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 int32_t get_start_sect(const struct partition *p);
224 static int32_t 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++)
260 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
262 extern 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
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);
341 if (errno || v > 0xff) continue;
345 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
347 #include "fdisk_aix.c"
350 unsigned char info[128]; /* Informative text string */
351 unsigned char spare0[14];
353 unsigned char spare1;
355 unsigned char spare2;
358 unsigned char spare1[246]; /* Boot information etc. */
359 unsigned short rspeed; /* Disk rotational speed */
360 unsigned short pcylcount; /* Physical cylinder count */
361 unsigned short sparecyl; /* extra sects per cylinder */
362 unsigned char spare2[4]; /* More magic... */
363 unsigned short ilfact; /* Interleave factor */
364 unsigned short ncyl; /* Data cylinder count */
365 unsigned short nacyl; /* Alt. cylinder count */
366 unsigned short ntrks; /* Tracks per cylinder */
367 unsigned short nsect; /* Sectors per track */
368 unsigned char spare3[4]; /* Even more magic... */
369 struct sun_partinfo {
370 uint32_t start_cylinder;
371 uint32_t num_sectors;
373 unsigned short magic; /* Magic number */
374 unsigned short csum; /* Label xor'd checksum */
376 #define sunlabel ((sun_partition *)MBRbuffer)
378 #define SUN_WHOLE_DISK 5
379 STATIC_OSF void bsd_select(void);
380 STATIC_OSF void xbsd_print_disklabel(int);
381 #include "fdisk_osf.c"
383 #define SGI_VOLHDR 0x00
384 /* 1 and 2 were used for drive types no longer supported by SGI */
385 #define SGI_SWAP 0x03
386 /* 4 and 5 were for filesystem types SGI haven't ever supported on MIPS CPUs */
387 #define SGI_VOLUME 0x06
389 #define SGI_LVOL 0x08
390 #define SGI_RLVOL 0x09
392 #define SGI_XFSLOG 0x0b
395 #define SGI_ENTIRE_DISK SGI_VOLUME
396 #if defined(CONFIG_FEATURE_SGI_LABEL) || defined(CONFIG_FEATURE_SUN_LABEL)
400 return (x << 8) | (x >> 8);
407 ((x & 0xFF00) << 8) |
408 ((x & 0xFF0000) >> 8) |
413 STATIC_SGI const struct systypes sgi_sys_types[];
414 STATIC_SGI unsigned sgi_get_num_sectors(int i);
415 STATIC_SGI int sgi_get_sysid(int i);
416 STATIC_SGI void sgi_delete_partition(int i);
417 STATIC_SGI void sgi_change_sysid(int i, int sys);
418 STATIC_SGI void sgi_list_table(int xtra);
419 STATIC_SGI void sgi_set_xcyl(void);
420 STATIC_SGI int verify_sgi(int verbose);
421 STATIC_SGI void sgi_add_partition(int n, int sys);
422 STATIC_SGI void sgi_set_swappartition(int i);
423 STATIC_SGI const char *sgi_get_bootfile(void);
424 STATIC_SGI void sgi_set_bootfile(const char* aFile);
425 STATIC_SGI void create_sgiinfo(void);
426 STATIC_SGI void sgi_write_table(void);
427 STATIC_SGI void sgi_set_bootpartition(int i);
429 #include "fdisk_sgi.c"
431 STATIC_SUN const struct systypes sun_sys_types[];
432 STATIC_SUN void sun_delete_partition(int i);
433 STATIC_SUN void sun_change_sysid(int i, int sys);
434 STATIC_SUN void sun_list_table(int xtra);
435 STATIC_SUN void sun_set_xcyl(void);
436 STATIC_SUN void add_sun_partition(int n, int sys);
437 STATIC_SUN void sun_set_alt_cyl(void);
438 STATIC_SUN void sun_set_ncyl(int cyl);
439 STATIC_SUN void sun_set_xcyl(void);
440 STATIC_SUN void sun_set_ilfact(void);
441 STATIC_SUN void sun_set_rspeed(void);
442 STATIC_SUN void sun_set_pcylcount(void);
443 STATIC_SUN void toggle_sunflags(int i, unsigned char mask);
444 STATIC_SUN void verify_sun(void);
445 STATIC_SUN void sun_write_table(void);
446 #include "fdisk_sun.c"
448 /* DOS partition types */
450 static const struct systypes i386_sys_types[] = {
453 { "\x04" "FAT16 <32M" },
454 { "\x05" "Extended" }, /* DOS 3.3+ extended partition */
455 { "\x06" "FAT16" }, /* DOS 16-bit >=32M */
456 { "\x07" "HPFS/NTFS" }, /* OS/2 IFS, eg, HPFS or NTFS or QNX */
457 { "\x0a" "OS/2 Boot Manager" },/* OS/2 Boot Manager */
458 { "\x0b" "Win95 FAT32" },
459 { "\x0c" "Win95 FAT32 (LBA)" },/* LBA really is 'Extended Int 13h' */
460 { "\x0e" "Win95 FAT16 (LBA)" },
461 { "\x0f" "Win95 Ext'd (LBA)" },
462 { "\x11" "Hidden FAT12" },
463 { "\x12" "Compaq diagnostics" },
464 { "\x14" "Hidden FAT16 <32M" },
465 { "\x16" "Hidden FAT16" },
466 { "\x17" "Hidden HPFS/NTFS" },
467 { "\x1b" "Hidden Win95 FAT32" },
468 { "\x1c" "Hidden Win95 FAT32 (LBA)" },
469 { "\x1e" "Hidden Win95 FAT16 (LBA)" },
470 { "\x3c" "PartitionMagic recovery" },
471 { "\x41" "PPC PReP Boot" },
473 { "\x63" "GNU HURD or SysV" }, /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */
474 { "\x80" "Old Minix" }, /* Minix 1.4a and earlier */
475 { "\x81" "Minix / old Linux" },/* Minix 1.4b and later */
476 { "\x82" "Linux swap" }, /* also Solaris */
478 { "\x84" "OS/2 hidden C: drive" },
479 { "\x85" "Linux extended" },
480 { "\x86" "NTFS volume set" },
481 { "\x87" "NTFS volume set" },
482 { "\x8e" "Linux LVM" },
483 { "\x9f" "BSD/OS" }, /* BSDI */
484 { "\xa0" "IBM Thinkpad hibernation" },
485 { "\xa5" "FreeBSD" }, /* various BSD flavours */
486 { "\xa6" "OpenBSD" },
487 { "\xa8" "Darwin UFS" },
489 { "\xab" "Darwin boot" },
490 { "\xb7" "BSDI fs" },
491 { "\xb8" "BSDI swap" },
492 { "\xbe" "Solaris boot" },
493 { "\xeb" "BeOS fs" },
494 { "\xee" "EFI GPT" }, /* Intel EFI GUID Partition Table */
495 { "\xef" "EFI (FAT-12/16/32)" },/* Intel EFI System Partition */
496 { "\xf0" "Linux/PA-RISC boot" },/* Linux/PA-RISC boot loader */
497 { "\xf2" "DOS secondary" }, /* DOS 3.3+ secondary */
498 { "\xfd" "Linux raid autodetect" },/* New (2.2.x) raid partition with
499 autodetect using persistent
501 #if 0 /* ENABLE_WEIRD_PARTITION_TYPES */
502 { "\x02" "XENIX root" },
503 { "\x03" "XENIX usr" },
504 { "\x08" "AIX" }, /* AIX boot (AIX -- PS/2 port) or SplitDrive */
505 { "\x09" "AIX bootable" }, /* AIX data or Coherent */
507 { "\x18" "AST SmartSleep" },
508 { "\x24" "NEC DOS" },
510 { "\x40" "Venix 80286" },
512 { "\x4e" "QNX4.x 2nd part" },
513 { "\x4f" "QNX4.x 3rd part" },
514 { "\x50" "OnTrack DM" },
515 { "\x51" "OnTrack DM6 Aux1" }, /* (or Novell) */
516 { "\x52" "CP/M" }, /* CP/M or Microport SysV/AT */
517 { "\x53" "OnTrack DM6 Aux3" },
518 { "\x54" "OnTrackDM6" },
519 { "\x55" "EZ-Drive" },
520 { "\x56" "Golden Bow" },
521 { "\x5c" "Priam Edisk" },
522 { "\x61" "SpeedStor" },
523 { "\x64" "Novell Netware 286" },
524 { "\x65" "Novell Netware 386" },
525 { "\x70" "DiskSecure Multi-Boot" },
528 { "\x94" "Amoeba BBT" }, /* (bad block table) */
529 { "\xa7" "NeXTSTEP" },
530 { "\xbb" "Boot Wizard hidden" },
531 { "\xc1" "DRDOS/sec (FAT-12)" },
532 { "\xc4" "DRDOS/sec (FAT-16 < 32M)" },
533 { "\xc6" "DRDOS/sec (FAT-16)" },
535 { "\xda" "Non-FS data" },
536 { "\xdb" "CP/M / CTOS / ..." },/* CP/M or Concurrent CP/M or
537 Concurrent DOS or CTOS */
538 { "\xde" "Dell Utility" }, /* Dell PowerEdge Server utilities */
539 { "\xdf" "BootIt" }, /* BootIt EMBRM */
540 { "\xe1" "DOS access" }, /* DOS access or SpeedStor 12-bit FAT
541 extended partition */
542 { "\xe3" "DOS R/O" }, /* DOS R/O or SpeedStor */
543 { "\xe4" "SpeedStor" }, /* SpeedStor 16-bit FAT extended
544 partition < 1024 cyl. */
545 { "\xf1" "SpeedStor" },
546 { "\xf4" "SpeedStor" }, /* SpeedStor large partition */
547 { "\xfe" "LANstep" }, /* SpeedStor >1024 cyl. or LANstep */
548 { "\xff" "BBT" }, /* Xenix Bad Block Table */
554 #if ENABLE_FEATURE_FDISK_WRITABLE
555 /* start_sect and nr_sects are stored little endian on all machines */
556 /* moreover, they are not aligned correctly */
558 store4_little_endian(unsigned char *cp, unsigned val)
565 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
568 read4_little_endian(const unsigned char *cp)
570 return cp[0] + (cp[1] << 8) + (cp[2] << 16) + (cp[3] << 24);
573 #if ENABLE_FEATURE_FDISK_WRITABLE
575 set_start_sect(struct partition *p, unsigned start_sect)
577 store4_little_endian(p->start4, start_sect);
582 get_start_sect(const struct partition *p)
584 return read4_little_endian(p->start4);
587 #if ENABLE_FEATURE_FDISK_WRITABLE
589 set_nr_sects(struct partition *p, int32_t nr_sects)
591 store4_little_endian(p->size4, nr_sects);
596 get_nr_sects(const struct partition *p)
598 return read4_little_endian(p->size4);
601 /* normally O_RDWR, -l option gives O_RDONLY */
602 static int type_open = O_RDWR;
605 static int ext_index; /* the prime extended partition */
606 static int listing; /* no aborts for fdisk -l */
607 static int dos_compatible_flag = ~0;
608 #if ENABLE_FEATURE_FDISK_WRITABLE
609 static int dos_changed;
610 static int nowarn; /* no warnings for fdisk -l/-s */
615 static unsigned user_cylinders, user_heads, user_sectors;
616 static unsigned pt_heads, pt_sectors;
617 static unsigned kern_heads, kern_sectors;
619 static off_t extended_offset; /* offset of link pointers */
621 static unsigned long long total_number_of_sectors;
624 static jmp_buf listingbuf;
626 static void fdisk_fatal(enum failure why)
632 longjmp(listingbuf, 1);
637 message = "\nUnable to open %s";
640 message = "\nUnable to read %s";
643 message = "\nUnable to seek on %s";
645 case unable_to_write:
646 message = "\nUnable to write %s";
649 message = "\nBLKGETSIZE ioctl failed on %s";
652 message = "\nFatal error";
655 bb_error_msg_and_die(message, disk_device);
659 seek_sector(off_t secno)
661 off_t offset = secno * sector_size;
662 if (lseek(fd, offset, SEEK_SET) == (off_t) -1)
663 fdisk_fatal(unable_to_seek);
666 #if ENABLE_FEATURE_FDISK_WRITABLE
668 write_sector(off_t secno, char *buf)
671 if (write(fd, buf, sector_size) != sector_size)
672 fdisk_fatal(unable_to_write);
676 /* Allocate a buffer and read a partition table sector */
678 read_pte(struct pte *pe, off_t offset)
681 pe->sectorbuffer = (char *) xmalloc(sector_size);
683 if (read(fd, pe->sectorbuffer, sector_size) != sector_size)
684 fdisk_fatal(unable_to_read);
685 #if ENABLE_FEATURE_FDISK_WRITABLE
688 pe->part_table = pe->ext_pointer = NULL;
692 get_partition_start(const struct pte *pe)
694 return pe->offset + get_start_sect(pe->part_table);
697 #if ENABLE_FEATURE_FDISK_WRITABLE
699 * Avoid warning about DOS partitions when no DOS partition was changed.
700 * Here a heuristic "is probably dos partition".
701 * We might also do the opposite and warn in all cases except
702 * for "is probably nondos partition".
705 is_dos_partition(int t)
707 return (t == 1 || t == 4 || t == 6 ||
708 t == 0x0b || t == 0x0c || t == 0x0e ||
709 t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 ||
710 t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 ||
711 t == 0xc1 || t == 0xc4 || t == 0xc6);
718 puts(_("Command action"));
719 puts(_("\ta\ttoggle a read only flag")); /* sun */
720 puts(_("\tb\tedit bsd disklabel"));
721 puts(_("\tc\ttoggle the mountable flag")); /* sun */
722 puts(_("\td\tdelete a partition"));
723 puts(_("\tl\tlist known partition types"));
724 puts(_("\tm\tprint this menu"));
725 puts(_("\tn\tadd a new partition"));
726 puts(_("\to\tcreate a new empty DOS partition table"));
727 puts(_("\tp\tprint the partition table"));
728 puts(_("\tq\tquit without saving changes"));
729 puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
730 puts(_("\tt\tchange a partition's system id"));
731 puts(_("\tu\tchange display/entry units"));
732 puts(_("\tv\tverify the partition table"));
733 puts(_("\tw\twrite table to disk and exit"));
734 #if ENABLE_FEATURE_FDISK_ADVANCED
735 puts(_("\tx\textra functionality (experts only)"));
739 puts(_("Command action"));
740 puts(_("\ta\tselect bootable partition")); /* sgi flavour */
741 puts(_("\tb\tedit bootfile entry")); /* sgi */
742 puts(_("\tc\tselect sgi swap partition")); /* sgi flavour */
743 puts(_("\td\tdelete a partition"));
744 puts(_("\tl\tlist known partition types"));
745 puts(_("\tm\tprint this menu"));
746 puts(_("\tn\tadd a new partition"));
747 puts(_("\to\tcreate a new empty DOS partition table"));
748 puts(_("\tp\tprint the partition table"));
749 puts(_("\tq\tquit without saving changes"));
750 puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
751 puts(_("\tt\tchange a partition's system id"));
752 puts(_("\tu\tchange display/entry units"));
753 puts(_("\tv\tverify the partition table"));
754 puts(_("\tw\twrite table to disk and exit"));
757 puts(_("Command action"));
758 puts(_("\tm\tprint this menu"));
759 puts(_("\to\tcreate a new empty DOS partition table"));
760 puts(_("\tq\tquit without saving changes"));
761 puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
764 puts(_("Command action"));
765 puts(_("\ta\ttoggle a bootable flag"));
766 puts(_("\tb\tedit bsd disklabel"));
767 puts(_("\tc\ttoggle the dos compatibility flag"));
768 puts(_("\td\tdelete a partition"));
769 puts(_("\tl\tlist known partition types"));
770 puts(_("\tm\tprint this menu"));
771 puts(_("\tn\tadd a new partition"));
772 puts(_("\to\tcreate a new empty DOS partition table"));
773 puts(_("\tp\tprint the partition table"));
774 puts(_("\tq\tquit without saving changes"));
775 puts(_("\ts\tcreate a new empty Sun disklabel")); /* sun */
776 puts(_("\tt\tchange a partition's system id"));
777 puts(_("\tu\tchange display/entry units"));
778 puts(_("\tv\tverify the partition table"));
779 puts(_("\tw\twrite table to disk and exit"));
780 #if ENABLE_FEATURE_FDISK_ADVANCED
781 puts(_("\tx\textra functionality (experts only)"));
785 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
788 #if ENABLE_FEATURE_FDISK_ADVANCED
793 puts(_("Command action"));
794 puts(_("\ta\tchange number of alternate cylinders")); /*sun*/
795 puts(_("\tc\tchange number of cylinders"));
796 puts(_("\td\tprint the raw data in the partition table"));
797 puts(_("\te\tchange number of extra sectors per cylinder"));/*sun*/
798 puts(_("\th\tchange number of heads"));
799 puts(_("\ti\tchange interleave factor")); /*sun*/
800 puts(_("\to\tchange rotation speed (rpm)")); /*sun*/
801 puts(_("\tm\tprint this menu"));
802 puts(_("\tp\tprint the partition table"));
803 puts(_("\tq\tquit without saving changes"));
804 puts(_("\tr\treturn to main menu"));
805 puts(_("\ts\tchange number of sectors/track"));
806 puts(_("\tv\tverify the partition table"));
807 puts(_("\tw\twrite table to disk and exit"));
808 puts(_("\ty\tchange number of physical cylinders")); /*sun*/
811 puts(_("Command action"));
812 puts(_("\tb\tmove beginning of data in a partition")); /* !sun */
813 puts(_("\tc\tchange number of cylinders"));
814 puts(_("\td\tprint the raw data in the partition table"));
815 puts(_("\te\tlist extended partitions")); /* !sun */
816 puts(_("\tg\tcreate an IRIX (SGI) partition table"));/* sgi */
817 puts(_("\th\tchange number of heads"));
818 puts(_("\tm\tprint this menu"));
819 puts(_("\tp\tprint the partition table"));
820 puts(_("\tq\tquit without saving changes"));
821 puts(_("\tr\treturn to main menu"));
822 puts(_("\ts\tchange number of sectors/track"));
823 puts(_("\tv\tverify the partition table"));
824 puts(_("\tw\twrite table to disk and exit"));
827 puts(_("Command action"));
828 puts(_("\tb\tmove beginning of data in a partition")); /* !sun */
829 puts(_("\tc\tchange number of cylinders"));
830 puts(_("\td\tprint the raw data in the partition table"));
831 puts(_("\te\tlist extended partitions")); /* !sun */
832 puts(_("\tg\tcreate an IRIX (SGI) partition table"));/* sgi */
833 puts(_("\th\tchange number of heads"));
834 puts(_("\tm\tprint this menu"));
835 puts(_("\tp\tprint the partition table"));
836 puts(_("\tq\tquit without saving changes"));
837 puts(_("\tr\treturn to main menu"));
838 puts(_("\ts\tchange number of sectors/track"));
839 puts(_("\tv\tverify the partition table"));
840 puts(_("\tw\twrite table to disk and exit"));
842 puts(_("Command action"));
843 puts(_("\tb\tmove beginning of data in a partition")); /* !sun */
844 puts(_("\tc\tchange number of cylinders"));
845 puts(_("\td\tprint the raw data in the partition table"));
846 puts(_("\te\tlist extended partitions")); /* !sun */
847 puts(_("\tf\tfix partition order")); /* !sun, !aix, !sgi */
848 #if ENABLE_FEATURE_SGI_LABEL
849 puts(_("\tg\tcreate an IRIX (SGI) partition table"));/* sgi */
851 puts(_("\th\tchange number of heads"));
852 puts(_("\tm\tprint this menu"));
853 puts(_("\tp\tprint the partition table"));
854 puts(_("\tq\tquit without saving changes"));
855 puts(_("\tr\treturn to main menu"));
856 puts(_("\ts\tchange number of sectors/track"));
857 puts(_("\tv\tverify the partition table"));
858 puts(_("\tw\twrite table to disk and exit"));
861 #endif /* ADVANCED mode */
863 #if ENABLE_FEATURE_FDISK_WRITABLE
864 static const struct systypes *
868 LABEL_IS_SUN ? sun_sys_types :
869 LABEL_IS_SGI ? sgi_sys_types :
873 #define get_sys_types() i386_sys_types
874 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
876 static const char *partition_type(unsigned char type)
879 const struct systypes *types = get_sys_types();
881 for (i = 0; types[i].name; i++)
882 if ((unsigned char )types[i].name[0] == type)
883 return types[i].name + 1;
889 #if ENABLE_FEATURE_FDISK_WRITABLE
893 return LABEL_IS_SUN ? sunlabel->infos[i].id :
894 (LABEL_IS_SGI ? sgi_get_sysid(i) :
895 ptes[i].part_table->sys_ind);
898 void list_types(const struct systypes *sys)
900 unsigned last[4], done = 0, next = 0, size;
903 for (i = 0; sys[i].name; i++);
906 for (i = 3; i >= 0; i--)
907 last[3 - i] = done += (size + i - done) / (i + 1);
911 printf("%c%2x %-15.15s", i ? ' ' : '\n',
912 (unsigned char)sys[next].name[0],
913 partition_type((unsigned char)sys[next].name[0]));
914 next = last[i++] + done;
915 if (i > 3 || next >= last[i]) {
919 } while (done < last[0]);
922 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
925 is_cleared_partition(const struct partition *p)
927 return !(!p || p->boot_ind || p->head || p->sector || p->cyl ||
928 p->sys_ind || p->end_head || p->end_sector || p->end_cyl ||
929 get_start_sect(p) || get_nr_sects(p));
933 clear_partition(struct partition *p)
937 memset(p, 0, sizeof(struct partition));
940 #if ENABLE_FEATURE_FDISK_WRITABLE
942 set_partition(int i, int doext, off_t start, off_t stop, int sysid)
948 p = ptes[i].ext_pointer;
949 offset = extended_offset;
951 p = ptes[i].part_table;
952 offset = ptes[i].offset;
956 set_start_sect(p, start - offset);
957 set_nr_sects(p, stop - start + 1);
958 if (dos_compatible_flag && (start/(sectors*heads) > 1023))
959 start = heads*sectors*1024 - 1;
960 set_hsc(p->head, p->sector, p->cyl, start);
961 if (dos_compatible_flag && (stop/(sectors*heads) > 1023))
962 stop = heads*sectors*1024 - 1;
963 set_hsc(p->end_head, p->end_sector, p->end_cyl, stop);
969 test_c(const char **m, const char *mesg)
973 printf(_("You must set"));
985 const char *m = NULL;
989 prev = test_c(&m, _("heads"));
991 prev = test_c(&m, _("sectors"));
993 prev = test_c(&m, _("cylinders"));
998 #if ENABLE_FEATURE_FDISK_WRITABLE
999 "You can do this from the extra functions menu.\n"
1001 , prev ? _(" and ") : " ", m);
1006 static void update_units(void)
1008 int cyl_units = heads * sectors;
1010 if (display_in_cyl_units && cyl_units)
1011 units_per_sector = cyl_units;
1013 units_per_sector = 1; /* in sectors */
1016 #if ENABLE_FEATURE_FDISK_WRITABLE
1018 warn_cylinders(void)
1020 if (LABEL_IS_DOS && cylinders > 1024 && !nowarn)
1022 "The number of cylinders for this disk is set to %d.\n"
1023 "There is nothing wrong with that, but this is larger than 1024,\n"
1024 "and could in certain setups cause problems with:\n"
1025 "1) software that runs at boot time (e.g., old versions of LILO)\n"
1026 "2) booting and partitioning software from other OSs\n"
1027 " (e.g., DOS FDISK, OS/2 FDISK)\n"),
1033 read_extended(int ext)
1037 struct partition *p, *q;
1041 pex->ext_pointer = pex->part_table;
1043 p = pex->part_table;
1044 if (!get_start_sect(p)) {
1045 printf(_("Bad offset in primary extended partition\n"));
1049 while (IS_EXTENDED(p->sys_ind)) {
1050 struct pte *pe = &ptes[partitions];
1052 if (partitions >= MAXIMUM_PARTS) {
1053 /* This is not a Linux restriction, but
1054 this program uses arrays of size MAXIMUM_PARTS.
1055 Do not try to 'improve' this test. */
1056 struct pte *pre = &ptes[partitions-1];
1057 #if ENABLE_FEATURE_FDISK_WRITABLE
1058 printf(_("Warning: deleting partitions after %d\n"),
1062 clear_partition(pre->ext_pointer);
1066 read_pte(pe, extended_offset + get_start_sect(p));
1068 if (!extended_offset)
1069 extended_offset = get_start_sect(p);
1071 q = p = pt_offset(pe->sectorbuffer, 0);
1072 for (i = 0; i < 4; i++, p++) if (get_nr_sects(p)) {
1073 if (IS_EXTENDED(p->sys_ind)) {
1074 if (pe->ext_pointer)
1075 printf(_("Warning: extra link "
1076 "pointer in partition table"
1077 " %d\n"), partitions + 1);
1079 pe->ext_pointer = p;
1080 } else if (p->sys_ind) {
1082 printf(_("Warning: ignoring extra "
1083 "data in partition table"
1084 " %d\n"), partitions + 1);
1090 /* very strange code here... */
1091 if (!pe->part_table) {
1092 if (q != pe->ext_pointer)
1095 pe->part_table = q + 1;
1097 if (!pe->ext_pointer) {
1098 if (q != pe->part_table)
1099 pe->ext_pointer = q;
1101 pe->ext_pointer = q + 1;
1104 p = pe->ext_pointer;
1108 #if ENABLE_FEATURE_FDISK_WRITABLE
1109 /* remove empty links */
1111 for (i = 4; i < partitions; i++) {
1112 struct pte *pe = &ptes[i];
1114 if (!get_nr_sects(pe->part_table) &&
1115 (partitions > 5 || ptes[4].part_table->sys_ind)) {
1116 printf("omitting empty partition (%d)\n", i+1);
1117 delete_partition(i);
1118 goto remove; /* numbering changed */
1124 #if ENABLE_FEATURE_FDISK_WRITABLE
1126 create_doslabel(void)
1131 _("Building a new DOS disklabel. Changes will remain in memory only,\n"
1132 "until you decide to write them. After that, of course, the previous\n"
1133 "content won't be recoverable.\n\n"));
1135 current_label_type = label_dos;
1137 #if ENABLE_FEATURE_OSF_LABEL
1138 possibly_osf_label = 0;
1142 for (i = 510-64; i < 510; i++)
1144 write_part_table_flag(MBRbuffer);
1145 extended_offset = 0;
1146 set_all_unchanged();
1148 get_boot(create_empty_dos);
1150 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
1153 get_sectorsize(void)
1155 if (!user_set_sector_size) {
1157 if (ioctl(fd, BLKSSZGET, &arg) == 0)
1159 if (sector_size != DEFAULT_SECTOR_SIZE)
1160 printf(_("Note: sector size is %d (not %d)\n"),
1161 sector_size, DEFAULT_SECTOR_SIZE);
1166 get_kernel_geometry(void)
1168 struct hd_geometry geometry;
1170 if (!ioctl(fd, HDIO_GETGEO, &geometry)) {
1171 kern_heads = geometry.heads;
1172 kern_sectors = geometry.sectors;
1173 /* never use geometry.cylinders - it is truncated */
1178 get_partition_table_geometry(void)
1180 const unsigned char *bufp = (const unsigned char *)MBRbuffer;
1181 struct partition *p;
1182 int i, h, s, hh, ss;
1186 if (!(valid_part_table_flag((char*)bufp)))
1190 for (i = 0; i < 4; i++) {
1191 p = pt_offset(bufp, i);
1192 if (p->sys_ind != 0) {
1193 h = p->end_head + 1;
1194 s = (p->end_sector & 077);
1199 } else if (hh != h || ss != s)
1204 if (!first && !bad) {
1214 unsigned long long bytes; /* really u64 */
1217 sec_fac = sector_size / 512;
1218 #if ENABLE_FEATURE_SUN_LABEL
1219 guess_device_type();
1221 heads = cylinders = sectors = 0;
1222 kern_heads = kern_sectors = 0;
1223 pt_heads = pt_sectors = 0;
1225 get_kernel_geometry();
1226 get_partition_table_geometry();
1228 heads = user_heads ? user_heads :
1229 pt_heads ? pt_heads :
1230 kern_heads ? kern_heads : 255;
1231 sectors = user_sectors ? user_sectors :
1232 pt_sectors ? pt_sectors :
1233 kern_sectors ? kern_sectors : 63;
1234 if (ioctl(fd, BLKGETSIZE64, &bytes) == 0) {
1237 unsigned long longsectors;
1239 if (ioctl(fd, BLKGETSIZE, &longsectors))
1241 bytes = ((unsigned long long) longsectors) << 9;
1244 total_number_of_sectors = (bytes >> 9);
1247 if (dos_compatible_flag)
1248 sector_offset = sectors;
1250 cylinders = total_number_of_sectors / (heads * sectors * sec_fac);
1252 cylinders = user_cylinders;
1256 * Read MBR. Returns:
1257 * -1: no 0xaa55 flag present (possibly entire disk BSD)
1258 * 0: found or created label
1262 get_boot(enum action what)
1268 for (i = 0; i < 4; i++) {
1269 struct pte *pe = &ptes[i];
1271 pe->part_table = pt_offset(MBRbuffer, i);
1272 pe->ext_pointer = NULL;
1274 pe->sectorbuffer = MBRbuffer;
1275 #if ENABLE_FEATURE_FDISK_WRITABLE
1276 pe->changed = (what == create_empty_dos);
1280 #if ENABLE_FEATURE_SUN_LABEL
1281 if (what == create_empty_sun && check_sun_label())
1285 memset(MBRbuffer, 0, 512);
1287 #if ENABLE_FEATURE_FDISK_WRITABLE
1288 if (what == create_empty_dos)
1289 goto got_dos_table; /* skip reading disk */
1291 if ((fd = open(disk_device, type_open)) < 0) {
1292 if ((fd = open(disk_device, O_RDONLY)) < 0) {
1293 if (what == try_only)
1295 fdisk_fatal(unable_to_open);
1297 printf(_("You will not be able to write "
1298 "the partition table.\n"));
1301 if (512 != read(fd, MBRbuffer, 512)) {
1302 if (what == try_only)
1304 fdisk_fatal(unable_to_read);
1307 if ((fd = open(disk_device, O_RDONLY)) < 0)
1309 if (512 != read(fd, MBRbuffer, 512))
1317 #if ENABLE_FEATURE_SUN_LABEL
1318 if (check_sun_label())
1322 #if ENABLE_FEATURE_SGI_LABEL
1323 if (check_sgi_label())
1327 #if ENABLE_FEATURE_AIX_LABEL
1328 if (check_aix_label())
1332 #if ENABLE_FEATURE_OSF_LABEL
1333 if (check_osf_label()) {
1334 possibly_osf_label = 1;
1335 if (!valid_part_table_flag(MBRbuffer)) {
1336 current_label_type = label_osf;
1339 printf(_("This disk has both DOS and BSD magic.\n"
1340 "Give the 'b' command to go to BSD mode.\n"));
1344 #if ENABLE_FEATURE_FDISK_WRITABLE
1348 if (!valid_part_table_flag(MBRbuffer)) {
1349 #ifndef CONFIG_FEATURE_FDISK_WRITABLE
1354 printf(_("Device contains neither a valid DOS "
1355 "partition table, nor Sun, SGI or OSF "
1358 #if ENABLE_FEATURE_SUN_LABEL
1367 case create_empty_dos:
1368 #if ENABLE_FEATURE_SUN_LABEL
1369 case create_empty_sun:
1373 bb_error_msg_and_die(_("internal error"));
1375 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
1378 #if ENABLE_FEATURE_FDISK_WRITABLE
1383 for (i = 0; i < 4; i++) {
1384 struct pte *pe = &ptes[i];
1386 if (IS_EXTENDED(pe->part_table->sys_ind)) {
1387 if (partitions != 4)
1388 printf(_("Ignoring extra extended "
1389 "partition %d\n"), i + 1);
1395 for (i = 3; i < partitions; i++) {
1396 struct pte *pe = &ptes[i];
1398 if (!valid_part_table_flag(pe->sectorbuffer)) {
1399 printf(_("Warning: invalid flag 0x%02x,0x%02x of partition "
1400 "table %d will be corrected by w(rite)\n"),
1401 pe->sectorbuffer[510],
1402 pe->sectorbuffer[511],
1404 #if ENABLE_FEATURE_FDISK_WRITABLE
1413 #if ENABLE_FEATURE_FDISK_WRITABLE
1415 * Print the message MESG, then read an integer between LOW and HIGH (inclusive).
1416 * If the user hits Enter, DFLT is returned.
1417 * Answers like +10 are interpreted as offsets from BASE.
1419 * There is no default if DFLT is not between LOW and HIGH.
1422 read_int(unsigned low, unsigned dflt, unsigned high, unsigned base, char *mesg)
1426 const char *fmt = "%s (%u-%u, default %u): ";
1428 if (dflt < low || dflt > high) {
1429 fmt = "%s (%u-%u): ";
1434 int use_default = default_ok;
1436 /* ask question and read answer */
1438 printf(fmt, mesg, low, high, dflt);
1439 read_maybe_empty("");
1440 } while (*line_ptr != '\n' && !isdigit(*line_ptr)
1441 && *line_ptr != '-' && *line_ptr != '+');
1443 if (*line_ptr == '+' || *line_ptr == '-') {
1444 int minus = (*line_ptr == '-');
1447 i = atoi(line_ptr + 1);
1449 while (isdigit(*++line_ptr))
1452 switch (*line_ptr) {
1455 if (!display_in_cyl_units)
1456 i *= heads * sectors;
1470 absolute = 1000000000;
1476 unsigned long long bytes;
1479 bytes = (unsigned long long) i * absolute;
1480 unit = sector_size * units_per_sector;
1481 bytes += unit/2; /* round */
1490 while (isdigit(*line_ptr)) {
1496 printf(_("Using default value %u\n"), i = dflt);
1497 if (i >= low && i <= high)
1500 printf(_("Value is out of range\n"));
1506 get_partition(int warn, int max)
1511 i = read_int(1, 0, max, 0, _("Partition number")) - 1;
1515 if ((!LABEL_IS_SUN && !LABEL_IS_SGI && !pe->part_table->sys_ind)
1516 || (LABEL_IS_SUN && (!sunlabel->partitions[i].num_sectors || !sunlabel->infos[i].id))
1517 || (LABEL_IS_SGI && !sgi_get_num_sectors(i))
1519 printf(_("Warning: partition %d has empty type\n"), i+1);
1526 get_existing_partition(int warn, int max)
1531 for (i = 0; i < max; i++) {
1532 struct pte *pe = &ptes[i];
1533 struct partition *p = pe->part_table;
1535 if (p && !is_cleared_partition(p)) {
1542 printf(_("Selected partition %d\n"), pno+1);
1545 printf(_("No partition is defined yet!\n"));
1549 return get_partition(warn, max);
1553 get_nonexisting_partition(int warn, int max)
1558 for (i = 0; i < max; i++) {
1559 struct pte *pe = &ptes[i];
1560 struct partition *p = pe->part_table;
1562 if (p && is_cleared_partition(p)) {
1569 printf(_("Selected partition %d\n"), pno+1);
1572 printf(_("All primary partitions have been defined already!\n"));
1576 return get_partition(warn, max);
1583 display_in_cyl_units = !display_in_cyl_units;
1585 printf(_("Changing display/entry units to %s\n"),
1590 toggle_active(int i)
1592 struct pte *pe = &ptes[i];
1593 struct partition *p = pe->part_table;
1595 if (IS_EXTENDED(p->sys_ind) && !p->boot_ind)
1596 printf(_("WARNING: Partition %d is an extended partition\n"), i + 1);
1597 p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG);
1602 toggle_dos_compatibility_flag(void)
1604 dos_compatible_flag = ~dos_compatible_flag;
1605 if (dos_compatible_flag) {
1606 sector_offset = sectors;
1607 printf(_("DOS Compatibility flag is set\n"));
1611 printf(_("DOS Compatibility flag is not set\n"));
1616 delete_partition(int i)
1618 struct pte *pe = &ptes[i];
1619 struct partition *p = pe->part_table;
1620 struct partition *q = pe->ext_pointer;
1622 /* Note that for the fifth partition (i == 4) we don't actually
1623 * decrement partitions.
1626 if (warn_geometry())
1627 return; /* C/H/S not set */
1631 sun_delete_partition(i);
1635 sgi_delete_partition(i);
1640 if (IS_EXTENDED(p->sys_ind) && i == ext_index) {
1642 ptes[ext_index].ext_pointer = NULL;
1643 extended_offset = 0;
1649 if (!q->sys_ind && i > 4) {
1650 /* the last one in the chain - just delete */
1653 clear_partition(ptes[i].ext_pointer);
1654 ptes[i].changed = 1;
1656 /* not the last one - further ones will be moved down */
1658 /* delete this link in the chain */
1659 p = ptes[i-1].ext_pointer;
1661 set_start_sect(p, get_start_sect(q));
1662 set_nr_sects(p, get_nr_sects(q));
1663 ptes[i-1].changed = 1;
1664 } else if (partitions > 5) { /* 5 will be moved to 4 */
1665 /* the first logical in a longer chain */
1668 if (pe->part_table) /* prevent SEGFAULT */
1669 set_start_sect(pe->part_table,
1670 get_partition_start(pe) -
1672 pe->offset = extended_offset;
1676 if (partitions > 5) {
1678 while (i < partitions) {
1679 ptes[i] = ptes[i+1];
1683 /* the only logical: clear only */
1684 clear_partition(ptes[i].part_table);
1691 int i, sys, origsys;
1692 struct partition *p;
1694 /* If sgi_label then don't use get_existing_partition,
1695 let the user select a partition, since get_existing_partition()
1696 only works for Linux like partition tables. */
1697 if (!LABEL_IS_SGI) {
1698 i = get_existing_partition(0, partitions);
1700 i = get_partition(0, partitions);
1704 p = ptes[i].part_table;
1705 origsys = sys = get_sysid(i);
1707 /* if changing types T to 0 is allowed, then
1708 the reverse change must be allowed, too */
1709 if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN && !get_nr_sects(p)) {
1710 printf(_("Partition %d does not exist yet!\n"), i + 1);
1714 sys = read_hex (get_sys_types());
1716 if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN) {
1717 printf(_("Type 0 means free space to many systems\n"
1718 "(but not to Linux). Having partitions of\n"
1719 "type 0 is probably unwise. You can delete\n"
1720 "a partition using the 'd' command.\n"));
1724 if (!LABEL_IS_SUN && !LABEL_IS_SGI) {
1725 if (IS_EXTENDED(sys) != IS_EXTENDED(p->sys_ind)) {
1726 printf(_("You cannot change a partition into"
1727 " an extended one or vice versa\n"
1728 "Delete it first.\n"));
1734 if (LABEL_IS_SUN && i == 2 && sys != SUN_WHOLE_DISK)
1735 printf(_("Consider leaving partition 3 "
1736 "as Whole disk (5),\n"
1737 "as SunOS/Solaris expects it and "
1738 "even Linux likes it.\n\n"));
1741 (i == 10 && sys != SGI_ENTIRE_DISK) ||
1742 (i == 8 && sys != 0)
1745 printf(_("Consider leaving partition 9 "
1746 "as volume header (0),\nand "
1747 "partition 11 as entire volume (6)"
1748 "as IRIX expects it.\n\n"));
1753 sun_change_sysid(i, sys);
1754 } else if (LABEL_IS_SGI) {
1755 sgi_change_sysid(i, sys);
1759 printf(_("Changed system type of partition %d "
1760 "to %x (%s)\n"), i + 1, sys,
1761 partition_type(sys));
1762 ptes[i].changed = 1;
1763 if (is_dos_partition(origsys) ||
1764 is_dos_partition(sys))
1770 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
1773 /* check_consistency() and long2chs() added Sat Mar 6 12:28:16 1993,
1774 * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross,
1775 * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S.
1776 * Lubkin Oct. 1991). */
1779 long2chs(ulong ls, unsigned *c, unsigned *h, unsigned *s)
1781 int spc = heads * sectors;
1786 *s = ls % sectors + 1; /* sectors count from 1 */
1790 check_consistency(const struct partition *p, int partition)
1792 unsigned pbc, pbh, pbs; /* physical beginning c, h, s */
1793 unsigned pec, peh, pes; /* physical ending c, h, s */
1794 unsigned lbc, lbh, lbs; /* logical beginning c, h, s */
1795 unsigned lec, leh, les; /* logical ending c, h, s */
1797 if (!heads || !sectors || (partition >= 4))
1798 return; /* do not check extended partitions */
1800 /* physical beginning c, h, s */
1801 pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300);
1803 pbs = p->sector & 0x3f;
1805 /* physical ending c, h, s */
1806 pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300);
1808 pes = p->end_sector & 0x3f;
1810 /* compute logical beginning (c, h, s) */
1811 long2chs(get_start_sect(p), &lbc, &lbh, &lbs);
1813 /* compute logical ending (c, h, s) */
1814 long2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les);
1816 /* Same physical / logical beginning? */
1817 if (cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) {
1818 printf(_("Partition %d has different physical/logical "
1819 "beginnings (non-Linux?):\n"), partition + 1);
1820 printf(_(" phys=(%d, %d, %d) "), pbc, pbh, pbs);
1821 printf(_("logical=(%d, %d, %d)\n"),lbc, lbh, lbs);
1824 /* Same physical / logical ending? */
1825 if (cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) {
1826 printf(_("Partition %d has different physical/logical "
1827 "endings:\n"), partition + 1);
1828 printf(_(" phys=(%d, %d, %d) "), pec, peh, pes);
1829 printf(_("logical=(%d, %d, %d)\n"),lec, leh, les);
1832 /* Ending on cylinder boundary? */
1833 if (peh != (heads - 1) || pes != sectors) {
1834 printf(_("Partition %i does not end on cylinder boundary.\n"),
1840 list_disk_geometry(void)
1842 long long bytes = (total_number_of_sectors << 9);
1843 long megabytes = bytes/1000000;
1845 if (megabytes < 10000)
1846 printf(_("\nDisk %s: %ld MB, %lld bytes\n"),
1847 disk_device, megabytes, bytes);
1849 printf(_("\nDisk %s: %ld.%ld GB, %lld bytes\n"),
1850 disk_device, megabytes/1000, (megabytes/100)%10, bytes);
1851 printf(_("%d heads, %d sectors/track, %d cylinders"),
1852 heads, sectors, cylinders);
1853 if (units_per_sector == 1)
1854 printf(_(", total %llu sectors"),
1855 total_number_of_sectors / (sector_size/512));
1856 printf(_("\nUnits = %s of %d * %d = %d bytes\n\n"),
1858 units_per_sector, sector_size, units_per_sector * sector_size);
1862 * Check whether partition entries are ordered by their starting positions.
1863 * Return 0 if OK. Return i if partition i should have been earlier.
1864 * Two separate checks: primary and logical partitions.
1867 wrong_p_order(int *prev)
1869 const struct pte *pe;
1870 const struct partition *p;
1871 off_t last_p_start_pos = 0, p_start_pos;
1874 for (i = 0 ; i < partitions; i++) {
1877 last_p_start_pos = 0;
1880 if ((p = pe->part_table)->sys_ind) {
1881 p_start_pos = get_partition_start(pe);
1883 if (last_p_start_pos > p_start_pos) {
1889 last_p_start_pos = p_start_pos;
1896 #if ENABLE_FEATURE_FDISK_ADVANCED
1898 * Fix the chain of logicals.
1899 * extended_offset is unchanged, the set of sectors used is unchanged
1900 * The chain is sorted so that sectors increase, and so that
1901 * starting sectors increase.
1903 * After this it may still be that cfdisk doesnt like the table.
1904 * (This is because cfdisk considers expanded parts, from link to
1905 * end of partition, and these may still overlap.)
1907 * sfdisk /dev/hda > ohda; sfdisk /dev/hda < ohda
1911 fix_chain_of_logicals(void)
1913 int j, oj, ojj, sj, sjj;
1914 struct partition *pj,*pjj,tmp;
1916 /* Stage 1: sort sectors but leave sector of part 4 */
1917 /* (Its sector is the global extended_offset.) */
1919 for (j = 5; j < partitions-1; j++) {
1920 oj = ptes[j].offset;
1921 ojj = ptes[j+1].offset;
1923 ptes[j].offset = ojj;
1924 ptes[j+1].offset = oj;
1925 pj = ptes[j].part_table;
1926 set_start_sect(pj, get_start_sect(pj)+oj-ojj);
1927 pjj = ptes[j+1].part_table;
1928 set_start_sect(pjj, get_start_sect(pjj)+ojj-oj);
1929 set_start_sect(ptes[j-1].ext_pointer,
1930 ojj-extended_offset);
1931 set_start_sect(ptes[j].ext_pointer,
1932 oj-extended_offset);
1937 /* Stage 2: sort starting sectors */
1939 for (j = 4; j < partitions-1; j++) {
1940 pj = ptes[j].part_table;
1941 pjj = ptes[j+1].part_table;
1942 sj = get_start_sect(pj);
1943 sjj = get_start_sect(pjj);
1944 oj = ptes[j].offset;
1945 ojj = ptes[j+1].offset;
1946 if (oj+sj > ojj+sjj) {
1950 set_start_sect(pj, ojj+sjj-oj);
1951 set_start_sect(pjj, oj+sj-ojj);
1956 /* Probably something was changed */
1957 for (j = 4; j < partitions; j++)
1958 ptes[j].changed = 1;
1963 fix_partition_table_order(void)
1965 struct pte *pei, *pek;
1968 if (!wrong_p_order(NULL)) {
1969 printf(_("Nothing to do. Ordering is correct already.\n\n"));
1973 while ((i = wrong_p_order(&k)) != 0 && i < 4) {
1974 /* partition i should have come earlier, move it */
1975 /* We have to move data in the MBR */
1976 struct partition *pi, *pk, *pe, pbuf;
1980 pe = pei->ext_pointer;
1981 pei->ext_pointer = pek->ext_pointer;
1982 pek->ext_pointer = pe;
1984 pi = pei->part_table;
1985 pk = pek->part_table;
1987 memmove(&pbuf, pi, sizeof(struct partition));
1988 memmove(pi, pk, sizeof(struct partition));
1989 memmove(pk, &pbuf, sizeof(struct partition));
1991 pei->changed = pek->changed = 1;
1995 fix_chain_of_logicals();
2003 list_table(int xtra)
2005 const struct partition *p;
2009 sun_list_table(xtra);
2013 sgi_list_table(xtra);
2017 list_disk_geometry();
2020 xbsd_print_disklabel(xtra);
2024 /* Heuristic: we list partition 3 of /dev/foo as /dev/foo3,
2025 but if the device name ends in a digit, say /dev/foo1,
2026 then the partition is called /dev/foo1p3. */
2027 w = strlen(disk_device);
2028 if (w && isdigit(disk_device[w-1]))
2033 // 1 12345678901 12345678901 12345678901 12
2034 printf(_("%*s Boot Start End Blocks Id System\n"),
2037 for (i = 0; i < partitions; i++) {
2038 const struct pte *pe = &ptes[i];
2044 if (!p || is_cleared_partition(p))
2047 psects = get_nr_sects(p);
2051 if (sector_size < 1024) {
2052 pblocks /= (1024 / sector_size);
2053 podd = psects % (1024 / sector_size);
2055 if (sector_size > 1024)
2056 pblocks *= (sector_size / 1024);
2058 printf("%s %c %11llu %11llu %11llu%c %2x %s\n",
2059 partname(disk_device, i+1, w+2),
2060 !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */
2062 (unsigned long long) cround(get_partition_start(pe)), /* start */
2063 (unsigned long long) cround(get_partition_start(pe) + psects /* end */
2064 - (psects ? 1 : 0)),
2065 (unsigned long long) pblocks, podd ? '+' : ' ', /* odd flag on end */
2066 p->sys_ind, /* type id */
2067 partition_type(p->sys_ind)); /* type name */
2069 check_consistency(p, i);
2072 /* Is partition table in disk order? It need not be, but... */
2073 /* partition table entries are not checked for correct order if this
2074 is a sgi, sun or aix labeled disk... */
2075 if (LABEL_IS_DOS && wrong_p_order(NULL)) {
2077 printf(_("\nPartition table entries are not in disk order\n"));
2081 #if ENABLE_FEATURE_FDISK_ADVANCED
2083 x_list_table(int extend)
2085 const struct pte *pe;
2086 const struct partition *p;
2089 printf(_("\nDisk %s: %d heads, %d sectors, %d cylinders\n\n"),
2090 disk_device, heads, sectors, cylinders);
2091 printf(_("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n"));
2092 for (i = 0 ; i < partitions; i++) {
2094 p = (extend ? pe->ext_pointer : pe->part_table);
2096 printf("%2d %02x%4d%4d%5d%4d%4d%5d%11u%11u %02x\n",
2097 i + 1, p->boot_ind, p->head,
2099 cylinder(p->sector, p->cyl), p->end_head,
2100 sector(p->end_sector),
2101 cylinder(p->end_sector, p->end_cyl),
2102 get_start_sect(p), get_nr_sects(p), p->sys_ind);
2104 check_consistency(p, i);
2110 #if ENABLE_FEATURE_FDISK_WRITABLE
2112 fill_bounds(off_t *first, off_t *last)
2115 const struct pte *pe = &ptes[0];
2116 const struct partition *p;
2118 for (i = 0; i < partitions; pe++,i++) {
2120 if (!p->sys_ind || IS_EXTENDED(p->sys_ind)) {
2121 first[i] = 0xffffffff;
2124 first[i] = get_partition_start(pe);
2125 last[i] = first[i] + get_nr_sects(p) - 1;
2131 check(int n, unsigned h, unsigned s, unsigned c, off_t start)
2133 off_t total, real_s, real_c;
2135 real_s = sector(s) - 1;
2136 real_c = cylinder(s, c);
2137 total = (real_c * sectors + real_s) * heads + h;
2139 printf(_("Warning: partition %d contains sector 0\n"), n);
2141 printf(_("Partition %d: head %d greater than maximum %d\n"),
2143 if (real_s >= sectors)
2144 printf(_("Partition %d: sector %d greater than "
2145 "maximum %d\n"), n, s, sectors);
2146 if (real_c >= cylinders)
2147 printf(_("Partitions %d: cylinder %llu greater than "
2148 "maximum %d\n"), n, (unsigned long long)real_c + 1, cylinders);
2149 if (cylinders <= 1024 && start != total)
2150 printf(_("Partition %d: previous sectors %llu disagrees with "
2151 "total %llu\n"), n, (unsigned long long)start, (unsigned long long)total);
2159 off_t first[partitions], last[partitions];
2160 struct partition *p;
2162 if (warn_geometry())
2174 fill_bounds(first, last);
2175 for (i = 0; i < partitions; i++) {
2176 struct pte *pe = &ptes[i];
2179 if (p->sys_ind && !IS_EXTENDED(p->sys_ind)) {
2180 check_consistency(p, i);
2181 if (get_partition_start(pe) < first[i])
2182 printf(_("Warning: bad start-of-data in "
2183 "partition %d\n"), i + 1);
2184 check(i + 1, p->end_head, p->end_sector, p->end_cyl,
2186 total += last[i] + 1 - first[i];
2187 for (j = 0; j < i; j++)
2188 if ((first[i] >= first[j] && first[i] <= last[j])
2189 || ((last[i] <= last[j] && last[i] >= first[j]))) {
2190 printf(_("Warning: partition %d overlaps "
2191 "partition %d.\n"), j + 1, i + 1);
2192 total += first[i] >= first[j] ?
2193 first[i] : first[j];
2194 total -= last[i] <= last[j] ?
2200 if (extended_offset) {
2201 struct pte *pex = &ptes[ext_index];
2202 off_t e_last = get_start_sect(pex->part_table) +
2203 get_nr_sects(pex->part_table) - 1;
2205 for (i = 4; i < partitions; i++) {
2207 p = ptes[i].part_table;
2209 if (i != 4 || i + 1 < partitions)
2210 printf(_("Warning: partition %d "
2211 "is empty\n"), i + 1);
2213 else if (first[i] < extended_offset ||
2215 printf(_("Logical partition %d not entirely in "
2216 "partition %d\n"), i + 1, ext_index + 1);
2220 if (total > heads * sectors * cylinders)
2221 printf(_("Total allocated sectors %d greater than the maximum "
2222 "%d\n"), total, heads * sectors * cylinders);
2223 else if ((total = heads * sectors * cylinders - total) != 0)
2224 printf(_("%d unallocated sectors\n"), total);
2228 add_partition(int n, int sys)
2230 char mesg[256]; /* 48 does not suffice in Japanese */
2231 int i, num_read = 0;
2232 struct partition *p = ptes[n].part_table;
2233 struct partition *q = ptes[ext_index].part_table;
2235 off_t start, stop = 0, limit, temp,
2236 first[partitions], last[partitions];
2238 if (p && p->sys_ind) {
2239 printf(_("Partition %d is already defined. Delete "
2240 "it before re-adding it.\n"), n + 1);
2243 fill_bounds(first, last);
2245 start = sector_offset;
2246 if (display_in_cyl_units || !total_number_of_sectors)
2247 llimit = heads * sectors * cylinders - 1;
2249 llimit = total_number_of_sectors - 1;
2251 if (limit != llimit)
2253 if (extended_offset) {
2254 first[ext_index] = extended_offset;
2255 last[ext_index] = get_start_sect(q) +
2256 get_nr_sects(q) - 1;
2259 start = extended_offset + sector_offset;
2260 limit = get_start_sect(q) + get_nr_sects(q) - 1;
2262 if (display_in_cyl_units)
2263 for (i = 0; i < partitions; i++)
2264 first[i] = (cround(first[i]) - 1) * units_per_sector;
2266 snprintf(mesg, sizeof(mesg), _("First %s"), str_units(SINGULAR));
2269 for (i = 0; i < partitions; i++) {
2272 if (start == ptes[i].offset)
2273 start += sector_offset;
2274 lastplusoff = last[i] + ((n < 4) ? 0 : sector_offset);
2275 if (start >= first[i] && start <= lastplusoff)
2276 start = lastplusoff + 1;
2280 if (start >= temp+units_per_sector && num_read) {
2281 printf(_("Sector %"OFF_FMT"d is already allocated\n"), temp);
2285 if (!num_read && start == temp) {
2288 saved_start = start;
2289 start = read_int(cround(saved_start), cround(saved_start), cround(limit),
2291 if (display_in_cyl_units) {
2292 start = (start - 1) * units_per_sector;
2293 if (start < saved_start) start = saved_start;
2297 } while (start != temp || !num_read);
2298 if (n > 4) { /* NOT for fifth partition */
2299 struct pte *pe = &ptes[n];
2301 pe->offset = start - sector_offset;
2302 if (pe->offset == extended_offset) { /* must be corrected */
2304 if (sector_offset == 1)
2309 for (i = 0; i < partitions; i++) {
2310 struct pte *pe = &ptes[i];
2312 if (start < pe->offset && limit >= pe->offset)
2313 limit = pe->offset - 1;
2314 if (start < first[i] && limit >= first[i])
2315 limit = first[i] - 1;
2317 if (start > limit) {
2318 printf(_("No free sectors available\n"));
2323 if (cround(start) == cround(limit)) {
2326 snprintf(mesg, sizeof(mesg),
2327 _("Last %s or +size or +sizeM or +sizeK"),
2328 str_units(SINGULAR));
2329 stop = read_int(cround(start), cround(limit), cround(limit),
2330 cround(start), mesg);
2331 if (display_in_cyl_units) {
2332 stop = stop * units_per_sector - 1;
2338 set_partition(n, 0, start, stop, sys);
2340 set_partition(n - 1, 1, ptes[n].offset, stop, EXTENDED);
2342 if (IS_EXTENDED(sys)) {
2343 struct pte *pe4 = &ptes[4];
2344 struct pte *pen = &ptes[n];
2347 pen->ext_pointer = p;
2348 pe4->offset = extended_offset = start;
2349 pe4->sectorbuffer = xzalloc(sector_size);
2350 pe4->part_table = pt_offset(pe4->sectorbuffer, 0);
2351 pe4->ext_pointer = pe4->part_table + 1;
2360 if (partitions > 5 || ptes[4].part_table->sys_ind) {
2361 struct pte *pe = &ptes[partitions];
2363 pe->sectorbuffer = xzalloc(sector_size);
2364 pe->part_table = pt_offset(pe->sectorbuffer, 0);
2365 pe->ext_pointer = pe->part_table + 1;
2370 add_partition(partitions - 1, LINUX_NATIVE);
2376 int i, free_primary = 0;
2378 if (warn_geometry())
2382 add_sun_partition(get_partition(0, partitions), LINUX_NATIVE);
2386 sgi_add_partition(get_partition(0, partitions), LINUX_NATIVE);
2390 printf(_("\tSorry - this fdisk cannot handle AIX disk labels."
2391 "\n\tIf you want to add DOS-type partitions, create"
2392 "\n\ta new empty DOS partition table first. (Use o.)"
2394 "This will destroy the present disk contents.\n"));
2398 for (i = 0; i < 4; i++)
2399 free_primary += !ptes[i].part_table->sys_ind;
2401 if (!free_primary && partitions >= MAXIMUM_PARTS) {
2402 printf(_("The maximum number of partitions has been created\n"));
2406 if (!free_primary) {
2407 if (extended_offset)
2410 printf(_("You must delete some partition and add "
2411 "an extended partition first\n"));
2413 char c, line[LINE_LENGTH];
2414 snprintf(line, sizeof(line), "%s\n %s\n p primary "
2415 "partition (1-4)\n",
2416 "Command action", (extended_offset ?
2417 "l logical (5 or over)" : "e extended"));
2419 c = read_nonempty(line);
2420 if (c == 'p' || c == 'P') {
2421 i = get_nonexisting_partition(0, 4);
2423 add_partition(i, LINUX_NATIVE);
2426 else if (c == 'l' && extended_offset) {
2430 else if (c == 'e' && !extended_offset) {
2431 i = get_nonexisting_partition(0, 4);
2433 add_partition(i, EXTENDED);
2437 printf(_("Invalid partition number "
2438 "for type '%c'\n"), c);
2449 for (i = 0; i < 3; i++)
2450 if (ptes[i].changed)
2451 ptes[3].changed = 1;
2452 for (i = 3; i < partitions; i++) {
2453 struct pte *pe = &ptes[i];
2456 write_part_table_flag(pe->sectorbuffer);
2457 write_sector(pe->offset, pe->sectorbuffer);
2461 else if (LABEL_IS_SGI) {
2462 /* no test on change? the printf below might be mistaken */
2465 else if (LABEL_IS_SUN) {
2468 for (i = 0; i < 8; i++)
2469 if (ptes[i].changed)
2475 printf(_("The partition table has been altered!\n\n"));
2476 reread_partition_table(1);
2480 reread_partition_table(int leave)
2485 printf(_("Calling ioctl() to re-read partition table.\n"));
2488 if ((i = ioctl(fd, BLKRRPART)) != 0) {
2491 /* some kernel versions (1.2.x) seem to have trouble
2492 rereading the partition table, but if asked to do it
2493 twice, the second time works. - biro@yggdrasil.com */
2496 if ((i = ioctl(fd, BLKRRPART)) != 0)
2501 printf(_("\nWARNING: Re-reading the partition table "
2502 "failed with error %d: %s.\n"
2503 "The kernel still uses the old table.\n"
2504 "The new table will be used "
2505 "at the next reboot.\n"),
2506 error, strerror(error));
2511 _("\nWARNING: If you have created or modified any DOS 6.x\n"
2512 "partitions, please see the fdisk manual page for additional\n"
2518 printf(_("Syncing disks.\n"));
2520 sleep(4); /* for sync() */
2524 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */
2526 #if ENABLE_FEATURE_FDISK_ADVANCED
2527 #define MAX_PER_LINE 16
2529 print_buffer(char *pbuffer)
2533 for (i = 0, l = 0; i < sector_size; i++, l++) {
2535 printf("0x%03X:", i);
2536 printf(" %02X", (unsigned char) pbuffer[i]);
2537 if (l == MAX_PER_LINE - 1) {
2553 printf(_("Device: %s\n"), disk_device);
2554 if (LABEL_IS_SGI || LABEL_IS_SUN)
2555 print_buffer(MBRbuffer);
2557 for (i = 3; i < partitions; i++)
2558 print_buffer(ptes[i].sectorbuffer);
2565 struct pte *pe = &ptes[i];
2566 struct partition *p = pe->part_table;
2569 if (warn_geometry())
2571 if (!p->sys_ind || !get_nr_sects(p) || IS_EXTENDED(p->sys_ind)) {
2572 printf(_("Partition %d has no data area\n"), i + 1);
2575 first = get_partition_start(pe);
2576 new = read_int(first, first, first + get_nr_sects(p) - 1, first,
2577 _("New beginning of data")) - pe->offset;
2579 if (new != get_nr_sects(p)) {
2580 first = get_nr_sects(p) + get_start_sect(p) - new;
2581 set_nr_sects(p, first);
2582 set_start_sect(p, new);
2594 c = tolower(read_nonempty(_("Expert command (m for help): ")));
2602 move_begin(get_partition(0, partitions));
2605 user_cylinders = cylinders =
2606 read_int(1, cylinders, 1048576, 0,
2607 _("Number of cylinders"));
2609 sun_set_ncyl(cylinders);
2619 else if (LABEL_IS_SUN)
2621 else if (LABEL_IS_DOS)
2626 fix_partition_table_order();
2629 #if ENABLE_FEATURE_SGI_LABEL
2634 user_heads = heads = read_int(1, heads, 256, 0,
2635 _("Number of heads"));
2659 user_sectors = sectors = read_int(1, sectors, 63, 0,
2660 _("Number of sectors"));
2661 if (dos_compatible_flag) {
2662 sector_offset = sectors;
2663 printf(_("Warning: setting sector offset for DOS "
2672 write_table(); /* does not return */
2676 sun_set_pcylcount();
2683 #endif /* ADVANCED mode */
2686 is_ide_cdrom_or_tape(const char *device)
2690 struct stat statbuf;
2693 /* No device was given explicitly, and we are trying some
2694 likely things. But opening /dev/hdc may produce errors like
2695 "hdc: tray open or drive not ready"
2696 if it happens to be a CD-ROM drive. It even happens that
2697 the process hangs on the attempt to read a music CD.
2698 So try to be careful. This only works since 2.1.73. */
2700 if (strncmp("/dev/hd", device, 7))
2703 snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5);
2704 procf = fopen(buf, "r");
2705 if (procf != NULL && fgets(buf, sizeof(buf), procf))
2706 is_ide = (!strncmp(buf, "cdrom", 5) ||
2707 !strncmp(buf, "tape", 4));
2709 /* Now when this proc file does not exist, skip the
2710 device when it is read-only. */
2711 if (stat(device, &statbuf) == 0)
2712 is_ide = ((statbuf.st_mode & 0222) == 0);
2721 try(const char *device, int user_specified)
2725 disk_device = device;
2726 if (setjmp(listingbuf))
2728 if (!user_specified)
2729 if (is_ide_cdrom_or_tape(device))
2731 if ((fd = open(disk_device, type_open)) >= 0) {
2732 gb = get_boot(try_only);
2733 if (gb > 0) { /* I/O error */
2735 } else if (gb < 0) { /* no DOS signature */
2736 list_disk_geometry();
2740 #if ENABLE_FEATURE_OSF_LABEL
2741 if (btrydev(device) < 0)
2743 printf(_("Disk %s doesn't contain a valid "
2744 "partition table\n"), device);
2749 #if ENABLE_FEATURE_FDISK_WRITABLE
2750 if (!LABEL_IS_SUN && partitions > 4){
2751 delete_partition(ext_index);
2756 /* Ignore other errors, since we try IDE
2757 and SCSI hard disks which may not be
2758 installed on the system. */
2759 if (errno == EACCES) {
2760 printf(_("Cannot open %s\n"), device);
2766 /* for fdisk -l: try all things in /proc/partitions
2767 that look like a partition name (do not end in a digit) */
2772 char line[100], ptname[100], devname[120], *s;
2775 procpt = fopen_or_warn("/proc/partitions", "r");
2777 while (fgets(line, sizeof(line), procpt)) {
2778 if (sscanf(line, " %d %d %d %[^\n ]",
2779 &ma, &mi, &sz, ptname) != 4)
2781 for (s = ptname; *s; s++);
2784 sprintf(devname, "/dev/%s", ptname);
2787 #if ENABLE_FEATURE_CLEAN_UP
2792 #if ENABLE_FEATURE_FDISK_WRITABLE
2794 unknown_command(int c)
2796 printf(_("%c: unknown command\n"), c);
2800 int fdisk_main(int argc, char **argv)
2802 char *str_b, *str_C, *str_H, *str_S;
2807 * fdisk -l [-b sectorsize] [-u] device ...
2808 * fdisk -s [partition] ...
2809 * fdisk [-b sectorsize] [-u] device
2811 * Options -C, -H, -S set the geometry.
2820 OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE,
2822 opt = getopt32(argc, argv, "b:C:H:lS:u" USE_FEATURE_FDISK_BLKSIZE("s"),
2823 &str_b, &str_C, &str_H, &str_S);
2826 if (opt & OPT_b) { // -b
2827 /* Ugly: this sector size is really per device,
2828 so cannot be combined with multiple disks,
2829 and the same goes for the C/H/S options.
2831 sector_size = xatoi_u(str_b);
2832 if (sector_size != 512 && sector_size != 1024 &&
2833 sector_size != 2048)
2836 user_set_sector_size = 1;
2838 if (opt & OPT_C) user_cylinders = xatoi_u(str_C); // -C
2839 if (opt & OPT_H) { // -H
2840 user_heads = xatoi_u(str_H);
2841 if (user_heads <= 0 || user_heads >= 256)
2844 //if (opt & OPT_l) // -l
2845 if (opt & OPT_S) { // -S
2846 user_sectors = xatoi_u(str_S);
2847 if (user_sectors <= 0 || user_sectors >= 64)
2850 if (opt & OPT_u) display_in_cyl_units = 0; // -u
2851 //if (opt & OPT_s) // -s
2853 if (user_set_sector_size && argc != 1)
2854 printf(_("Warning: the -b (set sector size) option should"
2855 " be used with one specified device\n"));
2857 #if ENABLE_FEATURE_FDISK_WRITABLE
2861 type_open = O_RDONLY;
2865 /* avoid gcc warning:
2866 variable `k' might be clobbered by `longjmp' */
2870 for (k = 0; k < argc; k++)
2873 /* we no longer have default device names */
2874 /* but, we can use /proc/partitions instead */
2878 #if ENABLE_FEATURE_FDISK_WRITABLE
2882 #if ENABLE_FEATURE_FDISK_BLKSIZE
2888 type_open = O_RDONLY;
2893 for (j = 0; j < argc; j++) {
2894 disk_device = argv[j];
2895 fd = open(disk_device, type_open);
2897 fdisk_fatal(unable_to_open);
2898 if (ioctl(fd, BLKGETSIZE, &size))
2899 fdisk_fatal(ioctl_error);
2902 printf("%ld\n", size/2);
2904 printf("%s: %ld\n", argv[j], size/2);
2910 #if ENABLE_FEATURE_FDISK_WRITABLE
2914 disk_device = argv[0];
2918 /* OSF label, and no DOS label */
2919 printf(_("Detected an OSF/1 disklabel on %s, entering "
2920 "disklabel mode.\n"), disk_device);
2922 /*Why do we do this? It seems to be counter-intuitive*/
2923 current_label_type = label_dos;
2924 /* If we return we may want to make an empty DOS label? */
2929 c = tolower(read_nonempty(_("Command (m for help): ")));
2933 toggle_active(get_partition(1, partitions));
2934 else if (LABEL_IS_SUN)
2935 toggle_sunflags(get_partition(1, partitions),
2937 else if (LABEL_IS_SGI)
2938 sgi_set_bootpartition(
2939 get_partition(1, partitions));
2945 printf(_("\nThe current boot file is: %s\n"),
2946 sgi_get_bootfile());
2947 if (read_maybe_empty(_("Please enter the name of the "
2948 "new boot file: ")) == '\n')
2949 printf(_("Boot file unchanged\n"));
2951 sgi_set_bootfile(line_ptr);
2953 #if ENABLE_FEATURE_OSF_LABEL
2960 toggle_dos_compatibility_flag();
2961 else if (LABEL_IS_SUN)
2962 toggle_sunflags(get_partition(1, partitions),
2964 else if (LABEL_IS_SGI)
2965 sgi_set_swappartition(
2966 get_partition(1, partitions));
2973 /* If sgi_label then don't use get_existing_partition,
2974 let the user select a partition, since
2975 get_existing_partition() only works for Linux-like
2977 if (!LABEL_IS_SGI) {
2978 j = get_existing_partition(1, partitions);
2980 j = get_partition(1, partitions);
2983 delete_partition(j);
2992 list_types(get_sys_types());
3011 #if ENABLE_FEATURE_SUN_LABEL
3025 write_table(); /* does not return */
3027 #if ENABLE_FEATURE_FDISK_ADVANCED
3030 printf(_("\n\tSorry, no experts menu for SGI "
3031 "partition tables available.\n\n"));
3042 #endif /* CONFIG_FEATURE_FDISK_WRITABLE */