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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 "nls.h" |
e2ee9178 | 11 | #include "randutils.h" |
bb58112e | 12 | #include "pt-mbr.h" |
ac1a559a | 13 | #include "strutils.h" |
bb58112e | 14 | |
c10937dc KZ |
15 | #include "fdiskP.h" |
16 | ||
235adaa6 KZ |
17 | #include <ctype.h> |
18 | ||
bb58112e | 19 | #define MAXIMUM_PARTS 60 |
bb58112e KZ |
20 | #define ACTIVE_FLAG 0x80 |
21 | ||
b7d101a2 KZ |
22 | /** |
23 | * SECTION: dos | |
705854f3 KZ |
24 | * @title: DOS (MBR) |
25 | * @short_description: disk label specific functions | |
b7d101a2 KZ |
26 | * |
27 | */ | |
28 | ||
29 | ||
bb58112e KZ |
30 | #define IS_EXTENDED(i) \ |
31 | ((i) == MBR_DOS_EXTENDED_PARTITION \ | |
32 | || (i) == MBR_W95_EXTENDED_PARTITION \ | |
33 | || (i) == MBR_LINUX_EXTENDED_PARTITION) | |
34 | ||
af0df606 KZ |
35 | /* |
36 | * per partition table entry data | |
37 | * | |
38 | * The four primary partitions have the same sectorbuffer | |
39 | * and have NULL ex_entry. | |
40 | * | |
41 | * Each logical partition table entry has two pointers, one for the | |
42 | * partition and one link to the next one. | |
43 | */ | |
44 | struct pte { | |
45 | struct dos_partition *pt_entry; /* on-disk MBR entry */ | |
46 | struct dos_partition *ex_entry; /* on-disk EBR entry */ | |
0073a4cf | 47 | fdisk_sector_t offset; /* disk sector number */ |
af0df606 | 48 | unsigned char *sectorbuffer; /* disk sector contents */ |
ddec0e40 KZ |
49 | |
50 | unsigned int changed : 1, | |
51 | private_sectorbuffer : 1; | |
af0df606 | 52 | }; |
0c5d095e KZ |
53 | |
54 | /* | |
55 | * in-memory fdisk GPT stuff | |
56 | */ | |
57 | struct fdisk_dos_label { | |
58 | struct fdisk_label head; /* generic part */ | |
852ce62b | 59 | |
af0df606 | 60 | struct pte ptes[MAXIMUM_PARTS]; /* partition */ |
0073a4cf | 61 | fdisk_sector_t ext_offset; /* start of the ext.partition */ |
e77313a6 | 62 | size_t ext_index; /* ext.partition index (if ext_offset is set) */ |
8b3d9241 KZ |
63 | unsigned int compatible : 1, /* is DOS compatible? */ |
64 | non_pt_changed : 1; /* MBR, but no PT changed */ | |
0c5d095e KZ |
65 | }; |
66 | ||
67 | /* | |
68 | * Partition types | |
69 | */ | |
749af4b6 | 70 | static struct fdisk_parttype dos_parttypes[] = { |
50992267 | 71 | #include "pt-mbr-partnames.h" |
749af4b6 KZ |
72 | }; |
73 | ||
9dea2923 | 74 | #define set_hsc(h,s,c,sector) { \ |
24cd580b DB |
75 | s = sector % cxt->geom.sectors + 1; \ |
76 | sector /= cxt->geom.sectors; \ | |
77 | h = sector % cxt->geom.heads; \ | |
78 | sector /= cxt->geom.heads; \ | |
79 | c = sector & 0xff; \ | |
80 | s |= (sector >> 2) & 0xc0; \ | |
9dea2923 DB |
81 | } |
82 | ||
5dfca634 KZ |
83 | |
84 | #define sector(s) ((s) & 0x3f) | |
85 | #define cylinder(s, c) ((c) | (((s) & 0xc0) << 2)) | |
86 | ||
cf3808e4 | 87 | #define alignment_required(_x) ((_x)->grain != (_x)->sector_size) |
9dea2923 | 88 | |
28b85e60 | 89 | #define is_dos_compatible(_x) \ |
aa36c2cf | 90 | (fdisk_is_label(_x, DOS) && \ |
6a632136 | 91 | fdisk_dos_is_compatible(fdisk_get_label(_x, NULL))) |
96f817fb | 92 | |
80063996 | 93 | #define cround(c, n) fdisk_cround(c, n) |
3c88fb56 | 94 | |
af0df606 KZ |
95 | |
96 | static inline struct fdisk_dos_label *self_label(struct fdisk_context *cxt) | |
97 | { | |
98 | assert(cxt); | |
99 | assert(cxt->label); | |
aa36c2cf | 100 | assert(fdisk_is_label(cxt, DOS)); |
af0df606 KZ |
101 | |
102 | return (struct fdisk_dos_label *) cxt->label; | |
103 | } | |
104 | ||
105 | static inline struct pte *self_pte(struct fdisk_context *cxt, size_t i) | |
106 | { | |
107 | struct fdisk_dos_label *l = self_label(cxt); | |
108 | ||
109 | if (i >= ARRAY_SIZE(l->ptes)) | |
110 | return NULL; | |
111 | ||
112 | return &l->ptes[i]; | |
113 | } | |
114 | ||
115 | static inline struct dos_partition *self_partition( | |
116 | struct fdisk_context *cxt, | |
117 | size_t i) | |
118 | { | |
119 | struct pte *pe = self_pte(cxt, i); | |
120 | return pe ? pe->pt_entry : NULL; | |
121 | } | |
122 | ||
123 | struct dos_partition *fdisk_dos_get_partition( | |
124 | struct fdisk_context *cxt, | |
125 | size_t i) | |
126 | { | |
60c1b036 KZ |
127 | assert(cxt); |
128 | assert(cxt->label); | |
aa36c2cf | 129 | assert(fdisk_is_label(cxt, DOS)); |
60c1b036 | 130 | |
af0df606 KZ |
131 | return self_partition(cxt, i); |
132 | } | |
133 | ||
7f01ec7a KZ |
134 | static struct fdisk_parttype *dos_partition_parttype( |
135 | struct fdisk_context *cxt, | |
136 | struct dos_partition *p) | |
137 | { | |
138 | struct fdisk_parttype *t | |
a745611d | 139 | = fdisk_label_get_parttype_from_code(cxt->label, p->sys_ind); |
7f01ec7a KZ |
140 | return t ? : fdisk_new_unknown_parttype(p->sys_ind, NULL); |
141 | } | |
142 | ||
1b92d076 KZ |
143 | /* |
144 | * Linux kernel cares about partition size only. Things like | |
145 | * partition type or so are completely irrelevant -- kzak Nov-2013 | |
146 | */ | |
147 | static int is_used_partition(struct dos_partition *p) | |
148 | { | |
149 | return p && dos_partition_get_size(p) != 0; | |
150 | } | |
151 | ||
af0df606 KZ |
152 | static void partition_set_changed( |
153 | struct fdisk_context *cxt, | |
154 | size_t i, | |
155 | int changed) | |
156 | { | |
157 | struct pte *pe = self_pte(cxt, i); | |
158 | ||
159 | if (!pe) | |
160 | return; | |
161 | ||
88141067 | 162 | DBG(LABEL, ul_debug("DOS: setting %zu partition to %s", i, |
afef428f | 163 | changed ? "changed" : "unchanged")); |
9c825fa0 | 164 | |
ddec0e40 | 165 | pe->changed = changed ? 1 : 0; |
af0df606 KZ |
166 | if (changed) |
167 | fdisk_label_set_changed(cxt->label, 1); | |
168 | } | |
169 | ||
0073a4cf | 170 | static fdisk_sector_t get_abs_partition_start(struct pte *pe) |
61eaad50 | 171 | { |
60c1b036 KZ |
172 | assert(pe); |
173 | assert(pe->pt_entry); | |
174 | ||
61eaad50 KZ |
175 | return pe->offset + dos_partition_get_start(pe->pt_entry); |
176 | } | |
177 | ||
0073a4cf | 178 | static fdisk_sector_t get_abs_partition_end(struct pte *pe) |
d0a870c5 | 179 | { |
0073a4cf | 180 | fdisk_sector_t size; |
1b92d076 KZ |
181 | |
182 | assert(pe); | |
183 | assert(pe->pt_entry); | |
184 | ||
185 | size = dos_partition_get_size(pe->pt_entry); | |
186 | return get_abs_partition_start(pe) + size - (size ? 1 : 0); | |
d0a870c5 KZ |
187 | } |
188 | ||
a64aa3b8 KZ |
189 | static int is_cleared_partition(struct dos_partition *p) |
190 | { | |
191 | return !(!p || p->boot_ind || p->bh || p->bs || p->bc || | |
192 | p->sys_ind || p->eh || p->es || p->ec || | |
193 | dos_partition_get_start(p) || dos_partition_get_size(p)); | |
194 | } | |
195 | ||
77d6a70a | 196 | static int get_partition_unused_primary(struct fdisk_context *cxt, |
44374b10 BE |
197 | struct fdisk_partition *pa, |
198 | size_t *partno) | |
9dea2923 | 199 | { |
44374b10 | 200 | size_t org, n; |
1bf3a034 | 201 | int rc; |
9dea2923 | 202 | |
44374b10 BE |
203 | assert(cxt); |
204 | assert(cxt->label); | |
205 | assert(partno); | |
206 | ||
207 | org = cxt->label->nparts_max; | |
208 | ||
1bf3a034 | 209 | cxt->label->nparts_max = 4; |
6c89f750 | 210 | rc = fdisk_partition_next_partno(pa, cxt, &n); |
77d6a70a | 211 | cxt->label->nparts_max = org; |
1bf3a034 | 212 | |
44374b10 | 213 | if (rc == 1) { |
ac1a559a | 214 | fdisk_info(cxt, _("All primary partitions have been defined already.")); |
44374b10 BE |
215 | rc = -1; |
216 | } else if (rc == 0) | |
217 | *partno = n; | |
218 | return rc; | |
9dea2923 DB |
219 | } |
220 | ||
0073a4cf | 221 | static int seek_sector(struct fdisk_context *cxt, fdisk_sector_t secno) |
c37ebc12 KZ |
222 | { |
223 | off_t offset = (off_t) secno * cxt->sector_size; | |
224 | ||
225 | return lseek(cxt->dev_fd, offset, SEEK_SET) == (off_t) -1 ? -errno : 0; | |
226 | } | |
227 | ||
0073a4cf | 228 | static int read_sector(struct fdisk_context *cxt, fdisk_sector_t secno, |
c37ebc12 KZ |
229 | unsigned char *buf) |
230 | { | |
231 | int rc = seek_sector(cxt, secno); | |
11fe0448 | 232 | ssize_t r; |
c37ebc12 KZ |
233 | |
234 | if (rc < 0) | |
235 | return rc; | |
236 | ||
11fe0448 KZ |
237 | r = read(cxt->dev_fd, buf, cxt->sector_size); |
238 | if (r == (ssize_t) cxt->sector_size) | |
239 | return 0; | |
240 | if (r < 0) | |
241 | return -errno; | |
242 | return -1; | |
c37ebc12 | 243 | } |
9dea2923 | 244 | |
e2ee9178 | 245 | /* Allocate a buffer and read a partition table sector */ |
0073a4cf | 246 | static int read_pte(struct fdisk_context *cxt, size_t pno, fdisk_sector_t offset) |
e2ee9178 | 247 | { |
11fe0448 | 248 | int rc; |
af0df606 KZ |
249 | unsigned char *buf; |
250 | struct pte *pe = self_pte(cxt, pno); | |
251 | ||
252 | buf = calloc(1, cxt->sector_size); | |
253 | if (!buf) | |
254 | return -ENOMEM; | |
e2ee9178 | 255 | |
613596b3 KZ |
256 | DBG(LABEL, ul_debug("DOS: reading EBR %zu: offset=%ju, buffer=%p", |
257 | pno, (uintmax_t) offset, buf)); | |
9c825fa0 | 258 | |
e2ee9178 | 259 | pe->offset = offset; |
af0df606 | 260 | pe->sectorbuffer = buf; |
ddec0e40 | 261 | pe->private_sectorbuffer = 1; |
21770662 | 262 | |
11fe0448 KZ |
263 | rc = read_sector(cxt, offset, pe->sectorbuffer); |
264 | if (rc) { | |
fcea064b | 265 | fdisk_warn(cxt, _("Failed to read extended partition table " |
829f4206 | 266 | "(offset=%ju)"), (uintmax_t) offset); |
11fe0448 KZ |
267 | return rc; |
268 | } | |
269 | ||
e2ee9178 | 270 | pe->changed = 0; |
6864f168 | 271 | pe->pt_entry = pe->ex_entry = NULL; |
af0df606 | 272 | return 0; |
e2ee9178 DB |
273 | } |
274 | ||
e2ee9178 | 275 | |
f540fe15 | 276 | static void clear_partition(struct dos_partition *p) |
e2ee9178 DB |
277 | { |
278 | if (!p) | |
279 | return; | |
280 | p->boot_ind = 0; | |
da967236 KZ |
281 | p->bh = 0; |
282 | p->bs = 0; | |
283 | p->bc = 0; | |
e2ee9178 | 284 | p->sys_ind = 0; |
da967236 KZ |
285 | p->eh = 0; |
286 | p->es = 0; | |
287 | p->ec = 0; | |
b44244cb KZ |
288 | dos_partition_set_start(p,0); |
289 | dos_partition_set_size(p,0); | |
e2ee9178 DB |
290 | } |
291 | ||
ddec0e40 | 292 | static void dos_init(struct fdisk_context *cxt) |
e2ee9178 | 293 | { |
fcea064b | 294 | struct fdisk_dos_label *l = self_label(cxt); |
e3661531 | 295 | size_t i; |
e2ee9178 | 296 | |
60c1b036 KZ |
297 | assert(cxt); |
298 | assert(cxt->label); | |
aa36c2cf | 299 | assert(fdisk_is_label(cxt, DOS)); |
60c1b036 | 300 | |
88141067 | 301 | DBG(LABEL, ul_debug("DOS: initialize, first sector buffer %p", cxt->firstsector)); |
9c825fa0 | 302 | |
e3661531 | 303 | cxt->label->nparts_max = 4; /* default, unlimited number of logical */ |
ddec0e40 | 304 | |
fcea064b KZ |
305 | l->ext_index = 0; |
306 | l->ext_offset = 0; | |
ddec0e40 KZ |
307 | l->non_pt_changed = 0; |
308 | ||
309 | memset(l->ptes, 0, sizeof(l->ptes)); | |
e2ee9178 DB |
310 | |
311 | for (i = 0; i < 4; i++) { | |
af0df606 | 312 | struct pte *pe = self_pte(cxt, i); |
e2ee9178 | 313 | |
e8bf93de | 314 | pe->pt_entry = mbr_get_partition(cxt->firstsector, i); |
6864f168 | 315 | pe->ex_entry = NULL; |
e2ee9178 | 316 | pe->offset = 0; |
67987b47 | 317 | pe->sectorbuffer = cxt->firstsector; |
9c825fa0 | 318 | pe->private_sectorbuffer = 0; |
e2ee9178 DB |
319 | pe->changed = 0; |
320 | } | |
321 | ||
6a632136 | 322 | if (fdisk_is_listonly(cxt)) |
4f79f887 KZ |
323 | return; |
324 | /* | |
325 | * Various warnings... | |
326 | */ | |
327 | if (fdisk_missing_geometry(cxt)) | |
328 | fdisk_warnx(cxt, _("You can set geometry from the extra functions menu.")); | |
329 | ||
330 | if (is_dos_compatible(cxt)) { | |
331 | fdisk_warnx(cxt, _("DOS-compatible mode is deprecated.")); | |
332 | ||
333 | if (cxt->sector_size != cxt->phy_sector_size) | |
334 | fdisk_info(cxt, _( | |
335 | "The device presents a logical sector size that is smaller than " | |
336 | "the physical sector size. Aligning to a physical sector (or optimal " | |
337 | "I/O) size boundary is recommended, or performance may be impacted.")); | |
338 | } | |
339 | ||
6a632136 | 340 | if (fdisk_use_cylinders(cxt)) |
4f79f887 | 341 | fdisk_warnx(cxt, _("Cylinders as display units are deprecated.")); |
0b52b94c | 342 | |
4f79f887 | 343 | if (cxt->total_sectors > UINT_MAX) { |
ac1a559a KZ |
344 | uint64_t bytes = cxt->total_sectors * cxt->sector_size; |
345 | char *szstr = size_to_human_string(SIZE_SUFFIX_SPACE | |
346 | | SIZE_SUFFIX_3LETTER, bytes); | |
fcea064b | 347 | fdisk_warnx(cxt, |
829f4206 | 348 | _("The size of this disk is %s (%ju bytes). DOS " |
fcea064b | 349 | "partition table format can not be used on drives for " |
27aadd8b | 350 | "volumes larger than %lu bytes for %lu-byte " |
fcea064b | 351 | "sectors. Use GUID partition table format (GPT)."), |
829f4206 KZ |
352 | szstr, bytes, |
353 | UINT_MAX * cxt->sector_size, | |
0b52b94c | 354 | cxt->sector_size); |
ac1a559a | 355 | free(szstr); |
0b52b94c | 356 | } |
e2ee9178 DB |
357 | } |
358 | ||
ddec0e40 KZ |
359 | /* callback called by libfdisk */ |
360 | static void dos_deinit(struct fdisk_label *lb) | |
361 | { | |
362 | size_t i; | |
363 | struct fdisk_dos_label *l = (struct fdisk_dos_label *) lb; | |
364 | ||
365 | for (i = 0; i < ARRAY_SIZE(l->ptes); i++) { | |
366 | struct pte *pe = &l->ptes[i]; | |
367 | ||
9c825fa0 | 368 | if (pe->private_sectorbuffer && pe->sectorbuffer) { |
88141067 | 369 | DBG(LABEL, ul_debug("DOS: freeing pte %zu sector buffer %p", |
9c825fa0 | 370 | i, pe->sectorbuffer)); |
ddec0e40 | 371 | free(pe->sectorbuffer); |
9c825fa0 | 372 | } |
ddec0e40 | 373 | pe->sectorbuffer = NULL; |
9c825fa0 | 374 | pe->private_sectorbuffer = 0; |
ddec0e40 KZ |
375 | } |
376 | ||
377 | memset(l->ptes, 0, sizeof(l->ptes)); | |
378 | } | |
379 | ||
613596b3 KZ |
380 | static void reset_pte(struct pte *pe) |
381 | { | |
382 | assert(pe); | |
383 | ||
384 | if (pe->private_sectorbuffer) { | |
625d00fe | 385 | DBG(LABEL, ul_debug(" --> freeing pte sector buffer %p", |
613596b3 KZ |
386 | pe->sectorbuffer)); |
387 | free(pe->sectorbuffer); | |
388 | } | |
389 | memset(pe, 0, sizeof(struct pte)); | |
390 | } | |
391 | ||
9ffeb235 | 392 | static int dos_delete_partition(struct fdisk_context *cxt, size_t partnum) |
61c4cb85 | 393 | { |
60c1b036 KZ |
394 | struct fdisk_dos_label *l; |
395 | struct pte *pe; | |
af0df606 KZ |
396 | struct dos_partition *p; |
397 | struct dos_partition *q; | |
398 | ||
60c1b036 KZ |
399 | assert(cxt); |
400 | assert(cxt->label); | |
aa36c2cf | 401 | assert(fdisk_is_label(cxt, DOS)); |
60c1b036 KZ |
402 | |
403 | pe = self_pte(cxt, partnum); | |
af0df606 KZ |
404 | if (!pe) |
405 | return -EINVAL; | |
406 | ||
88141067 | 407 | DBG(LABEL, ul_debug("DOS: delete partiton %zu (max=%zu)", partnum, |
bcddbe96 | 408 | cxt->label->nparts_max)); |
9c825fa0 | 409 | |
60c1b036 | 410 | l = self_label(cxt); |
af0df606 KZ |
411 | p = pe->pt_entry; |
412 | q = pe->ex_entry; | |
61c4cb85 DB |
413 | |
414 | /* Note that for the fifth partition (partnum == 4) we don't actually | |
415 | decrement partitions. */ | |
61c4cb85 | 416 | if (partnum < 4) { |
88141067 | 417 | DBG(LABEL, ul_debug("--> delete primary")); |
fcea064b | 418 | if (IS_EXTENDED(p->sys_ind) && partnum == l->ext_index) { |
625d00fe KZ |
419 | size_t i; |
420 | DBG(LABEL, ul_debug(" --> delete extended")); | |
421 | for (i = 4; i < cxt->label->nparts_max; i++) { | |
422 | DBG(LABEL, ul_debug(" --> delete logical #%zu", i)); | |
423 | reset_pte(&l->ptes[i]); | |
424 | ||
425 | } | |
e3661531 | 426 | cxt->label->nparts_max = 4; |
fcea064b KZ |
427 | l->ptes[l->ext_index].ex_entry = NULL; |
428 | l->ext_offset = 0; | |
e77313a6 | 429 | l->ext_index = 0; |
61c4cb85 | 430 | } |
af0df606 | 431 | partition_set_changed(cxt, partnum, 1); |
61c4cb85 DB |
432 | clear_partition(p); |
433 | } else if (!q->sys_ind && partnum > 4) { | |
88141067 | 434 | DBG(LABEL, ul_debug("--> delete logical [last in the chain]")); |
613596b3 | 435 | reset_pte(&l->ptes[partnum]); |
e3661531 | 436 | --cxt->label->nparts_max; |
61c4cb85 | 437 | --partnum; |
613596b3 | 438 | /* clear link to deleted partition */ |
af0df606 KZ |
439 | clear_partition(l->ptes[partnum].ex_entry); |
440 | partition_set_changed(cxt, partnum, 1); | |
61c4cb85 | 441 | } else { |
88141067 | 442 | DBG(LABEL, ul_debug("--> delete logical [move down]")); |
61c4cb85 | 443 | if (partnum > 4) { |
88141067 | 444 | DBG(LABEL, ul_debug(" --> delete %zu logical link", partnum)); |
af0df606 | 445 | p = l->ptes[partnum - 1].ex_entry; |
61c4cb85 | 446 | *p = *q; |
b44244cb KZ |
447 | dos_partition_set_start(p, dos_partition_get_start(q)); |
448 | dos_partition_set_size(p, dos_partition_get_size(q)); | |
af0df606 | 449 | partition_set_changed(cxt, partnum - 1, 1); |
61c4cb85 | 450 | |
bcddbe96 | 451 | } else if (cxt->label->nparts_max > 5) { |
88141067 | 452 | DBG(LABEL, ul_debug(" --> delete first logical link")); |
bcddbe96 KZ |
453 | pe = &l->ptes[5]; /* second logical */ |
454 | ||
455 | if (pe->pt_entry) /* prevent SEGFAULT */ | |
af0df606 KZ |
456 | dos_partition_set_start(pe->pt_entry, |
457 | get_abs_partition_start(pe) - | |
fcea064b KZ |
458 | l->ext_offset); |
459 | pe->offset = l->ext_offset; | |
af0df606 | 460 | partition_set_changed(cxt, 5, 1); |
61c4cb85 DB |
461 | } |
462 | ||
e3661531 | 463 | if (cxt->label->nparts_max > 5) { |
88141067 | 464 | DBG(LABEL, ul_debug(" --> move ptes")); |
e3661531 | 465 | cxt->label->nparts_max--; |
613596b3 | 466 | reset_pte(&l->ptes[partnum]); |
e3661531 | 467 | while (partnum < cxt->label->nparts_max) { |
88141067 | 468 | DBG(LABEL, ul_debug(" --> moving pte %zu <-- %zu", partnum, partnum + 1)); |
af0df606 | 469 | l->ptes[partnum] = l->ptes[partnum + 1]; |
61c4cb85 DB |
470 | partnum++; |
471 | } | |
9c825fa0 | 472 | memset(&l->ptes[partnum], 0, sizeof(struct pte)); |
bcddbe96 | 473 | } else { |
88141067 | 474 | DBG(LABEL, ul_debug(" --> the only logical: clear only")); |
af0df606 | 475 | clear_partition(l->ptes[partnum].pt_entry); |
bcddbe96 KZ |
476 | cxt->label->nparts_max--; |
477 | ||
478 | if (partnum == 4) { | |
88141067 | 479 | DBG(LABEL, ul_debug(" --> clear last logical")); |
613596b3 | 480 | reset_pte(&l->ptes[partnum]); |
bcddbe96 KZ |
481 | partition_set_changed(cxt, l->ext_index, 1); |
482 | } | |
483 | } | |
61c4cb85 | 484 | } |
1f5eb51b | 485 | |
9ffeb235 | 486 | fdisk_label_set_changed(cxt->label, 1); |
1f5eb51b | 487 | return 0; |
61c4cb85 DB |
488 | } |
489 | ||
829f4206 | 490 | static void read_extended(struct fdisk_context *cxt, size_t ext) |
e2ee9178 | 491 | { |
e3661531 | 492 | size_t i; |
613596b3 | 493 | struct pte *pex, *pe; |
f540fe15 | 494 | struct dos_partition *p, *q; |
fcea064b | 495 | struct fdisk_dos_label *l = self_label(cxt); |
e2ee9178 | 496 | |
fcea064b | 497 | l->ext_index = ext; |
af0df606 | 498 | pex = self_pte(cxt, ext); |
6864f168 | 499 | pex->ex_entry = pex->pt_entry; |
e2ee9178 | 500 | |
6864f168 | 501 | p = pex->pt_entry; |
b44244cb | 502 | if (!dos_partition_get_start(p)) { |
ac1a559a | 503 | fdisk_warnx(cxt, _("Bad offset in primary extended partition.")); |
e2ee9178 DB |
504 | return; |
505 | } | |
506 | ||
88141067 | 507 | DBG(LABEL, ul_debug("DOS: Reading extended %zu", ext)); |
9c825fa0 | 508 | |
e2ee9178 | 509 | while (IS_EXTENDED (p->sys_ind)) { |
613596b3 | 510 | pe = self_pte(cxt, cxt->label->nparts_max); |
e2ee9178 | 511 | |
e3661531 | 512 | if (cxt->label->nparts_max >= MAXIMUM_PARTS) { |
e2ee9178 DB |
513 | /* This is not a Linux restriction, but |
514 | this program uses arrays of size MAXIMUM_PARTS. | |
515 | Do not try to `improve' this test. */ | |
af0df606 KZ |
516 | struct pte *pre = self_pte(cxt, |
517 | cxt->label->nparts_max - 1); | |
fcea064b | 518 | fdisk_warnx(cxt, |
829f4206 | 519 | _("Omitting partitions after #%zu. They will be deleted " |
fcea064b | 520 | "if you save this partition table."), |
e3661531 | 521 | cxt->label->nparts_max); |
fcea064b | 522 | |
6864f168 | 523 | clear_partition(pre->ex_entry); |
af0df606 KZ |
524 | partition_set_changed(cxt, |
525 | cxt->label->nparts_max - 1, 1); | |
e2ee9178 DB |
526 | return; |
527 | } | |
528 | ||
11fe0448 KZ |
529 | if (read_pte(cxt, cxt->label->nparts_max, l->ext_offset + |
530 | dos_partition_get_start(p))) | |
531 | return; | |
e2ee9178 | 532 | |
fcea064b KZ |
533 | if (!l->ext_offset) |
534 | l->ext_offset = dos_partition_get_start(p); | |
e2ee9178 | 535 | |
613596b3 | 536 | assert(pe->sectorbuffer); |
e8bf93de | 537 | q = p = mbr_get_partition(pe->sectorbuffer, 0); |
fcea064b | 538 | |
488cc17a KZ |
539 | for (i = 0; i < 4; i++, p++) { |
540 | if (!dos_partition_get_size(p)) | |
541 | continue; | |
542 | ||
e2ee9178 | 543 | if (IS_EXTENDED (p->sys_ind)) { |
6864f168 | 544 | if (pe->ex_entry) |
fcea064b KZ |
545 | fdisk_warnx(cxt, _( |
546 | "Extra link pointer in partition " | |
829f4206 | 547 | "table %zu."), |
fcea064b | 548 | cxt->label->nparts_max + 1); |
e2ee9178 | 549 | else |
6864f168 | 550 | pe->ex_entry = p; |
e2ee9178 | 551 | } else if (p->sys_ind) { |
6864f168 | 552 | if (pe->pt_entry) |
fcea064b KZ |
553 | fdisk_warnx(cxt, _( |
554 | "Ignoring extra data in partition " | |
829f4206 | 555 | "table %zu."), |
fcea064b | 556 | cxt->label->nparts_max + 1); |
e2ee9178 | 557 | else |
6864f168 | 558 | pe->pt_entry = p; |
e2ee9178 DB |
559 | } |
560 | } | |
561 | ||
562 | /* very strange code here... */ | |
6864f168 KZ |
563 | if (!pe->pt_entry) { |
564 | if (q != pe->ex_entry) | |
565 | pe->pt_entry = q; | |
e2ee9178 | 566 | else |
6864f168 | 567 | pe->pt_entry = q + 1; |
e2ee9178 | 568 | } |
6864f168 KZ |
569 | if (!pe->ex_entry) { |
570 | if (q != pe->pt_entry) | |
571 | pe->ex_entry = q; | |
e2ee9178 | 572 | else |
6864f168 | 573 | pe->ex_entry = q + 1; |
e2ee9178 DB |
574 | } |
575 | ||
6864f168 | 576 | p = pe->ex_entry; |
e3661531 | 577 | cxt->label->nparts_cur = ++cxt->label->nparts_max; |
613596b3 KZ |
578 | |
579 | DBG(LABEL, ul_debug("DOS: EBR[offset=%ju]: link: type=%x, start=%u, size=%u; " | |
580 | " data: type=%x, start=%u, size=%u", | |
581 | (uintmax_t) pe->offset, | |
582 | pe->ex_entry->sys_ind, | |
583 | dos_partition_get_start(pe->ex_entry), | |
584 | dos_partition_get_size(pe->ex_entry), | |
585 | pe->pt_entry->sys_ind, | |
586 | dos_partition_get_start(pe->pt_entry), | |
587 | dos_partition_get_size(pe->pt_entry))); | |
588 | ||
589 | } | |
590 | ||
591 | /* remove last empty EBR */ | |
592 | pe = self_pte(cxt, cxt->label->nparts_max - 1); | |
593 | if (is_cleared_partition(pe->ex_entry) && | |
594 | is_cleared_partition(pe->pt_entry)) { | |
595 | DBG(LABEL, ul_debug("DOS: EBR[offset=%ju]: empty, remove", (uintmax_t) pe->offset)); | |
596 | reset_pte(pe); | |
597 | cxt->label->nparts_max--; | |
598 | cxt->label->nparts_cur--; | |
e2ee9178 DB |
599 | } |
600 | ||
601 | /* remove empty links */ | |
602 | remove: | |
af0df606 | 603 | q = self_partition(cxt, 4); |
e3661531 | 604 | for (i = 4; i < cxt->label->nparts_max; i++) { |
af0df606 | 605 | p = self_partition(cxt, i); |
e2ee9178 | 606 | |
af0df606 KZ |
607 | if (!dos_partition_get_size(p) && |
608 | (cxt->label->nparts_max > 5 || q->sys_ind)) { | |
829f4206 | 609 | fdisk_info(cxt, _("omitting empty partition (%zu)"), i+1); |
9ffeb235 | 610 | dos_delete_partition(cxt, i); |
e2ee9178 DB |
611 | goto remove; /* numbering changed */ |
612 | } | |
613 | } | |
613596b3 KZ |
614 | |
615 | DBG(LABEL, ul_debug("DOS: nparts_max: %zu", cxt->label->nparts_max)); | |
e2ee9178 DB |
616 | } |
617 | ||
21fe3dde | 618 | static int dos_get_disklabel_id(struct fdisk_context *cxt, char **id) |
e2ee9178 | 619 | { |
21fe3dde KZ |
620 | unsigned int num; |
621 | ||
622 | assert(cxt); | |
623 | assert(id); | |
624 | assert(cxt->label); | |
aa36c2cf | 625 | assert(fdisk_is_label(cxt, DOS)); |
21fe3dde KZ |
626 | |
627 | num = mbr_get_id(cxt->firstsector); | |
628 | if (asprintf(id, "0x%08x", num) > 0) | |
629 | return 0; | |
630 | ||
631 | return -ENOMEM; | |
e2ee9178 DB |
632 | } |
633 | ||
9ffeb235 | 634 | static int dos_create_disklabel(struct fdisk_context *cxt) |
e2ee9178 | 635 | { |
95085ec5 KZ |
636 | unsigned int id = 0; |
637 | int rc, has_id = 0; | |
3d919d95 | 638 | struct fdisk_dos_label *l; |
e2ee9178 | 639 | |
9ffeb235 KZ |
640 | assert(cxt); |
641 | assert(cxt->label); | |
aa36c2cf | 642 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 643 | |
88141067 | 644 | DBG(LABEL, ul_debug("DOS: creating new disklabel")); |
9c825fa0 | 645 | |
95085ec5 KZ |
646 | if (cxt->script) { |
647 | char *end = NULL; | |
648 | const char *s = fdisk_script_get_header(cxt->script, "label-id"); | |
649 | ||
650 | if (s) { | |
651 | errno = 0; | |
652 | id = strtol(s, &end, 16); | |
653 | if (!errno && end && s < end) | |
654 | has_id = 1; | |
655 | } | |
656 | } | |
657 | ||
e2ee9178 | 658 | /* random disk signature */ |
95085ec5 KZ |
659 | if (!has_id) |
660 | random_get_bytes(&id, sizeof(id)); | |
e2ee9178 | 661 | |
7c2cfb18 KZ |
662 | rc = fdisk_init_firstsector_buffer(cxt); |
663 | if (rc) | |
664 | return rc; | |
3d919d95 KZ |
665 | dos_init(cxt); |
666 | ||
667 | l = self_label(cxt); | |
e2ee9178 DB |
668 | |
669 | /* Generate an MBR ID for this disk */ | |
67987b47 | 670 | mbr_set_id(cxt->firstsector, id); |
3d919d95 KZ |
671 | l->non_pt_changed = 1; |
672 | fdisk_label_set_changed(cxt->label, 1); | |
e2ee9178 DB |
673 | |
674 | /* Put MBR signature */ | |
67987b47 | 675 | mbr_set_magic(cxt->firstsector); |
ac1a559a | 676 | |
0477369a | 677 | fdisk_info(cxt, _("Created a new DOS disklabel with disk " |
ac1a559a | 678 | "identifier 0x%08x."), id); |
a71601af | 679 | return 0; |
e2ee9178 DB |
680 | } |
681 | ||
35b1f0a4 | 682 | static int dos_set_disklabel_id(struct fdisk_context *cxt) |
e2ee9178 | 683 | { |
0a49e5d5 KZ |
684 | char *end = NULL, *str = NULL; |
685 | unsigned int id, old; | |
35b1f0a4 | 686 | struct fdisk_dos_label *l; |
0a49e5d5 | 687 | int rc; |
e2ee9178 | 688 | |
35b1f0a4 KZ |
689 | assert(cxt); |
690 | assert(cxt->label); | |
aa36c2cf | 691 | assert(fdisk_is_label(cxt, DOS)); |
35b1f0a4 | 692 | |
88141067 | 693 | DBG(LABEL, ul_debug("DOS: setting Id")); |
9c825fa0 | 694 | |
35b1f0a4 | 695 | l = self_label(cxt); |
0a49e5d5 KZ |
696 | old = mbr_get_id(cxt->firstsector); |
697 | rc = fdisk_ask_string(cxt, | |
a0862e26 | 698 | _("Enter the new disk identifier"), &str); |
0a49e5d5 KZ |
699 | if (rc) |
700 | return rc; | |
e2ee9178 | 701 | |
0a49e5d5 KZ |
702 | errno = 0; |
703 | id = strtoul(str, &end, 0); | |
704 | if (errno || str == end || (end && *end)) { | |
705 | fdisk_warnx(cxt, _("Incorrect value.")); | |
706 | return -EINVAL; | |
707 | } | |
e2ee9178 | 708 | |
e2ee9178 | 709 | |
0a49e5d5 | 710 | mbr_set_id(cxt->firstsector, id); |
8b3d9241 | 711 | l->non_pt_changed = 1; |
bddd84e7 | 712 | fdisk_label_set_changed(cxt->label, 1); |
ac1a559a | 713 | |
0477369a | 714 | fdisk_info(cxt, _("Disk identifier changed from 0x%08x to 0x%08x."), |
ac1a559a | 715 | old, id); |
0a49e5d5 | 716 | return 0; |
e2ee9178 DB |
717 | } |
718 | ||
9a5e29e9 KZ |
719 | static void get_partition_table_geometry(struct fdisk_context *cxt, |
720 | unsigned int *ph, unsigned int *ps) | |
721 | { | |
67987b47 | 722 | unsigned char *bufp = cxt->firstsector; |
f540fe15 | 723 | struct dos_partition *p; |
9a5e29e9 KZ |
724 | int i, h, s, hh, ss; |
725 | int first = 1; | |
726 | int bad = 0; | |
727 | ||
728 | hh = ss = 0; | |
60c1b036 | 729 | for (i = 0; i < 4; i++) { |
e8bf93de | 730 | p = mbr_get_partition(bufp, i); |
9a5e29e9 | 731 | if (p->sys_ind != 0) { |
da967236 KZ |
732 | h = p->eh + 1; |
733 | s = (p->es & 077); | |
9a5e29e9 KZ |
734 | if (first) { |
735 | hh = h; | |
736 | ss = s; | |
737 | first = 0; | |
738 | } else if (hh != h || ss != s) | |
739 | bad = 1; | |
740 | } | |
741 | } | |
742 | ||
743 | if (!first && !bad) { | |
744 | *ph = hh; | |
745 | *ps = ss; | |
746 | } | |
cf3808e4 | 747 | |
88141067 | 748 | DBG(LABEL, ul_debug("DOS PT geometry: heads=%u, sectors=%u", *ph, *ps)); |
9a5e29e9 KZ |
749 | } |
750 | ||
9ffeb235 | 751 | static int dos_reset_alignment(struct fdisk_context *cxt) |
cf3808e4 | 752 | { |
9ffeb235 KZ |
753 | assert(cxt); |
754 | assert(cxt->label); | |
aa36c2cf | 755 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 756 | |
cf3808e4 | 757 | /* overwrite necessary stuff by DOS deprecated stuff */ |
852ce62b | 758 | if (is_dos_compatible(cxt)) { |
88141067 | 759 | DBG(LABEL, ul_debug("DOS: reseting alignemnt for DOS-comaptiblem PT")); |
cf3808e4 KZ |
760 | if (cxt->geom.sectors) |
761 | cxt->first_lba = cxt->geom.sectors; /* usually 63 */ | |
762 | ||
763 | cxt->grain = cxt->sector_size; /* usually 512 */ | |
764 | } | |
cf3808e4 KZ |
765 | |
766 | return 0; | |
767 | } | |
9a5e29e9 | 768 | |
9ed268d0 KZ |
769 | /* TODO: move to include/pt-dos.h and share with libblkid */ |
770 | #define AIX_MAGIC_STRING "\xC9\xC2\xD4\xC1" | |
771 | #define AIX_MAGIC_STRLEN (sizeof(AIX_MAGIC_STRING) - 1) | |
772 | ||
9ffeb235 | 773 | static int dos_probe_label(struct fdisk_context *cxt) |
e2ee9178 | 774 | { |
e3661531 | 775 | size_t i; |
9a5e29e9 | 776 | unsigned int h = 0, s = 0; |
e2ee9178 | 777 | |
e3661531 KZ |
778 | assert(cxt); |
779 | assert(cxt->label); | |
aa36c2cf | 780 | assert(fdisk_is_label(cxt, DOS)); |
e3661531 | 781 | |
9ed268d0 KZ |
782 | /* ignore disks with AIX magic number */ |
783 | if (memcmp(cxt->firstsector, AIX_MAGIC_STRING, AIX_MAGIC_STRLEN) == 0) | |
784 | return 0; | |
785 | ||
67987b47 | 786 | if (!mbr_is_valid_magic(cxt->firstsector)) |
e2ee9178 DB |
787 | return 0; |
788 | ||
e53ced85 | 789 | dos_init(cxt); |
e2ee9178 | 790 | |
9a5e29e9 KZ |
791 | get_partition_table_geometry(cxt, &h, &s); |
792 | if (h && s) { | |
793 | cxt->geom.heads = h; | |
794 | cxt->geom.sectors = s; | |
795 | } | |
796 | ||
e2ee9178 | 797 | for (i = 0; i < 4; i++) { |
af0df606 | 798 | struct pte *pe = self_pte(cxt, i); |
e2ee9178 | 799 | |
d0a870c5 | 800 | if (is_used_partition(pe->pt_entry)) |
e3661531 KZ |
801 | cxt->label->nparts_cur++; |
802 | ||
6864f168 | 803 | if (IS_EXTENDED (pe->pt_entry->sys_ind)) { |
e3661531 | 804 | if (cxt->label->nparts_max != 4) |
fcea064b | 805 | fdisk_warnx(cxt, _( |
829f4206 | 806 | "Ignoring extra extended partition %zu"), |
fcea064b | 807 | i + 1); |
e2ee9178 | 808 | else |
7737f698 | 809 | read_extended(cxt, i); |
e2ee9178 DB |
810 | } |
811 | } | |
812 | ||
e3661531 | 813 | for (i = 3; i < cxt->label->nparts_max; i++) { |
af0df606 | 814 | struct pte *pe = self_pte(cxt, i); |
bcddbe96 | 815 | struct fdisk_dos_label *l = self_label(cxt); |
e2ee9178 | 816 | |
67188340 | 817 | if (!mbr_is_valid_magic(pe->sectorbuffer)) { |
fcea064b | 818 | fdisk_info(cxt, _( |
bcddbe96 KZ |
819 | "Invalid flag 0x%02x%02x of EBR (for partition %zu) will " |
820 | "be corrected by w(rite)."), | |
6fe71269 KZ |
821 | pe->sectorbuffer[510], |
822 | pe->sectorbuffer[511], | |
823 | i + 1); | |
bcddbe96 KZ |
824 | partition_set_changed(cxt, i, 1); |
825 | ||
826 | /* mark also extended as changed to update the first EBR | |
827 | * in situation that there is no logical partitions at all */ | |
828 | partition_set_changed(cxt, l->ext_index, 1); | |
e2ee9178 DB |
829 | } |
830 | } | |
831 | ||
832 | return 1; | |
833 | } | |
834 | ||
e53ced85 | 835 | static void set_partition(struct fdisk_context *cxt, |
0073a4cf KZ |
836 | int i, int doext, fdisk_sector_t start, |
837 | fdisk_sector_t stop, int sysid, int boot) | |
9dea2923 | 838 | { |
af0df606 | 839 | struct pte *pe = self_pte(cxt, i); |
f540fe15 | 840 | struct dos_partition *p; |
0073a4cf | 841 | fdisk_sector_t offset; |
9dea2923 | 842 | |
ecf40cda KZ |
843 | assert(!FDISK_IS_UNDEF(start)); |
844 | assert(!FDISK_IS_UNDEF(stop)); | |
80063996 | 845 | |
9dea2923 | 846 | if (doext) { |
fcea064b | 847 | struct fdisk_dos_label *l = self_label(cxt); |
af0df606 | 848 | p = pe->ex_entry; |
fcea064b | 849 | offset = l->ext_offset; |
9dea2923 | 850 | } else { |
af0df606 KZ |
851 | p = pe->pt_entry; |
852 | offset = pe->offset; | |
9dea2923 | 853 | } |
a60087aa | 854 | |
1bb387bd | 855 | DBG(LABEL, ul_debug("DOS: setting partition %d%s, offset=%zu, start=%zu, size=%zu, sysid=%02x", |
a60087aa | 856 | i, doext ? " [extended]" : "", |
613596b3 KZ |
857 | (size_t) offset, |
858 | (size_t) (start - offset), | |
859 | (size_t) (stop - start + 1), | |
860 | sysid)); | |
a60087aa | 861 | |
50f7514e | 862 | p->boot_ind = boot ? ACTIVE_FLAG : 0; |
9dea2923 | 863 | p->sys_ind = sysid; |
b44244cb KZ |
864 | dos_partition_set_start(p, start - offset); |
865 | dos_partition_set_size(p, stop - start + 1); | |
9dea2923 | 866 | |
852ce62b | 867 | if (is_dos_compatible(cxt) && (start/(cxt->geom.sectors*cxt->geom.heads) > 1023)) |
24cd580b | 868 | start = cxt->geom.heads*cxt->geom.sectors*1024 - 1; |
da967236 | 869 | set_hsc(p->bh, p->bs, p->bc, start); |
852ce62b | 870 | if (is_dos_compatible(cxt) && (stop/(cxt->geom.sectors*cxt->geom.heads) > 1023)) |
24cd580b | 871 | stop = cxt->geom.heads*cxt->geom.sectors*1024 - 1; |
da967236 | 872 | set_hsc(p->eh, p->es, p->ec, stop); |
af0df606 | 873 | partition_set_changed(cxt, i, 1); |
9dea2923 DB |
874 | } |
875 | ||
0073a4cf KZ |
876 | static fdisk_sector_t get_unused_start(struct fdisk_context *cxt, |
877 | int part_n, fdisk_sector_t start, | |
878 | fdisk_sector_t first[], fdisk_sector_t last[]) | |
9dea2923 | 879 | { |
e3661531 | 880 | size_t i; |
9dea2923 | 881 | |
e3661531 | 882 | for (i = 0; i < cxt->label->nparts_max; i++) { |
0073a4cf | 883 | fdisk_sector_t lastplusoff; |
af0df606 | 884 | struct pte *pe = self_pte(cxt, i); |
9dea2923 | 885 | |
af0df606 | 886 | if (start == pe->offset) |
cf3808e4 KZ |
887 | start += cxt->first_lba; |
888 | lastplusoff = last[i] + ((part_n < 4) ? 0 : cxt->first_lba); | |
9dea2923 DB |
889 | if (start >= first[i] && start <= lastplusoff) |
890 | start = lastplusoff + 1; | |
891 | } | |
892 | ||
893 | return start; | |
894 | } | |
895 | ||
e3661531 | 896 | static void fill_bounds(struct fdisk_context *cxt, |
0073a4cf | 897 | fdisk_sector_t *first, fdisk_sector_t *last) |
cc0c4e56 | 898 | { |
e3661531 | 899 | size_t i; |
af0df606 | 900 | struct pte *pe = self_pte(cxt, 0); |
f540fe15 | 901 | struct dos_partition *p; |
cc0c4e56 | 902 | |
e3661531 | 903 | for (i = 0; i < cxt->label->nparts_max; pe++,i++) { |
6864f168 | 904 | p = pe->pt_entry; |
d0a870c5 | 905 | if (is_cleared_partition(p) || IS_EXTENDED (p->sys_ind)) { |
cc0c4e56 KZ |
906 | first[i] = 0xffffffff; |
907 | last[i] = 0; | |
908 | } else { | |
61eaad50 | 909 | first[i] = get_abs_partition_start(pe); |
1b92d076 | 910 | last[i] = get_abs_partition_end(pe); |
cc0c4e56 KZ |
911 | } |
912 | } | |
913 | } | |
914 | ||
77d6a70a | 915 | static int get_start_from_user( struct fdisk_context *cxt, |
0073a4cf KZ |
916 | fdisk_sector_t *start, |
917 | fdisk_sector_t low, | |
918 | fdisk_sector_t dflt, | |
919 | fdisk_sector_t limit, | |
77d6a70a | 920 | struct fdisk_partition *pa) |
9dea2923 | 921 | { |
77d6a70a KZ |
922 | assert(start); |
923 | ||
924 | /* try to use tepmlate from 'pa' */ | |
925 | if (pa && pa->start_follow_default) | |
926 | *start = dflt; | |
927 | ||
ecf40cda | 928 | else if (pa && fdisk_partition_has_start(pa)) { |
88141067 | 929 | DBG(LABEL, ul_debug("DOS: start: wanted=%ju, low=%ju, limit=%ju", |
20f878fe | 930 | (uintmax_t) pa->start, (uintmax_t) low, (uintmax_t) limit)); |
77d6a70a | 931 | *start = pa->start; |
20f878fe | 932 | if (*start < low || *start > limit) { |
a3e37fa7 KZ |
933 | fdisk_warnx(cxt, _("Start sector %ju out of range."), |
934 | (uintmax_t) *start); | |
77d6a70a | 935 | return -ERANGE; |
20f878fe | 936 | } |
77d6a70a KZ |
937 | } else { |
938 | /* ask user by dialog */ | |
939 | struct fdisk_ask *ask = fdisk_new_ask(); | |
940 | int rc; | |
941 | ||
942 | if (!ask) | |
943 | return -ENOMEM; | |
944 | fdisk_ask_set_query(ask, | |
6a632136 | 945 | fdisk_use_cylinders(cxt) ? |
77d6a70a KZ |
946 | _("First cylinder") : _("First sector")); |
947 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_NUMBER); | |
948 | fdisk_ask_number_set_low(ask, fdisk_cround(cxt, low)); | |
949 | fdisk_ask_number_set_default(ask, fdisk_cround(cxt, dflt)); | |
950 | fdisk_ask_number_set_high(ask, fdisk_cround(cxt, limit)); | |
951 | ||
952 | rc = fdisk_do_ask(cxt, ask); | |
953 | *start = fdisk_ask_number_get_result(ask); | |
a3d83488 | 954 | fdisk_unref_ask(ask); |
77d6a70a KZ |
955 | if (rc) |
956 | return rc; | |
6a632136 | 957 | if (fdisk_use_cylinders(cxt)) { |
77d6a70a | 958 | *start = (*start - 1) |
6a632136 | 959 | * fdisk_get_units_per_sector(cxt); |
77d6a70a KZ |
960 | if (*start < low) |
961 | *start = low; | |
962 | } | |
963 | } | |
964 | ||
c3bc7483 | 965 | DBG(LABEL, ul_debug("DOS: start is %ju", (uintmax_t) *start)); |
77d6a70a KZ |
966 | return 0; |
967 | } | |
968 | ||
0073a4cf | 969 | static fdisk_sector_t get_possible_last(struct fdisk_context *cxt, size_t n) |
333c3761 | 970 | { |
0073a4cf | 971 | fdisk_sector_t limit; |
333c3761 KZ |
972 | |
973 | if (n >= 4) { | |
974 | /* logical partitions */ | |
975 | struct fdisk_dos_label *l = self_label(cxt); | |
976 | struct pte *ext_pe = l->ext_offset ? self_pte(cxt, l->ext_index) : NULL; | |
977 | ||
978 | if (!ext_pe) | |
979 | return 0; | |
980 | limit = get_abs_partition_end(ext_pe); | |
981 | } else { | |
982 | /* primary partitions */ | |
983 | if (fdisk_use_cylinders(cxt) || !cxt->total_sectors) | |
984 | limit = cxt->geom.heads * cxt->geom.sectors * cxt->geom.cylinders - 1; | |
985 | else | |
986 | limit = cxt->total_sectors - 1; | |
987 | ||
988 | if (limit > UINT_MAX) | |
989 | limit = UINT_MAX; | |
990 | } | |
991 | ||
992 | DBG(LABEL, ul_debug("DOS: last possible sector for #%zu is %ju", | |
993 | n, (uintmax_t) limit)); | |
994 | return limit; | |
995 | } | |
996 | ||
997 | /* returns last free sector for area addressed by @start, the first[] and | |
998 | * last[] are fill_bounds() results */ | |
0073a4cf KZ |
999 | static fdisk_sector_t get_unused_last(struct fdisk_context *cxt, size_t n, |
1000 | fdisk_sector_t start, | |
1001 | fdisk_sector_t first[], fdisk_sector_t last[]) | |
333c3761 KZ |
1002 | { |
1003 | size_t i; | |
0073a4cf | 1004 | fdisk_sector_t limit = get_possible_last(cxt, n); |
333c3761 KZ |
1005 | |
1006 | for (i = 0; i < cxt->label->nparts_max; i++) { | |
1007 | struct pte *pe = self_pte(cxt, i); | |
1008 | ||
1009 | if (start < pe->offset && limit >= pe->offset) | |
1010 | limit = pe->offset - 1; | |
1011 | if (start < first[i] && limit >= first[i]) | |
1012 | limit = first[i] - 1; | |
1013 | } | |
1014 | ||
1015 | DBG(LABEL, ul_debug("DOS: unused sector for #%zu is %ju", | |
1016 | n, (uintmax_t) limit)); | |
1017 | return limit; | |
1018 | } | |
1019 | ||
77d6a70a KZ |
1020 | static int add_partition(struct fdisk_context *cxt, size_t n, |
1021 | struct fdisk_partition *pa) | |
1022 | { | |
1023 | int sys, read = 0, rc, isrel = 0; | |
e3661531 | 1024 | size_t i; |
fcea064b | 1025 | struct fdisk_dos_label *l = self_label(cxt); |
af0df606 | 1026 | struct dos_partition *p = self_partition(cxt, n); |
1b92d076 | 1027 | struct pte *ext_pe = l->ext_offset ? self_pte(cxt, l->ext_index) : NULL; |
af0df606 | 1028 | |
0073a4cf | 1029 | fdisk_sector_t start, stop = 0, limit, temp, |
e3661531 KZ |
1030 | first[cxt->label->nparts_max], |
1031 | last[cxt->label->nparts_max]; | |
9dea2923 | 1032 | |
88141067 | 1033 | DBG(LABEL, ul_debug("DOS: adding partition %zu", n)); |
9c825fa0 | 1034 | |
a745611d | 1035 | sys = pa && pa->type ? pa->type->code : MBR_LINUX_DATA_PARTITION; |
ed470672 | 1036 | |
d0a870c5 | 1037 | if (is_used_partition(p)) { |
829f4206 | 1038 | fdisk_warnx(cxt, _("Partition %zu is already defined. " |
e39966c6 | 1039 | "Delete it before re-adding it."), |
829f4206 | 1040 | n + 1); |
8254c3a5 | 1041 | return -EINVAL; |
9dea2923 | 1042 | } |
e3661531 | 1043 | fill_bounds(cxt, first, last); |
333c3761 KZ |
1044 | limit = get_possible_last(cxt, n); |
1045 | ||
9dea2923 | 1046 | if (n < 4) { |
aa36c2cf | 1047 | if (cxt->parent && fdisk_is_label(cxt->parent, GPT)) |
433d05ff | 1048 | start = 1; /* Bad boy modifies hybrid MBR */ |
bcdeacd7 | 1049 | else { |
ecf40cda KZ |
1050 | if (cxt->script && pa && fdisk_partition_has_start(pa) |
1051 | && pa->start < cxt->first_lba | |
bcdeacd7 KZ |
1052 | && pa->start >= 1) |
1053 | fdisk_set_first_lba(cxt, 1); | |
1054 | ||
433d05ff | 1055 | start = cxt->first_lba; |
bcdeacd7 | 1056 | } |
433d05ff | 1057 | |
fcea064b | 1058 | if (l->ext_offset) { |
1b92d076 | 1059 | assert(ext_pe); |
fcea064b | 1060 | first[l->ext_index] = l->ext_offset; |
1b92d076 | 1061 | last[l->ext_index] = get_abs_partition_end(ext_pe); |
9dea2923 DB |
1062 | } |
1063 | } else { | |
1b92d076 | 1064 | assert(ext_pe); |
bcdeacd7 | 1065 | |
ecf40cda KZ |
1066 | if (cxt->script && pa && fdisk_partition_has_start(pa) |
1067 | && pa->start >= l->ext_offset | |
bcdeacd7 KZ |
1068 | && pa->start < l->ext_offset + cxt->first_lba) |
1069 | fdisk_set_first_lba(cxt, 1); | |
1070 | ||
1071 | start = l->ext_offset + cxt->first_lba; | |
9dea2923 | 1072 | } |
333c3761 | 1073 | |
6a632136 | 1074 | if (fdisk_use_cylinders(cxt)) |
80063996 | 1075 | for (i = 0; i < cxt->label->nparts_max; i++) { |
77d6a70a | 1076 | first[i] = (fdisk_cround(cxt, first[i]) - 1) |
6a632136 | 1077 | * fdisk_get_units_per_sector(cxt); |
80063996 | 1078 | } |
9dea2923 | 1079 | |
0e07540d KZ |
1080 | /* |
1081 | * Ask for first sector | |
1082 | */ | |
9dea2923 | 1083 | do { |
0073a4cf | 1084 | fdisk_sector_t dflt, aligned; |
9dea2923 DB |
1085 | |
1086 | temp = start; | |
cf3808e4 | 1087 | dflt = start = get_unused_start(cxt, n, start, first, last); |
9dea2923 | 1088 | |
ecf40cda | 1089 | if (n >= 4 && pa && fdisk_partition_has_start(pa) && cxt->script |
bcdeacd7 KZ |
1090 | && cxt->first_lba > 1 |
1091 | && temp == start - cxt->first_lba) { | |
1092 | fdisk_set_first_lba(cxt, 1); | |
1093 | start = pa->start; | |
1094 | } | |
1095 | ||
9dea2923 DB |
1096 | /* the default sector should be aligned and unused */ |
1097 | do { | |
9475cc78 | 1098 | aligned = fdisk_align_lba_in_range(cxt, dflt, dflt, limit); |
cf3808e4 | 1099 | dflt = get_unused_start(cxt, n, aligned, first, last); |
9dea2923 DB |
1100 | } while (dflt != aligned && dflt > aligned && dflt < limit); |
1101 | ||
1102 | if (dflt >= limit) | |
1103 | dflt = start; | |
1104 | if (start > limit) | |
1105 | break; | |
6a632136 | 1106 | if (start >= temp + fdisk_get_units_per_sector(cxt) |
fcea064b | 1107 | && read) { |
ac1a559a | 1108 | fdisk_info(cxt, _("Sector %llu is already allocated."), |
fcea064b | 1109 | temp); |
9dea2923 DB |
1110 | temp = start; |
1111 | read = 0; | |
ecf40cda KZ |
1112 | if (pa && (fdisk_partition_has_start(pa) || |
1113 | pa->start_follow_default)) | |
3186f4a9 | 1114 | break; |
9dea2923 | 1115 | } |
0e07540d | 1116 | |
9dea2923 | 1117 | if (!read && start == temp) { |
77d6a70a | 1118 | rc = get_start_from_user(cxt, &start, temp, dflt, limit, pa); |
0e07540d KZ |
1119 | if (rc) |
1120 | return rc; | |
9dea2923 DB |
1121 | read = 1; |
1122 | } | |
1123 | } while (start != temp || !read); | |
0e07540d | 1124 | |
613596b3 KZ |
1125 | if (n == 4) { |
1126 | /* The first EBR is stored at begin of the extended partition */ | |
1127 | struct pte *pe = self_pte(cxt, n); | |
1128 | pe->offset = l->ext_offset; | |
1129 | ||
1130 | } else if (n > 4) { | |
1131 | /* The second (and another) EBR */ | |
af0df606 | 1132 | struct pte *pe = self_pte(cxt, n); |
9dea2923 | 1133 | |
cf3808e4 | 1134 | pe->offset = start - cxt->first_lba; |
fcea064b | 1135 | if (pe->offset == l->ext_offset) { /* must be corrected */ |
9dea2923 | 1136 | pe->offset++; |
cf3808e4 | 1137 | if (cxt->first_lba == 1) |
9dea2923 DB |
1138 | start++; |
1139 | } | |
1140 | } | |
1141 | ||
333c3761 | 1142 | limit = get_unused_last(cxt, n, start, first, last); |
9dea2923 | 1143 | |
9dea2923 | 1144 | if (start > limit) { |
eed0e7b9 | 1145 | fdisk_warnx(cxt, _("No free sectors available.")); |
8254c3a5 | 1146 | return -ENOSPC; |
9dea2923 | 1147 | } |
77d6a70a KZ |
1148 | |
1149 | /* | |
1150 | * Ask for last sector | |
1151 | */ | |
1152 | if (fdisk_cround(cxt, start) == fdisk_cround(cxt, limit)) | |
1153 | stop = limit; | |
1154 | else if (pa && pa->end_follow_default) | |
9dea2923 | 1155 | stop = limit; |
ecf40cda | 1156 | else if (pa && fdisk_partition_has_size(pa)) { |
bcdeacd7 KZ |
1157 | stop = start + pa->size - 1; |
1158 | isrel = pa->size_explicit ? 0 : 1; | |
9dea2923 | 1159 | } else { |
77d6a70a | 1160 | /* ask user by dialog */ |
0e07540d | 1161 | struct fdisk_ask *ask = fdisk_new_ask(); |
9dea2923 | 1162 | |
77d6a70a KZ |
1163 | if (!ask) |
1164 | return -ENOMEM; | |
0e07540d | 1165 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_OFFSET); |
9dea2923 | 1166 | |
6a632136 | 1167 | if (fdisk_use_cylinders(cxt)) { |
0e07540d KZ |
1168 | fdisk_ask_set_query(ask, _("Last cylinder, +cylinders or +size{K,M,G,T,P}")); |
1169 | fdisk_ask_number_set_unit(ask, | |
1170 | cxt->sector_size * | |
6a632136 | 1171 | fdisk_get_units_per_sector(cxt)); |
0e07540d KZ |
1172 | } else { |
1173 | fdisk_ask_set_query(ask, _("Last sector, +sectors or +size{K,M,G,T,P}")); | |
1174 | fdisk_ask_number_set_unit(ask,cxt->sector_size); | |
1175 | } | |
1176 | ||
77d6a70a KZ |
1177 | fdisk_ask_number_set_low(ask, fdisk_cround(cxt, start)); |
1178 | fdisk_ask_number_set_default(ask, fdisk_cround(cxt, limit)); | |
1179 | fdisk_ask_number_set_high(ask, fdisk_cround(cxt, limit)); | |
1180 | fdisk_ask_number_set_base(ask, fdisk_cround(cxt, start)); /* base for relative input */ | |
0e07540d KZ |
1181 | |
1182 | rc = fdisk_do_ask(cxt, ask); | |
0e07540d | 1183 | stop = fdisk_ask_number_get_result(ask); |
77d6a70a | 1184 | isrel = fdisk_ask_number_is_relative(ask); |
a3d83488 | 1185 | fdisk_unref_ask(ask); |
77d6a70a KZ |
1186 | if (rc) |
1187 | return rc; | |
6a632136 KZ |
1188 | if (fdisk_use_cylinders(cxt)) { |
1189 | stop = stop * fdisk_get_units_per_sector(cxt) - 1; | |
77d6a70a KZ |
1190 | if (stop >limit) |
1191 | stop = limit; | |
a389baf1 | 1192 | } |
77d6a70a KZ |
1193 | } |
1194 | ||
bcdeacd7 KZ |
1195 | DBG(LABEL, ul_debug("DOS: raw stop: %ju", (uintmax_t) stop)); |
1196 | ||
77d6a70a KZ |
1197 | if (stop > limit) |
1198 | stop = limit; | |
1199 | ||
d527d2dd | 1200 | if (isrel && stop - start < (cxt->grain / fdisk_get_sector_size(cxt))) { |
68fe4b28 KZ |
1201 | /* Don't try to be smart on very small partitions and don't |
1202 | * align so small sizes, just follow the resurst */ | |
1203 | isrel = 0; | |
d527d2dd KZ |
1204 | DBG(LABEL, ul_debug("DOS: don't align end os tiny partition [start=%ju, stop=%ju, grain=%ju]", |
1205 | start, stop, cxt->grain)); | |
1206 | } | |
68fe4b28 | 1207 | |
77d6a70a KZ |
1208 | if (stop < limit) { |
1209 | if (isrel && alignment_required(cxt)) { | |
9dea2923 | 1210 | /* the last sector has not been exactly requested (but |
0e07540d KZ |
1211 | * defined by +size{K,M,G} convention), so be smart and |
1212 | * align the end of the partition. The next partition | |
1213 | * will start at phy.block boundary. | |
9dea2923 | 1214 | */ |
1bb387bd KZ |
1215 | stop = fdisk_align_lba_in_range(cxt, stop, start, limit); |
1216 | if (stop > start) | |
1217 | stop -= 1; | |
9dea2923 DB |
1218 | if (stop > limit) |
1219 | stop = limit; | |
1bb387bd | 1220 | DBG(LABEL, ul_debug("DOS: aligned stop: %ju", (uintmax_t) stop)); |
9dea2923 DB |
1221 | } |
1222 | } | |
1223 | ||
ecf40cda | 1224 | set_partition(cxt, n, 0, start, stop, sys, pa && pa->boot == 1 ? 1 : 0); |
af0df606 KZ |
1225 | if (n > 4) { |
1226 | struct pte *pe = self_pte(cxt, n); | |
bb58112e | 1227 | set_partition(cxt, n - 1, 1, pe->offset, stop, |
7bc31ada | 1228 | MBR_DOS_EXTENDED_PARTITION, 0); |
af0df606 | 1229 | } |
9dea2923 | 1230 | |
0ecf3ab5 KZ |
1231 | /* report */ |
1232 | { | |
1233 | struct fdisk_parttype *t = | |
1234 | fdisk_label_get_parttype_from_code(cxt->label, sys); | |
1235 | fdisk_info_new_partition(cxt, n + 1, start, stop, t); | |
dfc6db2a | 1236 | fdisk_unref_parttype(t); |
0ecf3ab5 KZ |
1237 | } |
1238 | ||
1239 | ||
bb58112e | 1240 | if (IS_EXTENDED(sys)) { |
af0df606 | 1241 | struct pte *pen = self_pte(cxt, n); |
9dea2923 | 1242 | |
fcea064b | 1243 | l->ext_index = n; |
613596b3 | 1244 | l->ext_offset = start; |
6864f168 | 1245 | pen->ex_entry = p; |
9dea2923 | 1246 | } |
8254c3a5 | 1247 | |
bddd84e7 | 1248 | fdisk_label_set_changed(cxt->label, 1); |
8254c3a5 | 1249 | return 0; |
9dea2923 DB |
1250 | } |
1251 | ||
c3bc7483 KZ |
1252 | static int add_logical(struct fdisk_context *cxt, |
1253 | struct fdisk_partition *pa, | |
1254 | size_t *partno) | |
9dea2923 | 1255 | { |
613596b3 | 1256 | struct pte *pe; |
28d79d9b | 1257 | int rc; |
af0df606 | 1258 | |
e3661531 | 1259 | assert(cxt); |
c3bc7483 | 1260 | assert(partno); |
e3661531 | 1261 | assert(cxt->label); |
613596b3 | 1262 | assert(self_label(cxt)->ext_offset); |
e3661531 | 1263 | |
613596b3 KZ |
1264 | DBG(LABEL, ul_debug("DOS: nparts max: %zu", cxt->label->nparts_max)); |
1265 | pe = self_pte(cxt, cxt->label->nparts_max); | |
af0df606 | 1266 | |
613596b3 | 1267 | if (!pe->sectorbuffer) { |
af0df606 KZ |
1268 | pe->sectorbuffer = calloc(1, cxt->sector_size); |
1269 | if (!pe->sectorbuffer) | |
1270 | return -ENOMEM; | |
613596b3 KZ |
1271 | DBG(LABEL, ul_debug("DOS: logical: %zu: new EBR sector buffer %p", |
1272 | cxt->label->nparts_max, pe->sectorbuffer)); | |
ddec0e40 | 1273 | pe->private_sectorbuffer = 1; |
9dea2923 | 1274 | } |
613596b3 KZ |
1275 | pe->pt_entry = mbr_get_partition(pe->sectorbuffer, 0); |
1276 | pe->ex_entry = pe->pt_entry + 1; | |
1277 | pe->offset = 0; | |
1278 | partition_set_changed(cxt, cxt->label->nparts_max, 1); | |
1279 | ||
1280 | cxt->label->nparts_max++; | |
1281 | ||
a536cf71 KZ |
1282 | /* this message makes sense only when we use extended/primary/logical |
1283 | * dialog. The dialog is disable for scripts, see dos_add_partition() */ | |
1284 | if (!cxt->script) | |
1285 | fdisk_info(cxt, _("Adding logical partition %zu"), | |
1286 | cxt->label->nparts_max); | |
c3bc7483 | 1287 | *partno = cxt->label->nparts_max - 1; |
28d79d9b KZ |
1288 | rc = add_partition(cxt, *partno, pa); |
1289 | ||
1290 | if (rc) { | |
1291 | /* reset on error */ | |
1292 | cxt->label->nparts_max--; | |
1293 | pe->pt_entry = NULL; | |
1294 | pe->ex_entry = NULL; | |
1295 | pe->offset = 0; | |
1296 | pe->changed = 0; | |
1297 | } | |
1298 | ||
1299 | return rc; | |
9dea2923 DB |
1300 | } |
1301 | ||
e3661531 | 1302 | static void check(struct fdisk_context *cxt, size_t n, |
5dfca634 KZ |
1303 | unsigned int h, unsigned int s, unsigned int c, |
1304 | unsigned int start) | |
1305 | { | |
1306 | unsigned int total, real_s, real_c; | |
1307 | ||
63fb717d KZ |
1308 | if (!is_dos_compatible(cxt)) |
1309 | return; | |
1310 | ||
5dfca634 KZ |
1311 | real_s = sector(s) - 1; |
1312 | real_c = cylinder(s, c); | |
9bb8caff | 1313 | total = (real_c * cxt->geom.heads + h) * cxt->geom.sectors + real_s; |
fcea064b | 1314 | |
5dfca634 | 1315 | if (!total) |
829f4206 | 1316 | fdisk_warnx(cxt, _("Partition %zu: contains sector 0"), n); |
5dfca634 | 1317 | if (h >= cxt->geom.heads) |
829f4206 | 1318 | fdisk_warnx(cxt, _("Partition %zu: head %d greater than " |
fcea064b | 1319 | "maximum %d"), n, h + 1, cxt->geom.heads); |
5dfca634 | 1320 | if (real_s >= cxt->geom.sectors) |
829f4206 | 1321 | fdisk_warnx(cxt, _("Partition %zu: sector %d greater than " |
fcea064b | 1322 | "maximum %llu"), n, s, cxt->geom.sectors); |
5dfca634 | 1323 | if (real_c >= cxt->geom.cylinders) |
829f4206 | 1324 | fdisk_warnx(cxt, _("Partition %zu: cylinder %d greater than " |
fcea064b KZ |
1325 | "maximum %llu"), |
1326 | n, real_c + 1, | |
1327 | cxt->geom.cylinders); | |
1328 | ||
5dfca634 | 1329 | if (cxt->geom.cylinders <= 1024 && start != total) |
829f4206 KZ |
1330 | fdisk_warnx(cxt, _("Partition %zu: previous sectors %u " |
1331 | "disagrees with total %u"), n, start, total); | |
5dfca634 KZ |
1332 | } |
1333 | ||
1334 | /* check_consistency() and long2chs() added Sat Mar 6 12:28:16 1993, | |
1335 | * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross, | |
1336 | * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S. | |
1337 | * Lubkin Oct. 1991). */ | |
1338 | ||
1339 | static void | |
1340 | long2chs(struct fdisk_context *cxt, unsigned long ls, | |
1341 | unsigned int *c, unsigned int *h, unsigned int *s) { | |
1342 | int spc = cxt->geom.heads * cxt->geom.sectors; | |
1343 | ||
1344 | *c = ls / spc; | |
1345 | ls = ls % spc; | |
1346 | *h = ls / cxt->geom.sectors; | |
1347 | *s = ls % cxt->geom.sectors + 1; /* sectors count from 1 */ | |
1348 | } | |
1349 | ||
f540fe15 | 1350 | static void check_consistency(struct fdisk_context *cxt, struct dos_partition *p, |
e3661531 | 1351 | size_t partition) |
5dfca634 KZ |
1352 | { |
1353 | unsigned int pbc, pbh, pbs; /* physical beginning c, h, s */ | |
1354 | unsigned int pec, peh, pes; /* physical ending c, h, s */ | |
1355 | unsigned int lbc, lbh, lbs; /* logical beginning c, h, s */ | |
1356 | unsigned int lec, leh, les; /* logical ending c, h, s */ | |
1357 | ||
1358 | if (!is_dos_compatible(cxt)) | |
1359 | return; | |
1360 | ||
1361 | if (!cxt->geom.heads || !cxt->geom.sectors || (partition >= 4)) | |
1362 | return; /* do not check extended partitions */ | |
1363 | ||
60c1b036 | 1364 | /* physical beginning c, h, s */ |
da967236 KZ |
1365 | pbc = (p->bc & 0xff) | ((p->bs << 2) & 0x300); |
1366 | pbh = p->bh; | |
1367 | pbs = p->bs & 0x3f; | |
5dfca634 | 1368 | |
60c1b036 | 1369 | /* physical ending c, h, s */ |
da967236 KZ |
1370 | pec = (p->ec & 0xff) | ((p->es << 2) & 0x300); |
1371 | peh = p->eh; | |
1372 | pes = p->es & 0x3f; | |
5dfca634 | 1373 | |
60c1b036 | 1374 | /* compute logical beginning (c, h, s) */ |
b44244cb | 1375 | long2chs(cxt, dos_partition_get_start(p), &lbc, &lbh, &lbs); |
5dfca634 | 1376 | |
60c1b036 | 1377 | /* compute logical ending (c, h, s) */ |
b44244cb | 1378 | long2chs(cxt, dos_partition_get_start(p) + dos_partition_get_size(p) - 1, &lec, &leh, &les); |
5dfca634 | 1379 | |
60c1b036 | 1380 | /* Same physical / logical beginning? */ |
fcea064b KZ |
1381 | if (cxt->geom.cylinders <= 1024 |
1382 | && (pbc != lbc || pbh != lbh || pbs != lbs)) { | |
829f4206 | 1383 | fdisk_warnx(cxt, _("Partition %zu: different physical/logical " |
fcea064b KZ |
1384 | "beginnings (non-Linux?): " |
1385 | "phys=(%d, %d, %d), logical=(%d, %d, %d)"), | |
1386 | partition + 1, | |
1387 | pbc, pbh, pbs, | |
1388 | lbc, lbh, lbs); | |
5dfca634 KZ |
1389 | } |
1390 | ||
60c1b036 | 1391 | /* Same physical / logical ending? */ |
fcea064b KZ |
1392 | if (cxt->geom.cylinders <= 1024 |
1393 | && (pec != lec || peh != leh || pes != les)) { | |
829f4206 | 1394 | fdisk_warnx(cxt, _("Partition %zu: different physical/logical " |
fcea064b KZ |
1395 | "endings: phys=(%d, %d, %d), logical=(%d, %d, %d)"), |
1396 | partition + 1, | |
1397 | pec, peh, pes, | |
1398 | lec, leh, les); | |
5dfca634 KZ |
1399 | } |
1400 | ||
60c1b036 | 1401 | /* Ending on cylinder boundary? */ |
5dfca634 | 1402 | if (peh != (cxt->geom.heads - 1) || pes != cxt->geom.sectors) { |
829f4206 | 1403 | fdisk_warnx(cxt, _("Partition %zu: does not end on " |
fcea064b | 1404 | "cylinder boundary."), |
5dfca634 KZ |
1405 | partition + 1); |
1406 | } | |
1407 | } | |
1408 | ||
9ffeb235 | 1409 | static int dos_verify_disklabel(struct fdisk_context *cxt) |
2ca61a61 | 1410 | { |
e3661531 | 1411 | size_t i, j; |
0073a4cf KZ |
1412 | fdisk_sector_t total = 1, n_sectors = cxt->total_sectors; |
1413 | fdisk_sector_t first[cxt->label->nparts_max], | |
1414 | last[cxt->label->nparts_max]; | |
f540fe15 | 1415 | struct dos_partition *p; |
fcea064b | 1416 | struct fdisk_dos_label *l = self_label(cxt); |
2ca61a61 | 1417 | |
aa36c2cf | 1418 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 1419 | |
e3661531 KZ |
1420 | fill_bounds(cxt, first, last); |
1421 | for (i = 0; i < cxt->label->nparts_max; i++) { | |
af0df606 | 1422 | struct pte *pe = self_pte(cxt, i); |
2ca61a61 | 1423 | |
af0df606 | 1424 | p = self_partition(cxt, i); |
d0a870c5 | 1425 | if (is_used_partition(p) && !IS_EXTENDED(p->sys_ind)) { |
2ca61a61 | 1426 | check_consistency(cxt, p, i); |
61eaad50 | 1427 | if (get_abs_partition_start(pe) < first[i]) |
fcea064b | 1428 | fdisk_warnx(cxt, _( |
829f4206 | 1429 | "Partition %zu: bad start-of-data."), |
fcea064b KZ |
1430 | i + 1); |
1431 | ||
1432 | check(cxt, i + 1, p->eh, p->es, p->ec, last[i]); | |
2ca61a61 | 1433 | total += last[i] + 1 - first[i]; |
fcea064b | 1434 | |
11712b66 KZ |
1435 | if (i == 0) |
1436 | total += get_abs_partition_start(pe) - 1; | |
1437 | ||
fcea064b | 1438 | for (j = 0; j < i; j++) { |
2ca61a61 DB |
1439 | if ((first[i] >= first[j] && first[i] <= last[j]) |
1440 | || ((last[i] <= last[j] && last[i] >= first[j]))) { | |
fcea064b | 1441 | |
829f4206 KZ |
1442 | fdisk_warnx(cxt, _("Partition %zu: " |
1443 | "overlaps partition %zu."), | |
fcea064b KZ |
1444 | j + 1, i + 1); |
1445 | ||
2ca61a61 DB |
1446 | total += first[i] >= first[j] ? |
1447 | first[i] : first[j]; | |
1448 | total -= last[i] <= last[j] ? | |
1449 | last[i] : last[j]; | |
1450 | } | |
fcea064b | 1451 | } |
2ca61a61 DB |
1452 | } |
1453 | } | |
1454 | ||
fcea064b | 1455 | if (l->ext_offset) { |
0073a4cf | 1456 | fdisk_sector_t e_last; |
1b92d076 KZ |
1457 | struct pte *ext_pe = self_pte(cxt, l->ext_index); |
1458 | ||
1459 | e_last = get_abs_partition_end(ext_pe); | |
2ca61a61 | 1460 | |
e3661531 | 1461 | for (i = 4; i < cxt->label->nparts_max; i++) { |
2ca61a61 | 1462 | total++; |
af0df606 KZ |
1463 | p = self_partition(cxt, i); |
1464 | ||
2ca61a61 | 1465 | if (!p->sys_ind) { |
e3661531 | 1466 | if (i != 4 || i + 1 < cxt->label->nparts_max) |
fcea064b | 1467 | fdisk_warnx(cxt, |
829f4206 | 1468 | _("Partition %zu: empty."), |
fcea064b KZ |
1469 | i + 1); |
1470 | } else if (first[i] < l->ext_offset | |
1471 | || last[i] > e_last) { | |
1472 | ||
829f4206 KZ |
1473 | fdisk_warnx(cxt, _("Logical partition %zu: " |
1474 | "not entirely in partition %zu."), | |
fcea064b | 1475 | i + 1, l->ext_index + 1); |
2ca61a61 | 1476 | } |
2ca61a61 DB |
1477 | } |
1478 | } | |
1479 | ||
1480 | if (total > n_sectors) | |
fcea064b KZ |
1481 | fdisk_warnx(cxt, _("Total allocated sectors %llu greater " |
1482 | "than the maximum %llu."), total, n_sectors); | |
2ca61a61 | 1483 | else if (total < n_sectors) |
fcea064b | 1484 | fdisk_warnx(cxt, _("Remaining %lld unallocated %ld-byte " |
ac1a559a | 1485 | "sectors."), n_sectors - total, cxt->sector_size); |
2ca61a61 DB |
1486 | |
1487 | return 0; | |
1488 | } | |
1489 | ||
9dea2923 DB |
1490 | /* |
1491 | * Ask the user for new partition type information (logical, extended). | |
0f639e54 DB |
1492 | * This function calls the actual partition adding logic - add_partition. |
1493 | * | |
1494 | * API callback. | |
9dea2923 | 1495 | */ |
77d6a70a | 1496 | static int dos_add_partition(struct fdisk_context *cxt, |
c3bc7483 KZ |
1497 | struct fdisk_partition *pa, |
1498 | size_t *partno) | |
9dea2923 | 1499 | { |
ea987bb5 | 1500 | size_t i, free_primary = 0, free_sectors = 0; |
0073a4cf | 1501 | fdisk_sector_t last = 0, grain; |
e3661531 | 1502 | int rc = 0; |
e77313a6 | 1503 | struct fdisk_dos_label *l; |
1b92d076 | 1504 | struct pte *ext_pe; |
c3bc7483 | 1505 | size_t res; /* partno */ |
9dea2923 | 1506 | |
9ffeb235 KZ |
1507 | assert(cxt); |
1508 | assert(cxt->label); | |
aa36c2cf | 1509 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 1510 | |
c3bc7483 KZ |
1511 | DBG(LABEL, ul_debug("DOS: new partition wanted")); |
1512 | ||
e77313a6 | 1513 | l = self_label(cxt); |
1b92d076 | 1514 | ext_pe = l->ext_offset ? self_pte(cxt, l->ext_index) : NULL; |
a3e37fa7 | 1515 | |
c3bc7483 KZ |
1516 | /* |
1517 | * partition template (@pa) based partitioning | |
1518 | */ | |
1519 | ||
a3e37fa7 | 1520 | /* pa specifies start within extended partition, add logical */ |
ecf40cda | 1521 | if (pa && fdisk_partition_has_start(pa) && ext_pe |
a3e37fa7 | 1522 | && pa->start >= l->ext_offset |
1b92d076 | 1523 | && pa->start <= get_abs_partition_end(ext_pe)) { |
c3bc7483 KZ |
1524 | DBG(LABEL, ul_debug("DOS: pa template %p: add logical", pa)); |
1525 | rc = add_logical(cxt, pa, &res); | |
a3e37fa7 KZ |
1526 | goto done; |
1527 | ||
ea987bb5 KZ |
1528 | /* pa specifies that extended partition is wanted */ |
1529 | } else if (pa && pa->type && pa->type->code == MBR_DOS_EXTENDED_PARTITION) { | |
c3bc7483 | 1530 | DBG(LABEL, ul_debug("DOS: pa template %p: add extened", pa)); |
ea987bb5 KZ |
1531 | if (l->ext_offset) { |
1532 | fdisk_warnx(cxt, _("Extended partition already exists.")); | |
1533 | return -EINVAL; | |
1534 | } | |
44374b10 BE |
1535 | rc = get_partition_unused_primary(cxt, pa, &res); |
1536 | if (rc == 0) { | |
c3bc7483 KZ |
1537 | rc = add_partition(cxt, res, pa); |
1538 | goto done; | |
1539 | } | |
1540 | ||
1541 | /* pa specifies start, but outside extended partition */ | |
ecf40cda | 1542 | } else if (pa && fdisk_partition_has_start(pa) && l->ext_offset) { |
c3bc7483 | 1543 | DBG(LABEL, ul_debug("DOS: pa template %p: add primary", pa)); |
44374b10 BE |
1544 | rc = get_partition_unused_primary(cxt, pa, &res); |
1545 | if (rc == 0) { | |
c3bc7483 | 1546 | rc = add_partition(cxt, res, pa); |
ea987bb5 KZ |
1547 | goto done; |
1548 | } | |
a3e37fa7 | 1549 | } |
20f878fe | 1550 | |
c3bc7483 KZ |
1551 | /* |
1552 | * dialog driven partitioning (it does not mean that @pa template is | |
1553 | * completely ignored!) | |
1554 | */ | |
1555 | ||
ea987bb5 KZ |
1556 | /* check if there is space for primary partition */ |
1557 | grain = cxt->grain > cxt->sector_size ? cxt->grain / cxt->sector_size : 1; | |
1558 | last = cxt->first_lba; | |
1559 | ||
af0df606 KZ |
1560 | for (i = 0; i < 4; i++) { |
1561 | struct dos_partition *p = self_partition(cxt, i); | |
ea987bb5 KZ |
1562 | |
1563 | if (is_used_partition(p)) { | |
0073a4cf | 1564 | fdisk_sector_t start = dos_partition_get_start(p); |
ea987bb5 KZ |
1565 | if (last + grain <= start) |
1566 | free_sectors = 1; | |
1567 | last = start + dos_partition_get_size(p); | |
1568 | } else | |
1569 | free_primary++; | |
af0df606 | 1570 | } |
ea987bb5 KZ |
1571 | if (last + grain < cxt->total_sectors - 1) |
1572 | free_sectors = 1; | |
9dea2923 | 1573 | |
e3661531 | 1574 | if (!free_primary && cxt->label->nparts_max >= MAXIMUM_PARTS) { |
fcea064b KZ |
1575 | fdisk_info(cxt, _("The maximum number of partitions has " |
1576 | "been created.")); | |
8254c3a5 | 1577 | return -EINVAL; |
9dea2923 | 1578 | } |
1bf3a034 | 1579 | rc = 1; |
fcea064b | 1580 | |
ea987bb5 | 1581 | if (!free_primary || !free_sectors) { |
c3bc7483 | 1582 | DBG(LABEL, ul_debug("DOS: primary impossible, add logical")); |
fcea064b | 1583 | if (l->ext_offset) { |
ecf40cda | 1584 | if (!pa || fdisk_partition_has_start(pa)) { |
eed0e7b9 | 1585 | const char *msg; |
c3bc7483 | 1586 | if (!free_primary) |
eed0e7b9 | 1587 | msg = _("All primary partitions are in use."); |
c3bc7483 | 1588 | else if (!free_sectors) |
eed0e7b9 KZ |
1589 | msg = _("All space for primary partitions is in use."); |
1590 | ||
1591 | if (pa && fdisk_partition_has_start(pa)) { | |
1592 | fdisk_warnx(cxt, msg); | |
1593 | return -EINVAL; | |
1594 | } else | |
1595 | fdisk_info(cxt, msg); | |
c3bc7483 KZ |
1596 | } |
1597 | rc = add_logical(cxt, pa, &res); | |
ea987bb5 | 1598 | } else { |
33b981f7 BS |
1599 | /* TRANSLATORS: Try to keep this within 80 characters. */ |
1600 | fdisk_info(cxt, _("To create more partitions, first replace " | |
1601 | "a primary with an extended partition.")); | |
ea987bb5 KZ |
1602 | return -EINVAL; |
1603 | } | |
e3661531 | 1604 | } else if (cxt->label->nparts_max >= MAXIMUM_PARTS) { |
fcea064b KZ |
1605 | fdisk_info(cxt, _("All logical partitions are in use. " |
1606 | "Adding a primary partition.")); | |
44374b10 BE |
1607 | rc = get_partition_unused_primary(cxt, pa, &res); |
1608 | if (rc == 0) | |
c3bc7483 | 1609 | rc = add_partition(cxt, res, pa); |
9dea2923 | 1610 | } else { |
20f878fe KZ |
1611 | char hint[BUFSIZ]; |
1612 | struct fdisk_ask *ask; | |
1613 | int c; | |
1614 | ||
ea987bb5 KZ |
1615 | /* the default layout for scripts is to create primary partitions */ |
1616 | if (cxt->script) { | |
44374b10 BE |
1617 | rc = get_partition_unused_primary(cxt, pa, &res); |
1618 | if (rc == 0) | |
c3bc7483 | 1619 | rc = add_partition(cxt, res, pa); |
ea987bb5 KZ |
1620 | goto done; |
1621 | } | |
1622 | ||
20f878fe KZ |
1623 | ask = fdisk_new_ask(); |
1624 | if (!ask) | |
1625 | return -ENOMEM; | |
1626 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_MENU); | |
1627 | fdisk_ask_set_query(ask, _("Partition type")); | |
1628 | fdisk_ask_menu_set_default(ask, free_primary == 1 | |
1629 | && !l->ext_offset ? 'e' : 'p'); | |
1630 | snprintf(hint, sizeof(hint), | |
1631 | _("%zu primary, %d extended, %zu free"), | |
1632 | 4 - (l->ext_offset ? 1 : 0) - free_primary, | |
1633 | l->ext_offset ? 1 : 0, | |
1634 | free_primary); | |
1635 | ||
1636 | fdisk_ask_menu_add_item(ask, 'p', _("primary"), hint); | |
1637 | if (!l->ext_offset) | |
1638 | fdisk_ask_menu_add_item(ask, 'e', _("extended"), _("container for logical partitions")); | |
1639 | else | |
1640 | fdisk_ask_menu_add_item(ask, 'l', _("logical"), _("numbered from 5")); | |
1641 | ||
1642 | rc = fdisk_do_ask(cxt, ask); | |
bd0d850b KZ |
1643 | if (rc) |
1644 | return rc; | |
20f878fe | 1645 | fdisk_ask_menu_get_result(ask, &c); |
a3d83488 | 1646 | fdisk_unref_ask(ask); |
bd0d850b | 1647 | |
9dea2923 | 1648 | if (c == 'p') { |
44374b10 BE |
1649 | rc = get_partition_unused_primary(cxt, pa, &res); |
1650 | if (rc == 0) | |
c3bc7483 | 1651 | rc = add_partition(cxt, res, pa); |
8254c3a5 | 1652 | goto done; |
fcea064b | 1653 | } else if (c == 'l' && l->ext_offset) { |
c3bc7483 | 1654 | rc = add_logical(cxt, pa, &res); |
8254c3a5 | 1655 | goto done; |
fcea064b | 1656 | } else if (c == 'e' && !l->ext_offset) { |
44374b10 BE |
1657 | rc = get_partition_unused_primary(cxt, pa, &res); |
1658 | if (rc == 0) { | |
ecf40cda | 1659 | struct fdisk_partition *xpa = NULL; |
77d6a70a KZ |
1660 | struct fdisk_parttype *t; |
1661 | ||
a745611d | 1662 | t = fdisk_label_get_parttype_from_code(cxt->label, |
bb58112e | 1663 | MBR_DOS_EXTENDED_PARTITION); |
ecf40cda KZ |
1664 | if (!pa) { |
1665 | pa = xpa = fdisk_new_partition(); | |
1666 | if (!xpa) | |
1667 | return -ENOMEM; | |
1668 | } | |
77d6a70a | 1669 | fdisk_partition_set_type(pa, t); |
c3bc7483 | 1670 | rc = add_partition(cxt, res, pa); |
ecf40cda KZ |
1671 | if (xpa) { |
1672 | fdisk_unref_partition(xpa); | |
1673 | pa = NULL; | |
1674 | } | |
ed470672 | 1675 | } |
8254c3a5 | 1676 | goto done; |
9dea2923 | 1677 | } else |
ac1a559a | 1678 | fdisk_warnx(cxt, _("Invalid partition type `%c'."), c); |
9dea2923 | 1679 | } |
8254c3a5 | 1680 | done: |
c3bc7483 | 1681 | if (rc == 0) { |
e3661531 | 1682 | cxt->label->nparts_cur++; |
44374b10 | 1683 | if (partno) |
c3bc7483 KZ |
1684 | *partno = res; |
1685 | } | |
8254c3a5 | 1686 | return rc; |
9dea2923 | 1687 | } |
0dc13a38 | 1688 | |
0073a4cf | 1689 | static int write_sector(struct fdisk_context *cxt, fdisk_sector_t secno, |
fae7b1bc | 1690 | unsigned char *buf) |
0dc13a38 | 1691 | { |
21770662 KZ |
1692 | int rc; |
1693 | ||
1694 | rc = seek_sector(cxt, secno); | |
1695 | if (rc != 0) { | |
98aeae96 | 1696 | fdisk_warn(cxt, _("Cannot write sector %jd: seek failed"), |
21770662 KZ |
1697 | (uintmax_t) secno); |
1698 | return rc; | |
1699 | } | |
bcddbe96 | 1700 | |
88141067 | 1701 | DBG(LABEL, ul_debug("DOS: writting to sector %ju", (uintmax_t) secno)); |
bcddbe96 | 1702 | |
fae7b1bc DB |
1703 | if (write(cxt->dev_fd, buf, cxt->sector_size) != (ssize_t) cxt->sector_size) |
1704 | return -errno; | |
1705 | return 0; | |
1706 | } | |
1707 | ||
9ffeb235 | 1708 | static int dos_write_disklabel(struct fdisk_context *cxt) |
fae7b1bc | 1709 | { |
8b3d9241 | 1710 | struct fdisk_dos_label *l = self_label(cxt); |
e3661531 | 1711 | size_t i; |
8b3d9241 | 1712 | int rc = 0, mbr_changed = 0; |
0dc13a38 | 1713 | |
9ffeb235 KZ |
1714 | assert(cxt); |
1715 | assert(cxt->label); | |
aa36c2cf | 1716 | assert(fdisk_is_label(cxt, DOS)); |
9ffeb235 | 1717 | |
3d919d95 KZ |
1718 | DBG(LABEL, ul_debug("DOS: write PT requested [label-changed: %d, non-pt-changed: %d]", |
1719 | cxt->label->changed, l->non_pt_changed)); | |
1720 | ||
8b3d9241 KZ |
1721 | mbr_changed = l->non_pt_changed; |
1722 | ||
0dc13a38 | 1723 | /* MBR (primary partitions) */ |
8b3d9241 | 1724 | if (!mbr_changed) { |
af0df606 KZ |
1725 | for (i = 0; i < 4; i++) { |
1726 | struct pte *pe = self_pte(cxt, i); | |
1727 | if (pe->changed) | |
8b3d9241 | 1728 | mbr_changed = 1; |
af0df606 | 1729 | } |
0dc13a38 | 1730 | } |
8b3d9241 | 1731 | if (mbr_changed) { |
3d919d95 | 1732 | DBG(LABEL, ul_debug("DOS: MBR changed, writting")); |
67987b47 | 1733 | mbr_set_magic(cxt->firstsector); |
fae7b1bc DB |
1734 | rc = write_sector(cxt, 0, cxt->firstsector); |
1735 | if (rc) | |
1736 | goto done; | |
0dc13a38 | 1737 | } |
8b3d9241 | 1738 | |
bcddbe96 KZ |
1739 | if (cxt->label->nparts_max <= 4 && l->ext_offset) { |
1740 | /* we have empty extended partition, check if the partition has | |
1741 | * been modified and then cleanup possible remaining EBR */ | |
1742 | struct pte *pe = self_pte(cxt, l->ext_index); | |
1743 | unsigned char empty[512] = { 0 }; | |
0073a4cf | 1744 | fdisk_sector_t off = pe ? get_abs_partition_start(pe) : 0; |
bcddbe96 KZ |
1745 | |
1746 | if (off && pe->changed) { | |
1747 | mbr_set_magic(empty); | |
1748 | write_sector(cxt, off, empty); | |
1749 | } | |
1750 | } | |
1751 | ||
0dc13a38 | 1752 | /* EBR (logical partitions) */ |
e3661531 | 1753 | for (i = 4; i < cxt->label->nparts_max; i++) { |
af0df606 | 1754 | struct pte *pe = self_pte(cxt, i); |
0dc13a38 | 1755 | |
28d79d9b | 1756 | if (!pe->changed || !pe->offset || !pe->sectorbuffer) |
613596b3 KZ |
1757 | continue; |
1758 | ||
613596b3 KZ |
1759 | mbr_set_magic(pe->sectorbuffer); |
1760 | rc = write_sector(cxt, pe->offset, pe->sectorbuffer); | |
1761 | if (rc) | |
1762 | goto done; | |
0dc13a38 | 1763 | } |
fae7b1bc DB |
1764 | |
1765 | done: | |
1766 | return rc; | |
0dc13a38 | 1767 | } |
b8855c86 | 1768 | |
f32a9be4 | 1769 | static int dos_locate_disklabel(struct fdisk_context *cxt, int n, |
9bbcf43f | 1770 | const char **name, uint64_t *offset, size_t *size) |
f32a9be4 KZ |
1771 | { |
1772 | assert(cxt); | |
1773 | ||
1774 | *name = NULL; | |
1775 | *offset = 0; | |
1776 | *size = 0; | |
1777 | ||
1778 | switch (n) { | |
1779 | case 0: | |
1780 | *name = "MBR"; | |
1781 | *offset = 0; | |
1782 | *size = 512; | |
1783 | break; | |
1784 | default: | |
1785 | /* extended partitions */ | |
1786 | if (n - 1 + 4 < cxt->label->nparts_max) { | |
1787 | struct pte *pe = self_pte(cxt, n - 1 + 4); | |
1788 | ||
1789 | assert(pe->private_sectorbuffer); | |
1790 | ||
1791 | *name = "EBR"; | |
9bbcf43f | 1792 | *offset = (uint64_t) pe->offset * cxt->sector_size; |
f32a9be4 KZ |
1793 | *size = 512; |
1794 | } else | |
1795 | return 1; | |
1796 | break; | |
1797 | } | |
1798 | ||
1799 | return 0; | |
1800 | } | |
1801 | ||
dfc96cbf KZ |
1802 | /* |
1803 | * Check whether partition entries are ordered by their starting positions. | |
1804 | * Return 0 if OK. Return i if partition i should have been earlier. | |
1805 | * Two separate checks: primary and logical partitions. | |
1806 | */ | |
e3661531 | 1807 | static int wrong_p_order(struct fdisk_context *cxt, size_t *prev) |
dfc96cbf | 1808 | { |
e3661531 KZ |
1809 | size_t last_p_start_pos = 0, p_start_pos; |
1810 | size_t i, last_i = 0; | |
dfc96cbf | 1811 | |
e3661531 | 1812 | for (i = 0 ; i < cxt->label->nparts_max; i++) { |
af0df606 KZ |
1813 | |
1814 | struct pte *pe = self_pte(cxt, i); | |
1815 | struct dos_partition *p = pe->pt_entry; | |
1816 | ||
dfc96cbf KZ |
1817 | if (i == 4) { |
1818 | last_i = 4; | |
1819 | last_p_start_pos = 0; | |
1820 | } | |
d0a870c5 | 1821 | if (is_used_partition(p)) { |
61eaad50 | 1822 | p_start_pos = get_abs_partition_start(pe); |
dfc96cbf KZ |
1823 | |
1824 | if (last_p_start_pos > p_start_pos) { | |
1825 | if (prev) | |
1826 | *prev = last_i; | |
1827 | return i; | |
1828 | } | |
1829 | ||
1830 | last_p_start_pos = p_start_pos; | |
1831 | last_i = i; | |
1832 | } | |
1833 | } | |
1834 | return 0; | |
1835 | } | |
6d864a49 | 1836 | |
1cf67f1c KZ |
1837 | static int dos_list_disklabel(struct fdisk_context *cxt) |
1838 | { | |
6d864a49 | 1839 | assert(cxt); |
9ffeb235 | 1840 | assert(cxt->label); |
aa36c2cf | 1841 | assert(fdisk_is_label(cxt, DOS)); |
6d864a49 | 1842 | |
6c89f750 | 1843 | return 0; |
262002ee | 1844 | } |
1cf67f1c | 1845 | |
262002ee KZ |
1846 | static int dos_get_partition(struct fdisk_context *cxt, size_t n, |
1847 | struct fdisk_partition *pa) | |
1848 | { | |
1849 | struct dos_partition *p; | |
1850 | struct pte *pe; | |
bd5e8291 | 1851 | struct fdisk_dos_label *lb; |
1cf67f1c | 1852 | |
262002ee KZ |
1853 | assert(cxt); |
1854 | assert(pa); | |
1855 | assert(cxt->label); | |
aa36c2cf | 1856 | assert(fdisk_is_label(cxt, DOS)); |
1cf67f1c | 1857 | |
bd5e8291 | 1858 | lb = self_label(cxt); |
262002ee KZ |
1859 | pe = self_pte(cxt, n); |
1860 | p = pe->pt_entry; | |
1861 | pa->used = !is_cleared_partition(p); | |
1862 | if (!pa->used) | |
1863 | return 0; | |
1cf67f1c | 1864 | |
7f01ec7a | 1865 | pa->type = dos_partition_parttype(cxt, p); |
cb4d6804 | 1866 | pa->boot = p->boot_ind == ACTIVE_FLAG ? 1 : 0; |
77d6a70a | 1867 | pa->start = get_abs_partition_start(pe); |
1b92d076 | 1868 | pa->size = dos_partition_get_size(p); |
e77313a6 | 1869 | pa->container = lb->ext_offset && n == lb->ext_index; |
1cf67f1c | 1870 | |
bd5e8291 KZ |
1871 | if (n >= 4) |
1872 | pa->parent_partno = lb->ext_index; | |
03643931 | 1873 | |
cb4d6804 | 1874 | if (p->boot_ind && asprintf(&pa->attrs, "%02x", p->boot_ind) < 0) |
262002ee | 1875 | return -ENOMEM; |
6d864a49 | 1876 | |
262002ee | 1877 | /* start C/H/S */ |
ecf40cda | 1878 | if (asprintf(&pa->start_chs, "%d/%d/%d", |
262002ee KZ |
1879 | cylinder(p->bs, p->bc), |
1880 | sector(p->bs), | |
1881 | p->bh) < 0) | |
1882 | return -ENOMEM; | |
1cf67f1c | 1883 | |
262002ee | 1884 | /* end C/H/S */ |
ecf40cda | 1885 | if (asprintf(&pa->end_chs, "%d/%d/%d", |
262002ee KZ |
1886 | cylinder(p->es, p->ec), |
1887 | sector(p->es), | |
1888 | p->eh) < 0) | |
1889 | return -ENOMEM; | |
6d864a49 | 1890 | |
262002ee | 1891 | return 0; |
6d864a49 KZ |
1892 | } |
1893 | ||
0ecf3ab5 KZ |
1894 | static int dos_set_partition(struct fdisk_context *cxt, size_t n, |
1895 | struct fdisk_partition *pa) | |
1896 | { | |
333c3761 | 1897 | struct fdisk_dos_label *l; |
0ecf3ab5 KZ |
1898 | struct dos_partition *p; |
1899 | struct pte *pe; | |
0073a4cf | 1900 | fdisk_sector_t start, size; |
0ecf3ab5 KZ |
1901 | |
1902 | assert(cxt); | |
1903 | assert(pa); | |
1904 | assert(cxt->label); | |
1905 | assert(fdisk_is_label(cxt, DOS)); | |
1906 | ||
1907 | if (n >= cxt->label->nparts_max) | |
1908 | return -EINVAL; | |
1909 | ||
1910 | if (pa->type && IS_EXTENDED(pa->type->code)) { | |
1911 | fdisk_warnx(cxt, _("You cannot change a partition into an " | |
1912 | "extended one or vice versa. Delete it first.")); | |
1913 | return -EINVAL; | |
1914 | } | |
1915 | ||
1916 | if (pa->type && !pa->type->code) | |
1917 | fdisk_warnx(cxt, _("Type 0 means free space to many systems. " | |
1918 | "Having partitions of type 0 is probably unwise.")); | |
333c3761 KZ |
1919 | l = self_label(cxt); |
1920 | p = self_partition(cxt, n); | |
1921 | pe = self_pte(cxt, n); | |
150d98ee | 1922 | |
333c3761 KZ |
1923 | FDISK_INIT_UNDEF(start); |
1924 | FDISK_INIT_UNDEF(size); | |
0ecf3ab5 | 1925 | |
333c3761 KZ |
1926 | if (fdisk_partition_has_start(pa)) |
1927 | start = pa->start; | |
1928 | if (fdisk_partition_has_size(pa)) | |
1929 | size = pa->size; | |
150d98ee | 1930 | |
333c3761 | 1931 | if (pa->end_follow_default) { |
0073a4cf | 1932 | fdisk_sector_t first[cxt->label->nparts_max], |
333c3761 KZ |
1933 | last[cxt->label->nparts_max], |
1934 | xlast; | |
1935 | struct pte *ext = l->ext_offset ? self_pte(cxt, l->ext_index) : NULL; | |
1936 | ||
1937 | fill_bounds(cxt, first, last); | |
1938 | ||
1939 | if (ext && l->ext_offset) { | |
1940 | first[l->ext_index] = l->ext_offset; | |
1941 | last[l->ext_index] = get_abs_partition_end(ext); | |
1942 | } | |
1943 | if (FDISK_IS_UNDEF(start)) | |
1944 | start = get_abs_partition_start(pe); | |
1945 | ||
1946 | DBG(LABEL, ul_debug("DOS: #%zu now %ju +%ju sectors", | |
1947 | n, (uintmax_t) start, (uintmax_t) dos_partition_get_size(p))); | |
1948 | ||
1949 | xlast = get_unused_last(cxt, n, start, first, last); | |
1950 | size = xlast ? xlast - start + 1: dos_partition_get_size(p); | |
ecf40cda | 1951 | |
333c3761 KZ |
1952 | DBG(LABEL, ul_debug("DOS: #%zu wanted %ju +%ju sectors", |
1953 | n, (uintmax_t) start, (uintmax_t) size)); | |
1954 | } | |
1955 | ||
1956 | if (!FDISK_IS_UNDEF(start) || !FDISK_IS_UNDEF(size)) { | |
1957 | DBG(LABEL, ul_debug("DOS: resize partition")); | |
150d98ee | 1958 | |
333c3761 KZ |
1959 | if (FDISK_IS_UNDEF(start)) |
1960 | start = get_abs_partition_start(pe); | |
1961 | if (FDISK_IS_UNDEF(size)) | |
1962 | size = dos_partition_get_size(p); | |
0ecf3ab5 | 1963 | |
150d98ee | 1964 | set_partition(cxt, n, 0, start, start + size - 1, |
0ecf3ab5 | 1965 | pa->type ? pa->type->code : p->sys_ind, |
ecf40cda | 1966 | pa->boot == 1); |
150d98ee | 1967 | } else { |
ecf40cda | 1968 | DBG(LABEL, ul_debug("DOS: keep size, modify properties")); |
150d98ee KZ |
1969 | if (pa->type) |
1970 | p->sys_ind = pa->type->code; | |
ecf40cda | 1971 | if (!FDISK_IS_UNDEF(pa->boot)) |
150d98ee KZ |
1972 | p->boot_ind = pa->boot == 1 ? ACTIVE_FLAG : 0; |
1973 | } | |
1974 | ||
0ecf3ab5 KZ |
1975 | partition_set_changed(cxt, n, 1); |
1976 | return 0; | |
1977 | } | |
1978 | ||
a60087aa KZ |
1979 | static void print_chain_of_logicals(struct fdisk_context *cxt) |
1980 | { | |
1981 | size_t i; | |
6c64adee | 1982 | struct fdisk_dos_label *l = self_label(cxt); |
a60087aa KZ |
1983 | |
1984 | fputc('\n', stdout); | |
1985 | ||
1986 | for (i = 4; i < cxt->label->nparts_max; i++) { | |
1987 | struct pte *pe = self_pte(cxt, i); | |
1988 | ||
2248aaf9 | 1989 | fprintf(stderr, "#%02zu EBR [%10ju], " |
6c64adee KZ |
1990 | "data[start=%10ju (%10ju), size=%10ju], " |
1991 | "link[start=%10ju (%10ju), size=%10ju]\n", | |
a60087aa | 1992 | i, (uintmax_t) pe->offset, |
6c64adee | 1993 | /* data */ |
a60087aa | 1994 | (uintmax_t) dos_partition_get_start(pe->pt_entry), |
6c64adee | 1995 | (uintmax_t) get_abs_partition_start(pe), |
a60087aa | 1996 | (uintmax_t) dos_partition_get_size(pe->pt_entry), |
6c64adee | 1997 | /* link */ |
a60087aa | 1998 | (uintmax_t) dos_partition_get_start(pe->ex_entry), |
6c64adee | 1999 | (uintmax_t) l->ext_offset + dos_partition_get_start(pe->ex_entry), |
a60087aa KZ |
2000 | (uintmax_t) dos_partition_get_size(pe->ex_entry)); |
2001 | } | |
2002 | } | |
2003 | ||
c1156d85 KZ |
2004 | static int cmp_ebr_offsets(const void *a, const void *b) |
2005 | { | |
2006 | struct pte *ae = (struct pte *) a, | |
2007 | *be = (struct pte *) b; | |
2008 | ||
99cacc6a | 2009 | if (ae->offset == 0 && be->offset == 0) |
c1156d85 KZ |
2010 | return 0; |
2011 | if (ae->offset == 0) | |
2012 | return 1; | |
2013 | if (be->offset == 0) | |
2014 | return -1; | |
2015 | ||
19ff8ff7 | 2016 | return cmp_numbers(ae->offset, be->offset); |
c1156d85 KZ |
2017 | } |
2018 | ||
dfc96cbf KZ |
2019 | /* |
2020 | * Fix the chain of logicals. | |
dfc96cbf | 2021 | * |
a60087aa KZ |
2022 | * The function does not modify data partitions within EBR tables |
2023 | * (pte->pt_entry). It sorts the chain by EBR offsets and then update links | |
2024 | * (pte->ex_entry) between EBR tables. | |
2025 | * | |
dfc96cbf | 2026 | */ |
e3661531 | 2027 | static void fix_chain_of_logicals(struct fdisk_context *cxt) |
dfc96cbf | 2028 | { |
af0df606 | 2029 | struct fdisk_dos_label *l = self_label(cxt); |
d0bdf184 | 2030 | struct pte *last; |
a60087aa KZ |
2031 | size_t i; |
2032 | ||
a60087aa KZ |
2033 | DBG(LABEL, print_chain_of_logicals(cxt)); |
2034 | ||
c1156d85 KZ |
2035 | /* Sort chain by EBR offsets */ |
2036 | qsort(&l->ptes[4], cxt->label->nparts_max - 4, sizeof(struct pte), | |
2037 | cmp_ebr_offsets); | |
2038 | ||
a60087aa | 2039 | again: |
c1156d85 | 2040 | /* Sort data partitions by start */ |
a60087aa KZ |
2041 | for (i = 4; i < cxt->label->nparts_max - 1; i++) { |
2042 | struct pte *cur = self_pte(cxt, i), | |
2043 | *nxt = self_pte(cxt, i + 1); | |
a60087aa | 2044 | |
c1156d85 KZ |
2045 | if (get_abs_partition_start(cur) > |
2046 | get_abs_partition_start(nxt)) { | |
a60087aa | 2047 | |
c1156d85 | 2048 | struct dos_partition tmp = *cur->pt_entry; |
0073a4cf | 2049 | fdisk_sector_t cur_start = get_abs_partition_start(cur), |
c1156d85 | 2050 | nxt_start = get_abs_partition_start(nxt); |
a60087aa | 2051 | |
c1156d85 KZ |
2052 | /* swap data partitions */ |
2053 | *cur->pt_entry = *nxt->pt_entry; | |
2054 | *nxt->pt_entry = tmp; | |
a60087aa | 2055 | |
c1156d85 KZ |
2056 | /* Recount starts according to EBR offsets, the absolute |
2057 | * address tas to be still the same! */ | |
2058 | dos_partition_set_start(cur->pt_entry, nxt_start - cur->offset); | |
2059 | dos_partition_set_start(nxt->pt_entry, cur_start - nxt->offset); | |
a60087aa | 2060 | |
c1156d85 KZ |
2061 | partition_set_changed(cxt, i, 1); |
2062 | partition_set_changed(cxt, i + 1, 1); | |
2063 | goto again; | |
2064 | } | |
dfc96cbf KZ |
2065 | } |
2066 | ||
c1156d85 | 2067 | /* Update EBR links */ |
a60087aa KZ |
2068 | for (i = 4; i < cxt->label->nparts_max - 1; i++) { |
2069 | struct pte *cur = self_pte(cxt, i), | |
2070 | *nxt = self_pte(cxt, i + 1); | |
2071 | ||
0073a4cf | 2072 | fdisk_sector_t noff = nxt->offset - l->ext_offset, |
a60087aa KZ |
2073 | ooff = dos_partition_get_start(cur->ex_entry); |
2074 | ||
a60087aa KZ |
2075 | if (noff == ooff) |
2076 | continue; | |
2077 | ||
2078 | DBG(LABEL, ul_debug("DOS: fix EBR [%10ju] link %ju -> %ju", | |
2079 | (uintmax_t) cur->offset, | |
2080 | (uintmax_t) ooff, (uintmax_t) noff)); | |
2081 | ||
2082 | set_partition(cxt, i, 1, nxt->offset, | |
7bc31ada KZ |
2083 | get_abs_partition_end(nxt), |
2084 | MBR_DOS_EXTENDED_PARTITION, 0); | |
d0bdf184 | 2085 | } |
6c64adee | 2086 | |
d0bdf184 KZ |
2087 | /* always terminate the chain ! */ |
2088 | last = self_pte(cxt, cxt->label->nparts_max - 1); | |
2089 | if (last) { | |
2090 | clear_partition(last->ex_entry); | |
2091 | partition_set_changed(cxt, cxt->label->nparts_max - 1, 1); | |
a60087aa | 2092 | } |
d0bdf184 | 2093 | |
a60087aa | 2094 | DBG(LABEL, print_chain_of_logicals(cxt)); |
dfc96cbf KZ |
2095 | } |
2096 | ||
dd7ba604 | 2097 | static int dos_reorder(struct fdisk_context *cxt) |
dfc96cbf KZ |
2098 | { |
2099 | struct pte *pei, *pek; | |
e3661531 | 2100 | size_t i,k; |
dfc96cbf | 2101 | |
e3661531 | 2102 | if (!wrong_p_order(cxt, NULL)) { |
fcea064b | 2103 | fdisk_info(cxt, _("Nothing to do. Ordering is correct already.")); |
f8ad3899 | 2104 | return 0; |
dfc96cbf KZ |
2105 | } |
2106 | ||
e3661531 | 2107 | while ((i = wrong_p_order(cxt, &k)) != 0 && i < 4) { |
dfc96cbf KZ |
2108 | /* partition i should have come earlier, move it */ |
2109 | /* We have to move data in the MBR */ | |
f540fe15 | 2110 | struct dos_partition *pi, *pk, *pe, pbuf; |
af0df606 KZ |
2111 | pei = self_pte(cxt, i); |
2112 | pek = self_pte(cxt, k); | |
dfc96cbf | 2113 | |
6864f168 KZ |
2114 | pe = pei->ex_entry; |
2115 | pei->ex_entry = pek->ex_entry; | |
2116 | pek->ex_entry = pe; | |
dfc96cbf | 2117 | |
6864f168 KZ |
2118 | pi = pei->pt_entry; |
2119 | pk = pek->pt_entry; | |
dfc96cbf | 2120 | |
f540fe15 KZ |
2121 | memmove(&pbuf, pi, sizeof(struct dos_partition)); |
2122 | memmove(pi, pk, sizeof(struct dos_partition)); | |
2123 | memmove(pk, &pbuf, sizeof(struct dos_partition)); | |
dfc96cbf | 2124 | |
af0df606 KZ |
2125 | partition_set_changed(cxt, i, 1); |
2126 | partition_set_changed(cxt, k, 1); | |
dfc96cbf KZ |
2127 | } |
2128 | ||
2129 | if (i) | |
e3661531 | 2130 | fix_chain_of_logicals(cxt); |
dfc96cbf | 2131 | |
f61d2632 | 2132 | fdisk_info(cxt, _("Done.")); |
f8ad3899 | 2133 | return 0; |
dfc96cbf | 2134 | } |
6d864a49 | 2135 | |
ecf40cda | 2136 | /* TODO: use fdisk_set_partition() API */ |
829f4206 | 2137 | int fdisk_dos_move_begin(struct fdisk_context *cxt, size_t i) |
71ee484e | 2138 | { |
f8ad3899 KZ |
2139 | struct pte *pe; |
2140 | struct dos_partition *p; | |
71ee484e | 2141 | unsigned int new, free_start, curr_start, last; |
bd0d850b | 2142 | uintmax_t res = 0; |
e3661531 | 2143 | size_t x; |
f8ad3899 | 2144 | int rc; |
71ee484e KZ |
2145 | |
2146 | assert(cxt); | |
aa36c2cf | 2147 | assert(fdisk_is_label(cxt, DOS)); |
71ee484e | 2148 | |
f8ad3899 KZ |
2149 | pe = self_pte(cxt, i); |
2150 | p = pe->pt_entry; | |
2151 | ||
d0a870c5 | 2152 | if (!is_used_partition(p) || IS_EXTENDED (p->sys_ind)) { |
829f4206 | 2153 | fdisk_warnx(cxt, _("Partition %zu: no data area."), i + 1); |
f8ad3899 | 2154 | return 0; |
71ee484e KZ |
2155 | } |
2156 | ||
2157 | /* the default start is at the second sector of the disk or at the | |
2158 | * second sector of the extended partition | |
2159 | */ | |
2160 | free_start = pe->offset ? pe->offset + 1 : 1; | |
2161 | ||
61eaad50 | 2162 | curr_start = get_abs_partition_start(pe); |
71ee484e KZ |
2163 | |
2164 | /* look for a free space before the current start of the partition */ | |
e3661531 | 2165 | for (x = 0; x < cxt->label->nparts_max; x++) { |
71ee484e | 2166 | unsigned int end; |
af0df606 | 2167 | struct pte *prev_pe = self_pte(cxt, x); |
f540fe15 | 2168 | struct dos_partition *prev_p = prev_pe->pt_entry; |
71ee484e KZ |
2169 | |
2170 | if (!prev_p) | |
2171 | continue; | |
af0df606 KZ |
2172 | end = get_abs_partition_start(prev_pe) |
2173 | + dos_partition_get_size(prev_p); | |
71ee484e | 2174 | |
d0a870c5 | 2175 | if (is_used_partition(prev_p) && |
71ee484e KZ |
2176 | end > free_start && end <= curr_start) |
2177 | free_start = end; | |
2178 | } | |
2179 | ||
1b92d076 | 2180 | last = get_abs_partition_end(pe); |
71ee484e | 2181 | |
f8ad3899 KZ |
2182 | rc = fdisk_ask_number(cxt, free_start, curr_start, last, |
2183 | _("New beginning of data"), &res); | |
2184 | if (rc) | |
2185 | return rc; | |
2186 | ||
bd0d850b | 2187 | new = res - pe->offset; |
71ee484e | 2188 | |
b44244cb | 2189 | if (new != dos_partition_get_size(p)) { |
af0df606 KZ |
2190 | unsigned int sects = dos_partition_get_size(p) |
2191 | + dos_partition_get_start(p) - new; | |
2192 | ||
b44244cb KZ |
2193 | dos_partition_set_size(p, sects); |
2194 | dos_partition_set_start(p, new); | |
af0df606 KZ |
2195 | |
2196 | partition_set_changed(cxt, i, 1); | |
71ee484e | 2197 | } |
f8ad3899 KZ |
2198 | |
2199 | return rc; | |
71ee484e | 2200 | } |
6d864a49 | 2201 | |
8c0a7f91 | 2202 | static int dos_partition_is_used( |
47b8e7c0 | 2203 | struct fdisk_context *cxt, |
8c0a7f91 | 2204 | size_t i) |
47b8e7c0 | 2205 | { |
f540fe15 | 2206 | struct dos_partition *p; |
47b8e7c0 KZ |
2207 | |
2208 | assert(cxt); | |
9ffeb235 | 2209 | assert(cxt->label); |
aa36c2cf | 2210 | assert(fdisk_is_label(cxt, DOS)); |
47b8e7c0 | 2211 | |
8c0a7f91 KZ |
2212 | if (i >= cxt->label->nparts_max) |
2213 | return 0; | |
47b8e7c0 | 2214 | |
af0df606 | 2215 | p = self_partition(cxt, i); |
47b8e7c0 | 2216 | |
8c0a7f91 | 2217 | return p && !is_cleared_partition(p); |
47b8e7c0 KZ |
2218 | } |
2219 | ||
fb1caca7 KZ |
2220 | static int dos_toggle_partition_flag( |
2221 | struct fdisk_context *cxt, | |
2222 | size_t i, | |
2223 | unsigned long flag) | |
2224 | { | |
f540fe15 | 2225 | struct dos_partition *p; |
fb1caca7 KZ |
2226 | |
2227 | assert(cxt); | |
2228 | assert(cxt->label); | |
aa36c2cf | 2229 | assert(fdisk_is_label(cxt, DOS)); |
fb1caca7 KZ |
2230 | |
2231 | if (i >= cxt->label->nparts_max) | |
2232 | return -EINVAL; | |
2233 | ||
af0df606 | 2234 | p = self_partition(cxt, i); |
fb1caca7 KZ |
2235 | |
2236 | switch (flag) { | |
2237 | case DOS_FLAG_ACTIVE: | |
2238 | if (IS_EXTENDED(p->sys_ind) && !p->boot_ind) | |
829f4206 KZ |
2239 | fdisk_warnx(cxt, _("Partition %zu: is an extended " |
2240 | "partition."), i + 1); | |
fb1caca7 KZ |
2241 | |
2242 | p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG); | |
af0df606 | 2243 | partition_set_changed(cxt, i, 1); |
0477369a | 2244 | fdisk_info(cxt, p->boot_ind ? |
f736ae51 KZ |
2245 | _("The bootable flag on partition %zu is enabled now.") : |
2246 | _("The bootable flag on partition %zu is disabled now."), | |
2247 | i + 1); | |
fb1caca7 KZ |
2248 | break; |
2249 | default: | |
2250 | return 1; | |
2251 | } | |
2252 | ||
2253 | return 0; | |
2254 | } | |
2255 | ||
bd85d11f | 2256 | static const struct fdisk_field dos_fields[] = |
262002ee KZ |
2257 | { |
2258 | /* basic */ | |
bd85d11f KZ |
2259 | { FDISK_FIELD_DEVICE, N_("Device"), 10, 0 }, |
2260 | { FDISK_FIELD_BOOT, N_("Boot"), 1, 0 }, | |
2261 | { FDISK_FIELD_START, N_("Start"), 5, FDISK_FIELDFL_NUMBER }, | |
2262 | { FDISK_FIELD_END, N_("End"), 5, FDISK_FIELDFL_NUMBER }, | |
2263 | { FDISK_FIELD_SECTORS, N_("Sectors"), 5, FDISK_FIELDFL_NUMBER }, | |
2264 | { FDISK_FIELD_CYLINDERS,N_("Cylinders"), 5, FDISK_FIELDFL_NUMBER }, | |
2265 | { FDISK_FIELD_SIZE, N_("Size"), 5, FDISK_FIELDFL_NUMBER | FDISK_FIELDFL_EYECANDY }, | |
2266 | { FDISK_FIELD_TYPEID, N_("Id"), 2, FDISK_FIELDFL_NUMBER }, | |
2267 | { FDISK_FIELD_TYPE, N_("Type"), 0.1, 0 }, | |
262002ee KZ |
2268 | |
2269 | /* expert mode */ | |
bd85d11f KZ |
2270 | { FDISK_FIELD_SADDR, N_("Start-C/H/S"), 1, FDISK_FIELDFL_NUMBER | FDISK_FIELDFL_DETAIL }, |
2271 | { FDISK_FIELD_EADDR, N_("End-C/H/S"), 1, FDISK_FIELDFL_NUMBER | FDISK_FIELDFL_DETAIL }, | |
2272 | { FDISK_FIELD_ATTR, N_("Attrs"), 2, FDISK_FIELDFL_NUMBER | FDISK_FIELDFL_DETAIL } | |
262002ee KZ |
2273 | |
2274 | }; | |
2275 | ||
0c5d095e | 2276 | static const struct fdisk_label_operations dos_operations = |
b8855c86 | 2277 | { |
0c5d095e KZ |
2278 | .probe = dos_probe_label, |
2279 | .write = dos_write_disklabel, | |
2280 | .verify = dos_verify_disklabel, | |
2281 | .create = dos_create_disklabel, | |
f32a9be4 | 2282 | .locate = dos_locate_disklabel, |
1cf67f1c | 2283 | .list = dos_list_disklabel, |
dd7ba604 | 2284 | .reorder = dos_reorder, |
21fe3dde | 2285 | .get_id = dos_get_disklabel_id, |
35b1f0a4 | 2286 | .set_id = dos_set_disklabel_id, |
1cf67f1c | 2287 | |
262002ee | 2288 | .get_part = dos_get_partition, |
0ecf3ab5 | 2289 | .set_part = dos_set_partition, |
77d6a70a | 2290 | .add_part = dos_add_partition, |
e11c6684 | 2291 | .del_part = dos_delete_partition, |
262002ee | 2292 | |
fb1caca7 | 2293 | .part_toggle_flag = dos_toggle_partition_flag, |
8c0a7f91 | 2294 | .part_is_used = dos_partition_is_used, |
47b8e7c0 | 2295 | |
cf3808e4 | 2296 | .reset_alignment = dos_reset_alignment, |
ddec0e40 KZ |
2297 | |
2298 | .deinit = dos_deinit, | |
b8855c86 | 2299 | }; |
0c5d095e KZ |
2300 | |
2301 | /* | |
2302 | * allocates DOS in-memory stuff | |
2303 | */ | |
2304 | struct fdisk_label *fdisk_new_dos_label(struct fdisk_context *cxt) | |
2305 | { | |
2306 | struct fdisk_label *lb; | |
2307 | struct fdisk_dos_label *dos; | |
2308 | ||
2309 | assert(cxt); | |
2310 | ||
2311 | dos = calloc(1, sizeof(*dos)); | |
2312 | if (!dos) | |
2313 | return NULL; | |
2314 | ||
2315 | /* initialize generic part of the driver */ | |
2316 | lb = (struct fdisk_label *) dos; | |
2317 | lb->name = "dos"; | |
53b422ab | 2318 | lb->id = FDISK_DISKLABEL_DOS; |
0c5d095e KZ |
2319 | lb->op = &dos_operations; |
2320 | lb->parttypes = dos_parttypes; | |
a745611d | 2321 | lb->nparttypes = ARRAY_SIZE(dos_parttypes) - 1; |
bd85d11f KZ |
2322 | lb->fields = dos_fields; |
2323 | lb->nfields = ARRAY_SIZE(dos_fields); | |
0c5d095e KZ |
2324 | |
2325 | return lb; | |
2326 | } | |
852ce62b | 2327 | |
b7d101a2 KZ |
2328 | /** |
2329 | * fdisk_dos_enable_compatible: | |
2330 | * @lb: DOS label (see fdisk_get_label()) | |
2331 | * @enable: 0 or 1 | |
2332 | * | |
2333 | * Enables deprecated DOS compatible mode, in this mode library checks for | |
2334 | * cylinders boundary, cases about CHS addressing and another obscure things. | |
2335 | * | |
2336 | * Returns: 0 on success, <0 on error. | |
852ce62b | 2337 | */ |
852ce62b KZ |
2338 | int fdisk_dos_enable_compatible(struct fdisk_label *lb, int enable) |
2339 | { | |
2340 | struct fdisk_dos_label *dos = (struct fdisk_dos_label *) lb; | |
2341 | ||
2342 | if (!lb) | |
2343 | return -EINVAL; | |
2344 | ||
2345 | dos->compatible = enable; | |
0b52b94c KZ |
2346 | if (enable) |
2347 | lb->flags |= FDISK_LABEL_FL_REQUIRE_GEOMETRY; | |
852ce62b KZ |
2348 | return 0; |
2349 | } | |
2350 | ||
b7d101a2 KZ |
2351 | /** |
2352 | * fdisk_dos_is_compatible: | |
2353 | * @lb: DOS label | |
2354 | * | |
2355 | * Returns: 0 if DOS compatibility disabled, 1 if enabled | |
2356 | */ | |
852ce62b KZ |
2357 | int fdisk_dos_is_compatible(struct fdisk_label *lb) |
2358 | { | |
2359 | return ((struct fdisk_dos_label *) lb)->compatible; | |
2360 | } |