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5dbff4c0 | 1 | /* |
766d5156 DB |
2 | * Copyright (C) 2007 Karel Zak <kzak@redhat.com> |
3 | * Copyright (C) 2012 Davidlohr Bueso <dave@gnu.org> | |
4 | * | |
5 | * GUID Partition Table (GPT) support. Based on UEFI Specs 2.3.1 | |
6 | * Chapter 5: GUID Partition Table (GPT) Disk Layout (Jun 27th, 2012). | |
7 | * Some ideas and inspiration from GNU parted and gptfdisk. | |
5dbff4c0 | 8 | */ |
5dbff4c0 KZ |
9 | #include <stdio.h> |
10 | #include <string.h> | |
11 | #include <stdlib.h> | |
12 | #include <inttypes.h> | |
13 | #include <sys/stat.h> | |
5dbff4c0 KZ |
14 | #include <sys/utsname.h> |
15 | #include <sys/types.h> | |
16 | #include <fcntl.h> | |
17 | #include <unistd.h> | |
18 | #include <errno.h> | |
766d5156 DB |
19 | #include <ctype.h> |
20 | #include <uuid.h> | |
5dbff4c0 | 21 | |
62d50bbe KZ |
22 | #include "fdiskP.h" |
23 | ||
766d5156 | 24 | #include "nls.h" |
766d5156 | 25 | #include "crc32.h" |
810f986b | 26 | #include "blkdev.h" |
9eca9d0d | 27 | #include "bitops.h" |
766d5156 | 28 | #include "strutils.h" |
19613111 | 29 | #include "all-io.h" |
766d5156 DB |
30 | |
31 | #define GPT_HEADER_SIGNATURE 0x5452415020494645LL /* EFI PART */ | |
32 | #define GPT_HEADER_REVISION_V1_02 0x00010200 | |
33 | #define GPT_HEADER_REVISION_V1_00 0x00010000 | |
34 | #define GPT_HEADER_REVISION_V0_99 0x00009900 | |
e9bf0935 | 35 | #define GPT_HEADER_MINSZ 92 /* bytes */ |
766d5156 DB |
36 | |
37 | #define GPT_PMBR_LBA 0 | |
38 | #define GPT_MBR_PROTECTIVE 1 | |
39 | #define GPT_MBR_HYBRID 2 | |
40 | ||
41 | #define GPT_PRIMARY_PARTITION_TABLE_LBA 0x00000001 | |
42 | ||
43 | #define EFI_PMBR_OSTYPE 0xEE | |
44 | #define MSDOS_MBR_SIGNATURE 0xAA55 | |
3f731001 DB |
45 | #define GPT_PART_NAME_LEN 72 / sizeof(uint16_t) |
46 | #define GPT_NPARTITIONS 128 | |
766d5156 DB |
47 | |
48 | /* Globally unique identifier */ | |
49 | struct gpt_guid { | |
50 | uint32_t time_low; | |
51 | uint16_t time_mid; | |
52 | uint16_t time_hi_and_version; | |
53 | uint8_t clock_seq_hi; | |
54 | uint8_t clock_seq_low; | |
55 | uint8_t node[6]; | |
56 | }; | |
57 | ||
58 | ||
59 | /* only checking that the GUID is 0 is enough to verify an empty partition. */ | |
60 | #define GPT_UNUSED_ENTRY_GUID \ | |
61 | ((struct gpt_guid) { 0x00000000, 0x0000, 0x0000, 0x00, 0x00, \ | |
62 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}) | |
63 | ||
64 | /* Linux native partition type */ | |
c0d14b09 | 65 | #define GPT_DEFAULT_ENTRY_TYPE "0FC63DAF-8483-4772-8E79-3D69D8477DE4" |
766d5156 DB |
66 | |
67 | /* | |
68 | * Attribute bits | |
69 | */ | |
70 | struct gpt_attr { | |
71 | uint64_t required_to_function:1; | |
72 | uint64_t no_blockio_protocol:1; | |
73 | uint64_t legacy_bios_bootable:1; | |
74 | uint64_t reserved:45; | |
75 | uint64_t guid_secific:16; | |
76 | } __attribute__ ((packed)); | |
77 | ||
78 | /* The GPT Partition entry array contains an array of GPT entries. */ | |
79 | struct gpt_entry { | |
d45fa25d KZ |
80 | struct gpt_guid type; /* purpose and type of the partition */ |
81 | struct gpt_guid partition_guid; | |
766d5156 DB |
82 | uint64_t lba_start; |
83 | uint64_t lba_end; | |
84 | struct gpt_attr attr; | |
d45fa25d | 85 | uint16_t name[GPT_PART_NAME_LEN]; |
766d5156 DB |
86 | } __attribute__ ((packed)); |
87 | ||
88 | /* GPT header */ | |
89 | struct gpt_header { | |
90 | uint64_t signature; /* header identification */ | |
91 | uint32_t revision; /* header version */ | |
92 | uint32_t size; /* in bytes */ | |
93 | uint32_t crc32; /* header CRC checksum */ | |
94 | uint32_t reserved1; /* must be 0 */ | |
95 | uint64_t my_lba; /* LBA that contains this struct (LBA 1) */ | |
96 | uint64_t alternative_lba; /* backup GPT header */ | |
97 | uint64_t first_usable_lba; /* first usable logical block for partitions */ | |
98 | uint64_t last_usable_lba; /* last usable logical block for partitions */ | |
3f731001 | 99 | struct gpt_guid disk_guid; /* unique disk identifier */ |
766d5156 DB |
100 | uint64_t partition_entry_lba; /* stat LBA of the partition entry array */ |
101 | uint32_t npartition_entries; /* total partition entries - normally 128 */ | |
102 | uint32_t sizeof_partition_entry; /* bytes for each GUID pt */ | |
103 | uint32_t partition_entry_array_crc32; /* partition CRC checksum */ | |
104 | uint8_t reserved2[512 - 92]; /* must be 0 */ | |
105 | } __attribute__ ((packed)); | |
106 | ||
107 | struct gpt_record { | |
108 | uint8_t boot_indicator; /* unused by EFI, set to 0x80 for bootable */ | |
109 | uint8_t start_head; /* unused by EFI, pt start in CHS */ | |
110 | uint8_t start_sector; /* unused by EFI, pt start in CHS */ | |
111 | uint8_t start_track; | |
112 | uint8_t os_type; /* EFI and legacy non-EFI OS types */ | |
113 | uint8_t end_head; /* unused by EFI, pt end in CHS */ | |
114 | uint8_t end_sector; /* unused by EFI, pt end in CHS */ | |
115 | uint8_t end_track; /* unused by EFI, pt end in CHS */ | |
116 | uint32_t starting_lba; /* used by EFI - start addr of the on disk pt */ | |
117 | uint32_t size_in_lba; /* used by EFI - size of pt in LBA */ | |
118 | } __attribute__ ((packed)); | |
119 | ||
120 | /* Protected MBR and legacy MBR share same structure */ | |
121 | struct gpt_legacy_mbr { | |
122 | uint8_t boot_code[440]; | |
123 | uint32_t unique_mbr_signature; | |
124 | uint16_t unknown; | |
125 | struct gpt_record partition_record[4]; | |
126 | uint16_t signature; | |
127 | } __attribute__ ((packed)); | |
128 | ||
129 | /* | |
130 | * Here be dragons! | |
131 | * See: http://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs | |
132 | */ | |
133 | #define DEF_GUID(_u, _n) \ | |
134 | { \ | |
135 | .typestr = (_u), \ | |
136 | .name = (_n), \ | |
137 | } | |
138 | ||
139 | static struct fdisk_parttype gpt_parttypes[] = | |
140 | { | |
141 | /* Generic OS */ | |
142 | DEF_GUID("C12A7328-F81F-11D2-BA4B-00A0C93EC93B", N_("EFI System")), | |
143 | ||
144 | DEF_GUID("024DEE41-33E7-11D3-9D69-0008C781F39F", N_("MBR partition scheme")), | |
145 | /* Hah!IdontneedEFI */ | |
146 | DEF_GUID("21686148-6449-6E6F-744E-656564454649", N_("BIOS boot partition")), | |
147 | ||
148 | /* Windows */ | |
149 | DEF_GUID("E3C9E316-0B5C-4DB8-817D-F92DF00215AE", N_("Microsoft reserved")), | |
150 | DEF_GUID("EBD0A0A2-B9E5-4433-87C0-68B6B72699C7", N_("Microsoft basic data")), | |
151 | DEF_GUID("5808C8AA-7E8F-42E0-85D2-E1E90434CFB3", N_("Microsoft LDM metadata")), | |
152 | DEF_GUID("AF9B60A0-1431-4F62-BC68-3311714A69AD", N_("Microsoft LDM data")), | |
ef75bc88 | 153 | DEF_GUID("DE94BBA4-06D1-4D40-A16A-BFD50179D6AC", N_("Windows recovery evironment")), |
766d5156 DB |
154 | DEF_GUID("37AFFC90-EF7D-4E96-91C3-2D7AE055B174", N_("IBM General Parallel Fs")), |
155 | ||
156 | /* HP-UX */ | |
157 | DEF_GUID("75894C1E-3AEB-11D3-B7C1-7B03A0000000", N_("HP-UX data partition")), | |
158 | DEF_GUID("E2A1E728-32E3-11D6-A682-7B03A0000000", N_("HP-UX service partition")), | |
159 | ||
160 | /* Linux */ | |
161 | DEF_GUID("0FC63DAF-8483-4772-8E79-3D69D8477DE4", N_("Linux filesystem")), | |
162 | DEF_GUID("A19D880F-05FC-4D3B-A006-743F0F84911E", N_("Linux RAID")), | |
163 | DEF_GUID("0657FD6D-A4AB-43C4-84E5-0933C84B4F4F", N_("Linux swap")), | |
164 | DEF_GUID("E6D6D379-F507-44C2-A23C-238F2A3DF928", N_("Linux LVM")), | |
165 | DEF_GUID("8DA63339-0007-60C0-C436-083AC8230908", N_("Linux reserved")), | |
166 | ||
e9bf0935 | 167 | /* FreeBSD */ |
766d5156 DB |
168 | DEF_GUID("516E7CB4-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD data")), |
169 | DEF_GUID("83BD6B9D-7F41-11DC-BE0B-001560B84F0F", N_("FreeBSD boot")), | |
170 | DEF_GUID("516E7CB5-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD swap")), | |
171 | DEF_GUID("516E7CB6-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD UFS")), | |
172 | DEF_GUID("516E7CBA-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD ZFS")), | |
173 | DEF_GUID("516E7CB8-6ECF-11D6-8FF8-00022D09712B", N_("FreeBSD Vinum")), | |
174 | ||
175 | /* Apple OSX */ | |
176 | DEF_GUID("48465300-0000-11AA-AA11-00306543ECAC", N_("Apple HFS/HFS+")), | |
177 | DEF_GUID("55465300-0000-11AA-AA11-00306543ECAC", N_("Apple UFS")), | |
178 | DEF_GUID("52414944-0000-11AA-AA11-00306543ECAC", N_("Apple RAID")), | |
179 | DEF_GUID("52414944-5F4F-11AA-AA11-00306543ECAC", N_("Apple RAID offline")), | |
180 | DEF_GUID("426F6F74-0000-11AA-AA11-00306543ECAC", N_("Apple boot")), | |
181 | DEF_GUID("4C616265-6C00-11AA-AA11-00306543ECAC", N_("Apple label")), | |
182 | DEF_GUID("5265636F-7665-11AA-AA11-00306543ECAC", N_("Apple TV recovery")), | |
183 | DEF_GUID("53746F72-6167-11AA-AA11-00306543ECAC", N_("Apple Core storage")), | |
184 | ||
185 | /* Solaris */ | |
186 | DEF_GUID("6A82CB45-1DD2-11B2-99A6-080020736631", N_("Solaris boot")), | |
187 | DEF_GUID("6A85CF4D-1DD2-11B2-99A6-080020736631", N_("Solaris root")), | |
188 | /* same as Apple ZFS */ | |
189 | DEF_GUID("6A898CC3-1DD2-11B2-99A6-080020736631", N_("Solaris /usr & Apple ZFS")), | |
190 | DEF_GUID("6A87C46F-1DD2-11B2-99A6-080020736631", N_("Solaris swap")), | |
191 | DEF_GUID("6A8B642B-1DD2-11B2-99A6-080020736631", N_("Solaris backup")), | |
192 | DEF_GUID("6A8EF2E9-1DD2-11B2-99A6-080020736631", N_("Solaris /var")), | |
193 | DEF_GUID("6A90BA39-1DD2-11B2-99A6-080020736631", N_("Solaris /home")), | |
194 | DEF_GUID("6A9283A5-1DD2-11B2-99A6-080020736631", N_("Solaris alternate sector")), | |
195 | DEF_GUID("6A945A3B-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 1")), | |
196 | DEF_GUID("6A9630D1-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 2")), | |
197 | DEF_GUID("6A980767-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 3")), | |
198 | DEF_GUID("6A96237F-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 4")), | |
199 | DEF_GUID("6A8D2AC7-1DD2-11B2-99A6-080020736631", N_("Solaris reserved 5")), | |
200 | ||
201 | /* NetBSD */ | |
202 | DEF_GUID("49F48D32-B10E-11DC-B99B-0019D1879648", N_("NetBSD swap")), | |
203 | DEF_GUID("49F48D5A-B10E-11DC-B99B-0019D1879648", N_("NetBSD FFS")), | |
204 | DEF_GUID("49F48D82-B10E-11DC-B99B-0019D1879648", N_("NetBSD LFS")), | |
205 | DEF_GUID("2DB519C4-B10E-11DC-B99B-0019D1879648", N_("NetBSD concatenated")), | |
206 | DEF_GUID("2DB519EC-B10E-11DC-B99B-0019D1879648", N_("NetBSD encrypted")), | |
207 | DEF_GUID("49F48DAA-B10E-11DC-B99B-0019D1879648", N_("NetBSD RAID")), | |
208 | ||
209 | /* ChromeOS */ | |
210 | DEF_GUID("FE3A2A5D-4F32-41A7-B725-ACCC3285A309", N_("ChromeOS kernel")), | |
211 | DEF_GUID("3CB8E202-3B7E-47DD-8A3C-7FF2A13CFCEC", N_("ChromeOS root fs")), | |
212 | DEF_GUID("2E0A753D-9E48-43B0-8337-B15192CB1B5E", N_("ChromeOS reserved")), | |
213 | ||
214 | /* MidnightBSD */ | |
215 | DEF_GUID("85D5E45A-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD data")), | |
216 | DEF_GUID("85D5E45E-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD boot")), | |
217 | DEF_GUID("85D5E45B-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD swap")), | |
218 | DEF_GUID("0394Ef8B-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD UFS")), | |
219 | DEF_GUID("85D5E45D-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD ZFS")), | |
220 | DEF_GUID("85D5E45C-237C-11E1-B4B3-E89A8F7FC3A7", N_("MidnightBSD Vinum")), | |
221 | }; | |
222 | ||
d71ef5a4 | 223 | /* gpt_entry macros */ |
874aa9c3 KZ |
224 | #define gpt_partition_start(_e) le64_to_cpu((_e)->lba_start) |
225 | #define gpt_partition_end(_e) le64_to_cpu((_e)->lba_end) | |
226 | ||
d71ef5a4 KZ |
227 | /* |
228 | * in-memory fdisk GPT stuff | |
229 | */ | |
230 | struct fdisk_gpt_label { | |
231 | struct fdisk_label head; /* generic part */ | |
232 | ||
233 | /* gpt specific part */ | |
234 | struct gpt_header *pheader; /* primary header */ | |
235 | struct gpt_header *bheader; /* backup header */ | |
236 | struct gpt_entry *ents; /* entries (partitions) */ | |
237 | }; | |
238 | ||
239 | static void gpt_deinit(struct fdisk_label *lb); | |
240 | ||
9ffeb235 | 241 | static inline struct fdisk_gpt_label *self_label(struct fdisk_context *cxt) |
d71ef5a4 | 242 | { |
d71ef5a4 KZ |
243 | return (struct fdisk_gpt_label *) cxt->label; |
244 | } | |
245 | ||
874aa9c3 KZ |
246 | /* |
247 | * Returns the partition length, or 0 if end is before beginning. | |
248 | */ | |
249 | static uint64_t gpt_partition_size(const struct gpt_entry *e) | |
250 | { | |
251 | uint64_t start = gpt_partition_start(e); | |
252 | uint64_t end = gpt_partition_end(e); | |
253 | ||
254 | return start > end ? 0 : end - start + 1ULL; | |
255 | } | |
256 | ||
c0d14b09 KZ |
257 | #ifdef CONFIG_LIBFDISK_DEBUG |
258 | /* prints UUID in the real byte order! */ | |
259 | static void dbgprint_uuid(const char *mesg, struct gpt_guid *guid) | |
260 | { | |
261 | const unsigned char *uuid = (unsigned char *) guid; | |
262 | ||
263 | fprintf(stderr, "%s: " | |
264 | "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n", | |
265 | mesg, | |
266 | uuid[0], uuid[1], uuid[2], uuid[3], | |
267 | uuid[4], uuid[5], | |
268 | uuid[6], uuid[7], | |
269 | uuid[8], uuid[9], | |
270 | uuid[10], uuid[11], uuid[12], uuid[13], uuid[14],uuid[15]); | |
271 | } | |
272 | #endif | |
273 | ||
766d5156 DB |
274 | /* |
275 | * UUID is traditionally 16 byte big-endian array, except Intel EFI | |
276 | * specification where the UUID is a structure of little-endian fields. | |
277 | */ | |
278 | static void swap_efi_guid(struct gpt_guid *uid) | |
279 | { | |
280 | uid->time_low = swab32(uid->time_low); | |
281 | uid->time_mid = swab16(uid->time_mid); | |
282 | uid->time_hi_and_version = swab16(uid->time_hi_and_version); | |
5dbff4c0 KZ |
283 | } |
284 | ||
c0d14b09 | 285 | static int string_to_guid(const char *in, struct gpt_guid *guid) |
766d5156 | 286 | { |
c0d14b09 | 287 | if (uuid_parse(in, (unsigned char *) guid)) /* BE */ |
766d5156 | 288 | return -1; |
c0d14b09 | 289 | swap_efi_guid(guid); /* LE */ |
766d5156 DB |
290 | return 0; |
291 | } | |
292 | ||
c0d14b09 | 293 | static char *guid_to_string(struct gpt_guid *guid, char *out) |
766d5156 | 294 | { |
c0d14b09 KZ |
295 | struct gpt_guid u = *guid; /* LE */ |
296 | ||
297 | swap_efi_guid(&u); /* BE */ | |
298 | uuid_unparse_upper((unsigned char *) &u, out); | |
299 | ||
46667ba4 | 300 | return out; |
766d5156 DB |
301 | } |
302 | ||
303 | static const char *gpt_get_header_revstr(struct gpt_header *header) | |
304 | { | |
305 | if (!header) | |
306 | goto unknown; | |
307 | ||
308 | switch (header->revision) { | |
309 | case GPT_HEADER_REVISION_V1_02: | |
310 | return "1.2"; | |
311 | case GPT_HEADER_REVISION_V1_00: | |
312 | return "1.0"; | |
313 | case GPT_HEADER_REVISION_V0_99: | |
314 | return "0.99"; | |
315 | default: | |
316 | goto unknown; | |
317 | } | |
318 | ||
319 | unknown: | |
320 | return "unknown"; | |
321 | } | |
322 | ||
874aa9c3 | 323 | static inline int partition_unused(const struct gpt_entry *e) |
766d5156 | 324 | { |
d45fa25d | 325 | return !memcmp(&e->type, &GPT_UNUSED_ENTRY_GUID, |
766d5156 DB |
326 | sizeof(struct gpt_guid)); |
327 | } | |
328 | ||
3f731001 DB |
329 | /* |
330 | * Builds a clean new valid protective MBR - will wipe out any existing data. | |
331 | * Returns 0 on success, otherwise < 0 on error. | |
332 | */ | |
333 | static int gpt_mknew_pmbr(struct fdisk_context *cxt) | |
334 | { | |
335 | struct gpt_legacy_mbr *pmbr = NULL; | |
336 | ||
337 | if (!cxt || !cxt->firstsector) | |
338 | return -ENOSYS; | |
339 | ||
340 | fdisk_zeroize_firstsector(cxt); | |
341 | ||
342 | pmbr = (struct gpt_legacy_mbr *) cxt->firstsector; | |
343 | ||
344 | pmbr->signature = cpu_to_le16(MSDOS_MBR_SIGNATURE); | |
345 | pmbr->partition_record[0].os_type = EFI_PMBR_OSTYPE; | |
346 | pmbr->partition_record[0].start_sector = 1; | |
347 | pmbr->partition_record[0].end_head = 0xFE; | |
348 | pmbr->partition_record[0].end_sector = 0xFF; | |
349 | pmbr->partition_record[0].end_track = 0xFF; | |
350 | pmbr->partition_record[0].starting_lba = cpu_to_le32(1); | |
351 | pmbr->partition_record[0].size_in_lba = | |
352 | cpu_to_le32(min((uint32_t) cxt->total_sectors - 1, 0xFFFFFFFF)); | |
353 | ||
354 | return 0; | |
355 | } | |
356 | ||
357 | /* some universal differences between the headers */ | |
358 | static void gpt_mknew_header_common(struct fdisk_context *cxt, | |
359 | struct gpt_header *header, uint64_t lba) | |
360 | { | |
361 | if (!cxt || !header) | |
362 | return; | |
363 | ||
364 | header->my_lba = cpu_to_le64(lba); | |
365 | ||
366 | if (lba == GPT_PRIMARY_PARTITION_TABLE_LBA) { /* primary */ | |
367 | header->alternative_lba = cpu_to_le64(cxt->total_sectors - 1); | |
368 | header->partition_entry_lba = cpu_to_le64(2); | |
369 | } else { /* backup */ | |
370 | uint64_t esz = le32_to_cpu(header->npartition_entries) * sizeof(struct gpt_entry); | |
371 | uint64_t esects = (esz + cxt->sector_size - 1) / cxt->sector_size; | |
372 | ||
373 | header->alternative_lba = cpu_to_le64(GPT_PRIMARY_PARTITION_TABLE_LBA); | |
374 | header->partition_entry_lba = cpu_to_le64(cxt->total_sectors - 1 - esects); | |
375 | } | |
376 | } | |
377 | ||
378 | /* | |
379 | * Builds a new GPT header (at sector lba) from a backup header2. | |
380 | * If building a primary header, then backup is the secondary, and vice versa. | |
381 | * | |
382 | * Always pass a new (zeroized) header to build upon as we don't | |
383 | * explicitly zero-set some values such as CRCs and reserved. | |
384 | * | |
385 | * Returns 0 on success, otherwise < 0 on error. | |
386 | */ | |
387 | static int gpt_mknew_header_from_bkp(struct fdisk_context *cxt, | |
388 | struct gpt_header *header, | |
389 | uint64_t lba, | |
390 | struct gpt_header *header2) | |
391 | { | |
392 | if (!cxt || !header || !header2) | |
393 | return -ENOSYS; | |
394 | ||
395 | header->signature = header2->signature; | |
396 | header->revision = header2->revision; | |
397 | header->size = header2->size; | |
398 | header->npartition_entries = header2->npartition_entries; | |
399 | header->sizeof_partition_entry = header2->sizeof_partition_entry; | |
400 | header->first_usable_lba = header2->first_usable_lba; | |
401 | header->last_usable_lba = header2->last_usable_lba; | |
402 | ||
403 | memcpy(&header->disk_guid, | |
404 | &header2->disk_guid, sizeof(header2->disk_guid)); | |
405 | gpt_mknew_header_common(cxt, header, lba); | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | /* | |
411 | * Builds a clean new GPT header (currently under revision 1.0). | |
412 | * | |
413 | * Always pass a new (zeroized) header to build upon as we don't | |
414 | * explicitly zero-set some values such as CRCs and reserved. | |
415 | * | |
416 | * Returns 0 on success, otherwise < 0 on error. | |
417 | */ | |
418 | static int gpt_mknew_header(struct fdisk_context *cxt, | |
419 | struct gpt_header *header, uint64_t lba) | |
420 | { | |
b4184690 | 421 | uint64_t esz = 0, first, last; |
3f731001 DB |
422 | |
423 | if (!cxt || !header) | |
424 | return -ENOSYS; | |
425 | ||
426 | esz = sizeof(struct gpt_entry) * GPT_NPARTITIONS / cxt->sector_size; | |
427 | ||
428 | header->signature = cpu_to_le64(GPT_HEADER_SIGNATURE); | |
429 | header->revision = cpu_to_le32(GPT_HEADER_REVISION_V1_00); | |
430 | header->size = cpu_to_le32(sizeof(struct gpt_header)); | |
431 | ||
432 | /* | |
433 | * 128 partitions is the default. It can go behond this, however, | |
434 | * we're creating a de facto header here, so no funny business. | |
435 | */ | |
436 | header->npartition_entries = cpu_to_le32(GPT_NPARTITIONS); | |
437 | header->sizeof_partition_entry = cpu_to_le32(sizeof(struct gpt_entry)); | |
b4184690 KZ |
438 | |
439 | last = cxt->total_sectors - 2 - esz; | |
440 | first = esz + 2; | |
441 | ||
442 | if (first < cxt->first_lba && cxt->first_lba < last) | |
443 | /* Align according to topology */ | |
444 | first = cxt->first_lba; | |
445 | ||
446 | header->first_usable_lba = cpu_to_le64(first); | |
447 | header->last_usable_lba = cpu_to_le64(last); | |
3f731001 DB |
448 | |
449 | gpt_mknew_header_common(cxt, header, lba); | |
450 | uuid_generate_random((unsigned char *) &header->disk_guid); | |
451 | swap_efi_guid(&header->disk_guid); | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
766d5156 DB |
456 | /* |
457 | * Checks if there is a valid protective MBR partition table. | |
458 | * Returns 0 if it is invalid or failure. Otherwise, return | |
459 | * GPT_MBR_PROTECTIVE or GPT_MBR_HYBRID, depeding on the detection. | |
460 | */ | |
461 | static int valid_pmbr(struct fdisk_context *cxt) | |
462 | { | |
879fadf1 | 463 | int i, part = 0, ret = 0; /* invalid by default */ |
766d5156 DB |
464 | struct gpt_legacy_mbr *pmbr = NULL; |
465 | ||
466 | if (!cxt->firstsector) | |
467 | goto done; | |
468 | ||
469 | pmbr = (struct gpt_legacy_mbr *) cxt->firstsector; | |
470 | ||
f67c524e | 471 | if (le16_to_cpu(pmbr->signature) != MSDOS_MBR_SIGNATURE) |
766d5156 DB |
472 | goto done; |
473 | ||
474 | /* LBA of the GPT partition header */ | |
475 | if (pmbr->partition_record[0].starting_lba != | |
476 | cpu_to_le32(GPT_PRIMARY_PARTITION_TABLE_LBA)) | |
477 | goto done; | |
478 | ||
479 | /* seems like a valid MBR was found, check DOS primary partitions */ | |
f67c524e | 480 | for (i = 0; i < 4; i++) { |
766d5156 DB |
481 | if (pmbr->partition_record[i].os_type == EFI_PMBR_OSTYPE) { |
482 | /* | |
483 | * Ok, we at least know that there's a protective MBR, | |
484 | * now check if there are other partition types for | |
485 | * hybrid MBR. | |
486 | */ | |
879fadf1 | 487 | part = i; |
766d5156 DB |
488 | ret = GPT_MBR_PROTECTIVE; |
489 | goto check_hybrid; | |
490 | } | |
f67c524e | 491 | } |
766d5156 DB |
492 | check_hybrid: |
493 | if (ret != GPT_MBR_PROTECTIVE) | |
494 | goto done; | |
f67c524e | 495 | for (i = 0 ; i < 4; i++) { |
766d5156 DB |
496 | if ((pmbr->partition_record[i].os_type != EFI_PMBR_OSTYPE) && |
497 | (pmbr->partition_record[i].os_type != 0x00)) | |
498 | ret = GPT_MBR_HYBRID; | |
f67c524e | 499 | } |
766d5156 DB |
500 | |
501 | /* | |
502 | * Protective MBRs take up the lesser of the whole disk | |
503 | * or 2 TiB (32bit LBA), ignoring the rest of the disk. | |
504 | * | |
505 | * Hybrid MBRs do not necessarily comply with this. | |
506 | */ | |
f67c524e | 507 | if (ret == GPT_MBR_PROTECTIVE) { |
879fadf1 | 508 | if (le32_to_cpu(pmbr->partition_record[part].size_in_lba) != |
f67c524e | 509 | min((uint32_t) cxt->total_sectors - 1, 0xFFFFFFFF)) |
766d5156 | 510 | ret = 0; |
f67c524e | 511 | } |
766d5156 DB |
512 | done: |
513 | return ret; | |
514 | } | |
515 | ||
516 | static uint64_t last_lba(struct fdisk_context *cxt) | |
5dbff4c0 | 517 | { |
5dbff4c0 KZ |
518 | struct stat s; |
519 | ||
766d5156 DB |
520 | memset(&s, 0, sizeof(s)); |
521 | if (fstat(cxt->dev_fd, &s) == -1) { | |
83df5feb | 522 | fdisk_warn(cxt, _("gpt: stat() failed")); |
5dbff4c0 KZ |
523 | return 0; |
524 | } | |
766d5156 | 525 | |
5dbff4c0 | 526 | if (S_ISBLK(s.st_mode)) |
766d5156 DB |
527 | return cxt->total_sectors - 1; |
528 | else if (S_ISREG(s.st_mode)) { | |
529 | uint64_t sectors = s.st_size >> cxt->sector_size; | |
530 | return (sectors / cxt->sector_size) - 1ULL; | |
83df5feb KZ |
531 | } else |
532 | fdisk_warnx(cxt, _("gpt: cannot handle files with mode %o"), s.st_mode); | |
766d5156 | 533 | return 0; |
5dbff4c0 KZ |
534 | } |
535 | ||
766d5156 DB |
536 | static ssize_t read_lba(struct fdisk_context *cxt, uint64_t lba, |
537 | void *buffer, const size_t bytes) | |
5dbff4c0 | 538 | { |
766d5156 | 539 | off_t offset = lba * cxt->sector_size; |
5dbff4c0 | 540 | |
bbe8e6a9 KZ |
541 | if (lseek(cxt->dev_fd, offset, SEEK_SET) == (off_t) -1) |
542 | return -1; | |
543 | return read(cxt->dev_fd, buffer, bytes) != bytes; | |
5dbff4c0 KZ |
544 | } |
545 | ||
766d5156 DB |
546 | |
547 | /* Returns the GPT entry array */ | |
be5f8061 | 548 | static struct gpt_entry *gpt_read_entries(struct fdisk_context *cxt, |
d71ef5a4 | 549 | struct gpt_header *header) |
5dbff4c0 | 550 | { |
d71ef5a4 KZ |
551 | ssize_t sz; |
552 | struct gpt_entry *ret = NULL; | |
553 | off_t offset; | |
554 | ||
555 | assert(cxt); | |
556 | assert(header); | |
557 | ||
558 | sz = le32_to_cpu(header->npartition_entries) * | |
559 | le32_to_cpu(header->sizeof_partition_entry); | |
560 | ||
46667ba4 | 561 | ret = calloc(1, sz); |
d71ef5a4 KZ |
562 | if (!ret) |
563 | return NULL; | |
564 | offset = le64_to_cpu(header->partition_entry_lba) * | |
766d5156 DB |
565 | cxt->sector_size; |
566 | ||
567 | if (offset != lseek(cxt->dev_fd, offset, SEEK_SET)) | |
d71ef5a4 | 568 | goto fail; |
766d5156 | 569 | if (sz != read(cxt->dev_fd, ret, sz)) |
d71ef5a4 | 570 | goto fail; |
766d5156 DB |
571 | |
572 | return ret; | |
d71ef5a4 KZ |
573 | |
574 | fail: | |
575 | free(ret); | |
576 | return NULL; | |
766d5156 DB |
577 | } |
578 | ||
579 | static inline uint32_t count_crc32(const unsigned char *buf, size_t len) | |
580 | { | |
581 | return (crc32(~0L, buf, len) ^ ~0L); | |
582 | } | |
583 | ||
584 | /* | |
585 | * Recompute header and partition array 32bit CRC checksums. | |
586 | * This function does not fail - if there's corruption, then it | |
587 | * will be reported when checksuming it again (ie: probing or verify). | |
588 | */ | |
d71ef5a4 | 589 | static void gpt_recompute_crc(struct gpt_header *header, struct gpt_entry *ents) |
766d5156 DB |
590 | { |
591 | uint32_t crc = 0; | |
592 | size_t entry_sz = 0; | |
593 | ||
594 | if (!header) | |
595 | return; | |
596 | ||
597 | /* header CRC */ | |
598 | header->crc32 = 0; | |
599 | crc = count_crc32((unsigned char *) header, le32_to_cpu(header->size)); | |
600 | header->crc32 = cpu_to_le32(crc); | |
601 | ||
602 | /* partition entry array CRC */ | |
603 | header->partition_entry_array_crc32 = 0; | |
604 | entry_sz = le32_to_cpu(header->npartition_entries) * | |
605 | le32_to_cpu(header->sizeof_partition_entry); | |
606 | ||
d71ef5a4 | 607 | crc = count_crc32((unsigned char *) ents, entry_sz); |
766d5156 DB |
608 | header->partition_entry_array_crc32 = cpu_to_le32(crc); |
609 | } | |
610 | ||
611 | /* | |
612 | * Compute the 32bit CRC checksum of the partition table header. | |
613 | * Returns 1 if it is valid, otherwise 0. | |
614 | */ | |
d71ef5a4 | 615 | static int gpt_check_header_crc(struct gpt_header *header, struct gpt_entry *ents) |
766d5156 DB |
616 | { |
617 | uint32_t crc, orgcrc = le32_to_cpu(header->crc32); | |
618 | ||
619 | header->crc32 = 0; | |
620 | crc = count_crc32((unsigned char *) header, le32_to_cpu(header->size)); | |
621 | header->crc32 = cpu_to_le32(orgcrc); | |
622 | ||
d71ef5a4 KZ |
623 | if (crc == le32_to_cpu(header->crc32)) |
624 | return 1; | |
625 | ||
766d5156 DB |
626 | /* |
627 | * If we have checksum mismatch it may be due to stale data, | |
628 | * like a partition being added or deleted. Recompute the CRC again | |
629 | * and make sure this is not the case. | |
630 | */ | |
d71ef5a4 | 631 | if (ents) { |
766d5156 DB |
632 | gpt_recompute_crc(header, ents); |
633 | orgcrc = le32_to_cpu(header->crc32); | |
634 | header->crc32 = 0; | |
635 | crc = count_crc32((unsigned char *) header, le32_to_cpu(header->size)); | |
636 | header->crc32 = cpu_to_le32(orgcrc); | |
637 | ||
638 | return crc == le32_to_cpu(header->crc32); | |
d71ef5a4 KZ |
639 | } |
640 | ||
641 | return 0; | |
766d5156 DB |
642 | } |
643 | ||
644 | /* | |
645 | * It initializes the partition entry array. | |
646 | * Returns 1 if the checksum is valid, otherwise 0. | |
647 | */ | |
d71ef5a4 KZ |
648 | static int gpt_check_entryarr_crc(struct gpt_header *header, |
649 | struct gpt_entry *ents) | |
766d5156 DB |
650 | { |
651 | int ret = 0; | |
652 | ssize_t entry_sz; | |
653 | uint32_t crc; | |
654 | ||
d71ef5a4 | 655 | if (!header || !ents) |
766d5156 DB |
656 | goto done; |
657 | ||
658 | entry_sz = le32_to_cpu(header->npartition_entries) * | |
659 | le32_to_cpu(header->sizeof_partition_entry); | |
660 | ||
661 | if (!entry_sz) | |
662 | goto done; | |
663 | ||
766d5156 DB |
664 | crc = count_crc32((unsigned char *) ents, entry_sz); |
665 | ret = (crc == le32_to_cpu(header->partition_entry_array_crc32)); | |
666 | done: | |
667 | return ret; | |
668 | } | |
669 | ||
670 | static int gpt_check_lba_sanity(struct fdisk_context *cxt, struct gpt_header *header) | |
671 | { | |
672 | int ret = 0; | |
673 | uint64_t lu, fu, lastlba = last_lba(cxt); | |
674 | ||
675 | fu = le64_to_cpu(header->first_usable_lba); | |
676 | lu = le64_to_cpu(header->last_usable_lba); | |
677 | ||
678 | /* check if first and last usable LBA make sense */ | |
679 | if (lu < fu) { | |
680 | DBG(LABEL, dbgprint("error: header last LBA is before first LBA")); | |
681 | goto done; | |
5dbff4c0 | 682 | } |
766d5156 DB |
683 | |
684 | /* check if first and last usable LBAs with the disk's last LBA */ | |
685 | if (fu > lastlba || lu > lastlba) { | |
686 | DBG(LABEL, dbgprint("error: header LBAs are after the disk's last LBA")); | |
687 | goto done; | |
688 | } | |
689 | ||
690 | /* the header has to be outside usable range */ | |
691 | if (fu < GPT_PRIMARY_PARTITION_TABLE_LBA && | |
692 | GPT_PRIMARY_PARTITION_TABLE_LBA < lu) { | |
693 | DBG(LABEL, dbgprint("error: header outside of usable range")); | |
694 | goto done; | |
695 | } | |
696 | ||
697 | ret = 1; /* sane */ | |
698 | done: | |
699 | return ret; | |
700 | } | |
701 | ||
702 | /* Check if there is a valid header signature */ | |
703 | static int gpt_check_signature(struct gpt_header *header) | |
704 | { | |
705 | return header->signature == cpu_to_le64(GPT_HEADER_SIGNATURE); | |
706 | } | |
707 | ||
708 | /* | |
709 | * Return the specified GPT Header, or NULL upon failure/invalid. | |
710 | * Note that all tests must pass to ensure a valid header, | |
711 | * we do not rely on only testing the signature for a valid probe. | |
712 | */ | |
d71ef5a4 KZ |
713 | static struct gpt_header *gpt_read_header(struct fdisk_context *cxt, |
714 | uint64_t lba, | |
715 | struct gpt_entry **_ents) | |
766d5156 DB |
716 | { |
717 | struct gpt_header *header = NULL; | |
d71ef5a4 | 718 | struct gpt_entry *ents = NULL; |
e9bf0935 | 719 | uint32_t hsz; |
766d5156 DB |
720 | |
721 | if (!cxt) | |
722 | return NULL; | |
723 | ||
46667ba4 KZ |
724 | header = calloc(1, sizeof(*header)); |
725 | if (!header) | |
726 | return NULL; | |
766d5156 | 727 | |
d71ef5a4 | 728 | /* read and verify header */ |
bbe8e6a9 | 729 | if (read_lba(cxt, lba, header, sizeof(struct gpt_header)) != 0) |
766d5156 DB |
730 | goto invalid; |
731 | ||
732 | if (!gpt_check_signature(header)) | |
733 | goto invalid; | |
734 | ||
d71ef5a4 KZ |
735 | if (!gpt_check_header_crc(header, NULL)) |
736 | goto invalid; | |
737 | ||
738 | /* read and verify entries */ | |
739 | ents = gpt_read_entries(cxt, header); | |
740 | if (!ents) | |
741 | goto invalid; | |
742 | ||
743 | if (!gpt_check_entryarr_crc(header, ents)) | |
766d5156 DB |
744 | goto invalid; |
745 | ||
746 | if (!gpt_check_lba_sanity(cxt, header)) | |
747 | goto invalid; | |
748 | ||
749 | /* valid header must be at MyLBA */ | |
750 | if (le64_to_cpu(header->my_lba) != lba) | |
751 | goto invalid; | |
752 | ||
e9bf0935 DB |
753 | /* make sure header size is between 92 and sector size bytes */ |
754 | hsz = le32_to_cpu(header->size); | |
755 | if (hsz < GPT_HEADER_MINSZ || hsz > cxt->sector_size) | |
756 | goto invalid; | |
757 | ||
d71ef5a4 KZ |
758 | if (_ents) |
759 | *_ents = ents; | |
760 | else | |
761 | free(ents); | |
762 | ||
766d5156 DB |
763 | return header; |
764 | invalid: | |
765 | free(header); | |
d71ef5a4 | 766 | free(ents); |
766d5156 DB |
767 | return NULL; |
768 | } | |
769 | ||
766d5156 DB |
770 | /* |
771 | * Returns the number of partitions that are in use. | |
772 | */ | |
130820a8 | 773 | static unsigned partitions_in_use(struct gpt_header *header, struct gpt_entry *e) |
766d5156 DB |
774 | { |
775 | uint32_t i, used = 0; | |
776 | ||
777 | if (!header || ! e) | |
778 | return 0; | |
779 | ||
780 | for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) | |
874aa9c3 | 781 | if (!partition_unused(&e[i])) |
766d5156 DB |
782 | used++; |
783 | return used; | |
784 | } | |
785 | ||
766d5156 DB |
786 | |
787 | /* | |
788 | * Check if a partition is too big for the disk (sectors). | |
789 | * Returns the faulting partition number, otherwise 0. | |
790 | */ | |
83df5feb | 791 | static uint32_t partition_check_too_big(struct gpt_header *header, |
766d5156 DB |
792 | struct gpt_entry *e, uint64_t sectors) |
793 | { | |
794 | uint32_t i; | |
795 | ||
796 | for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) { | |
874aa9c3 | 797 | if (partition_unused(&e[i])) |
766d5156 | 798 | continue; |
874aa9c3 | 799 | if (gpt_partition_end(&e[i]) >= sectors) |
766d5156 | 800 | return i + 1; |
5dbff4c0 | 801 | } |
766d5156 DB |
802 | |
803 | return 0; | |
5dbff4c0 KZ |
804 | } |
805 | ||
766d5156 DB |
806 | /* |
807 | * Check if a partition ends before it begins | |
808 | * Returns the faulting partition number, otherwise 0. | |
5dbff4c0 | 809 | */ |
83df5feb | 810 | static uint32_t partition_start_after_end(struct gpt_header *header, struct gpt_entry *e) |
5dbff4c0 | 811 | { |
766d5156 | 812 | uint32_t i; |
5dbff4c0 | 813 | |
766d5156 | 814 | for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) { |
874aa9c3 | 815 | if (partition_unused(&e[i])) |
766d5156 | 816 | continue; |
874aa9c3 | 817 | if (gpt_partition_start(&e[i]) > gpt_partition_end(&e[i])) |
766d5156 | 818 | return i + 1; |
5dbff4c0 | 819 | } |
766d5156 DB |
820 | |
821 | return 0; | |
5dbff4c0 KZ |
822 | } |
823 | ||
766d5156 DB |
824 | /* |
825 | * Check if partition e1 overlaps with partition e2 | |
826 | */ | |
874aa9c3 | 827 | static inline int partition_overlap(struct gpt_entry *e1, struct gpt_entry *e2) |
5dbff4c0 | 828 | { |
874aa9c3 KZ |
829 | uint64_t start1 = gpt_partition_start(e1); |
830 | uint64_t end1 = gpt_partition_end(e1); | |
831 | uint64_t start2 = gpt_partition_start(e2); | |
832 | uint64_t end2 = gpt_partition_end(e2); | |
833 | ||
834 | return (start1 && start2 && (start1 <= end2) != (end1 < start2)); | |
766d5156 DB |
835 | } |
836 | ||
837 | /* | |
838 | * Find any paritions that overlap. | |
839 | */ | |
83df5feb | 840 | static uint32_t partition_check_overlaps(struct gpt_header *header, struct gpt_entry *e) |
766d5156 DB |
841 | { |
842 | uint32_t i, j; | |
843 | ||
844 | for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) | |
845 | for (j = 0; j < i; j++) { | |
874aa9c3 KZ |
846 | if (partition_unused(&e[i]) || |
847 | partition_unused(&e[j])) | |
766d5156 | 848 | continue; |
c15aec86 KZ |
849 | if (partition_overlap(&e[i], &e[j])) { |
850 | DBG(LABEL, dbgprint("GPT partitions overlap detected [%u vs. %u]", i, j)); | |
766d5156 | 851 | return i + 1; |
c15aec86 | 852 | } |
766d5156 DB |
853 | } |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
858 | /* | |
859 | * Find the first available block after the starting point; returns 0 if | |
860 | * there are no available blocks left, or error. From gdisk. | |
861 | */ | |
862 | static uint64_t find_first_available(struct gpt_header *header, | |
863 | struct gpt_entry *e, uint64_t start) | |
864 | { | |
865 | uint64_t first; | |
866 | uint32_t i, first_moved = 0; | |
867 | ||
602ebe7d KZ |
868 | uint64_t fu, lu; |
869 | ||
766d5156 | 870 | if (!header || !e) |
5dbff4c0 | 871 | return 0; |
766d5156 | 872 | |
602ebe7d KZ |
873 | fu = le64_to_cpu(header->first_usable_lba); |
874 | lu = le64_to_cpu(header->last_usable_lba); | |
875 | ||
766d5156 DB |
876 | /* |
877 | * Begin from the specified starting point or from the first usable | |
878 | * LBA, whichever is greater... | |
879 | */ | |
602ebe7d | 880 | first = start < fu ? fu : start; |
766d5156 DB |
881 | |
882 | /* | |
883 | * Now search through all partitions; if first is within an | |
884 | * existing partition, move it to the next sector after that | |
885 | * partition and repeat. If first was moved, set firstMoved | |
886 | * flag; repeat until firstMoved is not set, so as to catch | |
887 | * cases where partitions are out of sequential order.... | |
888 | */ | |
889 | do { | |
890 | first_moved = 0; | |
891 | for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) { | |
874aa9c3 | 892 | if (partition_unused(&e[i])) |
766d5156 | 893 | continue; |
874aa9c3 | 894 | if (first < gpt_partition_start(&e[i])) |
766d5156 | 895 | continue; |
874aa9c3 KZ |
896 | if (first <= gpt_partition_end(&e[i])) { |
897 | first = gpt_partition_end(&e[i]) + 1; | |
766d5156 DB |
898 | first_moved = 1; |
899 | } | |
900 | } | |
901 | } while (first_moved == 1); | |
902 | ||
602ebe7d | 903 | if (first > lu) |
766d5156 DB |
904 | first = 0; |
905 | ||
906 | return first; | |
5dbff4c0 KZ |
907 | } |
908 | ||
766d5156 DB |
909 | |
910 | /* Returns last available sector in the free space pointed to by start. From gdisk. */ | |
911 | static uint64_t find_last_free(struct gpt_header *header, | |
912 | struct gpt_entry *e, uint64_t start) | |
5dbff4c0 | 913 | { |
766d5156 DB |
914 | uint32_t i; |
915 | uint64_t nearest_start; | |
916 | ||
917 | if (!header || !e) | |
918 | return 0; | |
919 | ||
602ebe7d KZ |
920 | nearest_start = le64_to_cpu(header->last_usable_lba); |
921 | ||
766d5156 | 922 | for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) { |
602ebe7d KZ |
923 | uint64_t ps = gpt_partition_start(&e[i]); |
924 | ||
925 | if (nearest_start > ps && ps > start) | |
926 | nearest_start = ps - 1; | |
5dbff4c0 | 927 | } |
766d5156 DB |
928 | |
929 | return nearest_start; | |
5dbff4c0 | 930 | } |
766d5156 DB |
931 | |
932 | /* Returns the last free sector on the disk. From gdisk. */ | |
933 | static uint64_t find_last_free_sector(struct gpt_header *header, | |
934 | struct gpt_entry *e) | |
935 | { | |
936 | uint32_t i, last_moved; | |
937 | uint64_t last = 0; | |
938 | ||
939 | if (!header || !e) | |
940 | goto done; | |
941 | ||
942 | /* start by assuming the last usable LBA is available */ | |
602ebe7d | 943 | last = le64_to_cpu(header->last_usable_lba); |
766d5156 DB |
944 | do { |
945 | last_moved = 0; | |
946 | for (i = 0; i < le32_to_cpu(header->npartition_entries); i++) { | |
874aa9c3 KZ |
947 | if ((last >= gpt_partition_start(&e[i])) && |
948 | (last <= gpt_partition_end(&e[i]))) { | |
949 | last = gpt_partition_start(&e[i]) - 1; | |
766d5156 DB |
950 | last_moved = 1; |
951 | } | |
952 | } | |
953 | } while (last_moved == 1); | |
954 | done: | |
955 | return last; | |
956 | } | |
957 | ||
958 | /* | |
959 | * Finds the first available sector in the largest block of unallocated | |
960 | * space on the disk. Returns 0 if there are no available blocks left. | |
961 | * From gdisk. | |
962 | */ | |
963 | static uint64_t find_first_in_largest(struct gpt_header *header, struct gpt_entry *e) | |
964 | { | |
965 | uint64_t start = 0, first_sect, last_sect; | |
966 | uint64_t segment_size, selected_size = 0, selected_segment = 0; | |
967 | ||
968 | if (!header || !e) | |
969 | goto done; | |
970 | ||
971 | do { | |
972 | first_sect = find_first_available(header, e, start); | |
973 | if (first_sect != 0) { | |
974 | last_sect = find_last_free(header, e, first_sect); | |
975 | segment_size = last_sect - first_sect + 1; | |
976 | ||
977 | if (segment_size > selected_size) { | |
978 | selected_size = segment_size; | |
979 | selected_segment = first_sect; | |
980 | } | |
981 | start = last_sect + 1; | |
982 | } | |
983 | } while (first_sect != 0); | |
984 | ||
985 | done: | |
986 | return selected_segment; | |
987 | } | |
988 | ||
989 | /* | |
990 | * Find the total number of free sectors, the number of segments in which | |
991 | * they reside, and the size of the largest of those segments. From gdisk. | |
992 | */ | |
993 | static uint64_t get_free_sectors(struct fdisk_context *cxt, struct gpt_header *header, | |
994 | struct gpt_entry *e, uint32_t *nsegments, | |
995 | uint64_t *largest_segment) | |
996 | { | |
997 | uint32_t num = 0; | |
998 | uint64_t first_sect, last_sect; | |
999 | uint64_t largest_seg = 0, segment_sz; | |
1000 | uint64_t totfound = 0, start = 0; /* starting point for each search */ | |
1001 | ||
1002 | if (!cxt->total_sectors) | |
1003 | goto done; | |
1004 | ||
1005 | do { | |
1006 | first_sect = find_first_available(header, e, start); | |
1007 | if (first_sect) { | |
1008 | last_sect = find_last_free(header, e, first_sect); | |
1009 | segment_sz = last_sect - first_sect + 1; | |
1010 | ||
1011 | if (segment_sz > largest_seg) | |
1012 | largest_seg = segment_sz; | |
1013 | totfound += segment_sz; | |
1014 | num++; | |
1015 | start = last_sect + 1; | |
1016 | } | |
1017 | } while (first_sect); | |
1018 | ||
1019 | done: | |
512a430f KZ |
1020 | if (nsegments) |
1021 | *nsegments = num; | |
1022 | if (largest_segment) | |
1023 | *largest_segment = largest_seg; | |
766d5156 DB |
1024 | |
1025 | return totfound; | |
1026 | } | |
1027 | ||
9ffeb235 | 1028 | static int gpt_probe_label(struct fdisk_context *cxt) |
766d5156 DB |
1029 | { |
1030 | int mbr_type; | |
9ffeb235 | 1031 | struct fdisk_gpt_label *gpt; |
766d5156 | 1032 | |
9ffeb235 KZ |
1033 | assert(cxt); |
1034 | assert(cxt->label); | |
1035 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1036 | ||
1037 | gpt = self_label(cxt); | |
766d5156 DB |
1038 | |
1039 | mbr_type = valid_pmbr(cxt); | |
1040 | if (!mbr_type) | |
1041 | goto failed; | |
1042 | ||
1043 | DBG(LABEL, dbgprint("found a %s MBR", mbr_type == GPT_MBR_PROTECTIVE ? | |
1044 | "protective" : "hybrid")); | |
1045 | ||
d71ef5a4 KZ |
1046 | /* primary header */ |
1047 | gpt->pheader = gpt_read_header(cxt, GPT_PRIMARY_PARTITION_TABLE_LBA, | |
1048 | &gpt->ents); | |
766d5156 DB |
1049 | |
1050 | /* | |
1051 | * TODO: If the primary GPT is corrupt, we must check the last LBA of the | |
1052 | * device to see if it has a valid GPT Header and point to a valid GPT | |
1053 | * Partition Entry Array. | |
1054 | * If it points to a valid GPT Partition Entry Array, then software should | |
1055 | * restore the primary GPT if allowed by platform policy settings. | |
1056 | * | |
1057 | * For now we just abort GPT probing! | |
1058 | */ | |
d71ef5a4 | 1059 | if (!gpt->pheader || !gpt->ents) |
766d5156 DB |
1060 | goto failed; |
1061 | ||
1062 | /* OK, probing passed, now initialize backup header and fdisk variables. */ | |
d71ef5a4 KZ |
1063 | gpt->bheader = gpt_read_header(cxt, last_lba(cxt), NULL); |
1064 | ||
9ffeb235 KZ |
1065 | cxt->label->nparts_max = le32_to_cpu(gpt->pheader->npartition_entries); |
1066 | cxt->label->nparts_cur = partitions_in_use(gpt->pheader, gpt->ents); | |
9fcd49d5 | 1067 | |
83df5feb KZ |
1068 | fdisk_warnx(cxt, _("WARNING: fdisk GPT support is currently new, and therefore " |
1069 | "in an experimental phase. Use at your own discretion.")); | |
766d5156 DB |
1070 | |
1071 | return 1; | |
1072 | failed: | |
4e0e8253 | 1073 | DBG(LABEL, dbgprint("GPT probe failed")); |
9ffeb235 | 1074 | gpt_deinit(cxt->label); |
766d5156 DB |
1075 | return 0; |
1076 | } | |
1077 | ||
1078 | /* | |
1079 | * Stolen from libblkid - can be removed once partition semantics | |
1080 | * are added to the fdisk API. | |
1081 | */ | |
1082 | static char *encode_to_utf8(unsigned char *src, size_t count) | |
1083 | { | |
1084 | uint16_t c; | |
d06f321d | 1085 | char *dest; |
766d5156 | 1086 | size_t i, j, len = count; |
3f731001 | 1087 | |
d06f321d KZ |
1088 | dest = calloc(1, count); |
1089 | if (!dest) | |
1090 | return NULL; | |
766d5156 DB |
1091 | |
1092 | for (j = i = 0; i + 2 <= count; i += 2) { | |
1093 | /* always little endian */ | |
1094 | c = (src[i+1] << 8) | src[i]; | |
1095 | if (c == 0) { | |
1096 | dest[j] = '\0'; | |
1097 | break; | |
1098 | } else if (c < 0x80) { | |
1099 | if (j+1 >= len) | |
1100 | break; | |
1101 | dest[j++] = (uint8_t) c; | |
1102 | } else if (c < 0x800) { | |
1103 | if (j+2 >= len) | |
1104 | break; | |
1105 | dest[j++] = (uint8_t) (0xc0 | (c >> 6)); | |
1106 | dest[j++] = (uint8_t) (0x80 | (c & 0x3f)); | |
1107 | } else { | |
1108 | if (j+3 >= len) | |
1109 | break; | |
1110 | dest[j++] = (uint8_t) (0xe0 | (c >> 12)); | |
1111 | dest[j++] = (uint8_t) (0x80 | ((c >> 6) & 0x3f)); | |
1112 | dest[j++] = (uint8_t) (0x80 | (c & 0x3f)); | |
1113 | } | |
1114 | } | |
1115 | dest[j] = '\0'; | |
1116 | ||
1117 | return dest; | |
1118 | } | |
1119 | ||
1120 | /* | |
1121 | * List label partitions. | |
1122 | * This function must currently exist to comply with standard fdisk | |
1123 | * requirements, but once partition semantics are added to the fdisk | |
1124 | * API it can be removed for custom implementation (see gpt_label struct). | |
1125 | */ | |
3c5fb475 | 1126 | static int gpt_list_disklabel(struct fdisk_context *cxt) |
766d5156 | 1127 | { |
b1920e0b | 1128 | int rc, trunc = TT_FL_TRUNC; |
766d5156 | 1129 | uint32_t i; |
9ffeb235 | 1130 | struct fdisk_gpt_label *gpt; |
76b3b13d | 1131 | struct gpt_header *h; |
9ffeb235 KZ |
1132 | uint64_t fu; |
1133 | uint64_t lu; | |
d9948c37 | 1134 | struct tt *tb = NULL; |
9ffeb235 KZ |
1135 | |
1136 | assert(cxt); | |
1137 | assert(cxt->label); | |
1138 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1139 | ||
1140 | gpt = self_label(cxt); | |
76b3b13d | 1141 | h = gpt->pheader; |
9ffeb235 KZ |
1142 | fu = le64_to_cpu(gpt->pheader->first_usable_lba); |
1143 | lu = le64_to_cpu(gpt->pheader->last_usable_lba); | |
766d5156 | 1144 | |
d9948c37 KZ |
1145 | tb = tt_new_table(TT_FL_FREEDATA); |
1146 | if (!tb) | |
3c5fb475 KZ |
1147 | return -ENOMEM; |
1148 | ||
b1920e0b | 1149 | /* don't trunc anything in expert mode */ |
76b3b13d | 1150 | if (fdisk_context_display_details(cxt)) { |
b1920e0b | 1151 | trunc = 0; |
76b3b13d KZ |
1152 | fdisk_info(cxt, _("First LBA: %ju"), h->first_usable_lba); |
1153 | fdisk_info(cxt, _("Last LBA: %ju"), h->last_usable_lba); | |
1154 | fdisk_info(cxt, _("Alternative LBA: %ju"), h->alternative_lba); | |
1155 | fdisk_info(cxt, _("Partitions entries LBA: %ju"), h->partition_entry_lba); | |
1156 | fdisk_info(cxt, _("Allocated partition entries: %ju"), h->npartition_entries); | |
1157 | } | |
b1920e0b | 1158 | tt_define_column(tb, _("Device"), 0.1, 0); |
9af7ed4e KZ |
1159 | tt_define_column(tb, _("Start"), 12, TT_FL_RIGHT); |
1160 | tt_define_column(tb, _("End"), 12, TT_FL_RIGHT); | |
1161 | tt_define_column(tb, _("Size"), 6, TT_FL_RIGHT); | |
b1920e0b KZ |
1162 | tt_define_column(tb, _("Type"), 0.1, trunc); |
1163 | ||
1164 | if (fdisk_context_display_details(cxt)) { | |
1165 | tt_define_column(tb, _("UUID"), 36, 0); | |
1166 | tt_define_column(tb, _("Name"), 0.2, trunc); | |
1167 | } | |
766d5156 | 1168 | |
76b3b13d | 1169 | for (i = 0; i < le32_to_cpu(h->npartition_entries); i++) { |
b1920e0b KZ |
1170 | struct gpt_entry *e = &gpt->ents[i]; |
1171 | char *sizestr = NULL, *p; | |
1172 | uint64_t start = gpt_partition_start(e); | |
1173 | uint64_t size = gpt_partition_size(e); | |
766d5156 | 1174 | struct fdisk_parttype *t; |
d9948c37 | 1175 | struct tt_line *ln; |
b1920e0b | 1176 | char u_str[37]; |
766d5156 | 1177 | |
46667ba4 | 1178 | if (partition_unused(&gpt->ents[i]) || start == 0) |
766d5156 | 1179 | continue; |
766d5156 DB |
1180 | /* the partition has to inside usable range */ |
1181 | if (start < fu || start + size - 1 > lu) | |
1182 | continue; | |
d9948c37 KZ |
1183 | ln = tt_add_line(tb, NULL); |
1184 | if (!ln) | |
1185 | continue; | |
766d5156 | 1186 | |
b1920e0b KZ |
1187 | if (fdisk_context_display_details(cxt) && |
1188 | asprintf(&p, "%ju", size * cxt->sector_size) > 0) | |
1189 | sizestr = p; | |
1190 | else | |
1191 | sizestr = size_to_human_string(SIZE_SUFFIX_1LETTER, | |
766d5156 | 1192 | size * cxt->sector_size); |
766d5156 DB |
1193 | t = fdisk_get_partition_type(cxt, i); |
1194 | ||
b1920e0b | 1195 | /* basic columns */ |
aec8d883 KZ |
1196 | p = fdisk_partname(cxt->dev_path, i + 1); |
1197 | if (p) | |
d9948c37 KZ |
1198 | tt_line_set_data(ln, 0, p); |
1199 | if (asprintf(&p, "%ju", start) > 0) | |
1200 | tt_line_set_data(ln, 1, p); | |
b1920e0b | 1201 | if (asprintf(&p, "%ju", gpt_partition_end(e)) > 0) |
d9948c37 KZ |
1202 | tt_line_set_data(ln, 2, p); |
1203 | if (sizestr) | |
1204 | tt_line_set_data(ln, 3, sizestr); | |
1205 | if (t && t->name) | |
1206 | tt_line_set_data(ln, 4, strdup(t->name)); | |
b1920e0b KZ |
1207 | |
1208 | /* expert menu column(s) */ | |
1209 | if (fdisk_context_display_details(cxt)) { | |
1210 | char *name = encode_to_utf8( | |
1211 | (unsigned char *)e->name, | |
1212 | sizeof(e->name)); | |
1213 | ||
1214 | if (guid_to_string(&e->partition_guid, u_str)) | |
1215 | tt_line_set_data(ln, 5, strdup(u_str)); | |
1216 | if (name) | |
1217 | tt_line_set_data(ln, 6, name); | |
1218 | } | |
766d5156 | 1219 | |
9475cc78 | 1220 | fdisk_warn_alignment(cxt, start, i); |
766d5156 DB |
1221 | fdisk_free_parttype(t); |
1222 | } | |
d9948c37 | 1223 | |
3c5fb475 | 1224 | rc = fdisk_print_table(cxt, tb); |
d9948c37 | 1225 | tt_free_table(tb); |
3c5fb475 KZ |
1226 | |
1227 | return rc; | |
766d5156 DB |
1228 | } |
1229 | ||
1230 | /* | |
1231 | * Write partitions. | |
1232 | * Returns 0 on success, or corresponding error otherwise. | |
1233 | */ | |
1234 | static int gpt_write_partitions(struct fdisk_context *cxt, | |
d71ef5a4 | 1235 | struct gpt_header *header, struct gpt_entry *ents) |
766d5156 DB |
1236 | { |
1237 | off_t offset = le64_to_cpu(header->partition_entry_lba) * cxt->sector_size; | |
1238 | uint32_t nparts = le32_to_cpu(header->npartition_entries); | |
1239 | uint32_t totwrite = nparts * le32_to_cpu(header->sizeof_partition_entry); | |
130820a8 | 1240 | ssize_t rc; |
766d5156 DB |
1241 | |
1242 | if (offset != lseek(cxt->dev_fd, offset, SEEK_SET)) | |
1243 | goto fail; | |
d71ef5a4 KZ |
1244 | |
1245 | rc = write(cxt->dev_fd, ents, totwrite); | |
130820a8 | 1246 | if (rc > 0 && totwrite == (uint32_t) rc) |
766d5156 DB |
1247 | return 0; |
1248 | fail: | |
1249 | return -errno; | |
1250 | } | |
1251 | ||
1252 | /* | |
1253 | * Write a GPT header to a specified LBA | |
1254 | * Returns 0 on success, or corresponding error otherwise. | |
1255 | */ | |
1256 | static int gpt_write_header(struct fdisk_context *cxt, | |
1257 | struct gpt_header *header, uint64_t lba) | |
1258 | { | |
1259 | off_t offset = lba * cxt->sector_size; | |
1260 | ||
1261 | if (offset != lseek(cxt->dev_fd, offset, SEEK_SET)) | |
1262 | goto fail; | |
1263 | if (cxt->sector_size == | |
1264 | (size_t) write(cxt->dev_fd, header, cxt->sector_size)) | |
1265 | return 0; | |
1266 | fail: | |
1267 | return -errno; | |
1268 | } | |
1269 | ||
1270 | /* | |
1271 | * Write the protective MBR. | |
1272 | * Returns 0 on success, or corresponding error otherwise. | |
1273 | */ | |
1274 | static int gpt_write_pmbr(struct fdisk_context *cxt) | |
1275 | { | |
1276 | off_t offset; | |
1277 | struct gpt_legacy_mbr *pmbr = NULL; | |
1278 | ||
9ffeb235 KZ |
1279 | assert(cxt); |
1280 | assert(cxt->firstsector); | |
766d5156 DB |
1281 | |
1282 | pmbr = (struct gpt_legacy_mbr *) cxt->firstsector; | |
1283 | ||
1284 | /* zero out the legacy partitions */ | |
1285 | memset(pmbr->partition_record, 0, sizeof(pmbr->partition_record)); | |
1286 | ||
1287 | pmbr->signature = cpu_to_le16(MSDOS_MBR_SIGNATURE); | |
1288 | pmbr->partition_record[0].os_type = EFI_PMBR_OSTYPE; | |
1289 | pmbr->partition_record[0].start_sector = 1; | |
1290 | pmbr->partition_record[0].end_head = 0xFE; | |
1291 | pmbr->partition_record[0].end_sector = 0xFF; | |
1292 | pmbr->partition_record[0].end_track = 0xFF; | |
1293 | pmbr->partition_record[0].starting_lba = cpu_to_le32(1); | |
1294 | ||
1295 | /* | |
1296 | * Set size_in_lba to the size of the disk minus one. If the size of the disk | |
1297 | * is too large to be represented by a 32bit LBA (2Tb), set it to 0xFFFFFFFF. | |
1298 | */ | |
1299 | if (cxt->total_sectors - 1 > 0xFFFFFFFFULL) | |
1300 | pmbr->partition_record[0].size_in_lba = cpu_to_le32(0xFFFFFFFF); | |
1301 | else | |
1302 | pmbr->partition_record[0].size_in_lba = | |
1303 | cpu_to_le32(cxt->total_sectors - 1UL); | |
1304 | ||
1305 | offset = GPT_PMBR_LBA * cxt->sector_size; | |
1306 | if (offset != lseek(cxt->dev_fd, offset, SEEK_SET)) | |
1307 | goto fail; | |
1308 | ||
19613111 DB |
1309 | /* pMBR covers the first sector (LBA) of the disk */ |
1310 | if (write_all(cxt->dev_fd, pmbr, cxt->sector_size)) | |
1311 | goto fail; | |
1312 | return 0; | |
766d5156 DB |
1313 | fail: |
1314 | return -errno; | |
1315 | } | |
1316 | ||
1317 | /* | |
1318 | * Writes in-memory GPT and pMBR data to disk. | |
1319 | * Returns 0 if successful write, otherwise, a corresponding error. | |
1320 | * Any indication of error will abort the operation. | |
1321 | */ | |
9ffeb235 | 1322 | static int gpt_write_disklabel(struct fdisk_context *cxt) |
766d5156 | 1323 | { |
9ffeb235 | 1324 | struct fdisk_gpt_label *gpt; |
d71ef5a4 | 1325 | |
9ffeb235 KZ |
1326 | assert(cxt); |
1327 | assert(cxt->label); | |
1328 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1329 | ||
1330 | gpt = self_label(cxt); | |
766d5156 DB |
1331 | |
1332 | /* we do not want to mess up hybrid MBRs by creating a valid pmbr */ | |
1333 | if (valid_pmbr(cxt) == GPT_MBR_HYBRID) | |
1334 | goto err0; | |
1335 | ||
1336 | /* check that disk is big enough to handle the backup header */ | |
c15aec86 | 1337 | if (le64_to_cpu(gpt->pheader->alternative_lba) > cxt->total_sectors) |
766d5156 DB |
1338 | goto err0; |
1339 | ||
1340 | /* check that the backup header is properly placed */ | |
c15aec86 | 1341 | if (le64_to_cpu(gpt->pheader->alternative_lba) < cxt->total_sectors - 1) |
766d5156 DB |
1342 | /* TODO: correct this (with user authorization) and write */ |
1343 | goto err0; | |
1344 | ||
d71ef5a4 | 1345 | if (partition_check_overlaps(gpt->pheader, gpt->ents)) |
766d5156 DB |
1346 | goto err0; |
1347 | ||
1348 | /* recompute CRCs for both headers */ | |
d71ef5a4 KZ |
1349 | gpt_recompute_crc(gpt->pheader, gpt->ents); |
1350 | gpt_recompute_crc(gpt->bheader, gpt->ents); | |
766d5156 DB |
1351 | |
1352 | /* | |
1353 | * UEFI requires writing in this specific order: | |
1354 | * 1) backup partition tables | |
1355 | * 2) backup GPT header | |
1356 | * 3) primary partition tables | |
1357 | * 4) primary GPT header | |
1358 | * 5) protective MBR | |
1359 | * | |
1360 | * If any write fails, we abort the rest. | |
1361 | */ | |
d71ef5a4 | 1362 | if (gpt_write_partitions(cxt, gpt->bheader, gpt->ents) != 0) |
766d5156 | 1363 | goto err1; |
c15aec86 KZ |
1364 | if (gpt_write_header(cxt, gpt->bheader, |
1365 | le64_to_cpu(gpt->pheader->alternative_lba)) != 0) | |
766d5156 | 1366 | goto err1; |
d71ef5a4 | 1367 | if (gpt_write_partitions(cxt, gpt->pheader, gpt->ents) != 0) |
766d5156 | 1368 | goto err1; |
d71ef5a4 | 1369 | if (gpt_write_header(cxt, gpt->pheader, GPT_PRIMARY_PARTITION_TABLE_LBA) != 0) |
766d5156 DB |
1370 | goto err1; |
1371 | if (gpt_write_pmbr(cxt) != 0) | |
1372 | goto err1; | |
1373 | ||
c15aec86 | 1374 | DBG(LABEL, dbgprint("GPT write success")); |
766d5156 DB |
1375 | return 0; |
1376 | err0: | |
c15aec86 KZ |
1377 | DBG(LABEL, dbgprint("GPT write failed: incorrect input")); |
1378 | errno = EINVAL; | |
766d5156 DB |
1379 | return -EINVAL; |
1380 | err1: | |
c15aec86 | 1381 | DBG(LABEL, dbgprint("GPT write failed: %m")); |
766d5156 DB |
1382 | return -errno; |
1383 | } | |
1384 | ||
1385 | /* | |
1386 | * Verify data integrity and report any found problems for: | |
1387 | * - primary and backup header validations | |
1388 | * - paritition validations | |
1389 | */ | |
9ffeb235 | 1390 | static int gpt_verify_disklabel(struct fdisk_context *cxt) |
766d5156 | 1391 | { |
83df5feb KZ |
1392 | int nerror = 0; |
1393 | unsigned int ptnum; | |
9ffeb235 KZ |
1394 | struct fdisk_gpt_label *gpt; |
1395 | ||
1396 | assert(cxt); | |
1397 | assert(cxt->label); | |
1398 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1399 | ||
1400 | gpt = self_label(cxt); | |
766d5156 | 1401 | |
d71ef5a4 | 1402 | if (!gpt || !gpt->bheader) { |
766d5156 | 1403 | nerror++; |
83df5feb | 1404 | fdisk_warnx(cxt, _("Disk does not contain a valid backup header.")); |
766d5156 DB |
1405 | } |
1406 | ||
d71ef5a4 | 1407 | if (!gpt_check_header_crc(gpt->pheader, gpt->ents)) { |
766d5156 | 1408 | nerror++; |
83df5feb | 1409 | fdisk_warnx(cxt, _("Invalid primary header CRC checksum.")); |
766d5156 | 1410 | } |
d71ef5a4 | 1411 | if (gpt->bheader && !gpt_check_header_crc(gpt->bheader, gpt->ents)) { |
766d5156 | 1412 | nerror++; |
83df5feb | 1413 | fdisk_warnx(cxt, _("Invalid backup header CRC checksum.")); |
766d5156 DB |
1414 | } |
1415 | ||
d71ef5a4 | 1416 | if (!gpt_check_entryarr_crc(gpt->pheader, gpt->ents)) { |
766d5156 | 1417 | nerror++; |
83df5feb | 1418 | fdisk_warnx(cxt, _("Invalid partition entry checksum.")); |
766d5156 DB |
1419 | } |
1420 | ||
d71ef5a4 | 1421 | if (!gpt_check_lba_sanity(cxt, gpt->pheader)) { |
766d5156 | 1422 | nerror++; |
83df5feb | 1423 | fdisk_warnx(cxt, _("Invalid primary header LBA sanity checks.")); |
766d5156 | 1424 | } |
d71ef5a4 | 1425 | if (gpt->bheader && !gpt_check_lba_sanity(cxt, gpt->bheader)) { |
766d5156 | 1426 | nerror++; |
83df5feb | 1427 | fdisk_warnx(cxt, _("Invalid backup header LBA sanity checks.")); |
766d5156 DB |
1428 | } |
1429 | ||
d71ef5a4 | 1430 | if (le64_to_cpu(gpt->pheader->my_lba) != GPT_PRIMARY_PARTITION_TABLE_LBA) { |
766d5156 | 1431 | nerror++; |
83df5feb | 1432 | fdisk_warnx(cxt, _("MyLBA mismatch with real position at primary header.")); |
766d5156 | 1433 | } |
d71ef5a4 | 1434 | if (gpt->bheader && le64_to_cpu(gpt->bheader->my_lba) != last_lba(cxt)) { |
766d5156 | 1435 | nerror++; |
83df5feb | 1436 | fdisk_warnx(cxt, _("MyLBA mismatch with real position at backup header.")); |
766d5156 DB |
1437 | |
1438 | } | |
c15aec86 | 1439 | if (le64_to_cpu(gpt->pheader->alternative_lba) >= cxt->total_sectors) { |
766d5156 | 1440 | nerror++; |
83df5feb | 1441 | fdisk_warnx(cxt, _("Disk is to small to hold all data.")); |
766d5156 DB |
1442 | } |
1443 | ||
1444 | /* | |
1445 | * if the GPT is the primary table, check the alternateLBA | |
1446 | * to see if it is a valid GPT | |
1447 | */ | |
c15aec86 KZ |
1448 | if (gpt->bheader && (le64_to_cpu(gpt->pheader->my_lba) != |
1449 | le64_to_cpu(gpt->bheader->alternative_lba))) { | |
766d5156 | 1450 | nerror++; |
83df5feb | 1451 | fdisk_warnx(cxt, _("Primary and backup header mismatch.")); |
766d5156 DB |
1452 | } |
1453 | ||
d71ef5a4 | 1454 | ptnum = partition_check_overlaps(gpt->pheader, gpt->ents); |
766d5156 DB |
1455 | if (ptnum) { |
1456 | nerror++; | |
83df5feb KZ |
1457 | fdisk_warnx(cxt, _("Partition %u overlaps with partition %u."), |
1458 | ptnum, ptnum+1); | |
766d5156 DB |
1459 | } |
1460 | ||
d71ef5a4 | 1461 | ptnum = partition_check_too_big(gpt->pheader, gpt->ents, cxt->total_sectors); |
766d5156 DB |
1462 | if (ptnum) { |
1463 | nerror++; | |
83df5feb KZ |
1464 | fdisk_warnx(cxt, _("Partition %u is too big for the disk."), |
1465 | ptnum); | |
766d5156 DB |
1466 | } |
1467 | ||
d71ef5a4 | 1468 | ptnum = partition_start_after_end(gpt->pheader, gpt->ents); |
766d5156 DB |
1469 | if (ptnum) { |
1470 | nerror++; | |
83df5feb KZ |
1471 | fdisk_warnx(cxt, _("Partition %u ends before it starts."), |
1472 | ptnum); | |
766d5156 DB |
1473 | } |
1474 | ||
1475 | if (!nerror) { /* yay :-) */ | |
1476 | uint32_t nsegments = 0; | |
1477 | uint64_t free_sectors = 0, largest_segment = 0; | |
1478 | ||
83df5feb KZ |
1479 | fdisk_info(cxt, _("No errors detected")); |
1480 | fdisk_info(cxt, _("Header version: %s"), gpt_get_header_revstr(gpt->pheader)); | |
1481 | fdisk_info(cxt, _("Using %u out of %d partitions."), | |
d71ef5a4 KZ |
1482 | partitions_in_use(gpt->pheader, gpt->ents), |
1483 | le32_to_cpu(gpt->pheader->npartition_entries)); | |
766d5156 | 1484 | |
d71ef5a4 | 1485 | free_sectors = get_free_sectors(cxt, gpt->pheader, gpt->ents, |
766d5156 | 1486 | &nsegments, &largest_segment); |
83df5feb KZ |
1487 | fdisk_info(cxt, _("A total of %ld free sectors available in %d segment(s) " |
1488 | "(largest %ld)."), | |
766d5156 DB |
1489 | free_sectors, nsegments, largest_segment); |
1490 | } else | |
83df5feb | 1491 | fdisk_warnx(cxt, _("Detected %d error(s)."), nerror); |
766d5156 DB |
1492 | |
1493 | return 0; | |
1494 | } | |
1495 | ||
1496 | /* Delete a single GPT partition, specified by partnum. */ | |
8a95621d | 1497 | static int gpt_delete_partition(struct fdisk_context *cxt, |
9ffeb235 | 1498 | size_t partnum) |
766d5156 | 1499 | { |
9ffeb235 | 1500 | struct fdisk_gpt_label *gpt; |
d71ef5a4 | 1501 | |
9ffeb235 KZ |
1502 | assert(cxt); |
1503 | assert(cxt->label); | |
1504 | assert(fdisk_is_disklabel(cxt, GPT)); | |
d71ef5a4 | 1505 | |
9ffeb235 KZ |
1506 | gpt = self_label(cxt); |
1507 | ||
1508 | if (partnum >= cxt->label->nparts_max | |
1509 | || partition_unused(&gpt->ents[partnum])) | |
1f5eb51b | 1510 | return -EINVAL; |
766d5156 DB |
1511 | |
1512 | /* hasta la vista, baby! */ | |
d71ef5a4 KZ |
1513 | memset(&gpt->ents[partnum], 0, sizeof(struct gpt_entry)); |
1514 | if (!partition_unused(&gpt->ents[partnum])) | |
1f5eb51b | 1515 | return -EINVAL; |
766d5156 | 1516 | else { |
d71ef5a4 KZ |
1517 | gpt_recompute_crc(gpt->pheader, gpt->ents); |
1518 | gpt_recompute_crc(gpt->bheader, gpt->ents); | |
9ffeb235 KZ |
1519 | cxt->label->nparts_cur--; |
1520 | fdisk_label_set_changed(cxt->label, 1); | |
766d5156 | 1521 | } |
1f5eb51b DB |
1522 | |
1523 | return 0; | |
766d5156 DB |
1524 | } |
1525 | ||
c0d14b09 | 1526 | static void gpt_entry_set_type(struct gpt_entry *e, struct gpt_guid *uuid) |
766d5156 | 1527 | { |
d45fa25d KZ |
1528 | e->type = *uuid; |
1529 | DBG(LABEL, dbgprint_uuid("new type", &(e->type))); | |
766d5156 DB |
1530 | } |
1531 | ||
1532 | /* | |
1533 | * Create a new GPT partition entry, specified by partnum, and with a range | |
1534 | * of fsect to lsenct sectors, of type t. | |
1535 | * Returns 0 on success, or negative upon failure. | |
1536 | */ | |
d71ef5a4 | 1537 | static int gpt_create_new_partition(struct fdisk_context *cxt, |
9ffeb235 | 1538 | size_t partnum, uint64_t fsect, uint64_t lsect, |
766d5156 DB |
1539 | struct gpt_guid *type, |
1540 | struct gpt_entry *entries) | |
1541 | { | |
1542 | struct gpt_entry *e = NULL; | |
d71ef5a4 | 1543 | struct fdisk_gpt_label *gpt; |
766d5156 | 1544 | |
9ffeb235 KZ |
1545 | assert(cxt); |
1546 | assert(cxt->label); | |
1547 | assert(fdisk_is_disklabel(cxt, GPT)); | |
766d5156 | 1548 | |
9ffeb235 KZ |
1549 | gpt = self_label(cxt); |
1550 | ||
1551 | if (fsect > lsect || partnum >= cxt->label->nparts_max) | |
1552 | return -EINVAL; | |
d71ef5a4 | 1553 | |
46667ba4 KZ |
1554 | e = calloc(1, sizeof(*e)); |
1555 | if (!e) | |
1556 | return -ENOMEM; | |
766d5156 DB |
1557 | e->lba_end = cpu_to_le64(lsect); |
1558 | e->lba_start = cpu_to_le64(fsect); | |
1559 | ||
1560 | gpt_entry_set_type(e, type); | |
1561 | ||
766d5156 DB |
1562 | /* |
1563 | * Any time a new partition entry is created a new GUID must be | |
1564 | * generated for that partition, and every partition is guaranteed | |
1565 | * to have a unique GUID. | |
1566 | */ | |
d45fa25d KZ |
1567 | uuid_generate_random((unsigned char *) &e->partition_guid); |
1568 | swap_efi_guid(&e->partition_guid); | |
766d5156 | 1569 | |
d71ef5a4 | 1570 | memcpy(&entries[partnum], e, sizeof(*e)); |
766d5156 | 1571 | |
d71ef5a4 KZ |
1572 | gpt_recompute_crc(gpt->pheader, entries); |
1573 | gpt_recompute_crc(gpt->bheader, entries); | |
766d5156 DB |
1574 | |
1575 | free(e); | |
1576 | return 0; | |
1577 | } | |
1578 | ||
1579 | /* Performs logical checks to add a new partition entry */ | |
8a95621d KZ |
1580 | static int gpt_add_partition( |
1581 | struct fdisk_context *cxt, | |
9ffeb235 | 1582 | size_t partnum, |
8a95621d | 1583 | struct fdisk_parttype *t) |
766d5156 | 1584 | { |
512a430f KZ |
1585 | uint64_t user_f, user_l; /* user input ranges for first and last sectors */ |
1586 | uint64_t disk_f, disk_l; /* first and last available sector ranges on device*/ | |
1587 | uint64_t dflt_f, dflt_l; /* largest segment (default) */ | |
c0d14b09 | 1588 | struct gpt_guid typeid; |
9ffeb235 | 1589 | struct fdisk_gpt_label *gpt; |
d71ef5a4 KZ |
1590 | struct gpt_header *pheader; |
1591 | struct gpt_entry *ents; | |
4114da08 KZ |
1592 | struct fdisk_ask *ask = NULL; |
1593 | int rc; | |
766d5156 | 1594 | |
9ffeb235 KZ |
1595 | assert(cxt); |
1596 | assert(cxt->label); | |
1597 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1598 | ||
1599 | gpt = self_label(cxt); | |
1600 | ||
1601 | if (partnum >= cxt->label->nparts_max) | |
8254c3a5 | 1602 | return -EINVAL; |
d71ef5a4 KZ |
1603 | |
1604 | pheader = gpt->pheader; | |
1605 | ents = gpt->ents; | |
1606 | ||
874aa9c3 | 1607 | if (!partition_unused(&ents[partnum])) { |
83df5feb KZ |
1608 | fdisk_warnx(cxt, _("Partition %zd is already defined. " |
1609 | "Delete it before re-adding it."), partnum +1); | |
8254c3a5 | 1610 | return -EINVAL; |
766d5156 | 1611 | } |
d71ef5a4 KZ |
1612 | if (le32_to_cpu(pheader->npartition_entries) == |
1613 | partitions_in_use(pheader, ents)) { | |
83df5feb | 1614 | fdisk_warnx(cxt, _("All partitions are already in use.")); |
8254c3a5 | 1615 | return -EINVAL; |
766d5156 DB |
1616 | } |
1617 | ||
512a430f | 1618 | if (!get_free_sectors(cxt, pheader, ents, NULL, NULL)) { |
83df5feb | 1619 | fdisk_warnx(cxt, _("No free sectors available.")); |
8254c3a5 | 1620 | return -ENOSPC; |
766d5156 DB |
1621 | } |
1622 | ||
512a430f KZ |
1623 | disk_f = find_first_available(pheader, ents, 0); |
1624 | disk_l = find_last_free_sector(pheader, ents); | |
1625 | ||
1626 | /* the default is the largest free space */ | |
1627 | dflt_f = find_first_in_largest(pheader, ents); | |
1628 | dflt_l = find_last_free(pheader, ents, dflt_f); | |
1629 | ||
1630 | /* align the default in range <dflt_f,dflt_l>*/ | |
9475cc78 | 1631 | dflt_f = fdisk_align_lba_in_range(cxt, dflt_f, dflt_f, dflt_l); |
766d5156 | 1632 | |
c0d14b09 | 1633 | string_to_guid(t && t->typestr ? t->typestr : GPT_DEFAULT_ENTRY_TYPE, &typeid); |
766d5156 DB |
1634 | |
1635 | /* get user input for first and last sectors of the new partition */ | |
766d5156 | 1636 | for (;;) { |
4114da08 KZ |
1637 | if (!ask) |
1638 | ask = fdisk_new_ask(); | |
1639 | else | |
1640 | fdisk_reset_ask(ask); | |
1641 | ||
1642 | /* First sector */ | |
1643 | fdisk_ask_set_query(ask, _("First sector")); | |
1644 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_NUMBER); | |
1645 | fdisk_ask_number_set_low(ask, disk_f); /* minimal */ | |
1646 | fdisk_ask_number_set_default(ask, dflt_f); /* default */ | |
1647 | fdisk_ask_number_set_high(ask, disk_l); /* maximal */ | |
1648 | ||
1649 | rc = fdisk_do_ask(cxt, ask); | |
1650 | if (rc) | |
1651 | goto done; | |
1652 | ||
1653 | user_f = fdisk_ask_number_get_result(ask); | |
e3443e8f | 1654 | if (user_f != find_first_available(pheader, ents, user_f)) { |
83df5feb | 1655 | fdisk_warnx(cxt, _("Sector %ju already used."), user_f); |
512a430f | 1656 | continue; |
e3443e8f | 1657 | } |
512a430f | 1658 | |
4114da08 KZ |
1659 | fdisk_reset_ask(ask); |
1660 | ||
512a430f KZ |
1661 | /* Last sector */ |
1662 | dflt_l = find_last_free(pheader, ents, user_f); | |
512a430f | 1663 | |
4114da08 KZ |
1664 | fdisk_ask_set_query(ask, _("Last sector, +sectors or +size{K,M,G,T,P}")); |
1665 | fdisk_ask_set_type(ask, FDISK_ASKTYPE_OFFSET); | |
1666 | fdisk_ask_number_set_low(ask, user_f); /* minimal */ | |
1667 | fdisk_ask_number_set_default(ask, dflt_l); /* default */ | |
1668 | fdisk_ask_number_set_high(ask, dflt_l); /* maximal */ | |
1669 | fdisk_ask_number_set_base(ask, user_f); /* base for relative input */ | |
1670 | fdisk_ask_number_set_unit(ask, cxt->sector_size); | |
1671 | ||
1672 | rc = fdisk_do_ask(cxt, ask); | |
1673 | if (rc) | |
1674 | goto done; | |
1675 | ||
1676 | user_l = fdisk_ask_number_get_result(ask); | |
1677 | if (fdisk_ask_number_is_relative(ask)) | |
1678 | user_l = fdisk_align_lba_in_range(cxt, user_l, user_f, dflt_l) - 1; | |
512a430f KZ |
1679 | if (user_l > user_f && user_l <= disk_l) |
1680 | break; | |
766d5156 DB |
1681 | } |
1682 | ||
d71ef5a4 | 1683 | if (gpt_create_new_partition(cxt, partnum, |
c0d14b09 | 1684 | user_f, user_l, &typeid, ents) != 0) |
83df5feb | 1685 | fdisk_warnx(cxt, _("Could not create partition %zd"), partnum + 1); |
9fcd49d5 | 1686 | else { |
83df5feb | 1687 | fdisk_info(cxt, _("Created partition %zd\n"), partnum + 1); |
9ffeb235 KZ |
1688 | cxt->label->nparts_cur++; |
1689 | fdisk_label_set_changed(cxt->label, 1); | |
9fcd49d5 | 1690 | } |
8254c3a5 | 1691 | |
4114da08 KZ |
1692 | rc = 0; |
1693 | done: | |
1694 | fdisk_free_ask(ask); | |
1695 | return rc; | |
766d5156 DB |
1696 | } |
1697 | ||
3f731001 DB |
1698 | /* |
1699 | * Create a new GPT disklabel - destroys any previous data. | |
1700 | */ | |
9ffeb235 | 1701 | static int gpt_create_disklabel(struct fdisk_context *cxt) |
3f731001 DB |
1702 | { |
1703 | int rc = 0; | |
46667ba4 | 1704 | ssize_t esz = 0; |
21fe3dde | 1705 | char str[37]; |
9ffeb235 KZ |
1706 | struct fdisk_gpt_label *gpt; |
1707 | ||
1708 | assert(cxt); | |
1709 | assert(cxt->label); | |
1710 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1711 | ||
1712 | gpt = self_label(cxt); | |
3f731001 | 1713 | |
d71ef5a4 | 1714 | /* label private stuff has to be empty, see gpt_deinit() */ |
d71ef5a4 KZ |
1715 | assert(gpt->pheader == NULL); |
1716 | assert(gpt->bheader == NULL); | |
4e0e8253 | 1717 | |
3f731001 | 1718 | /* |
3f731001 DB |
1719 | * When no header, entries or pmbr is set, we're probably |
1720 | * dealing with a new, empty disk - so always allocate memory | |
1721 | * to deal with the data structures whatever the case is. | |
1722 | */ | |
3f731001 DB |
1723 | rc = gpt_mknew_pmbr(cxt); |
1724 | if (rc < 0) | |
1725 | goto done; | |
1726 | ||
d71ef5a4 | 1727 | /* primary */ |
46667ba4 KZ |
1728 | gpt->pheader = calloc(1, sizeof(*gpt->pheader)); |
1729 | if (!gpt->pheader) { | |
1730 | rc = -ENOMEM; | |
1731 | goto done; | |
1732 | } | |
d71ef5a4 | 1733 | rc = gpt_mknew_header(cxt, gpt->pheader, GPT_PRIMARY_PARTITION_TABLE_LBA); |
3f731001 DB |
1734 | if (rc < 0) |
1735 | goto done; | |
1736 | ||
d71ef5a4 | 1737 | /* backup ("copy" primary) */ |
46667ba4 KZ |
1738 | gpt->bheader = calloc(1, sizeof(*gpt->bheader)); |
1739 | if (!gpt->bheader) { | |
1740 | rc = -ENOMEM; | |
1741 | goto done; | |
1742 | } | |
d71ef5a4 KZ |
1743 | rc = gpt_mknew_header_from_bkp(cxt, gpt->bheader, |
1744 | last_lba(cxt), gpt->pheader); | |
3f731001 DB |
1745 | if (rc < 0) |
1746 | goto done; | |
1747 | ||
46667ba4 KZ |
1748 | esz = le32_to_cpu(gpt->pheader->npartition_entries) * |
1749 | le32_to_cpu(gpt->pheader->sizeof_partition_entry); | |
1750 | gpt->ents = calloc(1, esz); | |
1751 | if (!gpt->ents) { | |
1752 | rc = -ENOMEM; | |
1753 | goto done; | |
1754 | } | |
d71ef5a4 KZ |
1755 | gpt_recompute_crc(gpt->pheader, gpt->ents); |
1756 | gpt_recompute_crc(gpt->bheader, gpt->ents); | |
3f731001 | 1757 | |
9ffeb235 KZ |
1758 | cxt->label->nparts_max = le32_to_cpu(gpt->pheader->npartition_entries); |
1759 | cxt->label->nparts_cur = 0; | |
9fcd49d5 | 1760 | |
21fe3dde KZ |
1761 | guid_to_string(&gpt->pheader->disk_guid, str); |
1762 | fdisk_info(cxt, _("Building a new GPT disklabel (GUID: %s)"), str); | |
9ffeb235 | 1763 | fdisk_label_set_changed(cxt->label, 1); |
3f731001 DB |
1764 | done: |
1765 | return rc; | |
1766 | } | |
1767 | ||
21fe3dde KZ |
1768 | static int gpt_get_disklabel_id(struct fdisk_context *cxt, char **id) |
1769 | { | |
1770 | struct fdisk_gpt_label *gpt; | |
1771 | char str[37]; | |
1772 | ||
1773 | assert(cxt); | |
1774 | assert(id); | |
1775 | assert(cxt->label); | |
1776 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1777 | ||
1778 | gpt = self_label(cxt); | |
1779 | guid_to_string(&gpt->pheader->disk_guid, str); | |
1780 | ||
1781 | *id = strdup(str); | |
1782 | if (!*id) | |
1783 | return -ENOMEM; | |
1784 | return 0; | |
1785 | } | |
1786 | ||
35b1f0a4 KZ |
1787 | static int gpt_set_disklabel_id(struct fdisk_context *cxt) |
1788 | { | |
1789 | struct fdisk_gpt_label *gpt; | |
1790 | struct gpt_guid uuid; | |
1791 | char *str, *old, *new; | |
1792 | int rc; | |
1793 | ||
1794 | assert(cxt); | |
1795 | assert(cxt->label); | |
1796 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1797 | ||
1798 | gpt = self_label(cxt); | |
1799 | if (fdisk_ask_string(cxt, | |
1800 | _("Enter new disk UUID (in 8-4-4-4-12 format)"), &str)) | |
1801 | return -EINVAL; | |
1802 | ||
1803 | rc = string_to_guid(str, &uuid); | |
1804 | free(str); | |
1805 | ||
1806 | if (rc) { | |
1807 | fdisk_warnx(cxt, _("Failed to parse your UUID.")); | |
1808 | return rc; | |
1809 | } | |
1810 | ||
1811 | gpt_get_disklabel_id(cxt, &old); | |
1812 | ||
1813 | gpt->pheader->disk_guid = uuid; | |
1814 | gpt->bheader->disk_guid = uuid; | |
1815 | ||
1816 | gpt_recompute_crc(gpt->pheader, gpt->ents); | |
1817 | gpt_recompute_crc(gpt->bheader, gpt->ents); | |
1818 | ||
1819 | gpt_get_disklabel_id(cxt, &new); | |
1820 | ||
1821 | fdisk_info(cxt, _("Changing disk identifier from %s to %s."), old, new); | |
1822 | ||
1823 | free(old); | |
1824 | free(new); | |
1825 | fdisk_label_set_changed(cxt->label, 1); | |
1826 | return 0; | |
1827 | } | |
1828 | ||
1829 | ||
8a95621d KZ |
1830 | static struct fdisk_parttype *gpt_get_partition_type( |
1831 | struct fdisk_context *cxt, | |
9ffeb235 | 1832 | size_t i) |
766d5156 DB |
1833 | { |
1834 | struct fdisk_parttype *t; | |
766d5156 | 1835 | char str[37]; |
9ffeb235 | 1836 | struct fdisk_gpt_label *gpt; |
d71ef5a4 | 1837 | |
9ffeb235 KZ |
1838 | assert(cxt); |
1839 | assert(cxt->label); | |
1840 | assert(fdisk_is_disklabel(cxt, GPT)); | |
766d5156 | 1841 | |
9ffeb235 KZ |
1842 | gpt = self_label(cxt); |
1843 | ||
1844 | if ((uint32_t) i >= le32_to_cpu(gpt->pheader->npartition_entries)) | |
766d5156 DB |
1845 | return NULL; |
1846 | ||
d45fa25d | 1847 | guid_to_string(&gpt->ents[i].type, str); |
766d5156 DB |
1848 | t = fdisk_get_parttype_from_string(cxt, str); |
1849 | if (!t) | |
1850 | t = fdisk_new_unknown_parttype(0, str); | |
1851 | ||
1852 | return t; | |
1853 | } | |
1854 | ||
1855 | ||
8a95621d KZ |
1856 | static int gpt_set_partition_type( |
1857 | struct fdisk_context *cxt, | |
9ffeb235 | 1858 | size_t i, |
8a95621d | 1859 | struct fdisk_parttype *t) |
766d5156 DB |
1860 | { |
1861 | struct gpt_guid uuid; | |
9ffeb235 | 1862 | struct fdisk_gpt_label *gpt; |
d71ef5a4 | 1863 | |
9ffeb235 KZ |
1864 | assert(cxt); |
1865 | assert(cxt->label); | |
1866 | assert(fdisk_is_disklabel(cxt, GPT)); | |
766d5156 | 1867 | |
9ffeb235 KZ |
1868 | gpt = self_label(cxt); |
1869 | if ((uint32_t) i >= le32_to_cpu(gpt->pheader->npartition_entries) | |
c0d14b09 | 1870 | || !t || !t->typestr || string_to_guid(t->typestr, &uuid) != 0) |
766d5156 DB |
1871 | return -EINVAL; |
1872 | ||
d71ef5a4 KZ |
1873 | gpt_entry_set_type(&gpt->ents[i], &uuid); |
1874 | gpt_recompute_crc(gpt->pheader, gpt->ents); | |
1875 | gpt_recompute_crc(gpt->bheader, gpt->ents); | |
bddd84e7 | 1876 | |
9ffeb235 | 1877 | fdisk_label_set_changed(cxt->label, 1); |
766d5156 DB |
1878 | return 0; |
1879 | } | |
1880 | ||
47b8e7c0 KZ |
1881 | static int gpt_get_partition_status( |
1882 | struct fdisk_context *cxt, | |
9ffeb235 | 1883 | size_t i, |
47b8e7c0 KZ |
1884 | int *status) |
1885 | { | |
9ffeb235 | 1886 | struct fdisk_gpt_label *gpt; |
47b8e7c0 KZ |
1887 | struct gpt_entry *e; |
1888 | ||
9ffeb235 KZ |
1889 | assert(cxt); |
1890 | assert(cxt->label); | |
1891 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1892 | ||
1893 | gpt = self_label(cxt); | |
1894 | ||
1895 | if (!status || (uint32_t) i >= le32_to_cpu(gpt->pheader->npartition_entries)) | |
47b8e7c0 KZ |
1896 | return -EINVAL; |
1897 | ||
1898 | e = &gpt->ents[i]; | |
1899 | *status = FDISK_PARTSTAT_NONE; | |
1900 | ||
46667ba4 | 1901 | if (!partition_unused(e) || gpt_partition_start(e)) |
47b8e7c0 KZ |
1902 | *status = FDISK_PARTSTAT_USED; |
1903 | ||
1904 | return 0; | |
1905 | } | |
1906 | ||
34b06299 KZ |
1907 | int fdisk_gpt_partition_set_uuid(struct fdisk_context *cxt, size_t i) |
1908 | { | |
1909 | struct fdisk_gpt_label *gpt; | |
1910 | struct gpt_entry *e; | |
1911 | struct gpt_guid uuid; | |
1912 | char *str, new_u[37], old_u[37]; | |
1913 | int rc; | |
1914 | ||
1915 | assert(cxt); | |
1916 | assert(cxt->label); | |
1917 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1918 | ||
1054699c | 1919 | DBG(LABEL, dbgprint("UUID change requested partno=%zd", i)); |
34b06299 KZ |
1920 | |
1921 | gpt = self_label(cxt); | |
1922 | ||
1923 | if ((uint32_t) i >= le32_to_cpu(gpt->pheader->npartition_entries)) | |
1924 | return -EINVAL; | |
1925 | ||
1926 | if (fdisk_ask_string(cxt, | |
1927 | _("New UUID (in 8-4-4-4-12 format)"), &str)) | |
1928 | return -EINVAL; | |
1929 | ||
1930 | rc = string_to_guid(str, &uuid); | |
1931 | free(str); | |
1932 | ||
35b1f0a4 KZ |
1933 | if (rc) { |
1934 | fdisk_warnx(cxt, _("Failed to parse your UUID.")); | |
34b06299 | 1935 | return rc; |
35b1f0a4 | 1936 | } |
34b06299 KZ |
1937 | |
1938 | e = &gpt->ents[i]; | |
1939 | ||
d45fa25d | 1940 | guid_to_string(&e->partition_guid, old_u); |
34b06299 KZ |
1941 | guid_to_string(&uuid, new_u); |
1942 | fdisk_info(cxt, _("Changing partition UUID from %s to %s"), | |
1943 | old_u, new_u); | |
1944 | ||
d45fa25d | 1945 | e->partition_guid = uuid; |
34b06299 KZ |
1946 | gpt_recompute_crc(gpt->pheader, gpt->ents); |
1947 | gpt_recompute_crc(gpt->bheader, gpt->ents); | |
1948 | ||
1949 | fdisk_label_set_changed(cxt->label, 1); | |
1950 | return 0; | |
1951 | } | |
47b8e7c0 | 1952 | |
1054699c KZ |
1953 | int fdisk_gpt_partition_set_name(struct fdisk_context *cxt, size_t i) |
1954 | { | |
1955 | struct fdisk_gpt_label *gpt; | |
1956 | struct gpt_entry *e; | |
1957 | char *str, *old, name[GPT_PART_NAME_LEN] = { 0 }; | |
1958 | size_t sz; | |
1959 | ||
1960 | assert(cxt); | |
1961 | assert(cxt->label); | |
1962 | assert(fdisk_is_disklabel(cxt, GPT)); | |
1963 | ||
1964 | DBG(LABEL, dbgprint("NAME change requested partno=%zd", i)); | |
1965 | ||
1966 | gpt = self_label(cxt); | |
1967 | ||
1968 | if ((uint32_t) i >= le32_to_cpu(gpt->pheader->npartition_entries)) | |
1969 | return -EINVAL; | |
1970 | ||
1971 | if (fdisk_ask_string(cxt, _("New name"), &str)) | |
1972 | return -EINVAL; | |
1973 | ||
1974 | e = &gpt->ents[i]; | |
1975 | old = encode_to_utf8((unsigned char *)e->name, sizeof(e->name)); | |
1976 | ||
1977 | fdisk_info(cxt, _("Changing partition name from '%s' to '%.*s'"), | |
1978 | old, GPT_PART_NAME_LEN, str); | |
1979 | sz = strlen(str); | |
1980 | if (sz) { | |
1981 | if (sz > GPT_PART_NAME_LEN) | |
1982 | sz = GPT_PART_NAME_LEN; | |
1983 | memcpy(name, str, sz); | |
1984 | } | |
1985 | free(str); | |
1986 | free(old); | |
1987 | ||
1988 | for (i = 0; i < GPT_PART_NAME_LEN; i++) | |
1989 | e->name[i] = cpu_to_le16((uint16_t) name[i]); | |
1990 | ||
1991 | gpt_recompute_crc(gpt->pheader, gpt->ents); | |
1992 | gpt_recompute_crc(gpt->bheader, gpt->ents); | |
1993 | ||
1994 | fdisk_label_set_changed(cxt->label, 1); | |
1995 | return 0; | |
1996 | } | |
1997 | ||
1998 | ||
4e0e8253 KZ |
1999 | /* |
2000 | * Deinitialize fdisk-specific variables | |
2001 | */ | |
d71ef5a4 | 2002 | static void gpt_deinit(struct fdisk_label *lb) |
4e0e8253 | 2003 | { |
d71ef5a4 KZ |
2004 | struct fdisk_gpt_label *gpt = (struct fdisk_gpt_label *) lb; |
2005 | ||
2006 | if (!gpt) | |
2007 | return; | |
2008 | ||
2009 | free(gpt->ents); | |
2010 | free(gpt->pheader); | |
2011 | free(gpt->bheader); | |
2012 | ||
2013 | gpt->ents = NULL; | |
2014 | gpt->pheader = NULL; | |
2015 | gpt->bheader = NULL; | |
4e0e8253 KZ |
2016 | } |
2017 | ||
0c5d095e | 2018 | static const struct fdisk_label_operations gpt_operations = |
766d5156 | 2019 | { |
0c5d095e KZ |
2020 | .probe = gpt_probe_label, |
2021 | .write = gpt_write_disklabel, | |
2022 | .verify = gpt_verify_disklabel, | |
2023 | .create = gpt_create_disklabel, | |
3c5fb475 | 2024 | .list = gpt_list_disklabel, |
21fe3dde | 2025 | .get_id = gpt_get_disklabel_id, |
35b1f0a4 | 2026 | .set_id = gpt_set_disklabel_id, |
21fe3dde | 2027 | |
0c5d095e KZ |
2028 | .part_add = gpt_add_partition, |
2029 | .part_delete = gpt_delete_partition, | |
2030 | .part_get_type = gpt_get_partition_type, | |
4e0e8253 KZ |
2031 | .part_set_type = gpt_set_partition_type, |
2032 | ||
47b8e7c0 KZ |
2033 | .part_get_status = gpt_get_partition_status, |
2034 | ||
4e0e8253 | 2035 | .deinit = gpt_deinit |
766d5156 | 2036 | }; |
0c5d095e KZ |
2037 | |
2038 | /* | |
2039 | * allocates GPT in-memory stuff | |
2040 | */ | |
2041 | struct fdisk_label *fdisk_new_gpt_label(struct fdisk_context *cxt) | |
2042 | { | |
2043 | struct fdisk_label *lb; | |
2044 | struct fdisk_gpt_label *gpt; | |
2045 | ||
2046 | assert(cxt); | |
2047 | ||
2048 | gpt = calloc(1, sizeof(*gpt)); | |
2049 | if (!gpt) | |
2050 | return NULL; | |
2051 | ||
2052 | /* initialize generic part of the driver */ | |
2053 | lb = (struct fdisk_label *) gpt; | |
2054 | lb->name = "gpt"; | |
53b422ab | 2055 | lb->id = FDISK_DISKLABEL_GPT; |
0c5d095e KZ |
2056 | lb->op = &gpt_operations; |
2057 | lb->parttypes = gpt_parttypes; | |
2058 | lb->nparttypes = ARRAY_SIZE(gpt_parttypes); | |
2059 | ||
2060 | return lb; | |
2061 | } |