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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 | ||
22 | #define IS_EXTENDED(i) \ | |
23 | ((i) == MBR_DOS_EXTENDED_PARTITION \ | |
24 | || (i) == MBR_W95_EXTENDED_PARTITION \ | |
25 | || (i) == MBR_LINUX_EXTENDED_PARTITION) | |
26 | ||
af0df606 KZ |
27 | /* |
28 | * per partition table entry data | |
29 | * | |
30 | * The four primary partitions have the same sectorbuffer | |
31 | * and have NULL ex_entry. | |
32 | * | |
33 | * Each logical partition table entry has two pointers, one for the | |
34 | * partition and one link to the next one. | |
35 | */ | |
36 | struct pte { | |
37 | struct dos_partition *pt_entry; /* on-disk MBR entry */ | |
38 | struct dos_partition *ex_entry; /* on-disk EBR entry */ | |
af0df606 KZ |
39 | sector_t offset; /* disk sector number */ |
40 | unsigned char *sectorbuffer; /* disk sector contents */ | |
ddec0e40 KZ |
41 | |
42 | unsigned int changed : 1, | |
43 | private_sectorbuffer : 1; | |
af0df606 | 44 | }; |
0c5d095e KZ |
45 | |
46 | /* | |
47 | * in-memory fdisk GPT stuff | |
48 | */ | |
49 | struct fdisk_dos_label { | |
50 | struct fdisk_label head; /* generic part */ | |
852ce62b | 51 | |
af0df606 | 52 | struct pte ptes[MAXIMUM_PARTS]; /* partition */ |
fcea064b KZ |
53 | sector_t ext_offset; |
54 | size_t ext_index; | |
8b3d9241 KZ |
55 | unsigned int compatible : 1, /* is DOS compatible? */ |
56 | non_pt_changed : 1; /* MBR, but no PT changed */ | |
0c5d095e KZ |
57 | }; |
58 | ||
59 | /* | |
60 | * Partition types | |
61 | */ | |
749af4b6 | 62 | static struct fdisk_parttype dos_parttypes[] = { |
50992267 | 63 | #include "pt-mbr-partnames.h" |
749af4b6 KZ |
64 | }; |
65 | ||
9dea2923 | 66 | #define set_hsc(h,s,c,sector) { \ |
24cd580b DB |
67 | s = sector % cxt->geom.sectors + 1; \ |
68 | sector /= cxt->geom.sectors; \ | |
69 | h = sector % cxt->geom.heads; \ | |
70 | sector /= cxt->geom.heads; \ | |
71 | c = sector & 0xff; \ | |
72 | s |= (sector >> 2) & 0xc0; \ | |
9dea2923 DB |
73 | } |
74 | ||
5dfca634 KZ |
75 | |
76 | #define sector(s) ((s) & 0x3f) | |
77 | #define cylinder(s, c) ((c) | (((s) & 0xc0) << 2)) | |
78 | ||
cf3808e4 | 79 | #define alignment_required(_x) ((_x)->grain != (_x)->sector_size) |
9dea2923 | 80 | |
28b85e60 KZ |
81 | #define is_dos_compatible(_x) \ |
82 | (fdisk_is_disklabel(_x, DOS) && \ | |
83 | fdisk_dos_is_compatible(fdisk_context_get_label(_x, NULL))) | |
96f817fb | 84 | |
80063996 | 85 | #define cround(c, n) fdisk_cround(c, n) |
3c88fb56 | 86 | |
af0df606 KZ |
87 | |
88 | static inline struct fdisk_dos_label *self_label(struct fdisk_context *cxt) | |
89 | { | |
90 | assert(cxt); | |
91 | assert(cxt->label); | |
92 | assert(fdisk_is_disklabel(cxt, DOS)); | |
93 | ||
94 | return (struct fdisk_dos_label *) cxt->label; | |
95 | } | |
96 | ||
97 | static inline struct pte *self_pte(struct fdisk_context *cxt, size_t i) | |
98 | { | |
99 | struct fdisk_dos_label *l = self_label(cxt); | |
100 | ||
101 | if (i >= ARRAY_SIZE(l->ptes)) | |
102 | return NULL; | |
103 | ||
104 | return &l->ptes[i]; | |
105 | } | |
106 | ||
107 | static inline struct dos_partition *self_partition( | |
108 | struct fdisk_context *cxt, | |
109 | size_t i) | |
110 | { | |
111 | struct pte *pe = self_pte(cxt, i); | |
112 | return pe ? pe->pt_entry : NULL; | |
113 | } | |
114 | ||
115 | struct dos_partition *fdisk_dos_get_partition( | |
116 | struct fdisk_context *cxt, | |
117 | size_t i) | |
118 | { | |
60c1b036 KZ |
119 | assert(cxt); |
120 | assert(cxt->label); | |
121 | assert(fdisk_is_disklabel(cxt, DOS)); | |
122 | ||
af0df606 KZ |
123 | return self_partition(cxt, i); |
124 | } | |
125 | ||
7f01ec7a KZ |
126 | static struct fdisk_parttype *dos_partition_parttype( |
127 | struct fdisk_context *cxt, | |
128 | struct dos_partition *p) | |
129 | { | |
130 | struct fdisk_parttype *t | |
131 | = fdisk_get_parttype_from_code(cxt, p->sys_ind); | |
132 | return t ? : fdisk_new_unknown_parttype(p->sys_ind, NULL); | |
133 | } | |
134 | ||
af0df606 KZ |
135 | static void partition_set_changed( |
136 | struct fdisk_context *cxt, | |
137 | size_t i, | |
138 | int changed) | |
139 | { | |
140 | struct pte *pe = self_pte(cxt, i); | |
141 | ||
142 | if (!pe) | |
143 | return; | |
144 | ||
bcddbe96 KZ |
145 | DBG(LABEL, dbgprint("DOS: setting %zu partition to %s", i, |
146 | changed ? "changed" : "unchnaged")); | |
9c825fa0 | 147 | |
ddec0e40 | 148 | pe->changed = changed ? 1 : 0; |
af0df606 KZ |
149 | if (changed) |
150 | fdisk_label_set_changed(cxt->label, 1); | |
151 | } | |
152 | ||
61eaad50 KZ |
153 | static sector_t get_abs_partition_start(struct pte *pe) |
154 | { | |
60c1b036 KZ |
155 | assert(pe); |
156 | assert(pe->pt_entry); | |
157 | ||
61eaad50 KZ |
158 | return pe->offset + dos_partition_get_start(pe->pt_entry); |
159 | } | |
160 | ||
d0a870c5 KZ |
161 | /* |
162 | * Linux kernel cares about partition size only. Things like | |
163 | * partition type or so are completely irrelevant -- kzak Nov-2013 | |
164 | */ | |
165 | static int is_used_partition(struct dos_partition *p) | |
166 | { | |
167 | return p && dos_partition_get_size(p) != 0; | |
168 | } | |
169 | ||
a64aa3b8 KZ |
170 | static int is_cleared_partition(struct dos_partition *p) |
171 | { | |
172 | return !(!p || p->boot_ind || p->bh || p->bs || p->bc || | |
173 | p->sys_ind || p->eh || p->es || p->ec || | |
174 | dos_partition_get_start(p) || dos_partition_get_size(p)); | |
175 | } | |
176 | ||
77d6a70a KZ |
177 | static int get_partition_unused_primary(struct fdisk_context *cxt, |
178 | struct fdisk_partition *pa) | |
9dea2923 | 179 | { |
77d6a70a | 180 | size_t org = cxt->label->nparts_max, n; |
1bf3a034 | 181 | int rc; |
9dea2923 | 182 | |
1bf3a034 | 183 | cxt->label->nparts_max = 4; |
6c89f750 | 184 | rc = fdisk_partition_next_partno(pa, cxt, &n); |
77d6a70a | 185 | cxt->label->nparts_max = org; |
1bf3a034 KZ |
186 | |
187 | switch (rc) { | |
188 | case 1: | |
ac1a559a | 189 | fdisk_info(cxt, _("All primary partitions have been defined already.")); |
1bf3a034 KZ |
190 | return -1; |
191 | case 0: | |
192 | return n; | |
193 | default: | |
194 | return rc; | |
9dea2923 | 195 | } |
9dea2923 DB |
196 | } |
197 | ||
c37ebc12 KZ |
198 | static int seek_sector(struct fdisk_context *cxt, sector_t secno) |
199 | { | |
200 | off_t offset = (off_t) secno * cxt->sector_size; | |
201 | ||
202 | return lseek(cxt->dev_fd, offset, SEEK_SET) == (off_t) -1 ? -errno : 0; | |
203 | } | |
204 | ||
205 | static int read_sector(struct fdisk_context *cxt, sector_t secno, | |
206 | unsigned char *buf) | |
207 | { | |
208 | int rc = seek_sector(cxt, secno); | |
209 | ||
210 | if (rc < 0) | |
211 | return rc; | |
212 | ||
213 | return read(cxt->dev_fd, buf, cxt->sector_size) != | |
214 | (ssize_t) cxt->sector_size ? -errno : 0; | |
215 | } | |
9dea2923 | 216 | |
e2ee9178 | 217 | /* Allocate a buffer and read a partition table sector */ |
829f4206 | 218 | static int read_pte(struct fdisk_context *cxt, size_t pno, sector_t offset) |
e2ee9178 | 219 | { |
af0df606 KZ |
220 | unsigned char *buf; |
221 | struct pte *pe = self_pte(cxt, pno); | |
222 | ||
223 | buf = calloc(1, cxt->sector_size); | |
224 | if (!buf) | |
225 | return -ENOMEM; | |
e2ee9178 | 226 | |
829f4206 | 227 | DBG(LABEL, dbgprint("DOS: reading pte %zu sector buffer %p", pno, buf)); |
9c825fa0 | 228 | |
e2ee9178 | 229 | pe->offset = offset; |
af0df606 | 230 | pe->sectorbuffer = buf; |
ddec0e40 | 231 | pe->private_sectorbuffer = 1; |
21770662 KZ |
232 | |
233 | if (read_sector(cxt, offset, pe->sectorbuffer) != 0) | |
fcea064b | 234 | fdisk_warn(cxt, _("Failed to read extended partition table " |
829f4206 | 235 | "(offset=%ju)"), (uintmax_t) offset); |
e2ee9178 | 236 | pe->changed = 0; |
6864f168 | 237 | pe->pt_entry = pe->ex_entry = NULL; |
af0df606 | 238 | return 0; |
e2ee9178 DB |
239 | } |
240 | ||
e2ee9178 | 241 | |
f540fe15 | 242 | static void clear_partition(struct dos_partition *p) |
e2ee9178 DB |
243 | { |
244 | if (!p) | |
245 | return; | |
246 | p->boot_ind = 0; | |
da967236 KZ |
247 | p->bh = 0; |
248 | p->bs = 0; | |
249 | p->bc = 0; | |
e2ee9178 | 250 | p->sys_ind = 0; |
da967236 KZ |
251 | p->eh = 0; |
252 | p->es = 0; | |
253 | p->ec = 0; | |
b44244cb KZ |
254 | dos_partition_set_start(p,0); |
255 | dos_partition_set_size(p,0); | |
e2ee9178 DB |
256 | } |
257 | ||
ddec0e40 | 258 | static void dos_init(struct fdisk_context *cxt) |
e2ee9178 | 259 | { |
fcea064b | 260 | struct fdisk_dos_label *l = self_label(cxt); |
e3661531 | 261 | size_t i; |
e2ee9178 | 262 | |
60c1b036 KZ |
263 | assert(cxt); |
264 | assert(cxt->label); | |
265 | assert(fdisk_is_disklabel(cxt, DOS)); | |
266 | ||
9c825fa0 KZ |
267 | DBG(LABEL, dbgprint("DOS: initialize, first sector buffer %p", cxt->firstsector)); |
268 | ||
e3661531 | 269 | cxt->label->nparts_max = 4; /* default, unlimited number of logical */ |
ddec0e40 | 270 | |
fcea064b KZ |
271 | l->ext_index = 0; |
272 | l->ext_offset = 0; | |
ddec0e40 KZ |
273 | l->non_pt_changed = 0; |
274 | ||
275 | memset(l->ptes, 0, sizeof(l->ptes)); | |
e2ee9178 DB |
276 | |
277 | for (i = 0; i < 4; i++) { | |
af0df606 | 278 | struct pte *pe = self_pte(cxt, i); |
e2ee9178 | 279 | |
e8bf93de | 280 | pe->pt_entry = mbr_get_partition(cxt->firstsector, i); |
6864f168 | 281 | pe->ex_entry = NULL; |
e2ee9178 | 282 | pe->offset = 0; |
67987b47 | 283 | pe->sectorbuffer = cxt->firstsector; |
9c825fa0 | 284 | pe->private_sectorbuffer = 0; |
e2ee9178 DB |
285 | pe->changed = 0; |
286 | } | |
287 | ||
4f79f887 KZ |
288 | if (fdisk_context_listonly(cxt)) |
289 | return; | |
290 | /* | |
291 | * Various warnings... | |
292 | */ | |
293 | if (fdisk_missing_geometry(cxt)) | |
294 | fdisk_warnx(cxt, _("You can set geometry from the extra functions menu.")); | |
295 | ||
296 | if (is_dos_compatible(cxt)) { | |
297 | fdisk_warnx(cxt, _("DOS-compatible mode is deprecated.")); | |
298 | ||
299 | if (cxt->sector_size != cxt->phy_sector_size) | |
300 | fdisk_info(cxt, _( | |
301 | "The device presents a logical sector size that is smaller than " | |
302 | "the physical sector size. Aligning to a physical sector (or optimal " | |
303 | "I/O) size boundary is recommended, or performance may be impacted.")); | |
304 | } | |
305 | ||
306 | if (fdisk_context_use_cylinders(cxt)) | |
307 | fdisk_warnx(cxt, _("Cylinders as display units are deprecated.")); | |
0b52b94c | 308 | |
4f79f887 | 309 | if (cxt->total_sectors > UINT_MAX) { |
ac1a559a KZ |
310 | uint64_t bytes = cxt->total_sectors * cxt->sector_size; |
311 | char *szstr = size_to_human_string(SIZE_SUFFIX_SPACE | |
312 | | SIZE_SUFFIX_3LETTER, bytes); | |
fcea064b | 313 | fdisk_warnx(cxt, |
829f4206 | 314 | _("The size of this disk is %s (%ju bytes). DOS " |
fcea064b | 315 | "partition table format can not be used on drives for " |
829f4206 | 316 | "volumes larger than %ju bytes for %lu-byte " |
fcea064b | 317 | "sectors. Use GUID partition table format (GPT)."), |
829f4206 KZ |
318 | szstr, bytes, |
319 | UINT_MAX * cxt->sector_size, | |
0b52b94c | 320 | cxt->sector_size); |
ac1a559a | 321 | free(szstr); |
0b52b94c | 322 | } |
e2ee9178 DB |
323 | } |
324 | ||
ddec0e40 KZ |
325 | /* callback called by libfdisk */ |
326 | static void dos_deinit(struct fdisk_label *lb) | |
327 | { | |
328 | size_t i; | |
329 | struct fdisk_dos_label *l = (struct fdisk_dos_label *) lb; | |
330 | ||
331 | for (i = 0; i < ARRAY_SIZE(l->ptes); i++) { | |
332 | struct pte *pe = &l->ptes[i]; | |
333 | ||
9c825fa0 KZ |
334 | if (pe->private_sectorbuffer && pe->sectorbuffer) { |
335 | DBG(LABEL, dbgprint("DOS: freeing pte %zu sector buffer %p", | |
336 | i, pe->sectorbuffer)); | |
ddec0e40 | 337 | free(pe->sectorbuffer); |
9c825fa0 | 338 | } |
ddec0e40 | 339 | pe->sectorbuffer = NULL; |
9c825fa0 | 340 | pe->private_sectorbuffer = 0; |
ddec0e40 KZ |
341 | } |
342 | ||
343 | memset(l->ptes, 0, sizeof(l->ptes)); | |
344 | } | |
345 | ||
9ffeb235 | 346 | static int dos_delete_partition(struct fdisk_context *cxt, size_t partnum) |
61c4cb85 | 347 | { |
60c1b036 KZ |
348 | struct fdisk_dos_label *l; |
349 | struct pte *pe; | |
af0df606 KZ |
350 | struct dos_partition *p; |
351 | struct dos_partition *q; | |
352 | ||
60c1b036 KZ |
353 | assert(cxt); |
354 | assert(cxt->label); | |
355 | assert(fdisk_is_disklabel(cxt, DOS)); | |
356 | ||
357 | pe = self_pte(cxt, partnum); | |
af0df606 KZ |
358 | if (!pe) |
359 | return -EINVAL; | |
360 | ||
bcddbe96 KZ |
361 | DBG(LABEL, dbgprint("DOS: delete partiton %zu (max=%zu)", partnum, |
362 | cxt->label->nparts_max)); | |
9c825fa0 | 363 | |
60c1b036 | 364 | l = self_label(cxt); |
af0df606 KZ |
365 | p = pe->pt_entry; |
366 | q = pe->ex_entry; | |
61c4cb85 DB |
367 | |
368 | /* Note that for the fifth partition (partnum == 4) we don't actually | |
369 | decrement partitions. */ | |
61c4cb85 | 370 | if (partnum < 4) { |
9c825fa0 | 371 | DBG(LABEL, dbgprint("--> delete primary")); |
fcea064b | 372 | if (IS_EXTENDED(p->sys_ind) && partnum == l->ext_index) { |
e3661531 | 373 | cxt->label->nparts_max = 4; |
fcea064b KZ |
374 | l->ptes[l->ext_index].ex_entry = NULL; |
375 | l->ext_offset = 0; | |
61c4cb85 | 376 | } |
af0df606 | 377 | partition_set_changed(cxt, partnum, 1); |
61c4cb85 DB |
378 | clear_partition(p); |
379 | } else if (!q->sys_ind && partnum > 4) { | |
9c825fa0 | 380 | DBG(LABEL, dbgprint("--> delete logical [last in the chain]")); |
e3661531 | 381 | --cxt->label->nparts_max; |
61c4cb85 | 382 | --partnum; |
af0df606 KZ |
383 | clear_partition(l->ptes[partnum].ex_entry); |
384 | partition_set_changed(cxt, partnum, 1); | |
61c4cb85 | 385 | } else { |
bcddbe96 | 386 | DBG(LABEL, dbgprint("--> delete logical [move down]")); |
61c4cb85 | 387 | if (partnum > 4) { |
bcddbe96 | 388 | DBG(LABEL, dbgprint(" --> delete %zu logical link", partnum)); |
af0df606 | 389 | p = l->ptes[partnum - 1].ex_entry; |
61c4cb85 | 390 | *p = *q; |
b44244cb KZ |
391 | dos_partition_set_start(p, dos_partition_get_start(q)); |
392 | dos_partition_set_size(p, dos_partition_get_size(q)); | |
af0df606 | 393 | partition_set_changed(cxt, partnum - 1, 1); |
61c4cb85 | 394 | |
bcddbe96 KZ |
395 | } else if (cxt->label->nparts_max > 5) { |
396 | DBG(LABEL, dbgprint(" --> delete first logical link")); | |
397 | pe = &l->ptes[5]; /* second logical */ | |
398 | ||
399 | if (pe->pt_entry) /* prevent SEGFAULT */ | |
af0df606 KZ |
400 | dos_partition_set_start(pe->pt_entry, |
401 | get_abs_partition_start(pe) - | |
fcea064b KZ |
402 | l->ext_offset); |
403 | pe->offset = l->ext_offset; | |
af0df606 | 404 | partition_set_changed(cxt, 5, 1); |
61c4cb85 DB |
405 | } |
406 | ||
e3661531 | 407 | if (cxt->label->nparts_max > 5) { |
bcddbe96 | 408 | DBG(LABEL, dbgprint(" --> move ptes")); |
e3661531 | 409 | cxt->label->nparts_max--; |
9c825fa0 | 410 | if (l->ptes[partnum].private_sectorbuffer) { |
bcddbe96 | 411 | DBG(LABEL, dbgprint(" --> freeing pte %zu sector buffer %p", |
9c825fa0 KZ |
412 | partnum, l->ptes[partnum].sectorbuffer)); |
413 | free(l->ptes[partnum].sectorbuffer); | |
414 | } | |
e3661531 | 415 | while (partnum < cxt->label->nparts_max) { |
bcddbe96 | 416 | DBG(LABEL, dbgprint(" --> moving pte %zu <-- %zu", partnum, partnum + 1)); |
af0df606 | 417 | l->ptes[partnum] = l->ptes[partnum + 1]; |
61c4cb85 DB |
418 | partnum++; |
419 | } | |
9c825fa0 | 420 | memset(&l->ptes[partnum], 0, sizeof(struct pte)); |
bcddbe96 KZ |
421 | } else { |
422 | DBG(LABEL, dbgprint(" --> the only logical: clear only")); | |
af0df606 | 423 | clear_partition(l->ptes[partnum].pt_entry); |
bcddbe96 KZ |
424 | cxt->label->nparts_max--; |
425 | ||
426 | if (partnum == 4) { | |
427 | DBG(LABEL, dbgprint(" --> clear last logical")); | |
428 | if (l->ptes[partnum].private_sectorbuffer) { | |
429 | DBG(LABEL, dbgprint(" --> freeing pte %zu sector buffer %p", | |
430 | partnum, l->ptes[partnum].sectorbuffer)); | |
431 | free(l->ptes[partnum].sectorbuffer); | |
432 | } | |
433 | memset(&l->ptes[partnum], 0, sizeof(struct pte)); | |
434 | partition_set_changed(cxt, l->ext_index, 1); | |
435 | } | |
436 | } | |
61c4cb85 | 437 | } |
1f5eb51b | 438 | |
9ffeb235 | 439 | fdisk_label_set_changed(cxt->label, 1); |
1f5eb51b | 440 | return 0; |
61c4cb85 DB |
441 | } |
442 | ||
829f4206 | 443 | static void read_extended(struct fdisk_context *cxt, size_t ext) |
e2ee9178 | 444 | { |
e3661531 | 445 | size_t i; |
e2ee9178 | 446 | struct pte *pex; |
f540fe15 | 447 | struct dos_partition *p, *q; |
fcea064b | 448 | struct fdisk_dos_label *l = self_label(cxt); |
e2ee9178 | 449 | |
fcea064b | 450 | l->ext_index = ext; |
af0df606 | 451 | pex = self_pte(cxt, ext); |
6864f168 | 452 | pex->ex_entry = pex->pt_entry; |
e2ee9178 | 453 | |
6864f168 | 454 | p = pex->pt_entry; |
b44244cb | 455 | if (!dos_partition_get_start(p)) { |
ac1a559a | 456 | fdisk_warnx(cxt, _("Bad offset in primary extended partition.")); |
e2ee9178 DB |
457 | return; |
458 | } | |
459 | ||
bcddbe96 | 460 | DBG(LABEL, dbgprint("DOS: Reading extended %zu", ext)); |
9c825fa0 | 461 | |
e2ee9178 | 462 | while (IS_EXTENDED (p->sys_ind)) { |
af0df606 | 463 | struct pte *pe = self_pte(cxt, cxt->label->nparts_max); |
e2ee9178 | 464 | |
e3661531 | 465 | if (cxt->label->nparts_max >= MAXIMUM_PARTS) { |
e2ee9178 DB |
466 | /* This is not a Linux restriction, but |
467 | this program uses arrays of size MAXIMUM_PARTS. | |
468 | Do not try to `improve' this test. */ | |
af0df606 KZ |
469 | struct pte *pre = self_pte(cxt, |
470 | cxt->label->nparts_max - 1); | |
fcea064b | 471 | fdisk_warnx(cxt, |
829f4206 | 472 | _("Omitting partitions after #%zu. They will be deleted " |
fcea064b | 473 | "if you save this partition table."), |
e3661531 | 474 | cxt->label->nparts_max); |
fcea064b | 475 | |
6864f168 | 476 | clear_partition(pre->ex_entry); |
af0df606 KZ |
477 | partition_set_changed(cxt, |
478 | cxt->label->nparts_max - 1, 1); | |
e2ee9178 DB |
479 | return; |
480 | } | |
481 | ||
fcea064b KZ |
482 | read_pte(cxt, cxt->label->nparts_max, |
483 | l->ext_offset + dos_partition_get_start(p)); | |
e2ee9178 | 484 | |
fcea064b KZ |
485 | if (!l->ext_offset) |
486 | l->ext_offset = dos_partition_get_start(p); | |
e2ee9178 | 487 | |
e8bf93de | 488 | q = p = mbr_get_partition(pe->sectorbuffer, 0); |
fcea064b | 489 | |
488cc17a KZ |
490 | for (i = 0; i < 4; i++, p++) { |
491 | if (!dos_partition_get_size(p)) | |
492 | continue; | |
493 | ||
e2ee9178 | 494 | if (IS_EXTENDED (p->sys_ind)) { |
6864f168 | 495 | if (pe->ex_entry) |
fcea064b KZ |
496 | fdisk_warnx(cxt, _( |
497 | "Extra link pointer in partition " | |
829f4206 | 498 | "table %zu."), |
fcea064b | 499 | cxt->label->nparts_max + 1); |
e2ee9178 | 500 | else |
6864f168 | 501 | pe->ex_entry = p; |
e2ee9178 | 502 | } else if (p->sys_ind) { |
6864f168 | 503 | if (pe->pt_entry) |
fcea064b KZ |
504 | fdisk_warnx(cxt, _( |
505 | "Ignoring extra data in partition " | |
829f4206 | 506 | "table %zu."), |
fcea064b | 507 | cxt->label->nparts_max + 1); |
e2ee9178 | 508 | else |
6864f168 | 509 | pe->pt_entry = p; |
e2ee9178 DB |
510 | } |
511 | } | |
512 | ||
513 | /* very strange code here... */ | |
6864f168 KZ |
514 | if (!pe->pt_entry) { |
515 | if (q != pe->ex_entry) | |
516 | pe->pt_entry = q; | |
e2ee9178 | 517 | else |
6864f168 | 518 | pe->pt_entry = q + 1; |
e2ee9178 | 519 | } |
6864f168 KZ |
520 | if (!pe->ex_entry) { |
521 | if (q != pe->pt_entry) | |
522 | pe->ex_entry = q; | |
e2ee9178 | 523 | else |
6864f168 | 524 | pe->ex_entry = q + 1; |
e2ee9178 DB |
525 | } |
526 | ||
6864f168 | 527 | p = pe->ex_entry; |
e3661531 | 528 | cxt->label->nparts_cur = ++cxt->label->nparts_max; |
e2ee9178 DB |
529 | } |
530 | ||
531 | /* remove empty links */ | |
532 | remove: | |
af0df606 | 533 | q = self_partition(cxt, 4); |
e3661531 | 534 | for (i = 4; i < cxt->label->nparts_max; i++) { |
af0df606 | 535 | p = self_partition(cxt, i); |
e2ee9178 | 536 | |
af0df606 KZ |
537 | if (!dos_partition_get_size(p) && |
538 | (cxt->label->nparts_max > 5 || q->sys_ind)) { | |
829f4206 | 539 | fdisk_info(cxt, _("omitting empty partition (%zu)"), i+1); |
9ffeb235 | 540 | dos_delete_partition(cxt, i); |
e2ee9178 DB |
541 | goto remove; /* numbering changed */ |
542 | } | |
543 | } | |
544 | } | |
545 | ||
21fe3dde | 546 | static int dos_get_disklabel_id(struct fdisk_context *cxt, char **id) |
e2ee9178 | 547 | { |
21fe3dde KZ |
548 | unsigned int num; |
549 | ||
550 | assert(cxt); | |
551 | assert(id); | |
552 | assert(cxt->label); | |
553 | assert(fdisk_is_disklabel(cxt, DOS)); | |
554 | ||
555 | num = mbr_get_id(cxt->firstsector); | |
556 | if (asprintf(id, "0x%08x", num) > 0) | |
557 | return 0; | |
558 | ||
559 | return -ENOMEM; | |
e2ee9178 DB |
560 | } |
561 | ||
9ffeb235 | 562 | static int dos_create_disklabel(struct fdisk_context *cxt) |
e2ee9178 DB |
563 | { |
564 | unsigned int id; | |
565 | ||
9ffeb235 KZ |
566 | assert(cxt); |
567 | assert(cxt->label); | |
568 | assert(fdisk_is_disklabel(cxt, DOS)); | |
569 | ||
9c825fa0 KZ |
570 | DBG(LABEL, dbgprint("DOS: creating new disklabel")); |
571 | ||
e2ee9178 | 572 | /* random disk signature */ |
c544aa2c | 573 | random_get_bytes(&id, sizeof(id)); |
e2ee9178 | 574 | |
e53ced85 | 575 | dos_init(cxt); |
67987b47 | 576 | fdisk_zeroize_firstsector(cxt); |
bddd84e7 | 577 | fdisk_label_set_changed(cxt->label, 1); |
e2ee9178 DB |
578 | |
579 | /* Generate an MBR ID for this disk */ | |
67987b47 | 580 | mbr_set_id(cxt->firstsector, id); |
e2ee9178 DB |
581 | |
582 | /* Put MBR signature */ | |
67987b47 | 583 | mbr_set_magic(cxt->firstsector); |
ac1a559a KZ |
584 | |
585 | fdisk_sinfo(cxt, FDISK_INFO_SUCCESS, | |
586 | ("Created a new DOS disklabel with disk " | |
587 | "identifier 0x%08x."), id); | |
a71601af | 588 | return 0; |
e2ee9178 DB |
589 | } |
590 | ||
35b1f0a4 | 591 | static int dos_set_disklabel_id(struct fdisk_context *cxt) |
e2ee9178 | 592 | { |
0a49e5d5 KZ |
593 | char *end = NULL, *str = NULL; |
594 | unsigned int id, old; | |
35b1f0a4 | 595 | struct fdisk_dos_label *l; |
0a49e5d5 | 596 | int rc; |
e2ee9178 | 597 | |
35b1f0a4 KZ |
598 | assert(cxt); |
599 | assert(cxt->label); | |
600 | assert(fdisk_is_disklabel(cxt, DOS)); | |
601 | ||
9c825fa0 KZ |
602 | DBG(LABEL, dbgprint("DOS: setting Id")); |
603 | ||
35b1f0a4 | 604 | l = self_label(cxt); |
0a49e5d5 KZ |
605 | old = mbr_get_id(cxt->firstsector); |
606 | rc = fdisk_ask_string(cxt, | |
a0862e26 | 607 | _("Enter the new disk identifier"), &str); |
0a49e5d5 KZ |
608 | if (rc) |
609 | return rc; | |
e2ee9178 | 610 | |
0a49e5d5 KZ |
611 | errno = 0; |
612 | id = strtoul(str, &end, 0); | |
613 | if (errno || str == end || (end && *end)) { | |
614 | fdisk_warnx(cxt, _("Incorrect value.")); | |
615 | return -EINVAL; | |
616 | } | |
e2ee9178 | 617 | |
e2ee9178 | 618 | |
0a49e5d5 | 619 | mbr_set_id(cxt->firstsector, id); |
8b3d9241 | 620 | l->non_pt_changed = 1; |
bddd84e7 | 621 | fdisk_label_set_changed(cxt->label, 1); |
ac1a559a KZ |
622 | |
623 | fdisk_sinfo(cxt, FDISK_INFO_SUCCESS, | |
624 | _("Disk identifier changed from 0x%08x to 0x%08x."), | |
625 | old, id); | |
0a49e5d5 | 626 | return 0; |
e2ee9178 DB |
627 | } |
628 | ||
9a5e29e9 KZ |
629 | static void get_partition_table_geometry(struct fdisk_context *cxt, |
630 | unsigned int *ph, unsigned int *ps) | |
631 | { | |
67987b47 | 632 | unsigned char *bufp = cxt->firstsector; |
f540fe15 | 633 | struct dos_partition *p; |
9a5e29e9 KZ |
634 | int i, h, s, hh, ss; |
635 | int first = 1; | |
636 | int bad = 0; | |
637 | ||
638 | hh = ss = 0; | |
60c1b036 | 639 | for (i = 0; i < 4; i++) { |
e8bf93de | 640 | p = mbr_get_partition(bufp, i); |
9a5e29e9 | 641 | if (p->sys_ind != 0) { |
da967236 KZ |
642 | h = p->eh + 1; |
643 | s = (p->es & 077); | |
9a5e29e9 KZ |
644 | if (first) { |
645 | hh = h; | |
646 | ss = s; | |
647 | first = 0; | |
648 | } else if (hh != h || ss != s) | |
649 | bad = 1; | |
650 | } | |
651 | } | |
652 | ||
653 | if (!first && !bad) { | |
654 | *ph = hh; | |
655 | *ps = ss; | |
656 | } | |
cf3808e4 | 657 | |
fcea064b | 658 | DBG(LABEL, dbgprint("DOS PT geometry: heads=%u, sectors=%u", *ph, *ps)); |
9a5e29e9 KZ |
659 | } |
660 | ||
9ffeb235 | 661 | static int dos_reset_alignment(struct fdisk_context *cxt) |
cf3808e4 | 662 | { |
9ffeb235 KZ |
663 | assert(cxt); |
664 | assert(cxt->label); | |
665 | assert(fdisk_is_disklabel(cxt, DOS)); | |
666 | ||
cf3808e4 | 667 | /* overwrite necessary stuff by DOS deprecated stuff */ |
852ce62b | 668 | if (is_dos_compatible(cxt)) { |
9c825fa0 | 669 | DBG(LABEL, dbgprint("DOS: reseting alignemnt for DOS-comaptiblem PT")); |
cf3808e4 KZ |
670 | if (cxt->geom.sectors) |
671 | cxt->first_lba = cxt->geom.sectors; /* usually 63 */ | |
672 | ||
673 | cxt->grain = cxt->sector_size; /* usually 512 */ | |
674 | } | |
cf3808e4 KZ |
675 | |
676 | return 0; | |
677 | } | |
9a5e29e9 | 678 | |
9ed268d0 KZ |
679 | /* TODO: move to include/pt-dos.h and share with libblkid */ |
680 | #define AIX_MAGIC_STRING "\xC9\xC2\xD4\xC1" | |
681 | #define AIX_MAGIC_STRLEN (sizeof(AIX_MAGIC_STRING) - 1) | |
682 | ||
9ffeb235 | 683 | static int dos_probe_label(struct fdisk_context *cxt) |
e2ee9178 | 684 | { |
e3661531 | 685 | size_t i; |
9a5e29e9 | 686 | unsigned int h = 0, s = 0; |
e2ee9178 | 687 | |
e3661531 KZ |
688 | assert(cxt); |
689 | assert(cxt->label); | |
9ffeb235 | 690 | assert(fdisk_is_disklabel(cxt, DOS)); |
e3661531 | 691 | |
9ed268d0 KZ |
692 | /* ignore disks with AIX magic number */ |
693 | if (memcmp(cxt->firstsector, AIX_MAGIC_STRING, AIX_MAGIC_STRLEN) == 0) | |
694 | return 0; | |
695 | ||
67987b47 | 696 | if (!mbr_is_valid_magic(cxt->firstsector)) |
e2ee9178 DB |
697 | return 0; |
698 | ||
e53ced85 | 699 | dos_init(cxt); |
e2ee9178 | 700 | |
9a5e29e9 KZ |
701 | get_partition_table_geometry(cxt, &h, &s); |
702 | if (h && s) { | |
703 | cxt->geom.heads = h; | |
704 | cxt->geom.sectors = s; | |
705 | } | |
706 | ||
e2ee9178 | 707 | for (i = 0; i < 4; i++) { |
af0df606 | 708 | struct pte *pe = self_pte(cxt, i); |
e2ee9178 | 709 | |
d0a870c5 | 710 | if (is_used_partition(pe->pt_entry)) |
e3661531 KZ |
711 | cxt->label->nparts_cur++; |
712 | ||
6864f168 | 713 | if (IS_EXTENDED (pe->pt_entry->sys_ind)) { |
e3661531 | 714 | if (cxt->label->nparts_max != 4) |
fcea064b | 715 | fdisk_warnx(cxt, _( |
829f4206 | 716 | "Ignoring extra extended partition %zu"), |
fcea064b | 717 | i + 1); |
e2ee9178 | 718 | else |
7737f698 | 719 | read_extended(cxt, i); |
e2ee9178 DB |
720 | } |
721 | } | |
722 | ||
e3661531 | 723 | for (i = 3; i < cxt->label->nparts_max; i++) { |
af0df606 | 724 | struct pte *pe = self_pte(cxt, i); |
bcddbe96 | 725 | struct fdisk_dos_label *l = self_label(cxt); |
e2ee9178 | 726 | |
67188340 | 727 | if (!mbr_is_valid_magic(pe->sectorbuffer)) { |
fcea064b | 728 | fdisk_info(cxt, _( |
bcddbe96 KZ |
729 | "Invalid flag 0x%02x%02x of EBR (for partition %zu) will " |
730 | "be corrected by w(rite)."), | |
6fe71269 KZ |
731 | pe->sectorbuffer[510], |
732 | pe->sectorbuffer[511], | |
733 | i + 1); | |
bcddbe96 KZ |
734 | partition_set_changed(cxt, i, 1); |
735 | ||
736 | /* mark also extended as changed to update the first EBR | |
737 | * in situation that there is no logical partitions at all */ | |
738 | partition_set_changed(cxt, l->ext_index, 1); | |
e2ee9178 DB |
739 | } |
740 | } | |
741 | ||
742 | return 1; | |
743 | } | |
744 | ||
745 | /* | |
746 | * Avoid warning about DOS partitions when no DOS partition was changed. | |
747 | * Here a heuristic "is probably dos partition". | |
748 | * We might also do the opposite and warn in all cases except | |
749 | * for "is probably nondos partition". | |
750 | */ | |
02460b8a | 751 | static int is_dos_partition(int t) |
e2ee9178 DB |
752 | { |
753 | return (t == 1 || t == 4 || t == 6 || | |
754 | t == 0x0b || t == 0x0c || t == 0x0e || | |
755 | t == 0x11 || t == 0x12 || t == 0x14 || t == 0x16 || | |
756 | t == 0x1b || t == 0x1c || t == 0x1e || t == 0x24 || | |
757 | t == 0xc1 || t == 0xc4 || t == 0xc6); | |
758 | } | |
9dea2923 | 759 | |
e53ced85 DB |
760 | static void set_partition(struct fdisk_context *cxt, |
761 | int i, int doext, sector_t start, | |
24def09d | 762 | sector_t stop, int sysid) |
9dea2923 | 763 | { |
af0df606 | 764 | struct pte *pe = self_pte(cxt, i); |
f540fe15 | 765 | struct dos_partition *p; |
24def09d | 766 | sector_t offset; |
9dea2923 | 767 | |
80063996 KZ |
768 | DBG(LABEL, dbgprint("DOS: setting partition %d%s, start=%zu, stop=%zu, sysid=%02x", |
769 | i, doext ? " [extended]" : "", | |
770 | (size_t) start, (size_t) stop, sysid)); | |
771 | ||
9dea2923 | 772 | if (doext) { |
fcea064b | 773 | struct fdisk_dos_label *l = self_label(cxt); |
af0df606 | 774 | p = pe->ex_entry; |
fcea064b | 775 | offset = l->ext_offset; |
9dea2923 | 776 | } else { |
af0df606 KZ |
777 | p = pe->pt_entry; |
778 | offset = pe->offset; | |
9dea2923 DB |
779 | } |
780 | p->boot_ind = 0; | |
781 | p->sys_ind = sysid; | |
b44244cb KZ |
782 | dos_partition_set_start(p, start - offset); |
783 | dos_partition_set_size(p, stop - start + 1); | |
9dea2923 | 784 | |
b4bfbadd KZ |
785 | if (!doext) { |
786 | struct fdisk_parttype *t = fdisk_get_parttype_from_code(cxt, sysid); | |
787 | fdisk_info_new_partition(cxt, i + 1, start, stop, t); | |
788 | } | |
852ce62b | 789 | if (is_dos_compatible(cxt) && (start/(cxt->geom.sectors*cxt->geom.heads) > 1023)) |
24cd580b | 790 | start = cxt->geom.heads*cxt->geom.sectors*1024 - 1; |
da967236 | 791 | set_hsc(p->bh, p->bs, p->bc, start); |
852ce62b | 792 | if (is_dos_compatible(cxt) && (stop/(cxt->geom.sectors*cxt->geom.heads) > 1023)) |
24cd580b | 793 | stop = cxt->geom.heads*cxt->geom.sectors*1024 - 1; |
da967236 | 794 | set_hsc(p->eh, p->es, p->ec, stop); |
af0df606 | 795 | partition_set_changed(cxt, i, 1); |
9dea2923 DB |
796 | } |
797 | ||
cf3808e4 KZ |
798 | static sector_t get_unused_start(struct fdisk_context *cxt, |
799 | int part_n, sector_t start, | |
24def09d | 800 | sector_t first[], sector_t last[]) |
9dea2923 | 801 | { |
e3661531 | 802 | size_t i; |
9dea2923 | 803 | |
e3661531 | 804 | for (i = 0; i < cxt->label->nparts_max; i++) { |
24def09d | 805 | sector_t lastplusoff; |
af0df606 | 806 | struct pte *pe = self_pte(cxt, i); |
9dea2923 | 807 | |
af0df606 | 808 | if (start == pe->offset) |
cf3808e4 KZ |
809 | start += cxt->first_lba; |
810 | lastplusoff = last[i] + ((part_n < 4) ? 0 : cxt->first_lba); | |
9dea2923 DB |
811 | if (start >= first[i] && start <= lastplusoff) |
812 | start = lastplusoff + 1; | |
813 | } | |
814 | ||
815 | return start; | |
816 | } | |
817 | ||
e3661531 KZ |
818 | static void fill_bounds(struct fdisk_context *cxt, |
819 | sector_t *first, sector_t *last) | |
cc0c4e56 | 820 | { |
e3661531 | 821 | size_t i; |
af0df606 | 822 | struct pte *pe = self_pte(cxt, 0); |
f540fe15 | 823 | struct dos_partition *p; |
cc0c4e56 | 824 | |
e3661531 | 825 | for (i = 0; i < cxt->label->nparts_max; pe++,i++) { |
6864f168 | 826 | p = pe->pt_entry; |
d0a870c5 | 827 | if (is_cleared_partition(p) || IS_EXTENDED (p->sys_ind)) { |
cc0c4e56 KZ |
828 | first[i] = 0xffffffff; |
829 | last[i] = 0; | |
830 | } else { | |
61eaad50 | 831 | first[i] = get_abs_partition_start(pe); |
b44244cb | 832 | last[i] = first[i] + dos_partition_get_size(p) - 1; |
cc0c4e56 KZ |
833 | } |
834 | } | |
835 | } | |
836 | ||
77d6a70a KZ |
837 | static int get_start_from_user( struct fdisk_context *cxt, |
838 | sector_t *start, | |
839 | sector_t low, | |
840 | sector_t dflt, | |
841 | sector_t limit, | |
842 | struct fdisk_partition *pa) | |
9dea2923 | 843 | { |
77d6a70a KZ |
844 | assert(start); |
845 | ||
846 | /* try to use tepmlate from 'pa' */ | |
847 | if (pa && pa->start_follow_default) | |
848 | *start = dflt; | |
849 | ||
850 | else if (pa && pa->start) { | |
20f878fe KZ |
851 | DBG(LABEL, dbgprint("DOS: start: wanted=%ju, low=%ju, limit=%ju", |
852 | (uintmax_t) pa->start, (uintmax_t) low, (uintmax_t) limit)); | |
77d6a70a | 853 | *start = pa->start; |
20f878fe | 854 | if (*start < low || *start > limit) { |
a3e37fa7 KZ |
855 | fdisk_warnx(cxt, _("Start sector %ju out of range."), |
856 | (uintmax_t) *start); | |
77d6a70a | 857 | return -ERANGE; |
20f878fe | 858 | } |
77d6a70a KZ |
859 | } else { |
860 | /* ask user by dialog */ | |
861 | struct fdisk_ask *ask = fdisk_new_ask(); | |
862 | int rc; | |
863 | ||
864 | if (!ask) | |
865 | return -ENOMEM; | |
866 | fdisk_ask_set_query(ask, | |
867 | fdisk_context_use_cylinders(cxt) ? | |
868 | _("First cylinder") : _("First sector")); | |
869 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_NUMBER); | |
870 | fdisk_ask_number_set_low(ask, fdisk_cround(cxt, low)); | |
871 | fdisk_ask_number_set_default(ask, fdisk_cround(cxt, dflt)); | |
872 | fdisk_ask_number_set_high(ask, fdisk_cround(cxt, limit)); | |
873 | ||
874 | rc = fdisk_do_ask(cxt, ask); | |
875 | *start = fdisk_ask_number_get_result(ask); | |
876 | fdisk_free_ask(ask); | |
877 | if (rc) | |
878 | return rc; | |
879 | if (fdisk_context_use_cylinders(cxt)) { | |
880 | *start = (*start - 1) | |
881 | * fdisk_context_get_units_per_sector(cxt); | |
882 | if (*start < low) | |
883 | *start = low; | |
884 | } | |
885 | } | |
886 | ||
887 | return 0; | |
888 | } | |
889 | ||
890 | static int add_partition(struct fdisk_context *cxt, size_t n, | |
891 | struct fdisk_partition *pa) | |
892 | { | |
893 | int sys, read = 0, rc, isrel = 0; | |
e3661531 | 894 | size_t i; |
fcea064b | 895 | struct fdisk_dos_label *l = self_label(cxt); |
af0df606 | 896 | struct dos_partition *p = self_partition(cxt, n); |
fcea064b | 897 | struct dos_partition *q = self_partition(cxt, l->ext_index); |
af0df606 | 898 | |
24def09d | 899 | sector_t start, stop = 0, limit, temp, |
e3661531 KZ |
900 | first[cxt->label->nparts_max], |
901 | last[cxt->label->nparts_max]; | |
9dea2923 | 902 | |
829f4206 | 903 | DBG(LABEL, dbgprint("DOS: adding partition %zu", n)); |
9c825fa0 | 904 | |
20f878fe | 905 | sys = pa && pa->type ? pa->type->type : MBR_LINUX_DATA_PARTITION; |
ed470672 | 906 | |
d0a870c5 | 907 | if (is_used_partition(p)) { |
829f4206 | 908 | fdisk_warnx(cxt, _("Partition %zu is already defined. " |
e39966c6 | 909 | "Delete it before re-adding it."), |
829f4206 | 910 | n + 1); |
8254c3a5 | 911 | return -EINVAL; |
9dea2923 | 912 | } |
e3661531 | 913 | fill_bounds(cxt, first, last); |
9dea2923 | 914 | if (n < 4) { |
433d05ff KZ |
915 | if (cxt->parent && fdisk_is_disklabel(cxt->parent, GPT)) |
916 | start = 1; /* Bad boy modifies hybrid MBR */ | |
917 | else | |
918 | start = cxt->first_lba; | |
919 | ||
ec10aa67 | 920 | if (fdisk_context_use_cylinders(cxt) || !cxt->total_sectors) |
24cd580b | 921 | limit = cxt->geom.heads * cxt->geom.sectors * cxt->geom.cylinders - 1; |
9dea2923 | 922 | else |
618882d6 | 923 | limit = cxt->total_sectors - 1; |
9dea2923 DB |
924 | |
925 | if (limit > UINT_MAX) | |
926 | limit = UINT_MAX; | |
927 | ||
fcea064b KZ |
928 | if (l->ext_offset) { |
929 | first[l->ext_index] = l->ext_offset; | |
930 | last[l->ext_index] = dos_partition_get_start(q) + | |
b44244cb | 931 | dos_partition_get_size(q) - 1; |
9dea2923 DB |
932 | } |
933 | } else { | |
fcea064b KZ |
934 | start = l->ext_offset + cxt->first_lba; |
935 | limit = dos_partition_get_start(q) | |
936 | + dos_partition_get_size(q) - 1; | |
9dea2923 | 937 | } |
ec10aa67 | 938 | if (fdisk_context_use_cylinders(cxt)) |
80063996 | 939 | for (i = 0; i < cxt->label->nparts_max; i++) { |
77d6a70a | 940 | first[i] = (fdisk_cround(cxt, first[i]) - 1) |
fcea064b | 941 | * fdisk_context_get_units_per_sector(cxt); |
80063996 | 942 | } |
9dea2923 | 943 | |
0e07540d KZ |
944 | /* |
945 | * Ask for first sector | |
946 | */ | |
9dea2923 | 947 | do { |
24def09d | 948 | sector_t dflt, aligned; |
9dea2923 DB |
949 | |
950 | temp = start; | |
cf3808e4 | 951 | dflt = start = get_unused_start(cxt, n, start, first, last); |
9dea2923 DB |
952 | |
953 | /* the default sector should be aligned and unused */ | |
954 | do { | |
9475cc78 | 955 | aligned = fdisk_align_lba_in_range(cxt, dflt, dflt, limit); |
cf3808e4 | 956 | dflt = get_unused_start(cxt, n, aligned, first, last); |
9dea2923 DB |
957 | } while (dflt != aligned && dflt > aligned && dflt < limit); |
958 | ||
959 | if (dflt >= limit) | |
960 | dflt = start; | |
961 | if (start > limit) | |
962 | break; | |
fcea064b KZ |
963 | if (start >= temp + fdisk_context_get_units_per_sector(cxt) |
964 | && read) { | |
ac1a559a | 965 | fdisk_info(cxt, _("Sector %llu is already allocated."), |
fcea064b | 966 | temp); |
9dea2923 DB |
967 | temp = start; |
968 | read = 0; | |
969 | } | |
0e07540d | 970 | |
9dea2923 | 971 | if (!read && start == temp) { |
77d6a70a | 972 | rc = get_start_from_user(cxt, &start, temp, dflt, limit, pa); |
0e07540d KZ |
973 | if (rc) |
974 | return rc; | |
9dea2923 DB |
975 | read = 1; |
976 | } | |
977 | } while (start != temp || !read); | |
0e07540d | 978 | |
9dea2923 | 979 | if (n > 4) { /* NOT for fifth partition */ |
af0df606 | 980 | struct pte *pe = self_pte(cxt, n); |
9dea2923 | 981 | |
cf3808e4 | 982 | pe->offset = start - cxt->first_lba; |
fcea064b | 983 | if (pe->offset == l->ext_offset) { /* must be corrected */ |
9dea2923 | 984 | pe->offset++; |
cf3808e4 | 985 | if (cxt->first_lba == 1) |
9dea2923 DB |
986 | start++; |
987 | } | |
988 | } | |
989 | ||
e3661531 | 990 | for (i = 0; i < cxt->label->nparts_max; i++) { |
af0df606 | 991 | struct pte *pe = self_pte(cxt, i); |
9dea2923 DB |
992 | |
993 | if (start < pe->offset && limit >= pe->offset) | |
994 | limit = pe->offset - 1; | |
995 | if (start < first[i] && limit >= first[i]) | |
996 | limit = first[i] - 1; | |
997 | } | |
998 | if (start > limit) { | |
ac1a559a | 999 | fdisk_info(cxt, _("No free sectors available.")); |
9dea2923 | 1000 | if (n > 4) |
e3661531 | 1001 | cxt->label->nparts_max--; |
8254c3a5 | 1002 | return -ENOSPC; |
9dea2923 | 1003 | } |
77d6a70a KZ |
1004 | |
1005 | /* | |
1006 | * Ask for last sector | |
1007 | */ | |
1008 | if (fdisk_cround(cxt, start) == fdisk_cround(cxt, limit)) | |
1009 | stop = limit; | |
1010 | else if (pa && pa->end_follow_default) | |
9dea2923 | 1011 | stop = limit; |
77d6a70a KZ |
1012 | else if (pa && pa->size) { |
1013 | stop = start + pa->size; | |
77d6a70a | 1014 | isrel = 1; |
9dea2923 | 1015 | } else { |
77d6a70a | 1016 | /* ask user by dialog */ |
0e07540d | 1017 | struct fdisk_ask *ask = fdisk_new_ask(); |
9dea2923 | 1018 | |
77d6a70a KZ |
1019 | if (!ask) |
1020 | return -ENOMEM; | |
0e07540d | 1021 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_OFFSET); |
9dea2923 | 1022 | |
ec10aa67 | 1023 | if (fdisk_context_use_cylinders(cxt)) { |
0e07540d KZ |
1024 | fdisk_ask_set_query(ask, _("Last cylinder, +cylinders or +size{K,M,G,T,P}")); |
1025 | fdisk_ask_number_set_unit(ask, | |
1026 | cxt->sector_size * | |
1027 | fdisk_context_get_units_per_sector(cxt)); | |
1028 | } else { | |
1029 | fdisk_ask_set_query(ask, _("Last sector, +sectors or +size{K,M,G,T,P}")); | |
1030 | fdisk_ask_number_set_unit(ask,cxt->sector_size); | |
1031 | } | |
1032 | ||
77d6a70a KZ |
1033 | fdisk_ask_number_set_low(ask, fdisk_cround(cxt, start)); |
1034 | fdisk_ask_number_set_default(ask, fdisk_cround(cxt, limit)); | |
1035 | fdisk_ask_number_set_high(ask, fdisk_cround(cxt, limit)); | |
1036 | fdisk_ask_number_set_base(ask, fdisk_cround(cxt, start)); /* base for relative input */ | |
0e07540d KZ |
1037 | |
1038 | rc = fdisk_do_ask(cxt, ask); | |
0e07540d | 1039 | stop = fdisk_ask_number_get_result(ask); |
77d6a70a KZ |
1040 | isrel = fdisk_ask_number_is_relative(ask); |
1041 | fdisk_free_ask(ask); | |
1042 | if (rc) | |
1043 | return rc; | |
80063996 KZ |
1044 | if (fdisk_context_use_cylinders(cxt)) { |
1045 | stop = stop * fdisk_context_get_units_per_sector(cxt) - 1; | |
77d6a70a KZ |
1046 | if (stop >limit) |
1047 | stop = limit; | |
80063996 | 1048 | } |
77d6a70a KZ |
1049 | } |
1050 | ||
1051 | if (stop > limit) | |
1052 | stop = limit; | |
1053 | ||
1054 | if (stop < limit) { | |
1055 | if (isrel && alignment_required(cxt)) { | |
9dea2923 | 1056 | /* the last sector has not been exactly requested (but |
0e07540d KZ |
1057 | * defined by +size{K,M,G} convention), so be smart and |
1058 | * align the end of the partition. The next partition | |
1059 | * will start at phy.block boundary. | |
9dea2923 | 1060 | */ |
9475cc78 | 1061 | stop = fdisk_align_lba_in_range(cxt, stop, start, limit) - 1; |
9dea2923 DB |
1062 | if (stop > limit) |
1063 | stop = limit; | |
1064 | } | |
1065 | } | |
1066 | ||
e53ced85 | 1067 | set_partition(cxt, n, 0, start, stop, sys); |
af0df606 KZ |
1068 | if (n > 4) { |
1069 | struct pte *pe = self_pte(cxt, n); | |
bb58112e KZ |
1070 | set_partition(cxt, n - 1, 1, pe->offset, stop, |
1071 | MBR_DOS_EXTENDED_PARTITION); | |
af0df606 | 1072 | } |
9dea2923 | 1073 | |
bb58112e | 1074 | if (IS_EXTENDED(sys)) { |
af0df606 KZ |
1075 | struct pte *pe4 = self_pte(cxt, 4); |
1076 | struct pte *pen = self_pte(cxt, n); | |
9dea2923 | 1077 | |
fcea064b | 1078 | l->ext_index = n; |
6864f168 | 1079 | pen->ex_entry = p; |
fcea064b | 1080 | pe4->offset = l->ext_offset = start; |
ddec0e40 KZ |
1081 | pe4->sectorbuffer = calloc(1, cxt->sector_size); |
1082 | if (!pe4->sectorbuffer) | |
1083 | return -ENOMEM; | |
9c825fa0 | 1084 | DBG(LABEL, dbgprint("DOS: add partition, sector buffer %p", pe4->sectorbuffer)); |
ddec0e40 | 1085 | pe4->private_sectorbuffer = 1; |
e8bf93de | 1086 | pe4->pt_entry = mbr_get_partition(pe4->sectorbuffer, 0); |
6864f168 | 1087 | pe4->ex_entry = pe4->pt_entry + 1; |
af0df606 KZ |
1088 | |
1089 | partition_set_changed(cxt, 4, 1); | |
e3661531 | 1090 | cxt->label->nparts_max = 5; |
9dea2923 | 1091 | } |
8254c3a5 | 1092 | |
bddd84e7 | 1093 | fdisk_label_set_changed(cxt->label, 1); |
8254c3a5 | 1094 | return 0; |
9dea2923 DB |
1095 | } |
1096 | ||
77d6a70a | 1097 | static int add_logical(struct fdisk_context *cxt, struct fdisk_partition *pa) |
9dea2923 | 1098 | { |
af0df606 KZ |
1099 | struct dos_partition *p4 = self_partition(cxt, 4); |
1100 | ||
e3661531 KZ |
1101 | assert(cxt); |
1102 | assert(cxt->label); | |
1103 | ||
d0a870c5 | 1104 | if (cxt->label->nparts_max > 5 || !is_cleared_partition(p4)) { |
af0df606 KZ |
1105 | struct pte *pe = self_pte(cxt, cxt->label->nparts_max); |
1106 | ||
1107 | pe->sectorbuffer = calloc(1, cxt->sector_size); | |
1108 | if (!pe->sectorbuffer) | |
1109 | return -ENOMEM; | |
9c825fa0 | 1110 | DBG(LABEL, dbgprint("DOS: add logical, sector buffer %p", pe->sectorbuffer)); |
ddec0e40 | 1111 | pe->private_sectorbuffer = 1; |
e8bf93de | 1112 | pe->pt_entry = mbr_get_partition(pe->sectorbuffer, 0); |
6864f168 | 1113 | pe->ex_entry = pe->pt_entry + 1; |
9dea2923 | 1114 | pe->offset = 0; |
af0df606 KZ |
1115 | |
1116 | partition_set_changed(cxt, cxt->label->nparts_max, 1); | |
e3661531 | 1117 | cxt->label->nparts_max++; |
9dea2923 | 1118 | } |
829f4206 | 1119 | fdisk_info(cxt, _("Adding logical partition %zu"), |
fcea064b | 1120 | cxt->label->nparts_max); |
77d6a70a | 1121 | return add_partition(cxt, cxt->label->nparts_max - 1, pa); |
9dea2923 DB |
1122 | } |
1123 | ||
e3661531 | 1124 | static void check(struct fdisk_context *cxt, size_t n, |
5dfca634 KZ |
1125 | unsigned int h, unsigned int s, unsigned int c, |
1126 | unsigned int start) | |
1127 | { | |
1128 | unsigned int total, real_s, real_c; | |
1129 | ||
1130 | real_s = sector(s) - 1; | |
1131 | real_c = cylinder(s, c); | |
1132 | total = (real_c * cxt->geom.sectors + real_s) * cxt->geom.heads + h; | |
fcea064b | 1133 | |
5dfca634 | 1134 | if (!total) |
829f4206 | 1135 | fdisk_warnx(cxt, _("Partition %zu: contains sector 0"), n); |
5dfca634 | 1136 | if (h >= cxt->geom.heads) |
829f4206 | 1137 | fdisk_warnx(cxt, _("Partition %zu: head %d greater than " |
fcea064b | 1138 | "maximum %d"), n, h + 1, cxt->geom.heads); |
5dfca634 | 1139 | if (real_s >= cxt->geom.sectors) |
829f4206 | 1140 | fdisk_warnx(cxt, _("Partition %zu: sector %d greater than " |
fcea064b | 1141 | "maximum %llu"), n, s, cxt->geom.sectors); |
5dfca634 | 1142 | if (real_c >= cxt->geom.cylinders) |
829f4206 | 1143 | fdisk_warnx(cxt, _("Partition %zu: cylinder %d greater than " |
fcea064b KZ |
1144 | "maximum %llu"), |
1145 | n, real_c + 1, | |
1146 | cxt->geom.cylinders); | |
1147 | ||
5dfca634 | 1148 | if (cxt->geom.cylinders <= 1024 && start != total) |
829f4206 KZ |
1149 | fdisk_warnx(cxt, _("Partition %zu: previous sectors %u " |
1150 | "disagrees with total %u"), n, start, total); | |
5dfca634 KZ |
1151 | } |
1152 | ||
1153 | /* check_consistency() and long2chs() added Sat Mar 6 12:28:16 1993, | |
1154 | * faith@cs.unc.edu, based on code fragments from pfdisk by Gordon W. Ross, | |
1155 | * Jan. 1990 (version 1.2.1 by Gordon W. Ross Aug. 1990; Modified by S. | |
1156 | * Lubkin Oct. 1991). */ | |
1157 | ||
1158 | static void | |
1159 | long2chs(struct fdisk_context *cxt, unsigned long ls, | |
1160 | unsigned int *c, unsigned int *h, unsigned int *s) { | |
1161 | int spc = cxt->geom.heads * cxt->geom.sectors; | |
1162 | ||
1163 | *c = ls / spc; | |
1164 | ls = ls % spc; | |
1165 | *h = ls / cxt->geom.sectors; | |
1166 | *s = ls % cxt->geom.sectors + 1; /* sectors count from 1 */ | |
1167 | } | |
1168 | ||
f540fe15 | 1169 | static void check_consistency(struct fdisk_context *cxt, struct dos_partition *p, |
e3661531 | 1170 | size_t partition) |
5dfca634 KZ |
1171 | { |
1172 | unsigned int pbc, pbh, pbs; /* physical beginning c, h, s */ | |
1173 | unsigned int pec, peh, pes; /* physical ending c, h, s */ | |
1174 | unsigned int lbc, lbh, lbs; /* logical beginning c, h, s */ | |
1175 | unsigned int lec, leh, les; /* logical ending c, h, s */ | |
1176 | ||
1177 | if (!is_dos_compatible(cxt)) | |
1178 | return; | |
1179 | ||
1180 | if (!cxt->geom.heads || !cxt->geom.sectors || (partition >= 4)) | |
1181 | return; /* do not check extended partitions */ | |
1182 | ||
60c1b036 | 1183 | /* physical beginning c, h, s */ |
da967236 KZ |
1184 | pbc = (p->bc & 0xff) | ((p->bs << 2) & 0x300); |
1185 | pbh = p->bh; | |
1186 | pbs = p->bs & 0x3f; | |
5dfca634 | 1187 | |
60c1b036 | 1188 | /* physical ending c, h, s */ |
da967236 KZ |
1189 | pec = (p->ec & 0xff) | ((p->es << 2) & 0x300); |
1190 | peh = p->eh; | |
1191 | pes = p->es & 0x3f; | |
5dfca634 | 1192 | |
60c1b036 | 1193 | /* compute logical beginning (c, h, s) */ |
b44244cb | 1194 | long2chs(cxt, dos_partition_get_start(p), &lbc, &lbh, &lbs); |
5dfca634 | 1195 | |
60c1b036 | 1196 | /* compute logical ending (c, h, s) */ |
b44244cb | 1197 | long2chs(cxt, dos_partition_get_start(p) + dos_partition_get_size(p) - 1, &lec, &leh, &les); |
5dfca634 | 1198 | |
60c1b036 | 1199 | /* Same physical / logical beginning? */ |
fcea064b KZ |
1200 | if (cxt->geom.cylinders <= 1024 |
1201 | && (pbc != lbc || pbh != lbh || pbs != lbs)) { | |
829f4206 | 1202 | fdisk_warnx(cxt, _("Partition %zu: different physical/logical " |
fcea064b KZ |
1203 | "beginnings (non-Linux?): " |
1204 | "phys=(%d, %d, %d), logical=(%d, %d, %d)"), | |
1205 | partition + 1, | |
1206 | pbc, pbh, pbs, | |
1207 | lbc, lbh, lbs); | |
5dfca634 KZ |
1208 | } |
1209 | ||
60c1b036 | 1210 | /* Same physical / logical ending? */ |
fcea064b KZ |
1211 | if (cxt->geom.cylinders <= 1024 |
1212 | && (pec != lec || peh != leh || pes != les)) { | |
829f4206 | 1213 | fdisk_warnx(cxt, _("Partition %zu: different physical/logical " |
fcea064b KZ |
1214 | "endings: phys=(%d, %d, %d), logical=(%d, %d, %d)"), |
1215 | partition + 1, | |
1216 | pec, peh, pes, | |
1217 | lec, leh, les); | |
5dfca634 KZ |
1218 | } |
1219 | ||
60c1b036 | 1220 | /* Ending on cylinder boundary? */ |
5dfca634 | 1221 | if (peh != (cxt->geom.heads - 1) || pes != cxt->geom.sectors) { |
829f4206 | 1222 | fdisk_warnx(cxt, _("Partition %zu: does not end on " |
fcea064b | 1223 | "cylinder boundary."), |
5dfca634 KZ |
1224 | partition + 1); |
1225 | } | |
1226 | } | |
1227 | ||
9ffeb235 | 1228 | static int dos_verify_disklabel(struct fdisk_context *cxt) |
2ca61a61 | 1229 | { |
e3661531 | 1230 | size_t i, j; |
2ca61a61 | 1231 | sector_t total = 1, n_sectors = cxt->total_sectors; |
e3661531 KZ |
1232 | unsigned long long first[cxt->label->nparts_max], |
1233 | last[cxt->label->nparts_max]; | |
f540fe15 | 1234 | struct dos_partition *p; |
fcea064b | 1235 | struct fdisk_dos_label *l = self_label(cxt); |
2ca61a61 | 1236 | |
9ffeb235 KZ |
1237 | assert(fdisk_is_disklabel(cxt, DOS)); |
1238 | ||
e3661531 KZ |
1239 | fill_bounds(cxt, first, last); |
1240 | for (i = 0; i < cxt->label->nparts_max; i++) { | |
af0df606 | 1241 | struct pte *pe = self_pte(cxt, i); |
2ca61a61 | 1242 | |
af0df606 | 1243 | p = self_partition(cxt, i); |
d0a870c5 | 1244 | if (is_used_partition(p) && !IS_EXTENDED(p->sys_ind)) { |
2ca61a61 | 1245 | check_consistency(cxt, p, i); |
61eaad50 KZ |
1246 | fdisk_warn_alignment(cxt, get_abs_partition_start(pe), i); |
1247 | if (get_abs_partition_start(pe) < first[i]) | |
fcea064b | 1248 | fdisk_warnx(cxt, _( |
829f4206 | 1249 | "Partition %zu: bad start-of-data."), |
fcea064b KZ |
1250 | i + 1); |
1251 | ||
1252 | check(cxt, i + 1, p->eh, p->es, p->ec, last[i]); | |
2ca61a61 | 1253 | total += last[i] + 1 - first[i]; |
fcea064b KZ |
1254 | |
1255 | for (j = 0; j < i; j++) { | |
2ca61a61 DB |
1256 | if ((first[i] >= first[j] && first[i] <= last[j]) |
1257 | || ((last[i] <= last[j] && last[i] >= first[j]))) { | |
fcea064b | 1258 | |
829f4206 KZ |
1259 | fdisk_warnx(cxt, _("Partition %zu: " |
1260 | "overlaps partition %zu."), | |
fcea064b KZ |
1261 | j + 1, i + 1); |
1262 | ||
2ca61a61 DB |
1263 | total += first[i] >= first[j] ? |
1264 | first[i] : first[j]; | |
1265 | total -= last[i] <= last[j] ? | |
1266 | last[i] : last[j]; | |
1267 | } | |
fcea064b | 1268 | } |
2ca61a61 DB |
1269 | } |
1270 | } | |
1271 | ||
fcea064b | 1272 | if (l->ext_offset) { |
5d324c6b | 1273 | sector_t e_last; |
fcea064b | 1274 | p = self_partition(cxt, l->ext_index); |
5d324c6b | 1275 | e_last = dos_partition_get_start(p) |
af0df606 | 1276 | + dos_partition_get_size(p) - 1; |
2ca61a61 | 1277 | |
e3661531 | 1278 | for (i = 4; i < cxt->label->nparts_max; i++) { |
2ca61a61 | 1279 | total++; |
af0df606 KZ |
1280 | p = self_partition(cxt, i); |
1281 | ||
2ca61a61 | 1282 | if (!p->sys_ind) { |
e3661531 | 1283 | if (i != 4 || i + 1 < cxt->label->nparts_max) |
fcea064b | 1284 | fdisk_warnx(cxt, |
829f4206 | 1285 | _("Partition %zu: empty."), |
fcea064b KZ |
1286 | i + 1); |
1287 | } else if (first[i] < l->ext_offset | |
1288 | || last[i] > e_last) { | |
1289 | ||
829f4206 KZ |
1290 | fdisk_warnx(cxt, _("Logical partition %zu: " |
1291 | "not entirely in partition %zu."), | |
fcea064b | 1292 | i + 1, l->ext_index + 1); |
2ca61a61 | 1293 | } |
2ca61a61 DB |
1294 | } |
1295 | } | |
1296 | ||
1297 | if (total > n_sectors) | |
fcea064b KZ |
1298 | fdisk_warnx(cxt, _("Total allocated sectors %llu greater " |
1299 | "than the maximum %llu."), total, n_sectors); | |
2ca61a61 | 1300 | else if (total < n_sectors) |
fcea064b | 1301 | fdisk_warnx(cxt, _("Remaining %lld unallocated %ld-byte " |
ac1a559a | 1302 | "sectors."), n_sectors - total, cxt->sector_size); |
2ca61a61 DB |
1303 | |
1304 | return 0; | |
1305 | } | |
1306 | ||
9dea2923 DB |
1307 | /* |
1308 | * Ask the user for new partition type information (logical, extended). | |
0f639e54 DB |
1309 | * This function calls the actual partition adding logic - add_partition. |
1310 | * | |
1311 | * API callback. | |
9dea2923 | 1312 | */ |
77d6a70a KZ |
1313 | static int dos_add_partition(struct fdisk_context *cxt, |
1314 | struct fdisk_partition *pa) | |
9dea2923 | 1315 | { |
e3661531 KZ |
1316 | size_t i, free_primary = 0; |
1317 | int rc = 0; | |
fcea064b | 1318 | struct fdisk_dos_label *l = self_label(cxt); |
a3e37fa7 KZ |
1319 | struct dos_partition *ext = l->ext_offset ? |
1320 | self_partition(cxt, l->ext_index) : NULL; | |
9dea2923 | 1321 | |
9ffeb235 KZ |
1322 | assert(cxt); |
1323 | assert(cxt->label); | |
1324 | assert(fdisk_is_disklabel(cxt, DOS)); | |
1325 | ||
a3e37fa7 KZ |
1326 | |
1327 | /* pa specifies start within extended partition, add logical */ | |
1328 | if (pa && pa->start | |
1329 | && pa->start >= l->ext_offset | |
1330 | && pa->start <= l->ext_offset + dos_partition_get_size(ext)) { | |
1331 | rc = add_logical(cxt, pa); | |
1332 | goto done; | |
1333 | ||
1334 | /* pa specifies start, but outside extended partition */ | |
1335 | } else if (pa && pa->start && l->ext_offset) { | |
1336 | int j; | |
1337 | ||
1338 | j = get_partition_unused_primary(cxt, pa); | |
1339 | if (j >= 0) { | |
1340 | rc = add_partition(cxt, j, pa); | |
1341 | goto done; | |
1342 | } | |
1343 | ||
1344 | } | |
20f878fe | 1345 | |
af0df606 KZ |
1346 | for (i = 0; i < 4; i++) { |
1347 | struct dos_partition *p = self_partition(cxt, i); | |
28a5bccc | 1348 | free_primary += !is_used_partition(p); |
af0df606 | 1349 | } |
9dea2923 | 1350 | |
e3661531 | 1351 | if (!free_primary && cxt->label->nparts_max >= MAXIMUM_PARTS) { |
fcea064b KZ |
1352 | fdisk_info(cxt, _("The maximum number of partitions has " |
1353 | "been created.")); | |
8254c3a5 | 1354 | return -EINVAL; |
9dea2923 | 1355 | } |
1bf3a034 | 1356 | rc = 1; |
fcea064b | 1357 | |
9dea2923 | 1358 | if (!free_primary) { |
fcea064b KZ |
1359 | if (l->ext_offset) { |
1360 | fdisk_info(cxt, _("All primary partitions are in use.")); | |
77d6a70a | 1361 | rc = add_logical(cxt, pa); |
9dea2923 | 1362 | } else |
fcea064b | 1363 | fdisk_info(cxt, _("If you want to create more than " |
0d0d12ad | 1364 | "four partitions, you must replace a " |
fcea064b KZ |
1365 | "primary partition with an extended " |
1366 | "partition first.")); | |
1367 | ||
e3661531 | 1368 | } else if (cxt->label->nparts_max >= MAXIMUM_PARTS) { |
c9f63764 | 1369 | int j; |
1bf3a034 | 1370 | |
fcea064b KZ |
1371 | fdisk_info(cxt, _("All logical partitions are in use. " |
1372 | "Adding a primary partition.")); | |
77d6a70a | 1373 | j = get_partition_unused_primary(cxt, pa); |
c9f63764 | 1374 | if (j >= 0) |
77d6a70a | 1375 | rc = add_partition(cxt, j, pa); |
9dea2923 | 1376 | } else { |
20f878fe KZ |
1377 | char hint[BUFSIZ]; |
1378 | struct fdisk_ask *ask; | |
1379 | int c; | |
1380 | ||
1381 | ask = fdisk_new_ask(); | |
1382 | if (!ask) | |
1383 | return -ENOMEM; | |
1384 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_MENU); | |
1385 | fdisk_ask_set_query(ask, _("Partition type")); | |
1386 | fdisk_ask_menu_set_default(ask, free_primary == 1 | |
1387 | && !l->ext_offset ? 'e' : 'p'); | |
1388 | snprintf(hint, sizeof(hint), | |
1389 | _("%zu primary, %d extended, %zu free"), | |
1390 | 4 - (l->ext_offset ? 1 : 0) - free_primary, | |
1391 | l->ext_offset ? 1 : 0, | |
1392 | free_primary); | |
1393 | ||
1394 | fdisk_ask_menu_add_item(ask, 'p', _("primary"), hint); | |
1395 | if (!l->ext_offset) | |
1396 | fdisk_ask_menu_add_item(ask, 'e', _("extended"), _("container for logical partitions")); | |
1397 | else | |
1398 | fdisk_ask_menu_add_item(ask, 'l', _("logical"), _("numbered from 5")); | |
1399 | ||
1400 | rc = fdisk_do_ask(cxt, ask); | |
bd0d850b KZ |
1401 | if (rc) |
1402 | return rc; | |
20f878fe KZ |
1403 | fdisk_ask_menu_get_result(ask, &c); |
1404 | fdisk_free_ask(ask); | |
bd0d850b | 1405 | |
9dea2923 | 1406 | if (c == 'p') { |
77d6a70a | 1407 | int j = get_partition_unused_primary(cxt, pa); |
c9f63764 | 1408 | if (j >= 0) |
77d6a70a | 1409 | rc = add_partition(cxt, j, pa); |
8254c3a5 | 1410 | goto done; |
fcea064b | 1411 | } else if (c == 'l' && l->ext_offset) { |
77d6a70a | 1412 | rc = add_logical(cxt, pa); |
8254c3a5 | 1413 | goto done; |
fcea064b | 1414 | } else if (c == 'e' && !l->ext_offset) { |
77d6a70a | 1415 | int j = get_partition_unused_primary(cxt, pa); |
c9f63764 | 1416 | if (j >= 0) { |
77d6a70a KZ |
1417 | struct fdisk_partition xpa = { .type = NULL }; |
1418 | struct fdisk_parttype *t; | |
1419 | ||
bb58112e KZ |
1420 | t = fdisk_get_parttype_from_code(cxt, |
1421 | MBR_DOS_EXTENDED_PARTITION); | |
77d6a70a KZ |
1422 | if (!pa) |
1423 | pa = &xpa; | |
1424 | fdisk_partition_set_type(pa, t); | |
1425 | rc = add_partition(cxt, j, pa); | |
ed470672 | 1426 | } |
8254c3a5 | 1427 | goto done; |
9dea2923 | 1428 | } else |
ac1a559a | 1429 | fdisk_warnx(cxt, _("Invalid partition type `%c'."), c); |
9dea2923 | 1430 | } |
8254c3a5 | 1431 | done: |
e3661531 KZ |
1432 | if (rc == 0) |
1433 | cxt->label->nparts_cur++; | |
8254c3a5 | 1434 | return rc; |
9dea2923 | 1435 | } |
0dc13a38 | 1436 | |
fae7b1bc DB |
1437 | static int write_sector(struct fdisk_context *cxt, sector_t secno, |
1438 | unsigned char *buf) | |
0dc13a38 | 1439 | { |
21770662 KZ |
1440 | int rc; |
1441 | ||
1442 | rc = seek_sector(cxt, secno); | |
1443 | if (rc != 0) { | |
98aeae96 | 1444 | fdisk_warn(cxt, _("Cannot write sector %jd: seek failed"), |
21770662 KZ |
1445 | (uintmax_t) secno); |
1446 | return rc; | |
1447 | } | |
bcddbe96 KZ |
1448 | |
1449 | DBG(LABEL, dbgprint("DOS: writting to sector %ju", (uintmax_t) secno)); | |
1450 | ||
fae7b1bc DB |
1451 | if (write(cxt->dev_fd, buf, cxt->sector_size) != (ssize_t) cxt->sector_size) |
1452 | return -errno; | |
1453 | return 0; | |
1454 | } | |
1455 | ||
9ffeb235 | 1456 | static int dos_write_disklabel(struct fdisk_context *cxt) |
fae7b1bc | 1457 | { |
8b3d9241 | 1458 | struct fdisk_dos_label *l = self_label(cxt); |
e3661531 | 1459 | size_t i; |
8b3d9241 | 1460 | int rc = 0, mbr_changed = 0; |
0dc13a38 | 1461 | |
9ffeb235 KZ |
1462 | assert(cxt); |
1463 | assert(cxt->label); | |
1464 | assert(fdisk_is_disklabel(cxt, DOS)); | |
1465 | ||
8b3d9241 KZ |
1466 | mbr_changed = l->non_pt_changed; |
1467 | ||
0dc13a38 | 1468 | /* MBR (primary partitions) */ |
8b3d9241 | 1469 | if (!mbr_changed) { |
af0df606 KZ |
1470 | for (i = 0; i < 4; i++) { |
1471 | struct pte *pe = self_pte(cxt, i); | |
1472 | if (pe->changed) | |
8b3d9241 | 1473 | mbr_changed = 1; |
af0df606 | 1474 | } |
0dc13a38 | 1475 | } |
8b3d9241 | 1476 | if (mbr_changed) { |
67987b47 | 1477 | mbr_set_magic(cxt->firstsector); |
fae7b1bc DB |
1478 | rc = write_sector(cxt, 0, cxt->firstsector); |
1479 | if (rc) | |
1480 | goto done; | |
0dc13a38 | 1481 | } |
8b3d9241 | 1482 | |
bcddbe96 KZ |
1483 | if (cxt->label->nparts_max <= 4 && l->ext_offset) { |
1484 | /* we have empty extended partition, check if the partition has | |
1485 | * been modified and then cleanup possible remaining EBR */ | |
1486 | struct pte *pe = self_pte(cxt, l->ext_index); | |
1487 | unsigned char empty[512] = { 0 }; | |
1488 | sector_t off = pe ? get_abs_partition_start(pe) : 0; | |
1489 | ||
1490 | if (off && pe->changed) { | |
1491 | mbr_set_magic(empty); | |
1492 | write_sector(cxt, off, empty); | |
1493 | } | |
1494 | } | |
1495 | ||
0dc13a38 | 1496 | /* EBR (logical partitions) */ |
e3661531 | 1497 | for (i = 4; i < cxt->label->nparts_max; i++) { |
af0df606 | 1498 | struct pte *pe = self_pte(cxt, i); |
0dc13a38 DB |
1499 | |
1500 | if (pe->changed) { | |
87a97832 | 1501 | mbr_set_magic(pe->sectorbuffer); |
fae7b1bc DB |
1502 | rc = write_sector(cxt, pe->offset, pe->sectorbuffer); |
1503 | if (rc) | |
1504 | goto done; | |
0dc13a38 DB |
1505 | } |
1506 | } | |
fae7b1bc DB |
1507 | |
1508 | done: | |
1509 | return rc; | |
0dc13a38 | 1510 | } |
b8855c86 | 1511 | |
f32a9be4 KZ |
1512 | static int dos_locate_disklabel(struct fdisk_context *cxt, int n, |
1513 | const char **name, off_t *offset, size_t *size) | |
1514 | { | |
1515 | assert(cxt); | |
1516 | ||
1517 | *name = NULL; | |
1518 | *offset = 0; | |
1519 | *size = 0; | |
1520 | ||
1521 | switch (n) { | |
1522 | case 0: | |
1523 | *name = "MBR"; | |
1524 | *offset = 0; | |
1525 | *size = 512; | |
1526 | break; | |
1527 | default: | |
1528 | /* extended partitions */ | |
1529 | if (n - 1 + 4 < cxt->label->nparts_max) { | |
1530 | struct pte *pe = self_pte(cxt, n - 1 + 4); | |
1531 | ||
1532 | assert(pe->private_sectorbuffer); | |
1533 | ||
1534 | *name = "EBR"; | |
1535 | *offset = pe->offset * cxt->sector_size; | |
1536 | *size = 512; | |
1537 | } else | |
1538 | return 1; | |
1539 | break; | |
1540 | } | |
1541 | ||
1542 | return 0; | |
1543 | } | |
1544 | ||
8a95621d | 1545 | static int dos_set_parttype( |
e3661531 | 1546 | struct fdisk_context *cxt, |
9ffeb235 | 1547 | size_t partnum, |
8a95621d | 1548 | struct fdisk_parttype *t) |
02460b8a | 1549 | { |
f540fe15 | 1550 | struct dos_partition *p; |
02460b8a | 1551 | |
9ffeb235 KZ |
1552 | assert(cxt); |
1553 | assert(cxt->label); | |
e09435aa | 1554 | assert(fdisk_is_disklabel(cxt, DOS)); |
9ffeb235 KZ |
1555 | |
1556 | if (partnum >= cxt->label->nparts_max || !t || t->type > UINT8_MAX) | |
02460b8a KZ |
1557 | return -EINVAL; |
1558 | ||
af0df606 | 1559 | p = self_partition(cxt, partnum); |
02460b8a KZ |
1560 | if (t->type == p->sys_ind) |
1561 | return 0; | |
1562 | ||
1563 | if (IS_EXTENDED(p->sys_ind) || IS_EXTENDED(t->type)) { | |
fcea064b KZ |
1564 | fdisk_warnx(cxt, _("You cannot change a partition into an " |
1565 | "extended one or vice versa. Delete it first.")); | |
02460b8a KZ |
1566 | return -EINVAL; |
1567 | } | |
1568 | ||
1569 | if (is_dos_partition(t->type) || is_dos_partition(p->sys_ind)) | |
fcea064b | 1570 | fdisk_info(cxt, _("If you have created or modified any DOS 6.x " |
0d0d12ad | 1571 | "partitions, please see the fdisk documentation for additional " |
fcea064b | 1572 | "information.")); |
02460b8a | 1573 | |
b37ab36e KZ |
1574 | if (!t->type) |
1575 | fdisk_warnx(cxt, _("Type 0 means free space to many systems. " | |
1576 | "Having partitions of type 0 is probably unwise.")); | |
02460b8a | 1577 | p->sys_ind = t->type; |
af0df606 KZ |
1578 | |
1579 | partition_set_changed(cxt, partnum, 1); | |
02460b8a KZ |
1580 | return 0; |
1581 | } | |
1582 | ||
dfc96cbf KZ |
1583 | /* |
1584 | * Check whether partition entries are ordered by their starting positions. | |
1585 | * Return 0 if OK. Return i if partition i should have been earlier. | |
1586 | * Two separate checks: primary and logical partitions. | |
1587 | */ | |
e3661531 | 1588 | static int wrong_p_order(struct fdisk_context *cxt, size_t *prev) |
dfc96cbf | 1589 | { |
e3661531 KZ |
1590 | size_t last_p_start_pos = 0, p_start_pos; |
1591 | size_t i, last_i = 0; | |
dfc96cbf | 1592 | |
e3661531 | 1593 | for (i = 0 ; i < cxt->label->nparts_max; i++) { |
af0df606 KZ |
1594 | |
1595 | struct pte *pe = self_pte(cxt, i); | |
1596 | struct dos_partition *p = pe->pt_entry; | |
1597 | ||
dfc96cbf KZ |
1598 | if (i == 4) { |
1599 | last_i = 4; | |
1600 | last_p_start_pos = 0; | |
1601 | } | |
d0a870c5 | 1602 | if (is_used_partition(p)) { |
61eaad50 | 1603 | p_start_pos = get_abs_partition_start(pe); |
dfc96cbf KZ |
1604 | |
1605 | if (last_p_start_pos > p_start_pos) { | |
1606 | if (prev) | |
1607 | *prev = last_i; | |
1608 | return i; | |
1609 | } | |
1610 | ||
1611 | last_p_start_pos = p_start_pos; | |
1612 | last_i = i; | |
1613 | } | |
1614 | } | |
1615 | return 0; | |
1616 | } | |
6d864a49 | 1617 | |
1cf67f1c KZ |
1618 | static int dos_list_disklabel(struct fdisk_context *cxt) |
1619 | { | |
6d864a49 | 1620 | assert(cxt); |
9ffeb235 | 1621 | assert(cxt->label); |
6d864a49 KZ |
1622 | assert(fdisk_is_disklabel(cxt, DOS)); |
1623 | ||
6c89f750 | 1624 | return 0; |
262002ee | 1625 | } |
1cf67f1c | 1626 | |
262002ee KZ |
1627 | static int dos_get_partition(struct fdisk_context *cxt, size_t n, |
1628 | struct fdisk_partition *pa) | |
1629 | { | |
1630 | struct dos_partition *p; | |
1631 | struct pte *pe; | |
1632 | unsigned int psects; | |
1cf67f1c | 1633 | |
262002ee KZ |
1634 | assert(cxt); |
1635 | assert(pa); | |
1636 | assert(cxt->label); | |
1637 | assert(fdisk_is_disklabel(cxt, DOS)); | |
1cf67f1c | 1638 | |
262002ee KZ |
1639 | pe = self_pte(cxt, n); |
1640 | p = pe->pt_entry; | |
1641 | pa->used = !is_cleared_partition(p); | |
1642 | if (!pa->used) | |
1643 | return 0; | |
1cf67f1c | 1644 | |
262002ee | 1645 | psects = dos_partition_get_size(p); |
1cf67f1c | 1646 | |
7f01ec7a | 1647 | pa->type = dos_partition_parttype(cxt, p); |
262002ee | 1648 | pa->boot = p->boot_ind ? p->boot_ind == ACTIVE_FLAG ? '*' : '?' : ' '; |
77d6a70a KZ |
1649 | pa->start = get_abs_partition_start(pe); |
1650 | pa->end = get_abs_partition_start(pe) + psects - (psects ? 1 : 0); | |
1651 | pa->size = psects; | |
1cf67f1c | 1652 | |
03643931 KZ |
1653 | if (n >= 4) { |
1654 | pa->parent_partno = self_label(cxt)->ext_index; | |
1655 | pa->nested = 1; | |
1656 | } | |
1657 | ||
262002ee KZ |
1658 | if (asprintf(&pa->attrs, "%02x", p->boot_ind) < 0) |
1659 | return -ENOMEM; | |
6d864a49 | 1660 | |
262002ee KZ |
1661 | /* start C/H/S */ |
1662 | if (asprintf(&pa->start_addr, "%d/%d/%d", | |
1663 | cylinder(p->bs, p->bc), | |
1664 | sector(p->bs), | |
1665 | p->bh) < 0) | |
1666 | return -ENOMEM; | |
1cf67f1c | 1667 | |
262002ee KZ |
1668 | /* end C/H/S */ |
1669 | if (asprintf(&pa->end_addr, "%d/%d/%d", | |
1670 | cylinder(p->es, p->ec), | |
1671 | sector(p->es), | |
1672 | p->eh) < 0) | |
1673 | return -ENOMEM; | |
6d864a49 | 1674 | |
262002ee | 1675 | return 0; |
6d864a49 KZ |
1676 | } |
1677 | ||
dfc96cbf KZ |
1678 | /* |
1679 | * Fix the chain of logicals. | |
fcea064b | 1680 | * ext_offset is unchanged, the set of sectors used is unchanged |
dfc96cbf KZ |
1681 | * The chain is sorted so that sectors increase, and so that |
1682 | * starting sectors increase. | |
1683 | * | |
1684 | * After this it may still be that cfdisk doesn't like the table. | |
1685 | * (This is because cfdisk considers expanded parts, from link to | |
1686 | * end of partition, and these may still overlap.) | |
1687 | * Now | |
1688 | * sfdisk /dev/hda > ohda; sfdisk /dev/hda < ohda | |
1689 | * may help. | |
1690 | */ | |
e3661531 | 1691 | static void fix_chain_of_logicals(struct fdisk_context *cxt) |
dfc96cbf | 1692 | { |
af0df606 | 1693 | struct fdisk_dos_label *l = self_label(cxt); |
e3661531 | 1694 | size_t j, oj, ojj, sj, sjj; |
f540fe15 | 1695 | struct dos_partition *pj,*pjj,tmp; |
dfc96cbf KZ |
1696 | |
1697 | /* Stage 1: sort sectors but leave sector of part 4 */ | |
fcea064b | 1698 | /* (Its sector is the global ext_offset.) */ |
60c1b036 | 1699 | stage1: |
e3661531 | 1700 | for (j = 5; j < cxt->label->nparts_max - 1; j++) { |
af0df606 KZ |
1701 | oj = l->ptes[j].offset; |
1702 | ojj = l->ptes[j + 1].offset; | |
dfc96cbf | 1703 | if (oj > ojj) { |
af0df606 KZ |
1704 | l->ptes[j].offset = ojj; |
1705 | l->ptes[j + 1].offset = oj; | |
1706 | pj = l->ptes[j].pt_entry; | |
b44244cb | 1707 | dos_partition_set_start(pj, dos_partition_get_start(pj)+oj-ojj); |
af0df606 | 1708 | pjj = l->ptes[j + 1].pt_entry; |
b44244cb | 1709 | dos_partition_set_start(pjj, dos_partition_get_start(pjj)+ojj-oj); |
af0df606 | 1710 | dos_partition_set_start(l->ptes[j - 1].ex_entry, |
fcea064b | 1711 | ojj - l->ext_offset); |
af0df606 | 1712 | dos_partition_set_start(l->ptes[j].ex_entry, |
fcea064b | 1713 | oj - l->ext_offset); |
dfc96cbf KZ |
1714 | goto stage1; |
1715 | } | |
1716 | } | |
1717 | ||
1718 | /* Stage 2: sort starting sectors */ | |
60c1b036 | 1719 | stage2: |
e3661531 | 1720 | for (j = 4; j < cxt->label->nparts_max - 1; j++) { |
af0df606 KZ |
1721 | pj = l->ptes[j].pt_entry; |
1722 | pjj = l->ptes[j + 1].pt_entry; | |
b44244cb KZ |
1723 | sj = dos_partition_get_start(pj); |
1724 | sjj = dos_partition_get_start(pjj); | |
af0df606 KZ |
1725 | oj = l->ptes[j].offset; |
1726 | ojj = l->ptes[j+1].offset; | |
dfc96cbf KZ |
1727 | if (oj+sj > ojj+sjj) { |
1728 | tmp = *pj; | |
1729 | *pj = *pjj; | |
1730 | *pjj = tmp; | |
b44244cb KZ |
1731 | dos_partition_set_start(pj, ojj+sjj-oj); |
1732 | dos_partition_set_start(pjj, oj+sj-ojj); | |
dfc96cbf KZ |
1733 | goto stage2; |
1734 | } | |
1735 | } | |
1736 | ||
1737 | /* Probably something was changed */ | |
e3661531 | 1738 | for (j = 4; j < cxt->label->nparts_max; j++) |
af0df606 | 1739 | l->ptes[j].changed = 1; |
dfc96cbf KZ |
1740 | } |
1741 | ||
f8ad3899 | 1742 | int fdisk_dos_fix_order(struct fdisk_context *cxt) |
dfc96cbf KZ |
1743 | { |
1744 | struct pte *pei, *pek; | |
e3661531 | 1745 | size_t i,k; |
dfc96cbf | 1746 | |
e3661531 | 1747 | if (!wrong_p_order(cxt, NULL)) { |
fcea064b | 1748 | fdisk_info(cxt, _("Nothing to do. Ordering is correct already.")); |
f8ad3899 | 1749 | return 0; |
dfc96cbf KZ |
1750 | } |
1751 | ||
e3661531 | 1752 | while ((i = wrong_p_order(cxt, &k)) != 0 && i < 4) { |
dfc96cbf KZ |
1753 | /* partition i should have come earlier, move it */ |
1754 | /* We have to move data in the MBR */ | |
f540fe15 | 1755 | struct dos_partition *pi, *pk, *pe, pbuf; |
af0df606 KZ |
1756 | pei = self_pte(cxt, i); |
1757 | pek = self_pte(cxt, k); | |
dfc96cbf | 1758 | |
6864f168 KZ |
1759 | pe = pei->ex_entry; |
1760 | pei->ex_entry = pek->ex_entry; | |
1761 | pek->ex_entry = pe; | |
dfc96cbf | 1762 | |
6864f168 KZ |
1763 | pi = pei->pt_entry; |
1764 | pk = pek->pt_entry; | |
dfc96cbf | 1765 | |
f540fe15 KZ |
1766 | memmove(&pbuf, pi, sizeof(struct dos_partition)); |
1767 | memmove(pi, pk, sizeof(struct dos_partition)); | |
1768 | memmove(pk, &pbuf, sizeof(struct dos_partition)); | |
dfc96cbf | 1769 | |
af0df606 KZ |
1770 | partition_set_changed(cxt, i, 1); |
1771 | partition_set_changed(cxt, k, 1); | |
dfc96cbf KZ |
1772 | } |
1773 | ||
1774 | if (i) | |
e3661531 | 1775 | fix_chain_of_logicals(cxt); |
dfc96cbf | 1776 | |
f61d2632 | 1777 | fdisk_info(cxt, _("Done.")); |
f8ad3899 | 1778 | return 0; |
dfc96cbf | 1779 | } |
6d864a49 | 1780 | |
829f4206 | 1781 | int fdisk_dos_move_begin(struct fdisk_context *cxt, size_t i) |
71ee484e | 1782 | { |
f8ad3899 KZ |
1783 | struct pte *pe; |
1784 | struct dos_partition *p; | |
71ee484e | 1785 | unsigned int new, free_start, curr_start, last; |
bd0d850b | 1786 | uintmax_t res = 0; |
e3661531 | 1787 | size_t x; |
f8ad3899 | 1788 | int rc; |
71ee484e KZ |
1789 | |
1790 | assert(cxt); | |
1791 | assert(fdisk_is_disklabel(cxt, DOS)); | |
1792 | ||
f8ad3899 KZ |
1793 | pe = self_pte(cxt, i); |
1794 | p = pe->pt_entry; | |
1795 | ||
d0a870c5 | 1796 | if (!is_used_partition(p) || IS_EXTENDED (p->sys_ind)) { |
829f4206 | 1797 | fdisk_warnx(cxt, _("Partition %zu: no data area."), i + 1); |
f8ad3899 | 1798 | return 0; |
71ee484e KZ |
1799 | } |
1800 | ||
1801 | /* the default start is at the second sector of the disk or at the | |
1802 | * second sector of the extended partition | |
1803 | */ | |
1804 | free_start = pe->offset ? pe->offset + 1 : 1; | |
1805 | ||
61eaad50 | 1806 | curr_start = get_abs_partition_start(pe); |
71ee484e KZ |
1807 | |
1808 | /* look for a free space before the current start of the partition */ | |
e3661531 | 1809 | for (x = 0; x < cxt->label->nparts_max; x++) { |
71ee484e | 1810 | unsigned int end; |
af0df606 | 1811 | struct pte *prev_pe = self_pte(cxt, x); |
f540fe15 | 1812 | struct dos_partition *prev_p = prev_pe->pt_entry; |
71ee484e KZ |
1813 | |
1814 | if (!prev_p) | |
1815 | continue; | |
af0df606 KZ |
1816 | end = get_abs_partition_start(prev_pe) |
1817 | + dos_partition_get_size(prev_p); | |
71ee484e | 1818 | |
d0a870c5 | 1819 | if (is_used_partition(prev_p) && |
71ee484e KZ |
1820 | end > free_start && end <= curr_start) |
1821 | free_start = end; | |
1822 | } | |
1823 | ||
61eaad50 | 1824 | last = get_abs_partition_start(pe) + dos_partition_get_size(p) - 1; |
71ee484e | 1825 | |
f8ad3899 KZ |
1826 | rc = fdisk_ask_number(cxt, free_start, curr_start, last, |
1827 | _("New beginning of data"), &res); | |
1828 | if (rc) | |
1829 | return rc; | |
1830 | ||
bd0d850b | 1831 | new = res - pe->offset; |
71ee484e | 1832 | |
b44244cb | 1833 | if (new != dos_partition_get_size(p)) { |
af0df606 KZ |
1834 | unsigned int sects = dos_partition_get_size(p) |
1835 | + dos_partition_get_start(p) - new; | |
1836 | ||
b44244cb KZ |
1837 | dos_partition_set_size(p, sects); |
1838 | dos_partition_set_start(p, new); | |
af0df606 KZ |
1839 | |
1840 | partition_set_changed(cxt, i, 1); | |
71ee484e | 1841 | } |
f8ad3899 KZ |
1842 | |
1843 | return rc; | |
71ee484e | 1844 | } |
6d864a49 | 1845 | |
8c0a7f91 | 1846 | static int dos_partition_is_used( |
47b8e7c0 | 1847 | struct fdisk_context *cxt, |
8c0a7f91 | 1848 | size_t i) |
47b8e7c0 | 1849 | { |
f540fe15 | 1850 | struct dos_partition *p; |
47b8e7c0 KZ |
1851 | |
1852 | assert(cxt); | |
9ffeb235 | 1853 | assert(cxt->label); |
47b8e7c0 KZ |
1854 | assert(fdisk_is_disklabel(cxt, DOS)); |
1855 | ||
8c0a7f91 KZ |
1856 | if (i >= cxt->label->nparts_max) |
1857 | return 0; | |
47b8e7c0 | 1858 | |
af0df606 | 1859 | p = self_partition(cxt, i); |
47b8e7c0 | 1860 | |
8c0a7f91 | 1861 | return p && !is_cleared_partition(p); |
47b8e7c0 KZ |
1862 | } |
1863 | ||
fb1caca7 KZ |
1864 | static int dos_toggle_partition_flag( |
1865 | struct fdisk_context *cxt, | |
1866 | size_t i, | |
1867 | unsigned long flag) | |
1868 | { | |
f540fe15 | 1869 | struct dos_partition *p; |
fb1caca7 KZ |
1870 | |
1871 | assert(cxt); | |
1872 | assert(cxt->label); | |
1873 | assert(fdisk_is_disklabel(cxt, DOS)); | |
1874 | ||
1875 | if (i >= cxt->label->nparts_max) | |
1876 | return -EINVAL; | |
1877 | ||
af0df606 | 1878 | p = self_partition(cxt, i); |
fb1caca7 KZ |
1879 | |
1880 | switch (flag) { | |
1881 | case DOS_FLAG_ACTIVE: | |
1882 | if (IS_EXTENDED(p->sys_ind) && !p->boot_ind) | |
829f4206 KZ |
1883 | fdisk_warnx(cxt, _("Partition %zu: is an extended " |
1884 | "partition."), i + 1); | |
fb1caca7 KZ |
1885 | |
1886 | p->boot_ind = (p->boot_ind ? 0 : ACTIVE_FLAG); | |
af0df606 | 1887 | partition_set_changed(cxt, i, 1); |
f736ae51 KZ |
1888 | fdisk_sinfo(cxt, FDISK_INFO_SUCCESS, |
1889 | p->boot_ind ? | |
1890 | _("The bootable flag on partition %zu is enabled now.") : | |
1891 | _("The bootable flag on partition %zu is disabled now."), | |
1892 | i + 1); | |
fb1caca7 KZ |
1893 | break; |
1894 | default: | |
1895 | return 1; | |
1896 | } | |
1897 | ||
1898 | return 0; | |
1899 | } | |
1900 | ||
262002ee KZ |
1901 | static const struct fdisk_column dos_columns[] = |
1902 | { | |
1903 | /* basic */ | |
1904 | { FDISK_COL_DEVICE, N_("Device"), 10, 0 }, | |
1905 | { FDISK_COL_BOOT, N_("Boot"), 1, 0 }, | |
1906 | { FDISK_COL_START, N_("Start"), 5, TT_FL_RIGHT }, | |
1907 | { FDISK_COL_END, N_("End"), 5, TT_FL_RIGHT }, | |
1908 | { FDISK_COL_SECTORS, N_("Sectors"), 5, TT_FL_RIGHT }, | |
d0059a24 | 1909 | { FDISK_COL_CYLINDERS, N_("Cylinders"), 5, TT_FL_RIGHT }, |
262002ee KZ |
1910 | { FDISK_COL_SIZE, N_("Size"), 5, TT_FL_RIGHT, FDISK_COLFL_EYECANDY }, |
1911 | { FDISK_COL_TYPEID, N_("Id"), 2, TT_FL_RIGHT }, | |
1912 | { FDISK_COL_TYPE, N_("Type"), 0.1, TT_FL_TRUNC }, | |
1913 | ||
1914 | /* expert mode */ | |
1915 | { FDISK_COL_SADDR, N_("Start-C/H/S"), 1, TT_FL_RIGHT, FDISK_COLFL_DETAIL }, | |
1916 | { FDISK_COL_EADDR, N_("End-C/H/S"), 1, TT_FL_RIGHT, FDISK_COLFL_DETAIL }, | |
1917 | { FDISK_COL_ATTR, N_("Attrs"), 2, TT_FL_RIGHT, FDISK_COLFL_DETAIL } | |
1918 | ||
1919 | }; | |
1920 | ||
0c5d095e | 1921 | static const struct fdisk_label_operations dos_operations = |
b8855c86 | 1922 | { |
0c5d095e KZ |
1923 | .probe = dos_probe_label, |
1924 | .write = dos_write_disklabel, | |
1925 | .verify = dos_verify_disklabel, | |
1926 | .create = dos_create_disklabel, | |
f32a9be4 | 1927 | .locate = dos_locate_disklabel, |
1cf67f1c | 1928 | .list = dos_list_disklabel, |
21fe3dde | 1929 | .get_id = dos_get_disklabel_id, |
35b1f0a4 | 1930 | .set_id = dos_set_disklabel_id, |
1cf67f1c | 1931 | |
262002ee | 1932 | .get_part = dos_get_partition, |
77d6a70a | 1933 | .add_part = dos_add_partition, |
262002ee | 1934 | |
0c5d095e | 1935 | .part_delete = dos_delete_partition, |
0c5d095e | 1936 | .part_set_type = dos_set_parttype, |
47b8e7c0 | 1937 | |
fb1caca7 | 1938 | .part_toggle_flag = dos_toggle_partition_flag, |
8c0a7f91 | 1939 | .part_is_used = dos_partition_is_used, |
47b8e7c0 | 1940 | |
cf3808e4 | 1941 | .reset_alignment = dos_reset_alignment, |
ddec0e40 KZ |
1942 | |
1943 | .deinit = dos_deinit, | |
b8855c86 | 1944 | }; |
0c5d095e KZ |
1945 | |
1946 | /* | |
1947 | * allocates DOS in-memory stuff | |
1948 | */ | |
1949 | struct fdisk_label *fdisk_new_dos_label(struct fdisk_context *cxt) | |
1950 | { | |
1951 | struct fdisk_label *lb; | |
1952 | struct fdisk_dos_label *dos; | |
1953 | ||
1954 | assert(cxt); | |
1955 | ||
1956 | dos = calloc(1, sizeof(*dos)); | |
1957 | if (!dos) | |
1958 | return NULL; | |
1959 | ||
1960 | /* initialize generic part of the driver */ | |
1961 | lb = (struct fdisk_label *) dos; | |
1962 | lb->name = "dos"; | |
53b422ab | 1963 | lb->id = FDISK_DISKLABEL_DOS; |
0c5d095e KZ |
1964 | lb->op = &dos_operations; |
1965 | lb->parttypes = dos_parttypes; | |
1966 | lb->nparttypes = ARRAY_SIZE(dos_parttypes); | |
262002ee KZ |
1967 | lb->columns = dos_columns; |
1968 | lb->ncolumns = ARRAY_SIZE(dos_columns); | |
0c5d095e KZ |
1969 | |
1970 | return lb; | |
1971 | } | |
852ce62b KZ |
1972 | |
1973 | /* | |
1974 | * Public label specific functions | |
1975 | */ | |
1976 | ||
1977 | int fdisk_dos_enable_compatible(struct fdisk_label *lb, int enable) | |
1978 | { | |
1979 | struct fdisk_dos_label *dos = (struct fdisk_dos_label *) lb; | |
1980 | ||
1981 | if (!lb) | |
1982 | return -EINVAL; | |
1983 | ||
1984 | dos->compatible = enable; | |
0b52b94c KZ |
1985 | if (enable) |
1986 | lb->flags |= FDISK_LABEL_FL_REQUIRE_GEOMETRY; | |
852ce62b KZ |
1987 | return 0; |
1988 | } | |
1989 | ||
1990 | int fdisk_dos_is_compatible(struct fdisk_label *lb) | |
1991 | { | |
1992 | return ((struct fdisk_dos_label *) lb)->compatible; | |
1993 | } |