Contents of /tags/mkinitrd-6_3_0/busybox/util-linux/fdisk.c
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Thu Aug 19 10:14:02 2010 UTC (13 years, 10 months ago) by niro
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Thu Aug 19 10:14:02 2010 UTC (13 years, 10 months ago) by niro
File MIME type: text/plain
File size: 76609 byte(s)
tagged 'mkinitrd-6_3_0'
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 the GPL v2 or later, see the file LICENSE in this tarball. |
8 | */ |
9 | |
10 | #ifndef _LARGEFILE64_SOURCE |
11 | /* For lseek64 */ |
12 | # define _LARGEFILE64_SOURCE |
13 | #endif |
14 | #include <assert.h> /* assert */ |
15 | #include <sys/mount.h> |
16 | #if !defined(BLKSSZGET) |
17 | # define BLKSSZGET _IO(0x12, 104) |
18 | #endif |
19 | #if !defined(BLKGETSIZE64) |
20 | # define BLKGETSIZE64 _IOR(0x12,114,size_t) |
21 | #endif |
22 | #include "libbb.h" |
23 | |
24 | #if BB_LITTLE_ENDIAN |
25 | # define inline_if_little_endian ALWAYS_INLINE |
26 | #else |
27 | # define inline_if_little_endian /* nothing */ |
28 | #endif |
29 | |
30 | |
31 | /* Looks like someone forgot to add this to config system */ |
32 | #ifndef ENABLE_FEATURE_FDISK_BLKSIZE |
33 | # define ENABLE_FEATURE_FDISK_BLKSIZE 0 |
34 | # define IF_FEATURE_FDISK_BLKSIZE(a) |
35 | #endif |
36 | |
37 | #define DEFAULT_SECTOR_SIZE 512 |
38 | #define DEFAULT_SECTOR_SIZE_STR "512" |
39 | #define MAX_SECTOR_SIZE 2048 |
40 | #define SECTOR_SIZE 512 /* still used in osf/sgi/sun code */ |
41 | #define MAXIMUM_PARTS 60 |
42 | |
43 | #define ACTIVE_FLAG 0x80 |
44 | |
45 | #define EXTENDED 0x05 |
46 | #define WIN98_EXTENDED 0x0f |
47 | #define LINUX_PARTITION 0x81 |
48 | #define LINUX_SWAP 0x82 |
49 | #define LINUX_NATIVE 0x83 |
50 | #define LINUX_EXTENDED 0x85 |
51 | #define LINUX_LVM 0x8e |
52 | #define LINUX_RAID 0xfd |
53 | |
54 | |
55 | enum { |
56 | OPT_b = 1 << 0, |
57 | OPT_C = 1 << 1, |
58 | OPT_H = 1 << 2, |
59 | OPT_l = 1 << 3, |
60 | OPT_S = 1 << 4, |
61 | OPT_u = 1 << 5, |
62 | OPT_s = (1 << 6) * ENABLE_FEATURE_FDISK_BLKSIZE, |
63 | }; |
64 | |
65 | |
66 | typedef unsigned long long ullong; |
67 | /* Used for sector numbers. Partition formats we know |
68 | * do not support more than 2^32 sectors |
69 | */ |
70 | typedef uint32_t sector_t; |
71 | #if UINT_MAX == 4294967295 |
72 | # define SECT_FMT "" |
73 | #elif ULONG_MAX == 4294967295 |
74 | # define SECT_FMT "l" |
75 | #else |
76 | # error Cant detect sizeof(uint32_t) |
77 | #endif |
78 | |
79 | struct hd_geometry { |
80 | unsigned char heads; |
81 | unsigned char sectors; |
82 | unsigned short cylinders; |
83 | unsigned long start; |
84 | }; |
85 | |
86 | #define HDIO_GETGEO 0x0301 /* get device geometry */ |
87 | |
88 | static const char msg_building_new_label[] ALIGN1 = |
89 | "Building a new %s. Changes will remain in memory only,\n" |
90 | "until you decide to write them. After that the previous content\n" |
91 | "won't be recoverable.\n\n"; |
92 | |
93 | static const char msg_part_already_defined[] ALIGN1 = |
94 | "Partition %u is already defined, delete it before re-adding\n"; |
95 | |
96 | |
97 | struct partition { |
98 | unsigned char boot_ind; /* 0x80 - active */ |
99 | unsigned char head; /* starting head */ |
100 | unsigned char sector; /* starting sector */ |
101 | unsigned char cyl; /* starting cylinder */ |
102 | unsigned char sys_ind; /* what partition type */ |
103 | unsigned char end_head; /* end head */ |
104 | unsigned char end_sector; /* end sector */ |
105 | unsigned char end_cyl; /* end cylinder */ |
106 | unsigned char start4[4]; /* starting sector counting from 0 */ |
107 | unsigned char size4[4]; /* nr of sectors in partition */ |
108 | } PACKED; |
109 | |
110 | #define unable_to_open "can't open '%s'" |
111 | #define unable_to_read "can't read from %s" |
112 | #define unable_to_seek "can't seek on %s" |
113 | |
114 | enum label_type { |
115 | LABEL_DOS, LABEL_SUN, LABEL_SGI, LABEL_AIX, LABEL_OSF |
116 | }; |
117 | |
118 | #define LABEL_IS_DOS (LABEL_DOS == current_label_type) |
119 | |
120 | #if ENABLE_FEATURE_SUN_LABEL |
121 | #define LABEL_IS_SUN (LABEL_SUN == current_label_type) |
122 | #define STATIC_SUN static |
123 | #else |
124 | #define LABEL_IS_SUN 0 |
125 | #define STATIC_SUN extern |
126 | #endif |
127 | |
128 | #if ENABLE_FEATURE_SGI_LABEL |
129 | #define LABEL_IS_SGI (LABEL_SGI == current_label_type) |
130 | #define STATIC_SGI static |
131 | #else |
132 | #define LABEL_IS_SGI 0 |
133 | #define STATIC_SGI extern |
134 | #endif |
135 | |
136 | #if ENABLE_FEATURE_AIX_LABEL |
137 | #define LABEL_IS_AIX (LABEL_AIX == current_label_type) |
138 | #define STATIC_AIX static |
139 | #else |
140 | #define LABEL_IS_AIX 0 |
141 | #define STATIC_AIX extern |
142 | #endif |
143 | |
144 | #if ENABLE_FEATURE_OSF_LABEL |
145 | #define LABEL_IS_OSF (LABEL_OSF == current_label_type) |
146 | #define STATIC_OSF static |
147 | #else |
148 | #define LABEL_IS_OSF 0 |
149 | #define STATIC_OSF extern |
150 | #endif |
151 | |
152 | enum action { OPEN_MAIN, TRY_ONLY, CREATE_EMPTY_DOS, CREATE_EMPTY_SUN }; |
153 | |
154 | static void update_units(void); |
155 | #if ENABLE_FEATURE_FDISK_WRITABLE |
156 | static void change_units(void); |
157 | static void reread_partition_table(int leave); |
158 | static void delete_partition(int i); |
159 | static unsigned get_partition(int warn, unsigned max); |
160 | static void list_types(const char *const *sys); |
161 | static sector_t read_int(sector_t low, sector_t dflt, sector_t high, sector_t base, const char *mesg); |
162 | #endif |
163 | static const char *partition_type(unsigned char type); |
164 | static void get_geometry(void); |
165 | #if ENABLE_FEATURE_SUN_LABEL || ENABLE_FEATURE_FDISK_WRITABLE |
166 | static int get_boot(enum action what); |
167 | #else |
168 | static int get_boot(void); |
169 | #endif |
170 | |
171 | #define PLURAL 0 |
172 | #define SINGULAR 1 |
173 | |
174 | static sector_t get_start_sect(const struct partition *p); |
175 | static sector_t get_nr_sects(const struct partition *p); |
176 | |
177 | /* |
178 | * per partition table entry data |
179 | * |
180 | * The four primary partitions have the same sectorbuffer (MBRbuffer) |
181 | * and have NULL ext_pointer. |
182 | * Each logical partition table entry has two pointers, one for the |
183 | * partition and one link to the next one. |
184 | */ |
185 | struct pte { |
186 | struct partition *part_table; /* points into sectorbuffer */ |
187 | struct partition *ext_pointer; /* points into sectorbuffer */ |
188 | sector_t offset_from_dev_start; /* disk sector number */ |
189 | char *sectorbuffer; /* disk sector contents */ |
190 | #if ENABLE_FEATURE_FDISK_WRITABLE |
191 | char changed; /* boolean */ |
192 | #endif |
193 | }; |
194 | |
195 | /* DOS partition types */ |
196 | |
197 | static const char *const i386_sys_types[] = { |
198 | "\x00" "Empty", |
199 | "\x01" "FAT12", |
200 | "\x04" "FAT16 <32M", |
201 | "\x05" "Extended", /* DOS 3.3+ extended partition */ |
202 | "\x06" "FAT16", /* DOS 16-bit >=32M */ |
203 | "\x07" "HPFS/NTFS", /* OS/2 IFS, eg, HPFS or NTFS or QNX */ |
204 | "\x0a" "OS/2 Boot Manager",/* OS/2 Boot Manager */ |
205 | "\x0b" "Win95 FAT32", |
206 | "\x0c" "Win95 FAT32 (LBA)",/* LBA really is 'Extended Int 13h' */ |
207 | "\x0e" "Win95 FAT16 (LBA)", |
208 | "\x0f" "Win95 Ext'd (LBA)", |
209 | "\x11" "Hidden FAT12", |
210 | "\x12" "Compaq diagnostics", |
211 | "\x14" "Hidden FAT16 <32M", |
212 | "\x16" "Hidden FAT16", |
213 | "\x17" "Hidden HPFS/NTFS", |
214 | "\x1b" "Hidden Win95 FAT32", |
215 | "\x1c" "Hidden W95 FAT32 (LBA)", |
216 | "\x1e" "Hidden W95 FAT16 (LBA)", |
217 | "\x3c" "Part.Magic recovery", |
218 | "\x41" "PPC PReP Boot", |
219 | "\x42" "SFS", |
220 | "\x63" "GNU HURD or SysV", /* GNU HURD or Mach or Sys V/386 (such as ISC UNIX) */ |
221 | "\x80" "Old Minix", /* Minix 1.4a and earlier */ |
222 | "\x81" "Minix / old Linux",/* Minix 1.4b and later */ |
223 | "\x82" "Linux swap", /* also Solaris */ |
224 | "\x83" "Linux", |
225 | "\x84" "OS/2 hidden C: drive", |
226 | "\x85" "Linux extended", |
227 | "\x86" "NTFS volume set", |
228 | "\x87" "NTFS volume set", |
229 | "\x8e" "Linux LVM", |
230 | "\x9f" "BSD/OS", /* BSDI */ |
231 | "\xa0" "Thinkpad hibernation", |
232 | "\xa5" "FreeBSD", /* various BSD flavours */ |
233 | "\xa6" "OpenBSD", |
234 | "\xa8" "Darwin UFS", |
235 | "\xa9" "NetBSD", |
236 | "\xab" "Darwin boot", |
237 | "\xb7" "BSDI fs", |
238 | "\xb8" "BSDI swap", |
239 | "\xbe" "Solaris boot", |
240 | "\xeb" "BeOS fs", |
241 | "\xee" "EFI GPT", /* Intel EFI GUID Partition Table */ |
242 | "\xef" "EFI (FAT-12/16/32)", /* Intel EFI System Partition */ |
243 | "\xf0" "Linux/PA-RISC boot", /* Linux/PA-RISC boot loader */ |
244 | "\xf2" "DOS secondary", /* DOS 3.3+ secondary */ |
245 | "\xfd" "Linux raid autodetect", /* New (2.2.x) raid partition with |
246 | autodetect using persistent |
247 | superblock */ |
248 | #if 0 /* ENABLE_WEIRD_PARTITION_TYPES */ |
249 | "\x02" "XENIX root", |
250 | "\x03" "XENIX usr", |
251 | "\x08" "AIX", /* AIX boot (AIX -- PS/2 port) or SplitDrive */ |
252 | "\x09" "AIX bootable", /* AIX data or Coherent */ |
253 | "\x10" "OPUS", |
254 | "\x18" "AST SmartSleep", |
255 | "\x24" "NEC DOS", |
256 | "\x39" "Plan 9", |
257 | "\x40" "Venix 80286", |
258 | "\x4d" "QNX4.x", |
259 | "\x4e" "QNX4.x 2nd part", |
260 | "\x4f" "QNX4.x 3rd part", |
261 | "\x50" "OnTrack DM", |
262 | "\x51" "OnTrack DM6 Aux1", /* (or Novell) */ |
263 | "\x52" "CP/M", /* CP/M or Microport SysV/AT */ |
264 | "\x53" "OnTrack DM6 Aux3", |
265 | "\x54" "OnTrackDM6", |
266 | "\x55" "EZ-Drive", |
267 | "\x56" "Golden Bow", |
268 | "\x5c" "Priam Edisk", |
269 | "\x61" "SpeedStor", |
270 | "\x64" "Novell Netware 286", |
271 | "\x65" "Novell Netware 386", |
272 | "\x70" "DiskSecure Multi-Boot", |
273 | "\x75" "PC/IX", |
274 | "\x93" "Amoeba", |
275 | "\x94" "Amoeba BBT", /* (bad block table) */ |
276 | "\xa7" "NeXTSTEP", |
277 | "\xbb" "Boot Wizard hidden", |
278 | "\xc1" "DRDOS/sec (FAT-12)", |
279 | "\xc4" "DRDOS/sec (FAT-16 < 32M)", |
280 | "\xc6" "DRDOS/sec (FAT-16)", |
281 | "\xc7" "Syrinx", |
282 | "\xda" "Non-FS data", |
283 | "\xdb" "CP/M / CTOS / ...",/* CP/M or Concurrent CP/M or |
284 | Concurrent DOS or CTOS */ |
285 | "\xde" "Dell Utility", /* Dell PowerEdge Server utilities */ |
286 | "\xdf" "BootIt", /* BootIt EMBRM */ |
287 | "\xe1" "DOS access", /* DOS access or SpeedStor 12-bit FAT |
288 | extended partition */ |
289 | "\xe3" "DOS R/O", /* DOS R/O or SpeedStor */ |
290 | "\xe4" "SpeedStor", /* SpeedStor 16-bit FAT extended |
291 | partition < 1024 cyl. */ |
292 | "\xf1" "SpeedStor", |
293 | "\xf4" "SpeedStor", /* SpeedStor large partition */ |
294 | "\xfe" "LANstep", /* SpeedStor >1024 cyl. or LANstep */ |
295 | "\xff" "BBT", /* Xenix Bad Block Table */ |
296 | #endif |
297 | NULL |
298 | }; |
299 | |
300 | enum { |
301 | dev_fd = 3 /* the disk */ |
302 | }; |
303 | |
304 | /* Globals */ |
305 | struct globals { |
306 | char *line_ptr; |
307 | |
308 | const char *disk_device; |
309 | int g_partitions; // = 4; /* maximum partition + 1 */ |
310 | unsigned units_per_sector; // = 1; |
311 | unsigned sector_size; // = DEFAULT_SECTOR_SIZE; |
312 | unsigned user_set_sector_size; |
313 | unsigned sector_offset; // = 1; |
314 | unsigned g_heads, g_sectors, g_cylinders; |
315 | smallint /* enum label_type */ current_label_type; |
316 | smallint display_in_cyl_units; // = 1; |
317 | #if ENABLE_FEATURE_OSF_LABEL |
318 | smallint possibly_osf_label; |
319 | #endif |
320 | |
321 | smallint listing; /* no aborts for fdisk -l */ |
322 | smallint dos_compatible_flag; // = 1; |
323 | #if ENABLE_FEATURE_FDISK_WRITABLE |
324 | //int dos_changed; |
325 | smallint nowarn; /* no warnings for fdisk -l/-s */ |
326 | #endif |
327 | int ext_index; /* the prime extended partition */ |
328 | unsigned user_cylinders, user_heads, user_sectors; |
329 | unsigned pt_heads, pt_sectors; |
330 | unsigned kern_heads, kern_sectors; |
331 | sector_t extended_offset; /* offset of link pointers */ |
332 | sector_t total_number_of_sectors; |
333 | |
334 | jmp_buf listingbuf; |
335 | char line_buffer[80]; |
336 | char partname_buffer[80]; |
337 | /* Raw disk label. For DOS-type partition tables the MBR, |
338 | * with descriptions of the primary partitions. */ |
339 | char MBRbuffer[MAX_SECTOR_SIZE]; |
340 | /* Partition tables */ |
341 | struct pte ptes[MAXIMUM_PARTS]; |
342 | }; |
343 | #define G (*ptr_to_globals) |
344 | #define line_ptr (G.line_ptr ) |
345 | #define disk_device (G.disk_device ) |
346 | #define g_partitions (G.g_partitions ) |
347 | #define units_per_sector (G.units_per_sector ) |
348 | #define sector_size (G.sector_size ) |
349 | #define user_set_sector_size (G.user_set_sector_size) |
350 | #define sector_offset (G.sector_offset ) |
351 | #define g_heads (G.g_heads ) |
352 | #define g_sectors (G.g_sectors ) |
353 | #define g_cylinders (G.g_cylinders ) |
354 | #define current_label_type (G.current_label_type ) |
355 | #define display_in_cyl_units (G.display_in_cyl_units) |
356 | #define possibly_osf_label (G.possibly_osf_label ) |
357 | #define listing (G.listing ) |
358 | #define dos_compatible_flag (G.dos_compatible_flag ) |
359 | #define nowarn (G.nowarn ) |
360 | #define ext_index (G.ext_index ) |
361 | #define user_cylinders (G.user_cylinders ) |
362 | #define user_heads (G.user_heads ) |
363 | #define user_sectors (G.user_sectors ) |
364 | #define pt_heads (G.pt_heads ) |
365 | #define pt_sectors (G.pt_sectors ) |
366 | #define kern_heads (G.kern_heads ) |
367 | #define kern_sectors (G.kern_sectors ) |
368 | #define extended_offset (G.extended_offset ) |
369 | #define total_number_of_sectors (G.total_number_of_sectors) |
370 | #define listingbuf (G.listingbuf ) |
371 | #define line_buffer (G.line_buffer ) |
372 | #define partname_buffer (G.partname_buffer) |
373 | #define MBRbuffer (G.MBRbuffer ) |
374 | #define ptes (G.ptes ) |
375 | #define INIT_G() do { \ |
376 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ |
377 | sector_size = DEFAULT_SECTOR_SIZE; \ |
378 | sector_offset = 1; \ |
379 | g_partitions = 4; \ |
380 | display_in_cyl_units = 1; \ |
381 | units_per_sector = 1; \ |
382 | dos_compatible_flag = 1; \ |
383 | } while (0) |
384 | |
385 | |
386 | /* TODO: move to libbb? */ |
387 | /* TODO: return unsigned long long, FEATURE_FDISK_BLKSIZE _can_ handle |
388 | * disks > 2^32 sectors |
389 | */ |
390 | static sector_t bb_BLKGETSIZE_sectors(int fd) |
391 | { |
392 | uint64_t v64; |
393 | unsigned long longsectors; |
394 | |
395 | if (ioctl(fd, BLKGETSIZE64, &v64) == 0) { |
396 | /* Got bytes, convert to 512 byte sectors */ |
397 | v64 >>= 9; |
398 | if (v64 != (sector_t)v64) { |
399 | ret_trunc: |
400 | /* Not only DOS, but all other partition tables |
401 | * we support can't record more than 32 bit |
402 | * sector counts or offsets |
403 | */ |
404 | bb_error_msg("device has more than 2^32 sectors, can't use all of them"); |
405 | v64 = (uint32_t)-1L; |
406 | } |
407 | return v64; |
408 | } |
409 | /* Needs temp of type long */ |
410 | if (ioctl(fd, BLKGETSIZE, &longsectors)) { |
411 | /* Perhaps this is a disk image */ |
412 | off_t sz = lseek(fd, 0, SEEK_END); |
413 | longsectors = 0; |
414 | if (sz > 0) |
415 | longsectors = (uoff_t)sz / sector_size; |
416 | lseek(fd, 0, SEEK_SET); |
417 | } |
418 | if (sizeof(long) > sizeof(sector_t) |
419 | && longsectors != (sector_t)longsectors |
420 | ) { |
421 | goto ret_trunc; |
422 | } |
423 | return longsectors; |
424 | } |
425 | |
426 | |
427 | #define IS_EXTENDED(i) \ |
428 | ((i) == EXTENDED || (i) == WIN98_EXTENDED || (i) == LINUX_EXTENDED) |
429 | |
430 | #define cround(n) (display_in_cyl_units ? ((n)/units_per_sector)+1 : (n)) |
431 | |
432 | #define scround(x) (((x)+units_per_sector-1)/units_per_sector) |
433 | |
434 | #define pt_offset(b, n) \ |
435 | ((struct partition *)((b) + 0x1be + (n) * sizeof(struct partition))) |
436 | |
437 | #define sector(s) ((s) & 0x3f) |
438 | |
439 | #define cylinder(s, c) ((c) | (((s) & 0xc0) << 2)) |
440 | |
441 | #define hsc2sector(h,s,c) \ |
442 | (sector(s) - 1 + sectors * ((h) + heads * cylinder(s,c))) |
443 | |
444 | static void |
445 | close_dev_fd(void) |
446 | { |
447 | /* Not really closing, but making sure it is open, and to harmless place */ |
448 | xmove_fd(xopen(bb_dev_null, O_RDONLY), dev_fd); |
449 | } |
450 | |
451 | /* |
452 | * Return partition name - uses static storage |
453 | */ |
454 | static const char * |
455 | partname(const char *dev, int pno, int lth) |
456 | { |
457 | const char *p; |
458 | int w, wp; |
459 | int bufsiz; |
460 | char *bufp; |
461 | |
462 | bufp = partname_buffer; |
463 | bufsiz = sizeof(partname_buffer); |
464 | |
465 | w = strlen(dev); |
466 | p = ""; |
467 | |
468 | if (isdigit(dev[w-1])) |
469 | p = "p"; |
470 | |
471 | /* devfs kludge - note: fdisk partition names are not supposed |
472 | to equal kernel names, so there is no reason to do this */ |
473 | if (strcmp(dev + w - 4, "disc") == 0) { |
474 | w -= 4; |
475 | p = "part"; |
476 | } |
477 | |
478 | wp = strlen(p); |
479 | |
480 | if (lth) { |
481 | snprintf(bufp, bufsiz, "%*.*s%s%-2u", |
482 | lth-wp-2, w, dev, p, pno); |
483 | } else { |
484 | snprintf(bufp, bufsiz, "%.*s%s%-2u", w, dev, p, pno); |
485 | } |
486 | return bufp; |
487 | } |
488 | |
489 | static ALWAYS_INLINE struct partition * |
490 | get_part_table(int i) |
491 | { |
492 | return ptes[i].part_table; |
493 | } |
494 | |
495 | static const char * |
496 | str_units(int n) |
497 | { /* n==1: use singular */ |
498 | if (n == 1) |
499 | return display_in_cyl_units ? "cylinder" : "sector"; |
500 | return display_in_cyl_units ? "cylinders" : "sectors"; |
501 | } |
502 | |
503 | static int |
504 | valid_part_table_flag(const char *mbuffer) |
505 | { |
506 | return (mbuffer[510] == 0x55 && (uint8_t)mbuffer[511] == 0xaa); |
507 | } |
508 | |
509 | static void fdisk_fatal(const char *why) |
510 | { |
511 | if (listing) { |
512 | close_dev_fd(); |
513 | longjmp(listingbuf, 1); |
514 | } |
515 | bb_error_msg_and_die(why, disk_device); |
516 | } |
517 | |
518 | static void |
519 | seek_sector(sector_t secno) |
520 | { |
521 | #if ENABLE_FDISK_SUPPORT_LARGE_DISKS |
522 | off64_t off = (off64_t)secno * sector_size; |
523 | if (lseek64(dev_fd, off, SEEK_SET) == (off64_t) -1) |
524 | fdisk_fatal(unable_to_seek); |
525 | #else |
526 | uint64_t off = (uint64_t)secno * sector_size; |
527 | if (off > MAXINT(off_t) |
528 | || lseek(dev_fd, (off_t)off, SEEK_SET) == (off_t) -1 |
529 | ) { |
530 | fdisk_fatal(unable_to_seek); |
531 | } |
532 | #endif |
533 | } |
534 | |
535 | #if ENABLE_FEATURE_FDISK_WRITABLE |
536 | /* Read line; return 0 or first printable char */ |
537 | static int |
538 | read_line(const char *prompt) |
539 | { |
540 | int sz; |
541 | |
542 | sz = read_line_input(prompt, line_buffer, sizeof(line_buffer), NULL); |
543 | if (sz <= 0) |
544 | exit(EXIT_SUCCESS); /* Ctrl-D or Ctrl-C */ |
545 | |
546 | if (line_buffer[sz-1] == '\n') |
547 | line_buffer[--sz] = '\0'; |
548 | |
549 | line_ptr = line_buffer; |
550 | while (*line_ptr != '\0' && (unsigned char)*line_ptr <= ' ') |
551 | line_ptr++; |
552 | return *line_ptr; |
553 | } |
554 | |
555 | static void |
556 | set_all_unchanged(void) |
557 | { |
558 | int i; |
559 | |
560 | for (i = 0; i < MAXIMUM_PARTS; i++) |
561 | ptes[i].changed = 0; |
562 | } |
563 | |
564 | static ALWAYS_INLINE void |
565 | set_changed(int i) |
566 | { |
567 | ptes[i].changed = 1; |
568 | } |
569 | |
570 | static ALWAYS_INLINE void |
571 | write_part_table_flag(char *b) |
572 | { |
573 | b[510] = 0x55; |
574 | b[511] = 0xaa; |
575 | } |
576 | |
577 | static char |
578 | read_nonempty(const char *mesg) |
579 | { |
580 | while (!read_line(mesg)) |
581 | continue; |
582 | return *line_ptr; |
583 | } |
584 | |
585 | static char |
586 | read_maybe_empty(const char *mesg) |
587 | { |
588 | if (!read_line(mesg)) { |
589 | line_ptr = line_buffer; |
590 | line_ptr[0] = '\n'; |
591 | line_ptr[1] = '\0'; |
592 | } |
593 | return line_ptr[0]; |
594 | } |
595 | |
596 | static int |
597 | read_hex(const char *const *sys) |
598 | { |
599 | unsigned long v; |
600 | while (1) { |
601 | read_nonempty("Hex code (type L to list codes): "); |
602 | if ((line_ptr[0] | 0x20) == 'l') { |
603 | list_types(sys); |
604 | continue; |
605 | } |
606 | v = bb_strtoul(line_ptr, NULL, 16); |
607 | if (v <= 0xff) |
608 | return v; |
609 | } |
610 | } |
611 | |
612 | static void |
613 | write_sector(sector_t secno, const void *buf) |
614 | { |
615 | seek_sector(secno); |
616 | xwrite(dev_fd, buf, sector_size); |
617 | } |
618 | #endif /* FEATURE_FDISK_WRITABLE */ |
619 | |
620 | |
621 | #include "fdisk_aix.c" |
622 | |
623 | struct sun_partition { |
624 | unsigned char info[128]; /* Informative text string */ |
625 | unsigned char spare0[14]; |
626 | struct sun_info { |
627 | unsigned char spare1; |
628 | unsigned char id; |
629 | unsigned char spare2; |
630 | unsigned char flags; |
631 | } infos[8]; |
632 | unsigned char spare1[246]; /* Boot information etc. */ |
633 | unsigned short rspeed; /* Disk rotational speed */ |
634 | unsigned short pcylcount; /* Physical cylinder count */ |
635 | unsigned short sparecyl; /* extra sects per cylinder */ |
636 | unsigned char spare2[4]; /* More magic... */ |
637 | unsigned short ilfact; /* Interleave factor */ |
638 | unsigned short ncyl; /* Data cylinder count */ |
639 | unsigned short nacyl; /* Alt. cylinder count */ |
640 | unsigned short ntrks; /* Tracks per cylinder */ |
641 | unsigned short nsect; /* Sectors per track */ |
642 | unsigned char spare3[4]; /* Even more magic... */ |
643 | struct sun_partinfo { |
644 | uint32_t start_cylinder; |
645 | uint32_t num_sectors; |
646 | } partitions[8]; |
647 | unsigned short magic; /* Magic number */ |
648 | unsigned short csum; /* Label xor'd checksum */ |
649 | } FIX_ALIASING; |
650 | typedef struct sun_partition sun_partition; |
651 | #define sunlabel ((sun_partition *)MBRbuffer) |
652 | STATIC_OSF void bsd_select(void); |
653 | STATIC_OSF void xbsd_print_disklabel(int); |
654 | #include "fdisk_osf.c" |
655 | |
656 | #if ENABLE_FEATURE_SGI_LABEL || ENABLE_FEATURE_SUN_LABEL |
657 | static uint16_t |
658 | fdisk_swap16(uint16_t x) |
659 | { |
660 | return (x << 8) | (x >> 8); |
661 | } |
662 | |
663 | static uint32_t |
664 | fdisk_swap32(uint32_t x) |
665 | { |
666 | return (x << 24) | |
667 | ((x & 0xFF00) << 8) | |
668 | ((x & 0xFF0000) >> 8) | |
669 | (x >> 24); |
670 | } |
671 | #endif |
672 | |
673 | STATIC_SGI const char *const sgi_sys_types[]; |
674 | STATIC_SGI unsigned sgi_get_num_sectors(int i); |
675 | STATIC_SGI int sgi_get_sysid(int i); |
676 | STATIC_SGI void sgi_delete_partition(int i); |
677 | STATIC_SGI void sgi_change_sysid(int i, int sys); |
678 | STATIC_SGI void sgi_list_table(int xtra); |
679 | #if ENABLE_FEATURE_FDISK_ADVANCED |
680 | STATIC_SGI void sgi_set_xcyl(void); |
681 | #endif |
682 | STATIC_SGI int verify_sgi(int verbose); |
683 | STATIC_SGI void sgi_add_partition(int n, int sys); |
684 | STATIC_SGI void sgi_set_swappartition(int i); |
685 | STATIC_SGI const char *sgi_get_bootfile(void); |
686 | STATIC_SGI void sgi_set_bootfile(const char* aFile); |
687 | STATIC_SGI void create_sgiinfo(void); |
688 | STATIC_SGI void sgi_write_table(void); |
689 | STATIC_SGI void sgi_set_bootpartition(int i); |
690 | #include "fdisk_sgi.c" |
691 | |
692 | STATIC_SUN const char *const sun_sys_types[]; |
693 | STATIC_SUN void sun_delete_partition(int i); |
694 | STATIC_SUN void sun_change_sysid(int i, int sys); |
695 | STATIC_SUN void sun_list_table(int xtra); |
696 | STATIC_SUN void add_sun_partition(int n, int sys); |
697 | #if ENABLE_FEATURE_FDISK_ADVANCED |
698 | STATIC_SUN void sun_set_alt_cyl(void); |
699 | STATIC_SUN void sun_set_ncyl(int cyl); |
700 | STATIC_SUN void sun_set_xcyl(void); |
701 | STATIC_SUN void sun_set_ilfact(void); |
702 | STATIC_SUN void sun_set_rspeed(void); |
703 | STATIC_SUN void sun_set_pcylcount(void); |
704 | #endif |
705 | STATIC_SUN void toggle_sunflags(int i, unsigned char mask); |
706 | STATIC_SUN void verify_sun(void); |
707 | STATIC_SUN void sun_write_table(void); |
708 | #include "fdisk_sun.c" |
709 | |
710 | |
711 | static inline_if_little_endian unsigned |
712 | read4_little_endian(const unsigned char *cp) |
713 | { |
714 | uint32_t v; |
715 | move_from_unaligned32(v, cp); |
716 | return SWAP_LE32(v); |
717 | } |
718 | |
719 | static sector_t |
720 | get_start_sect(const struct partition *p) |
721 | { |
722 | return read4_little_endian(p->start4); |
723 | } |
724 | |
725 | static sector_t |
726 | get_nr_sects(const struct partition *p) |
727 | { |
728 | return read4_little_endian(p->size4); |
729 | } |
730 | |
731 | #if ENABLE_FEATURE_FDISK_WRITABLE |
732 | /* start_sect and nr_sects are stored little endian on all machines */ |
733 | /* moreover, they are not aligned correctly */ |
734 | static inline_if_little_endian void |
735 | store4_little_endian(unsigned char *cp, unsigned val) |
736 | { |
737 | uint32_t v = SWAP_LE32(val); |
738 | move_to_unaligned32(cp, v); |
739 | } |
740 | |
741 | static void |
742 | set_start_sect(struct partition *p, unsigned start_sect) |
743 | { |
744 | store4_little_endian(p->start4, start_sect); |
745 | } |
746 | |
747 | static void |
748 | set_nr_sects(struct partition *p, unsigned nr_sects) |
749 | { |
750 | store4_little_endian(p->size4, nr_sects); |
751 | } |
752 | #endif |
753 | |
754 | /* Allocate a buffer and read a partition table sector */ |
755 | static void |
756 | read_pte(struct pte *pe, sector_t offset) |
757 | { |
758 | pe->offset_from_dev_start = offset; |
759 | pe->sectorbuffer = xzalloc(sector_size); |
760 | seek_sector(offset); |
761 | /* xread would make us abort - bad for fdisk -l */ |
762 | if (full_read(dev_fd, pe->sectorbuffer, sector_size) != sector_size) |
763 | fdisk_fatal(unable_to_read); |
764 | #if ENABLE_FEATURE_FDISK_WRITABLE |
765 | pe->changed = 0; |
766 | #endif |
767 | pe->part_table = pe->ext_pointer = NULL; |
768 | } |
769 | |
770 | static sector_t |
771 | get_partition_start_from_dev_start(const struct pte *pe) |
772 | { |
773 | return pe->offset_from_dev_start + get_start_sect(pe->part_table); |
774 | } |
775 | |
776 | #if ENABLE_FEATURE_FDISK_WRITABLE |
777 | /* |
778 | * Avoid warning about DOS partitions when no DOS partition was changed. |
779 | * Here a heuristic "is probably dos partition". |
780 | * We might also do the opposite and warn in all cases except |
781 | * for "is probably nondos partition". |
782 | */ |
783 | #ifdef UNUSED |
784 | static int |
785 | is_dos_partition(int t) |
786 | { |
787 | return (t == 1 || t == 4 || t == 6 || |
788 | t == 0x0b || t == 0x0c || t == 0x0e || |
789 | t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 || |
790 | t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 || |
791 | t == 0xc1 || t == 0xc4 || t == 0xc6); |
792 | } |
793 | #endif |
794 | |
795 | static void |
796 | menu(void) |
797 | { |
798 | puts("Command Action"); |
799 | if (LABEL_IS_SUN) { |
800 | puts("a\ttoggle a read only flag"); /* sun */ |
801 | puts("b\tedit bsd disklabel"); |
802 | puts("c\ttoggle the mountable flag"); /* sun */ |
803 | puts("d\tdelete a partition"); |
804 | puts("l\tlist known partition types"); |
805 | puts("n\tadd a new partition"); |
806 | puts("o\tcreate a new empty DOS partition table"); |
807 | puts("p\tprint the partition table"); |
808 | puts("q\tquit without saving changes"); |
809 | puts("s\tcreate a new empty Sun disklabel"); /* sun */ |
810 | puts("t\tchange a partition's system id"); |
811 | puts("u\tchange display/entry units"); |
812 | puts("v\tverify the partition table"); |
813 | puts("w\twrite table to disk and exit"); |
814 | #if ENABLE_FEATURE_FDISK_ADVANCED |
815 | puts("x\textra functionality (experts only)"); |
816 | #endif |
817 | } else if (LABEL_IS_SGI) { |
818 | puts("a\tselect bootable partition"); /* sgi flavour */ |
819 | puts("b\tedit bootfile entry"); /* sgi */ |
820 | puts("c\tselect sgi swap partition"); /* sgi flavour */ |
821 | puts("d\tdelete a partition"); |
822 | puts("l\tlist known partition types"); |
823 | puts("n\tadd a new partition"); |
824 | puts("o\tcreate a new empty DOS partition table"); |
825 | puts("p\tprint the partition table"); |
826 | puts("q\tquit without saving changes"); |
827 | puts("s\tcreate a new empty Sun disklabel"); /* sun */ |
828 | puts("t\tchange a partition's system id"); |
829 | puts("u\tchange display/entry units"); |
830 | puts("v\tverify the partition table"); |
831 | puts("w\twrite table to disk and exit"); |
832 | } else if (LABEL_IS_AIX) { |
833 | puts("o\tcreate a new empty DOS partition table"); |
834 | puts("q\tquit without saving changes"); |
835 | puts("s\tcreate a new empty Sun disklabel"); /* sun */ |
836 | } else { |
837 | puts("a\ttoggle a bootable flag"); |
838 | puts("b\tedit bsd disklabel"); |
839 | puts("c\ttoggle the dos compatibility flag"); |
840 | puts("d\tdelete a partition"); |
841 | puts("l\tlist known partition types"); |
842 | puts("n\tadd a new partition"); |
843 | puts("o\tcreate a new empty DOS partition table"); |
844 | puts("p\tprint the partition table"); |
845 | puts("q\tquit without saving changes"); |
846 | puts("s\tcreate a new empty Sun disklabel"); /* sun */ |
847 | puts("t\tchange a partition's system id"); |
848 | puts("u\tchange display/entry units"); |
849 | puts("v\tverify the partition table"); |
850 | puts("w\twrite table to disk and exit"); |
851 | #if ENABLE_FEATURE_FDISK_ADVANCED |
852 | puts("x\textra functionality (experts only)"); |
853 | #endif |
854 | } |
855 | } |
856 | #endif /* FEATURE_FDISK_WRITABLE */ |
857 | |
858 | |
859 | #if ENABLE_FEATURE_FDISK_ADVANCED |
860 | static void |
861 | xmenu(void) |
862 | { |
863 | puts("Command Action"); |
864 | if (LABEL_IS_SUN) { |
865 | puts("a\tchange number of alternate cylinders"); /*sun*/ |
866 | puts("c\tchange number of cylinders"); |
867 | puts("d\tprint the raw data in the partition table"); |
868 | puts("e\tchange number of extra sectors per cylinder");/*sun*/ |
869 | puts("h\tchange number of heads"); |
870 | puts("i\tchange interleave factor"); /*sun*/ |
871 | puts("o\tchange rotation speed (rpm)"); /*sun*/ |
872 | puts("p\tprint the partition table"); |
873 | puts("q\tquit without saving changes"); |
874 | puts("r\treturn to main menu"); |
875 | puts("s\tchange number of sectors/track"); |
876 | puts("v\tverify the partition table"); |
877 | puts("w\twrite table to disk and exit"); |
878 | puts("y\tchange number of physical cylinders"); /*sun*/ |
879 | } else if (LABEL_IS_SGI) { |
880 | puts("b\tmove beginning of data in a partition"); /* !sun */ |
881 | puts("c\tchange number of cylinders"); |
882 | puts("d\tprint the raw data in the partition table"); |
883 | puts("e\tlist extended partitions"); /* !sun */ |
884 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */ |
885 | puts("h\tchange number of heads"); |
886 | puts("p\tprint the partition table"); |
887 | puts("q\tquit without saving changes"); |
888 | puts("r\treturn to main menu"); |
889 | puts("s\tchange number of sectors/track"); |
890 | puts("v\tverify the partition table"); |
891 | puts("w\twrite table to disk and exit"); |
892 | } else if (LABEL_IS_AIX) { |
893 | puts("b\tmove beginning of data in a partition"); /* !sun */ |
894 | puts("c\tchange number of cylinders"); |
895 | puts("d\tprint the raw data in the partition table"); |
896 | puts("e\tlist extended partitions"); /* !sun */ |
897 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */ |
898 | puts("h\tchange number of heads"); |
899 | puts("p\tprint the partition table"); |
900 | puts("q\tquit without saving changes"); |
901 | puts("r\treturn to main menu"); |
902 | puts("s\tchange number of sectors/track"); |
903 | puts("v\tverify the partition table"); |
904 | puts("w\twrite table to disk and exit"); |
905 | } else { |
906 | puts("b\tmove beginning of data in a partition"); /* !sun */ |
907 | puts("c\tchange number of cylinders"); |
908 | puts("d\tprint the raw data in the partition table"); |
909 | puts("e\tlist extended partitions"); /* !sun */ |
910 | puts("f\tfix partition order"); /* !sun, !aix, !sgi */ |
911 | #if ENABLE_FEATURE_SGI_LABEL |
912 | puts("g\tcreate an IRIX (SGI) partition table");/* sgi */ |
913 | #endif |
914 | puts("h\tchange number of heads"); |
915 | puts("p\tprint the partition table"); |
916 | puts("q\tquit without saving changes"); |
917 | puts("r\treturn to main menu"); |
918 | puts("s\tchange number of sectors/track"); |
919 | puts("v\tverify the partition table"); |
920 | puts("w\twrite table to disk and exit"); |
921 | } |
922 | } |
923 | #endif /* ADVANCED mode */ |
924 | |
925 | #if ENABLE_FEATURE_FDISK_WRITABLE |
926 | static const char *const * |
927 | get_sys_types(void) |
928 | { |
929 | return ( |
930 | LABEL_IS_SUN ? sun_sys_types : |
931 | LABEL_IS_SGI ? sgi_sys_types : |
932 | i386_sys_types); |
933 | } |
934 | #else |
935 | #define get_sys_types() i386_sys_types |
936 | #endif |
937 | |
938 | static const char * |
939 | partition_type(unsigned char type) |
940 | { |
941 | int i; |
942 | const char *const *types = get_sys_types(); |
943 | |
944 | for (i = 0; types[i]; i++) |
945 | if ((unsigned char)types[i][0] == type) |
946 | return types[i] + 1; |
947 | |
948 | return "Unknown"; |
949 | } |
950 | |
951 | static int |
952 | is_cleared_partition(const struct partition *p) |
953 | { |
954 | /* We consider partition "cleared" only if it has only zeros */ |
955 | const char *cp = (const char *)p; |
956 | int cnt = sizeof(*p); |
957 | char bits = 0; |
958 | while (--cnt >= 0) |
959 | bits |= *cp++; |
960 | return (bits == 0); |
961 | } |
962 | |
963 | static void |
964 | clear_partition(struct partition *p) |
965 | { |
966 | if (p) |
967 | memset(p, 0, sizeof(*p)); |
968 | } |
969 | |
970 | #if ENABLE_FEATURE_FDISK_WRITABLE |
971 | static int |
972 | get_sysid(int i) |
973 | { |
974 | return LABEL_IS_SUN ? sunlabel->infos[i].id : |
975 | (LABEL_IS_SGI ? sgi_get_sysid(i) : |
976 | ptes[i].part_table->sys_ind); |
977 | } |
978 | |
979 | static void |
980 | list_types(const char *const *sys) |
981 | { |
982 | enum { COLS = 3 }; |
983 | |
984 | unsigned last[COLS]; |
985 | unsigned done, next, size; |
986 | int i; |
987 | |
988 | for (size = 0; sys[size]; size++) |
989 | continue; |
990 | |
991 | done = 0; |
992 | for (i = COLS-1; i >= 0; i--) { |
993 | done += (size + i - done) / (i + 1); |
994 | last[COLS-1 - i] = done; |
995 | } |
996 | |
997 | i = done = next = 0; |
998 | do { |
999 | printf("%c%2x %-22.22s", i ? ' ' : '\n', |
1000 | (unsigned char)sys[next][0], |
1001 | sys[next] + 1); |
1002 | next = last[i++] + done; |
1003 | if (i >= COLS || next >= last[i]) { |
1004 | i = 0; |
1005 | next = ++done; |
1006 | } |
1007 | } while (done < last[0]); |
1008 | bb_putchar('\n'); |
1009 | } |
1010 | |
1011 | #define set_hsc(h, s, c, sector) do \ |
1012 | { \ |
1013 | s = sector % g_sectors + 1; \ |
1014 | sector /= g_sectors; \ |
1015 | h = sector % g_heads; \ |
1016 | sector /= g_heads; \ |
1017 | c = sector & 0xff; \ |
1018 | s |= (sector >> 2) & 0xc0; \ |
1019 | } while (0) |
1020 | |
1021 | static void set_hsc_start_end(struct partition *p, sector_t start, sector_t stop) |
1022 | { |
1023 | if (dos_compatible_flag && (start / (g_sectors * g_heads) > 1023)) |
1024 | start = g_heads * g_sectors * 1024 - 1; |
1025 | set_hsc(p->head, p->sector, p->cyl, start); |
1026 | |
1027 | if (dos_compatible_flag && (stop / (g_sectors * g_heads) > 1023)) |
1028 | stop = g_heads * g_sectors * 1024 - 1; |
1029 | set_hsc(p->end_head, p->end_sector, p->end_cyl, stop); |
1030 | } |
1031 | |
1032 | static void |
1033 | set_partition(int i, int doext, sector_t start, sector_t stop, int sysid) |
1034 | { |
1035 | struct partition *p; |
1036 | sector_t offset; |
1037 | |
1038 | if (doext) { |
1039 | p = ptes[i].ext_pointer; |
1040 | offset = extended_offset; |
1041 | } else { |
1042 | p = ptes[i].part_table; |
1043 | offset = ptes[i].offset_from_dev_start; |
1044 | } |
1045 | p->boot_ind = 0; |
1046 | p->sys_ind = sysid; |
1047 | set_start_sect(p, start - offset); |
1048 | set_nr_sects(p, stop - start + 1); |
1049 | set_hsc_start_end(p, start, stop); |
1050 | ptes[i].changed = 1; |
1051 | } |
1052 | #endif |
1053 | |
1054 | static int |
1055 | warn_geometry(void) |
1056 | { |
1057 | if (g_heads && g_sectors && g_cylinders) |
1058 | return 0; |
1059 | |
1060 | printf("Unknown value(s) for:"); |
1061 | if (!g_heads) |
1062 | printf(" heads"); |
1063 | if (!g_sectors) |
1064 | printf(" sectors"); |
1065 | if (!g_cylinders) |
1066 | printf(" cylinders"); |
1067 | printf( |
1068 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1069 | " (settable in the extra functions menu)" |
1070 | #endif |
1071 | "\n"); |
1072 | return 1; |
1073 | } |
1074 | |
1075 | static void |
1076 | update_units(void) |
1077 | { |
1078 | int cyl_units = g_heads * g_sectors; |
1079 | |
1080 | if (display_in_cyl_units && cyl_units) |
1081 | units_per_sector = cyl_units; |
1082 | else |
1083 | units_per_sector = 1; /* in sectors */ |
1084 | } |
1085 | |
1086 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1087 | static void |
1088 | warn_cylinders(void) |
1089 | { |
1090 | if (LABEL_IS_DOS && g_cylinders > 1024 && !nowarn) |
1091 | printf("\n" |
1092 | "The number of cylinders for this disk is set to %u.\n" |
1093 | "There is nothing wrong with that, but this is larger than 1024,\n" |
1094 | "and could in certain setups cause problems with:\n" |
1095 | "1) software that runs at boot time (e.g., old versions of LILO)\n" |
1096 | "2) booting and partitioning software from other OSs\n" |
1097 | " (e.g., DOS FDISK, OS/2 FDISK)\n", |
1098 | g_cylinders); |
1099 | } |
1100 | #endif |
1101 | |
1102 | static void |
1103 | read_extended(int ext) |
1104 | { |
1105 | int i; |
1106 | struct pte *pex; |
1107 | struct partition *p, *q; |
1108 | |
1109 | ext_index = ext; |
1110 | pex = &ptes[ext]; |
1111 | pex->ext_pointer = pex->part_table; |
1112 | |
1113 | p = pex->part_table; |
1114 | if (!get_start_sect(p)) { |
1115 | printf("Bad offset in primary extended partition\n"); |
1116 | return; |
1117 | } |
1118 | |
1119 | while (IS_EXTENDED(p->sys_ind)) { |
1120 | struct pte *pe = &ptes[g_partitions]; |
1121 | |
1122 | if (g_partitions >= MAXIMUM_PARTS) { |
1123 | /* This is not a Linux restriction, but |
1124 | this program uses arrays of size MAXIMUM_PARTS. |
1125 | Do not try to 'improve' this test. */ |
1126 | struct pte *pre = &ptes[g_partitions - 1]; |
1127 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1128 | printf("Warning: deleting partitions after %u\n", |
1129 | g_partitions); |
1130 | pre->changed = 1; |
1131 | #endif |
1132 | clear_partition(pre->ext_pointer); |
1133 | return; |
1134 | } |
1135 | |
1136 | read_pte(pe, extended_offset + get_start_sect(p)); |
1137 | |
1138 | if (!extended_offset) |
1139 | extended_offset = get_start_sect(p); |
1140 | |
1141 | q = p = pt_offset(pe->sectorbuffer, 0); |
1142 | for (i = 0; i < 4; i++, p++) if (get_nr_sects(p)) { |
1143 | if (IS_EXTENDED(p->sys_ind)) { |
1144 | if (pe->ext_pointer) |
1145 | printf("Warning: extra link " |
1146 | "pointer in partition table" |
1147 | " %u\n", g_partitions + 1); |
1148 | else |
1149 | pe->ext_pointer = p; |
1150 | } else if (p->sys_ind) { |
1151 | if (pe->part_table) |
1152 | printf("Warning: ignoring extra " |
1153 | "data in partition table" |
1154 | " %u\n", g_partitions + 1); |
1155 | else |
1156 | pe->part_table = p; |
1157 | } |
1158 | } |
1159 | |
1160 | /* very strange code here... */ |
1161 | if (!pe->part_table) { |
1162 | if (q != pe->ext_pointer) |
1163 | pe->part_table = q; |
1164 | else |
1165 | pe->part_table = q + 1; |
1166 | } |
1167 | if (!pe->ext_pointer) { |
1168 | if (q != pe->part_table) |
1169 | pe->ext_pointer = q; |
1170 | else |
1171 | pe->ext_pointer = q + 1; |
1172 | } |
1173 | |
1174 | p = pe->ext_pointer; |
1175 | g_partitions++; |
1176 | } |
1177 | |
1178 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1179 | /* remove empty links */ |
1180 | remove: |
1181 | for (i = 4; i < g_partitions; i++) { |
1182 | struct pte *pe = &ptes[i]; |
1183 | |
1184 | if (!get_nr_sects(pe->part_table) |
1185 | && (g_partitions > 5 || ptes[4].part_table->sys_ind) |
1186 | ) { |
1187 | printf("Omitting empty partition (%u)\n", i+1); |
1188 | delete_partition(i); |
1189 | goto remove; /* numbering changed */ |
1190 | } |
1191 | } |
1192 | #endif |
1193 | } |
1194 | |
1195 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1196 | static void |
1197 | create_doslabel(void) |
1198 | { |
1199 | printf(msg_building_new_label, "DOS disklabel"); |
1200 | |
1201 | current_label_type = LABEL_DOS; |
1202 | #if ENABLE_FEATURE_OSF_LABEL |
1203 | possibly_osf_label = 0; |
1204 | #endif |
1205 | g_partitions = 4; |
1206 | |
1207 | memset(&MBRbuffer[510 - 4*16], 0, 4*16); |
1208 | write_part_table_flag(MBRbuffer); |
1209 | extended_offset = 0; |
1210 | set_all_unchanged(); |
1211 | set_changed(0); |
1212 | get_boot(CREATE_EMPTY_DOS); |
1213 | } |
1214 | #endif |
1215 | |
1216 | static void |
1217 | get_sectorsize(void) |
1218 | { |
1219 | if (!user_set_sector_size) { |
1220 | int arg; |
1221 | if (ioctl(dev_fd, BLKSSZGET, &arg) == 0) |
1222 | sector_size = arg; |
1223 | if (sector_size != DEFAULT_SECTOR_SIZE) |
1224 | printf("Note: sector size is %u " |
1225 | "(not " DEFAULT_SECTOR_SIZE_STR ")\n", |
1226 | sector_size); |
1227 | } |
1228 | } |
1229 | |
1230 | static void |
1231 | get_kernel_geometry(void) |
1232 | { |
1233 | struct hd_geometry geometry; |
1234 | |
1235 | if (!ioctl(dev_fd, HDIO_GETGEO, &geometry)) { |
1236 | kern_heads = geometry.heads; |
1237 | kern_sectors = geometry.sectors; |
1238 | /* never use geometry.cylinders - it is truncated */ |
1239 | } |
1240 | } |
1241 | |
1242 | static void |
1243 | get_partition_table_geometry(void) |
1244 | { |
1245 | const unsigned char *bufp = (const unsigned char *)MBRbuffer; |
1246 | struct partition *p; |
1247 | int i, h, s, hh, ss; |
1248 | int first = 1; |
1249 | int bad = 0; |
1250 | |
1251 | if (!(valid_part_table_flag((char*)bufp))) |
1252 | return; |
1253 | |
1254 | hh = ss = 0; |
1255 | for (i = 0; i < 4; i++) { |
1256 | p = pt_offset(bufp, i); |
1257 | if (p->sys_ind != 0) { |
1258 | h = p->end_head + 1; |
1259 | s = (p->end_sector & 077); |
1260 | if (first) { |
1261 | hh = h; |
1262 | ss = s; |
1263 | first = 0; |
1264 | } else if (hh != h || ss != s) |
1265 | bad = 1; |
1266 | } |
1267 | } |
1268 | |
1269 | if (!first && !bad) { |
1270 | pt_heads = hh; |
1271 | pt_sectors = ss; |
1272 | } |
1273 | } |
1274 | |
1275 | static void |
1276 | get_geometry(void) |
1277 | { |
1278 | int sec_fac; |
1279 | |
1280 | get_sectorsize(); |
1281 | sec_fac = sector_size / 512; |
1282 | #if ENABLE_FEATURE_SUN_LABEL |
1283 | guess_device_type(); |
1284 | #endif |
1285 | g_heads = g_cylinders = g_sectors = 0; |
1286 | kern_heads = kern_sectors = 0; |
1287 | pt_heads = pt_sectors = 0; |
1288 | |
1289 | get_kernel_geometry(); |
1290 | get_partition_table_geometry(); |
1291 | |
1292 | g_heads = user_heads ? user_heads : |
1293 | pt_heads ? pt_heads : |
1294 | kern_heads ? kern_heads : 255; |
1295 | g_sectors = user_sectors ? user_sectors : |
1296 | pt_sectors ? pt_sectors : |
1297 | kern_sectors ? kern_sectors : 63; |
1298 | total_number_of_sectors = bb_BLKGETSIZE_sectors(dev_fd); |
1299 | |
1300 | sector_offset = 1; |
1301 | if (dos_compatible_flag) |
1302 | sector_offset = g_sectors; |
1303 | |
1304 | g_cylinders = total_number_of_sectors / (g_heads * g_sectors * sec_fac); |
1305 | if (!g_cylinders) |
1306 | g_cylinders = user_cylinders; |
1307 | } |
1308 | |
1309 | /* |
1310 | * Opens disk_device and optionally reads MBR. |
1311 | * FIXME: document what each 'what' value will do! |
1312 | * Returns: |
1313 | * -1: no 0xaa55 flag present (possibly entire disk BSD) |
1314 | * 0: found or created label |
1315 | * 1: I/O error |
1316 | */ |
1317 | #if ENABLE_FEATURE_SUN_LABEL || ENABLE_FEATURE_FDISK_WRITABLE |
1318 | static int get_boot(enum action what) |
1319 | #else |
1320 | static int get_boot(void) |
1321 | #define get_boot(what) get_boot() |
1322 | #endif |
1323 | { |
1324 | int i, fd; |
1325 | |
1326 | g_partitions = 4; |
1327 | for (i = 0; i < 4; i++) { |
1328 | struct pte *pe = &ptes[i]; |
1329 | pe->part_table = pt_offset(MBRbuffer, i); |
1330 | pe->ext_pointer = NULL; |
1331 | pe->offset_from_dev_start = 0; |
1332 | pe->sectorbuffer = MBRbuffer; |
1333 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1334 | pe->changed = (what == CREATE_EMPTY_DOS); |
1335 | #endif |
1336 | } |
1337 | |
1338 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1339 | // ALERT! highly idiotic design! |
1340 | // We end up here when we call get_boot() recursively |
1341 | // via get_boot() [table is bad] -> create_doslabel() -> get_boot(CREATE_EMPTY_DOS). |
1342 | // or get_boot() [table is bad] -> create_sunlabel() -> get_boot(CREATE_EMPTY_SUN). |
1343 | // (just factor out re-init of ptes[0,1,2,3] in a separate fn instead?) |
1344 | // So skip opening device _again_... |
1345 | if (what == CREATE_EMPTY_DOS IF_FEATURE_SUN_LABEL(|| what == CREATE_EMPTY_SUN)) |
1346 | goto created_table; |
1347 | |
1348 | fd = open(disk_device, (option_mask32 & OPT_l) ? O_RDONLY : O_RDWR); |
1349 | |
1350 | if (fd < 0) { |
1351 | fd = open(disk_device, O_RDONLY); |
1352 | if (fd < 0) { |
1353 | if (what == TRY_ONLY) |
1354 | return 1; |
1355 | fdisk_fatal(unable_to_open); |
1356 | } |
1357 | printf("'%s' is opened for read only\n", disk_device); |
1358 | } |
1359 | xmove_fd(fd, dev_fd); |
1360 | if (512 != full_read(dev_fd, MBRbuffer, 512)) { |
1361 | if (what == TRY_ONLY) { |
1362 | close_dev_fd(); |
1363 | return 1; |
1364 | } |
1365 | fdisk_fatal(unable_to_read); |
1366 | } |
1367 | #else |
1368 | fd = open(disk_device, O_RDONLY); |
1369 | if (fd < 0) |
1370 | return 1; |
1371 | if (512 != full_read(fd, MBRbuffer, 512)) { |
1372 | close(fd); |
1373 | return 1; |
1374 | } |
1375 | xmove_fd(fd, dev_fd); |
1376 | #endif |
1377 | |
1378 | get_geometry(); |
1379 | update_units(); |
1380 | |
1381 | #if ENABLE_FEATURE_SUN_LABEL |
1382 | if (check_sun_label()) |
1383 | return 0; |
1384 | #endif |
1385 | #if ENABLE_FEATURE_SGI_LABEL |
1386 | if (check_sgi_label()) |
1387 | return 0; |
1388 | #endif |
1389 | #if ENABLE_FEATURE_AIX_LABEL |
1390 | if (check_aix_label()) |
1391 | return 0; |
1392 | #endif |
1393 | #if ENABLE_FEATURE_OSF_LABEL |
1394 | if (check_osf_label()) { |
1395 | possibly_osf_label = 1; |
1396 | if (!valid_part_table_flag(MBRbuffer)) { |
1397 | current_label_type = LABEL_OSF; |
1398 | return 0; |
1399 | } |
1400 | printf("This disk has both DOS and BSD magic.\n" |
1401 | "Give the 'b' command to go to BSD mode.\n"); |
1402 | } |
1403 | #endif |
1404 | |
1405 | #if !ENABLE_FEATURE_FDISK_WRITABLE |
1406 | if (!valid_part_table_flag(MBRbuffer)) |
1407 | return -1; |
1408 | #else |
1409 | if (!valid_part_table_flag(MBRbuffer)) { |
1410 | if (what == OPEN_MAIN) { |
1411 | printf("Device contains neither a valid DOS " |
1412 | "partition table, nor Sun, SGI or OSF " |
1413 | "disklabel\n"); |
1414 | #ifdef __sparc__ |
1415 | IF_FEATURE_SUN_LABEL(create_sunlabel();) |
1416 | #else |
1417 | create_doslabel(); |
1418 | #endif |
1419 | return 0; |
1420 | } |
1421 | /* TRY_ONLY: */ |
1422 | return -1; |
1423 | } |
1424 | created_table: |
1425 | #endif /* FEATURE_FDISK_WRITABLE */ |
1426 | |
1427 | |
1428 | IF_FEATURE_FDISK_WRITABLE(warn_cylinders();) |
1429 | warn_geometry(); |
1430 | |
1431 | for (i = 0; i < 4; i++) { |
1432 | if (IS_EXTENDED(ptes[i].part_table->sys_ind)) { |
1433 | if (g_partitions != 4) |
1434 | printf("Ignoring extra extended " |
1435 | "partition %u\n", i + 1); |
1436 | else |
1437 | read_extended(i); |
1438 | } |
1439 | } |
1440 | |
1441 | for (i = 3; i < g_partitions; i++) { |
1442 | struct pte *pe = &ptes[i]; |
1443 | if (!valid_part_table_flag(pe->sectorbuffer)) { |
1444 | printf("Warning: invalid flag 0x%02x,0x%02x of partition " |
1445 | "table %u will be corrected by w(rite)\n", |
1446 | pe->sectorbuffer[510], |
1447 | pe->sectorbuffer[511], |
1448 | i + 1); |
1449 | IF_FEATURE_FDISK_WRITABLE(pe->changed = 1;) |
1450 | } |
1451 | } |
1452 | |
1453 | return 0; |
1454 | } |
1455 | |
1456 | #if ENABLE_FEATURE_FDISK_WRITABLE |
1457 | /* |
1458 | * Print the message MESG, then read an integer between LOW and HIGH (inclusive). |
1459 | * If the user hits Enter, DFLT is returned. |
1460 | * Answers like +10 are interpreted as offsets from BASE. |
1461 | * |
1462 | * There is no default if DFLT is not between LOW and HIGH. |
1463 | */ |
1464 | static sector_t |
1465 | read_int(sector_t low, sector_t dflt, sector_t high, sector_t base, const char *mesg) |
1466 | { |
1467 | sector_t value; |
1468 | int default_ok = 1; |
1469 | const char *fmt = "%s (%u-%u, default %u): "; |
1470 | |
1471 | if (dflt < low || dflt > high) { |
1472 | fmt = "%s (%u-%u): "; |
1473 | default_ok = 0; |
1474 | } |
1475 | |
1476 | while (1) { |
1477 | int use_default = default_ok; |
1478 | |
1479 | /* ask question and read answer */ |
1480 | do { |
1481 | printf(fmt, mesg, low, high, dflt); |
1482 | read_maybe_empty(""); |
1483 | } while (*line_ptr != '\n' && !isdigit(*line_ptr) |
1484 | && *line_ptr != '-' && *line_ptr != '+'); |
1485 | |
1486 | if (*line_ptr == '+' || *line_ptr == '-') { |
1487 | int minus = (*line_ptr == '-'); |
1488 | int absolute = 0; |
1489 | |
1490 | value = atoi(line_ptr + 1); |
1491 | |
1492 | /* (1) if 2nd char is digit, use_default = 0. |
1493 | * (2) move line_ptr to first non-digit. */ |
1494 | while (isdigit(*++line_ptr)) |
1495 | use_default = 0; |
1496 | |
1497 | switch (*line_ptr) { |
1498 | case 'c': |
1499 | case 'C': |
1500 | if (!display_in_cyl_units) |
1501 | value *= g_heads * g_sectors; |
1502 | break; |
1503 | case 'K': |
1504 | absolute = 1024; |
1505 | break; |
1506 | case 'k': |
1507 | absolute = 1000; |
1508 | break; |
1509 | case 'm': |
1510 | case 'M': |
1511 | absolute = 1000000; |
1512 | break; |
1513 | case 'g': |
1514 | case 'G': |
1515 | absolute = 1000000000; |
1516 | break; |
1517 | default: |
1518 | break; |
1519 | } |
1520 | if (absolute) { |
1521 | ullong bytes; |
1522 | unsigned long unit; |
1523 | |
1524 | bytes = (ullong) value * absolute; |
1525 | unit = sector_size * units_per_sector; |
1526 | bytes += unit/2; /* round */ |
1527 | bytes /= unit; |
1528 | value = bytes; |
1529 | } |
1530 | if (minus) |
1531 | value = -value; |
1532 | value += base; |
1533 | } else { |
1534 | value = atoi(line_ptr); |
1535 | while (isdigit(*line_ptr)) { |
1536 | line_ptr++; |
1537 | use_default = 0; |
1538 | } |
1539 | } |
1540 | if (use_default) { |
1541 | value = dflt; |
1542 | printf("Using default value %u\n", value); |
1543 | } |
1544 | if (value >= low && value <= high) |
1545 | break; |
1546 | printf("Value is out of range\n"); |
1547 | } |
1548 | return value; |
1549 | } |
1550 | |
1551 | static unsigned |
1552 | get_partition(int warn, unsigned max) |
1553 | { |
1554 | struct pte *pe; |
1555 | unsigned i; |
1556 | |
1557 | i = read_int(1, 0, max, 0, "Partition number") - 1; |
1558 | pe = &ptes[i]; |
1559 | |
1560 | if (warn) { |
1561 | if ((!LABEL_IS_SUN && !LABEL_IS_SGI && !pe->part_table->sys_ind) |
1562 | || (LABEL_IS_SUN && (!sunlabel->partitions[i].num_sectors || !sunlabel->infos[i].id)) |
1563 | || (LABEL_IS_SGI && !sgi_get_num_sectors(i)) |
1564 | ) { |
1565 | printf("Warning: partition %u has empty type\n", i+1); |
1566 | } |
1567 | } |
1568 | return i; |
1569 | } |
1570 | |
1571 | static int |
1572 | get_existing_partition(int warn, unsigned max) |
1573 | { |
1574 | int pno = -1; |
1575 | unsigned i; |
1576 | |
1577 | for (i = 0; i < max; i++) { |
1578 | struct pte *pe = &ptes[i]; |
1579 | struct partition *p = pe->part_table; |
1580 | |
1581 | if (p && !is_cleared_partition(p)) { |
1582 | if (pno >= 0) |
1583 | goto not_unique; |
1584 | pno = i; |
1585 | } |
1586 | } |
1587 | if (pno >= 0) { |
1588 | printf("Selected partition %u\n", pno+1); |
1589 | return pno; |
1590 | } |
1591 | printf("No partition is defined yet!\n"); |
1592 | return -1; |
1593 | |
1594 | not_unique: |
1595 | return get_partition(warn, max); |
1596 | } |
1597 | |
1598 | static int |
1599 | get_nonexisting_partition(int warn, unsigned max) |
1600 | { |
1601 | int pno = -1; |
1602 | unsigned i; |
1603 | |
1604 | for (i = 0; i < max; i++) { |
1605 | struct pte *pe = &ptes[i]; |
1606 | struct partition *p = pe->part_table; |
1607 | |
1608 | if (p && is_cleared_partition(p)) { |
1609 | if (pno >= 0) |
1610 | goto not_unique; |
1611 | pno = i; |
1612 | } |
1613 | } |
1614 | if (pno >= 0) { |
1615 | printf("Selected partition %u\n", pno+1); |
1616 | return pno; |
1617 | } |
1618 | printf("All primary partitions have been defined already!\n"); |
1619 | return -1; |
1620 | |
1621 | not_unique: |
1622 | return get_partition(warn, max); |
1623 | } |
1624 | |
1625 | |
1626 | static void |
1627 | change_units(void) |
1628 | { |
1629 | display_in_cyl_units = !display_in_cyl_units; |
1630 | update_units(); |
1631 | printf("Changing display/entry units to %s\n", |
1632 | str_units(PLURAL)); |
1633 | } |
1634 | |
1635 | static void |
1636 | toggle_active(int i) |
1637 | { |
1638 | struct pte *pe = &ptes[i]; |
1639 | struct partition *p = pe->part_table; |
1640 | |
1641 | if (IS_EXTENDED(p->sys_ind) && !p->boot_ind) |
1642 | printf("WARNING: Partition %u is an extended partition\n", i + 1); |
1643 | p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG); |
1644 | pe->changed = 1; |
1645 | } |
1646 | |
1647 | static void |
1648 | toggle_dos_compatibility_flag(void) |
1649 | { |
1650 | dos_compatible_flag = 1 - dos_compatible_flag; |
1651 | if (dos_compatible_flag) { |
1652 | sector_offset = g_sectors; |
1653 | printf("DOS Compatibility flag is set\n"); |
1654 | } else { |
1655 | sector_offset = 1; |
1656 | printf("DOS Compatibility flag is not set\n"); |
1657 | } |
1658 | } |
1659 | |
1660 | static void |
1661 | delete_partition(int i) |
1662 | { |
1663 | struct pte *pe = &ptes[i]; |
1664 | struct partition *p = pe->part_table; |
1665 | struct partition *q = pe->ext_pointer; |
1666 | |
1667 | /* Note that for the fifth partition (i == 4) we don't actually |
1668 | * decrement partitions. |
1669 | */ |
1670 | |
1671 | if (warn_geometry()) |
1672 | return; /* C/H/S not set */ |
1673 | pe->changed = 1; |
1674 | |
1675 | if (LABEL_IS_SUN) { |
1676 | sun_delete_partition(i); |
1677 | return; |
1678 | } |
1679 | if (LABEL_IS_SGI) { |
1680 | sgi_delete_partition(i); |
1681 | return; |
1682 | } |
1683 | |
1684 | if (i < 4) { |
1685 | if (IS_EXTENDED(p->sys_ind) && i == ext_index) { |
1686 | g_partitions = 4; |
1687 | ptes[ext_index].ext_pointer = NULL; |
1688 | extended_offset = 0; |
1689 | } |
1690 | clear_partition(p); |
1691 | return; |
1692 | } |
1693 | |
1694 | if (!q->sys_ind && i > 4) { |
1695 | /* the last one in the chain - just delete */ |
1696 | --g_partitions; |
1697 | --i; |
1698 | clear_partition(ptes[i].ext_pointer); |
1699 | ptes[i].changed = 1; |
1700 | } else { |
1701 | /* not the last one - further ones will be moved down */ |
1702 | if (i > 4) { |
1703 | /* delete this link in the chain */ |
1704 | p = ptes[i-1].ext_pointer; |
1705 | *p = *q; |
1706 | set_start_sect(p, get_start_sect(q)); |
1707 | set_nr_sects(p, get_nr_sects(q)); |
1708 | ptes[i-1].changed = 1; |
1709 | } else if (g_partitions > 5) { /* 5 will be moved to 4 */ |
1710 | /* the first logical in a longer chain */ |
1711 | pe = &ptes[5]; |
1712 | |
1713 | if (pe->part_table) /* prevent SEGFAULT */ |
1714 | set_start_sect(pe->part_table, |
1715 | get_partition_start_from_dev_start(pe) - |
1716 | extended_offset); |
1717 | pe->offset_from_dev_start = extended_offset; |
1718 | pe->changed = 1; |
1719 | } |
1720 | |
1721 | if (g_partitions > 5) { |
1722 | g_partitions--; |
1723 | while (i < g_partitions) { |
1724 | ptes[i] = ptes[i+1]; |
1725 | i++; |
1726 | } |
1727 | } else { |
1728 | /* the only logical: clear only */ |
1729 | clear_partition(ptes[i].part_table); |
1730 | } |
1731 | } |
1732 | } |
1733 | |
1734 | static void |
1735 | change_sysid(void) |
1736 | { |
1737 | int i, sys, origsys; |
1738 | struct partition *p; |
1739 | |
1740 | /* If sgi_label then don't use get_existing_partition, |
1741 | let the user select a partition, since get_existing_partition() |
1742 | only works for Linux like partition tables. */ |
1743 | if (!LABEL_IS_SGI) { |
1744 | i = get_existing_partition(0, g_partitions); |
1745 | } else { |
1746 | i = get_partition(0, g_partitions); |
1747 | } |
1748 | if (i == -1) |
1749 | return; |
1750 | p = ptes[i].part_table; |
1751 | origsys = sys = get_sysid(i); |
1752 | |
1753 | /* if changing types T to 0 is allowed, then |
1754 | the reverse change must be allowed, too */ |
1755 | if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN && !get_nr_sects(p)) { |
1756 | printf("Partition %u does not exist yet!\n", i + 1); |
1757 | return; |
1758 | } |
1759 | while (1) { |
1760 | sys = read_hex(get_sys_types()); |
1761 | |
1762 | if (!sys && !LABEL_IS_SGI && !LABEL_IS_SUN) { |
1763 | printf("Type 0 means free space to many systems\n" |
1764 | "(but not to Linux). Having partitions of\n" |
1765 | "type 0 is probably unwise.\n"); |
1766 | /* break; */ |
1767 | } |
1768 | |
1769 | if (!LABEL_IS_SUN && !LABEL_IS_SGI) { |
1770 | if (IS_EXTENDED(sys) != IS_EXTENDED(p->sys_ind)) { |
1771 | printf("You cannot change a partition into" |
1772 | " an extended one or vice versa\n"); |
1773 | break; |
1774 | } |
1775 | } |
1776 | |
1777 | if (sys < 256) { |
1778 | #if ENABLE_FEATURE_SUN_LABEL |
1779 | if (LABEL_IS_SUN && i == 2 && sys != SUN_WHOLE_DISK) |
1780 | printf("Consider leaving partition 3 " |
1781 | "as Whole disk (5),\n" |
1782 | "as SunOS/Solaris expects it and " |
1783 | "even Linux likes it\n\n"); |
1784 | #endif |
1785 | #if ENABLE_FEATURE_SGI_LABEL |
1786 | if (LABEL_IS_SGI && |
1787 | ( |
1788 | (i == 10 && sys != SGI_ENTIRE_DISK) || |
1789 | (i == 8 && sys != 0) |
1790 | ) |
1791 | ) { |
1792 | printf("Consider leaving partition 9 " |
1793 | "as volume header (0),\nand " |
1794 | "partition 11 as entire volume (6)" |
1795 | "as IRIX expects it\n\n"); |
1796 | } |
1797 | #endif |
1798 | if (sys == origsys) |
1799 | break; |
1800 | if (LABEL_IS_SUN) { |
1801 | sun_change_sysid(i, sys); |
1802 | } else if (LABEL_IS_SGI) { |
1803 | sgi_change_sysid(i, sys); |
1804 | } else |
1805 | p->sys_ind = sys; |
1806 | |
1807 | printf("Changed system type of partition %u " |
1808 | "to %x (%s)\n", i + 1, sys, |
1809 | partition_type(sys)); |
1810 | ptes[i].changed = 1; |
1811 | //if (is_dos_partition(origsys) || is_dos_partition(sys)) |
1812 | // dos_changed = 1; |
1813 | break; |
1814 | } |
1815 | } |
1816 | } |
1817 | #endif /* FEATURE_FDISK_WRITABLE */ |
1818 | |
1819 | |
1820 | /* check_consistency() and linear2chs() added Sat Mar 6 12:28:16 1993, |
1821 | * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross, |
1822 | * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S. |
1823 | * Lubkin Oct. 1991). */ |
1824 | |
1825 | static void |
1826 | linear2chs(unsigned ls, unsigned *c, unsigned *h, unsigned *s) |
1827 | { |
1828 | int spc = g_heads * g_sectors; |
1829 | |
1830 | *c = ls / spc; |
1831 | ls = ls % spc; |
1832 | *h = ls / g_sectors; |
1833 | *s = ls % g_sectors + 1; /* sectors count from 1 */ |
1834 | } |
1835 | |
1836 | static void |
1837 | check_consistency(const struct partition *p, int partition) |
1838 | { |
1839 | unsigned pbc, pbh, pbs; /* physical beginning c, h, s */ |
1840 | unsigned pec, peh, pes; /* physical ending c, h, s */ |
1841 | unsigned lbc, lbh, lbs; /* logical beginning c, h, s */ |
1842 | unsigned lec, leh, les; /* logical ending c, h, s */ |
1843 | |
1844 | if (!g_heads || !g_sectors || (partition >= 4)) |
1845 | return; /* do not check extended partitions */ |
1846 | |
1847 | /* physical beginning c, h, s */ |
1848 | pbc = (p->cyl & 0xff) | ((p->sector << 2) & 0x300); |
1849 | pbh = p->head; |
1850 | pbs = p->sector & 0x3f; |
1851 | |
1852 | /* physical ending c, h, s */ |
1853 | pec = (p->end_cyl & 0xff) | ((p->end_sector << 2) & 0x300); |
1854 | peh = p->end_head; |
1855 | pes = p->end_sector & 0x3f; |
1856 | |
1857 | /* compute logical beginning (c, h, s) */ |
1858 | linear2chs(get_start_sect(p), &lbc, &lbh, &lbs); |
1859 | |
1860 | /* compute logical ending (c, h, s) */ |
1861 | linear2chs(get_start_sect(p) + get_nr_sects(p) - 1, &lec, &leh, &les); |
1862 | |
1863 | /* Same physical / logical beginning? */ |
1864 | if (g_cylinders <= 1024 && (pbc != lbc || pbh != lbh || pbs != lbs)) { |
1865 | printf("Partition %u has different physical/logical " |
1866 | "beginnings (non-Linux?):\n", partition + 1); |
1867 | printf(" phys=(%u, %u, %u) ", pbc, pbh, pbs); |
1868 | printf("logical=(%u, %u, %u)\n", lbc, lbh, lbs); |
1869 | } |
1870 | |
1871 | /* Same physical / logical ending? */ |
1872 | if (g_cylinders <= 1024 && (pec != lec || peh != leh || pes != les)) { |
1873 | printf("Partition %u has different physical/logical " |
1874 | "endings:\n", partition + 1); |
1875 | printf(" phys=(%u, %u, %u) ", pec, peh, pes); |
1876 | printf("logical=(%u, %u, %u)\n", lec, leh, les); |
1877 | } |
1878 | |
1879 | /* Ending on cylinder boundary? */ |
1880 | if (peh != (g_heads - 1) || pes != g_sectors) { |
1881 | printf("Partition %u does not end on cylinder boundary\n", |
1882 | partition + 1); |
1883 | } |
1884 | } |
1885 | |
1886 | static void |
1887 | list_disk_geometry(void) |
1888 | { |
1889 | ullong bytes = ((ullong)total_number_of_sectors << 9); |
1890 | long megabytes = bytes / 1000000; |
1891 | |
1892 | if (megabytes < 10000) |
1893 | printf("\nDisk %s: %lu MB, %llu bytes\n", |
1894 | disk_device, megabytes, bytes); |
1895 | else |
1896 | printf("\nDisk %s: %lu.%lu GB, %llu bytes\n", |
1897 | disk_device, megabytes/1000, (megabytes/100)%10, bytes); |
1898 | printf("%u heads, %u sectors/track, %u cylinders", |
1899 | g_heads, g_sectors, g_cylinders); |
1900 | if (units_per_sector == 1) |
1901 | printf(", total %"SECT_FMT"u sectors", |
1902 | total_number_of_sectors / (sector_size/512)); |
1903 | printf("\nUnits = %s of %u * %u = %u bytes\n\n", |
1904 | str_units(PLURAL), |
1905 | units_per_sector, sector_size, units_per_sector * sector_size); |
1906 | } |
1907 | |
1908 | /* |
1909 | * Check whether partition entries are ordered by their starting positions. |
1910 | * Return 0 if OK. Return i if partition i should have been earlier. |
1911 | * Two separate checks: primary and logical partitions. |
1912 | */ |
1913 | static int |
1914 | wrong_p_order(int *prev) |
1915 | { |
1916 | const struct pte *pe; |
1917 | const struct partition *p; |
1918 | sector_t last_p_start_pos = 0, p_start_pos; |
1919 | unsigned i, last_i = 0; |
1920 | |
1921 | for (i = 0; i < g_partitions; i++) { |
1922 | if (i == 4) { |
1923 | last_i = 4; |
1924 | last_p_start_pos = 0; |
1925 | } |
1926 | pe = &ptes[i]; |
1927 | p = pe->part_table; |
1928 | if (p->sys_ind) { |
1929 | p_start_pos = get_partition_start_from_dev_start(pe); |
1930 | |
1931 | if (last_p_start_pos > p_start_pos) { |
1932 | if (prev) |
1933 | *prev = last_i; |
1934 | return i; |
1935 | } |
1936 | |
1937 | last_p_start_pos = p_start_pos; |
1938 | last_i = i; |
1939 | } |
1940 | } |
1941 | return 0; |
1942 | } |
1943 | |
1944 | #if ENABLE_FEATURE_FDISK_ADVANCED |
1945 | /* |
1946 | * Fix the chain of logicals. |
1947 | * extended_offset is unchanged, the set of sectors used is unchanged |
1948 | * The chain is sorted so that sectors increase, and so that |
1949 | * starting sectors increase. |
1950 | * |
1951 | * After this it may still be that cfdisk doesnt like the table. |
1952 | * (This is because cfdisk considers expanded parts, from link to |
1953 | * end of partition, and these may still overlap.) |
1954 | * Now |
1955 | * sfdisk /dev/hda > ohda; sfdisk /dev/hda < ohda |
1956 | * may help. |
1957 | */ |
1958 | static void |
1959 | fix_chain_of_logicals(void) |
1960 | { |
1961 | int j, oj, ojj, sj, sjj; |
1962 | struct partition *pj,*pjj,tmp; |
1963 | |
1964 | /* Stage 1: sort sectors but leave sector of part 4 */ |
1965 | /* (Its sector is the global extended_offset.) */ |
1966 | stage1: |
1967 | for (j = 5; j < g_partitions - 1; j++) { |
1968 | oj = ptes[j].offset_from_dev_start; |
1969 | ojj = ptes[j+1].offset_from_dev_start; |
1970 | if (oj > ojj) { |
1971 | ptes[j].offset_from_dev_start = ojj; |
1972 | ptes[j+1].offset_from_dev_start = oj; |
1973 | pj = ptes[j].part_table; |
1974 | set_start_sect(pj, get_start_sect(pj)+oj-ojj); |
1975 | pjj = ptes[j+1].part_table; |
1976 | set_start_sect(pjj, get_start_sect(pjj)+ojj-oj); |
1977 | set_start_sect(ptes[j-1].ext_pointer, |
1978 | ojj-extended_offset); |
1979 | set_start_sect(ptes[j].ext_pointer, |
1980 | oj-extended_offset); |
1981 | goto stage1; |
1982 | } |
1983 | } |
1984 | |
1985 | /* Stage 2: sort starting sectors */ |
1986 | stage2: |
1987 | for (j = 4; j < g_partitions - 1; j++) { |
1988 | pj = ptes[j].part_table; |
1989 | pjj = ptes[j+1].part_table; |
1990 | sj = get_start_sect(pj); |
1991 | sjj = get_start_sect(pjj); |
1992 | oj = ptes[j].offset_from_dev_start; |
1993 | ojj = ptes[j+1].offset_from_dev_start; |
1994 | if (oj+sj > ojj+sjj) { |
1995 | tmp = *pj; |
1996 | *pj = *pjj; |
1997 | *pjj = tmp; |
1998 | set_start_sect(pj, ojj+sjj-oj); |
1999 | set_start_sect(pjj, oj+sj-ojj); |
2000 | goto stage2; |
2001 | } |
2002 | } |
2003 | |
2004 | /* Probably something was changed */ |
2005 | for (j = 4; j < g_partitions; j++) |
2006 | ptes[j].changed = 1; |
2007 | } |
2008 | |
2009 | |
2010 | static void |
2011 | fix_partition_table_order(void) |
2012 | { |
2013 | struct pte *pei, *pek; |
2014 | int i,k; |
2015 | |
2016 | if (!wrong_p_order(NULL)) { |
2017 | printf("Ordering is already correct\n\n"); |
2018 | return; |
2019 | } |
2020 | |
2021 | while ((i = wrong_p_order(&k)) != 0 && i < 4) { |
2022 | /* partition i should have come earlier, move it */ |
2023 | /* We have to move data in the MBR */ |
2024 | struct partition *pi, *pk, *pe, pbuf; |
2025 | pei = &ptes[i]; |
2026 | pek = &ptes[k]; |
2027 | |
2028 | pe = pei->ext_pointer; |
2029 | pei->ext_pointer = pek->ext_pointer; |
2030 | pek->ext_pointer = pe; |
2031 | |
2032 | pi = pei->part_table; |
2033 | pk = pek->part_table; |
2034 | |
2035 | memmove(&pbuf, pi, sizeof(struct partition)); |
2036 | memmove(pi, pk, sizeof(struct partition)); |
2037 | memmove(pk, &pbuf, sizeof(struct partition)); |
2038 | |
2039 | pei->changed = pek->changed = 1; |
2040 | } |
2041 | |
2042 | if (i) |
2043 | fix_chain_of_logicals(); |
2044 | |
2045 | printf("Done.\n"); |
2046 | |
2047 | } |
2048 | #endif |
2049 | |
2050 | static void |
2051 | list_table(int xtra) |
2052 | { |
2053 | const struct partition *p; |
2054 | int i, w; |
2055 | |
2056 | if (LABEL_IS_SUN) { |
2057 | sun_list_table(xtra); |
2058 | return; |
2059 | } |
2060 | if (LABEL_IS_SUN) { |
2061 | sgi_list_table(xtra); |
2062 | return; |
2063 | } |
2064 | |
2065 | list_disk_geometry(); |
2066 | |
2067 | if (LABEL_IS_OSF) { |
2068 | xbsd_print_disklabel(xtra); |
2069 | return; |
2070 | } |
2071 | |
2072 | /* Heuristic: we list partition 3 of /dev/foo as /dev/foo3, |
2073 | but if the device name ends in a digit, say /dev/foo1, |
2074 | then the partition is called /dev/foo1p3. */ |
2075 | w = strlen(disk_device); |
2076 | if (w && isdigit(disk_device[w-1])) |
2077 | w++; |
2078 | if (w < 5) |
2079 | w = 5; |
2080 | |
2081 | // 1 12345678901 12345678901 12345678901 12 |
2082 | printf("%*s Boot Start End Blocks Id System\n", |
2083 | w+1, "Device"); |
2084 | |
2085 | for (i = 0; i < g_partitions; i++) { |
2086 | const struct pte *pe = &ptes[i]; |
2087 | sector_t psects; |
2088 | sector_t pblocks; |
2089 | unsigned podd; |
2090 | |
2091 | p = pe->part_table; |
2092 | if (!p || is_cleared_partition(p)) |
2093 | continue; |
2094 | |
2095 | psects = get_nr_sects(p); |
2096 | pblocks = psects; |
2097 | podd = 0; |
2098 | |
2099 | if (sector_size < 1024) { |
2100 | pblocks /= (1024 / sector_size); |
2101 | podd = psects % (1024 / sector_size); |
2102 | } |
2103 | if (sector_size > 1024) |
2104 | pblocks *= (sector_size / 1024); |
2105 | |
2106 | printf("%s %c %11"SECT_FMT"u %11"SECT_FMT"u %11"SECT_FMT"u%c %2x %s\n", |
2107 | partname(disk_device, i+1, w+2), |
2108 | !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG /* boot flag */ |
2109 | ? '*' : '?', |
2110 | cround(get_partition_start_from_dev_start(pe)), /* start */ |
2111 | cround(get_partition_start_from_dev_start(pe) + psects /* end */ |
2112 | - (psects ? 1 : 0)), |
2113 | pblocks, podd ? '+' : ' ', /* odd flag on end */ |
2114 | p->sys_ind, /* type id */ |
2115 | partition_type(p->sys_ind)); /* type name */ |
2116 | |
2117 | check_consistency(p, i); |
2118 | } |
2119 | |
2120 | /* Is partition table in disk order? It need not be, but... */ |
2121 | /* partition table entries are not checked for correct order |
2122 | * if this is a sgi, sun or aix labeled disk... */ |
2123 | if (LABEL_IS_DOS && wrong_p_order(NULL)) { |
2124 | /* FIXME */ |
2125 | printf("\nPartition table entries are not in disk order\n"); |
2126 | } |
2127 | } |
2128 | |
2129 | #if ENABLE_FEATURE_FDISK_ADVANCED |
2130 | static void |
2131 | x_list_table(int extend) |
2132 | { |
2133 | const struct pte *pe; |
2134 | const struct partition *p; |
2135 | int i; |
2136 | |
2137 | printf("\nDisk %s: %u heads, %u sectors, %u cylinders\n\n", |
2138 | disk_device, g_heads, g_sectors, g_cylinders); |
2139 | printf("Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID\n"); |
2140 | for (i = 0; i < g_partitions; i++) { |
2141 | pe = &ptes[i]; |
2142 | p = (extend ? pe->ext_pointer : pe->part_table); |
2143 | if (p != NULL) { |
2144 | printf("%2u %02x%4u%4u%5u%4u%4u%5u%11"SECT_FMT"u%11"SECT_FMT"u %02x\n", |
2145 | i + 1, p->boot_ind, p->head, |
2146 | sector(p->sector), |
2147 | cylinder(p->sector, p->cyl), p->end_head, |
2148 | sector(p->end_sector), |
2149 | cylinder(p->end_sector, p->end_cyl), |
2150 | get_start_sect(p), get_nr_sects(p), |
2151 | p->sys_ind); |
2152 | if (p->sys_ind) |
2153 | check_consistency(p, i); |
2154 | } |
2155 | } |
2156 | } |
2157 | #endif |
2158 | |
2159 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2160 | static void |
2161 | fill_bounds(sector_t *first, sector_t *last) |
2162 | { |
2163 | unsigned i; |
2164 | const struct pte *pe = &ptes[0]; |
2165 | const struct partition *p; |
2166 | |
2167 | for (i = 0; i < g_partitions; pe++,i++) { |
2168 | p = pe->part_table; |
2169 | if (!p->sys_ind || IS_EXTENDED(p->sys_ind)) { |
2170 | first[i] = 0xffffffff; |
2171 | last[i] = 0; |
2172 | } else { |
2173 | first[i] = get_partition_start_from_dev_start(pe); |
2174 | last[i] = first[i] + get_nr_sects(p) - 1; |
2175 | } |
2176 | } |
2177 | } |
2178 | |
2179 | static void |
2180 | check(int n, unsigned h, unsigned s, unsigned c, sector_t start) |
2181 | { |
2182 | sector_t total, real_s, real_c; |
2183 | |
2184 | real_s = sector(s) - 1; |
2185 | real_c = cylinder(s, c); |
2186 | total = (real_c * g_sectors + real_s) * g_heads + h; |
2187 | if (!total) |
2188 | printf("Partition %u contains sector 0\n", n); |
2189 | if (h >= g_heads) |
2190 | printf("Partition %u: head %u greater than maximum %u\n", |
2191 | n, h + 1, g_heads); |
2192 | if (real_s >= g_sectors) |
2193 | printf("Partition %u: sector %u greater than " |
2194 | "maximum %u\n", n, s, g_sectors); |
2195 | if (real_c >= g_cylinders) |
2196 | printf("Partition %u: cylinder %"SECT_FMT"u greater than " |
2197 | "maximum %u\n", n, real_c + 1, g_cylinders); |
2198 | if (g_cylinders <= 1024 && start != total) |
2199 | printf("Partition %u: previous sectors %"SECT_FMT"u disagrees with " |
2200 | "total %"SECT_FMT"u\n", n, start, total); |
2201 | } |
2202 | |
2203 | static void |
2204 | verify(void) |
2205 | { |
2206 | int i, j; |
2207 | sector_t total = 1; |
2208 | sector_t first[g_partitions], last[g_partitions]; |
2209 | struct partition *p; |
2210 | |
2211 | if (warn_geometry()) |
2212 | return; |
2213 | |
2214 | if (LABEL_IS_SUN) { |
2215 | verify_sun(); |
2216 | return; |
2217 | } |
2218 | if (LABEL_IS_SGI) { |
2219 | verify_sgi(1); |
2220 | return; |
2221 | } |
2222 | |
2223 | fill_bounds(first, last); |
2224 | for (i = 0; i < g_partitions; i++) { |
2225 | struct pte *pe = &ptes[i]; |
2226 | |
2227 | p = pe->part_table; |
2228 | if (p->sys_ind && !IS_EXTENDED(p->sys_ind)) { |
2229 | check_consistency(p, i); |
2230 | if (get_partition_start_from_dev_start(pe) < first[i]) |
2231 | printf("Warning: bad start-of-data in " |
2232 | "partition %u\n", i + 1); |
2233 | check(i + 1, p->end_head, p->end_sector, p->end_cyl, |
2234 | last[i]); |
2235 | total += last[i] + 1 - first[i]; |
2236 | for (j = 0; j < i; j++) { |
2237 | if ((first[i] >= first[j] && first[i] <= last[j]) |
2238 | || ((last[i] <= last[j] && last[i] >= first[j]))) { |
2239 | printf("Warning: partition %u overlaps " |
2240 | "partition %u\n", j + 1, i + 1); |
2241 | total += first[i] >= first[j] ? |
2242 | first[i] : first[j]; |
2243 | total -= last[i] <= last[j] ? |
2244 | last[i] : last[j]; |
2245 | } |
2246 | } |
2247 | } |
2248 | } |
2249 | |
2250 | if (extended_offset) { |
2251 | struct pte *pex = &ptes[ext_index]; |
2252 | sector_t e_last = get_start_sect(pex->part_table) + |
2253 | get_nr_sects(pex->part_table) - 1; |
2254 | |
2255 | for (i = 4; i < g_partitions; i++) { |
2256 | total++; |
2257 | p = ptes[i].part_table; |
2258 | if (!p->sys_ind) { |
2259 | if (i != 4 || i + 1 < g_partitions) |
2260 | printf("Warning: partition %u " |
2261 | "is empty\n", i + 1); |
2262 | } else if (first[i] < extended_offset || last[i] > e_last) { |
2263 | printf("Logical partition %u not entirely in " |
2264 | "partition %u\n", i + 1, ext_index + 1); |
2265 | } |
2266 | } |
2267 | } |
2268 | |
2269 | if (total > g_heads * g_sectors * g_cylinders) |
2270 | printf("Total allocated sectors %u greater than the maximum " |
2271 | "%u\n", total, g_heads * g_sectors * g_cylinders); |
2272 | else { |
2273 | total = g_heads * g_sectors * g_cylinders - total; |
2274 | if (total != 0) |
2275 | printf("%"SECT_FMT"u unallocated sectors\n", total); |
2276 | } |
2277 | } |
2278 | |
2279 | static void |
2280 | add_partition(int n, int sys) |
2281 | { |
2282 | char mesg[256]; /* 48 does not suffice in Japanese */ |
2283 | int i, num_read = 0; |
2284 | struct partition *p = ptes[n].part_table; |
2285 | struct partition *q = ptes[ext_index].part_table; |
2286 | sector_t limit, temp; |
2287 | sector_t start, stop = 0; |
2288 | sector_t first[g_partitions], last[g_partitions]; |
2289 | |
2290 | if (p && p->sys_ind) { |
2291 | printf(msg_part_already_defined, n + 1); |
2292 | return; |
2293 | } |
2294 | fill_bounds(first, last); |
2295 | if (n < 4) { |
2296 | start = sector_offset; |
2297 | if (display_in_cyl_units || !total_number_of_sectors) |
2298 | limit = (sector_t) g_heads * g_sectors * g_cylinders - 1; |
2299 | else |
2300 | limit = total_number_of_sectors - 1; |
2301 | if (extended_offset) { |
2302 | first[ext_index] = extended_offset; |
2303 | last[ext_index] = get_start_sect(q) + |
2304 | get_nr_sects(q) - 1; |
2305 | } |
2306 | } else { |
2307 | start = extended_offset + sector_offset; |
2308 | limit = get_start_sect(q) + get_nr_sects(q) - 1; |
2309 | } |
2310 | if (display_in_cyl_units) |
2311 | for (i = 0; i < g_partitions; i++) |
2312 | first[i] = (cround(first[i]) - 1) * units_per_sector; |
2313 | |
2314 | snprintf(mesg, sizeof(mesg), "First %s", str_units(SINGULAR)); |
2315 | do { |
2316 | temp = start; |
2317 | for (i = 0; i < g_partitions; i++) { |
2318 | int lastplusoff; |
2319 | |
2320 | if (start == ptes[i].offset_from_dev_start) |
2321 | start += sector_offset; |
2322 | lastplusoff = last[i] + ((n < 4) ? 0 : sector_offset); |
2323 | if (start >= first[i] && start <= lastplusoff) |
2324 | start = lastplusoff + 1; |
2325 | } |
2326 | if (start > limit) |
2327 | break; |
2328 | if (start >= temp+units_per_sector && num_read) { |
2329 | printf("Sector %"SECT_FMT"u is already allocated\n", temp); |
2330 | temp = start; |
2331 | num_read = 0; |
2332 | } |
2333 | if (!num_read && start == temp) { |
2334 | sector_t saved_start; |
2335 | |
2336 | saved_start = start; |
2337 | start = read_int(cround(saved_start), cround(saved_start), cround(limit), 0, mesg); |
2338 | if (display_in_cyl_units) { |
2339 | start = (start - 1) * units_per_sector; |
2340 | if (start < saved_start) |
2341 | start = saved_start; |
2342 | } |
2343 | num_read = 1; |
2344 | } |
2345 | } while (start != temp || !num_read); |
2346 | if (n > 4) { /* NOT for fifth partition */ |
2347 | struct pte *pe = &ptes[n]; |
2348 | |
2349 | pe->offset_from_dev_start = start - sector_offset; |
2350 | if (pe->offset_from_dev_start == extended_offset) { /* must be corrected */ |
2351 | pe->offset_from_dev_start++; |
2352 | if (sector_offset == 1) |
2353 | start++; |
2354 | } |
2355 | } |
2356 | |
2357 | for (i = 0; i < g_partitions; i++) { |
2358 | struct pte *pe = &ptes[i]; |
2359 | |
2360 | if (start < pe->offset_from_dev_start && limit >= pe->offset_from_dev_start) |
2361 | limit = pe->offset_from_dev_start - 1; |
2362 | if (start < first[i] && limit >= first[i]) |
2363 | limit = first[i] - 1; |
2364 | } |
2365 | if (start > limit) { |
2366 | printf("No free sectors available\n"); |
2367 | if (n > 4) |
2368 | g_partitions--; |
2369 | return; |
2370 | } |
2371 | if (cround(start) == cround(limit)) { |
2372 | stop = limit; |
2373 | } else { |
2374 | snprintf(mesg, sizeof(mesg), |
2375 | "Last %s or +size or +sizeM or +sizeK", |
2376 | str_units(SINGULAR)); |
2377 | stop = read_int(cround(start), cround(limit), cround(limit), cround(start), mesg); |
2378 | if (display_in_cyl_units) { |
2379 | stop = stop * units_per_sector - 1; |
2380 | if (stop >limit) |
2381 | stop = limit; |
2382 | } |
2383 | } |
2384 | |
2385 | set_partition(n, 0, start, stop, sys); |
2386 | if (n > 4) |
2387 | set_partition(n - 1, 1, ptes[n].offset_from_dev_start, stop, EXTENDED); |
2388 | |
2389 | if (IS_EXTENDED(sys)) { |
2390 | struct pte *pe4 = &ptes[4]; |
2391 | struct pte *pen = &ptes[n]; |
2392 | |
2393 | ext_index = n; |
2394 | pen->ext_pointer = p; |
2395 | pe4->offset_from_dev_start = extended_offset = start; |
2396 | pe4->sectorbuffer = xzalloc(sector_size); |
2397 | pe4->part_table = pt_offset(pe4->sectorbuffer, 0); |
2398 | pe4->ext_pointer = pe4->part_table + 1; |
2399 | pe4->changed = 1; |
2400 | g_partitions = 5; |
2401 | } |
2402 | } |
2403 | |
2404 | static void |
2405 | add_logical(void) |
2406 | { |
2407 | if (g_partitions > 5 || ptes[4].part_table->sys_ind) { |
2408 | struct pte *pe = &ptes[g_partitions]; |
2409 | |
2410 | pe->sectorbuffer = xzalloc(sector_size); |
2411 | pe->part_table = pt_offset(pe->sectorbuffer, 0); |
2412 | pe->ext_pointer = pe->part_table + 1; |
2413 | pe->offset_from_dev_start = 0; |
2414 | pe->changed = 1; |
2415 | g_partitions++; |
2416 | } |
2417 | add_partition(g_partitions - 1, LINUX_NATIVE); |
2418 | } |
2419 | |
2420 | static void |
2421 | new_partition(void) |
2422 | { |
2423 | int i, free_primary = 0; |
2424 | |
2425 | if (warn_geometry()) |
2426 | return; |
2427 | |
2428 | if (LABEL_IS_SUN) { |
2429 | add_sun_partition(get_partition(0, g_partitions), LINUX_NATIVE); |
2430 | return; |
2431 | } |
2432 | if (LABEL_IS_SGI) { |
2433 | sgi_add_partition(get_partition(0, g_partitions), LINUX_NATIVE); |
2434 | return; |
2435 | } |
2436 | if (LABEL_IS_AIX) { |
2437 | printf("Sorry - this fdisk cannot handle AIX disk labels.\n" |
2438 | "If you want to add DOS-type partitions, create a new empty DOS partition\n" |
2439 | "table first (use 'o'). This will destroy the present disk contents.\n"); |
2440 | return; |
2441 | } |
2442 | |
2443 | for (i = 0; i < 4; i++) |
2444 | free_primary += !ptes[i].part_table->sys_ind; |
2445 | |
2446 | if (!free_primary && g_partitions >= MAXIMUM_PARTS) { |
2447 | printf("The maximum number of partitions has been created\n"); |
2448 | return; |
2449 | } |
2450 | |
2451 | if (!free_primary) { |
2452 | if (extended_offset) |
2453 | add_logical(); |
2454 | else |
2455 | printf("You must delete some partition and add " |
2456 | "an extended partition first\n"); |
2457 | } else { |
2458 | char c, line[80]; |
2459 | snprintf(line, sizeof(line), |
2460 | "Command action\n" |
2461 | " %s\n" |
2462 | " p primary partition (1-4)\n", |
2463 | (extended_offset ? |
2464 | "l logical (5 or over)" : "e extended")); |
2465 | while (1) { |
2466 | c = read_nonempty(line); |
2467 | if ((c | 0x20) == 'p') { |
2468 | i = get_nonexisting_partition(0, 4); |
2469 | if (i >= 0) |
2470 | add_partition(i, LINUX_NATIVE); |
2471 | return; |
2472 | } |
2473 | if (c == 'l' && extended_offset) { |
2474 | add_logical(); |
2475 | return; |
2476 | } |
2477 | if (c == 'e' && !extended_offset) { |
2478 | i = get_nonexisting_partition(0, 4); |
2479 | if (i >= 0) |
2480 | add_partition(i, EXTENDED); |
2481 | return; |
2482 | } |
2483 | printf("Invalid partition number " |
2484 | "for type '%c'\n", c); |
2485 | } |
2486 | } |
2487 | } |
2488 | |
2489 | static void |
2490 | write_table(void) |
2491 | { |
2492 | int i; |
2493 | |
2494 | if (LABEL_IS_DOS) { |
2495 | for (i = 0; i < 3; i++) |
2496 | if (ptes[i].changed) |
2497 | ptes[3].changed = 1; |
2498 | for (i = 3; i < g_partitions; i++) { |
2499 | struct pte *pe = &ptes[i]; |
2500 | |
2501 | if (pe->changed) { |
2502 | write_part_table_flag(pe->sectorbuffer); |
2503 | write_sector(pe->offset_from_dev_start, pe->sectorbuffer); |
2504 | } |
2505 | } |
2506 | } |
2507 | else if (LABEL_IS_SGI) { |
2508 | /* no test on change? the printf below might be mistaken */ |
2509 | sgi_write_table(); |
2510 | } |
2511 | else if (LABEL_IS_SUN) { |
2512 | int needw = 0; |
2513 | |
2514 | for (i = 0; i < 8; i++) |
2515 | if (ptes[i].changed) |
2516 | needw = 1; |
2517 | if (needw) |
2518 | sun_write_table(); |
2519 | } |
2520 | |
2521 | printf("The partition table has been altered!\n\n"); |
2522 | reread_partition_table(1); |
2523 | } |
2524 | |
2525 | static void |
2526 | reread_partition_table(int leave) |
2527 | { |
2528 | int i; |
2529 | |
2530 | printf("Calling ioctl() to re-read partition table\n"); |
2531 | sync(); |
2532 | /* sleep(2); Huh? */ |
2533 | i = ioctl_or_perror(dev_fd, BLKRRPART, NULL, |
2534 | "WARNING: rereading partition table " |
2535 | "failed, kernel still uses old table"); |
2536 | #if 0 |
2537 | if (dos_changed) |
2538 | printf( |
2539 | "\nWARNING: If you have created or modified any DOS 6.x\n" |
2540 | "partitions, please see the fdisk manual page for additional\n" |
2541 | "information\n"); |
2542 | #endif |
2543 | |
2544 | if (leave) { |
2545 | if (ENABLE_FEATURE_CLEAN_UP) |
2546 | close_dev_fd(); |
2547 | exit(i != 0); |
2548 | } |
2549 | } |
2550 | #endif /* FEATURE_FDISK_WRITABLE */ |
2551 | |
2552 | #if ENABLE_FEATURE_FDISK_ADVANCED |
2553 | #define MAX_PER_LINE 16 |
2554 | static void |
2555 | print_buffer(char *pbuffer) |
2556 | { |
2557 | int i,l; |
2558 | |
2559 | for (i = 0, l = 0; i < sector_size; i++, l++) { |
2560 | if (l == 0) |
2561 | printf("0x%03X:", i); |
2562 | printf(" %02X", (unsigned char) pbuffer[i]); |
2563 | if (l == MAX_PER_LINE - 1) { |
2564 | bb_putchar('\n'); |
2565 | l = -1; |
2566 | } |
2567 | } |
2568 | if (l > 0) |
2569 | bb_putchar('\n'); |
2570 | bb_putchar('\n'); |
2571 | } |
2572 | |
2573 | static void |
2574 | print_raw(void) |
2575 | { |
2576 | int i; |
2577 | |
2578 | printf("Device: %s\n", disk_device); |
2579 | if (LABEL_IS_SGI || LABEL_IS_SUN) |
2580 | print_buffer(MBRbuffer); |
2581 | else { |
2582 | for (i = 3; i < g_partitions; i++) |
2583 | print_buffer(ptes[i].sectorbuffer); |
2584 | } |
2585 | } |
2586 | |
2587 | static void |
2588 | move_begin(unsigned i) |
2589 | { |
2590 | struct pte *pe = &ptes[i]; |
2591 | struct partition *p = pe->part_table; |
2592 | sector_t new, first, nr_sects; |
2593 | |
2594 | if (warn_geometry()) |
2595 | return; |
2596 | nr_sects = get_nr_sects(p); |
2597 | if (!p->sys_ind || !nr_sects || IS_EXTENDED(p->sys_ind)) { |
2598 | printf("Partition %u has no data area\n", i + 1); |
2599 | return; |
2600 | } |
2601 | first = get_partition_start_from_dev_start(pe); /* == pe->offset_from_dev_start + get_start_sect(p) */ |
2602 | new = read_int(0 /*was:first*/, first, first + nr_sects - 1, first, "New beginning of data"); |
2603 | if (new != first) { |
2604 | sector_t new_relative = new - pe->offset_from_dev_start; |
2605 | nr_sects += (get_start_sect(p) - new_relative); |
2606 | set_start_sect(p, new_relative); |
2607 | set_nr_sects(p, nr_sects); |
2608 | read_nonempty("Recalculate C/H/S values? (Y/N): "); |
2609 | if ((line_ptr[0] | 0x20) == 'y') |
2610 | set_hsc_start_end(p, new, new + nr_sects - 1); |
2611 | pe->changed = 1; |
2612 | } |
2613 | } |
2614 | |
2615 | static void |
2616 | xselect(void) |
2617 | { |
2618 | char c; |
2619 | |
2620 | while (1) { |
2621 | bb_putchar('\n'); |
2622 | c = 0x20 | read_nonempty("Expert command (m for help): "); |
2623 | switch (c) { |
2624 | case 'a': |
2625 | if (LABEL_IS_SUN) |
2626 | sun_set_alt_cyl(); |
2627 | break; |
2628 | case 'b': |
2629 | if (LABEL_IS_DOS) |
2630 | move_begin(get_partition(0, g_partitions)); |
2631 | break; |
2632 | case 'c': |
2633 | user_cylinders = g_cylinders = |
2634 | read_int(1, g_cylinders, 1048576, 0, |
2635 | "Number of cylinders"); |
2636 | if (LABEL_IS_SUN) |
2637 | sun_set_ncyl(g_cylinders); |
2638 | if (LABEL_IS_DOS) |
2639 | warn_cylinders(); |
2640 | break; |
2641 | case 'd': |
2642 | print_raw(); |
2643 | break; |
2644 | case 'e': |
2645 | if (LABEL_IS_SGI) |
2646 | sgi_set_xcyl(); |
2647 | else if (LABEL_IS_SUN) |
2648 | sun_set_xcyl(); |
2649 | else if (LABEL_IS_DOS) |
2650 | x_list_table(1); |
2651 | break; |
2652 | case 'f': |
2653 | if (LABEL_IS_DOS) |
2654 | fix_partition_table_order(); |
2655 | break; |
2656 | case 'g': |
2657 | #if ENABLE_FEATURE_SGI_LABEL |
2658 | create_sgilabel(); |
2659 | #endif |
2660 | break; |
2661 | case 'h': |
2662 | user_heads = g_heads = read_int(1, g_heads, 256, 0, "Number of heads"); |
2663 | update_units(); |
2664 | break; |
2665 | case 'i': |
2666 | if (LABEL_IS_SUN) |
2667 | sun_set_ilfact(); |
2668 | break; |
2669 | case 'o': |
2670 | if (LABEL_IS_SUN) |
2671 | sun_set_rspeed(); |
2672 | break; |
2673 | case 'p': |
2674 | if (LABEL_IS_SUN) |
2675 | list_table(1); |
2676 | else |
2677 | x_list_table(0); |
2678 | break; |
2679 | case 'q': |
2680 | if (ENABLE_FEATURE_CLEAN_UP) |
2681 | close_dev_fd(); |
2682 | bb_putchar('\n'); |
2683 | exit(EXIT_SUCCESS); |
2684 | case 'r': |
2685 | return; |
2686 | case 's': |
2687 | user_sectors = g_sectors = read_int(1, g_sectors, 63, 0, "Number of sectors"); |
2688 | if (dos_compatible_flag) { |
2689 | sector_offset = g_sectors; |
2690 | printf("Warning: setting sector offset for DOS " |
2691 | "compatiblity\n"); |
2692 | } |
2693 | update_units(); |
2694 | break; |
2695 | case 'v': |
2696 | verify(); |
2697 | break; |
2698 | case 'w': |
2699 | write_table(); /* does not return */ |
2700 | break; |
2701 | case 'y': |
2702 | if (LABEL_IS_SUN) |
2703 | sun_set_pcylcount(); |
2704 | break; |
2705 | default: |
2706 | xmenu(); |
2707 | } |
2708 | } |
2709 | } |
2710 | #endif /* ADVANCED mode */ |
2711 | |
2712 | static int |
2713 | is_ide_cdrom_or_tape(const char *device) |
2714 | { |
2715 | FILE *procf; |
2716 | char buf[100]; |
2717 | struct stat statbuf; |
2718 | int is_ide = 0; |
2719 | |
2720 | /* No device was given explicitly, and we are trying some |
2721 | likely things. But opening /dev/hdc may produce errors like |
2722 | "hdc: tray open or drive not ready" |
2723 | if it happens to be a CD-ROM drive. It even happens that |
2724 | the process hangs on the attempt to read a music CD. |
2725 | So try to be careful. This only works since 2.1.73. */ |
2726 | |
2727 | if (strncmp("/dev/hd", device, 7)) |
2728 | return 0; |
2729 | |
2730 | snprintf(buf, sizeof(buf), "/proc/ide/%s/media", device+5); |
2731 | procf = fopen_for_read(buf); |
2732 | if (procf != NULL && fgets(buf, sizeof(buf), procf)) |
2733 | is_ide = (!strncmp(buf, "cdrom", 5) || |
2734 | !strncmp(buf, "tape", 4)); |
2735 | else |
2736 | /* Now when this proc file does not exist, skip the |
2737 | device when it is read-only. */ |
2738 | if (stat(device, &statbuf) == 0) |
2739 | is_ide = ((statbuf.st_mode & 0222) == 0); |
2740 | |
2741 | if (procf) |
2742 | fclose(procf); |
2743 | return is_ide; |
2744 | } |
2745 | |
2746 | |
2747 | static void |
2748 | open_list_and_close(const char *device, int user_specified) |
2749 | { |
2750 | int gb; |
2751 | |
2752 | disk_device = device; |
2753 | if (setjmp(listingbuf)) |
2754 | return; |
2755 | if (!user_specified) |
2756 | if (is_ide_cdrom_or_tape(device)) |
2757 | return; |
2758 | |
2759 | /* Open disk_device, save file descriptor to dev_fd */ |
2760 | errno = 0; |
2761 | gb = get_boot(TRY_ONLY); |
2762 | if (gb > 0) { /* I/O error */ |
2763 | /* Ignore other errors, since we try IDE |
2764 | and SCSI hard disks which may not be |
2765 | installed on the system. */ |
2766 | if (user_specified || errno == EACCES) |
2767 | bb_perror_msg("can't open '%s'", device); |
2768 | return; |
2769 | } |
2770 | |
2771 | if (gb < 0) { /* no DOS signature */ |
2772 | list_disk_geometry(); |
2773 | if (LABEL_IS_AIX) |
2774 | goto ret; |
2775 | #if ENABLE_FEATURE_OSF_LABEL |
2776 | if (bsd_trydev(device) < 0) |
2777 | #endif |
2778 | printf("Disk %s doesn't contain a valid " |
2779 | "partition table\n", device); |
2780 | } else { |
2781 | list_table(0); |
2782 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2783 | if (!LABEL_IS_SUN && g_partitions > 4) { |
2784 | delete_partition(ext_index); |
2785 | } |
2786 | #endif |
2787 | } |
2788 | ret: |
2789 | close_dev_fd(); |
2790 | } |
2791 | |
2792 | /* for fdisk -l: try all things in /proc/partitions |
2793 | that look like a partition name (do not end in a digit) */ |
2794 | static void |
2795 | list_devs_in_proc_partititons(void) |
2796 | { |
2797 | FILE *procpt; |
2798 | char line[100], ptname[100], devname[120], *s; |
2799 | int ma, mi, sz; |
2800 | |
2801 | procpt = fopen_or_warn("/proc/partitions", "r"); |
2802 | |
2803 | while (fgets(line, sizeof(line), procpt)) { |
2804 | if (sscanf(line, " %u %u %u %[^\n ]", |
2805 | &ma, &mi, &sz, ptname) != 4) |
2806 | continue; |
2807 | for (s = ptname; *s; s++) |
2808 | continue; |
2809 | /* note: excluding '0': e.g. mmcblk0 is not a partition name! */ |
2810 | if (s[-1] >= '1' && s[-1] <= '9') |
2811 | continue; |
2812 | sprintf(devname, "/dev/%s", ptname); |
2813 | open_list_and_close(devname, 0); |
2814 | } |
2815 | #if ENABLE_FEATURE_CLEAN_UP |
2816 | fclose(procpt); |
2817 | #endif |
2818 | } |
2819 | |
2820 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2821 | static void |
2822 | unknown_command(int c) |
2823 | { |
2824 | printf("%c: unknown command\n", c); |
2825 | } |
2826 | #endif |
2827 | |
2828 | int fdisk_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
2829 | int fdisk_main(int argc UNUSED_PARAM, char **argv) |
2830 | { |
2831 | unsigned opt; |
2832 | /* |
2833 | * fdisk -v |
2834 | * fdisk -l [-b sectorsize] [-u] device ... |
2835 | * fdisk -s [partition] ... |
2836 | * fdisk [-b sectorsize] [-u] device |
2837 | * |
2838 | * Options -C, -H, -S set the geometry. |
2839 | */ |
2840 | INIT_G(); |
2841 | |
2842 | close_dev_fd(); /* needed: fd 3 must not stay closed */ |
2843 | |
2844 | opt_complementary = "b+:C+:H+:S+"; /* numeric params */ |
2845 | opt = getopt32(argv, "b:C:H:lS:u" IF_FEATURE_FDISK_BLKSIZE("s"), |
2846 | §or_size, &user_cylinders, &user_heads, &user_sectors); |
2847 | argv += optind; |
2848 | if (opt & OPT_b) { |
2849 | /* Ugly: this sector size is really per device, |
2850 | * so cannot be combined with multiple disks, |
2851 | * and the same goes for the C/H/S options. |
2852 | */ |
2853 | if (sector_size < 512 |
2854 | || sector_size > 0x10000 |
2855 | || (sector_size & (sector_size-1)) /* not power of 2 */ |
2856 | ) { |
2857 | bb_show_usage(); |
2858 | } |
2859 | sector_offset = 2; |
2860 | user_set_sector_size = 1; |
2861 | } |
2862 | if (user_heads <= 0 || user_heads >= 256) |
2863 | user_heads = 0; |
2864 | if (user_sectors <= 0 || user_sectors >= 64) |
2865 | user_sectors = 0; |
2866 | if (opt & OPT_u) |
2867 | display_in_cyl_units = 0; // -u |
2868 | |
2869 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2870 | if (opt & OPT_l) { |
2871 | nowarn = 1; |
2872 | #endif |
2873 | if (*argv) { |
2874 | listing = 1; |
2875 | do { |
2876 | open_list_and_close(*argv, 1); |
2877 | } while (*++argv); |
2878 | } else { |
2879 | /* we don't have device names, */ |
2880 | /* use /proc/partitions instead */ |
2881 | list_devs_in_proc_partititons(); |
2882 | } |
2883 | return 0; |
2884 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2885 | } |
2886 | #endif |
2887 | |
2888 | #if ENABLE_FEATURE_FDISK_BLKSIZE |
2889 | if (opt & OPT_s) { |
2890 | int j; |
2891 | |
2892 | nowarn = 1; |
2893 | if (!argv[0]) |
2894 | bb_show_usage(); |
2895 | for (j = 0; argv[j]; j++) { |
2896 | unsigned long long size; |
2897 | fd = xopen(argv[j], O_RDONLY); |
2898 | size = bb_BLKGETSIZE_sectors(fd) / 2; |
2899 | close(fd); |
2900 | if (argv[1]) |
2901 | printf("%llu\n", size); |
2902 | else |
2903 | printf("%s: %llu\n", argv[j], size); |
2904 | } |
2905 | return 0; |
2906 | } |
2907 | #endif |
2908 | |
2909 | #if ENABLE_FEATURE_FDISK_WRITABLE |
2910 | if (!argv[0] || argv[1]) |
2911 | bb_show_usage(); |
2912 | |
2913 | disk_device = argv[0]; |
2914 | get_boot(OPEN_MAIN); |
2915 | |
2916 | if (LABEL_IS_OSF) { |
2917 | /* OSF label, and no DOS label */ |
2918 | printf("Detected an OSF/1 disklabel on %s, entering " |
2919 | "disklabel mode\n", disk_device); |
2920 | bsd_select(); |
2921 | /*Why do we do this? It seems to be counter-intuitive*/ |
2922 | current_label_type = LABEL_DOS; |
2923 | /* If we return we may want to make an empty DOS label? */ |
2924 | } |
2925 | |
2926 | while (1) { |
2927 | int c; |
2928 | bb_putchar('\n'); |
2929 | c = 0x20 | read_nonempty("Command (m for help): "); |
2930 | switch (c) { |
2931 | case 'a': |
2932 | if (LABEL_IS_DOS) |
2933 | toggle_active(get_partition(1, g_partitions)); |
2934 | else if (LABEL_IS_SUN) |
2935 | toggle_sunflags(get_partition(1, g_partitions), |
2936 | 0x01); |
2937 | else if (LABEL_IS_SGI) |
2938 | sgi_set_bootpartition( |
2939 | get_partition(1, g_partitions)); |
2940 | else |
2941 | unknown_command(c); |
2942 | break; |
2943 | case 'b': |
2944 | if (LABEL_IS_SGI) { |
2945 | printf("\nThe current boot file is: %s\n", |
2946 | sgi_get_bootfile()); |
2947 | if (read_maybe_empty("Please enter the name of the " |
2948 | "new boot file: ") == '\n') |
2949 | printf("Boot file unchanged\n"); |
2950 | else |
2951 | sgi_set_bootfile(line_ptr); |
2952 | } |
2953 | #if ENABLE_FEATURE_OSF_LABEL |
2954 | else |
2955 | bsd_select(); |
2956 | #endif |
2957 | break; |
2958 | case 'c': |
2959 | if (LABEL_IS_DOS) |
2960 | toggle_dos_compatibility_flag(); |
2961 | else if (LABEL_IS_SUN) |
2962 | toggle_sunflags(get_partition(1, g_partitions), |
2963 | 0x10); |
2964 | else if (LABEL_IS_SGI) |
2965 | sgi_set_swappartition( |
2966 | get_partition(1, g_partitions)); |
2967 | else |
2968 | unknown_command(c); |
2969 | break; |
2970 | case 'd': |
2971 | { |
2972 | int j; |
2973 | /* If sgi_label then don't use get_existing_partition, |
2974 | let the user select a partition, since |
2975 | get_existing_partition() only works for Linux-like |
2976 | partition tables */ |
2977 | if (!LABEL_IS_SGI) { |
2978 | j = get_existing_partition(1, g_partitions); |
2979 | } else { |
2980 | j = get_partition(1, g_partitions); |
2981 | } |
2982 | if (j >= 0) |
2983 | delete_partition(j); |
2984 | } |
2985 | break; |
2986 | case 'i': |
2987 | if (LABEL_IS_SGI) |
2988 | create_sgiinfo(); |
2989 | else |
2990 | unknown_command(c); |
2991 | case 'l': |
2992 | list_types(get_sys_types()); |
2993 | break; |
2994 | case 'm': |
2995 | menu(); |
2996 | break; |
2997 | case 'n': |
2998 | new_partition(); |
2999 | break; |
3000 | case 'o': |
3001 | create_doslabel(); |
3002 | break; |
3003 | case 'p': |
3004 | list_table(0); |
3005 | break; |
3006 | case 'q': |
3007 | if (ENABLE_FEATURE_CLEAN_UP) |
3008 | close_dev_fd(); |
3009 | bb_putchar('\n'); |
3010 | return 0; |
3011 | case 's': |
3012 | #if ENABLE_FEATURE_SUN_LABEL |
3013 | create_sunlabel(); |
3014 | #endif |
3015 | break; |
3016 | case 't': |
3017 | change_sysid(); |
3018 | break; |
3019 | case 'u': |
3020 | change_units(); |
3021 | break; |
3022 | case 'v': |
3023 | verify(); |
3024 | break; |
3025 | case 'w': |
3026 | write_table(); /* does not return */ |
3027 | break; |
3028 | #if ENABLE_FEATURE_FDISK_ADVANCED |
3029 | case 'x': |
3030 | if (LABEL_IS_SGI) { |
3031 | printf("\n\tSorry, no experts menu for SGI " |
3032 | "partition tables available\n\n"); |
3033 | } else |
3034 | xselect(); |
3035 | break; |
3036 | #endif |
3037 | default: |
3038 | unknown_command(c); |
3039 | menu(); |
3040 | } |
3041 | } |
3042 | return 0; |
3043 | #endif /* FEATURE_FDISK_WRITABLE */ |
3044 | } |