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Commit | Line | Data |
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e2ee9178 | 1 | /* |
c10937dc | 2 | * |
50992267 KZ |
3 | * Copyright (C) 2007-2013 Karel Zak <kzak@redhat.com> |
4 | * 2012 Davidlohr Bueso <dave@gnu.org> | |
c10937dc KZ |
5 | * |
6 | * This is re-written version for libfdisk, the original was fdiskdoslabel.c | |
7 | * from util-linux fdisk. | |
e2ee9178 | 8 | */ |
ddec0e40 | 9 | #include "c.h" |
e2ee9178 | 10 | #include "randutils.h" |
bb58112e | 11 | #include "pt-mbr.h" |
ac1a559a | 12 | #include "strutils.h" |
bb58112e | 13 | |
c10937dc KZ |
14 | #include "fdiskP.h" |
15 | ||
235adaa6 KZ |
16 | #include <ctype.h> |
17 | ||
bb58112e | 18 | #define MAXIMUM_PARTS 60 |
bb58112e KZ |
19 | #define ACTIVE_FLAG 0x80 |
20 | ||
b7d101a2 KZ |
21 | /** |
22 | * SECTION: dos | |
314a2145 | 23 | * @title: DOS |
705854f3 | 24 | * @short_description: disk label specific functions |
b7d101a2 KZ |
25 | * |
26 | */ | |
27 | ||
28 | ||
bb58112e KZ |
29 | #define IS_EXTENDED(i) \ |
30 | ((i) == MBR_DOS_EXTENDED_PARTITION \ | |
31 | || (i) == MBR_W95_EXTENDED_PARTITION \ | |
32 | || (i) == MBR_LINUX_EXTENDED_PARTITION) | |
33 | ||
af0df606 KZ |
34 | /* |
35 | * per partition table entry data | |
36 | * | |
37 | * The four primary partitions have the same sectorbuffer | |
38 | * and have NULL ex_entry. | |
39 | * | |
40 | * Each logical partition table entry has two pointers, one for the | |
41 | * partition and one link to the next one. | |
42 | */ | |
43 | struct pte { | |
44 | struct dos_partition *pt_entry; /* on-disk MBR entry */ | |
45 | struct dos_partition *ex_entry; /* on-disk EBR entry */ | |
0073a4cf | 46 | fdisk_sector_t offset; /* disk sector number */ |
af0df606 | 47 | unsigned char *sectorbuffer; /* disk sector contents */ |
ddec0e40 KZ |
48 | |
49 | unsigned int changed : 1, | |
50 | private_sectorbuffer : 1; | |
af0df606 | 51 | }; |
0c5d095e KZ |
52 | |
53 | /* | |
54 | * in-memory fdisk GPT stuff | |
55 | */ | |
56 | struct fdisk_dos_label { | |
57 | struct fdisk_label head; /* generic part */ | |
852ce62b | 58 | |
af0df606 | 59 | struct pte ptes[MAXIMUM_PARTS]; /* partition */ |
0073a4cf | 60 | fdisk_sector_t ext_offset; /* start of the ext.partition */ |
e77313a6 | 61 | size_t ext_index; /* ext.partition index (if ext_offset is set) */ |
8b3d9241 KZ |
62 | unsigned int compatible : 1, /* is DOS compatible? */ |
63 | non_pt_changed : 1; /* MBR, but no PT changed */ | |
0c5d095e KZ |
64 | }; |
65 | ||
66 | /* | |
67 | * Partition types | |
68 | */ | |
749af4b6 | 69 | static struct fdisk_parttype dos_parttypes[] = { |
50992267 | 70 | #include "pt-mbr-partnames.h" |
749af4b6 KZ |
71 | }; |
72 | ||
9dea2923 | 73 | #define set_hsc(h,s,c,sector) { \ |
24cd580b DB |
74 | s = sector % cxt->geom.sectors + 1; \ |
75 | sector /= cxt->geom.sectors; \ | |
76 | h = sector % cxt->geom.heads; \ | |
77 | sector /= cxt->geom.heads; \ | |
78 | c = sector & 0xff; \ | |
79 | s |= (sector >> 2) & 0xc0; \ | |
9dea2923 DB |
80 | } |
81 | ||
5dfca634 KZ |
82 | |
83 | #define sector(s) ((s) & 0x3f) | |
84 | #define cylinder(s, c) ((c) | (((s) & 0xc0) << 2)) | |
85 | ||
cf3808e4 | 86 | #define alignment_required(_x) ((_x)->grain != (_x)->sector_size) |
9dea2923 | 87 | |
28b85e60 | 88 | #define is_dos_compatible(_x) \ |
aa36c2cf | 89 | (fdisk_is_label(_x, DOS) && \ |
6a632136 | 90 | fdisk_dos_is_compatible(fdisk_get_label(_x, NULL))) |
96f817fb | 91 | |
80063996 | 92 | #define cround(c, n) fdisk_cround(c, n) |
3c88fb56 | 93 | |
af0df606 KZ |
94 | |
95 | static inline struct fdisk_dos_label *self_label(struct fdisk_context *cxt) | |
96 | { | |
97 | assert(cxt); | |
98 | assert(cxt->label); | |
aa36c2cf | 99 | assert(fdisk_is_label(cxt, DOS)); |
af0df606 KZ |
100 | |
101 | return (struct fdisk_dos_label *) cxt->label; | |
102 | } | |
103 | ||
104 | static inline struct pte *self_pte(struct fdisk_context *cxt, size_t i) | |
105 | { | |
106 | struct fdisk_dos_label *l = self_label(cxt); | |
107 | ||
108 | if (i >= ARRAY_SIZE(l->ptes)) | |
109 | return NULL; | |
110 | ||
111 | return &l->ptes[i]; | |
112 | } | |
113 | ||
114 | static inline struct dos_partition *self_partition( | |
115 | struct fdisk_context *cxt, | |
116 | size_t i) | |
117 | { | |
118 | struct pte *pe = self_pte(cxt, i); | |
119 | return pe ? pe->pt_entry : NULL; | |
120 | } | |
121 | ||
122 | struct dos_partition *fdisk_dos_get_partition( | |
123 | struct fdisk_context *cxt, | |
124 | size_t i) | |
125 | { | |
60c1b036 KZ |
126 | assert(cxt); |
127 | assert(cxt->label); | |
aa36c2cf | 128 | assert(fdisk_is_label(cxt, DOS)); |
60c1b036 | 129 | |
af0df606 KZ |
130 | return self_partition(cxt, i); |
131 | } | |
132 | ||
7f01ec7a KZ |
133 | static struct fdisk_parttype *dos_partition_parttype( |
134 | struct fdisk_context *cxt, | |
135 | struct dos_partition *p) | |
136 | { | |
137 | struct fdisk_parttype *t | |
a745611d | 138 | = fdisk_label_get_parttype_from_code(cxt->label, p->sys_ind); |
7f01ec7a KZ |
139 | return t ? : fdisk_new_unknown_parttype(p->sys_ind, NULL); |
140 | } | |
141 | ||
1b92d076 KZ |
142 | /* |
143 | * Linux kernel cares about partition size only. Things like | |
144 | * partition type or so are completely irrelevant -- kzak Nov-2013 | |
145 | */ | |
146 | static int is_used_partition(struct dos_partition *p) | |
147 | { | |
148 | return p && dos_partition_get_size(p) != 0; | |
149 | } | |
150 | ||
af0df606 KZ |
151 | static void partition_set_changed( |
152 | struct fdisk_context *cxt, | |
153 | size_t i, | |
154 | int changed) | |
155 | { | |
156 | struct pte *pe = self_pte(cxt, i); | |
157 | ||
158 | if (!pe) | |
159 | return; | |
160 | ||
88141067 | 161 | DBG(LABEL, ul_debug("DOS: setting %zu partition to %s", i, |
afef428f | 162 | changed ? "changed" : "unchanged")); |
9c825fa0 | 163 | |
ddec0e40 | 164 | pe->changed = changed ? 1 : 0; |
af0df606 KZ |
165 | if (changed) |
166 | fdisk_label_set_changed(cxt->label, 1); | |
167 | } | |
168 | ||
0073a4cf | 169 | static fdisk_sector_t get_abs_partition_start(struct pte *pe) |
61eaad50 | 170 | { |
60c1b036 KZ |
171 | assert(pe); |
172 | assert(pe->pt_entry); | |
173 | ||
61eaad50 KZ |
174 | return pe->offset + dos_partition_get_start(pe->pt_entry); |
175 | } | |
176 | ||
0073a4cf | 177 | static fdisk_sector_t get_abs_partition_end(struct pte *pe) |
d0a870c5 | 178 | { |
0073a4cf | 179 | fdisk_sector_t size; |
1b92d076 KZ |
180 | |
181 | assert(pe); | |
182 | assert(pe->pt_entry); | |
183 | ||
184 | size = dos_partition_get_size(pe->pt_entry); | |
185 | return get_abs_partition_start(pe) + size - (size ? 1 : 0); | |
d0a870c5 KZ |
186 | } |
187 | ||
a64aa3b8 KZ |
188 | static int is_cleared_partition(struct dos_partition *p) |
189 | { | |
190 | return !(!p || p->boot_ind || p->bh || p->bs || p->bc || | |
191 | p->sys_ind || p->eh || p->es || p->ec || | |
192 | dos_partition_get_start(p) || dos_partition_get_size(p)); | |
193 | } | |
194 | ||
77d6a70a | 195 | static int get_partition_unused_primary(struct fdisk_context *cxt, |
44374b10 BE |
196 | struct fdisk_partition *pa, |
197 | size_t *partno) | |
9dea2923 | 198 | { |
44374b10 | 199 | size_t org, n; |
1bf3a034 | 200 | int rc; |
9dea2923 | 201 | |
44374b10 BE |
202 | assert(cxt); |
203 | assert(cxt->label); | |
204 | assert(partno); | |
205 | ||
206 | org = cxt->label->nparts_max; | |
207 | ||
1bf3a034 | 208 | cxt->label->nparts_max = 4; |
6c89f750 | 209 | rc = fdisk_partition_next_partno(pa, cxt, &n); |
77d6a70a | 210 | cxt->label->nparts_max = org; |
1bf3a034 | 211 | |
44374b10 | 212 | if (rc == 1) { |
ac1a559a | 213 | fdisk_info(cxt, _("All primary partitions have been defined already.")); |
44374b10 | 214 | rc = -1; |
53625d1a KZ |
215 | } else if (rc == -ERANGE) { |
216 | fdisk_warnx(cxt, _("Primary partition not available.")); | |
44374b10 BE |
217 | } else if (rc == 0) |
218 | *partno = n; | |
53625d1a | 219 | |
44374b10 | 220 | return rc; |
9dea2923 DB |
221 | } |
222 | ||
0073a4cf | 223 | static int seek_sector(struct fdisk_context *cxt, fdisk_sector_t secno) |
c37ebc12 KZ |
224 | { |
225 | off_t offset = (off_t) secno * cxt->sector_size; | |
226 | ||
227 | return lseek(cxt->dev_fd, offset, SEEK_SET) == (off_t) -1 ? -errno : 0; | |
228 | } | |
229 | ||
0073a4cf | 230 | static int read_sector(struct fdisk_context *cxt, fdisk_sector_t secno, |
c37ebc12 KZ |
231 | unsigned char *buf) |
232 | { | |
233 | int rc = seek_sector(cxt, secno); | |
11fe0448 | 234 | ssize_t r; |
c37ebc12 KZ |
235 | |
236 | if (rc < 0) | |
237 | return rc; | |
238 | ||
11fe0448 KZ |
239 | r = read(cxt->dev_fd, buf, cxt->sector_size); |
240 | if (r == (ssize_t) cxt->sector_size) | |
241 | return 0; | |
242 | if (r < 0) | |
243 | return -errno; | |
244 | return -1; | |
c37ebc12 | 245 | } |
9dea2923 | 246 | |
e2ee9178 | 247 | /* Allocate a buffer and read a partition table sector */ |
0073a4cf | 248 | static int read_pte(struct fdisk_context *cxt, size_t pno, fdisk_sector_t offset) |
e2ee9178 | 249 | { |
11fe0448 | 250 | int rc; |
af0df606 KZ |
251 | unsigned char *buf; |
252 | struct pte *pe = self_pte(cxt, pno); | |
253 | ||
b2b52925 KZ |
254 | if (!pe) |
255 | return -EINVAL; | |
256 | ||
af0df606 KZ |
257 | buf = calloc(1, cxt->sector_size); |
258 | if (!buf) | |
259 | return -ENOMEM; | |
e2ee9178 | 260 | |
613596b3 KZ |
261 | DBG(LABEL, ul_debug("DOS: reading EBR %zu: offset=%ju, buffer=%p", |
262 | pno, (uintmax_t) offset, buf)); | |
9c825fa0 | 263 | |
e2ee9178 | 264 | pe->offset = offset; |
af0df606 | 265 | pe->sectorbuffer = buf; |
ddec0e40 | 266 | pe->private_sectorbuffer = 1; |
21770662 | 267 | |
11fe0448 KZ |
268 | rc = read_sector(cxt, offset, pe->sectorbuffer); |
269 | if (rc) { | |
fcea064b | 270 | fdisk_warn(cxt, _("Failed to read extended partition table " |
829f4206 | 271 | "(offset=%ju)"), (uintmax_t) offset); |
11fe0448 KZ |
272 | return rc; |
273 | } | |
274 | ||
e2ee9178 | 275 | pe->changed = 0; |
6864f168 | 276 | pe->pt_entry = pe->ex_entry = NULL; |
af0df606 | 277 | return 0; |
e2ee9178 DB |
278 | } |
279 | ||
e2ee9178 | 280 | |
f540fe15 | 281 | static void clear_partition(struct dos_partition *p) |
e2ee9178 DB |
282 | { |
283 | if (!p) | |
284 | return; | |
285 | p->boot_ind = 0; | |
da967236 KZ |
286 | p->bh = 0; |
287 | p->bs = 0; | |
288 | p->bc = 0; | |
e2ee9178 | 289 | p->sys_ind = 0; |
da967236 KZ |
290 | p->eh = 0; |
291 | p->es = 0; | |
292 | p->ec = 0; | |
b44244cb KZ |
293 | dos_partition_set_start(p,0); |
294 | dos_partition_set_size(p,0); | |
e2ee9178 DB |
295 | } |
296 | ||
ddec0e40 | 297 | static void dos_init(struct fdisk_context *cxt) |
e2ee9178 | 298 | { |
fcea064b | 299 | struct fdisk_dos_label *l = self_label(cxt); |
e3661531 | 300 | size_t i; |
e2ee9178 | 301 | |
60c1b036 KZ |
302 | assert(cxt); |
303 | assert(cxt->label); | |
aa36c2cf | 304 | assert(fdisk_is_label(cxt, DOS)); |
60c1b036 | 305 | |
88141067 | 306 | DBG(LABEL, ul_debug("DOS: initialize, first sector buffer %p", cxt->firstsector)); |
9c825fa0 | 307 | |
e3661531 | 308 | cxt->label->nparts_max = 4; /* default, unlimited number of logical */ |
ddec0e40 | 309 | |
fcea064b KZ |
310 | l->ext_index = 0; |
311 | l->ext_offset = 0; | |
ddec0e40 KZ |
312 | l->non_pt_changed = 0; |
313 | ||
314 | memset(l->ptes, 0, sizeof(l->ptes)); | |
e2ee9178 DB |
315 | |
316 | for (i = 0; i < 4; i++) { | |
af0df606 | 317 | struct pte *pe = self_pte(cxt, i); |
e2ee9178 | 318 | |
b2b52925 | 319 | assert(pe); |
e8bf93de | 320 | pe->pt_entry = mbr_get_partition(cxt->firstsector, i); |
6864f168 | 321 | pe->ex_entry = NULL; |
e2ee9178 | 322 | pe->offset = 0; |
67987b47 | 323 | pe->sectorbuffer = cxt->firstsector; |
9c825fa0 | 324 | pe->private_sectorbuffer = 0; |
e2ee9178 | 325 | pe->changed = 0; |
a1001292 KZ |
326 | |
327 | DBG(LABEL, ul_debug("DOS: initialize: #%zu start=%u size=%u sysid=%02x", | |
328 | i + 1, | |
329 | dos_partition_get_start(pe->pt_entry), | |
330 | dos_partition_get_size(pe->pt_entry), | |
331 | pe->pt_entry->sys_ind)); | |
e2ee9178 DB |
332 | } |
333 | ||
6a632136 | 334 | if (fdisk_is_listonly(cxt)) |
4f79f887 KZ |
335 | return; |
336 | /* | |
337 | * Various warnings... | |
338 | */ | |
339 | if (fdisk_missing_geometry(cxt)) | |
340 | fdisk_warnx(cxt, _("You can set geometry from the extra functions menu.")); | |
341 | ||
342 | if (is_dos_compatible(cxt)) { | |
343 | fdisk_warnx(cxt, _("DOS-compatible mode is deprecated.")); | |
344 | ||
345 | if (cxt->sector_size != cxt->phy_sector_size) | |
346 | fdisk_info(cxt, _( | |
347 | "The device presents a logical sector size that is smaller than " | |
348 | "the physical sector size. Aligning to a physical sector (or optimal " | |
349 | "I/O) size boundary is recommended, or performance may be impacted.")); | |
350 | } | |
351 | ||
6a632136 | 352 | if (fdisk_use_cylinders(cxt)) |
4f79f887 | 353 | fdisk_warnx(cxt, _("Cylinders as display units are deprecated.")); |
0b52b94c | 354 | |
4f79f887 | 355 | if (cxt->total_sectors > UINT_MAX) { |
ac1a559a KZ |
356 | uint64_t bytes = cxt->total_sectors * cxt->sector_size; |
357 | char *szstr = size_to_human_string(SIZE_SUFFIX_SPACE | |
358 | | SIZE_SUFFIX_3LETTER, bytes); | |
fcea064b | 359 | fdisk_warnx(cxt, |
829f4206 | 360 | _("The size of this disk is %s (%ju bytes). DOS " |
223939d9 | 361 | "partition table format cannot be used on drives for " |
27aadd8b | 362 | "volumes larger than %lu bytes for %lu-byte " |
fcea064b | 363 | "sectors. Use GUID partition table format (GPT)."), |
829f4206 KZ |
364 | szstr, bytes, |
365 | UINT_MAX * cxt->sector_size, | |
0b52b94c | 366 | cxt->sector_size); |
ac1a559a | 367 | free(szstr); |
0b52b94c | 368 | } |
e2ee9178 DB |
369 | } |
370 | ||
ddec0e40 KZ |
371 | /* callback called by libfdisk */ |
372 | static void dos_deinit(struct fdisk_label *lb) | |
373 | { | |
374 | size_t i; | |
375 | struct fdisk_dos_label *l = (struct fdisk_dos_label *) lb; | |
376 | ||
377 | for (i = 0; i < ARRAY_SIZE(l->ptes); i++) { | |
378 | struct pte *pe = &l->ptes[i]; | |
379 | ||
9c825fa0 | 380 | if (pe->private_sectorbuffer && pe->sectorbuffer) { |
88141067 | 381 | DBG(LABEL, ul_debug("DOS: freeing pte %zu sector buffer %p", |
9c825fa0 | 382 | i, pe->sectorbuffer)); |
ddec0e40 | 383 | free(pe->sectorbuffer); |
9c825fa0 | 384 | } |
ddec0e40 | 385 | pe->sectorbuffer = NULL; |
9c825fa0 | 386 | pe->private_sectorbuffer = 0; |
ddec0e40 KZ |
387 | } |
388 | ||
389 | memset(l->ptes, 0, sizeof(l->ptes)); | |
390 | } | |
391 | ||
613596b3 KZ |
392 | static void reset_pte(struct pte *pe) |
393 | { | |
394 | assert(pe); | |
395 | ||
396 | if (pe->private_sectorbuffer) { | |
625d00fe | 397 | DBG(LABEL, ul_debug(" --> freeing pte sector buffer %p", |
613596b3 KZ |
398 | pe->sectorbuffer)); |
399 | free(pe->sectorbuffer); | |
400 | } | |
401 | memset(pe, 0, sizeof(struct pte)); | |
402 | } | |
403 | ||
e5e70463 | 404 | static int delete_partition(struct fdisk_context *cxt, size_t partnum) |
61c4cb85 | 405 | { |
60c1b036 KZ |
406 | struct fdisk_dos_label *l; |
407 | struct pte *pe; | |
af0df606 KZ |
408 | struct dos_partition *p; |
409 | struct dos_partition *q; | |
410 | ||
60c1b036 KZ |
411 | assert(cxt); |
412 | assert(cxt->label); | |
aa36c2cf | 413 | assert(fdisk_is_label(cxt, DOS)); |
60c1b036 KZ |
414 | |
415 | pe = self_pte(cxt, partnum); | |
af0df606 KZ |
416 | if (!pe) |
417 | return -EINVAL; | |
418 | ||
9e930041 | 419 | DBG(LABEL, ul_debug("DOS: delete partition %zu (max=%zu)", partnum, |
bcddbe96 | 420 | cxt->label->nparts_max)); |
9c825fa0 | 421 | |
60c1b036 | 422 | l = self_label(cxt); |
af0df606 KZ |
423 | p = pe->pt_entry; |
424 | q = pe->ex_entry; | |
61c4cb85 DB |
425 | |
426 | /* Note that for the fifth partition (partnum == 4) we don't actually | |
427 | decrement partitions. */ | |
61c4cb85 | 428 | if (partnum < 4) { |
88141067 | 429 | DBG(LABEL, ul_debug("--> delete primary")); |
fcea064b | 430 | if (IS_EXTENDED(p->sys_ind) && partnum == l->ext_index) { |
625d00fe KZ |
431 | size_t i; |
432 | DBG(LABEL, ul_debug(" --> delete extended")); | |
433 | for (i = 4; i < cxt->label->nparts_max; i++) { | |
434 | DBG(LABEL, ul_debug(" --> delete logical #%zu", i)); | |
435 | reset_pte(&l->ptes[i]); | |
436 | ||
437 | } | |
e3661531 | 438 | cxt->label->nparts_max = 4; |
fcea064b KZ |
439 | l->ptes[l->ext_index].ex_entry = NULL; |
440 | l->ext_offset = 0; | |
e77313a6 | 441 | l->ext_index = 0; |
61c4cb85 | 442 | } |
af0df606 | 443 | partition_set_changed(cxt, partnum, 1); |
61c4cb85 DB |
444 | clear_partition(p); |
445 | } else if (!q->sys_ind && partnum > 4) { | |
88141067 | 446 | DBG(LABEL, ul_debug("--> delete logical [last in the chain]")); |
613596b3 | 447 | reset_pte(&l->ptes[partnum]); |
e3661531 | 448 | --cxt->label->nparts_max; |
61c4cb85 | 449 | --partnum; |
613596b3 | 450 | /* clear link to deleted partition */ |
af0df606 KZ |
451 | clear_partition(l->ptes[partnum].ex_entry); |
452 | partition_set_changed(cxt, partnum, 1); | |
61c4cb85 | 453 | } else { |
88141067 | 454 | DBG(LABEL, ul_debug("--> delete logical [move down]")); |
61c4cb85 | 455 | if (partnum > 4) { |
88141067 | 456 | DBG(LABEL, ul_debug(" --> delete %zu logical link", partnum)); |
af0df606 | 457 | p = l->ptes[partnum - 1].ex_entry; |
61c4cb85 | 458 | *p = *q; |
b44244cb KZ |
459 | dos_partition_set_start(p, dos_partition_get_start(q)); |
460 | dos_partition_set_size(p, dos_partition_get_size(q)); | |
af0df606 | 461 | partition_set_changed(cxt, partnum - 1, 1); |
61c4cb85 | 462 | |
bcddbe96 | 463 | } else if (cxt->label->nparts_max > 5) { |
88141067 | 464 | DBG(LABEL, ul_debug(" --> delete first logical link")); |
bcddbe96 KZ |
465 | pe = &l->ptes[5]; /* second logical */ |
466 | ||
467 | if (pe->pt_entry) /* prevent SEGFAULT */ | |
af0df606 KZ |
468 | dos_partition_set_start(pe->pt_entry, |
469 | get_abs_partition_start(pe) - | |
fcea064b KZ |
470 | l->ext_offset); |
471 | pe->offset = l->ext_offset; | |
af0df606 | 472 | partition_set_changed(cxt, 5, 1); |
61c4cb85 DB |
473 | } |
474 | ||
e3661531 | 475 | if (cxt->label->nparts_max > 5) { |
88141067 | 476 | DBG(LABEL, ul_debug(" --> move ptes")); |
e3661531 | 477 | cxt->label->nparts_max--; |
613596b3 | 478 | reset_pte(&l->ptes[partnum]); |
e3661531 | 479 | while (partnum < cxt->label->nparts_max) { |
88141067 | 480 | DBG(LABEL, ul_debug(" --> moving pte %zu <-- %zu", partnum, partnum + 1)); |
af0df606 | 481 | l->ptes[partnum] = l->ptes[partnum + 1]; |
61c4cb85 DB |
482 | partnum++; |
483 | } | |
9c825fa0 | 484 | memset(&l->ptes[partnum], 0, sizeof(struct pte)); |
bcddbe96 | 485 | } else { |
88141067 | 486 | DBG(LABEL, ul_debug(" --> the only logical: clear only")); |
af0df606 | 487 | clear_partition(l->ptes[partnum].pt_entry); |
bcddbe96 KZ |
488 | cxt->label->nparts_max--; |
489 | ||
490 | if (partnum == 4) { | |
88141067 | 491 | DBG(LABEL, ul_debug(" --> clear last logical")); |
613596b3 | 492 | reset_pte(&l->ptes[partnum]); |
bcddbe96 KZ |
493 | partition_set_changed(cxt, l->ext_index, 1); |
494 | } | |
495 | } | |
61c4cb85 | 496 | } |
1f5eb51b | 497 | |
9ffeb235 | 498 | fdisk_label_set_changed(cxt->label, 1); |
1f5eb51b | 499 | return 0; |
61c4cb85 DB |
500 | } |
501 | ||
e5e70463 KZ |
502 | static int dos_delete_partition(struct fdisk_context *cxt, size_t partnum) |
503 | { | |
504 | struct pte *pe; | |
505 | ||
506 | assert(cxt); | |
507 | assert(cxt->label); | |
508 | assert(fdisk_is_label(cxt, DOS)); | |
509 | ||
510 | pe = self_pte(cxt, partnum); | |
511 | if (!pe || !is_used_partition(pe->pt_entry)) | |
512 | return -EINVAL; | |
513 | ||
514 | return delete_partition(cxt, partnum); | |
515 | } | |
516 | ||
829f4206 | 517 | static void read_extended(struct fdisk_context *cxt, size_t ext) |
e2ee9178 | 518 | { |
e3661531 | 519 | size_t i; |
613596b3 | 520 | struct pte *pex, *pe; |
f540fe15 | 521 | struct dos_partition *p, *q; |
fcea064b | 522 | struct fdisk_dos_label *l = self_label(cxt); |
e2ee9178 | 523 | |
fcea064b | 524 | l->ext_index = ext; |
af0df606 | 525 | pex = self_pte(cxt, ext); |
b2b52925 KZ |
526 | if (!pex) { |
527 | DBG(LABEL, ul_debug("DOS: uninitialized pointer to %zu pex", ext)); | |
528 | return; | |
529 | } | |
6864f168 | 530 | pex->ex_entry = pex->pt_entry; |
e2ee9178 | 531 | |
6864f168 | 532 | p = pex->pt_entry; |
b44244cb | 533 | if (!dos_partition_get_start(p)) { |
ac1a559a | 534 | fdisk_warnx(cxt, _("Bad offset in primary extended partition.")); |
e2ee9178 DB |
535 | return; |
536 | } | |
537 | ||
88141067 | 538 | DBG(LABEL, ul_debug("DOS: Reading extended %zu", ext)); |
9c825fa0 | 539 | |
e2ee9178 | 540 | while (IS_EXTENDED (p->sys_ind)) { |
e3661531 | 541 | if (cxt->label->nparts_max >= MAXIMUM_PARTS) { |
e2ee9178 DB |
542 | /* This is not a Linux restriction, but |
543 | this program uses arrays of size MAXIMUM_PARTS. | |
544 | Do not try to `improve' this test. */ | |
af0df606 KZ |
545 | struct pte *pre = self_pte(cxt, |
546 | cxt->label->nparts_max - 1); | |
fcea064b | 547 | fdisk_warnx(cxt, |
829f4206 | 548 | _("Omitting partitions after #%zu. They will be deleted " |
fcea064b | 549 | "if you save this partition table."), |
e3661531 | 550 | cxt->label->nparts_max); |
fcea064b | 551 | |
b2b52925 KZ |
552 | if (pre) { |
553 | clear_partition(pre->ex_entry); | |
554 | partition_set_changed(cxt, | |
555 | cxt->label->nparts_max - 1, 1); | |
556 | } | |
e2ee9178 DB |
557 | return; |
558 | } | |
559 | ||
b2b52925 KZ |
560 | pe = self_pte(cxt, cxt->label->nparts_max); |
561 | if (!pe) | |
562 | return; | |
563 | ||
11fe0448 KZ |
564 | if (read_pte(cxt, cxt->label->nparts_max, l->ext_offset + |
565 | dos_partition_get_start(p))) | |
566 | return; | |
e2ee9178 | 567 | |
fcea064b KZ |
568 | if (!l->ext_offset) |
569 | l->ext_offset = dos_partition_get_start(p); | |
e2ee9178 | 570 | |
613596b3 | 571 | assert(pe->sectorbuffer); |
e8bf93de | 572 | q = p = mbr_get_partition(pe->sectorbuffer, 0); |
fcea064b | 573 | |
488cc17a KZ |
574 | for (i = 0; i < 4; i++, p++) { |
575 | if (!dos_partition_get_size(p)) | |
576 | continue; | |
577 | ||
e2ee9178 | 578 | if (IS_EXTENDED (p->sys_ind)) { |
6864f168 | 579 | if (pe->ex_entry) |
fcea064b KZ |
580 | fdisk_warnx(cxt, _( |
581 | "Extra link pointer in partition " | |
829f4206 | 582 | "table %zu."), |
fcea064b | 583 | cxt->label->nparts_max + 1); |
e2ee9178 | 584 | else |
6864f168 | 585 | pe->ex_entry = p; |
e2ee9178 | 586 | } else if (p->sys_ind) { |
6864f168 | 587 | if (pe->pt_entry) |
fcea064b KZ |
588 | fdisk_warnx(cxt, _( |
589 | "Ignoring extra data in partition " | |
829f4206 | 590 | "table %zu."), |
fcea064b | 591 | cxt->label->nparts_max + 1); |
e2ee9178 | 592 | else |
6864f168 | 593 | pe->pt_entry = p; |
e2ee9178 DB |
594 | } |
595 | } | |
596 | ||
597 | /* very strange code here... */ | |
6864f168 KZ |
598 | if (!pe->pt_entry) { |
599 | if (q != pe->ex_entry) | |
600 | pe->pt_entry = q; | |
e2ee9178 | 601 | else |
6864f168 | 602 | pe->pt_entry = q + 1; |
e2ee9178 | 603 | } |
6864f168 KZ |
604 | if (!pe->ex_entry) { |
605 | if (q != pe->pt_entry) | |
606 | pe->ex_entry = q; | |
e2ee9178 | 607 | else |
6864f168 | 608 | pe->ex_entry = q + 1; |
e2ee9178 DB |
609 | } |
610 | ||
6864f168 | 611 | p = pe->ex_entry; |
e3661531 | 612 | cxt->label->nparts_cur = ++cxt->label->nparts_max; |
613596b3 KZ |
613 | |
614 | DBG(LABEL, ul_debug("DOS: EBR[offset=%ju]: link: type=%x, start=%u, size=%u; " | |
615 | " data: type=%x, start=%u, size=%u", | |
616 | (uintmax_t) pe->offset, | |
617 | pe->ex_entry->sys_ind, | |
618 | dos_partition_get_start(pe->ex_entry), | |
619 | dos_partition_get_size(pe->ex_entry), | |
620 | pe->pt_entry->sys_ind, | |
621 | dos_partition_get_start(pe->pt_entry), | |
622 | dos_partition_get_size(pe->pt_entry))); | |
623 | ||
624 | } | |
625 | ||
626 | /* remove last empty EBR */ | |
627 | pe = self_pte(cxt, cxt->label->nparts_max - 1); | |
b2b52925 KZ |
628 | if (pe && |
629 | is_cleared_partition(pe->ex_entry) && | |
613596b3 KZ |
630 | is_cleared_partition(pe->pt_entry)) { |
631 | DBG(LABEL, ul_debug("DOS: EBR[offset=%ju]: empty, remove", (uintmax_t) pe->offset)); | |
632 | reset_pte(pe); | |
633 | cxt->label->nparts_max--; | |
634 | cxt->label->nparts_cur--; | |
e2ee9178 DB |
635 | } |
636 | ||
637 | /* remove empty links */ | |
638 | remove: | |
af0df606 | 639 | q = self_partition(cxt, 4); |
e3661531 | 640 | for (i = 4; i < cxt->label->nparts_max; i++) { |
af0df606 | 641 | p = self_partition(cxt, i); |
e2ee9178 | 642 | |
b2b52925 KZ |
643 | if (p && !dos_partition_get_size(p) && |
644 | (cxt->label->nparts_max > 5 || (q && q->sys_ind))) { | |
829f4206 | 645 | fdisk_info(cxt, _("omitting empty partition (%zu)"), i+1); |
e5e70463 | 646 | delete_partition(cxt, i); |
e2ee9178 DB |
647 | goto remove; /* numbering changed */ |
648 | } | |
649 | } | |
613596b3 KZ |
650 | |
651 | DBG(LABEL, ul_debug("DOS: nparts_max: %zu", cxt->label->nparts_max)); | |
e2ee9178 DB |
652 | } |
653 | ||
9ffeb235 | 654 | static int dos_create_disklabel(struct fdisk_context *cxt) |
e2ee9178 | 655 | { |
95085ec5 KZ |
656 | unsigned int id = 0; |
657 | int rc, has_id = 0; | |
3d919d95 | 658 | struct fdisk_dos_label *l; |
e2ee9178 | 659 | |
9ffeb235 KZ |
660 | assert(cxt); |
661 | assert(cxt->label); | |
aa36c2cf | 662 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 663 | |
88141067 | 664 | DBG(LABEL, ul_debug("DOS: creating new disklabel")); |
9c825fa0 | 665 | |
95085ec5 KZ |
666 | if (cxt->script) { |
667 | char *end = NULL; | |
668 | const char *s = fdisk_script_get_header(cxt->script, "label-id"); | |
669 | ||
670 | if (s) { | |
671 | errno = 0; | |
672 | id = strtol(s, &end, 16); | |
168950e3 | 673 | if (!errno && end && s < end) { |
95085ec5 | 674 | has_id = 1; |
168950e3 KZ |
675 | DBG(LABEL, ul_debug("DOS: re-use ID from script (0x%08x)", id)); |
676 | } else | |
677 | DBG(LABEL, ul_debug("DOS: failed to parse label=id '%s'", s)); | |
95085ec5 KZ |
678 | } |
679 | } | |
680 | ||
e2ee9178 | 681 | /* random disk signature */ |
168950e3 KZ |
682 | if (!has_id) { |
683 | DBG(LABEL, ul_debug("DOS: generate new ID")); | |
95085ec5 | 684 | random_get_bytes(&id, sizeof(id)); |
168950e3 | 685 | } |
e2ee9178 | 686 | |
3457d90e KZ |
687 | if (fdisk_has_protected_bootbits(cxt)) |
688 | rc = fdisk_init_firstsector_buffer(cxt, 0, MBR_PT_BOOTBITS_SIZE); | |
689 | else | |
690 | rc = fdisk_init_firstsector_buffer(cxt, 0, 0); | |
7c2cfb18 KZ |
691 | if (rc) |
692 | return rc; | |
3d919d95 KZ |
693 | dos_init(cxt); |
694 | ||
695 | l = self_label(cxt); | |
e2ee9178 DB |
696 | |
697 | /* Generate an MBR ID for this disk */ | |
67987b47 | 698 | mbr_set_id(cxt->firstsector, id); |
3d919d95 KZ |
699 | l->non_pt_changed = 1; |
700 | fdisk_label_set_changed(cxt->label, 1); | |
e2ee9178 DB |
701 | |
702 | /* Put MBR signature */ | |
67987b47 | 703 | mbr_set_magic(cxt->firstsector); |
ac1a559a | 704 | |
0477369a | 705 | fdisk_info(cxt, _("Created a new DOS disklabel with disk " |
ac1a559a | 706 | "identifier 0x%08x."), id); |
a71601af | 707 | return 0; |
e2ee9178 DB |
708 | } |
709 | ||
35b1f0a4 | 710 | static int dos_set_disklabel_id(struct fdisk_context *cxt) |
e2ee9178 | 711 | { |
0a49e5d5 KZ |
712 | char *end = NULL, *str = NULL; |
713 | unsigned int id, old; | |
35b1f0a4 | 714 | struct fdisk_dos_label *l; |
0a49e5d5 | 715 | int rc; |
e2ee9178 | 716 | |
35b1f0a4 KZ |
717 | assert(cxt); |
718 | assert(cxt->label); | |
aa36c2cf | 719 | assert(fdisk_is_label(cxt, DOS)); |
35b1f0a4 | 720 | |
88141067 | 721 | DBG(LABEL, ul_debug("DOS: setting Id")); |
9c825fa0 | 722 | |
35b1f0a4 | 723 | l = self_label(cxt); |
0a49e5d5 KZ |
724 | old = mbr_get_id(cxt->firstsector); |
725 | rc = fdisk_ask_string(cxt, | |
a0862e26 | 726 | _("Enter the new disk identifier"), &str); |
0a49e5d5 KZ |
727 | if (rc) |
728 | return rc; | |
e2ee9178 | 729 | |
0a49e5d5 KZ |
730 | errno = 0; |
731 | id = strtoul(str, &end, 0); | |
732 | if (errno || str == end || (end && *end)) { | |
733 | fdisk_warnx(cxt, _("Incorrect value.")); | |
734 | return -EINVAL; | |
735 | } | |
e2ee9178 | 736 | |
e2ee9178 | 737 | |
0a49e5d5 | 738 | mbr_set_id(cxt->firstsector, id); |
8b3d9241 | 739 | l->non_pt_changed = 1; |
bddd84e7 | 740 | fdisk_label_set_changed(cxt->label, 1); |
ac1a559a | 741 | |
0477369a | 742 | fdisk_info(cxt, _("Disk identifier changed from 0x%08x to 0x%08x."), |
ac1a559a | 743 | old, id); |
0a49e5d5 | 744 | return 0; |
e2ee9178 DB |
745 | } |
746 | ||
9a5e29e9 KZ |
747 | static void get_partition_table_geometry(struct fdisk_context *cxt, |
748 | unsigned int *ph, unsigned int *ps) | |
749 | { | |
67987b47 | 750 | unsigned char *bufp = cxt->firstsector; |
f540fe15 | 751 | struct dos_partition *p; |
9a5e29e9 KZ |
752 | int i, h, s, hh, ss; |
753 | int first = 1; | |
754 | int bad = 0; | |
755 | ||
756 | hh = ss = 0; | |
60c1b036 | 757 | for (i = 0; i < 4; i++) { |
e8bf93de | 758 | p = mbr_get_partition(bufp, i); |
9a5e29e9 | 759 | if (p->sys_ind != 0) { |
da967236 KZ |
760 | h = p->eh + 1; |
761 | s = (p->es & 077); | |
9a5e29e9 KZ |
762 | if (first) { |
763 | hh = h; | |
764 | ss = s; | |
765 | first = 0; | |
766 | } else if (hh != h || ss != s) | |
767 | bad = 1; | |
768 | } | |
769 | } | |
770 | ||
771 | if (!first && !bad) { | |
772 | *ph = hh; | |
773 | *ps = ss; | |
774 | } | |
cf3808e4 | 775 | |
88141067 | 776 | DBG(LABEL, ul_debug("DOS PT geometry: heads=%u, sectors=%u", *ph, *ps)); |
9a5e29e9 KZ |
777 | } |
778 | ||
9ffeb235 | 779 | static int dos_reset_alignment(struct fdisk_context *cxt) |
cf3808e4 | 780 | { |
9ffeb235 KZ |
781 | assert(cxt); |
782 | assert(cxt->label); | |
aa36c2cf | 783 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 784 | |
cf3808e4 | 785 | /* overwrite necessary stuff by DOS deprecated stuff */ |
852ce62b | 786 | if (is_dos_compatible(cxt)) { |
9e930041 | 787 | DBG(LABEL, ul_debug("DOS: resetting alignment for DOS-compatible PT")); |
cf3808e4 KZ |
788 | if (cxt->geom.sectors) |
789 | cxt->first_lba = cxt->geom.sectors; /* usually 63 */ | |
790 | ||
791 | cxt->grain = cxt->sector_size; /* usually 512 */ | |
792 | } | |
cf3808e4 KZ |
793 | |
794 | return 0; | |
795 | } | |
9a5e29e9 | 796 | |
9ed268d0 KZ |
797 | /* TODO: move to include/pt-dos.h and share with libblkid */ |
798 | #define AIX_MAGIC_STRING "\xC9\xC2\xD4\xC1" | |
799 | #define AIX_MAGIC_STRLEN (sizeof(AIX_MAGIC_STRING) - 1) | |
800 | ||
9ffeb235 | 801 | static int dos_probe_label(struct fdisk_context *cxt) |
e2ee9178 | 802 | { |
e3661531 | 803 | size_t i; |
9a5e29e9 | 804 | unsigned int h = 0, s = 0; |
e2ee9178 | 805 | |
e3661531 KZ |
806 | assert(cxt); |
807 | assert(cxt->label); | |
aa36c2cf | 808 | assert(fdisk_is_label(cxt, DOS)); |
e3661531 | 809 | |
9ed268d0 KZ |
810 | /* ignore disks with AIX magic number */ |
811 | if (memcmp(cxt->firstsector, AIX_MAGIC_STRING, AIX_MAGIC_STRLEN) == 0) | |
812 | return 0; | |
813 | ||
67987b47 | 814 | if (!mbr_is_valid_magic(cxt->firstsector)) |
e2ee9178 DB |
815 | return 0; |
816 | ||
e53ced85 | 817 | dos_init(cxt); |
e2ee9178 | 818 | |
9a5e29e9 KZ |
819 | get_partition_table_geometry(cxt, &h, &s); |
820 | if (h && s) { | |
821 | cxt->geom.heads = h; | |
822 | cxt->geom.sectors = s; | |
502dd53c KZ |
823 | |
824 | if (fdisk_has_user_device_geometry(cxt)) | |
825 | fdisk_apply_user_device_properties(cxt); | |
9a5e29e9 KZ |
826 | } |
827 | ||
e2ee9178 | 828 | for (i = 0; i < 4; i++) { |
af0df606 | 829 | struct pte *pe = self_pte(cxt, i); |
e2ee9178 | 830 | |
b2b52925 | 831 | assert(pe); |
d0a870c5 | 832 | if (is_used_partition(pe->pt_entry)) |
e3661531 KZ |
833 | cxt->label->nparts_cur++; |
834 | ||
6864f168 | 835 | if (IS_EXTENDED (pe->pt_entry->sys_ind)) { |
e3661531 | 836 | if (cxt->label->nparts_max != 4) |
fcea064b | 837 | fdisk_warnx(cxt, _( |
829f4206 | 838 | "Ignoring extra extended partition %zu"), |
fcea064b | 839 | i + 1); |
e2ee9178 | 840 | else |
7737f698 | 841 | read_extended(cxt, i); |
e2ee9178 DB |
842 | } |
843 | } | |
844 | ||
e3661531 | 845 | for (i = 3; i < cxt->label->nparts_max; i++) { |
af0df606 | 846 | struct pte *pe = self_pte(cxt, i); |
bcddbe96 | 847 | struct fdisk_dos_label *l = self_label(cxt); |
e2ee9178 | 848 | |
b2b52925 | 849 | assert(pe); |
67188340 | 850 | if (!mbr_is_valid_magic(pe->sectorbuffer)) { |
fcea064b | 851 | fdisk_info(cxt, _( |
bcddbe96 KZ |
852 | "Invalid flag 0x%02x%02x of EBR (for partition %zu) will " |
853 | "be corrected by w(rite)."), | |
6fe71269 KZ |
854 | pe->sectorbuffer[510], |
855 | pe->sectorbuffer[511], | |
856 | i + 1); | |
bcddbe96 KZ |
857 | partition_set_changed(cxt, i, 1); |
858 | ||
859 | /* mark also extended as changed to update the first EBR | |
860 | * in situation that there is no logical partitions at all */ | |
861 | partition_set_changed(cxt, l->ext_index, 1); | |
e2ee9178 DB |
862 | } |
863 | } | |
864 | ||
865 | return 1; | |
866 | } | |
867 | ||
e53ced85 | 868 | static void set_partition(struct fdisk_context *cxt, |
0073a4cf KZ |
869 | int i, int doext, fdisk_sector_t start, |
870 | fdisk_sector_t stop, int sysid, int boot) | |
9dea2923 | 871 | { |
af0df606 | 872 | struct pte *pe = self_pte(cxt, i); |
f540fe15 | 873 | struct dos_partition *p; |
0073a4cf | 874 | fdisk_sector_t offset; |
9dea2923 | 875 | |
ecf40cda KZ |
876 | assert(!FDISK_IS_UNDEF(start)); |
877 | assert(!FDISK_IS_UNDEF(stop)); | |
b2b52925 | 878 | assert(pe); |
80063996 | 879 | |
9dea2923 | 880 | if (doext) { |
fcea064b | 881 | struct fdisk_dos_label *l = self_label(cxt); |
af0df606 | 882 | p = pe->ex_entry; |
fcea064b | 883 | offset = l->ext_offset; |
9dea2923 | 884 | } else { |
af0df606 KZ |
885 | p = pe->pt_entry; |
886 | offset = pe->offset; | |
9dea2923 | 887 | } |
a60087aa | 888 | |
1bb387bd | 889 | DBG(LABEL, ul_debug("DOS: setting partition %d%s, offset=%zu, start=%zu, size=%zu, sysid=%02x", |
a60087aa | 890 | i, doext ? " [extended]" : "", |
613596b3 KZ |
891 | (size_t) offset, |
892 | (size_t) (start - offset), | |
893 | (size_t) (stop - start + 1), | |
894 | sysid)); | |
a60087aa | 895 | |
50f7514e | 896 | p->boot_ind = boot ? ACTIVE_FLAG : 0; |
9dea2923 | 897 | p->sys_ind = sysid; |
b44244cb KZ |
898 | dos_partition_set_start(p, start - offset); |
899 | dos_partition_set_size(p, stop - start + 1); | |
9dea2923 | 900 | |
852ce62b | 901 | if (is_dos_compatible(cxt) && (start/(cxt->geom.sectors*cxt->geom.heads) > 1023)) |
24cd580b | 902 | start = cxt->geom.heads*cxt->geom.sectors*1024 - 1; |
da967236 | 903 | set_hsc(p->bh, p->bs, p->bc, start); |
852ce62b | 904 | if (is_dos_compatible(cxt) && (stop/(cxt->geom.sectors*cxt->geom.heads) > 1023)) |
24cd580b | 905 | stop = cxt->geom.heads*cxt->geom.sectors*1024 - 1; |
da967236 | 906 | set_hsc(p->eh, p->es, p->ec, stop); |
af0df606 | 907 | partition_set_changed(cxt, i, 1); |
9dea2923 DB |
908 | } |
909 | ||
0073a4cf KZ |
910 | static fdisk_sector_t get_unused_start(struct fdisk_context *cxt, |
911 | int part_n, fdisk_sector_t start, | |
912 | fdisk_sector_t first[], fdisk_sector_t last[]) | |
9dea2923 | 913 | { |
e3661531 | 914 | size_t i; |
9dea2923 | 915 | |
e3661531 | 916 | for (i = 0; i < cxt->label->nparts_max; i++) { |
0073a4cf | 917 | fdisk_sector_t lastplusoff; |
af0df606 | 918 | struct pte *pe = self_pte(cxt, i); |
9dea2923 | 919 | |
b2b52925 | 920 | assert(pe); |
af0df606 | 921 | if (start == pe->offset) |
cf3808e4 KZ |
922 | start += cxt->first_lba; |
923 | lastplusoff = last[i] + ((part_n < 4) ? 0 : cxt->first_lba); | |
9dea2923 DB |
924 | if (start >= first[i] && start <= lastplusoff) |
925 | start = lastplusoff + 1; | |
926 | } | |
927 | ||
928 | return start; | |
929 | } | |
930 | ||
e3661531 | 931 | static void fill_bounds(struct fdisk_context *cxt, |
0073a4cf | 932 | fdisk_sector_t *first, fdisk_sector_t *last) |
cc0c4e56 | 933 | { |
e3661531 | 934 | size_t i; |
af0df606 | 935 | struct pte *pe = self_pte(cxt, 0); |
f540fe15 | 936 | struct dos_partition *p; |
cc0c4e56 | 937 | |
b2b52925 | 938 | assert(pe); |
e3661531 | 939 | for (i = 0; i < cxt->label->nparts_max; pe++,i++) { |
6864f168 | 940 | p = pe->pt_entry; |
d0a870c5 | 941 | if (is_cleared_partition(p) || IS_EXTENDED (p->sys_ind)) { |
cc0c4e56 KZ |
942 | first[i] = 0xffffffff; |
943 | last[i] = 0; | |
944 | } else { | |
61eaad50 | 945 | first[i] = get_abs_partition_start(pe); |
1b92d076 | 946 | last[i] = get_abs_partition_end(pe); |
cc0c4e56 KZ |
947 | } |
948 | } | |
949 | } | |
950 | ||
77d6a70a | 951 | static int get_start_from_user( struct fdisk_context *cxt, |
0073a4cf KZ |
952 | fdisk_sector_t *start, |
953 | fdisk_sector_t low, | |
954 | fdisk_sector_t dflt, | |
955 | fdisk_sector_t limit, | |
77d6a70a | 956 | struct fdisk_partition *pa) |
9dea2923 | 957 | { |
77d6a70a KZ |
958 | assert(start); |
959 | ||
9e930041 | 960 | /* try to use template from 'pa' */ |
77d6a70a KZ |
961 | if (pa && pa->start_follow_default) |
962 | *start = dflt; | |
963 | ||
ecf40cda | 964 | else if (pa && fdisk_partition_has_start(pa)) { |
88141067 | 965 | DBG(LABEL, ul_debug("DOS: start: wanted=%ju, low=%ju, limit=%ju", |
20f878fe | 966 | (uintmax_t) pa->start, (uintmax_t) low, (uintmax_t) limit)); |
77d6a70a | 967 | *start = pa->start; |
20f878fe | 968 | if (*start < low || *start > limit) { |
a3e37fa7 KZ |
969 | fdisk_warnx(cxt, _("Start sector %ju out of range."), |
970 | (uintmax_t) *start); | |
77d6a70a | 971 | return -ERANGE; |
20f878fe | 972 | } |
77d6a70a KZ |
973 | } else { |
974 | /* ask user by dialog */ | |
975 | struct fdisk_ask *ask = fdisk_new_ask(); | |
976 | int rc; | |
977 | ||
978 | if (!ask) | |
979 | return -ENOMEM; | |
980 | fdisk_ask_set_query(ask, | |
6a632136 | 981 | fdisk_use_cylinders(cxt) ? |
77d6a70a KZ |
982 | _("First cylinder") : _("First sector")); |
983 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_NUMBER); | |
984 | fdisk_ask_number_set_low(ask, fdisk_cround(cxt, low)); | |
985 | fdisk_ask_number_set_default(ask, fdisk_cround(cxt, dflt)); | |
986 | fdisk_ask_number_set_high(ask, fdisk_cround(cxt, limit)); | |
987 | ||
988 | rc = fdisk_do_ask(cxt, ask); | |
989 | *start = fdisk_ask_number_get_result(ask); | |
a3d83488 | 990 | fdisk_unref_ask(ask); |
77d6a70a KZ |
991 | if (rc) |
992 | return rc; | |
6a632136 | 993 | if (fdisk_use_cylinders(cxt)) { |
77d6a70a | 994 | *start = (*start - 1) |
6a632136 | 995 | * fdisk_get_units_per_sector(cxt); |
77d6a70a KZ |
996 | if (*start < low) |
997 | *start = low; | |
998 | } | |
999 | } | |
1000 | ||
c3bc7483 | 1001 | DBG(LABEL, ul_debug("DOS: start is %ju", (uintmax_t) *start)); |
77d6a70a KZ |
1002 | return 0; |
1003 | } | |
1004 | ||
0073a4cf | 1005 | static fdisk_sector_t get_possible_last(struct fdisk_context *cxt, size_t n) |
333c3761 | 1006 | { |
0073a4cf | 1007 | fdisk_sector_t limit; |
333c3761 KZ |
1008 | |
1009 | if (n >= 4) { | |
1010 | /* logical partitions */ | |
1011 | struct fdisk_dos_label *l = self_label(cxt); | |
1012 | struct pte *ext_pe = l->ext_offset ? self_pte(cxt, l->ext_index) : NULL; | |
1013 | ||
1014 | if (!ext_pe) | |
1015 | return 0; | |
1016 | limit = get_abs_partition_end(ext_pe); | |
1017 | } else { | |
1018 | /* primary partitions */ | |
1019 | if (fdisk_use_cylinders(cxt) || !cxt->total_sectors) | |
1020 | limit = cxt->geom.heads * cxt->geom.sectors * cxt->geom.cylinders - 1; | |
1021 | else | |
1022 | limit = cxt->total_sectors - 1; | |
1023 | ||
1024 | if (limit > UINT_MAX) | |
1025 | limit = UINT_MAX; | |
1026 | } | |
1027 | ||
1028 | DBG(LABEL, ul_debug("DOS: last possible sector for #%zu is %ju", | |
1029 | n, (uintmax_t) limit)); | |
1030 | return limit; | |
1031 | } | |
1032 | ||
1033 | /* returns last free sector for area addressed by @start, the first[] and | |
1034 | * last[] are fill_bounds() results */ | |
0073a4cf KZ |
1035 | static fdisk_sector_t get_unused_last(struct fdisk_context *cxt, size_t n, |
1036 | fdisk_sector_t start, | |
71177ab8 | 1037 | fdisk_sector_t first[]) |
333c3761 KZ |
1038 | { |
1039 | size_t i; | |
0073a4cf | 1040 | fdisk_sector_t limit = get_possible_last(cxt, n); |
333c3761 KZ |
1041 | |
1042 | for (i = 0; i < cxt->label->nparts_max; i++) { | |
1043 | struct pte *pe = self_pte(cxt, i); | |
1044 | ||
b2b52925 | 1045 | assert(pe); |
333c3761 KZ |
1046 | if (start < pe->offset && limit >= pe->offset) |
1047 | limit = pe->offset - 1; | |
1048 | if (start < first[i] && limit >= first[i]) | |
1049 | limit = first[i] - 1; | |
1050 | } | |
1051 | ||
1052 | DBG(LABEL, ul_debug("DOS: unused sector for #%zu is %ju", | |
1053 | n, (uintmax_t) limit)); | |
1054 | return limit; | |
1055 | } | |
1056 | ||
77d6a70a KZ |
1057 | static int add_partition(struct fdisk_context *cxt, size_t n, |
1058 | struct fdisk_partition *pa) | |
1059 | { | |
1060 | int sys, read = 0, rc, isrel = 0; | |
e3661531 | 1061 | size_t i; |
fcea064b | 1062 | struct fdisk_dos_label *l = self_label(cxt); |
af0df606 | 1063 | struct dos_partition *p = self_partition(cxt, n); |
1b92d076 | 1064 | struct pte *ext_pe = l->ext_offset ? self_pte(cxt, l->ext_index) : NULL; |
7c43fd23 KZ |
1065 | struct fdisk_ask *ask = NULL; |
1066 | ||
0073a4cf | 1067 | fdisk_sector_t start, stop = 0, limit, temp, |
e3661531 KZ |
1068 | first[cxt->label->nparts_max], |
1069 | last[cxt->label->nparts_max]; | |
9dea2923 | 1070 | |
88141067 | 1071 | DBG(LABEL, ul_debug("DOS: adding partition %zu", n)); |
9c825fa0 | 1072 | |
a745611d | 1073 | sys = pa && pa->type ? pa->type->code : MBR_LINUX_DATA_PARTITION; |
ed470672 | 1074 | |
b2b52925 | 1075 | if (p && is_used_partition(p)) { |
829f4206 | 1076 | fdisk_warnx(cxt, _("Partition %zu is already defined. " |
e39966c6 | 1077 | "Delete it before re-adding it."), |
829f4206 | 1078 | n + 1); |
8254c3a5 | 1079 | return -EINVAL; |
9dea2923 | 1080 | } |
e3661531 | 1081 | fill_bounds(cxt, first, last); |
333c3761 KZ |
1082 | limit = get_possible_last(cxt, n); |
1083 | ||
9dea2923 | 1084 | if (n < 4) { |
aa36c2cf | 1085 | if (cxt->parent && fdisk_is_label(cxt->parent, GPT)) |
433d05ff | 1086 | start = 1; /* Bad boy modifies hybrid MBR */ |
bcdeacd7 | 1087 | else { |
ecf40cda KZ |
1088 | if (cxt->script && pa && fdisk_partition_has_start(pa) |
1089 | && pa->start < cxt->first_lba | |
bcdeacd7 KZ |
1090 | && pa->start >= 1) |
1091 | fdisk_set_first_lba(cxt, 1); | |
1092 | ||
433d05ff | 1093 | start = cxt->first_lba; |
bcdeacd7 | 1094 | } |
433d05ff | 1095 | |
fcea064b | 1096 | if (l->ext_offset) { |
1b92d076 | 1097 | assert(ext_pe); |
fcea064b | 1098 | first[l->ext_index] = l->ext_offset; |
1b92d076 | 1099 | last[l->ext_index] = get_abs_partition_end(ext_pe); |
9dea2923 DB |
1100 | } |
1101 | } else { | |
1b92d076 | 1102 | assert(ext_pe); |
bcdeacd7 | 1103 | |
ecf40cda KZ |
1104 | if (cxt->script && pa && fdisk_partition_has_start(pa) |
1105 | && pa->start >= l->ext_offset | |
bcdeacd7 KZ |
1106 | && pa->start < l->ext_offset + cxt->first_lba) |
1107 | fdisk_set_first_lba(cxt, 1); | |
1108 | ||
1109 | start = l->ext_offset + cxt->first_lba; | |
9dea2923 | 1110 | } |
333c3761 | 1111 | |
6a632136 | 1112 | if (fdisk_use_cylinders(cxt)) |
80063996 | 1113 | for (i = 0; i < cxt->label->nparts_max; i++) { |
77d6a70a | 1114 | first[i] = (fdisk_cround(cxt, first[i]) - 1) |
6a632136 | 1115 | * fdisk_get_units_per_sector(cxt); |
80063996 | 1116 | } |
9dea2923 | 1117 | |
0e07540d KZ |
1118 | /* |
1119 | * Ask for first sector | |
1120 | */ | |
9dea2923 | 1121 | do { |
0073a4cf | 1122 | fdisk_sector_t dflt, aligned; |
9dea2923 DB |
1123 | |
1124 | temp = start; | |
cf3808e4 | 1125 | dflt = start = get_unused_start(cxt, n, start, first, last); |
9dea2923 | 1126 | |
ecf40cda | 1127 | if (n >= 4 && pa && fdisk_partition_has_start(pa) && cxt->script |
bcdeacd7 KZ |
1128 | && cxt->first_lba > 1 |
1129 | && temp == start - cxt->first_lba) { | |
1130 | fdisk_set_first_lba(cxt, 1); | |
1131 | start = pa->start; | |
1132 | } | |
1133 | ||
9dea2923 DB |
1134 | /* the default sector should be aligned and unused */ |
1135 | do { | |
9475cc78 | 1136 | aligned = fdisk_align_lba_in_range(cxt, dflt, dflt, limit); |
cf3808e4 | 1137 | dflt = get_unused_start(cxt, n, aligned, first, last); |
9dea2923 DB |
1138 | } while (dflt != aligned && dflt > aligned && dflt < limit); |
1139 | ||
1140 | if (dflt >= limit) | |
1141 | dflt = start; | |
1142 | if (start > limit) | |
1143 | break; | |
6a632136 | 1144 | if (start >= temp + fdisk_get_units_per_sector(cxt) |
fcea064b | 1145 | && read) { |
ac1a559a | 1146 | fdisk_info(cxt, _("Sector %llu is already allocated."), |
fcea064b | 1147 | temp); |
9dea2923 DB |
1148 | temp = start; |
1149 | read = 0; | |
ecf40cda KZ |
1150 | if (pa && (fdisk_partition_has_start(pa) || |
1151 | pa->start_follow_default)) | |
3186f4a9 | 1152 | break; |
9dea2923 | 1153 | } |
0e07540d | 1154 | |
9dea2923 | 1155 | if (!read && start == temp) { |
77d6a70a | 1156 | rc = get_start_from_user(cxt, &start, temp, dflt, limit, pa); |
0e07540d KZ |
1157 | if (rc) |
1158 | return rc; | |
9dea2923 DB |
1159 | read = 1; |
1160 | } | |
1161 | } while (start != temp || !read); | |
0e07540d | 1162 | |
613596b3 KZ |
1163 | if (n == 4) { |
1164 | /* The first EBR is stored at begin of the extended partition */ | |
1165 | struct pte *pe = self_pte(cxt, n); | |
613596b3 | 1166 | |
b2b52925 KZ |
1167 | assert(pe); |
1168 | pe->offset = l->ext_offset; | |
613596b3 KZ |
1169 | } else if (n > 4) { |
1170 | /* The second (and another) EBR */ | |
af0df606 | 1171 | struct pte *pe = self_pte(cxt, n); |
9dea2923 | 1172 | |
b2b52925 | 1173 | assert(pe); |
cf3808e4 | 1174 | pe->offset = start - cxt->first_lba; |
fcea064b | 1175 | if (pe->offset == l->ext_offset) { /* must be corrected */ |
9dea2923 | 1176 | pe->offset++; |
cf3808e4 | 1177 | if (cxt->first_lba == 1) |
9dea2923 DB |
1178 | start++; |
1179 | } | |
1180 | } | |
1181 | ||
71177ab8 | 1182 | limit = get_unused_last(cxt, n, start, first); |
9dea2923 | 1183 | |
9dea2923 | 1184 | if (start > limit) { |
eed0e7b9 | 1185 | fdisk_warnx(cxt, _("No free sectors available.")); |
8254c3a5 | 1186 | return -ENOSPC; |
9dea2923 | 1187 | } |
77d6a70a KZ |
1188 | |
1189 | /* | |
1190 | * Ask for last sector | |
1191 | */ | |
1192 | if (fdisk_cround(cxt, start) == fdisk_cround(cxt, limit)) | |
1193 | stop = limit; | |
1194 | else if (pa && pa->end_follow_default) | |
9dea2923 | 1195 | stop = limit; |
ecf40cda | 1196 | else if (pa && fdisk_partition_has_size(pa)) { |
7c43fd23 | 1197 | stop = start + pa->size; |
bcdeacd7 | 1198 | isrel = pa->size_explicit ? 0 : 1; |
980cc4a1 | 1199 | if ((!isrel || !alignment_required(cxt)) && stop > start) |
7c43fd23 | 1200 | stop -= 1; |
9dea2923 | 1201 | } else { |
77d6a70a | 1202 | /* ask user by dialog */ |
7c43fd23 KZ |
1203 | for (;;) { |
1204 | if (!ask) | |
1205 | ask = fdisk_new_ask(); | |
1206 | else | |
1207 | fdisk_reset_ask(ask); | |
1208 | if (!ask) | |
1209 | return -ENOMEM; | |
7c43fd23 KZ |
1210 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_OFFSET); |
1211 | ||
1212 | if (fdisk_use_cylinders(cxt)) { | |
1213 | fdisk_ask_set_query(ask, _("Last cylinder, +cylinders or +size{K,M,G,T,P}")); | |
1214 | fdisk_ask_number_set_unit(ask, | |
1215 | cxt->sector_size * | |
1216 | fdisk_get_units_per_sector(cxt)); | |
1217 | } else { | |
1218 | fdisk_ask_set_query(ask, _("Last sector, +sectors or +size{K,M,G,T,P}")); | |
1219 | fdisk_ask_number_set_unit(ask,cxt->sector_size); | |
1220 | } | |
9dea2923 | 1221 | |
7c43fd23 KZ |
1222 | fdisk_ask_number_set_low(ask, fdisk_cround(cxt, start)); |
1223 | fdisk_ask_number_set_default(ask, fdisk_cround(cxt, limit)); | |
1224 | fdisk_ask_number_set_high(ask, fdisk_cround(cxt, limit)); | |
1225 | fdisk_ask_number_set_base(ask, fdisk_cround(cxt, start)); /* base for relative input */ | |
9dea2923 | 1226 | |
7c43fd23 KZ |
1227 | rc = fdisk_do_ask(cxt, ask); |
1228 | if (rc) | |
1229 | goto done; | |
0e07540d | 1230 | |
7c43fd23 KZ |
1231 | stop = fdisk_ask_number_get_result(ask); |
1232 | isrel = fdisk_ask_number_is_relative(ask); | |
535748a6 KZ |
1233 | if (fdisk_use_cylinders(cxt)) { |
1234 | stop = stop * fdisk_get_units_per_sector(cxt) - 1; | |
1235 | if (stop >limit) | |
1236 | stop = limit; | |
1237 | } | |
7c43fd23 | 1238 | |
8c73e509 KZ |
1239 | if (stop >= start && stop <= limit) |
1240 | break; | |
8c73e509 | 1241 | fdisk_warnx(cxt, _("Value out of range.")); |
7c43fd23 | 1242 | } |
77d6a70a KZ |
1243 | } |
1244 | ||
980cc4a1 | 1245 | DBG(LABEL, ul_debug("DOS: raw stop: %ju [limit %ju]", (uintmax_t) stop, (uintmax_t) limit)); |
bcdeacd7 | 1246 | |
77d6a70a KZ |
1247 | if (stop > limit) |
1248 | stop = limit; | |
1249 | ||
d527d2dd | 1250 | if (isrel && stop - start < (cxt->grain / fdisk_get_sector_size(cxt))) { |
7c43fd23 | 1251 | /* Don't try to be smart on very small partitions and don't align so small sizes */ |
68fe4b28 | 1252 | isrel = 0; |
09a4ca5e KZ |
1253 | if (stop > start) |
1254 | stop -= 1; | |
980cc4a1 | 1255 | DBG(LABEL, ul_debug("DOS: don't align end of tiny partition [start=%ju, stop=%ju, grain=%lu]", |
fdbd7bb9 | 1256 | (uintmax_t)start, (uintmax_t)stop, cxt->grain)); |
d527d2dd | 1257 | } |
68fe4b28 | 1258 | |
74ce680a SK |
1259 | if (stop < limit && isrel && alignment_required(cxt)) { |
1260 | /* the last sector has not been exactly requested (but | |
1261 | * defined by +size{K,M,G} convention), so be smart and | |
1262 | * align the end of the partition. The next partition | |
1263 | * will start at phy.block boundary. | |
1264 | */ | |
1265 | stop = fdisk_align_lba_in_range(cxt, stop, start, limit); | |
1266 | if (stop > start) | |
1267 | stop -= 1; | |
1268 | if (stop > limit) | |
1269 | stop = limit; | |
1270 | DBG(LABEL, ul_debug("DOS: aligned stop: %ju", (uintmax_t) stop)); | |
9dea2923 DB |
1271 | } |
1272 | ||
4d156d92 | 1273 | set_partition(cxt, n, 0, start, stop, sys, fdisk_partition_is_bootable(pa)); |
af0df606 KZ |
1274 | if (n > 4) { |
1275 | struct pte *pe = self_pte(cxt, n); | |
b2b52925 KZ |
1276 | |
1277 | assert(pe); | |
bb58112e | 1278 | set_partition(cxt, n - 1, 1, pe->offset, stop, |
7bc31ada | 1279 | MBR_DOS_EXTENDED_PARTITION, 0); |
af0df606 | 1280 | } |
9dea2923 | 1281 | |
0ecf3ab5 KZ |
1282 | /* report */ |
1283 | { | |
1284 | struct fdisk_parttype *t = | |
1285 | fdisk_label_get_parttype_from_code(cxt->label, sys); | |
1286 | fdisk_info_new_partition(cxt, n + 1, start, stop, t); | |
dfc6db2a | 1287 | fdisk_unref_parttype(t); |
0ecf3ab5 KZ |
1288 | } |
1289 | ||
1290 | ||
bb58112e | 1291 | if (IS_EXTENDED(sys)) { |
af0df606 | 1292 | struct pte *pen = self_pte(cxt, n); |
9dea2923 | 1293 | |
b2b52925 | 1294 | assert(pen); |
fcea064b | 1295 | l->ext_index = n; |
613596b3 | 1296 | l->ext_offset = start; |
6864f168 | 1297 | pen->ex_entry = p; |
9dea2923 | 1298 | } |
8254c3a5 | 1299 | |
bddd84e7 | 1300 | fdisk_label_set_changed(cxt->label, 1); |
7c43fd23 | 1301 | rc = 0; |
7c43fd23 KZ |
1302 | done: |
1303 | fdisk_unref_ask(ask); | |
1304 | return rc; | |
9dea2923 DB |
1305 | } |
1306 | ||
c3bc7483 KZ |
1307 | static int add_logical(struct fdisk_context *cxt, |
1308 | struct fdisk_partition *pa, | |
1309 | size_t *partno) | |
9dea2923 | 1310 | { |
613596b3 | 1311 | struct pte *pe; |
28d79d9b | 1312 | int rc; |
af0df606 | 1313 | |
e3661531 | 1314 | assert(cxt); |
c3bc7483 | 1315 | assert(partno); |
e3661531 | 1316 | assert(cxt->label); |
613596b3 | 1317 | assert(self_label(cxt)->ext_offset); |
e3661531 | 1318 | |
613596b3 KZ |
1319 | DBG(LABEL, ul_debug("DOS: nparts max: %zu", cxt->label->nparts_max)); |
1320 | pe = self_pte(cxt, cxt->label->nparts_max); | |
b2b52925 | 1321 | assert(pe); |
af0df606 | 1322 | |
613596b3 | 1323 | if (!pe->sectorbuffer) { |
af0df606 KZ |
1324 | pe->sectorbuffer = calloc(1, cxt->sector_size); |
1325 | if (!pe->sectorbuffer) | |
1326 | return -ENOMEM; | |
613596b3 KZ |
1327 | DBG(LABEL, ul_debug("DOS: logical: %zu: new EBR sector buffer %p", |
1328 | cxt->label->nparts_max, pe->sectorbuffer)); | |
ddec0e40 | 1329 | pe->private_sectorbuffer = 1; |
9dea2923 | 1330 | } |
613596b3 KZ |
1331 | pe->pt_entry = mbr_get_partition(pe->sectorbuffer, 0); |
1332 | pe->ex_entry = pe->pt_entry + 1; | |
1333 | pe->offset = 0; | |
1334 | partition_set_changed(cxt, cxt->label->nparts_max, 1); | |
1335 | ||
1336 | cxt->label->nparts_max++; | |
1337 | ||
a536cf71 KZ |
1338 | /* this message makes sense only when we use extended/primary/logical |
1339 | * dialog. The dialog is disable for scripts, see dos_add_partition() */ | |
1340 | if (!cxt->script) | |
1341 | fdisk_info(cxt, _("Adding logical partition %zu"), | |
1342 | cxt->label->nparts_max); | |
c3bc7483 | 1343 | *partno = cxt->label->nparts_max - 1; |
28d79d9b KZ |
1344 | rc = add_partition(cxt, *partno, pa); |
1345 | ||
1346 | if (rc) { | |
1347 | /* reset on error */ | |
1348 | cxt->label->nparts_max--; | |
1349 | pe->pt_entry = NULL; | |
1350 | pe->ex_entry = NULL; | |
1351 | pe->offset = 0; | |
1352 | pe->changed = 0; | |
1353 | } | |
1354 | ||
1355 | return rc; | |
9dea2923 DB |
1356 | } |
1357 | ||
e3661531 | 1358 | static void check(struct fdisk_context *cxt, size_t n, |
5dfca634 KZ |
1359 | unsigned int h, unsigned int s, unsigned int c, |
1360 | unsigned int start) | |
1361 | { | |
1362 | unsigned int total, real_s, real_c; | |
1363 | ||
63fb717d KZ |
1364 | if (!is_dos_compatible(cxt)) |
1365 | return; | |
1366 | ||
5dfca634 KZ |
1367 | real_s = sector(s) - 1; |
1368 | real_c = cylinder(s, c); | |
9bb8caff | 1369 | total = (real_c * cxt->geom.heads + h) * cxt->geom.sectors + real_s; |
fcea064b | 1370 | |
5dfca634 | 1371 | if (!total) |
829f4206 | 1372 | fdisk_warnx(cxt, _("Partition %zu: contains sector 0"), n); |
5dfca634 | 1373 | if (h >= cxt->geom.heads) |
829f4206 | 1374 | fdisk_warnx(cxt, _("Partition %zu: head %d greater than " |
fcea064b | 1375 | "maximum %d"), n, h + 1, cxt->geom.heads); |
5dfca634 | 1376 | if (real_s >= cxt->geom.sectors) |
829f4206 | 1377 | fdisk_warnx(cxt, _("Partition %zu: sector %d greater than " |
fcea064b | 1378 | "maximum %llu"), n, s, cxt->geom.sectors); |
5dfca634 | 1379 | if (real_c >= cxt->geom.cylinders) |
829f4206 | 1380 | fdisk_warnx(cxt, _("Partition %zu: cylinder %d greater than " |
fcea064b KZ |
1381 | "maximum %llu"), |
1382 | n, real_c + 1, | |
1383 | cxt->geom.cylinders); | |
1384 | ||
5dfca634 | 1385 | if (cxt->geom.cylinders <= 1024 && start != total) |
829f4206 KZ |
1386 | fdisk_warnx(cxt, _("Partition %zu: previous sectors %u " |
1387 | "disagrees with total %u"), n, start, total); | |
5dfca634 KZ |
1388 | } |
1389 | ||
1390 | /* check_consistency() and long2chs() added Sat Mar 6 12:28:16 1993, | |
1391 | * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross, | |
1392 | * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S. | |
1393 | * Lubkin Oct. 1991). */ | |
1394 | ||
1395 | static void | |
1396 | long2chs(struct fdisk_context *cxt, unsigned long ls, | |
1397 | unsigned int *c, unsigned int *h, unsigned int *s) { | |
1398 | int spc = cxt->geom.heads * cxt->geom.sectors; | |
1399 | ||
1400 | *c = ls / spc; | |
1401 | ls = ls % spc; | |
1402 | *h = ls / cxt->geom.sectors; | |
1403 | *s = ls % cxt->geom.sectors + 1; /* sectors count from 1 */ | |
1404 | } | |
1405 | ||
f540fe15 | 1406 | static void check_consistency(struct fdisk_context *cxt, struct dos_partition *p, |
e3661531 | 1407 | size_t partition) |
5dfca634 KZ |
1408 | { |
1409 | unsigned int pbc, pbh, pbs; /* physical beginning c, h, s */ | |
1410 | unsigned int pec, peh, pes; /* physical ending c, h, s */ | |
1411 | unsigned int lbc, lbh, lbs; /* logical beginning c, h, s */ | |
1412 | unsigned int lec, leh, les; /* logical ending c, h, s */ | |
1413 | ||
1414 | if (!is_dos_compatible(cxt)) | |
1415 | return; | |
1416 | ||
1417 | if (!cxt->geom.heads || !cxt->geom.sectors || (partition >= 4)) | |
1418 | return; /* do not check extended partitions */ | |
1419 | ||
60c1b036 | 1420 | /* physical beginning c, h, s */ |
da967236 KZ |
1421 | pbc = (p->bc & 0xff) | ((p->bs << 2) & 0x300); |
1422 | pbh = p->bh; | |
1423 | pbs = p->bs & 0x3f; | |
5dfca634 | 1424 | |
60c1b036 | 1425 | /* physical ending c, h, s */ |
da967236 KZ |
1426 | pec = (p->ec & 0xff) | ((p->es << 2) & 0x300); |
1427 | peh = p->eh; | |
1428 | pes = p->es & 0x3f; | |
5dfca634 | 1429 | |
60c1b036 | 1430 | /* compute logical beginning (c, h, s) */ |
b44244cb | 1431 | long2chs(cxt, dos_partition_get_start(p), &lbc, &lbh, &lbs); |
5dfca634 | 1432 | |
60c1b036 | 1433 | /* compute logical ending (c, h, s) */ |
b44244cb | 1434 | long2chs(cxt, dos_partition_get_start(p) + dos_partition_get_size(p) - 1, &lec, &leh, &les); |
5dfca634 | 1435 | |
60c1b036 | 1436 | /* Same physical / logical beginning? */ |
fcea064b KZ |
1437 | if (cxt->geom.cylinders <= 1024 |
1438 | && (pbc != lbc || pbh != lbh || pbs != lbs)) { | |
829f4206 | 1439 | fdisk_warnx(cxt, _("Partition %zu: different physical/logical " |
fcea064b KZ |
1440 | "beginnings (non-Linux?): " |
1441 | "phys=(%d, %d, %d), logical=(%d, %d, %d)"), | |
1442 | partition + 1, | |
1443 | pbc, pbh, pbs, | |
1444 | lbc, lbh, lbs); | |
5dfca634 KZ |
1445 | } |
1446 | ||
60c1b036 | 1447 | /* Same physical / logical ending? */ |
fcea064b KZ |
1448 | if (cxt->geom.cylinders <= 1024 |
1449 | && (pec != lec || peh != leh || pes != les)) { | |
829f4206 | 1450 | fdisk_warnx(cxt, _("Partition %zu: different physical/logical " |
fcea064b KZ |
1451 | "endings: phys=(%d, %d, %d), logical=(%d, %d, %d)"), |
1452 | partition + 1, | |
1453 | pec, peh, pes, | |
1454 | lec, leh, les); | |
5dfca634 KZ |
1455 | } |
1456 | ||
60c1b036 | 1457 | /* Ending on cylinder boundary? */ |
5dfca634 | 1458 | if (peh != (cxt->geom.heads - 1) || pes != cxt->geom.sectors) { |
829f4206 | 1459 | fdisk_warnx(cxt, _("Partition %zu: does not end on " |
fcea064b | 1460 | "cylinder boundary."), |
5dfca634 KZ |
1461 | partition + 1); |
1462 | } | |
1463 | } | |
1464 | ||
9ffeb235 | 1465 | static int dos_verify_disklabel(struct fdisk_context *cxt) |
2ca61a61 | 1466 | { |
e3661531 | 1467 | size_t i, j; |
0073a4cf KZ |
1468 | fdisk_sector_t total = 1, n_sectors = cxt->total_sectors; |
1469 | fdisk_sector_t first[cxt->label->nparts_max], | |
1470 | last[cxt->label->nparts_max]; | |
f540fe15 | 1471 | struct dos_partition *p; |
fcea064b | 1472 | struct fdisk_dos_label *l = self_label(cxt); |
2ca61a61 | 1473 | |
aa36c2cf | 1474 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 1475 | |
e3661531 KZ |
1476 | fill_bounds(cxt, first, last); |
1477 | for (i = 0; i < cxt->label->nparts_max; i++) { | |
af0df606 | 1478 | struct pte *pe = self_pte(cxt, i); |
2ca61a61 | 1479 | |
af0df606 | 1480 | p = self_partition(cxt, i); |
b2b52925 | 1481 | if (p && is_used_partition(p) && !IS_EXTENDED(p->sys_ind)) { |
2ca61a61 | 1482 | check_consistency(cxt, p, i); |
b2b52925 | 1483 | assert(pe); |
61eaad50 | 1484 | if (get_abs_partition_start(pe) < first[i]) |
fcea064b | 1485 | fdisk_warnx(cxt, _( |
829f4206 | 1486 | "Partition %zu: bad start-of-data."), |
fcea064b KZ |
1487 | i + 1); |
1488 | ||
1489 | check(cxt, i + 1, p->eh, p->es, p->ec, last[i]); | |
2ca61a61 | 1490 | total += last[i] + 1 - first[i]; |
fcea064b | 1491 | |
11712b66 KZ |
1492 | if (i == 0) |
1493 | total += get_abs_partition_start(pe) - 1; | |
1494 | ||
fcea064b | 1495 | for (j = 0; j < i; j++) { |
2ca61a61 DB |
1496 | if ((first[i] >= first[j] && first[i] <= last[j]) |
1497 | || ((last[i] <= last[j] && last[i] >= first[j]))) { | |
fcea064b | 1498 | |
829f4206 KZ |
1499 | fdisk_warnx(cxt, _("Partition %zu: " |
1500 | "overlaps partition %zu."), | |
fcea064b KZ |
1501 | j + 1, i + 1); |
1502 | ||
2ca61a61 DB |
1503 | total += first[i] >= first[j] ? |
1504 | first[i] : first[j]; | |
1505 | total -= last[i] <= last[j] ? | |
1506 | last[i] : last[j]; | |
1507 | } | |
fcea064b | 1508 | } |
2ca61a61 DB |
1509 | } |
1510 | } | |
1511 | ||
fcea064b | 1512 | if (l->ext_offset) { |
0073a4cf | 1513 | fdisk_sector_t e_last; |
1b92d076 KZ |
1514 | struct pte *ext_pe = self_pte(cxt, l->ext_index); |
1515 | ||
b2b52925 | 1516 | assert(ext_pe); |
1b92d076 | 1517 | e_last = get_abs_partition_end(ext_pe); |
2ca61a61 | 1518 | |
e3661531 | 1519 | for (i = 4; i < cxt->label->nparts_max; i++) { |
2ca61a61 | 1520 | total++; |
af0df606 | 1521 | p = self_partition(cxt, i); |
b2b52925 | 1522 | assert(p); |
af0df606 | 1523 | |
2ca61a61 | 1524 | if (!p->sys_ind) { |
e3661531 | 1525 | if (i != 4 || i + 1 < cxt->label->nparts_max) |
fcea064b | 1526 | fdisk_warnx(cxt, |
829f4206 | 1527 | _("Partition %zu: empty."), |
fcea064b KZ |
1528 | i + 1); |
1529 | } else if (first[i] < l->ext_offset | |
1530 | || last[i] > e_last) { | |
1531 | ||
829f4206 KZ |
1532 | fdisk_warnx(cxt, _("Logical partition %zu: " |
1533 | "not entirely in partition %zu."), | |
fcea064b | 1534 | i + 1, l->ext_index + 1); |
2ca61a61 | 1535 | } |
2ca61a61 DB |
1536 | } |
1537 | } | |
1538 | ||
1539 | if (total > n_sectors) | |
fcea064b KZ |
1540 | fdisk_warnx(cxt, _("Total allocated sectors %llu greater " |
1541 | "than the maximum %llu."), total, n_sectors); | |
2ca61a61 | 1542 | else if (total < n_sectors) |
fcea064b | 1543 | fdisk_warnx(cxt, _("Remaining %lld unallocated %ld-byte " |
ac1a559a | 1544 | "sectors."), n_sectors - total, cxt->sector_size); |
2ca61a61 DB |
1545 | |
1546 | return 0; | |
1547 | } | |
1548 | ||
9dea2923 DB |
1549 | /* |
1550 | * Ask the user for new partition type information (logical, extended). | |
0f639e54 DB |
1551 | * This function calls the actual partition adding logic - add_partition. |
1552 | * | |
1553 | * API callback. | |
9dea2923 | 1554 | */ |
77d6a70a | 1555 | static int dos_add_partition(struct fdisk_context *cxt, |
c3bc7483 KZ |
1556 | struct fdisk_partition *pa, |
1557 | size_t *partno) | |
9dea2923 | 1558 | { |
ea987bb5 | 1559 | size_t i, free_primary = 0, free_sectors = 0; |
0073a4cf | 1560 | fdisk_sector_t last = 0, grain; |
e3661531 | 1561 | int rc = 0; |
e77313a6 | 1562 | struct fdisk_dos_label *l; |
1b92d076 | 1563 | struct pte *ext_pe; |
3fdbf0ee | 1564 | size_t res = 0; /* partno */ |
9dea2923 | 1565 | |
9ffeb235 KZ |
1566 | assert(cxt); |
1567 | assert(cxt->label); | |
aa36c2cf | 1568 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 1569 | |
c3bc7483 KZ |
1570 | DBG(LABEL, ul_debug("DOS: new partition wanted")); |
1571 | ||
e77313a6 | 1572 | l = self_label(cxt); |
1b92d076 | 1573 | ext_pe = l->ext_offset ? self_pte(cxt, l->ext_index) : NULL; |
a3e37fa7 | 1574 | |
c3bc7483 KZ |
1575 | /* |
1576 | * partition template (@pa) based partitioning | |
1577 | */ | |
1578 | ||
2cb47542 | 1579 | /* A) template specifies start within extended partition; add logical */ |
ecf40cda | 1580 | if (pa && fdisk_partition_has_start(pa) && ext_pe |
a3e37fa7 | 1581 | && pa->start >= l->ext_offset |
1b92d076 | 1582 | && pa->start <= get_abs_partition_end(ext_pe)) { |
2cb47542 KZ |
1583 | DBG(LABEL, ul_debug("DOS: pa template %p: add logical (by offset)", pa)); |
1584 | ||
1585 | if (fdisk_partition_has_partno(pa) && fdisk_partition_get_partno(pa) < 4) { | |
1586 | DBG(LABEL, ul_debug("DOS: pa template specifies partno<4 for logical partition")); | |
1587 | return -EINVAL; | |
1588 | } | |
c3bc7483 | 1589 | rc = add_logical(cxt, pa, &res); |
a3e37fa7 KZ |
1590 | goto done; |
1591 | ||
2cb47542 KZ |
1592 | /* B) template specifies start out of extended partition; add primary */ |
1593 | } else if (pa && fdisk_partition_has_start(pa) && ext_pe) { | |
1594 | DBG(LABEL, ul_debug("DOS: pa template %p: add primary (by offset)", pa)); | |
1595 | ||
1596 | if (fdisk_partition_has_partno(pa) && fdisk_partition_get_partno(pa) >= 4) { | |
1597 | DBG(LABEL, ul_debug("DOS: pa template specifies partno>=4 for primary partition")); | |
ea987bb5 KZ |
1598 | return -EINVAL; |
1599 | } | |
992f7cba | 1600 | if (ext_pe && pa->type && IS_EXTENDED(pa->type->code)) { |
2cb47542 KZ |
1601 | fdisk_warnx(cxt, _("Extended partition already exists.")); |
1602 | return -EINVAL; | |
c3bc7483 | 1603 | } |
44374b10 | 1604 | rc = get_partition_unused_primary(cxt, pa, &res); |
8d03f4af | 1605 | if (rc == 0) |
c3bc7483 | 1606 | rc = add_partition(cxt, res, pa); |
8d03f4af KZ |
1607 | goto done; |
1608 | ||
2cb47542 KZ |
1609 | /* C) template specifies start (or default), partno < 4; add primary */ |
1610 | } else if (pa && (fdisk_partition_start_is_default(pa) || fdisk_partition_has_start(pa)) | |
8d03f4af | 1611 | && fdisk_partition_has_partno(pa) |
ee9ba4fa | 1612 | && pa->partno < 4) { |
2cb47542 KZ |
1613 | DBG(LABEL, ul_debug("DOS: pa template %p: add primary (by partno)", pa)); |
1614 | ||
1615 | if (ext_pe && pa->type && IS_EXTENDED(pa->type->code)) { | |
1616 | fdisk_warnx(cxt, _("Extended partition already exists.")); | |
1617 | return -EINVAL; | |
1618 | } | |
8d03f4af KZ |
1619 | rc = get_partition_unused_primary(cxt, pa, &res); |
1620 | if (rc == 0) | |
1621 | rc = add_partition(cxt, res, pa); | |
1622 | goto done; | |
1623 | ||
167d7e95 KZ |
1624 | /* D) template specifies start (or default), partno >= 4; add logical */ |
1625 | } else if (pa && (fdisk_partition_start_is_default(pa) || fdisk_partition_has_start(pa)) | |
8d03f4af KZ |
1626 | && fdisk_partition_has_partno(pa) |
1627 | && pa->partno >= 4) { | |
2cb47542 KZ |
1628 | DBG(LABEL, ul_debug("DOS: pa template %p: add logical (by partno)", pa)); |
1629 | ||
1630 | if (!ext_pe) { | |
167d7e95 KZ |
1631 | fdisk_warnx(cxt, _("Extended partition does not exists. Failed to add logical partition.")); |
1632 | return -EINVAL; | |
1633 | } else if (fdisk_partition_has_start(pa) | |
1634 | && pa->start < l->ext_offset | |
1635 | && pa->start > get_abs_partition_end(ext_pe)) { | |
1636 | DBG(LABEL, ul_debug("DOS: pa template specifies partno>=4, but start out of extended")); | |
2cb47542 KZ |
1637 | return -EINVAL; |
1638 | } | |
167d7e95 | 1639 | |
8d03f4af KZ |
1640 | rc = add_logical(cxt, pa, &res); |
1641 | goto done; | |
a3e37fa7 | 1642 | } |
20f878fe | 1643 | |
2cb47542 KZ |
1644 | DBG(LABEL, ul_debug("DOS: dialog driven partitioning")); |
1645 | /* Note @pa may be still used for things like partition type, etc */ | |
c3bc7483 | 1646 | |
ea987bb5 KZ |
1647 | /* check if there is space for primary partition */ |
1648 | grain = cxt->grain > cxt->sector_size ? cxt->grain / cxt->sector_size : 1; | |
1649 | last = cxt->first_lba; | |
1650 | ||
af0df606 KZ |
1651 | for (i = 0; i < 4; i++) { |
1652 | struct dos_partition *p = self_partition(cxt, i); | |
ea987bb5 | 1653 | |
b2b52925 | 1654 | assert(p); |
ea987bb5 | 1655 | if (is_used_partition(p)) { |
0073a4cf | 1656 | fdisk_sector_t start = dos_partition_get_start(p); |
ea987bb5 KZ |
1657 | if (last + grain <= start) |
1658 | free_sectors = 1; | |
1659 | last = start + dos_partition_get_size(p); | |
1660 | } else | |
1661 | free_primary++; | |
af0df606 | 1662 | } |
ea987bb5 KZ |
1663 | if (last + grain < cxt->total_sectors - 1) |
1664 | free_sectors = 1; | |
9dea2923 | 1665 | |
e3661531 | 1666 | if (!free_primary && cxt->label->nparts_max >= MAXIMUM_PARTS) { |
fcea064b KZ |
1667 | fdisk_info(cxt, _("The maximum number of partitions has " |
1668 | "been created.")); | |
8254c3a5 | 1669 | return -EINVAL; |
9dea2923 | 1670 | } |
1bf3a034 | 1671 | rc = 1; |
fcea064b | 1672 | |
ea987bb5 | 1673 | if (!free_primary || !free_sectors) { |
c3bc7483 | 1674 | DBG(LABEL, ul_debug("DOS: primary impossible, add logical")); |
fcea064b | 1675 | if (l->ext_offset) { |
ecf40cda | 1676 | if (!pa || fdisk_partition_has_start(pa)) { |
992f7cba KZ |
1677 | /* See above case A); here we have start, but |
1678 | * out of extended partition */ | |
eed0e7b9 | 1679 | const char *msg; |
c3bc7483 | 1680 | if (!free_primary) |
eed0e7b9 | 1681 | msg = _("All primary partitions are in use."); |
c603d076 | 1682 | else |
eed0e7b9 KZ |
1683 | msg = _("All space for primary partitions is in use."); |
1684 | ||
1685 | if (pa && fdisk_partition_has_start(pa)) { | |
1686 | fdisk_warnx(cxt, msg); | |
1687 | return -EINVAL; | |
1688 | } else | |
1689 | fdisk_info(cxt, msg); | |
c3bc7483 KZ |
1690 | } |
1691 | rc = add_logical(cxt, pa, &res); | |
ea987bb5 | 1692 | } else { |
240ddd3a IW |
1693 | if (free_primary) |
1694 | fdisk_info(cxt, _("All space for primary partitions is in use.")); | |
1695 | else | |
33b981f7 | 1696 | /* TRANSLATORS: Try to keep this within 80 characters. */ |
240ddd3a | 1697 | fdisk_info(cxt, _("To create more partitions, first replace " |
33b981f7 | 1698 | "a primary with an extended partition.")); |
ea987bb5 KZ |
1699 | return -EINVAL; |
1700 | } | |
e3661531 | 1701 | } else if (cxt->label->nparts_max >= MAXIMUM_PARTS) { |
fcea064b KZ |
1702 | fdisk_info(cxt, _("All logical partitions are in use. " |
1703 | "Adding a primary partition.")); | |
44374b10 BE |
1704 | rc = get_partition_unused_primary(cxt, pa, &res); |
1705 | if (rc == 0) | |
c3bc7483 | 1706 | rc = add_partition(cxt, res, pa); |
9dea2923 | 1707 | } else { |
20f878fe KZ |
1708 | char hint[BUFSIZ]; |
1709 | struct fdisk_ask *ask; | |
1710 | int c; | |
1711 | ||
ea987bb5 | 1712 | /* the default layout for scripts is to create primary partitions */ |
992f7cba | 1713 | if (cxt->script || !fdisk_has_dialogs(cxt)) { |
44374b10 BE |
1714 | rc = get_partition_unused_primary(cxt, pa, &res); |
1715 | if (rc == 0) | |
c3bc7483 | 1716 | rc = add_partition(cxt, res, pa); |
ea987bb5 KZ |
1717 | goto done; |
1718 | } | |
1719 | ||
20f878fe KZ |
1720 | ask = fdisk_new_ask(); |
1721 | if (!ask) | |
1722 | return -ENOMEM; | |
1723 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_MENU); | |
1724 | fdisk_ask_set_query(ask, _("Partition type")); | |
1725 | fdisk_ask_menu_set_default(ask, free_primary == 1 | |
1726 | && !l->ext_offset ? 'e' : 'p'); | |
1727 | snprintf(hint, sizeof(hint), | |
1728 | _("%zu primary, %d extended, %zu free"), | |
1729 | 4 - (l->ext_offset ? 1 : 0) - free_primary, | |
1730 | l->ext_offset ? 1 : 0, | |
1731 | free_primary); | |
1732 | ||
1733 | fdisk_ask_menu_add_item(ask, 'p', _("primary"), hint); | |
1734 | if (!l->ext_offset) | |
1735 | fdisk_ask_menu_add_item(ask, 'e', _("extended"), _("container for logical partitions")); | |
1736 | else | |
1737 | fdisk_ask_menu_add_item(ask, 'l', _("logical"), _("numbered from 5")); | |
1738 | ||
1739 | rc = fdisk_do_ask(cxt, ask); | |
5cebb2ab VD |
1740 | if (!rc) |
1741 | fdisk_ask_menu_get_result(ask, &c); | |
1742 | fdisk_unref_ask(ask); | |
bd0d850b KZ |
1743 | if (rc) |
1744 | return rc; | |
bd0d850b | 1745 | |
9dea2923 | 1746 | if (c == 'p') { |
44374b10 BE |
1747 | rc = get_partition_unused_primary(cxt, pa, &res); |
1748 | if (rc == 0) | |
c3bc7483 | 1749 | rc = add_partition(cxt, res, pa); |
8254c3a5 | 1750 | goto done; |
fcea064b | 1751 | } else if (c == 'l' && l->ext_offset) { |
c3bc7483 | 1752 | rc = add_logical(cxt, pa, &res); |
8254c3a5 | 1753 | goto done; |
fcea064b | 1754 | } else if (c == 'e' && !l->ext_offset) { |
44374b10 BE |
1755 | rc = get_partition_unused_primary(cxt, pa, &res); |
1756 | if (rc == 0) { | |
ecf40cda | 1757 | struct fdisk_partition *xpa = NULL; |
77d6a70a KZ |
1758 | struct fdisk_parttype *t; |
1759 | ||
a745611d | 1760 | t = fdisk_label_get_parttype_from_code(cxt->label, |
bb58112e | 1761 | MBR_DOS_EXTENDED_PARTITION); |
ecf40cda KZ |
1762 | if (!pa) { |
1763 | pa = xpa = fdisk_new_partition(); | |
1764 | if (!xpa) | |
1765 | return -ENOMEM; | |
1766 | } | |
77d6a70a | 1767 | fdisk_partition_set_type(pa, t); |
c3bc7483 | 1768 | rc = add_partition(cxt, res, pa); |
ecf40cda KZ |
1769 | if (xpa) { |
1770 | fdisk_unref_partition(xpa); | |
1771 | pa = NULL; | |
1772 | } | |
ed470672 | 1773 | } |
8254c3a5 | 1774 | goto done; |
9dea2923 | 1775 | } else |
ac1a559a | 1776 | fdisk_warnx(cxt, _("Invalid partition type `%c'."), c); |
9dea2923 | 1777 | } |
8254c3a5 | 1778 | done: |
c3bc7483 | 1779 | if (rc == 0) { |
e3661531 | 1780 | cxt->label->nparts_cur++; |
44374b10 | 1781 | if (partno) |
c3bc7483 KZ |
1782 | *partno = res; |
1783 | } | |
8254c3a5 | 1784 | return rc; |
9dea2923 | 1785 | } |
0dc13a38 | 1786 | |
0073a4cf | 1787 | static int write_sector(struct fdisk_context *cxt, fdisk_sector_t secno, |
fae7b1bc | 1788 | unsigned char *buf) |
0dc13a38 | 1789 | { |
21770662 KZ |
1790 | int rc; |
1791 | ||
1792 | rc = seek_sector(cxt, secno); | |
1793 | if (rc != 0) { | |
98aeae96 | 1794 | fdisk_warn(cxt, _("Cannot write sector %jd: seek failed"), |
21770662 KZ |
1795 | (uintmax_t) secno); |
1796 | return rc; | |
1797 | } | |
bcddbe96 | 1798 | |
9e930041 | 1799 | DBG(LABEL, ul_debug("DOS: writing to sector %ju", (uintmax_t) secno)); |
bcddbe96 | 1800 | |
fae7b1bc DB |
1801 | if (write(cxt->dev_fd, buf, cxt->sector_size) != (ssize_t) cxt->sector_size) |
1802 | return -errno; | |
1803 | return 0; | |
1804 | } | |
1805 | ||
9ffeb235 | 1806 | static int dos_write_disklabel(struct fdisk_context *cxt) |
fae7b1bc | 1807 | { |
8b3d9241 | 1808 | struct fdisk_dos_label *l = self_label(cxt); |
e3661531 | 1809 | size_t i; |
8b3d9241 | 1810 | int rc = 0, mbr_changed = 0; |
0dc13a38 | 1811 | |
9ffeb235 KZ |
1812 | assert(cxt); |
1813 | assert(cxt->label); | |
aa36c2cf | 1814 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 1815 | |
3d919d95 KZ |
1816 | DBG(LABEL, ul_debug("DOS: write PT requested [label-changed: %d, non-pt-changed: %d]", |
1817 | cxt->label->changed, l->non_pt_changed)); | |
1818 | ||
8b3d9241 KZ |
1819 | mbr_changed = l->non_pt_changed; |
1820 | ||
0dc13a38 | 1821 | /* MBR (primary partitions) */ |
8b3d9241 | 1822 | if (!mbr_changed) { |
af0df606 KZ |
1823 | for (i = 0; i < 4; i++) { |
1824 | struct pte *pe = self_pte(cxt, i); | |
b2b52925 KZ |
1825 | |
1826 | assert(pe); | |
af0df606 | 1827 | if (pe->changed) |
8b3d9241 | 1828 | mbr_changed = 1; |
af0df606 | 1829 | } |
0dc13a38 | 1830 | } |
8b3d9241 | 1831 | if (mbr_changed) { |
9e930041 | 1832 | DBG(LABEL, ul_debug("DOS: MBR changed, writing")); |
67987b47 | 1833 | mbr_set_magic(cxt->firstsector); |
fae7b1bc DB |
1834 | rc = write_sector(cxt, 0, cxt->firstsector); |
1835 | if (rc) | |
1836 | goto done; | |
0dc13a38 | 1837 | } |
8b3d9241 | 1838 | |
bcddbe96 KZ |
1839 | if (cxt->label->nparts_max <= 4 && l->ext_offset) { |
1840 | /* we have empty extended partition, check if the partition has | |
1841 | * been modified and then cleanup possible remaining EBR */ | |
1842 | struct pte *pe = self_pte(cxt, l->ext_index); | |
1843 | unsigned char empty[512] = { 0 }; | |
0073a4cf | 1844 | fdisk_sector_t off = pe ? get_abs_partition_start(pe) : 0; |
bcddbe96 KZ |
1845 | |
1846 | if (off && pe->changed) { | |
1847 | mbr_set_magic(empty); | |
1848 | write_sector(cxt, off, empty); | |
1849 | } | |
1850 | } | |
1851 | ||
0dc13a38 | 1852 | /* EBR (logical partitions) */ |
e3661531 | 1853 | for (i = 4; i < cxt->label->nparts_max; i++) { |
af0df606 | 1854 | struct pte *pe = self_pte(cxt, i); |
0dc13a38 | 1855 | |
b2b52925 | 1856 | assert(pe); |
28d79d9b | 1857 | if (!pe->changed || !pe->offset || !pe->sectorbuffer) |
613596b3 KZ |
1858 | continue; |
1859 | ||
613596b3 KZ |
1860 | mbr_set_magic(pe->sectorbuffer); |
1861 | rc = write_sector(cxt, pe->offset, pe->sectorbuffer); | |
1862 | if (rc) | |
1863 | goto done; | |
0dc13a38 | 1864 | } |
fae7b1bc DB |
1865 | |
1866 | done: | |
1867 | return rc; | |
0dc13a38 | 1868 | } |
b8855c86 | 1869 | |
f32a9be4 | 1870 | static int dos_locate_disklabel(struct fdisk_context *cxt, int n, |
9bbcf43f | 1871 | const char **name, uint64_t *offset, size_t *size) |
f32a9be4 KZ |
1872 | { |
1873 | assert(cxt); | |
1874 | ||
1875 | *name = NULL; | |
1876 | *offset = 0; | |
1877 | *size = 0; | |
1878 | ||
1879 | switch (n) { | |
1880 | case 0: | |
1881 | *name = "MBR"; | |
1882 | *offset = 0; | |
1883 | *size = 512; | |
1884 | break; | |
1885 | default: | |
1886 | /* extended partitions */ | |
b9710f1f | 1887 | if ((size_t)n - 1 + 4 < cxt->label->nparts_max) { |
f32a9be4 KZ |
1888 | struct pte *pe = self_pte(cxt, n - 1 + 4); |
1889 | ||
b2b52925 | 1890 | assert(pe); |
f32a9be4 KZ |
1891 | assert(pe->private_sectorbuffer); |
1892 | ||
1893 | *name = "EBR"; | |
9bbcf43f | 1894 | *offset = (uint64_t) pe->offset * cxt->sector_size; |
f32a9be4 KZ |
1895 | *size = 512; |
1896 | } else | |
1897 | return 1; | |
1898 | break; | |
1899 | } | |
1900 | ||
1901 | return 0; | |
1902 | } | |
1903 | ||
dfc96cbf KZ |
1904 | /* |
1905 | * Check whether partition entries are ordered by their starting positions. | |
1906 | * Return 0 if OK. Return i if partition i should have been earlier. | |
1907 | * Two separate checks: primary and logical partitions. | |
1908 | */ | |
e3661531 | 1909 | static int wrong_p_order(struct fdisk_context *cxt, size_t *prev) |
dfc96cbf | 1910 | { |
e3661531 KZ |
1911 | size_t last_p_start_pos = 0, p_start_pos; |
1912 | size_t i, last_i = 0; | |
dfc96cbf | 1913 | |
e3661531 | 1914 | for (i = 0 ; i < cxt->label->nparts_max; i++) { |
af0df606 KZ |
1915 | |
1916 | struct pte *pe = self_pte(cxt, i); | |
b2b52925 KZ |
1917 | struct dos_partition *p; |
1918 | ||
1919 | assert(pe); | |
1920 | p = pe->pt_entry; | |
af0df606 | 1921 | |
dfc96cbf KZ |
1922 | if (i == 4) { |
1923 | last_i = 4; | |
1924 | last_p_start_pos = 0; | |
1925 | } | |
d0a870c5 | 1926 | if (is_used_partition(p)) { |
61eaad50 | 1927 | p_start_pos = get_abs_partition_start(pe); |
dfc96cbf KZ |
1928 | |
1929 | if (last_p_start_pos > p_start_pos) { | |
1930 | if (prev) | |
1931 | *prev = last_i; | |
1932 | return i; | |
1933 | } | |
1934 | ||
1935 | last_p_start_pos = p_start_pos; | |
1936 | last_i = i; | |
1937 | } | |
1938 | } | |
1939 | return 0; | |
1940 | } | |
6d864a49 | 1941 | |
5989556a | 1942 | static int dos_get_disklabel_item(struct fdisk_context *cxt, struct fdisk_labelitem *item) |
1cf67f1c | 1943 | { |
5989556a KZ |
1944 | int rc = 0; |
1945 | ||
6d864a49 | 1946 | assert(cxt); |
9ffeb235 | 1947 | assert(cxt->label); |
aa36c2cf | 1948 | assert(fdisk_is_label(cxt, DOS)); |
6d864a49 | 1949 | |
5989556a KZ |
1950 | switch (item->id) { |
1951 | case FDISK_LABELITEM_ID: | |
1952 | { | |
1953 | unsigned int num = mbr_get_id(cxt->firstsector); | |
1954 | item->name = _("Disk identifier"); | |
1955 | item->type = 's'; | |
1956 | if (asprintf(&item->data.str, "0x%08x", num) < 0) | |
1957 | rc = -ENOMEM; | |
1958 | break; | |
1959 | } | |
1960 | default: | |
1961 | if (item->id < __FDISK_NLABELITEMS) | |
9e930041 | 1962 | rc = 1; /* unsupported generic item */ |
5989556a KZ |
1963 | else |
1964 | rc = 2; /* out of range */ | |
1965 | break; | |
1966 | } | |
1967 | ||
1968 | return rc; | |
1969 | ||
262002ee | 1970 | } |
1cf67f1c | 1971 | |
262002ee KZ |
1972 | static int dos_get_partition(struct fdisk_context *cxt, size_t n, |
1973 | struct fdisk_partition *pa) | |
1974 | { | |
1975 | struct dos_partition *p; | |
1976 | struct pte *pe; | |
bd5e8291 | 1977 | struct fdisk_dos_label *lb; |
1cf67f1c | 1978 | |
262002ee KZ |
1979 | assert(cxt); |
1980 | assert(pa); | |
1981 | assert(cxt->label); | |
aa36c2cf | 1982 | assert(fdisk_is_label(cxt, DOS)); |
1cf67f1c | 1983 | |
bd5e8291 | 1984 | lb = self_label(cxt); |
b2b52925 | 1985 | |
262002ee | 1986 | pe = self_pte(cxt, n); |
b2b52925 KZ |
1987 | assert(pe); |
1988 | ||
262002ee KZ |
1989 | p = pe->pt_entry; |
1990 | pa->used = !is_cleared_partition(p); | |
1991 | if (!pa->used) | |
1992 | return 0; | |
1cf67f1c | 1993 | |
7f01ec7a | 1994 | pa->type = dos_partition_parttype(cxt, p); |
cb4d6804 | 1995 | pa->boot = p->boot_ind == ACTIVE_FLAG ? 1 : 0; |
77d6a70a | 1996 | pa->start = get_abs_partition_start(pe); |
1b92d076 | 1997 | pa->size = dos_partition_get_size(p); |
e77313a6 | 1998 | pa->container = lb->ext_offset && n == lb->ext_index; |
1cf67f1c | 1999 | |
bd5e8291 KZ |
2000 | if (n >= 4) |
2001 | pa->parent_partno = lb->ext_index; | |
03643931 | 2002 | |
cb4d6804 | 2003 | if (p->boot_ind && asprintf(&pa->attrs, "%02x", p->boot_ind) < 0) |
262002ee | 2004 | return -ENOMEM; |
6d864a49 | 2005 | |
262002ee | 2006 | /* start C/H/S */ |
ecf40cda | 2007 | if (asprintf(&pa->start_chs, "%d/%d/%d", |
262002ee | 2008 | cylinder(p->bs, p->bc), |
a2ad58ac AH |
2009 | p->bh, |
2010 | sector(p->bs)) < 0) | |
262002ee | 2011 | return -ENOMEM; |
1cf67f1c | 2012 | |
262002ee | 2013 | /* end C/H/S */ |
ecf40cda | 2014 | if (asprintf(&pa->end_chs, "%d/%d/%d", |
262002ee | 2015 | cylinder(p->es, p->ec), |
a2ad58ac AH |
2016 | p->eh, |
2017 | sector(p->es)) < 0) | |
262002ee | 2018 | return -ENOMEM; |
6d864a49 | 2019 | |
262002ee | 2020 | return 0; |
6d864a49 KZ |
2021 | } |
2022 | ||
df15fb3d KZ |
2023 | static int has_logical(struct fdisk_context *cxt) |
2024 | { | |
2025 | size_t i; | |
2026 | struct fdisk_dos_label *l = self_label(cxt); | |
2027 | ||
2028 | for (i = 4; i < cxt->label->nparts_max; i++) { | |
2029 | if (l->ptes[i].pt_entry) | |
2030 | return 1; | |
2031 | } | |
2032 | return 0; | |
2033 | } | |
2034 | ||
0ecf3ab5 KZ |
2035 | static int dos_set_partition(struct fdisk_context *cxt, size_t n, |
2036 | struct fdisk_partition *pa) | |
2037 | { | |
df15fb3d | 2038 | struct fdisk_dos_label *l; |
0ecf3ab5 KZ |
2039 | struct dos_partition *p; |
2040 | struct pte *pe; | |
df15fb3d | 2041 | int orgtype; |
0073a4cf | 2042 | fdisk_sector_t start, size; |
0ecf3ab5 KZ |
2043 | |
2044 | assert(cxt); | |
2045 | assert(pa); | |
2046 | assert(cxt->label); | |
2047 | assert(fdisk_is_label(cxt, DOS)); | |
2048 | ||
2049 | if (n >= cxt->label->nparts_max) | |
2050 | return -EINVAL; | |
2051 | ||
df15fb3d | 2052 | l = self_label(cxt); |
333c3761 | 2053 | p = self_partition(cxt, n); |
b2b52925 | 2054 | |
333c3761 | 2055 | pe = self_pte(cxt, n); |
b2b52925 KZ |
2056 | if (!pe) |
2057 | return -EINVAL; | |
2058 | ||
df15fb3d KZ |
2059 | orgtype = p->sys_ind; |
2060 | ||
2061 | if (pa->type) { | |
e6b4209d | 2062 | if (IS_EXTENDED(pa->type->code) && l->ext_offset && l->ext_index != n) { |
df15fb3d KZ |
2063 | fdisk_warnx(cxt, _("Extended partition already exists.")); |
2064 | return -EINVAL; | |
2065 | } | |
2066 | ||
2067 | if (!pa->type->code) | |
2068 | fdisk_warnx(cxt, _("Type 0 means free space to many systems. " | |
2069 | "Having partitions of type 0 is probably unwise.")); | |
2070 | ||
2071 | if (IS_EXTENDED(p->sys_ind) && !IS_EXTENDED(pa->type->code) && has_logical(cxt)) { | |
2072 | fdisk_warnx(cxt, _( | |
2073 | "Cannot change type of the extended partition which is " | |
75a8e726 | 2074 | "already used by logical partitions. Delete logical " |
df15fb3d KZ |
2075 | "partitions first.")); |
2076 | return -EINVAL; | |
2077 | } | |
2078 | } | |
150d98ee | 2079 | |
333c3761 KZ |
2080 | FDISK_INIT_UNDEF(start); |
2081 | FDISK_INIT_UNDEF(size); | |
0ecf3ab5 | 2082 | |
333c3761 KZ |
2083 | if (fdisk_partition_has_start(pa)) |
2084 | start = pa->start; | |
2085 | if (fdisk_partition_has_size(pa)) | |
2086 | size = pa->size; | |
150d98ee | 2087 | |
333c3761 KZ |
2088 | if (!FDISK_IS_UNDEF(start) || !FDISK_IS_UNDEF(size)) { |
2089 | DBG(LABEL, ul_debug("DOS: resize partition")); | |
150d98ee | 2090 | |
333c3761 KZ |
2091 | if (FDISK_IS_UNDEF(start)) |
2092 | start = get_abs_partition_start(pe); | |
2093 | if (FDISK_IS_UNDEF(size)) | |
2094 | size = dos_partition_get_size(p); | |
0ecf3ab5 | 2095 | |
150d98ee | 2096 | set_partition(cxt, n, 0, start, start + size - 1, |
0ecf3ab5 | 2097 | pa->type ? pa->type->code : p->sys_ind, |
4d156d92 KZ |
2098 | FDISK_IS_UNDEF(pa->boot) ? |
2099 | p->boot_ind == ACTIVE_FLAG : | |
2100 | fdisk_partition_is_bootable(pa)); | |
150d98ee | 2101 | } else { |
ecf40cda | 2102 | DBG(LABEL, ul_debug("DOS: keep size, modify properties")); |
150d98ee KZ |
2103 | if (pa->type) |
2104 | p->sys_ind = pa->type->code; | |
ecf40cda | 2105 | if (!FDISK_IS_UNDEF(pa->boot)) |
4d156d92 | 2106 | p->boot_ind = fdisk_partition_is_bootable(pa) ? ACTIVE_FLAG : 0; |
150d98ee KZ |
2107 | } |
2108 | ||
df15fb3d KZ |
2109 | if (pa->type) { |
2110 | if (IS_EXTENDED(pa->type->code) && !IS_EXTENDED(orgtype)) { | |
2111 | /* new extended partition - create a reference */ | |
2112 | l->ext_index = n; | |
2113 | l->ext_offset = dos_partition_get_start(p); | |
2114 | pe->ex_entry = p; | |
2115 | } else if (IS_EXTENDED(orgtype)) { | |
2116 | /* remove extended partition */ | |
2117 | cxt->label->nparts_max = 4; | |
2118 | l->ptes[l->ext_index].ex_entry = NULL; | |
2119 | l->ext_offset = 0; | |
2120 | l->ext_index = 0; | |
2121 | } | |
2122 | } | |
2123 | ||
0ecf3ab5 KZ |
2124 | partition_set_changed(cxt, n, 1); |
2125 | return 0; | |
2126 | } | |
2127 | ||
a60087aa KZ |
2128 | static void print_chain_of_logicals(struct fdisk_context *cxt) |
2129 | { | |
2130 | size_t i; | |
6c64adee | 2131 | struct fdisk_dos_label *l = self_label(cxt); |
a60087aa KZ |
2132 | |
2133 | fputc('\n', stdout); | |
2134 | ||
2135 | for (i = 4; i < cxt->label->nparts_max; i++) { | |
2136 | struct pte *pe = self_pte(cxt, i); | |
2137 | ||
b2b52925 | 2138 | assert(pe); |
2248aaf9 | 2139 | fprintf(stderr, "#%02zu EBR [%10ju], " |
6c64adee KZ |
2140 | "data[start=%10ju (%10ju), size=%10ju], " |
2141 | "link[start=%10ju (%10ju), size=%10ju]\n", | |
a60087aa | 2142 | i, (uintmax_t) pe->offset, |
6c64adee | 2143 | /* data */ |
a60087aa | 2144 | (uintmax_t) dos_partition_get_start(pe->pt_entry), |
6c64adee | 2145 | (uintmax_t) get_abs_partition_start(pe), |
a60087aa | 2146 | (uintmax_t) dos_partition_get_size(pe->pt_entry), |
6c64adee | 2147 | /* link */ |
a60087aa | 2148 | (uintmax_t) dos_partition_get_start(pe->ex_entry), |
6c64adee | 2149 | (uintmax_t) l->ext_offset + dos_partition_get_start(pe->ex_entry), |
a60087aa KZ |
2150 | (uintmax_t) dos_partition_get_size(pe->ex_entry)); |
2151 | } | |
2152 | } | |
2153 | ||
c1156d85 KZ |
2154 | static int cmp_ebr_offsets(const void *a, const void *b) |
2155 | { | |
2156 | struct pte *ae = (struct pte *) a, | |
2157 | *be = (struct pte *) b; | |
2158 | ||
99cacc6a | 2159 | if (ae->offset == 0 && be->offset == 0) |
c1156d85 KZ |
2160 | return 0; |
2161 | if (ae->offset == 0) | |
2162 | return 1; | |
2163 | if (be->offset == 0) | |
2164 | return -1; | |
2165 | ||
19ff8ff7 | 2166 | return cmp_numbers(ae->offset, be->offset); |
c1156d85 KZ |
2167 | } |
2168 | ||
dfc96cbf KZ |
2169 | /* |
2170 | * Fix the chain of logicals. | |
dfc96cbf | 2171 | * |
a60087aa KZ |
2172 | * The function does not modify data partitions within EBR tables |
2173 | * (pte->pt_entry). It sorts the chain by EBR offsets and then update links | |
2174 | * (pte->ex_entry) between EBR tables. | |
2175 | * | |
dfc96cbf | 2176 | */ |
e3661531 | 2177 | static void fix_chain_of_logicals(struct fdisk_context *cxt) |
dfc96cbf | 2178 | { |
af0df606 | 2179 | struct fdisk_dos_label *l = self_label(cxt); |
d0bdf184 | 2180 | struct pte *last; |
a60087aa KZ |
2181 | size_t i; |
2182 | ||
a60087aa KZ |
2183 | DBG(LABEL, print_chain_of_logicals(cxt)); |
2184 | ||
c1156d85 KZ |
2185 | /* Sort chain by EBR offsets */ |
2186 | qsort(&l->ptes[4], cxt->label->nparts_max - 4, sizeof(struct pte), | |
2187 | cmp_ebr_offsets); | |
2188 | ||
a60087aa | 2189 | again: |
c1156d85 | 2190 | /* Sort data partitions by start */ |
a60087aa KZ |
2191 | for (i = 4; i < cxt->label->nparts_max - 1; i++) { |
2192 | struct pte *cur = self_pte(cxt, i), | |
2193 | *nxt = self_pte(cxt, i + 1); | |
a60087aa | 2194 | |
b2b52925 KZ |
2195 | assert(cur); |
2196 | assert(nxt); | |
2197 | ||
c1156d85 KZ |
2198 | if (get_abs_partition_start(cur) > |
2199 | get_abs_partition_start(nxt)) { | |
a60087aa | 2200 | |
c1156d85 | 2201 | struct dos_partition tmp = *cur->pt_entry; |
0073a4cf | 2202 | fdisk_sector_t cur_start = get_abs_partition_start(cur), |
c1156d85 | 2203 | nxt_start = get_abs_partition_start(nxt); |
a60087aa | 2204 | |
c1156d85 KZ |
2205 | /* swap data partitions */ |
2206 | *cur->pt_entry = *nxt->pt_entry; | |
2207 | *nxt->pt_entry = tmp; | |
a60087aa | 2208 | |
c1156d85 | 2209 | /* Recount starts according to EBR offsets, the absolute |
9e930041 | 2210 | * address still has to be the same! */ |
c1156d85 KZ |
2211 | dos_partition_set_start(cur->pt_entry, nxt_start - cur->offset); |
2212 | dos_partition_set_start(nxt->pt_entry, cur_start - nxt->offset); | |
a60087aa | 2213 | |
c1156d85 KZ |
2214 | partition_set_changed(cxt, i, 1); |
2215 | partition_set_changed(cxt, i + 1, 1); | |
2216 | goto again; | |
2217 | } | |
dfc96cbf KZ |
2218 | } |
2219 | ||
c1156d85 | 2220 | /* Update EBR links */ |
a60087aa KZ |
2221 | for (i = 4; i < cxt->label->nparts_max - 1; i++) { |
2222 | struct pte *cur = self_pte(cxt, i), | |
2223 | *nxt = self_pte(cxt, i + 1); | |
2224 | ||
b2b52925 KZ |
2225 | assert(cur); |
2226 | assert(nxt); | |
2227 | ||
0073a4cf | 2228 | fdisk_sector_t noff = nxt->offset - l->ext_offset, |
b2b52925 | 2229 | ooff = dos_partition_get_start(cur->ex_entry); |
a60087aa | 2230 | |
a60087aa KZ |
2231 | if (noff == ooff) |
2232 | continue; | |
2233 | ||
2234 | DBG(LABEL, ul_debug("DOS: fix EBR [%10ju] link %ju -> %ju", | |
2235 | (uintmax_t) cur->offset, | |
2236 | (uintmax_t) ooff, (uintmax_t) noff)); | |
2237 | ||
2238 | set_partition(cxt, i, 1, nxt->offset, | |
7bc31ada KZ |
2239 | get_abs_partition_end(nxt), |
2240 | MBR_DOS_EXTENDED_PARTITION, 0); | |
d0bdf184 | 2241 | } |
6c64adee | 2242 | |
d0bdf184 KZ |
2243 | /* always terminate the chain ! */ |
2244 | last = self_pte(cxt, cxt->label->nparts_max - 1); | |
2245 | if (last) { | |
2246 | clear_partition(last->ex_entry); | |
2247 | partition_set_changed(cxt, cxt->label->nparts_max - 1, 1); | |
a60087aa | 2248 | } |
d0bdf184 | 2249 | |
a60087aa | 2250 | DBG(LABEL, print_chain_of_logicals(cxt)); |
dfc96cbf KZ |
2251 | } |
2252 | ||
dd7ba604 | 2253 | static int dos_reorder(struct fdisk_context *cxt) |
dfc96cbf KZ |
2254 | { |
2255 | struct pte *pei, *pek; | |
e3661531 | 2256 | size_t i,k; |
dfc96cbf | 2257 | |
e3661531 | 2258 | if (!wrong_p_order(cxt, NULL)) { |
fcea064b | 2259 | fdisk_info(cxt, _("Nothing to do. Ordering is correct already.")); |
dd49c7d6 | 2260 | return 1; |
dfc96cbf KZ |
2261 | } |
2262 | ||
e3661531 | 2263 | while ((i = wrong_p_order(cxt, &k)) != 0 && i < 4) { |
dfc96cbf KZ |
2264 | /* partition i should have come earlier, move it */ |
2265 | /* We have to move data in the MBR */ | |
f540fe15 | 2266 | struct dos_partition *pi, *pk, *pe, pbuf; |
af0df606 KZ |
2267 | pei = self_pte(cxt, i); |
2268 | pek = self_pte(cxt, k); | |
dfc96cbf | 2269 | |
b2b52925 KZ |
2270 | assert(pei); |
2271 | assert(pek); | |
2272 | ||
6864f168 KZ |
2273 | pe = pei->ex_entry; |
2274 | pei->ex_entry = pek->ex_entry; | |
2275 | pek->ex_entry = pe; | |
dfc96cbf | 2276 | |
6864f168 KZ |
2277 | pi = pei->pt_entry; |
2278 | pk = pek->pt_entry; | |
dfc96cbf | 2279 | |
f540fe15 KZ |
2280 | memmove(&pbuf, pi, sizeof(struct dos_partition)); |
2281 | memmove(pi, pk, sizeof(struct dos_partition)); | |
2282 | memmove(pk, &pbuf, sizeof(struct dos_partition)); | |
dfc96cbf | 2283 | |
af0df606 KZ |
2284 | partition_set_changed(cxt, i, 1); |
2285 | partition_set_changed(cxt, k, 1); | |
dfc96cbf KZ |
2286 | } |
2287 | ||
2288 | if (i) | |
e3661531 | 2289 | fix_chain_of_logicals(cxt); |
dfc96cbf | 2290 | |
f8ad3899 | 2291 | return 0; |
dfc96cbf | 2292 | } |
6d864a49 | 2293 | |
ecf40cda | 2294 | /* TODO: use fdisk_set_partition() API */ |
829f4206 | 2295 | int fdisk_dos_move_begin(struct fdisk_context *cxt, size_t i) |
71ee484e | 2296 | { |
f8ad3899 KZ |
2297 | struct pte *pe; |
2298 | struct dos_partition *p; | |
71ee484e | 2299 | unsigned int new, free_start, curr_start, last; |
bd0d850b | 2300 | uintmax_t res = 0; |
e3661531 | 2301 | size_t x; |
f8ad3899 | 2302 | int rc; |
71ee484e KZ |
2303 | |
2304 | assert(cxt); | |
aa36c2cf | 2305 | assert(fdisk_is_label(cxt, DOS)); |
71ee484e | 2306 | |
f8ad3899 | 2307 | pe = self_pte(cxt, i); |
b2b52925 KZ |
2308 | if (!pe) |
2309 | return -EINVAL; | |
2310 | ||
f8ad3899 KZ |
2311 | p = pe->pt_entry; |
2312 | ||
d0a870c5 | 2313 | if (!is_used_partition(p) || IS_EXTENDED (p->sys_ind)) { |
829f4206 | 2314 | fdisk_warnx(cxt, _("Partition %zu: no data area."), i + 1); |
f8ad3899 | 2315 | return 0; |
71ee484e KZ |
2316 | } |
2317 | ||
2318 | /* the default start is at the second sector of the disk or at the | |
2319 | * second sector of the extended partition | |
2320 | */ | |
2321 | free_start = pe->offset ? pe->offset + 1 : 1; | |
2322 | ||
61eaad50 | 2323 | curr_start = get_abs_partition_start(pe); |
71ee484e KZ |
2324 | |
2325 | /* look for a free space before the current start of the partition */ | |
e3661531 | 2326 | for (x = 0; x < cxt->label->nparts_max; x++) { |
71ee484e | 2327 | unsigned int end; |
af0df606 | 2328 | struct pte *prev_pe = self_pte(cxt, x); |
b2b52925 KZ |
2329 | struct dos_partition *prev_p; |
2330 | ||
2331 | assert(prev_pe); | |
71ee484e | 2332 | |
b2b52925 | 2333 | prev_p = prev_pe->pt_entry; |
71ee484e KZ |
2334 | if (!prev_p) |
2335 | continue; | |
af0df606 KZ |
2336 | end = get_abs_partition_start(prev_pe) |
2337 | + dos_partition_get_size(prev_p); | |
71ee484e | 2338 | |
d0a870c5 | 2339 | if (is_used_partition(prev_p) && |
71ee484e KZ |
2340 | end > free_start && end <= curr_start) |
2341 | free_start = end; | |
2342 | } | |
2343 | ||
1b92d076 | 2344 | last = get_abs_partition_end(pe); |
71ee484e | 2345 | |
f8ad3899 KZ |
2346 | rc = fdisk_ask_number(cxt, free_start, curr_start, last, |
2347 | _("New beginning of data"), &res); | |
2348 | if (rc) | |
2349 | return rc; | |
2350 | ||
bd0d850b | 2351 | new = res - pe->offset; |
71ee484e | 2352 | |
b44244cb | 2353 | if (new != dos_partition_get_size(p)) { |
af0df606 KZ |
2354 | unsigned int sects = dos_partition_get_size(p) |
2355 | + dos_partition_get_start(p) - new; | |
2356 | ||
b44244cb KZ |
2357 | dos_partition_set_size(p, sects); |
2358 | dos_partition_set_start(p, new); | |
af0df606 KZ |
2359 | |
2360 | partition_set_changed(cxt, i, 1); | |
71ee484e | 2361 | } |
f8ad3899 KZ |
2362 | |
2363 | return rc; | |
71ee484e | 2364 | } |
6d864a49 | 2365 | |
8c0a7f91 | 2366 | static int dos_partition_is_used( |
47b8e7c0 | 2367 | struct fdisk_context *cxt, |
8c0a7f91 | 2368 | size_t i) |
47b8e7c0 | 2369 | { |
f540fe15 | 2370 | struct dos_partition *p; |
47b8e7c0 KZ |
2371 | |
2372 | assert(cxt); | |
9ffeb235 | 2373 | assert(cxt->label); |
aa36c2cf | 2374 | assert(fdisk_is_label(cxt, DOS)); |
47b8e7c0 | 2375 | |
8c0a7f91 KZ |
2376 | if (i >= cxt->label->nparts_max) |
2377 | return 0; | |
47b8e7c0 | 2378 | |
af0df606 | 2379 | p = self_partition(cxt, i); |
47b8e7c0 | 2380 | |
8c0a7f91 | 2381 | return p && !is_cleared_partition(p); |
47b8e7c0 KZ |
2382 | } |
2383 | ||
fb1caca7 KZ |
2384 | static int dos_toggle_partition_flag( |
2385 | struct fdisk_context *cxt, | |
2386 | size_t i, | |
2387 | unsigned long flag) | |
2388 | { | |
f540fe15 | 2389 | struct dos_partition *p; |
fb1caca7 KZ |
2390 | |
2391 | assert(cxt); | |
2392 | assert(cxt->label); | |
aa36c2cf | 2393 | assert(fdisk_is_label(cxt, DOS)); |
fb1caca7 KZ |
2394 | |
2395 | if (i >= cxt->label->nparts_max) | |
2396 | return -EINVAL; | |
2397 | ||
af0df606 | 2398 | p = self_partition(cxt, i); |
fb1caca7 KZ |
2399 | |
2400 | switch (flag) { | |
2401 | case DOS_FLAG_ACTIVE: | |
2402 | if (IS_EXTENDED(p->sys_ind) && !p->boot_ind) | |
829f4206 KZ |
2403 | fdisk_warnx(cxt, _("Partition %zu: is an extended " |
2404 | "partition."), i + 1); | |
fb1caca7 KZ |
2405 | |
2406 | p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG); | |
af0df606 | 2407 | partition_set_changed(cxt, i, 1); |
0477369a | 2408 | fdisk_info(cxt, p->boot_ind ? |
f736ae51 KZ |
2409 | _("The bootable flag on partition %zu is enabled now.") : |
2410 | _("The bootable flag on partition %zu is disabled now."), | |
2411 | i + 1); | |
fb1caca7 KZ |
2412 | break; |
2413 | default: | |
2414 | return 1; | |
2415 | } | |
2416 | ||
2417 | return 0; | |
2418 | } | |
2419 | ||
bd85d11f | 2420 | static const struct fdisk_field dos_fields[] = |
262002ee KZ |
2421 | { |
2422 | /* basic */ | |
bd85d11f KZ |
2423 | { FDISK_FIELD_DEVICE, N_("Device"), 10, 0 }, |
2424 | { FDISK_FIELD_BOOT, N_("Boot"), 1, 0 }, | |
2425 | { FDISK_FIELD_START, N_("Start"), 5, FDISK_FIELDFL_NUMBER }, | |
2426 | { FDISK_FIELD_END, N_("End"), 5, FDISK_FIELDFL_NUMBER }, | |
2427 | { FDISK_FIELD_SECTORS, N_("Sectors"), 5, FDISK_FIELDFL_NUMBER }, | |
2428 | { FDISK_FIELD_CYLINDERS,N_("Cylinders"), 5, FDISK_FIELDFL_NUMBER }, | |
2429 | { FDISK_FIELD_SIZE, N_("Size"), 5, FDISK_FIELDFL_NUMBER | FDISK_FIELDFL_EYECANDY }, | |
2430 | { FDISK_FIELD_TYPEID, N_("Id"), 2, FDISK_FIELDFL_NUMBER }, | |
2431 | { FDISK_FIELD_TYPE, N_("Type"), 0.1, 0 }, | |
262002ee KZ |
2432 | |
2433 | /* expert mode */ | |
bd85d11f KZ |
2434 | { FDISK_FIELD_SADDR, N_("Start-C/H/S"), 1, FDISK_FIELDFL_NUMBER | FDISK_FIELDFL_DETAIL }, |
2435 | { FDISK_FIELD_EADDR, N_("End-C/H/S"), 1, FDISK_FIELDFL_NUMBER | FDISK_FIELDFL_DETAIL }, | |
2436 | { FDISK_FIELD_ATTR, N_("Attrs"), 2, FDISK_FIELDFL_NUMBER | FDISK_FIELDFL_DETAIL } | |
262002ee KZ |
2437 | |
2438 | }; | |
2439 | ||
0c5d095e | 2440 | static const struct fdisk_label_operations dos_operations = |
b8855c86 | 2441 | { |
0c5d095e KZ |
2442 | .probe = dos_probe_label, |
2443 | .write = dos_write_disklabel, | |
2444 | .verify = dos_verify_disklabel, | |
2445 | .create = dos_create_disklabel, | |
f32a9be4 | 2446 | .locate = dos_locate_disklabel, |
5989556a | 2447 | .get_item = dos_get_disklabel_item, |
35b1f0a4 | 2448 | .set_id = dos_set_disklabel_id, |
1cf67f1c | 2449 | |
262002ee | 2450 | .get_part = dos_get_partition, |
0ecf3ab5 | 2451 | .set_part = dos_set_partition, |
77d6a70a | 2452 | .add_part = dos_add_partition, |
e11c6684 | 2453 | .del_part = dos_delete_partition, |
5989556a | 2454 | .reorder = dos_reorder, |
262002ee | 2455 | |
fb1caca7 | 2456 | .part_toggle_flag = dos_toggle_partition_flag, |
8c0a7f91 | 2457 | .part_is_used = dos_partition_is_used, |
47b8e7c0 | 2458 | |
cf3808e4 | 2459 | .reset_alignment = dos_reset_alignment, |
ddec0e40 KZ |
2460 | |
2461 | .deinit = dos_deinit, | |
b8855c86 | 2462 | }; |
0c5d095e KZ |
2463 | |
2464 | /* | |
2465 | * allocates DOS in-memory stuff | |
2466 | */ | |
01aec449 | 2467 | struct fdisk_label *fdisk_new_dos_label(struct fdisk_context *cxt __attribute__ ((__unused__))) |
0c5d095e KZ |
2468 | { |
2469 | struct fdisk_label *lb; | |
2470 | struct fdisk_dos_label *dos; | |
2471 | ||
0c5d095e KZ |
2472 | dos = calloc(1, sizeof(*dos)); |
2473 | if (!dos) | |
2474 | return NULL; | |
2475 | ||
2476 | /* initialize generic part of the driver */ | |
2477 | lb = (struct fdisk_label *) dos; | |
2478 | lb->name = "dos"; | |
53b422ab | 2479 | lb->id = FDISK_DISKLABEL_DOS; |
0c5d095e KZ |
2480 | lb->op = &dos_operations; |
2481 | lb->parttypes = dos_parttypes; | |
a745611d | 2482 | lb->nparttypes = ARRAY_SIZE(dos_parttypes) - 1; |
bd85d11f KZ |
2483 | lb->fields = dos_fields; |
2484 | lb->nfields = ARRAY_SIZE(dos_fields); | |
0c5d095e | 2485 | |
2dd2880f KZ |
2486 | lb->geom_min.sectors = 1; |
2487 | lb->geom_min.heads = 1; | |
2488 | lb->geom_min.cylinders = 1; | |
2489 | ||
2490 | lb->geom_max.sectors = 63; | |
280b9754 | 2491 | lb->geom_max.heads = 255; |
2dd2880f KZ |
2492 | lb->geom_max.cylinders = 1048576; |
2493 | ||
0c5d095e KZ |
2494 | return lb; |
2495 | } | |
852ce62b | 2496 | |
b7d101a2 KZ |
2497 | /** |
2498 | * fdisk_dos_enable_compatible: | |
2499 | * @lb: DOS label (see fdisk_get_label()) | |
2500 | * @enable: 0 or 1 | |
2501 | * | |
2502 | * Enables deprecated DOS compatible mode, in this mode library checks for | |
2503 | * cylinders boundary, cases about CHS addressing and another obscure things. | |
2504 | * | |
2505 | * Returns: 0 on success, <0 on error. | |
852ce62b | 2506 | */ |
852ce62b KZ |
2507 | int fdisk_dos_enable_compatible(struct fdisk_label *lb, int enable) |
2508 | { | |
2509 | struct fdisk_dos_label *dos = (struct fdisk_dos_label *) lb; | |
2510 | ||
2511 | if (!lb) | |
2512 | return -EINVAL; | |
2513 | ||
2514 | dos->compatible = enable; | |
0b52b94c KZ |
2515 | if (enable) |
2516 | lb->flags |= FDISK_LABEL_FL_REQUIRE_GEOMETRY; | |
852ce62b KZ |
2517 | return 0; |
2518 | } | |
2519 | ||
b7d101a2 KZ |
2520 | /** |
2521 | * fdisk_dos_is_compatible: | |
2522 | * @lb: DOS label | |
2523 | * | |
2524 | * Returns: 0 if DOS compatibility disabled, 1 if enabled | |
2525 | */ | |
852ce62b KZ |
2526 | int fdisk_dos_is_compatible(struct fdisk_label *lb) |
2527 | { | |
2528 | return ((struct fdisk_dos_label *) lb)->compatible; | |
2529 | } |