partition_start(pe)), /* start */
2067 (unsigned long long) cround(get_partition_start(pe) + psects /* end */
2068 - (psects ? 1 : 0)),
2069 (unsigned long long) pblocks, podd ? '+' : ' ', /* odd flag on end */
2070 p->sys_ind, /* type id */
2071 partition_type(p->sys_ind)); /* type name */
2073 check_consistency(p, i);
2076 /* Is partition table in disk order? It need not be, but... */
2077 /* partition table entries are not checked for correct order if this
2078 is a sgi, sun or aix labeled disk... */
2079 if (LABEL_IS_DOS && wrong_p_order(NULL)) {
2081 printf(_("\nPartition table entries are not in disk order\n"));
2085 #if ENABLE_FEATURE_FDISK_ADVANCED
2087 x_list_table(int extend)
2089 const struct pte *pe;
2090 const struct partition *p;
2093 printf(_("\nDisk %s: %d heads, %d sectors, %d cylinders\n\n"),
2094 disk_device, heads, sectors, cylinders);
2095 printf(_("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n"));
2096 for (i = 0 ; i < partitions; i++) {
2098 p = (extend ? pe->ext_pointer : pe->part_table);
2100 printf("%2d %02x%4d%4d%5d%4d%4d%5d%11u%11u %02x\n",
2101 i + 1, p->boot_ind, p->head,
2103 cylinder(p->sector, p->cyl), p->end_head,
2104 sector(p->end_sector),
2105 cylinder(p->end_sector, p->end_cyl),
2106 get_start_sect(p), get_nr_sects(p), p->sys_ind);
2108 check_consistency(p, i);
2114 #if ENABLE_FEATURE_FDISK_WRITABLE
2116 fill_bounds(off_t *first, off_t *last)
2119 const struct pte *pe = &ptes[0];
2120 const struct partition *p;
2122 for (i = 0; i < partitions; pe++,i++) {
2124 if (!p->sys_ind || IS_EXTENDED(p->sys_ind)) {
2125 first[i] = 0xffffffff;
2128 first[i] = get_partition_start(pe);
2129 last[i] = first[i] + get_nr_sects(p) - 1;
2135 check(int n, unsigned h, unsigned s, unsigned c, off_t start)
2137 off_t total, real_s, real_c;
2139 real_s = sector(s) - 1;
2140 real_c = cylinder(s, c);
2141 total = (real_c * sectors + real_s) * heads + h;
2143 printf(_("Warning: partition %d contains sector 0\n"), n);
2145 printf(_("Partition %d: head %d greater than maximum %d\n"),
2147 if (real_s >= sectors)
2148 printf(_("Partition %d: sector %d greater than "
2149 "maximum %d\n"), n, s, sectors);
2150 if (real_c >= cylinders)
2151 printf(_("Partitions %d: cylinder %llu greater than "
2152 "maximum %d\n"), n, (unsigned long long)real_c + 1, cylinders);
2153 if (cylinders <= 1024 && start != total)
2154 printf(_("Partition %d: previous sectors %llu disagrees with "
2155 "total %llu\n"), n, (unsigned long long)start, (unsigned long long)total);
2163 off_t first[partitions], last[partitions];
2164 struct partition *p;
2166 if (warn_geometry())
2178 fill_bounds(first, last);
2179 for (i = 0; i < partitions; i++) {
2180 struct pte *pe = &ptes[i];
2183 if (p->sys_ind && !IS_EXTENDED(p->sys_ind)) {
2184 check_consistency(p, i);
2185 if (get_partition_start(pe) < first[i])
2186 printf(_("Warning: bad start-of-data in "
2187 "partition %d\n"), i + 1);
2188 check(i + 1, p->end_head, p->end_sector, p->end_cyl,
2190 total += last[i] + 1 - first[i];
2191 for (j = 0; j < i; j++)
2192 if ((first[i] >= first[j] && first[i] <= last[j])
2193 || ((last[i] <= last[j] && last[i] >= first[j]))) {
2194 printf(_("Warning: partition %d overlaps "
2195 "partition %d.\n"), j + 1, i + 1);
2196 total += first[i] >= first[j] ?
2197 first[i] : first[j];
2198 total -= last[i] <= last[j] ?
2204 if (extended_offset) {
2205 struct pte *pex = &ptes[ext_index];
2206 off_t e_last = get_start_sect(pex->part_table) +
2207 get_nr_sects(pex->part_table) - 1;
2209 for (i = 4; i < partitions; i++) {
2211 p = ptes[i].part_table;
2213 if (i != 4 || i + 1 < partitions)
2214 printf(_("Warning: partition %d "
2215 "is empty\n"), i + 1);
2217 else if (first[i] < extended_offset ||
2219 printf(_("Logical partition %d not entirely in "
2220 "partition %d\n"), i + 1, ext_index + 1);
2224 if (total > heads * sectors * cylinders)
2225 printf(_("Total allocated sectors %d greater than the maximum "
2226 "%d\n"), total, heads * sectors * cylinders);
2227 else if ((total = heads * sectors * cylinders - total) != 0)
2228 printf(_("%d unallocated sectors\n"), total);
2232 add_partition(int n, int sys)
2234 char mesg[256]; /* 48 does not suffice in Japanese */
2235 int i, num_read = 0;
2236 struct partition *p = ptes[n].part_table;
2237 struct partition *q = ptes[ext_index].part_table;
2239 off_t start, stop = 0, limit, temp,
2240 first[partitions], last[partitions];
2242 if (p && p->sys_ind) {
2243 printf(_("Partition %d is already defined. Delete "
2244 "it before re-adding it.\n"), n + 1);
2247 fill_bounds(first, last);
2249 start = sector_offset;
2250 if (display_in_cyl_units || !total_number_of_sectors)
2251 llimit = heads * sectors * cylinders - 1;
2253 llimit = total_number_of_sectors - 1;
2255 if (limit != llimit)
2257 if (extended_offset) {
2258 first[ext_index] = extended_offset;
2259 last[ext_index] = get_start_sect(q) +
2260 get_nr_sects(q) - 1;
2263 start = extended_offset + sector_offset;
2264 limit = get_start_sect(q) + get_nr_sects(q) - 1;
2266 if (display_in_cyl_units)
2267 for (i = 0; i < partitions; i++)
2268 first[i] = (cround(first[i]) - 1) * units_per_sector;
2270 snprintf(mesg, sizeof(mesg), _("First %s"), str_units(SINGULAR));
2273 for (i = 0; i < partitions; i++) {
2276 if (start == ptes[i].offset)
2277 start += sector_offset;
2278 lastplusoff = last[i] + ((n < 4) ? 0 : sector_offset);
2279 if (start >= first[i] && start <= lastplusoff)
2280 start = lastplusoff + 1;
2284 if (start >= temp+units_per_sector && num_read) {
2285 printf(_("Sector %"OFF_FMT"d is already allocated\n"), temp);
2289 if (!num_read && start == temp) {
2292 saved_start = start;
2293 start = read_int(cround(saved_start), cround(saved_start), cround(limit),
2295 if (display_in_cyl_units) {
2296 start = (start - 1) * units_per_sector;
2297 if (start < saved_start) start = saved_start;
2301 } while (start != temp || !num_read);
2302 if (n > 4) { /* NOT for fifth partition */
2303 struct pte *pe = &ptes[n];
2305 pe->offset = start - sector_offset;
2306 if (pe->offset == extended_offset) { /* must be corrected */
2308 if (sector_offset == 1)
2313 for (i = 0; i < partitions; i++) {
2314 struct pte *pe = &ptes[i];
2316 if (start < pe->offset && limit >= pe->offset)
2317 limit = pe->offset - 1;
2318 if (start < first[i] && limit >= first[i])
2319 limit = first[i] - 1;
2321 if (start > limit) {
2322 printf(_("No free sectors available\n"));
2327 if (cround(start) == cround(limit)) {
2330 snprintf(mesg, sizeof(mesg),
2331 _("Last %s or +size or +sizeM or +sizeK"),
2332 str_units(SINGULAR));
2333 stop = read_int(cround(start), cround(limit), cround(limit),
2334 cround(start), mesg);
2335 if (display_in_cyl_units) {
2336 stop = stop * units_per_sector - 1;
2342 set_partition(n, 0, start, stop, sys);
2344 set_partition(n - 1, 1, ptes[n].offset, stop, EXTENDED);
2346 if (IS_EXTENDED(sys)) {
2347 struct pte *pe4 = &ptes[4];
2348 struct pte *pen = &ptes[n];
2351 pen->ext_pointer = p;
2352 pe4->offset = extended_offset = start;
2353 pe4->sectorbuffer = xzalloc(sector_size);
2354 pe4->part_table = pt_offset(pe4->sectorbuffer, 0);
2355 pe4->ext_pointer = pe4->part_table + 1;
2364 if (partitions > 5 || ptes[4].part_table->sys_ind) {
2365 struct pte *pe = &ptes[partitions];
2367 pe->sectorbuffer = xzalloc(sector_size);
2368 pe->part_table = pt_offset(pe->sectorbuffer, 0);
2369 pe->ext_pointer = pe->part_table + 1;
2374 add_partition(partitions - 1, LINUX_NATIVE);
2380 int i, free_primary = 0;
2382 if (warn_geometry())
2386 add_sun_partition(get_partition(0, partitions), LINUX_NATIVE);
2390 sgi_add_partition(get_partition(0, partitions), LINUX_NATIVE);
2394 printf(_("\tSorry - this fdisk cannot handle AIX disk labels."
2395 "\n\tIf you want to add DOS-type partitions, create"
2396 "\n\ta new empty DOS partition table first. (Use o.)"
2398 "This will destroy the present disk contents.\n"));
2402 for (i = 0; i < 4; i++)
2403 free_primary += !ptes[i].part_table->sys_ind;
2405 if (!free_primary && partitions >= MAXIMUM_PARTS) {
2406 printf(_("The maximum number of partitions has been created\n"));
2410 if (!free_primary) {
2411 if (extended_offset)
2414 printf(_("You must delete some partition and add "
2415 "an extended partition first\n"));
2417 char c, line[LINE_LENGTH];
2418 snprintf(line, sizeof(line), "%s\n %s\n p primary "
2419 "partition (1-4)\n",
2420 "Command action", (extended_offset ?
2421 "l logical (5 or over)" : "e extended"));
2423 c = read_nonempty(line);
2424 if (c == 'p' || c == 'P') {
2425 i = get_nonexisting_partition(0, 4);
2427 add_partition(i, LINUX_NATIVE);
2430 else if (c == 'l' && extended_offset) {
2434 else if (c == 'e' && !extended_offset) {
2435 i = get_nonexisting_partition(0, 4);
2437 add_partition(i, EXTENDED);
2441 printf(_("Invalid partition number "
2442 "for type '%c'\n"), c);
2453 for (i = 0; i < 3; i++)
2454 if (ptes[i].changed)
2455 ptes[3].changed = 1;
2456 for (i = 3; i < partitions; i++) {
2457 struct pte *pe = &ptes[i];
2460 write_part_table_flag(pe->sectorbuffer);
2461 write_sector(pe->offset, pe->sectorbuffer);
2465 else if (LABEL_IS_SGI) {
2466 /* no test on change? the printf below might be mistaken */
2469 else if (LABEL_IS_SUN) {
2472 for (i = 0; i < 8; i++)
2473 if (ptes[i].changed)
2479 printf(_("The partition table has been altered!\n\n"));
2480 reread_partition_table(1);
2484 reread_partition_table(int leave)
2488 printf(_("Calling ioctl() to re-read partition table\n"));
2490 sleep(2); /* Huh? */
2491 i = ioctl(fd, BLKRRPART);
2494 /* some kernel versions (1.2.x) seem to have trouble
2495 rereading the partition table, but if asked to do it
2496 twice, the second time works. - biro@yggdrasil.com */
2499 i = ioctl(fd, BLKRRPART);
2504 bb_perror_msg("WARNING: rereading partition table "
2505 "failed, kernel still uses old table");
2511 _("\nWARNING: If you have created or modified any DOS 6.x\n"
2512 "partitions, please see the fdisk manual page for additional\n"
2517 if (ENABLE_FEATURE_CLEAN_UP)
2522 #endif /* FEATURE_FDISK_WRITABLE */
2524 #if ENABLE_FEATURE_FDISK_ADVANCED
2525 #define MAX_PER_LINE 16
2527 print_buffer(char *pbuffer)
2531 for (i = 0, l = 0; i < sector_size; i++, l++) {
2533 printf("0x%03X:", i);
2534 printf(" %02X", (unsigned char) pbuffer[i]);
2535 if (l == MAX_PER_LINE - 1) {
2550 printf(_("Device: %s\n"), disk_device);
2551 if (LABEL_IS_SGI || LABEL_IS_SUN)
2552 print_buffer(MBRbuffer);
2554 for (i = 3; i < partitions; i++)
2555 print_buffer(ptes[i].sectorbuffer);
2562 struct pte *pe = &ptes[i];
2563 struct partition *p = pe->part_table;
2566 if (warn_geometry())
2568 if (!p->sys_ind || !get_nr_sects(p) || IS_EXTENDED(p->sys_ind)) {
2569 printf(_("Partition %d has no data area\n"), i + 1);
2572 first = get_partition_start(pe);
2573 new = read_int(first, first, first + get_nr_sects(p) - 1, first,
2574 _("New beginning of data")) - pe->offset;
2576 if (new != get_nr_sects(p)) {
2577 first = get_nr_sects(p) + get_start_sect(p) - new;
2578 set_nr_sects(p, first);
2579 set_start_sect(p, new);
2591 c = tolower(read_nonempty(_("Expert command (m for help): ")));
2599 move_begin(get_partition(0, partitions));
2602 user_cylinders = cylinders =
2603 read_int(1, cylinders, 1048576, 0,
2604 _("Number of cylinders"));
2606 sun_set_ncyl(cylinders);
2616 else if (LABEL_IS_SUN)
2618 else if (LABEL_IS_DOS)
2623 fix_partition_table_order();
2626 #if ENABLE_FEATURE_SGI_LABEL
2631 user_heads = heads = read_int(1, heads, 256, 0,
2632 _("Number of heads"));
2656 user_sectors = sectors = read_int(1, sectors, 63, 0,
2657 _("Number of sectors"));
2658 if (dos_compatible_flag) {
2659 sector_offset = sectors;
2660 printf(_("Warning: setting sector offset for DOS "
2669 write_table(); /* does not return */
2673 sun_set_pcylcount();
2680 #endif /* ADVANCED mode */
2683 is_ide_cdrom_or_tape(const char *device)
2687 struct stat statbuf;
2690 /* No device was given explicitly, and we are trying some
2691 likely things. But opening /dev/hdc may produce errors like
2692 "hdc: tray open or drive not ready"
2693 if it happens to be a CD-ROM drive. It even happens that
2694 the process hangs on the attempt to read a music CD.
2695 So try to be careful. This only works since 2.1.73. */
2697 if (strncmp("/dev/hd", device, 7))
2700 snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5);
2701 procf = fopen(buf, "r");
2702 if (procf != NULL && fgets(buf, sizeof(buf), procf))
2703 is_ide = (!strncmp(buf, "cdrom", 5) ||
2704 !strncmp(buf, "tape", 4));
2706 /* Now when this proc file does not exist, skip the
2707 device when it is read-only. */
2708 if (stat(device, &statbuf) == 0)
2709 is_ide = ((statbuf.st_mode & 0222) == 0);
2718 try(const char *device, int user_specified)
2722 disk_device = device;
2723 if (setjmp(listingbuf))
2725 if (!user_specified)
2726 if (is_ide_cdrom_or_tape(device))
2728 fd = open(disk_device, type_open);
2730 gb = get_boot(try_only);
2731 if (gb > 0) { /* I/O error */
2733 } else if (gb < 0) { /* no DOS signature */
2734 list_disk_geometry();
2738 #if ENABLE_FEATURE_OSF_LABEL
2739 if (btrydev(device) < 0)
2741 printf(_("Disk %s doesn't contain a valid "
2742 "partition table\n"), device);
2747 #if ENABLE_FEATURE_FDISK_WRITABLE
2748 if (!LABEL_IS_SUN && partitions > 4){
2749 delete_partition(ext_index);
2754 /* Ignore other errors, since we try IDE
2755 and SCSI hard disks which may not be
2756 installed on the system. */
2757 if (errno == EACCES) {
2758 printf(_("Cannot open %s\n"), device);
2764 /* for fdisk -l: try all things in /proc/partitions
2765 that look like a partition name (do not end in a digit) */
2770 char line[100], ptname[100], devname[120], *s;
2773 procpt = fopen_or_warn("/proc/partitions", "r");
2775 while (fgets(line, sizeof(line), procpt)) {
2776 if (sscanf(line, " %d %d %d %[^\n ]",
2777 &ma, &mi, &sz, ptname) != 4)
2779 for (s = ptname; *s; s++);
2782 sprintf(devname, "/dev/%s", ptname);
2785 #if ENABLE_FEATURE_CLEAN_UP
2790 #if ENABLE_FEATURE_FDISK_WRITABLE
2792 unknown_command(int c)
2794 printf(_("%c: unknown command\n"), c);
2798 int fdisk_main(int argc, char **argv)
2800 char *str_b, *str_C, *str_H, *str_S;
2804 * fdisk -l [-b sectorsize] [-u] device ...
2805 * fdisk -s [partition] ...
2806 * fdisk [-b sectorsize] [-u] device
2808 * Options -C, -H, -S set the geometry.
2817 OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE,
2819 opt = getopt32(argc, argv, "b:C:H:lS:u" USE_FEATURE_FDISK_BLKSIZE("s"),
2820 &str_b, &str_C, &str_H, &str_S);
2823 if (opt & OPT_b) { // -b
2824 /* Ugly: this sector size is really per device,
2825 so cannot be combined with multiple disks,
2826 and the same goes for the C/H/S options.
2828 sector_size = xatoi_u(str_b);
2829 if (sector_size != 512 && sector_size != 1024 &&
2830 sector_size != 2048)
2833 user_set_sector_size = 1;
2835 if (opt & OPT_C) user_cylinders = xatoi_u(str_C); // -C
2836 if (opt & OPT_H) { // -H
2837 user_heads = xatoi_u(str_H);
2838 if (user_heads <= 0 || user_heads >= 256)
2841 //if (opt & OPT_l) // -l
2842 if (opt & OPT_S) { // -S
2843 user_sectors = xatoi_u(str_S);
2844 if (user_sectors <= 0 || user_sectors >= 64)
2847 if (opt & OPT_u) display_in_cyl_units = 0; // -u
2848 //if (opt & OPT_s) // -s
2850 if (user_set_sector_size && argc != 1)
2851 printf(_("Warning: the -b (set sector size) option should"
2852 " be used with one specified device\n"));
2854 #if ENABLE_FEATURE_FDISK_WRITABLE
2858 type_open = O_RDONLY;
2861 #if defined(__GNUC__)
2862 /* avoid gcc warning:
2863 variable `k' might be clobbered by `longjmp' */
2867 for (k = 0; k < argc; k++)
2870 /* we no longer have default device names */
2871 /* but, we can use /proc/partitions instead */
2875 #if ENABLE_FEATURE_FDISK_WRITABLE
2879 #if ENABLE_FEATURE_FDISK_BLKSIZE
2885 type_open = O_RDONLY;
2890 for (j = 0; j < argc; j++) {
2891 disk_device = argv[j];
2892 fd = open(disk_device, type_open);
2894 fdisk_fatal(unable_to_open);
2895 if (ioctl(fd, BLKGETSIZE, &size))
2896 fdisk_fatal(ioctl_error);
2899 printf("%ld\n", size/2);
2901 printf("%s: %ld\n", argv[j], size/2);
2907 #if ENABLE_FEATURE_FDISK_WRITABLE
2911 disk_device = argv[0];
2915 /* OSF label, and no DOS label */
2916 printf(_("Detected an OSF/1 disklabel on %s, entering "
2917 "disklabel mode.\n"), disk_device);
2919 /*Why do we do this? It seems to be counter-intuitive*/
2920 current_label_type = label_dos;
2921 /* If we return we may want to make an empty DOS label? */
2927 c = tolower(read_nonempty(_("Command (m for help): ")));
2931 toggle_active(get_partition(1, partitions));
2932 else if (LABEL_IS_SUN)
2933 toggle_sunflags(get_partition(1, partitions),
2935 else if (LABEL_IS_SGI)
2936 sgi_set_bootpartition(
2937 get_partition(1, partitions));
2943 printf(_("\nThe current boot file is: %s\n"),
2944 sgi_get_bootfile());
2945 if (read_maybe_empty(_("Please enter the name of the "
2946 "new boot file: ")) == '\n')
2947 printf(_("Boot file unchanged\n"));
2949 sgi_set_bootfile(line_ptr);
2951 #if ENABLE_FEATURE_OSF_LABEL
2958 toggle_dos_compatibility_flag();
2959 else if (LABEL_IS_SUN)
2960 toggle_sunflags(get_partition(1, partitions),
2962 else if (LABEL_IS_SGI)
2963 sgi_set_swappartition(
2964 get_partition(1, partitions));
2971 /* If sgi_label then don't use get_existing_partition,
2972 let the user select a partition, since
2973 get_existing_partition() only works for Linux-like
2975 if (!LABEL_IS_SGI) {
2976 j = get_existing_partition(1, partitions);
2978 j = get_partition(1, partitions);
2981 delete_partition(j);
2990 list_types(get_sys_types());
3009 #if ENABLE_FEATURE_SUN_LABEL
3023 write_table(); /* does not return */
3025 #if ENABLE_FEATURE_FDISK_ADVANCED
3028 printf(_("\n\tSorry, no experts menu for SGI "
3029 "partition tables available.\n\n"));
3040 #endif /* FEATURE_FDISK_WRITABLE */