blob: ce4c24fdc100dc89f4873ec63e86b29c58c91b0f
1 | /* vi: set sw=4 ts=4: */ |
2 | /* fdisk.c -- Partition table manipulator for Linux. |
3 | * |
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) |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
8 | */ |
9 | |
10 | /* Looks like someone forgot to add this to config system */ |
11 | //usage:#ifndef ENABLE_FEATURE_FDISK_BLKSIZE |
12 | //usage:# define ENABLE_FEATURE_FDISK_BLKSIZE 0 |
13 | //usage:# define IF_FEATURE_FDISK_BLKSIZE(a) |
14 | //usage:#endif |
15 | //usage: |
16 | //usage:#define fdisk_trivial_usage |
17 | //usage: "[-ul" IF_FEATURE_FDISK_BLKSIZE("s") "] " |
18 | //usage: "[-C CYLINDERS] [-H HEADS] [-S SECTORS] [-b SSZ] DISK" |
19 | //usage:#define fdisk_full_usage "\n\n" |
20 | //usage: "Change partition table\n" |
21 | //usage: "\n -u Start and End are in sectors (instead of cylinders)" |
22 | //usage: "\n -l Show partition table for each DISK, then exit" |
23 | //usage: IF_FEATURE_FDISK_BLKSIZE( |
24 | //usage: "\n -s Show partition sizes in kb for each DISK, then exit" |
25 | //usage: ) |
26 | //usage: "\n -b 2048 (for certain MO disks) use 2048-byte sectors" |
27 | //usage: "\n -C CYLINDERS Set number of cylinders/heads/sectors" |
28 | //usage: "\n -H HEADS" |
29 | //usage: "\n -S SECTORS" |
30 | |
31 | #ifndef _LARGEFILE64_SOURCE |
32 | /* For lseek64 */ |
33 | # define _LARGEFILE64_SOURCE |
34 | #endif |
35 | #include <assert.h> /* assert */ |
36 | #include <sys/mount.h> |
37 | #if !defined(BLKSSZGET) |
38 | # define BLKSSZGET _IO(0x12, 104) |
39 | #endif |
40 | #if !defined(BLKGETSIZE64) |
41 | # define BLKGETSIZE64 _IOR(0x12,114,size_t) |
42 | #endif |
43 | #include "libbb.h" |
44 | |
45 | #if BB_LITTLE_ENDIAN |
46 | # define inline_if_little_endian ALWAYS_INLINE |
47 | #else |
48 | # define inline_if_little_endian /* nothing */ |
49 | #endif |
50 | |
51 | |
52 | /* Looks like someone forgot to add this to config system */ |
53 | #ifndef ENABLE_FEATURE_FDISK_BLKSIZE |
54 | # define ENABLE_FEATURE_FDISK_BLKSIZE 0 |
55 | # define IF_FEATURE_FDISK_BLKSIZE(a) |
56 | #endif |
57 | |
58 | #define DEFAULT_SECTOR_SIZE 512 |
59 | #define DEFAULT_SECTOR_SIZE_STR "512" |
60 | #define MAX_SECTOR_SIZE 2048 |
61 | #define SECTOR_SIZE 512 /* still used in osf/sgi/sun code */ |
62 | #define MAXIMUM_PARTS 60 |
63 | |
64 | #define ACTIVE_FLAG 0x80 |
65 | |
66 | #define EXTENDED 0x05 |
67 | #define WIN98_EXTENDED 0x0f |
68 | #define LINUX_PARTITION 0x81 |
69 | #define LINUX_SWAP 0x82 |
70 | #define LINUX_NATIVE 0x83 |
71 | #define LINUX_EXTENDED 0x85 |
72 | #define LINUX_LVM 0x8e |
73 | #define LINUX_RAID 0xfd |
74 | |
75 | |
76 | enum { |
77 | OPT_b = 1 << 0, |
78 | OPT_C = 1 << 1, |
79 | OPT_H = 1 << 2, |
80 | OPT_l = 1 << 3, |
81 | OPT_S = 1 << 4, |
82 | OPT_u = 1 << 5, |
83 | OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE, |
84 | }; |
85 | |
86 | |
87 | typedef unsigned long long ullong; |
88 | /* Used for sector numbers. Partition formats we know |
89 | * do not support more than 2^32 sectors |
90 | */ |
91 | typedef uint32_t sector_t; |
92 | #if UINT_MAX == 4294967295 |
93 | # define SECT_FMT "" |
94 | #elif ULONG_MAX == 4294967295 |
95 | # define SECT_FMT "l" |
96 | #else |
97 | # error Cant detect sizeof(uint32_t) |
98 | #endif |
99 | |
100 | struct hd_geometry { |
101 | unsigned char heads; |
102 | unsigned char sectors; |
103 | unsigned short cylinders; |
104 | unsigned long start; |
105 | }; |
106 | |
107 | #define HDIO_GETGEO 0x0301 /* get device geometry */ |
108 | |
109 | static const char msg_building_new_label[] ALIGN1 = |
110 | "Building a new %s. Changes will remain in memory only,\n" |
111 | "until you decide to write them. After that the previous content\n" |
112 | "won't be recoverable.\n\n"; |
113 | |
114 | static const char msg_part_already_defined[] ALIGN1 = |
115 | "Partition %u is already defined, delete it before re-adding\n"; |
116 | |
117 | |
118 | struct partition { |
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 */ |
129 | } PACKED; |
130 | |
131 | /* |
132 | * per partition table entry data |
133 | * |
134 | * The four primary partitions have the same sectorbuffer (MBRbuffer) |
135 | * and have NULL ext_pointer. |
136 | * Each logical partition table entry has two pointers, one for the |
137 | * partition and one link to the next one. |
138 | */ |
139 | struct pte { |
140 | struct partition *part_table; /* points into sectorbuffer */ |
141 | struct partition *ext_pointer; /* points into sectorbuffer */ |
142 | sector_t offset_from_dev_start; /* disk sector number */ |
143 | char *sectorbuffer; /* disk sector contents */ |
144 | #if ENABLE_FEATURE_FDISK_WRITABLE |
145 | char changed; /* boolean */ |
146 | #endif |
147 | }; |
148 | |
149 | #define unable_to_open "can't open '%s'" |
150 | #define unable_to_read "can't read from %s" |
151 | #define unable_to_seek "can't seek on %s" |
152 | |
153 | enum label_type { |
154 | LABEL_DOS, LABEL_SUN, LABEL_SGI, LABEL_AIX, LABEL_OSF, LABEL_GPT |
155 | }; |
156 | |
157 | #define LABEL_IS_DOS (LABEL_DOS == current_label_type) |
158 | |
159 | #if ENABLE_FEATURE_SUN_LABEL |
160 | #define LABEL_IS_SUN (LABEL_SUN == current_label_type) |
161 | #define STATIC_SUN static |
162 | #else |
163 | #define LABEL_IS_SUN 0 |
164 | #define STATIC_SUN extern |
165 | #endif |
166 | |
167 | #if ENABLE_FEATURE_SGI_LABEL |
168 | #define LABEL_IS_SGI (LABEL_SGI == current_label_type) |
169 | #define STATIC_SGI static |
170 | #else |
171 | #define LABEL_IS_SGI 0 |
172 | #define STATIC_SGI extern |
173 | #endif |
174 | |
175 | #if ENABLE_FEATURE_AIX_LABEL |
176 | #define LABEL_IS_AIX (LABEL_AIX == current_label_type) |
177 | #define STATIC_AIX static |
178 | #else |
179 | #define LABEL_IS_AIX 0 |
180 | #define STATIC_AIX extern |
181 | #endif |
182 | |
183 | #if ENABLE_FEATURE_OSF_LABEL |
184 | #define LABEL_IS_OSF (LABEL_OSF == current_label_type) |
185 | #define STATIC_OSF static |
186 | #else |
187 | #define LABEL_IS_OSF 0 |
188 | #define STATIC_OSF extern |
189 | #endif |
190 | |
191 | #if ENABLE_FEATURE_GPT_LABEL |
192 | #define LABEL_IS_GPT (LABEL_GPT == current_label_type) |
193 | #define STATIC_GPT static |
194 | #else |
195 | #define LABEL_IS_GPT 0 |
196 | #define STATIC_GPT extern |
197 | #endif |
198 | |
199 | enum action { OPEN_MAIN, TRY_ONLY, CREATE_EMPTY_DOS, CREATE_EMPTY_SUN }; |
200 | |
201 | static void update_units(void); |
202 | #if ENABLE_FEATURE_FDISK_WRITABLE |
203 | static void change_units(void); |
204 | static void reread_partition_table(int leave); |
205 | static void delete_partition(int i); |
206 | static unsigned get_partition(int warn, unsigned max); |
207 | static void list_types(const char *const *sys); |
208 | static sector_t read_int(sector_t low, sector_t dflt, sector_t high, sector_t base, const char *mesg); |
209 | #endif |
210 | static const char *partition_type(unsigned char type); |
211 | static void get_geometry(void); |
212 | static void read_pte(struct pte *pe, sector_t offset); |
213 | #if ENABLE_FEATURE_SUN_LABEL || ENABLE_FEATURE_FDISK_WRITABLE |
214 | static int get_boot(enum action what); |
215 | #else |
216 | static int get_boot(void); |
217 | #endif |
218 | |
219 | #define PLURAL 0 |
220 | #define SINGULAR 1 |
221 | |
222 | static sector_t get_start_sect(const struct partition *p); |
223 | static sector_t get_nr_sects(const struct partition *p); |
224 | |
225 | /* DOS partition types */ |
226 | |
227 | static const char *const i386_sys_types[] = { |
228 | "\x00" "Empty", |
229 | "\x01" "FAT12", |
230 | "\x04" "FAT16 <32M", |
231 | "\x05" "Extended", /* DOS 3.3+ extended partition */ |
232 | "\x06" "FAT16", /* DOS 16-bit >=32M */ |
233 | "\x07" "HPFS/NTFS", /* OS/2 IFS, eg, HPFS or NTFS or QNX */ |
234 | "\x0a" "OS/2 Boot Manager",/* OS/2 Boot Manager */ |
235 | "\x0b" "Win95 FAT32", |
236 | "\x0c" "Win95 FAT32 (LBA)",/* LBA really is 'Extended Int 13h' */ |
237 | "\x0e" "Win95 FAT16 (LBA)", |
238 | "\x0f" "Win95 Ext'd (LBA)", |
239 | "\x11" "Hidden FAT12", |
240 | "\x12" "Compaq diagnostics", |
241 | "\x14" "Hidden FAT16 <32M", |
242 | "\x16" "Hidden FAT16", |
243 | "\x17" "Hidden HPFS/NTFS", |
244 | "\x1b" "Hidden Win95 FAT32", |
245 | "\x1c" "Hidden W95 FAT32 (LBA)", |
246 | "\x1e" "Hidden W95 FAT16 (LBA)", |
247 | "\x3c" "Part.Magic recovery", |
248 | "\x41" "PPC PReP Boot", |
249 | "\x42" "SFS", |
250 | "\x63" "GNU HURD or SysV", /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */ |
251 | "\x80" "Old Minix", /* Minix 1.4a and earlier */ |
252 | "\x81" "Minix / old Linux",/* Minix 1.4b and later */ |
253 | "\x82" "Linux swap", /* also Solaris */ |
254 | "\x83" "Linux", |
255 | "\x84" "OS/2 hidden C: drive", |
256 | "\x85" "Linux extended", |
257 | "\x86" "NTFS volume set", |
258 | "\x87" "NTFS volume set", |
259 | "\x8e" "Linux LVM", |
260 | "\x9f" "BSD/OS", /* BSDI */ |
261 | "\xa0" "Thinkpad hibernation", |
262 | "\xa5" "FreeBSD", /* various BSD flavours */ |
263 | "\xa6" "OpenBSD", |
264 | "\xa8" "Darwin UFS", |
265 | "\xa9" "NetBSD", |
266 | "\xab" "Darwin boot", |
267 | "\xb7" "BSDI fs", |
268 | "\xb8" "BSDI swap", |
269 | "\xbe" "Solaris boot", |
270 | "\xeb" "BeOS fs", |
271 | "\xee" "EFI GPT", /* Intel EFI GUID Partition Table */ |
272 | "\xef" "EFI (FAT-12/16/32)", /* Intel EFI System Partition */ |
273 | "\xf0" "Linux/PA-RISC boot", /* Linux/PA-RISC boot loader */ |
274 | "\xf2" "DOS secondary", /* DOS 3.3+ secondary */ |
275 | "\xfd" "Linux raid autodetect", /* New (2.2.x) raid partition with |
276 | autodetect using persistent |
277 | superblock */ |
278 | #if 0 /* ENABLE_WEIRD_PARTITION_TYPES */ |
279 | "\x02" "XENIX root", |
280 | "\x03" "XENIX usr", |
281 | "\x08" "AIX", /* AIX boot (AIX -- PS/2 port) or SplitDrive */ |
282 | "\x09" "AIX bootable", /* AIX data or Coherent */ |
283 | "\x10" "OPUS", |
284 | "\x18" "AST SmartSleep", |
285 | "\x24" "NEC DOS", |
286 | "\x39" "Plan 9", |
287 | "\x40" "Venix 80286", |
288 | "\x4d" "QNX4.x", |
289 | "\x4e" "QNX4.x 2nd part", |
290 | "\x4f" "QNX4.x 3rd part", |
291 | "\x50" "OnTrack DM", |
292 | "\x51" "OnTrack DM6 Aux1", /* (or Novell) */ |
293 | "\x52" "CP/M", /* CP/M or Microport SysV/AT */ |
294 | "\x53" "OnTrack DM6 Aux3", |
295 | "\x54" "OnTrackDM6", |
296 | "\x55" "EZ-Drive", |
297 | "\x56" "Golden Bow", |
298 | "\x5c" "Priam Edisk", |
299 | "\x61" "SpeedStor", |
300 | "\x64" "Novell Netware 286", |
301 | "\x65" "Novell Netware 386", |
302 | "\x70" "DiskSecure Multi-Boot", |
303 | "\x75" "PC/IX", |
304 | "\x93" "Amoeba", |
305 | "\x94" "Amoeba BBT", /* (bad block table) */ |
306 | "\xa7" "NeXTSTEP", |
307 | "\xbb" "Boot Wizard hidden", |
308 | "\xc1" "DRDOS/sec (FAT-12)", |
309 | "\xc4" "DRDOS/sec (FAT-16 < 32M)", |
310 | "\xc6" "DRDOS/sec (FAT-16)", |
311 | "\xc7" "Syrinx", |
312 | "\xda" "Non-FS data", |
313 | "\xdb" "CP/M / CTOS / ...",/* CP/M or Concurrent CP/M or |
314 | Concurrent DOS or CTOS */ |
315 | "\xde" "Dell Utility", /* Dell PowerEdge Server utilities */ |
316 | "\xdf" "BootIt", /* BootIt EMBRM */ |
317 | "\xe1" "DOS access", /* DOS access or SpeedStor 12-bit FAT |
318 | extended partition */ |
319 | "\xe3" "DOS R/O", /* DOS R/O or SpeedStor */ |
320 | "\xe4" "SpeedStor", /* SpeedStor 16-bit FAT extended |
321 | partition < 1024 cyl. */ |
322 | "\xf1" "SpeedStor", |
323 | "\xf4" "SpeedStor", /* SpeedStor large partition */ |
324 | "\xfe" "LANstep", /* SpeedStor >1024 cyl. or LANstep */ |
325 | "\xff" "BBT", /* Xenix Bad Block Table */ |
326 | #endif |
327 | NULL |
328 | }; |
329 | |
330 | enum { |
331 | dev_fd = 3 /* the disk */ |
332 | }; |
333 | |
334 | /* Globals */ |
335 | struct globals { |
336 | char *line_ptr; |
337 | |
338 | const char *disk_device; |
339 | int g_partitions; // = 4; /* maximum partition + 1 */ |
340 | unsigned units_per_sector; // = 1; |
341 | unsigned sector_size; // = DEFAULT_SECTOR_SIZE; |
342 | unsigned user_set_sector_size; |
343 | unsigned sector_offset; // = 1; |
344 | unsigned g_heads, g_sectors, g_cylinders; |
345 | smallint /* enum label_type */ current_label_type; |
346 | smallint display_in_cyl_units; // = 1; |
347 | #if ENABLE_FEATURE_OSF_LABEL |
348 | smallint possibly_osf_label; |
349 | #endif |
350 | |
351 | smallint listing; /* no aborts for fdisk -l */ |
352 | smallint dos_compatible_flag; // = 1; |
353 | #if ENABLE_FEATURE_FDISK_WRITABLE |
354 | //int dos_changed; |
355 | smallint nowarn; /* no warnings for fdisk -l/-s */ |
356 | #endif |
357 | int ext_index; /* the prime extended partition */ |
358 | unsigned user_cylinders, user_heads, user_sectors; |
359 | unsigned pt_heads, pt_sectors; |
360 | unsigned kern_heads, kern_sectors; |
361 | sector_t extended_offset; /* offset of link pointers */ |
362 | sector_t total_number_of_sectors; |
363 | |
364 | jmp_buf listingbuf; |
365 | char line_buffer[80]; |
366 | char partname_buffer[80]; |
367 | /* Raw disk label. For DOS-type partition tables the MBR, |
368 | * with descriptions of the primary partitions. */ |
369 | char MBRbuffer[MAX_SECTOR_SIZE]; |
370 | /* Partition tables */ |
371 | struct pte ptes[MAXIMUM_PARTS]; |
372 | }; |
373 | #define G (*ptr_to_globals) |
374 | #define line_ptr (G.line_ptr ) |
375 | #define disk_device (G.disk_device ) |
376 | #define g_partitions (G.g_partitions ) |
377 | #define units_per_sector (G.units_per_sector ) |
378 | #define sector_size (G.sector_size ) |
379 | #define user_set_sector_size (G.user_set_sector_size) |
380 | #define sector_offset (G.sector_offset ) |
381 | #define g_heads (G.g_heads ) |
382 | #define g_sectors (G.g_sectors ) |
383 | #define g_cylinders (G.g_cylinders ) |
384 | #define current_label_type (G.current_label_type ) |
385 | #define display_in_cyl_units (G.display_in_cyl_units) |
386 | #define possibly_osf_label (G.possibly_osf_label ) |
387 | #define listing (G.listing ) |
388 | #define dos_compatible_flag (G.dos_compatible_flag ) |
389 | #define nowarn (G.nowarn ) |
390 | #define ext_index (G.ext_index ) |
391 | #define user_cylinders (G.user_cylinders ) |
392 | #define user_heads (G.user_heads ) |
393 | #define user_sectors (G.user_sectors ) |
394 | #define pt_heads (G.pt_heads ) |
395 | #define pt_sectors (G.pt_sectors ) |
396 | #define kern_heads (G.kern_heads ) |
397 | #define kern_sectors (G.kern_sectors ) |
398 | #define extended_offset (G.extended_offset ) |
399 | #define total_number_of_sectors (G.total_number_of_sectors) |
400 | #define listingbuf (G.listingbuf ) |
401 | #define line_buffer (G.line_buffer ) |
402 | #define partname_buffer (G.partname_buffer) |
403 | #define MBRbuffer (G.MBRbuffer ) |
404 | #define ptes (G.ptes ) |
405 | #define INIT_G() do { \ |
406 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ |
407 | sector_size = DEFAULT_SECTOR_SIZE; \ |
408 | sector_offset = 1; \ |
409 | g_partitions = 4; \ |
410 | display_in_cyl_units = 1; \ |
411 | units_per_sector = 1; \ |
412 | dos_compatible_flag = 1; \ |
413 | } while (0) |
414 | |
415 | |
416 | /* TODO: move to libbb? */ |
417 | /* TODO: return unsigned long long, FEATURE_FDISK_BLKSIZE _can_ handle |
418 | * disks > 2^32 sectors |
419 | */ |
420 | static sector_t bb_BLKGETSIZE_sectors(int fd) |
421 | { |
422 | uint64_t v64; |
423 | unsigned long longsectors; |
424 | |
425 | if (ioctl(fd, BLKGETSIZE64, &v64) == 0) { |
426 | /* Got bytes, convert to 512 byte sectors */ |
427 | v64 >>= 9; |
428 | if (v64 != (sector_t)v64) { |
429 | ret_trunc: |
430 | /* Not only DOS, but all other partition tables |
431 | * we support can't record more than 32 bit |
432 | * sector counts or offsets |
433 | */ |
434 | bb_error_msg("device has more than 2^32 sectors, can't use all of them"); |
435 | v64 = (uint32_t)-1L; |
436 | } |
437 | return v64; |
438 | } |
439 | /* Needs temp of type long */ |
440 | if (ioctl(fd, BLKGETSIZE, &longsectors)) { |
441 | /* Perhaps this is a disk image */ |
442 | off_t sz = lseek(fd, 0, SEEK_END); |
443 | longsectors = 0; |
444 | if (sz > 0) |
445 | longsectors = (uoff_t)sz / sector_size; |
446 | lseek(fd, 0, SEEK_SET); |
447 | } |
448 | if (sizeof(long) > sizeof(sector_t) |
449 | && longsectors != (sector_t)longsectors |
450 | ) { |
451 | goto ret_trunc; |
452 | } |
453 | return longsectors; |
454 | } |
455 | |
456 | |
457 | #define IS_EXTENDED(i) \ |
458 | ((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED) |
459 | |
460 | #define cround(n) (display_in_cyl_units ? ((n)/units_per_sector)+1 : (n)) |
461 | |
462 | #define scround(x) (((x)+units_per_sector-1)/units_per_sector) |
463 | |
464 | #define pt_offset(b, n) \ |
465 | ((struct partition *)((b) + 0x1be + (n) * sizeof(struct partition))) |
466 | |
467 | #define sector(s) ((s) & 0x3f) |
468 | |
469 | #define cylinder(s, c) ((c) | (((s) & 0xc0) << 2)) |
470 | |
471 | #define hsc2sector(h,s,c) \ |
472 | (sector(s) - 1 + sectors * ((h) + heads * cylinder(s,c))) |
473 | |
474 | static void |
475 | close_dev_fd(void) |
476 | { |
477 | /* Not really closing, but making sure it is open, and to harmless place */ |
478 | xmove_fd(xopen(bb_dev_null, O_RDONLY), dev_fd); |
479 | } |
480 | |
481 | /* |
482 | * Return partition name - uses static storage |
483 | */ |
484 | static const char * |
485 | partname(const char *dev, int pno, int lth) |
486 | { |
487 | const char *p; |
488 | int w, wp; |
489 | int bufsiz; |
490 | char *bufp; |
491 | |
492 | bufp = partname_buffer; |
493 | bufsiz = sizeof(partname_buffer); |
494 | |
495 | w = strlen(dev); |
496 | p = ""; |
497 | |
498 | if (isdigit(dev[w-1])) |
499 | p = "p"; |
500 | |
501 | /* devfs kludge - note: fdisk partition names are not supposed |
502 | to equal kernel names, so there is no reason to do this */ |
503 | if (strcmp(dev + w - 4, "disc") == 0) { |
504 | w -= 4; |
505 | p = "part"; |
506 | } |
507 | |
508 | wp = strlen(p); |
509 | |
510 | if (lth) { |
511 | snprintf(bufp, bufsiz, "%*.*s%s%-2u", |
512 | lth-wp-2, w, dev, p, pno); |
513 | } else { |
514 | snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno); |
515 | } |
516 | return bufp; |
517 | } |
518 | |
519 | static ALWAYS_INLINE struct partition * |
520 | get_part_table(int i) |
521 | { |
522 | return ptes[i].part_table; |
523 | } |
524 | |
525 | static const char * |
526 | str_units(int n) |
527 | { /* n==1: use singular */ |
528 | if (n == 1) |
529 | return display_in_cyl_units ? "cylinder" : "sector"; |
530 | return display_in_cyl_units ? "cylinders" : "sectors"; |
531 | } |
532 | |
533 | static int |
534 | valid_part_table_flag(const char *mbuffer) |
535 | { |
536 | return (mbuffer[510] == 0x55 && (uint8_t)mbuffer[511] == 0xaa); |
537 | } |
538 | |
539 | static void fdisk_fatal(const char *why) |
540 | { |
541 | if (listing) { |
542 | close_dev_fd(); |
543 | longjmp(listingbuf, 1); |
544 | } |
545 | bb_error_msg_and_die(why, disk_device); |
546 | } |
547 | |
548 | static void |
549 | seek_sector(sector_t secno) |
550 | { |
551 | #if ENABLE_FDISK_SUPPORT_LARGE_DISKS |
552 | off64_t off = (off64_t)secno * sector_size; |
553 | if (lseek64(dev_fd, off, SEEK_SET) == (off64_t) -1) |
554 | fdisk_fatal(unable_to_seek); |
555 | #else |
556 | uint64_t off = (uint64_t)secno * sector_size; |
557 | if (off > MAXINT(off_t) |
558 | || lseek(dev_fd, (off_t)off, SEEK_SET) == (off_t) -1 |
559 | ) { |
560 | fdisk_fatal(unable_to_seek); |
561 | } |
562 | #endif |
563 | } |
564 | |
565 | #if ENABLE_FEATURE_FDISK_WRITABLE |
566 | /* Read line; return 0 or first printable char */ |
567 | static int |
568 | read_line(const char *prompt) |
569 | { |
570 | int sz; |
571 | |
572 | sz = read_line_input(NULL, prompt, line_buffer, sizeof(line_buffer), /*timeout*/ -1); |
573 | if (sz <= 0) |
574 | exit(EXIT_SUCCESS); /* Ctrl-D or Ctrl-C */ |
575 | |
576 | if (line_buffer[sz-1] == '\n') |
577 | line_buffer[--sz] = '\0'; |
578 | |
579 | line_ptr = line_buffer; |
580 | while (*line_ptr != '\0' && (unsigned char)*line_ptr <= ' ') |
581 | line_ptr++; |
582 | return *line_ptr; |
583 | } |
584 | |
585 | static void |
586 | set_all_unchanged(void) |
587 | { |
588 | int i; |
589 | |
590 | for (i = 0; i < MAXIMUM_PARTS; i++) |
591 | ptes[i].changed = 0; |
592 | } |
593 | |
594 | static ALWAYS_INLINE void |
595 | set_changed(int i) |
596 | { |
597 | ptes[i].changed = 1; |
598 | } |
599 | |
600 | static ALWAYS_INLINE void |
601 | write_part_table_flag(char *b) |
602 | { |
603 | b[510] = 0x55; |
604 | b[511] = 0xaa; |
605 | } |
606 | |
607 | static char |
608 | read_nonempty(const char *mesg) |
609 | { |
610 | while (!read_line(mesg)) |
611 | continue; |
612 | return *line_ptr; |
613 | } |
614 | |
615 | static char |
616 | read_maybe_empty(const char *mesg) |
617 | { |
618 | if (!read_line(mesg)) { |
619 | line_ptr = line_buffer; |
620 | line_ptr[0] = '\n'; |
621 | line_ptr[1] = '\0'; |
622 | } |
623 | return line_ptr[0]; |
624 | } |
625 | |
626 | static int |
627 | read_hex(const char *const *sys) |
628 | { |
629 | unsigned long v; |
630 | while (1) { |
631 | read_nonempty("Hex code (type L to list codes): "); |
632 | if ((line_ptr[0] | 0x20) == 'l') { |
633 | list_types(sys); |
634 | continue; |
635 | } |
636 | v = bb_strtoul(line_ptr, NULL, 16); |
637 | if (v <= 0xff) |
638 | return v; |
639 | } |
640 | } |
641 | |
642 | static void |
643 | write_sector(sector_t secno, const void *buf) |
644 | { |
645 | seek_sector(secno); |
646 | xwrite(dev_fd, buf, sector_size); |
647 | } |
648 | #endif /* FEATURE_FDISK_WRITABLE */ |
649 | |
650 | |
651 | #include "fdisk_aix.c" |
652 | |
653 | struct sun_partition { |
654 | unsigned char info[128]; /* Informative text string */ |
655 | unsigned char spare0[14]; |
656 | struct sun_info { |
657 | unsigned char spare1; |
658 | unsigned char id; |
659 | unsigned char spare2; |
660 | unsigned char flags; |
661 | } infos[8]; |
662 | unsigned char spare1[246]; /* Boot information etc. */ |
663 | unsigned short rspeed; /* Disk rotational speed */ |
664 | unsigned short pcylcount; /* Physical cylinder count */ |
665 | unsigned short sparecyl; /* extra sects per cylinder */ |
666 | unsigned char spare2[4]; /* More magic... */ |
667 | unsigned short ilfact; /* Interleave factor */ |
668 | unsigned short ncyl; /* Data cylinder count */ |
669 | unsigned short nacyl; /* Alt. cylinder count */ |
670 | unsigned short ntrks; /* Tracks per cylinder */ |
671 | unsigned short nsect; /* Sectors per track */ |
672 | unsigned char spare3[4]; /* Even more magic... */ |
673 | struct sun_partinfo { |
674 | uint32_t start_cylinder; |
675 | uint32_t num_sectors; |
676 | } partitions[8]; |
677 | unsigned short magic; /* Magic number */ |
678 | unsigned short csum; /* Label xor'd checksum */ |
679 | } FIX_ALIASING; |
680 | typedef struct sun_partition sun_partition; |
681 | #define sunlabel ((sun_partition *)MBRbuffer) |
682 | STATIC_OSF void bsd_select(void); |
683 | STATIC_OSF void xbsd_print_disklabel(int); |
684 | #include "fdisk_osf.c" |
685 | |
686 | STATIC_GPT void gpt_list_table(int xtra); |
687 | #include "fdisk_gpt.c" |
688 | |
689 | #if ENABLE_FEATURE_SGI_LABEL || ENABLE_FEATURE_SUN_LABEL |
690 | static uint16_t |
691 | fdisk_swap16(uint16_t x) |
692 | { |
693 | return (x << 8) | (x >> 8); |
694 | } |
695 | |
696 | static uint32_t |
697 | fdisk_swap32(uint32_t x) |
698 | { |
699 | return (x << 24) | |
700 | ((x & 0xFF00) << 8) | |
701 | ((x & 0xFF0000) >> 8) | |
702 | (x >> 24); |
703 | } |
704 | #endif |
705 | |
706 | STATIC_SGI const char *const sgi_sys_types[]; |
707 | STATIC_SGI unsigned sgi_get_num_sectors(int i); |
708 | STATIC_SGI int sgi_get_sysid(int i); |
709 | STATIC_SGI void sgi_delete_partition(int i); |
710 | STATIC_SGI void sgi_change_sysid(int i, int sys); |
711 | STATIC_SGI void sgi_list_table(int xtra); |
712 | #if ENABLE_FEATURE_FDISK_ADVANCED |
713 | STATIC_SGI void sgi_set_xcyl(void); |
714 | #endif |
715 | STATIC_SGI int verify_sgi(int verbose); |
716 | STATIC_SGI void sgi_add_partition(int n, int sys); |
717 | STATIC_SGI void sgi_set_swappartition(int i); |
718 | STATIC_SGI const char *sgi_get_bootfile(void); |
719 | STATIC_SGI void sgi_set_bootfile(const char* aFile); |
720 | STATIC_SGI void create_sgiinfo(void); |
721 | STATIC_SGI void sgi_write_table(void); |
722 | STATIC_SGI void sgi_set_bootpartition(int i); |
723 | #include "fdisk_sgi.c" |
724 | |
725 | STATIC_SUN const char *const sun_sys_types[]; |
726 | STATIC_SUN void sun_delete_partition(int i); |
727 | STATIC_SUN void sun_change_sysid(int i, int sys); |
728 | STATIC_SUN void sun_list_table(int xtra); |
729 | STATIC_SUN void add_sun_partition(int n, int sys); |
730 | #if ENABLE_FEATURE_FDISK_ADVANCED |
731 | STATIC_SUN void sun_set_alt_cyl(void); |
732 | STATIC_SUN void sun_set_ncyl(int cyl); |
733 | STATIC_SUN void sun_set_xcyl(void); |
734 | STATIC_SUN void sun_set_ilfact(void); |
735 | STATIC_SUN void sun_set_rspeed(void); |
736 | STATIC_SUN void sun_set_pcylcount(void); |
737 | #endif |
738 | STATIC_SUN void toggle_sunflags(int i, unsigned char mask); |
739 | STATIC_SUN void verify_sun(void); |
740 | STATIC_SUN void sun_write_table(void); |
741 | #include "fdisk_sun.c" |
742 | |
743 | |
744 | static inline_if_little_endian unsigned |
745 | read4_little_endian(const unsigned char *cp) |
746 | { |
747 | uint32_t v; |
748 | move_from_unaligned32(v, cp); |
749 | return SWAP_LE32(v); |
750 | } |
751 | |
752 | static sector_t |
753 | get_start_sect(const struct partition *p) |
754 | { |
755 | return read4_little_endian(p->start4); |
756 | } |
757 | |
758 | static sector_t |
759 | get_nr_sects(const struct partition *p) |
760 | { |
761 | return read4_little_endian(p->size4); |
762 | } |
763 | |
764 | #if ENABLE_FEATURE_FDISK_WRITABLE |
765 | /* start_sect and nr_sects are stored little endian on all machines */ |
766 | /* moreover, they are not aligned correctly */ |
767 | static inline_if_little_endian void |
768 | store4_little_endian(unsigned char *cp, unsigned val) |
769 | { |
770 | uint32_t v = SWAP_LE32(val); |
771 | move_to_unaligned32(cp, v); |
772 | } |
773 | |
774 | static void |
775 | set_start_sect(struct partition *p, unsigned start_sect) |
776 | { |
777 | store4_little_endian(p->start4, start_sect); |
778 | } |
779 | |
780 | static void |
781 | set_nr_sects(struct partition *p, unsigned nr_sects) |
782 | { |
783 | store4_little_endian(p->size4, nr_sects); |
784 | } |
785 | #endif |
786 | |
787 | /* Allocate a buffer and read a partition table sector */ |
788 | static void |
789 | read_pte(struct pte *pe, sector_t offset) |
790 | { |
791 | pe->offset_from_dev_start = offset; |
792 | pe->sectorbuffer = xzalloc(sector_size); |
793 | seek_sector(offset); |
794 | /* xread would make us abort - bad for fdisk -l */ |
795 | if ((unsigned) full_read(dev_fd, pe->sectorbuffer, sector_size) != sector_size) |
796 | fdisk_fatal(unable_to_read); |
797 | #if ENABLE_FEATURE_FDISK_WRITABLE |
798 | pe->changed = 0; |
799 | #endif |
800 | pe->part_table = pe->ext_pointer = NULL; |
801 | } |
802 | |
803 | static sector_t |
804 | get_partition_start_from_dev_start(const struct pte *pe) |
805 | { |
806 | return pe->offset_from_dev_start + get_start_sect(pe->part_table); |
807 | } |
808 | |
809 | #if ENABLE_FEATURE_FDISK_WRITABLE |
810 | /* |
811 | * Avoid warning about DOS partitions when no DOS partition was changed. |
812 | * Here a heuristic "is probably dos partition". |
813 | * We might also do the opposite and warn in all cases except |
814 | * for "is probably nondos partition". |
815 | */ |
816 | #ifdef UNUSED |
817 | static int |
818 | is_dos_partition(int t) |
819 | { |
820 | return (t == 1 || t == 4 || t == 6 || |
821 | t == 0x0b || t == 0x0c || t == 0x0e || |
822 | t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 || |
823 | t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 || |
824 | t == 0xc1 || t == 0xc4 || t == 0xc6); |
825 | } |
826 | #endif |
827 | |
828 | static void |
829 | menu(void) |
830 | { |
831 | puts("Command Action"); |
832 | if (LABEL_IS_SUN) { |
833 | puts("a\ttoggle a read only flag"); /* sun */ |
834 | puts("b\tedit bsd disklabel"); |
835 | puts("c\ttoggle the mountable flag"); /* sun */ |
836 | puts("d\tdelete a partition"); |
837 | puts("l\tlist known partition types"); |
838 | puts("n\tadd a new partition"); |
839 | puts("o\tcreate a new empty DOS partition table"); |
840 | puts("p\tprint the partition table"); |
841 | puts("q\tquit without saving changes"); |
842 | puts("s\tcreate a new empty Sun disklabel"); /* sun */ |
843 | puts("t\tchange a partition's system id"); |
844 | puts("u\tchange display/entry units"); |
845 | puts("v\tverify the partition table"); |
846 | puts("w\twrite table to disk and exit"); |
847 | #if ENABLE_FEATURE_FDISK_ADVANCED |
848 | puts("x\textra functionality (experts only)"); |
849 | #endif |
850 | } else if (LABEL_IS_SGI) { |
851 | puts("a\tselect bootable partition"); /* sgi flavour */ |
852 | puts("b\tedit bootfile entry"); /* sgi */ |
853 | puts("c\tselect sgi swap partition"); /* sgi flavour */ |
854 | puts("d\tdelete a partition"); |
855 | puts("l\tlist known partition types"); |
856 | puts("n\tadd a new partition"); |
857 | puts("o\tcreate a new empty DOS partition table"); |
858 | puts("p\tprint the partition table"); |
859 | puts("q\tquit without saving changes"); |
860 | puts("s\tcreate a new empty Sun disklabel"); /* sun */ |
861 | puts("t\tchange a partition's system id"); |
862 | puts("u\tchange display/entry units"); |
863 | puts("v\tverify the partition table"); |
864 | puts("w\twrite table to disk and exit"); |
865 | } else if (LABEL_IS_AIX) { |
866 | puts("o\tcreate a new empty DOS partition table"); |
867 | puts("q\tquit without saving changes"); |
868 | puts("s\tcreate a new empty Sun disklabel"); /* sun */ |
869 | } else if (LABEL_IS_GPT) { |
870 | puts("o\tcreate a new empty DOS partition table"); |
871 | puts("p\tprint the partition table"); |
872 | puts("q\tquit without saving changes"); |
873 | puts("s\tcreate a new empty Sun disklabel"); /* sun */ |
874 | } else { |
875 | puts("a\ttoggle a bootable flag"); |
876 | puts("b\tedit bsd disklabel"); |
877 | puts("c\ttoggle the dos compatibility flag"); |
878 | puts("d\tdelete a partition"); |
879 | puts("l\tlist known partition types"); |
880 | puts("n\tadd a new partition"); |
881 | puts("o\tcreate a new empty DOS partition table"); |
882 | puts("p\tprint the partition table"); |
883 | puts("q\tquit without saving changes"); |
884 | puts("s\tcreate a new empty Sun disklabel"); /* sun */ |
885 | puts("t\tchange a partition's system id"); |
886 | puts("u\tchange display/entry units"); |
887 | puts("v\tverify the partition table"); |
888 | puts("w\twrite table to disk and exit"); |
889 | #if ENABLE_FEATURE_FDISK_ADVANCED |
890 | puts("x\textra functionality (experts only)"); |
891 | #endif |
892 | } |
893 | } |
894 | #endif /* FEATURE_FDISK_WRITABLE */ |
895 | |
896 | |
897 | #if ENABLE_FEATURE_FDISK_ADVANCED |
898 | static void |
899 | xmenu(void) |
900 | { |
901 | puts("Command Action"); |
902 | if (LABEL_IS_SUN) { |
903 | puts("a\tchange number of alternate cylinders"); /*sun*/ |
904 | puts("c\tchange number of cylinders"); |
905 | puts("d\tprint the raw data in the partition table"); |
906 | puts("e\tchange number of extra sectors per cylinder");/*sun*/ |
907 | puts("h\tchange number of heads"); |
908 | puts("i\tchange interleave factor"); /*sun*/ |
909 | puts("o\tchange rotation speed (rpm)"); /*sun*/ |
910 | puts("p\tprint the partition table"); |
911 | puts("q\tquit without saving changes"); |
912 | puts("r\treturn to main menu"); |
913 | puts("s\tchange number of sectors/track"); |
914 | puts("v\tverify the partition table"); |
915 | puts("w\twrite table to disk and exit"); |
916 | puts("y\tchange number of physical cylinders"); /*sun*/ |
917 | } else if (LABEL_IS_SGI) { |
918 | puts("b\tmove beginning of data in a partition"); /* !sun */ |
919 | puts("c\tchange number of cylinders"); |
920 | puts("d\tprint the raw data in the partition table"); |
921 | puts("e\tlist extended partitions"); /* !sun */ |
922 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */ |
923 | puts("h\tchange number of heads"); |
924 | puts("p\tprint the partition table"); |
925 | puts("q\tquit without saving changes"); |
926 | puts("r\treturn to main menu"); |
927 | puts("s\tchange number of sectors/track"); |
928 | puts("v\tverify the partition table"); |
929 | puts("w\twrite table to disk and exit"); |
930 | } else if (LABEL_IS_AIX) { |
931 | puts("b\tmove beginning of data in a partition"); /* !sun */ |
932 | puts("c\tchange number of cylinders"); |
933 | puts("d\tprint the raw data in the partition table"); |
934 | puts("e\tlist extended partitions"); /* !sun */ |
935 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */ |
936 | puts("h\tchange number of heads"); |
937 | puts("p\tprint the partition table"); |
938 | puts("q\tquit without saving changes"); |
939 | puts("r\treturn to main menu"); |
940 | puts("s\tchange number of sectors/track"); |
941 | puts("v\tverify the partition table"); |
942 | puts("w\twrite table to disk and exit"); |
943 | } else { |
944 | puts("b\tmove beginning of data in a partition"); /* !sun */ |
945 | puts("c\tchange number of cylinders"); |
946 | puts("d\tprint the raw data in the partition table"); |
947 | puts("e\tlist extended partitions"); /* !sun */ |
948 | puts("f\tfix partition order"); /* !sun, !aix, !sgi */ |
949 | #if ENABLE_FEATURE_SGI_LABEL |
950 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */ |
951 | #endif |
952 | puts("h\tchange number of heads"); |
953 | puts("p\tprint the partition table"); |
954 | puts("q\tquit without saving changes"); |
955 | puts("r\treturn to main menu"); |
956 | puts("s\tchange number of sectors/track"); |
957 | puts("v\tverify the partition table"); |
958 | puts("w\twrite table to disk and exit"); |
959 | } |
960 | } |
961 | #endif /* ADVANCED mode */ |
962 | |
963 | #if ENABLE_FEATURE_FDISK_WRITABLE |
964 | static const char *const * |
965 | get_sys_types(void) |
966 | { |
967 | return ( |
968 | LABEL_IS_SUN ? sun_sys_types : |
969 | LABEL_IS_SGI ? sgi_sys_types : |
970 | i386_sys_types); |
971 | } |
972 | #else |
973 | #define get_sys_types() i386_sys_types |
974 | #endif |
975 | |
976 | static const char * |
977 | partition_type(unsigned char type) |
978 | { |
979 | int i; |
980 | const char *const *types = get_sys_types(); |
981 | |
982 | for (i = 0; types[i]; i++) |
983 | if ((unsigned char)types[i][0] == type) |
984 | return types[i] + 1; |
985 | |
986 | return "Unknown"; |
987 | } |
988 | |
989 | static int |
990 | is_cleared_partition(const struct partition *p) |
991 | { |
992 | /* We consider partition "cleared" only if it has only zeros */ |
993 | const char *cp = (const char *)p; |
994 | int cnt = sizeof(*p); |
995 | char bits = 0; |
996 | while (--cnt >= 0) |
997 | bits |= *cp++; |
998 | return (bits == 0); |
999 | } |
1000 | |
1001 | static void |
1002 | clear_partition(struct partition *p) |
1003 | { |
1004 | if (p) |
1005 | memset(p, 0, sizeof(*p)); |
1006 | } |
1007 | |
1008 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1009 | static int |
1010 | get_sysid(int i) |
1011 | { |
1012 | return LABEL_IS_SUN ? sunlabel->infos[i].id : |
1013 | (LABEL_IS_SGI ? sgi_get_sysid(i) : |
1014 | ptes[i].part_table->sys_ind); |
1015 | } |
1016 | |
1017 | static void |
1018 | list_types(const char *const *sys) |
1019 | { |
1020 | enum { COLS = 3 }; |
1021 | |
1022 | unsigned last[COLS]; |
1023 | unsigned done, next, size; |
1024 | int i; |
1025 | |
1026 | for (size = 0; sys[size]; size++) |
1027 | continue; |
1028 | |
1029 | done = 0; |
1030 | for (i = COLS-1; i >= 0; i--) { |
1031 | done += (size + i - done) / (i + 1); |
1032 | last[COLS-1 - i] = done; |
1033 | } |
1034 | |
1035 | i = done = next = 0; |
1036 | do { |
1037 | printf("%c%2x %-22.22s", i ? ' ' : '\n', |
1038 | (unsigned char)sys[next][0], |
1039 | sys[next] + 1); |
1040 | next = last[i++] + done; |
1041 | if (i >= COLS || next >= last[i]) { |
1042 | i = 0; |
1043 | next = ++done; |
1044 | } |
1045 | } while (done < last[0]); |
1046 | bb_putchar('\n'); |
1047 | } |
1048 | |
1049 | #define set_hsc(h, s, c, sector) do \ |
1050 | { \ |
1051 | s = sector % g_sectors + 1; \ |
1052 | sector /= g_sectors; \ |
1053 | h = sector % g_heads; \ |
1054 | sector /= g_heads; \ |
1055 | c = sector & 0xff; \ |
1056 | s |= (sector >> 2) & 0xc0; \ |
1057 | } while (0) |
1058 | |
1059 | static void set_hsc_start_end(struct partition *p, sector_t start, sector_t stop) |
1060 | { |
1061 | if (dos_compatible_flag && (start / (g_sectors * g_heads) > 1023)) |
1062 | start = g_heads * g_sectors * 1024 - 1; |
1063 | set_hsc(p->head, p->sector, p->cyl, start); |
1064 | |
1065 | if (dos_compatible_flag && (stop / (g_sectors * g_heads) > 1023)) |
1066 | stop = g_heads * g_sectors * 1024 - 1; |
1067 | set_hsc(p->end_head, p->end_sector, p->end_cyl, stop); |
1068 | } |
1069 | |
1070 | static void |
1071 | set_partition(int i, int doext, sector_t start, sector_t stop, int sysid) |
1072 | { |
1073 | struct partition *p; |
1074 | sector_t offset; |
1075 | |
1076 | if (doext) { |
1077 | p = ptes[i].ext_pointer; |
1078 | offset = extended_offset; |
1079 | } else { |
1080 | p = ptes[i].part_table; |
1081 | offset = ptes[i].offset_from_dev_start; |
1082 | } |
1083 | p->boot_ind = 0; |
1084 | p->sys_ind = sysid; |
1085 | set_start_sect(p, start - offset); |
1086 | set_nr_sects(p, stop - start + 1); |
1087 | set_hsc_start_end(p, start, stop); |
1088 | ptes[i].changed = 1; |
1089 | } |
1090 | #endif |
1091 | |
1092 | static int |
1093 | warn_geometry(void) |
1094 | { |
1095 | if (g_heads && g_sectors && g_cylinders) |
1096 | return 0; |
1097 | |
1098 | printf("Unknown value(s) for:"); |
1099 | if (!g_heads) |
1100 | printf(" heads"); |
1101 | if (!g_sectors) |
1102 | printf(" sectors"); |
1103 | if (!g_cylinders) |
1104 | printf(" cylinders"); |
1105 | printf( |
1106 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1107 | " (settable in the extra functions menu)" |
1108 | #endif |
1109 | "\n"); |
1110 | return 1; |
1111 | } |
1112 | |
1113 | static void |
1114 | update_units(void) |
1115 | { |
1116 | int cyl_units = g_heads * g_sectors; |
1117 | |
1118 | if (display_in_cyl_units && cyl_units) |
1119 | units_per_sector = cyl_units; |
1120 | else |
1121 | units_per_sector = 1; /* in sectors */ |
1122 | } |
1123 | |
1124 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1125 | static void |
1126 | warn_cylinders(void) |
1127 | { |
1128 | if (LABEL_IS_DOS && g_cylinders > 1024 && !nowarn) |
1129 | printf("\n" |
1130 | "The number of cylinders for this disk is set to %u.\n" |
1131 | "There is nothing wrong with that, but this is larger than 1024,\n" |
1132 | "and could in certain setups cause problems with:\n" |
1133 | "1) software that runs at boot time (e.g., old versions of LILO)\n" |
1134 | "2) booting and partitioning software from other OSs\n" |
1135 | " (e.g., DOS FDISK, OS/2 FDISK)\n", |
1136 | g_cylinders); |
1137 | } |
1138 | #endif |
1139 | |
1140 | static void |
1141 | read_extended(int ext) |
1142 | { |
1143 | int i; |
1144 | struct pte *pex; |
1145 | struct partition *p, *q; |
1146 | |
1147 | ext_index = ext; |
1148 | pex = &ptes[ext]; |
1149 | pex->ext_pointer = pex->part_table; |
1150 | |
1151 | p = pex->part_table; |
1152 | if (!get_start_sect(p)) { |
1153 | printf("Bad offset in primary extended partition\n"); |
1154 | return; |
1155 | } |
1156 | |
1157 | while (IS_EXTENDED(p->sys_ind)) { |
1158 | struct pte *pe = &ptes[g_partitions]; |
1159 | |
1160 | if (g_partitions >= MAXIMUM_PARTS) { |
1161 | /* This is not a Linux restriction, but |
1162 | this program uses arrays of size MAXIMUM_PARTS. |
1163 | Do not try to 'improve' this test. */ |
1164 | struct pte *pre = &ptes[g_partitions - 1]; |
1165 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1166 | printf("Warning: deleting partitions after %u\n", |
1167 | g_partitions); |
1168 | pre->changed = 1; |
1169 | #endif |
1170 | clear_partition(pre->ext_pointer); |
1171 | return; |
1172 | } |
1173 | |
1174 | read_pte(pe, extended_offset + get_start_sect(p)); |
1175 | |
1176 | if (!extended_offset) |
1177 | extended_offset = get_start_sect(p); |
1178 | |
1179 | q = p = pt_offset(pe->sectorbuffer, 0); |
1180 | for (i = 0; i < 4; i++, p++) if (get_nr_sects(p)) { |
1181 | if (IS_EXTENDED(p->sys_ind)) { |
1182 | if (pe->ext_pointer) |
1183 | printf("Warning: extra link " |
1184 | "pointer in partition table" |
1185 | " %u\n", g_partitions + 1); |
1186 | else |
1187 | pe->ext_pointer = p; |
1188 | } else if (p->sys_ind) { |
1189 | if (pe->part_table) |
1190 | printf("Warning: ignoring extra " |
1191 | "data in partition table" |
1192 | " %u\n", g_partitions + 1); |
1193 | else |
1194 | pe->part_table = p; |
1195 | } |
1196 | } |
1197 | |
1198 | /* very strange code here... */ |
1199 | if (!pe->part_table) { |
1200 | if (q != pe->ext_pointer) |
1201 | pe->part_table = q; |
1202 | else |
1203 | pe->part_table = q + 1; |
1204 | } |
1205 | if (!pe->ext_pointer) { |
1206 | if (q != pe->part_table) |
1207 | pe->ext_pointer = q; |
1208 | else |
1209 | pe->ext_pointer = q + 1; |
1210 | } |
1211 | |
1212 | p = pe->ext_pointer; |
1213 | g_partitions++; |
1214 | } |
1215 | |
1216 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1217 | /* remove empty links */ |
1218 | remove: |
1219 | for (i = 4; i < g_partitions; i++) { |
1220 | struct pte *pe = &ptes[i]; |
1221 | |
1222 | if (!get_nr_sects(pe->part_table) |
1223 | && (g_partitions > 5 || ptes[4].part_table->sys_ind) |
1224 | ) { |
1225 | printf("Omitting empty partition (%u)\n", i+1); |
1226 | delete_partition(i); |
1227 | goto remove; /* numbering changed */ |
1228 | } |
1229 | } |
1230 | #endif |
1231 | } |
1232 | |
1233 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1234 | static void |
1235 | create_doslabel(void) |
1236 | { |
1237 | printf(msg_building_new_label, "DOS disklabel"); |
1238 | |
1239 | current_label_type = LABEL_DOS; |
1240 | #if ENABLE_FEATURE_OSF_LABEL |
1241 | possibly_osf_label = 0; |
1242 | #endif |
1243 | g_partitions = 4; |
1244 | |
1245 | memset(&MBRbuffer[510 - 4*16], 0, 4*16); |
1246 | write_part_table_flag(MBRbuffer); |
1247 | extended_offset = 0; |
1248 | set_all_unchanged(); |
1249 | set_changed(0); |
1250 | get_boot(CREATE_EMPTY_DOS); |
1251 | } |
1252 | #endif |
1253 | |
1254 | static void |
1255 | get_sectorsize(void) |
1256 | { |
1257 | if (!user_set_sector_size) { |
1258 | int arg; |
1259 | if (ioctl(dev_fd, BLKSSZGET, &arg) == 0) |
1260 | sector_size = arg; |
1261 | if (sector_size != DEFAULT_SECTOR_SIZE) |
1262 | printf("Note: sector size is %u " |
1263 | "(not " DEFAULT_SECTOR_SIZE_STR ")\n", |
1264 | sector_size); |
1265 | } |
1266 | } |
1267 | |
1268 | static void |
1269 | get_kernel_geometry(void) |
1270 | { |
1271 | struct hd_geometry geometry; |
1272 | |
1273 | if (!ioctl(dev_fd, HDIO_GETGEO, &geometry)) { |
1274 | kern_heads = geometry.heads; |
1275 | kern_sectors = geometry.sectors; |
1276 | /* never use geometry.cylinders - it is truncated */ |
1277 | } |
1278 | } |
1279 | |
1280 | static void |
1281 | get_partition_table_geometry(void) |
1282 | { |
1283 | const unsigned char *bufp = (const unsigned char *)MBRbuffer; |
1284 | struct partition *p; |
1285 | int i, h, s, hh, ss; |
1286 | int first = 1; |
1287 | int bad = 0; |
1288 | |
1289 | if (!(valid_part_table_flag((char*)bufp))) |
1290 | return; |
1291 | |
1292 | hh = ss = 0; |
1293 | for (i = 0; i < 4; i++) { |
1294 | p = pt_offset(bufp, i); |
1295 | if (p->sys_ind != 0) { |
1296 | h = p->end_head + 1; |
1297 | s = (p->end_sector & 077); |
1298 | if (first) { |
1299 | hh = h; |
1300 | ss = s; |
1301 | first = 0; |
1302 | } else if (hh != h || ss != s) |
1303 | bad = 1; |
1304 | } |
1305 | } |
1306 | |
1307 | if (!first && !bad) { |
1308 | pt_heads = hh; |
1309 | pt_sectors = ss; |
1310 | } |
1311 | } |
1312 | |
1313 | static void |
1314 | get_geometry(void) |
1315 | { |
1316 | int sec_fac; |
1317 | |
1318 | get_sectorsize(); |
1319 | sec_fac = sector_size / 512; |
1320 | #if ENABLE_FEATURE_SUN_LABEL |
1321 | guess_device_type(); |
1322 | #endif |
1323 | g_heads = g_cylinders = g_sectors = 0; |
1324 | kern_heads = kern_sectors = 0; |
1325 | pt_heads = pt_sectors = 0; |
1326 | |
1327 | get_kernel_geometry(); |
1328 | get_partition_table_geometry(); |
1329 | |
1330 | g_heads = user_heads ? user_heads : |
1331 | pt_heads ? pt_heads : |
1332 | kern_heads ? kern_heads : 255; |
1333 | g_sectors = user_sectors ? user_sectors : |
1334 | pt_sectors ? pt_sectors : |
1335 | kern_sectors ? kern_sectors : 63; |
1336 | total_number_of_sectors = bb_BLKGETSIZE_sectors(dev_fd); |
1337 | |
1338 | sector_offset = 1; |
1339 | if (dos_compatible_flag) |
1340 | sector_offset = g_sectors; |
1341 | |
1342 | g_cylinders = total_number_of_sectors / (g_heads * g_sectors * sec_fac); |
1343 | if (!g_cylinders) |
1344 | g_cylinders = user_cylinders; |
1345 | } |
1346 | |
1347 | /* |
1348 | * Opens disk_device and optionally reads MBR. |
1349 | * If what == OPEN_MAIN: |
1350 | * Open device, read MBR. Abort program on short read. Create empty |
1351 | * disklabel if the on-disk structure is invalid (WRITABLE mode). |
1352 | * If what == TRY_ONLY: |
1353 | * Open device, read MBR. Return an error if anything is out of place. |
1354 | * Do not create an empty disklabel. This is used for the "list" |
1355 | * operations: "fdisk -l /dev/sda" and "fdisk -l" (all devices). |
1356 | * If what == CREATE_EMPTY_*: |
1357 | * This means that get_boot() was called recursively from create_*label(). |
1358 | * Do not re-open the device; just set up the ptes array and print |
1359 | * geometry warnings. |
1360 | * |
1361 | * Returns: |
1362 | * -1: no 0xaa55 flag present (possibly entire disk BSD) |
1363 | * 0: found or created label |
1364 | * 1: I/O error |
1365 | */ |
1366 | #if ENABLE_FEATURE_SUN_LABEL || ENABLE_FEATURE_FDISK_WRITABLE |
1367 | static int get_boot(enum action what) |
1368 | #else |
1369 | static int get_boot(void) |
1370 | #define get_boot(what) get_boot() |
1371 | #endif |
1372 | { |
1373 | int i, fd; |
1374 | |
1375 | g_partitions = 4; |
1376 | for (i = 0; i < 4; i++) { |
1377 | struct pte *pe = &ptes[i]; |
1378 | pe->part_table = pt_offset(MBRbuffer, i); |
1379 | pe->ext_pointer = NULL; |
1380 | pe->offset_from_dev_start = 0; |
1381 | pe->sectorbuffer = MBRbuffer; |
1382 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1383 | pe->changed = (what == CREATE_EMPTY_DOS); |
1384 | #endif |
1385 | } |
1386 | |
1387 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1388 | // ALERT! highly idiotic design! |
1389 | // We end up here when we call get_boot() recursively |
1390 | // via get_boot() [table is bad] -> create_doslabel() -> get_boot(CREATE_EMPTY_DOS). |
1391 | // or get_boot() [table is bad] -> create_sunlabel() -> get_boot(CREATE_EMPTY_SUN). |
1392 | // (just factor out re-init of ptes[0,1,2,3] in a separate fn instead?) |
1393 | // So skip opening device _again_... |
1394 | if (what == CREATE_EMPTY_DOS IF_FEATURE_SUN_LABEL(|| what == CREATE_EMPTY_SUN)) |
1395 | goto created_table; |
1396 | |
1397 | fd = open(disk_device, (option_mask32 & OPT_l) ? O_RDONLY : O_RDWR); |
1398 | |
1399 | if (fd < 0) { |
1400 | fd = open(disk_device, O_RDONLY); |
1401 | if (fd < 0) { |
1402 | if (what == TRY_ONLY) |
1403 | return 1; |
1404 | fdisk_fatal(unable_to_open); |
1405 | } |
1406 | printf("'%s' is opened for read only\n", disk_device); |
1407 | } |
1408 | xmove_fd(fd, dev_fd); |
1409 | if (512 != full_read(dev_fd, MBRbuffer, 512)) { |
1410 | if (what == TRY_ONLY) { |
1411 | close_dev_fd(); |
1412 | return 1; |
1413 | } |
1414 | fdisk_fatal(unable_to_read); |
1415 | } |
1416 | #else |
1417 | fd = open(disk_device, O_RDONLY); |
1418 | if (fd < 0) |
1419 | return 1; |
1420 | if (512 != full_read(fd, MBRbuffer, 512)) { |
1421 | close(fd); |
1422 | return 1; |
1423 | } |
1424 | xmove_fd(fd, dev_fd); |
1425 | #endif |
1426 | |
1427 | get_geometry(); |
1428 | update_units(); |
1429 | |
1430 | #if ENABLE_FEATURE_SUN_LABEL |
1431 | if (check_sun_label()) |
1432 | return 0; |
1433 | #endif |
1434 | #if ENABLE_FEATURE_SGI_LABEL |
1435 | if (check_sgi_label()) |
1436 | return 0; |
1437 | #endif |
1438 | #if ENABLE_FEATURE_AIX_LABEL |
1439 | if (check_aix_label()) |
1440 | return 0; |
1441 | #endif |
1442 | #if ENABLE_FEATURE_GPT_LABEL |
1443 | if (check_gpt_label()) |
1444 | return 0; |
1445 | #endif |
1446 | #if ENABLE_FEATURE_OSF_LABEL |
1447 | if (check_osf_label()) { |
1448 | possibly_osf_label = 1; |
1449 | if (!valid_part_table_flag(MBRbuffer)) { |
1450 | current_label_type = LABEL_OSF; |
1451 | return 0; |
1452 | } |
1453 | printf("This disk has both DOS and BSD magic.\n" |
1454 | "Give the 'b' command to go to BSD mode.\n"); |
1455 | } |
1456 | #endif |
1457 | |
1458 | #if !ENABLE_FEATURE_FDISK_WRITABLE |
1459 | if (!valid_part_table_flag(MBRbuffer)) |
1460 | return -1; |
1461 | #else |
1462 | if (!valid_part_table_flag(MBRbuffer)) { |
1463 | if (what == OPEN_MAIN) { |
1464 | printf("Device contains neither a valid DOS " |
1465 | "partition table, nor Sun, SGI, OSF or GPT " |
1466 | "disklabel\n"); |
1467 | #ifdef __sparc__ |
1468 | IF_FEATURE_SUN_LABEL(create_sunlabel();) |
1469 | #else |
1470 | create_doslabel(); |
1471 | #endif |
1472 | return 0; |
1473 | } |
1474 | /* TRY_ONLY: */ |
1475 | return -1; |
1476 | } |
1477 | created_table: |
1478 | #endif /* FEATURE_FDISK_WRITABLE */ |
1479 | |
1480 | |
1481 | IF_FEATURE_FDISK_WRITABLE(warn_cylinders();) |
1482 | warn_geometry(); |
1483 | |
1484 | for (i = 0; i < 4; i++) { |
1485 | if (IS_EXTENDED(ptes[i].part_table->sys_ind)) { |
1486 | if (g_partitions != 4) |
1487 | printf("Ignoring extra extended " |
1488 | "partition %u\n", i + 1); |
1489 | else |
1490 | read_extended(i); |
1491 | } |
1492 | } |
1493 | |
1494 | for (i = 3; i < g_partitions; i++) { |
1495 | struct pte *pe = &ptes[i]; |
1496 | if (!valid_part_table_flag(pe->sectorbuffer)) { |
1497 | printf("Warning: invalid flag 0x%02x,0x%02x of partition " |
1498 | "table %u will be corrected by w(rite)\n", |
1499 | pe->sectorbuffer[510], |
1500 | pe->sectorbuffer[511], |
1501 | i + 1); |
1502 | IF_FEATURE_FDISK_WRITABLE(pe->changed = 1;) |
1503 | } |
1504 | } |
1505 | |
1506 | return 0; |
1507 | } |
1508 | |
1509 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1510 | /* |
1511 | * Print the message MESG, then read an integer between LOW and HIGH (inclusive). |
1512 | * If the user hits Enter, DFLT is returned. |
1513 | * Answers like +10 are interpreted as offsets from BASE. |
1514 | * |
1515 | * There is no default if DFLT is not between LOW and HIGH. |
1516 | */ |
1517 | static sector_t |
1518 | read_int(sector_t low, sector_t dflt, sector_t high, sector_t base, const char *mesg) |
1519 | { |
1520 | sector_t value; |
1521 | int default_ok = 1; |
1522 | const char *fmt = "%s (%u-%u, default %u): "; |
1523 | |
1524 | if (dflt < low || dflt > high) { |
1525 | fmt = "%s (%u-%u): "; |
1526 | default_ok = 0; |
1527 | } |
1528 | |
1529 | while (1) { |
1530 | int use_default = default_ok; |
1531 | |
1532 | /* ask question and read answer */ |
1533 | do { |
1534 | printf(fmt, mesg, low, high, dflt); |
1535 | read_maybe_empty(""); |
1536 | } while (*line_ptr != '\n' && !isdigit(*line_ptr) |
1537 | && *line_ptr != '-' && *line_ptr != '+'); |
1538 | |
1539 | if (*line_ptr == '+' || *line_ptr == '-') { |
1540 | int minus = (*line_ptr == '-'); |
1541 | int absolute = 0; |
1542 | |
1543 | value = atoi(line_ptr + 1); |
1544 | |
1545 | /* (1) if 2nd char is digit, use_default = 0. |
1546 | * (2) move line_ptr to first non-digit. */ |
1547 | while (isdigit(*++line_ptr)) |
1548 | use_default = 0; |
1549 | |
1550 | switch (*line_ptr) { |
1551 | case 'c': |
1552 | case 'C': |
1553 | if (!display_in_cyl_units) |
1554 | value *= g_heads * g_sectors; |
1555 | break; |
1556 | case 'K': |
1557 | absolute = 1024; |
1558 | break; |
1559 | case 'k': |
1560 | absolute = 1000; |
1561 | break; |
1562 | case 'm': |
1563 | case 'M': |
1564 | absolute = 1000000; |
1565 | break; |
1566 | case 'g': |
1567 | case 'G': |
1568 | absolute = 1000000000; |
1569 | break; |
1570 | default: |
1571 | break; |
1572 | } |
1573 | if (absolute) { |
1574 | ullong bytes; |
1575 | unsigned long unit; |
1576 | |
1577 | bytes = (ullong) value * absolute; |
1578 | unit = sector_size * units_per_sector; |
1579 | bytes += unit/2; /* round */ |
1580 | bytes /= unit; |
1581 | value = bytes; |
1582 | } |
1583 | if (minus) |
1584 | value = -value; |
1585 | value += base; |
1586 | } else { |
1587 | value = atoi(line_ptr); |
1588 | while (isdigit(*line_ptr)) { |
1589 | line_ptr++; |
1590 | use_default = 0; |
1591 | } |
1592 | } |
1593 | if (use_default) { |
1594 | value = dflt; |
1595 | printf("Using default value %u\n", value); |
1596 | } |
1597 | if (value >= low && value <= high) |
1598 | break; |
1599 | printf("Value is out of range\n"); |
1600 | } |
1601 | return value; |
1602 | } |
1603 | |
1604 | static unsigned |
1605 | get_partition(int warn, unsigned max) |
1606 | { |
1607 | struct pte *pe; |
1608 | unsigned i; |
1609 | |
1610 | i = read_int(1, 0, max, 0, "Partition number") - 1; |
1611 | pe = &ptes[i]; |
1612 | |
1613 | if (warn) { |
1614 | if ((!LABEL_IS_SUN && !LABEL_IS_SGI && !pe->part_table->sys_ind) |
1615 | || (LABEL_IS_SUN && (!sunlabel->partitions[i].num_sectors || !sunlabel->infos[i].id)) |
1616 | || (LABEL_IS_SGI && !sgi_get_num_sectors(i)) |
1617 | ) { |
1618 | printf("Warning: partition %u has empty type\n", i+1); |
1619 | } |
1620 | } |
1621 | return i; |
1622 | } |
1623 | |
1624 | static int |
1625 | get_existing_partition(int warn, unsigned max) |
1626 | { |
1627 | int pno = -1; |
1628 | unsigned i; |
1629 | |
1630 | for (i = 0; i < max; i++) { |
1631 | struct pte *pe = &ptes[i]; |
1632 | struct partition *p = pe->part_table; |
1633 | |
1634 | if (p && !is_cleared_partition(p)) { |
1635 | if (pno >= 0) |
1636 | goto not_unique; |
1637 | pno = i; |
1638 | } |
1639 | } |
1640 | if (pno >= 0) { |
1641 | printf("Selected partition %u\n", pno+1); |
1642 | return pno; |
1643 | } |
1644 | printf("No partition is defined yet!\n"); |
1645 | return -1; |
1646 | |
1647 | not_unique: |
1648 | return get_partition(warn, max); |
1649 | } |
1650 | |
1651 | static int |
1652 | get_nonexisting_partition(int warn, unsigned max) |
1653 | { |
1654 | int pno = -1; |
1655 | unsigned i; |
1656 | |
1657 | for (i = 0; i < max; i++) { |
1658 | struct pte *pe = &ptes[i]; |
1659 | struct partition *p = pe->part_table; |
1660 | |
1661 | if (p && is_cleared_partition(p)) { |
1662 | if (pno >= 0) |
1663 | goto not_unique; |
1664 | pno = i; |
1665 | } |
1666 | } |
1667 | if (pno >= 0) { |
1668 | printf("Selected partition %u\n", pno+1); |
1669 | return pno; |
1670 | } |
1671 | printf("All primary partitions have been defined already!\n"); |
1672 | return -1; |
1673 | |
1674 | not_unique: |
1675 | return get_partition(warn, max); |
1676 | } |
1677 | |
1678 | |
1679 | static void |
1680 | change_units(void) |
1681 | { |
1682 | display_in_cyl_units = !display_in_cyl_units; |
1683 | update_units(); |
1684 | printf("Changing display/entry units to %s\n", |
1685 | str_units(PLURAL)); |
1686 | } |
1687 | |
1688 | static void |
1689 | toggle_active(int i) |
1690 | { |
1691 | struct pte *pe = &ptes[i]; |
1692 | struct partition *p = pe->part_table; |
1693 | |
1694 | if (IS_EXTENDED(p->sys_ind) && !p->boot_ind) |
1695 | printf("WARNING: Partition %u is an extended partition\n", i + 1); |
1696 | p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG); |
1697 | pe->changed = 1; |
1698 | } |
1699 | |
1700 | static void |
1701 | toggle_dos_compatibility_flag(void) |
1702 | { |
1703 | dos_compatible_flag = 1 - dos_compatible_flag; |
1704 | if (dos_compatible_flag) { |
1705 | sector_offset = g_sectors; |
1706 | printf("DOS Compatibility flag is set\n"); |
1707 | } else { |
1708 | sector_offset = 1; |
1709 | printf("DOS Compatibility flag is not set\n"); |
1710 | } |
1711 | } |
1712 | |
1713 | static void |
1714 | delete_partition(int i) |
1715 | { |
1716 | struct pte *pe = &ptes[i]; |
1717 | struct partition *p = pe->part_table; |
1718 | struct partition *q = pe->ext_pointer; |
1719 | |
1720 | /* Note that for the fifth partition (i == 4) we don't actually |
1721 | * decrement partitions. |
1722 | */ |
1723 | |
1724 | if (warn_geometry()) |
1725 | return; /* C/H/S not set */ |
1726 | pe->changed = 1; |
1727 | |
1728 | if (LABEL_IS_SUN) { |
1729 | sun_delete_partition(i); |
1730 | return; |
1731 | } |
1732 | if (LABEL_IS_SGI) { |
1733 | sgi_delete_partition(i); |
1734 | return; |
1735 | } |
1736 | |
1737 | if (i < 4) { |
1738 | if (IS_EXTENDED(p->sys_ind) && i == ext_index) { |
1739 | g_partitions = 4; |
1740 | ptes[ext_index].ext_pointer = NULL; |
1741 | extended_offset = 0; |
1742 | } |
1743 | clear_partition(p); |
1744 | return; |
1745 | } |
1746 | |
1747 | if (!q->sys_ind && i > 4) { |
1748 | /* the last one in the chain - just delete */ |
1749 | --g_partitions; |
1750 | --i; |
1751 | clear_partition(ptes[i].ext_pointer); |
1752 | ptes[i].changed = 1; |
1753 | } else { |
1754 | /* not the last one - further ones will be moved down */ |
1755 | if (i > 4) { |
1756 | /* delete this link in the chain */ |
1757 | p = ptes[i-1].ext_pointer; |
1758 | *p = *q; |
1759 | set_start_sect(p, get_start_sect(q)); |
1760 | set_nr_sects(p, get_nr_sects(q)); |
1761 | ptes[i-1].changed = 1; |
1762 | } else if (g_partitions > 5) { /* 5 will be moved to 4 */ |
1763 | /* the first logical in a longer chain */ |
1764 | pe = &ptes[5]; |
1765 | |
1766 | if (pe->part_table) /* prevent SEGFAULT */ |
1767 | set_start_sect(pe->part_table, |
1768 | get_partition_start_from_dev_start(pe) - |
1769 | extended_offset); |
1770 | pe->offset_from_dev_start = extended_offset; |
1771 | pe->changed = 1; |
1772 | } |
1773 | |
1774 | if (g_partitions > 5) { |
1775 | g_partitions--; |
1776 | while (i < g_partitions) { |
1777 | ptes[i] = ptes[i+1]; |
1778 | i++; |
1779 | } |
1780 | } else { |
1781 | /* the only logical: clear only */ |
1782 | clear_partition(ptes[i].part_table); |
1783 | } |
1784 | } |
1785 | } |
1786 | |
1787 | static void |
1788 | change_sysid(void) |
1789 | { |
1790 | int i, sys, origsys; |
1791 | struct partition *p; |
1792 | |
1793 | /* If sgi_label then don't use get_existing_partition, |
1794 | let the user select a partition, since get_existing_partition() |
1795 | only works for Linux like partition tables. */ |
1796 | if (!LABEL_IS_SGI) { |
1797 | i = get_existing_partition(0, g_partitions); |
1798 | } else { |
1799 | i = get_partition(0, g_partitions); |
1800 | } |
1801 | if (i == -1) |
1802 | return; |
1803 | p = ptes[i].part_table; |
1804 | origsys = sys = get_sysid(i); |
1805 | |
1806 | /* if changing types T to 0 is allowed, then |
1807 | the reverse change must be allowed, too */ |
1808 | if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN && !get_nr_sects(p)) { |
1809 | printf("Partition %u does not exist yet!\n", i + 1); |
1810 | return; |
1811 | } |
1812 | while (1) { |
1813 | sys = read_hex(get_sys_types()); |
1814 | |
1815 | if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN) { |
1816 | printf("Type 0 means free space to many systems\n" |
1817 | "(but not to Linux). Having partitions of\n" |
1818 | "type 0 is probably unwise.\n"); |
1819 | /* break; */ |
1820 | } |
1821 | |
1822 | if (!LABEL_IS_SUN && !LABEL_IS_SGI) { |
1823 | if (IS_EXTENDED(sys) != IS_EXTENDED(p->sys_ind)) { |
1824 | printf("You cannot change a partition into" |
1825 | " an extended one or vice versa\n"); |
1826 | break; |
1827 | } |
1828 | } |
1829 | |
1830 | if (sys < 256) { |
1831 | #if ENABLE_FEATURE_SUN_LABEL |
1832 | if (LABEL_IS_SUN && i == 2 && sys != SUN_WHOLE_DISK) |
1833 | printf("Consider leaving partition 3 " |
1834 | "as Whole disk (5),\n" |
1835 | "as SunOS/Solaris expects it and " |
1836 | "even Linux likes it\n\n"); |
1837 | #endif |
1838 | #if ENABLE_FEATURE_SGI_LABEL |
1839 | if (LABEL_IS_SGI && |
1840 | ( |
1841 | (i == 10 && sys != SGI_ENTIRE_DISK) || |
1842 | (i == 8 && sys != 0) |
1843 | ) |
1844 | ) { |
1845 | printf("Consider leaving partition 9 " |
1846 | "as volume header (0),\nand " |
1847 | "partition 11 as entire volume (6)" |
1848 | "as IRIX expects it\n\n"); |
1849 | } |
1850 | #endif |
1851 | if (sys == origsys) |
1852 | break; |
1853 | if (LABEL_IS_SUN) { |
1854 | sun_change_sysid(i, sys); |
1855 | } else if (LABEL_IS_SGI) { |
1856 | sgi_change_sysid(i, sys); |
1857 | } else |
1858 | p->sys_ind = sys; |
1859 | |
1860 | printf("Changed system type of partition %u " |
1861 | "to %x (%s)\n", i + 1, sys, |
1862 | partition_type(sys)); |
1863 | ptes[i].changed = 1; |
1864 | //if (is_dos_partition(origsys) || is_dos_partition(sys)) |
1865 | // dos_changed = 1; |
1866 | break; |
1867 | } |
1868 | } |
1869 | } |
1870 | #endif /* FEATURE_FDISK_WRITABLE */ |
1871 | |
1872 | |
1873 | /* check_consistency() and linear2chs() added Sat Mar 6 12:28:16 1993, |
1874 | * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross, |
1875 | * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S. |
1876 | * Lubkin Oct. 1991). */ |
1877 | |
1878 | static void |
1879 | linear2chs(unsigned ls, unsigned *c, unsigned *h, unsigned *s) |
1880 | { |
1881 | int spc = g_heads * g_sectors; |
1882 | |
1883 | *c = ls / spc; |
1884 | ls = ls % spc; |
1885 | *h = ls / g_sectors; |
1886 | *s = ls % g_sectors + 1; /* sectors count from 1 */ |
1887 | } |
1888 | |
1889 | static void |
1890 | check_consistency(const struct partition *p, int partition) |
1891 | { |
1892 | unsigned pbc, pbh, pbs; /* physical beginning c, h, s */ |
1893 | unsigned pec, peh, pes; /* physical ending c, h, s */ |
1894 | unsigned lbc, lbh, lbs; /* logical beginning c, h, s */ |
1895 | unsigned lec, leh, les; /* logical ending c, h, s */ |
1896 | |
1897 | if (!g_heads || !g_sectors || (partition >= 4)) |
1898 | return; /* do not check extended partitions */ |
1899 | |
1900 | /* physical beginning c, h, s */ |
1901 | pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300); |
1902 | pbh = p->head; |
1903 | pbs = p->sector & 0x3f; |
1904 | |
1905 | /* physical ending c, h, s */ |
1906 | pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300); |
1907 | peh = p->end_head; |
1908 | pes = p->end_sector & 0x3f; |
1909 | |
1910 | /* compute logical beginning (c, h, s) */ |
1911 | linear2chs(get_start_sect(p), &lbc, &lbh, &lbs); |
1912 | |
1913 | /* compute logical ending (c, h, s) */ |
1914 | linear2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les); |
1915 | |
1916 | /* Same physical / logical beginning? */ |
1917 | if (g_cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) { |
1918 | printf("Partition %u has different physical/logical " |
1919 | "beginnings (non-Linux?):\n", partition + 1); |
1920 | printf(" phys=(%u, %u, %u) ", pbc, pbh, pbs); |
1921 | printf("logical=(%u, %u, %u)\n", lbc, lbh, lbs); |
1922 | } |
1923 | |
1924 | /* Same physical / logical ending? */ |
1925 | if (g_cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) { |
1926 | printf("Partition %u has different physical/logical " |
1927 | "endings:\n", partition + 1); |
1928 | printf(" phys=(%u, %u, %u) ", pec, peh, pes); |
1929 | printf("logical=(%u, %u, %u)\n", lec, leh, les); |
1930 | } |
1931 | |
1932 | /* Ending on cylinder boundary? */ |
1933 | if (peh != (g_heads - 1) || pes != g_sectors) { |
1934 | printf("Partition %u does not end on cylinder boundary\n", |
1935 | partition + 1); |
1936 | } |
1937 | } |
1938 | |
1939 | static void |
1940 | list_disk_geometry(void) |
1941 | { |
1942 | ullong bytes = ((ullong)total_number_of_sectors << 9); |
1943 | long megabytes = bytes / 1000000; |
1944 | |
1945 | if (megabytes < 10000) |
1946 | printf("\nDisk %s: %lu MB, %llu bytes\n", |
1947 | disk_device, megabytes, bytes); |
1948 | else |
1949 | printf("\nDisk %s: %lu.%lu GB, %llu bytes\n", |
1950 | disk_device, megabytes/1000, (megabytes/100)%10, bytes); |
1951 | printf("%u heads, %u sectors/track, %u cylinders", |
1952 | g_heads, g_sectors, g_cylinders); |
1953 | if (units_per_sector == 1) |
1954 | printf(", total %"SECT_FMT"u sectors", |
1955 | total_number_of_sectors / (sector_size/512)); |
1956 | printf("\nUnits = %s of %u * %u = %u bytes\n\n", |
1957 | str_units(PLURAL), |
1958 | units_per_sector, sector_size, units_per_sector * sector_size); |
1959 | } |
1960 | |
1961 | /* |
1962 | * Check whether partition entries are ordered by their starting positions. |
1963 | * Return 0 if OK. Return i if partition i should have been earlier. |
1964 | * Two separate checks: primary and logical partitions. |
1965 | */ |
1966 | static int |
1967 | wrong_p_order(int *prev) |
1968 | { |
1969 | const struct pte *pe; |
1970 | const struct partition *p; |
1971 | sector_t last_p_start_pos = 0, p_start_pos; |
1972 | int i, last_i = 0; |
1973 | |
1974 | for (i = 0; i < g_partitions; i++) { |
1975 | if (i == 4) { |
1976 | last_i = 4; |
1977 | last_p_start_pos = 0; |
1978 | } |
1979 | pe = &ptes[i]; |
1980 | p = pe->part_table; |
1981 | if (p->sys_ind) { |
1982 | p_start_pos = get_partition_start_from_dev_start(pe); |
1983 | |
1984 | if (last_p_start_pos > p_start_pos) { |
1985 | if (prev) |
1986 | *prev = last_i; |
1987 | return i; |
1988 | } |
1989 | |
1990 | last_p_start_pos = p_start_pos; |
1991 | last_i = i; |
1992 | } |
1993 | } |
1994 | return 0; |
1995 | } |
1996 | |
1997 | #if ENABLE_FEATURE_FDISK_ADVANCED |
1998 | /* |
1999 | * Fix the chain of logicals. |
2000 | * extended_offset is unchanged, the set of sectors used is unchanged |
2001 | * The chain is sorted so that sectors increase, and so that |
2002 | * starting sectors increase. |
2003 | * |
2004 | * After this it may still be that cfdisk doesnt like the table. |
2005 | * (This is because cfdisk considers expanded parts, from link to |
2006 | * end of partition, and these may still overlap.) |
2007 | * Now |
2008 | * sfdisk /dev/hda > ohda; sfdisk /dev/hda < ohda |
2009 | * may help. |
2010 | */ |
2011 | static void |
2012 | fix_chain_of_logicals(void) |
2013 | { |
2014 | int j, oj, ojj, sj, sjj; |
2015 | struct partition *pj,*pjj,tmp; |
2016 | |
2017 | /* Stage 1: sort sectors but leave sector of part 4 */ |
2018 | /* (Its sector is the global extended_offset.) */ |
2019 | stage1: |
2020 | for (j = 5; j < g_partitions - 1; j++) { |
2021 | oj = ptes[j].offset_from_dev_start; |
2022 | ojj = ptes[j+1].offset_from_dev_start; |
2023 | if (oj > ojj) { |
2024 | ptes[j].offset_from_dev_start = ojj; |
2025 | ptes[j+1].offset_from_dev_start = oj; |
2026 | pj = ptes[j].part_table; |
2027 | set_start_sect(pj, get_start_sect(pj)+oj-ojj); |
2028 | pjj = ptes[j+1].part_table; |
2029 | set_start_sect(pjj, get_start_sect(pjj)+ojj-oj); |
2030 | set_start_sect(ptes[j-1].ext_pointer, |
2031 | ojj-extended_offset); |
2032 | set_start_sect(ptes[j].ext_pointer, |
2033 | oj-extended_offset); |
2034 | goto stage1; |
2035 | } |
2036 | } |
2037 | |
2038 | /* Stage 2: sort starting sectors */ |
2039 | stage2: |
2040 | for (j = 4; j < g_partitions - 1; j++) { |
2041 | pj = ptes[j].part_table; |
2042 | pjj = ptes[j+1].part_table; |
2043 | sj = get_start_sect(pj); |
2044 | sjj = get_start_sect(pjj); |
2045 | oj = ptes[j].offset_from_dev_start; |
2046 | ojj = ptes[j+1].offset_from_dev_start; |
2047 | if (oj+sj > ojj+sjj) { |
2048 | tmp = *pj; |
2049 | *pj = *pjj; |
2050 | *pjj = tmp; |
2051 | set_start_sect(pj, ojj+sjj-oj); |
2052 | set_start_sect(pjj, oj+sj-ojj); |
2053 | goto stage2; |
2054 | } |
2055 | } |
2056 | |
2057 | /* Probably something was changed */ |
2058 | for (j = 4; j < g_partitions; j++) |
2059 | ptes[j].changed = 1; |
2060 | } |
2061 | |
2062 | |
2063 | static void |
2064 | fix_partition_table_order(void) |
2065 | { |
2066 | struct pte *pei, *pek; |
2067 | int i,k; |
2068 | |
2069 | if (!wrong_p_order(NULL)) { |
2070 | printf("Ordering is already correct\n\n"); |
2071 | return; |
2072 | } |
2073 | |
2074 | while ((i = wrong_p_order(&k)) != 0 && i < 4) { |
2075 | /* partition i should have come earlier, move it */ |
2076 | /* We have to move data in the MBR */ |
2077 | struct partition *pi, *pk, *pe, pbuf; |
2078 | pei = &ptes[i]; |
2079 | pek = &ptes[k]; |
2080 | |
2081 | pe = pei->ext_pointer; |
2082 | pei->ext_pointer = pek->ext_pointer; |
2083 | pek->ext_pointer = pe; |
2084 | |
2085 | pi = pei->part_table; |
2086 | pk = pek->part_table; |
2087 | |
2088 | memmove(&pbuf, pi, sizeof(struct partition)); |
2089 | memmove(pi, pk, sizeof(struct partition)); |
2090 | memmove(pk, &pbuf, sizeof(struct partition)); |
2091 | |
2092 | pei->changed = pek->changed = 1; |
2093 | } |
2094 | |
2095 | if (i) |
2096 | fix_chain_of_logicals(); |
2097 | |
2098 | printf("Done.\n"); |
2099 | } |
2100 | #endif |
2101 | |
2102 | static void |
2103 | list_table(int xtra) |
2104 | { |
2105 | const struct partition *p; |
2106 | int i, w; |
2107 | |
2108 | if (LABEL_IS_SUN) { |
2109 | sun_list_table(xtra); |
2110 | return; |
2111 | } |
2112 | if (LABEL_IS_SGI) { |
2113 | sgi_list_table(xtra); |
2114 | return; |
2115 | } |
2116 | if (LABEL_IS_GPT) { |
2117 | gpt_list_table(xtra); |
2118 | return; |
2119 | } |
2120 | |
2121 | list_disk_geometry(); |
2122 | |
2123 | if (LABEL_IS_OSF) { |
2124 | xbsd_print_disklabel(xtra); |
2125 | return; |
2126 | } |
2127 | |
2128 | /* Heuristic: we list partition 3 of /dev/foo as /dev/foo3, |
2129 | but if the device name ends in a digit, say /dev/foo1, |
2130 | then the partition is called /dev/foo1p3. */ |
2131 | w = strlen(disk_device); |
2132 | if (w && isdigit(disk_device[w-1])) |
2133 | w++; |
2134 | if (w < 5) |
2135 | w = 5; |
2136 | |
2137 | // 1 12345678901 12345678901 12345678901 12 |
2138 | printf("%*s Boot Start End Blocks Id System\n", |
2139 | w+1, "Device"); |
2140 | |
2141 | for (i = 0; i < g_partitions; i++) { |
2142 | const struct pte *pe = &ptes[i]; |
2143 | sector_t psects; |
2144 | sector_t pblocks; |
2145 | unsigned podd; |
2146 | |
2147 | p = pe->part_table; |
2148 | if (!p || is_cleared_partition(p)) |
2149 | continue; |
2150 | |
2151 | psects = get_nr_sects(p); |
2152 | pblocks = psects; |
2153 | podd = 0; |
2154 | |
2155 | if (sector_size < 1024) { |
2156 | pblocks /= (1024 / sector_size); |
2157 | podd = psects % (1024 / sector_size); |
2158 | } |
2159 | if (sector_size > 1024) |
2160 | pblocks *= (sector_size / 1024); |
2161 | |
2162 | printf("%s %c %11"SECT_FMT"u %11"SECT_FMT"u %11"SECT_FMT"u%c %2x %s\n", |
2163 | partname(disk_device, i+1, w+2), |
2164 | !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */ |
2165 | ? '*' : '?', |
2166 | cround(get_partition_start_from_dev_start(pe)), /* start */ |
2167 | cround(get_partition_start_from_dev_start(pe) + psects /* end */ |
2168 | - (psects ? 1 : 0)), |
2169 | pblocks, podd ? '+' : ' ', /* odd flag on end */ |
2170 | p->sys_ind, /* type id */ |
2171 | partition_type(p->sys_ind)); /* type name */ |
2172 | |
2173 | check_consistency(p, i); |
2174 | } |
2175 | |
2176 | /* Is partition table in disk order? It need not be, but... */ |
2177 | /* partition table entries are not checked for correct order |
2178 | * if this is a sgi, sun or aix labeled disk... */ |
2179 | if (LABEL_IS_DOS && wrong_p_order(NULL)) { |
2180 | /* FIXME */ |
2181 | printf("\nPartition table entries are not in disk order\n"); |
2182 | } |
2183 | } |
2184 | |
2185 | #if ENABLE_FEATURE_FDISK_ADVANCED |
2186 | static void |
2187 | x_list_table(int extend) |
2188 | { |
2189 | const struct pte *pe; |
2190 | const struct partition *p; |
2191 | int i; |
2192 | |
2193 | printf("\nDisk %s: %u heads, %u sectors, %u cylinders\n\n", |
2194 | disk_device, g_heads, g_sectors, g_cylinders); |
2195 | printf("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n"); |
2196 | for (i = 0; i < g_partitions; i++) { |
2197 | pe = &ptes[i]; |
2198 | p = (extend ? pe->ext_pointer : pe->part_table); |
2199 | if (p != NULL) { |
2200 | printf("%2u %02x%4u%4u%5u%4u%4u%5u%11"SECT_FMT"u%11"SECT_FMT"u %02x\n", |
2201 | i + 1, p->boot_ind, p->head, |
2202 | sector(p->sector), |
2203 | cylinder(p->sector, p->cyl), p->end_head, |
2204 | sector(p->end_sector), |
2205 | cylinder(p->end_sector, p->end_cyl), |
2206 | get_start_sect(p), get_nr_sects(p), |
2207 | p->sys_ind); |
2208 | if (p->sys_ind) |
2209 | check_consistency(p, i); |
2210 | } |
2211 | } |
2212 | } |
2213 | #endif |
2214 | |
2215 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2216 | static void |
2217 | fill_bounds(sector_t *first, sector_t *last) |
2218 | { |
2219 | int i; |
2220 | const struct pte *pe = &ptes[0]; |
2221 | const struct partition *p; |
2222 | |
2223 | for (i = 0; i < g_partitions; pe++,i++) { |
2224 | p = pe->part_table; |
2225 | if (!p->sys_ind || IS_EXTENDED(p->sys_ind)) { |
2226 | first[i] = 0xffffffff; |
2227 | last[i] = 0; |
2228 | } else { |
2229 | first[i] = get_partition_start_from_dev_start(pe); |
2230 | last[i] = first[i] + get_nr_sects(p) - 1; |
2231 | } |
2232 | } |
2233 | } |
2234 | |
2235 | static void |
2236 | check(int n, unsigned h, unsigned s, unsigned c, sector_t start) |
2237 | { |
2238 | sector_t total, real_s, real_c; |
2239 | |
2240 | real_s = sector(s) - 1; |
2241 | real_c = cylinder(s, c); |
2242 | total = (real_c * g_sectors + real_s) * g_heads + h; |
2243 | if (!total) |
2244 | printf("Partition %u contains sector 0\n", n); |
2245 | if (h >= g_heads) |
2246 | printf("Partition %u: head %u greater than maximum %u\n", |
2247 | n, h + 1, g_heads); |
2248 | if (real_s >= g_sectors) |
2249 | printf("Partition %u: sector %u greater than " |
2250 | "maximum %u\n", n, s, g_sectors); |
2251 | if (real_c >= g_cylinders) |
2252 | printf("Partition %u: cylinder %"SECT_FMT"u greater than " |
2253 | "maximum %u\n", n, real_c + 1, g_cylinders); |
2254 | if (g_cylinders <= 1024 && start != total) |
2255 | printf("Partition %u: previous sectors %"SECT_FMT"u disagrees with " |
2256 | "total %"SECT_FMT"u\n", n, start, total); |
2257 | } |
2258 | |
2259 | static void |
2260 | verify(void) |
2261 | { |
2262 | int i, j; |
2263 | sector_t total = 1; |
2264 | sector_t first[g_partitions], last[g_partitions]; |
2265 | struct partition *p; |
2266 | |
2267 | if (warn_geometry()) |
2268 | return; |
2269 | |
2270 | if (LABEL_IS_SUN) { |
2271 | verify_sun(); |
2272 | return; |
2273 | } |
2274 | if (LABEL_IS_SGI) { |
2275 | verify_sgi(1); |
2276 | return; |
2277 | } |
2278 | |
2279 | fill_bounds(first, last); |
2280 | for (i = 0; i < g_partitions; i++) { |
2281 | struct pte *pe = &ptes[i]; |
2282 | |
2283 | p = pe->part_table; |
2284 | if (p->sys_ind && !IS_EXTENDED(p->sys_ind)) { |
2285 | check_consistency(p, i); |
2286 | if (get_partition_start_from_dev_start(pe) < first[i]) |
2287 | printf("Warning: bad start-of-data in " |
2288 | "partition %u\n", i + 1); |
2289 | check(i + 1, p->end_head, p->end_sector, p->end_cyl, |
2290 | last[i]); |
2291 | total += last[i] + 1 - first[i]; |
2292 | for (j = 0; j < i; j++) { |
2293 | if ((first[i] >= first[j] && first[i] <= last[j]) |
2294 | || ((last[i] <= last[j] && last[i] >= first[j]))) { |
2295 | printf("Warning: partition %u overlaps " |
2296 | "partition %u\n", j + 1, i + 1); |
2297 | total += first[i] >= first[j] ? |
2298 | first[i] : first[j]; |
2299 | total -= last[i] <= last[j] ? |
2300 | last[i] : last[j]; |
2301 | } |
2302 | } |
2303 | } |
2304 | } |
2305 | |
2306 | if (extended_offset) { |
2307 | struct pte *pex = &ptes[ext_index]; |
2308 | sector_t e_last = get_start_sect(pex->part_table) + |
2309 | get_nr_sects(pex->part_table) - 1; |
2310 | |
2311 | for (i = 4; i < g_partitions; i++) { |
2312 | total++; |
2313 | p = ptes[i].part_table; |
2314 | if (!p->sys_ind) { |
2315 | if (i != 4 || i + 1 < g_partitions) |
2316 | printf("Warning: partition %u " |
2317 | "is empty\n", i + 1); |
2318 | } else if (first[i] < extended_offset || last[i] > e_last) { |
2319 | printf("Logical partition %u not entirely in " |
2320 | "partition %u\n", i + 1, ext_index + 1); |
2321 | } |
2322 | } |
2323 | } |
2324 | |
2325 | if (total > g_heads * g_sectors * g_cylinders) |
2326 | printf("Total allocated sectors %u greater than the maximum " |
2327 | "%u\n", total, g_heads * g_sectors * g_cylinders); |
2328 | else { |
2329 | total = g_heads * g_sectors * g_cylinders - total; |
2330 | if (total != 0) |
2331 | printf("%"SECT_FMT"u unallocated sectors\n", total); |
2332 | } |
2333 | } |
2334 | |
2335 | static void |
2336 | add_partition(int n, int sys) |
2337 | { |
2338 | char mesg[256]; /* 48 does not suffice in Japanese */ |
2339 | int i, num_read = 0; |
2340 | struct partition *p = ptes[n].part_table; |
2341 | struct partition *q = ptes[ext_index].part_table; |
2342 | sector_t limit, temp; |
2343 | sector_t start, stop = 0; |
2344 | sector_t first[g_partitions], last[g_partitions]; |
2345 | |
2346 | if (p && p->sys_ind) { |
2347 | printf(msg_part_already_defined, n + 1); |
2348 | return; |
2349 | } |
2350 | fill_bounds(first, last); |
2351 | if (n < 4) { |
2352 | start = sector_offset; |
2353 | if (display_in_cyl_units || !total_number_of_sectors) |
2354 | limit = (sector_t) g_heads * g_sectors * g_cylinders - 1; |
2355 | else |
2356 | limit = total_number_of_sectors - 1; |
2357 | if (extended_offset) { |
2358 | first[ext_index] = extended_offset; |
2359 | last[ext_index] = get_start_sect(q) + |
2360 | get_nr_sects(q) - 1; |
2361 | } |
2362 | } else { |
2363 | start = extended_offset + sector_offset; |
2364 | limit = get_start_sect(q) + get_nr_sects(q) - 1; |
2365 | } |
2366 | if (display_in_cyl_units) |
2367 | for (i = 0; i < g_partitions; i++) |
2368 | first[i] = (cround(first[i]) - 1) * units_per_sector; |
2369 | |
2370 | snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR)); |
2371 | do { |
2372 | temp = start; |
2373 | for (i = 0; i < g_partitions; i++) { |
2374 | sector_t lastplusoff; |
2375 | |
2376 | if (start == ptes[i].offset_from_dev_start) |
2377 | start += sector_offset; |
2378 | lastplusoff = last[i] + ((n < 4) ? 0 : sector_offset); |
2379 | if (start >= first[i] && start <= lastplusoff) |
2380 | start = lastplusoff + 1; |
2381 | } |
2382 | if (start > limit) |
2383 | break; |
2384 | if (start >= temp+units_per_sector && num_read) { |
2385 | printf("Sector %"SECT_FMT"u is already allocated\n", temp); |
2386 | temp = start; |
2387 | num_read = 0; |
2388 | } |
2389 | if (!num_read && start == temp) { |
2390 | sector_t saved_start; |
2391 | |
2392 | saved_start = start; |
2393 | start = read_int(cround(saved_start), cround(saved_start), cround(limit), 0, mesg); |
2394 | if (display_in_cyl_units) { |
2395 | start = (start - 1) * units_per_sector; |
2396 | if (start < saved_start) |
2397 | start = saved_start; |
2398 | } |
2399 | num_read = 1; |
2400 | } |
2401 | } while (start != temp || !num_read); |
2402 | if (n > 4) { /* NOT for fifth partition */ |
2403 | struct pte *pe = &ptes[n]; |
2404 | |
2405 | pe->offset_from_dev_start = start - sector_offset; |
2406 | if (pe->offset_from_dev_start == extended_offset) { /* must be corrected */ |
2407 | pe->offset_from_dev_start++; |
2408 | if (sector_offset == 1) |
2409 | start++; |
2410 | } |
2411 | } |
2412 | |
2413 | for (i = 0; i < g_partitions; i++) { |
2414 | struct pte *pe = &ptes[i]; |
2415 | |
2416 | if (start < pe->offset_from_dev_start && limit >= pe->offset_from_dev_start) |
2417 | limit = pe->offset_from_dev_start - 1; |
2418 | if (start < first[i] && limit >= first[i]) |
2419 | limit = first[i] - 1; |
2420 | } |
2421 | if (start > limit) { |
2422 | printf("No free sectors available\n"); |
2423 | if (n > 4) |
2424 | g_partitions--; |
2425 | return; |
2426 | } |
2427 | if (cround(start) == cround(limit)) { |
2428 | stop = limit; |
2429 | } else { |
2430 | snprintf(mesg, sizeof(mesg), |
2431 | "Last %s or +size or +sizeM or +sizeK", |
2432 | str_units(SINGULAR)); |
2433 | stop = read_int(cround(start), cround(limit), cround(limit), cround(start), mesg); |
2434 | if (display_in_cyl_units) { |
2435 | stop = stop * units_per_sector - 1; |
2436 | if (stop >limit) |
2437 | stop = limit; |
2438 | } |
2439 | } |
2440 | |
2441 | set_partition(n, 0, start, stop, sys); |
2442 | if (n > 4) |
2443 | set_partition(n - 1, 1, ptes[n].offset_from_dev_start, stop, EXTENDED); |
2444 | |
2445 | if (IS_EXTENDED(sys)) { |
2446 | struct pte *pe4 = &ptes[4]; |
2447 | struct pte *pen = &ptes[n]; |
2448 | |
2449 | ext_index = n; |
2450 | pen->ext_pointer = p; |
2451 | pe4->offset_from_dev_start = extended_offset = start; |
2452 | pe4->sectorbuffer = xzalloc(sector_size); |
2453 | pe4->part_table = pt_offset(pe4->sectorbuffer, 0); |
2454 | pe4->ext_pointer = pe4->part_table + 1; |
2455 | pe4->changed = 1; |
2456 | g_partitions = 5; |
2457 | } |
2458 | } |
2459 | |
2460 | static void |
2461 | add_logical(void) |
2462 | { |
2463 | if (g_partitions > 5 || ptes[4].part_table->sys_ind) { |
2464 | struct pte *pe = &ptes[g_partitions]; |
2465 | |
2466 | pe->sectorbuffer = xzalloc(sector_size); |
2467 | pe->part_table = pt_offset(pe->sectorbuffer, 0); |
2468 | pe->ext_pointer = pe->part_table + 1; |
2469 | pe->offset_from_dev_start = 0; |
2470 | pe->changed = 1; |
2471 | g_partitions++; |
2472 | } |
2473 | add_partition(g_partitions - 1, LINUX_NATIVE); |
2474 | } |
2475 | |
2476 | static void |
2477 | new_partition(void) |
2478 | { |
2479 | int i, free_primary = 0; |
2480 | |
2481 | if (warn_geometry()) |
2482 | return; |
2483 | |
2484 | if (LABEL_IS_SUN) { |
2485 | add_sun_partition(get_partition(0, g_partitions), LINUX_NATIVE); |
2486 | return; |
2487 | } |
2488 | if (LABEL_IS_SGI) { |
2489 | sgi_add_partition(get_partition(0, g_partitions), LINUX_NATIVE); |
2490 | return; |
2491 | } |
2492 | if (LABEL_IS_AIX) { |
2493 | printf("Sorry - this fdisk cannot handle AIX disk labels.\n" |
2494 | "If you want to add DOS-type partitions, create a new empty DOS partition\n" |
2495 | "table first (use 'o'). This will destroy the present disk contents.\n"); |
2496 | return; |
2497 | } |
2498 | |
2499 | for (i = 0; i < 4; i++) |
2500 | free_primary += !ptes[i].part_table->sys_ind; |
2501 | |
2502 | if (!free_primary && g_partitions >= MAXIMUM_PARTS) { |
2503 | printf("The maximum number of partitions has been created\n"); |
2504 | return; |
2505 | } |
2506 | |
2507 | if (!free_primary) { |
2508 | if (extended_offset) |
2509 | add_logical(); |
2510 | else |
2511 | printf("You must delete some partition and add " |
2512 | "an extended partition first\n"); |
2513 | } else { |
2514 | char c, line[80]; |
2515 | snprintf(line, sizeof(line), |
2516 | "Command action\n" |
2517 | " %s\n" |
2518 | " p primary partition (1-4)\n", |
2519 | (extended_offset ? |
2520 | "l logical (5 or over)" : "e extended")); |
2521 | while (1) { |
2522 | c = read_nonempty(line); |
2523 | if ((c | 0x20) == 'p') { |
2524 | i = get_nonexisting_partition(0, 4); |
2525 | if (i >= 0) |
2526 | add_partition(i, LINUX_NATIVE); |
2527 | return; |
2528 | } |
2529 | if (c == 'l' && extended_offset) { |
2530 | add_logical(); |
2531 | return; |
2532 | } |
2533 | if (c == 'e' && !extended_offset) { |
2534 | i = get_nonexisting_partition(0, 4); |
2535 | if (i >= 0) |
2536 | add_partition(i, EXTENDED); |
2537 | return; |
2538 | } |
2539 | printf("Invalid partition number " |
2540 | "for type '%c'\n", c); |
2541 | } |
2542 | } |
2543 | } |
2544 | |
2545 | static void |
2546 | reread_partition_table(int leave) |
2547 | { |
2548 | int i; |
2549 | |
2550 | printf("Calling ioctl() to re-read partition table\n"); |
2551 | sync(); |
2552 | /* Users with slow external USB disks on a 320MHz ARM system (year 2011) |
2553 | * report that sleep is needed, otherwise BLKRRPART may fail with -EIO: |
2554 | */ |
2555 | sleep(1); |
2556 | i = ioctl_or_perror(dev_fd, BLKRRPART, NULL, |
2557 | "WARNING: rereading partition table " |
2558 | "failed, kernel still uses old table"); |
2559 | #if 0 |
2560 | if (dos_changed) |
2561 | printf( |
2562 | "\nWARNING: If you have created or modified any DOS 6.x\n" |
2563 | "partitions, please see the fdisk manual page for additional\n" |
2564 | "information\n"); |
2565 | #endif |
2566 | |
2567 | if (leave) { |
2568 | if (ENABLE_FEATURE_CLEAN_UP) |
2569 | close_dev_fd(); |
2570 | exit(i != 0); |
2571 | } |
2572 | } |
2573 | |
2574 | static void |
2575 | write_table(void) |
2576 | { |
2577 | int i; |
2578 | |
2579 | if (LABEL_IS_DOS) { |
2580 | for (i = 0; i < 3; i++) |
2581 | if (ptes[i].changed) |
2582 | ptes[3].changed = 1; |
2583 | for (i = 3; i < g_partitions; i++) { |
2584 | struct pte *pe = &ptes[i]; |
2585 | if (pe->changed) { |
2586 | write_part_table_flag(pe->sectorbuffer); |
2587 | write_sector(pe->offset_from_dev_start, pe->sectorbuffer); |
2588 | } |
2589 | } |
2590 | } |
2591 | else if (LABEL_IS_SGI) { |
2592 | /* no test on change? the printf below might be mistaken */ |
2593 | sgi_write_table(); |
2594 | } |
2595 | else if (LABEL_IS_SUN) { |
2596 | for (i = 0; i < 8; i++) { |
2597 | if (ptes[i].changed) { |
2598 | sun_write_table(); |
2599 | break; |
2600 | } |
2601 | } |
2602 | } |
2603 | |
2604 | printf("The partition table has been altered.\n"); |
2605 | reread_partition_table(1); |
2606 | } |
2607 | #endif /* FEATURE_FDISK_WRITABLE */ |
2608 | |
2609 | #if ENABLE_FEATURE_FDISK_ADVANCED |
2610 | #define MAX_PER_LINE 16 |
2611 | static void |
2612 | print_buffer(char *pbuffer) |
2613 | { |
2614 | unsigned i; |
2615 | int l; |
2616 | |
2617 | for (i = 0, l = 0; i < sector_size; i++, l++) { |
2618 | if (l == 0) |
2619 | printf("0x%03X:", i); |
2620 | printf(" %02X", (unsigned char) pbuffer[i]); |
2621 | if (l == MAX_PER_LINE - 1) { |
2622 | bb_putchar('\n'); |
2623 | l = -1; |
2624 | } |
2625 | } |
2626 | if (l > 0) |
2627 | bb_putchar('\n'); |
2628 | bb_putchar('\n'); |
2629 | } |
2630 | |
2631 | static void |
2632 | print_raw(void) |
2633 | { |
2634 | int i; |
2635 | |
2636 | printf("Device: %s\n", disk_device); |
2637 | if (LABEL_IS_SGI || LABEL_IS_SUN) |
2638 | print_buffer(MBRbuffer); |
2639 | else { |
2640 | for (i = 3; i < g_partitions; i++) |
2641 | print_buffer(ptes[i].sectorbuffer); |
2642 | } |
2643 | } |
2644 | |
2645 | static void |
2646 | move_begin(unsigned i) |
2647 | { |
2648 | struct pte *pe = &ptes[i]; |
2649 | struct partition *p = pe->part_table; |
2650 | sector_t new, first, nr_sects; |
2651 | |
2652 | if (warn_geometry()) |
2653 | return; |
2654 | nr_sects = get_nr_sects(p); |
2655 | if (!p->sys_ind || !nr_sects || IS_EXTENDED(p->sys_ind)) { |
2656 | printf("Partition %u has no data area\n", i + 1); |
2657 | return; |
2658 | } |
2659 | first = get_partition_start_from_dev_start(pe); /* == pe->offset_from_dev_start + get_start_sect(p) */ |
2660 | new = read_int(0 /*was:first*/, first, first + nr_sects - 1, first, "New beginning of data"); |
2661 | if (new != first) { |
2662 | sector_t new_relative = new - pe->offset_from_dev_start; |
2663 | nr_sects += (get_start_sect(p) - new_relative); |
2664 | set_start_sect(p, new_relative); |
2665 | set_nr_sects(p, nr_sects); |
2666 | read_nonempty("Recalculate C/H/S values? (Y/N): "); |
2667 | if ((line_ptr[0] | 0x20) == 'y') |
2668 | set_hsc_start_end(p, new, new + nr_sects - 1); |
2669 | pe->changed = 1; |
2670 | } |
2671 | } |
2672 | |
2673 | static void |
2674 | xselect(void) |
2675 | { |
2676 | char c; |
2677 | |
2678 | while (1) { |
2679 | bb_putchar('\n'); |
2680 | c = 0x20 | read_nonempty("Expert command (m for help): "); |
2681 | switch (c) { |
2682 | case 'a': |
2683 | if (LABEL_IS_SUN) |
2684 | sun_set_alt_cyl(); |
2685 | break; |
2686 | case 'b': |
2687 | if (LABEL_IS_DOS) |
2688 | move_begin(get_partition(0, g_partitions)); |
2689 | break; |
2690 | case 'c': |
2691 | user_cylinders = g_cylinders = |
2692 | read_int(1, g_cylinders, 1048576, 0, |
2693 | "Number of cylinders"); |
2694 | if (LABEL_IS_SUN) |
2695 | sun_set_ncyl(g_cylinders); |
2696 | if (LABEL_IS_DOS) |
2697 | warn_cylinders(); |
2698 | break; |
2699 | case 'd': |
2700 | print_raw(); |
2701 | break; |
2702 | case 'e': |
2703 | if (LABEL_IS_SGI) |
2704 | sgi_set_xcyl(); |
2705 | else if (LABEL_IS_SUN) |
2706 | sun_set_xcyl(); |
2707 | else if (LABEL_IS_DOS) |
2708 | x_list_table(1); |
2709 | break; |
2710 | case 'f': |
2711 | if (LABEL_IS_DOS) |
2712 | fix_partition_table_order(); |
2713 | break; |
2714 | case 'g': |
2715 | #if ENABLE_FEATURE_SGI_LABEL |
2716 | create_sgilabel(); |
2717 | #endif |
2718 | break; |
2719 | case 'h': |
2720 | user_heads = g_heads = read_int(1, g_heads, 256, 0, "Number of heads"); |
2721 | update_units(); |
2722 | break; |
2723 | case 'i': |
2724 | if (LABEL_IS_SUN) |
2725 | sun_set_ilfact(); |
2726 | break; |
2727 | case 'o': |
2728 | if (LABEL_IS_SUN) |
2729 | sun_set_rspeed(); |
2730 | break; |
2731 | case 'p': |
2732 | if (LABEL_IS_SUN) |
2733 | list_table(1); |
2734 | else |
2735 | x_list_table(0); |
2736 | break; |
2737 | case 'q': |
2738 | if (ENABLE_FEATURE_CLEAN_UP) |
2739 | close_dev_fd(); |
2740 | bb_putchar('\n'); |
2741 | exit(EXIT_SUCCESS); |
2742 | case 'r': |
2743 | return; |
2744 | case 's': |
2745 | user_sectors = g_sectors = read_int(1, g_sectors, 63, 0, "Number of sectors"); |
2746 | if (dos_compatible_flag) { |
2747 | sector_offset = g_sectors; |
2748 | printf("Warning: setting sector offset for DOS " |
2749 | "compatiblity\n"); |
2750 | } |
2751 | update_units(); |
2752 | break; |
2753 | case 'v': |
2754 | verify(); |
2755 | break; |
2756 | case 'w': |
2757 | write_table(); /* does not return */ |
2758 | break; |
2759 | case 'y': |
2760 | if (LABEL_IS_SUN) |
2761 | sun_set_pcylcount(); |
2762 | break; |
2763 | default: |
2764 | xmenu(); |
2765 | } |
2766 | } |
2767 | } |
2768 | #endif /* ADVANCED mode */ |
2769 | |
2770 | static int |
2771 | is_ide_cdrom_or_tape(const char *device) |
2772 | { |
2773 | FILE *procf; |
2774 | char buf[100]; |
2775 | struct stat statbuf; |
2776 | int is_ide = 0; |
2777 | |
2778 | /* No device was given explicitly, and we are trying some |
2779 | likely things. But opening /dev/hdc may produce errors like |
2780 | "hdc: tray open or drive not ready" |
2781 | if it happens to be a CD-ROM drive. It even happens that |
2782 | the process hangs on the attempt to read a music CD. |
2783 | So try to be careful. This only works since 2.1.73. */ |
2784 | |
2785 | if (strncmp("/dev/hd", device, 7)) |
2786 | return 0; |
2787 | |
2788 | snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5); |
2789 | procf = fopen_for_read(buf); |
2790 | if (procf != NULL && fgets(buf, sizeof(buf), procf)) |
2791 | is_ide = (!strncmp(buf, "cdrom", 5) || |
2792 | !strncmp(buf, "tape", 4)); |
2793 | else |
2794 | /* Now when this proc file does not exist, skip the |
2795 | device when it is read-only. */ |
2796 | if (stat(device, &statbuf) == 0) |
2797 | is_ide = ((statbuf.st_mode & 0222) == 0); |
2798 | |
2799 | if (procf) |
2800 | fclose(procf); |
2801 | return is_ide; |
2802 | } |
2803 | |
2804 | |
2805 | static void |
2806 | open_list_and_close(const char *device, int user_specified) |
2807 | { |
2808 | int gb; |
2809 | |
2810 | disk_device = device; |
2811 | if (setjmp(listingbuf)) |
2812 | return; |
2813 | if (!user_specified) |
2814 | if (is_ide_cdrom_or_tape(device)) |
2815 | return; |
2816 | |
2817 | /* Open disk_device, save file descriptor to dev_fd */ |
2818 | errno = 0; |
2819 | gb = get_boot(TRY_ONLY); |
2820 | if (gb > 0) { /* I/O error */ |
2821 | /* Ignore other errors, since we try IDE |
2822 | and SCSI hard disks which may not be |
2823 | installed on the system. */ |
2824 | if (user_specified || errno == EACCES) |
2825 | bb_perror_msg("can't open '%s'", device); |
2826 | return; |
2827 | } |
2828 | |
2829 | if (gb < 0) { /* no DOS signature */ |
2830 | list_disk_geometry(); |
2831 | if (LABEL_IS_AIX) |
2832 | goto ret; |
2833 | #if ENABLE_FEATURE_OSF_LABEL |
2834 | if (bsd_trydev(device) < 0) |
2835 | #endif |
2836 | printf("Disk %s doesn't contain a valid " |
2837 | "partition table\n", device); |
2838 | } else { |
2839 | list_table(0); |
2840 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2841 | if (!LABEL_IS_SUN && g_partitions > 4) { |
2842 | delete_partition(ext_index); |
2843 | } |
2844 | #endif |
2845 | } |
2846 | ret: |
2847 | close_dev_fd(); |
2848 | } |
2849 | |
2850 | /* Is it a whole disk? The digit check is still useful |
2851 | for Xen devices for example. */ |
2852 | static int is_whole_disk(const char *disk) |
2853 | { |
2854 | unsigned len; |
2855 | int fd = open(disk, O_RDONLY); |
2856 | |
2857 | if (fd != -1) { |
2858 | struct hd_geometry geometry; |
2859 | int err = ioctl(fd, HDIO_GETGEO, &geometry); |
2860 | close(fd); |
2861 | if (!err) |
2862 | return (geometry.start == 0); |
2863 | } |
2864 | |
2865 | /* Treat "nameN" as a partition name, not whole disk */ |
2866 | /* note: mmcblk0 should work from the geometry check above */ |
2867 | len = strlen(disk); |
2868 | if (len != 0 && isdigit(disk[len - 1])) |
2869 | return 0; |
2870 | |
2871 | return 1; |
2872 | } |
2873 | |
2874 | /* for fdisk -l: try all things in /proc/partitions |
2875 | that look like a partition name (do not end in a digit) */ |
2876 | static void |
2877 | list_devs_in_proc_partititons(void) |
2878 | { |
2879 | FILE *procpt; |
2880 | char line[100], ptname[100], devname[120]; |
2881 | int ma, mi, sz; |
2882 | |
2883 | procpt = fopen_or_warn("/proc/partitions", "r"); |
2884 | |
2885 | while (fgets(line, sizeof(line), procpt)) { |
2886 | if (sscanf(line, " %u %u %u %[^\n ]", |
2887 | &ma, &mi, &sz, ptname) != 4) |
2888 | continue; |
2889 | |
2890 | sprintf(devname, "/dev/%s", ptname); |
2891 | if (is_whole_disk(devname)) |
2892 | open_list_and_close(devname, 0); |
2893 | } |
2894 | #if ENABLE_FEATURE_CLEAN_UP |
2895 | fclose(procpt); |
2896 | #endif |
2897 | } |
2898 | |
2899 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2900 | static void |
2901 | unknown_command(int c) |
2902 | { |
2903 | printf("%c: unknown command\n", c); |
2904 | } |
2905 | #endif |
2906 | |
2907 | int fdisk_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
2908 | int fdisk_main(int argc UNUSED_PARAM, char **argv) |
2909 | { |
2910 | unsigned opt; |
2911 | /* |
2912 | * fdisk -v |
2913 | * fdisk -l [-b sectorsize] [-u] device ... |
2914 | * fdisk -s [partition] ... |
2915 | * fdisk [-b sectorsize] [-u] device |
2916 | * |
2917 | * Options -C, -H, -S set the geometry. |
2918 | */ |
2919 | INIT_G(); |
2920 | |
2921 | close_dev_fd(); /* needed: fd 3 must not stay closed */ |
2922 | |
2923 | opt_complementary = "b+:C+:H+:S+"; /* numeric params */ |
2924 | opt = getopt32(argv, "b:C:H:lS:u" IF_FEATURE_FDISK_BLKSIZE("s"), |
2925 | §or_size, &user_cylinders, &user_heads, &user_sectors); |
2926 | argv += optind; |
2927 | if (opt & OPT_b) { |
2928 | /* Ugly: this sector size is really per device, |
2929 | * so cannot be combined with multiple disks, |
2930 | * and the same goes for the C/H/S options. |
2931 | */ |
2932 | if (sector_size < 512 |
2933 | || sector_size > 0x10000 |
2934 | || (sector_size & (sector_size-1)) /* not power of 2 */ |
2935 | ) { |
2936 | bb_show_usage(); |
2937 | } |
2938 | sector_offset = 2; |
2939 | user_set_sector_size = 1; |
2940 | } |
2941 | if (user_heads <= 0 || user_heads >= 256) |
2942 | user_heads = 0; |
2943 | if (user_sectors <= 0 || user_sectors >= 64) |
2944 | user_sectors = 0; |
2945 | if (opt & OPT_u) |
2946 | display_in_cyl_units = 0; // -u |
2947 | |
2948 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2949 | if (opt & OPT_l) { |
2950 | nowarn = 1; |
2951 | #endif |
2952 | if (*argv) { |
2953 | listing = 1; |
2954 | do { |
2955 | open_list_and_close(*argv, 1); |
2956 | } while (*++argv); |
2957 | } else { |
2958 | /* we don't have device names, */ |
2959 | /* use /proc/partitions instead */ |
2960 | list_devs_in_proc_partititons(); |
2961 | } |
2962 | return 0; |
2963 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2964 | } |
2965 | #endif |
2966 | |
2967 | #if ENABLE_FEATURE_FDISK_BLKSIZE |
2968 | if (opt & OPT_s) { |
2969 | int j; |
2970 | |
2971 | nowarn = 1; |
2972 | if (!argv[0]) |
2973 | bb_show_usage(); |
2974 | for (j = 0; argv[j]; j++) { |
2975 | unsigned long long size; |
2976 | fd = xopen(argv[j], O_RDONLY); |
2977 | size = bb_BLKGETSIZE_sectors(fd) / 2; |
2978 | close(fd); |
2979 | if (argv[1]) |
2980 | printf("%llu\n", size); |
2981 | else |
2982 | printf("%s: %llu\n", argv[j], size); |
2983 | } |
2984 | return 0; |
2985 | } |
2986 | #endif |
2987 | |
2988 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2989 | if (!argv[0] || argv[1]) |
2990 | bb_show_usage(); |
2991 | |
2992 | disk_device = argv[0]; |
2993 | get_boot(OPEN_MAIN); |
2994 | |
2995 | if (LABEL_IS_OSF) { |
2996 | /* OSF label, and no DOS label */ |
2997 | printf("Detected an OSF/1 disklabel on %s, entering " |
2998 | "disklabel mode\n", disk_device); |
2999 | bsd_select(); |
3000 | /*Why do we do this? It seems to be counter-intuitive*/ |
3001 | current_label_type = LABEL_DOS; |
3002 | /* If we return we may want to make an empty DOS label? */ |
3003 | } |
3004 | |
3005 | while (1) { |
3006 | int c; |
3007 | bb_putchar('\n'); |
3008 | c = 0x20 | read_nonempty("Command (m for help): "); |
3009 | switch (c) { |
3010 | case 'a': |
3011 | if (LABEL_IS_DOS) |
3012 | toggle_active(get_partition(1, g_partitions)); |
3013 | else if (LABEL_IS_SUN) |
3014 | toggle_sunflags(get_partition(1, g_partitions), |
3015 | 0x01); |
3016 | else if (LABEL_IS_SGI) |
3017 | sgi_set_bootpartition( |
3018 | get_partition(1, g_partitions)); |
3019 | else |
3020 | unknown_command(c); |
3021 | break; |
3022 | case 'b': |
3023 | if (LABEL_IS_SGI) { |
3024 | printf("\nThe current boot file is: %s\n", |
3025 | sgi_get_bootfile()); |
3026 | if (read_maybe_empty("Please enter the name of the " |
3027 | "new boot file: ") == '\n') |
3028 | printf("Boot file unchanged\n"); |
3029 | else |
3030 | sgi_set_bootfile(line_ptr); |
3031 | } |
3032 | #if ENABLE_FEATURE_OSF_LABEL |
3033 | else |
3034 | bsd_select(); |
3035 | #endif |
3036 | break; |
3037 | case 'c': |
3038 | if (LABEL_IS_DOS) |
3039 | toggle_dos_compatibility_flag(); |
3040 | else if (LABEL_IS_SUN) |
3041 | toggle_sunflags(get_partition(1, g_partitions), |
3042 | 0x10); |
3043 | else if (LABEL_IS_SGI) |
3044 | sgi_set_swappartition( |
3045 | get_partition(1, g_partitions)); |
3046 | else |
3047 | unknown_command(c); |
3048 | break; |
3049 | case 'd': |
3050 | { |
3051 | int j; |
3052 | /* If sgi_label then don't use get_existing_partition, |
3053 | let the user select a partition, since |
3054 | get_existing_partition() only works for Linux-like |
3055 | partition tables */ |
3056 | if (!LABEL_IS_SGI) { |
3057 | j = get_existing_partition(1, g_partitions); |
3058 | } else { |
3059 | j = get_partition(1, g_partitions); |
3060 | } |
3061 | if (j >= 0) |
3062 | delete_partition(j); |
3063 | } |
3064 | break; |
3065 | case 'i': |
3066 | if (LABEL_IS_SGI) |
3067 | create_sgiinfo(); |
3068 | else |
3069 | unknown_command(c); |
3070 | case 'l': |
3071 | list_types(get_sys_types()); |
3072 | break; |
3073 | case 'm': |
3074 | menu(); |
3075 | break; |
3076 | case 'n': |
3077 | new_partition(); |
3078 | break; |
3079 | case 'o': |
3080 | create_doslabel(); |
3081 | break; |
3082 | case 'p': |
3083 | list_table(0); |
3084 | break; |
3085 | case 'q': |
3086 | if (ENABLE_FEATURE_CLEAN_UP) |
3087 | close_dev_fd(); |
3088 | bb_putchar('\n'); |
3089 | return 0; |
3090 | case 's': |
3091 | #if ENABLE_FEATURE_SUN_LABEL |
3092 | create_sunlabel(); |
3093 | #endif |
3094 | break; |
3095 | case 't': |
3096 | change_sysid(); |
3097 | break; |
3098 | case 'u': |
3099 | change_units(); |
3100 | break; |
3101 | case 'v': |
3102 | verify(); |
3103 | break; |
3104 | case 'w': |
3105 | write_table(); /* does not return */ |
3106 | break; |
3107 | #if ENABLE_FEATURE_FDISK_ADVANCED |
3108 | case 'x': |
3109 | if (LABEL_IS_SGI) { |
3110 | printf("\n\tSorry, no experts menu for SGI " |
3111 | "partition tables available\n\n"); |
3112 | } else |
3113 | xselect(); |
3114 | break; |
3115 | #endif |
3116 | default: |
3117 | unknown_command(c); |
3118 | menu(); |
3119 | } |
3120 | } |
3121 | return 0; |
3122 | #endif /* FEATURE_FDISK_WRITABLE */ |
3123 | } |
3124 |