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5c363129 BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
1d3ba0bf | 9 | * or https://opensource.org/licenses/CDDL-1.0. |
5c363129 BB |
10 | * See the License for the specific language governing permissions |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
572e2857 | 23 | * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
fc803849 | 24 | * Copyright 2012 Nexenta Systems, Inc. All rights reserved. |
74d42600 | 25 | * Copyright (c) 2018 by Delphix. All rights reserved. |
5c363129 BB |
26 | */ |
27 | ||
28 | #include <stdio.h> | |
29 | #include <stdlib.h> | |
30 | #include <errno.h> | |
93ce2b4c | 31 | #include <string.h> |
5c363129 BB |
32 | #include <unistd.h> |
33 | #include <uuid/uuid.h> | |
d603ed6c | 34 | #include <zlib.h> |
5c363129 BB |
35 | #include <libintl.h> |
36 | #include <sys/types.h> | |
37 | #include <sys/dkio.h> | |
5c363129 BB |
38 | #include <sys/mhd.h> |
39 | #include <sys/param.h> | |
40 | #include <sys/dktp/fdisk.h> | |
41 | #include <sys/efi_partition.h> | |
42 | #include <sys/byteorder.h> | |
475ebd76 | 43 | #include <sys/vdev_disk.h> |
d603ed6c | 44 | #include <linux/fs.h> |
8e82ffba | 45 | #include <linux/blkpg.h> |
5c363129 BB |
46 | |
47 | static struct uuid_to_ptag { | |
48 | struct uuid uuid; | |
49 | } conversion_array[] = { | |
50 | { EFI_UNUSED }, | |
51 | { EFI_BOOT }, | |
52 | { EFI_ROOT }, | |
53 | { EFI_SWAP }, | |
54 | { EFI_USR }, | |
55 | { EFI_BACKUP }, | |
d603ed6c | 56 | { EFI_UNUSED }, /* STAND is never used */ |
5c363129 BB |
57 | { EFI_VAR }, |
58 | { EFI_HOME }, | |
59 | { EFI_ALTSCTR }, | |
d603ed6c | 60 | { EFI_UNUSED }, /* CACHE (cachefs) is never used */ |
5c363129 BB |
61 | { EFI_RESERVED }, |
62 | { EFI_SYSTEM }, | |
63 | { EFI_LEGACY_MBR }, | |
572e2857 BB |
64 | { EFI_SYMC_PUB }, |
65 | { EFI_SYMC_CDS }, | |
5c363129 BB |
66 | { EFI_MSFT_RESV }, |
67 | { EFI_DELL_BASIC }, | |
68 | { EFI_DELL_RAID }, | |
69 | { EFI_DELL_SWAP }, | |
70 | { EFI_DELL_LVM }, | |
71 | { EFI_DELL_RESV }, | |
72 | { EFI_AAPL_HFS }, | |
fc803849 YP |
73 | { EFI_AAPL_UFS }, |
74 | { EFI_FREEBSD_BOOT }, | |
75 | { EFI_FREEBSD_SWAP }, | |
76 | { EFI_FREEBSD_UFS }, | |
77 | { EFI_FREEBSD_VINUM }, | |
917b8c5c | 78 | { EFI_FREEBSD_ZFS }, |
79 | { EFI_BIOS_BOOT }, | |
80 | { EFI_INTC_RS }, | |
81 | { EFI_SNE_BOOT }, | |
82 | { EFI_LENOVO_BOOT }, | |
83 | { EFI_MSFT_LDMM }, | |
84 | { EFI_MSFT_LDMD }, | |
85 | { EFI_MSFT_RE }, | |
86 | { EFI_IBM_GPFS }, | |
87 | { EFI_MSFT_STORAGESPACES }, | |
88 | { EFI_HPQ_DATA }, | |
89 | { EFI_HPQ_SVC }, | |
90 | { EFI_RHT_DATA }, | |
91 | { EFI_RHT_HOME }, | |
92 | { EFI_RHT_SRV }, | |
93 | { EFI_RHT_DMCRYPT }, | |
94 | { EFI_RHT_LUKS }, | |
95 | { EFI_FREEBSD_DISKLABEL }, | |
96 | { EFI_AAPL_RAID }, | |
97 | { EFI_AAPL_RAIDOFFLINE }, | |
98 | { EFI_AAPL_BOOT }, | |
99 | { EFI_AAPL_LABEL }, | |
100 | { EFI_AAPL_TVRECOVERY }, | |
101 | { EFI_AAPL_CORESTORAGE }, | |
102 | { EFI_NETBSD_SWAP }, | |
103 | { EFI_NETBSD_FFS }, | |
104 | { EFI_NETBSD_LFS }, | |
105 | { EFI_NETBSD_RAID }, | |
106 | { EFI_NETBSD_CAT }, | |
107 | { EFI_NETBSD_CRYPT }, | |
108 | { EFI_GOOG_KERN }, | |
109 | { EFI_GOOG_ROOT }, | |
110 | { EFI_GOOG_RESV }, | |
111 | { EFI_HAIKU_BFS }, | |
112 | { EFI_MIDNIGHTBSD_BOOT }, | |
113 | { EFI_MIDNIGHTBSD_DATA }, | |
114 | { EFI_MIDNIGHTBSD_SWAP }, | |
115 | { EFI_MIDNIGHTBSD_UFS }, | |
116 | { EFI_MIDNIGHTBSD_VINUM }, | |
117 | { EFI_MIDNIGHTBSD_ZFS }, | |
118 | { EFI_CEPH_JOURNAL }, | |
119 | { EFI_CEPH_DMCRYPTJOURNAL }, | |
120 | { EFI_CEPH_OSD }, | |
121 | { EFI_CEPH_DMCRYPTOSD }, | |
122 | { EFI_CEPH_CREATE }, | |
123 | { EFI_CEPH_DMCRYPTCREATE }, | |
124 | { EFI_OPENBSD_DISKLABEL }, | |
125 | { EFI_BBRY_QNX }, | |
126 | { EFI_BELL_PLAN9 }, | |
127 | { EFI_VMW_KCORE }, | |
128 | { EFI_VMW_VMFS }, | |
129 | { EFI_VMW_RESV }, | |
130 | { EFI_RHT_ROOTX86 }, | |
131 | { EFI_RHT_ROOTAMD64 }, | |
132 | { EFI_RHT_ROOTARM }, | |
133 | { EFI_RHT_ROOTARM64 }, | |
134 | { EFI_ACRONIS_SECUREZONE }, | |
135 | { EFI_ONIE_BOOT }, | |
136 | { EFI_ONIE_CONFIG }, | |
137 | { EFI_IBM_PPRPBOOT }, | |
138 | { EFI_FREEDESKTOP_BOOT } | |
5c363129 BB |
139 | }; |
140 | ||
5c363129 | 141 | int efi_debug = 0; |
5c363129 | 142 | |
d603ed6c BB |
143 | static int efi_read(int, struct dk_gpt *); |
144 | ||
145 | /* | |
146 | * Return a 32-bit CRC of the contents of the buffer. Pre-and-post | |
147 | * one's conditioning will be handled by crc32() internally. | |
148 | */ | |
149 | static uint32_t | |
150 | efi_crc32(const unsigned char *buf, unsigned int size) | |
151 | { | |
152 | uint32_t crc = crc32(0, Z_NULL, 0); | |
153 | ||
154 | crc = crc32(crc, buf, size); | |
155 | ||
156 | return (crc); | |
157 | } | |
5c363129 BB |
158 | |
159 | static int | |
160 | read_disk_info(int fd, diskaddr_t *capacity, uint_t *lbsize) | |
161 | { | |
d603ed6c BB |
162 | int sector_size; |
163 | unsigned long long capacity_size; | |
164 | ||
d1d7e268 MK |
165 | if (ioctl(fd, BLKSSZGET, §or_size) < 0) |
166 | return (-1); | |
d603ed6c BB |
167 | |
168 | if (ioctl(fd, BLKGETSIZE64, &capacity_size) < 0) | |
169 | return (-1); | |
170 | ||
171 | *lbsize = (uint_t)sector_size; | |
172 | *capacity = (diskaddr_t)(capacity_size / sector_size); | |
173 | ||
174 | return (0); | |
175 | } | |
5c363129 | 176 | |
8e82ffba GW |
177 | /* |
178 | * Return back the device name associated with the file descriptor. The | |
179 | * caller is responsible for freeing the memory associated with the | |
180 | * returned string. | |
181 | */ | |
182 | static char * | |
183 | efi_get_devname(int fd) | |
184 | { | |
e00aae4b | 185 | char path[32]; |
8e82ffba GW |
186 | |
187 | /* | |
188 | * The libefi API only provides the open fd and not the file path. | |
189 | * To handle this realpath(3) is used to resolve the block device | |
190 | * name from /proc/self/fd/<fd>. | |
191 | */ | |
e00aae4b AZ |
192 | (void) snprintf(path, sizeof (path), "/proc/self/fd/%d", fd); |
193 | return (realpath(path, NULL)); | |
8e82ffba GW |
194 | } |
195 | ||
d603ed6c BB |
196 | static int |
197 | efi_get_info(int fd, struct dk_cinfo *dki_info) | |
198 | { | |
d603ed6c BB |
199 | char *dev_path; |
200 | int rval = 0; | |
201 | ||
d1d7e268 | 202 | memset(dki_info, 0, sizeof (*dki_info)); |
d603ed6c | 203 | |
d603ed6c BB |
204 | /* |
205 | * The simplest way to get the partition number under linux is | |
78595377 | 206 | * to parse it out of the /dev/<disk><partition> block device name. |
d603ed6c BB |
207 | * The kernel creates this using the partition number when it |
208 | * populates /dev/ so it may be trusted. The tricky bit here is | |
209 | * that the naming convention is based on the block device type. | |
210 | * So we need to take this in to account when parsing out the | |
8e82ffba | 211 | * partition information. Aside from the partition number we collect |
d603ed6c BB |
212 | * some additional device info. |
213 | */ | |
8e82ffba | 214 | dev_path = efi_get_devname(fd); |
d603ed6c BB |
215 | if (dev_path == NULL) |
216 | goto error; | |
217 | ||
218 | if ((strncmp(dev_path, "/dev/sd", 7) == 0)) { | |
219 | strcpy(dki_info->dki_cname, "sd"); | |
220 | dki_info->dki_ctype = DKC_SCSI_CCS; | |
221 | rval = sscanf(dev_path, "/dev/%[a-zA-Z]%hu", | |
d1d7e268 MK |
222 | dki_info->dki_dname, |
223 | &dki_info->dki_partition); | |
d603ed6c BB |
224 | } else if ((strncmp(dev_path, "/dev/hd", 7) == 0)) { |
225 | strcpy(dki_info->dki_cname, "hd"); | |
226 | dki_info->dki_ctype = DKC_DIRECT; | |
227 | rval = sscanf(dev_path, "/dev/%[a-zA-Z]%hu", | |
d1d7e268 MK |
228 | dki_info->dki_dname, |
229 | &dki_info->dki_partition); | |
d603ed6c BB |
230 | } else if ((strncmp(dev_path, "/dev/md", 7) == 0)) { |
231 | strcpy(dki_info->dki_cname, "pseudo"); | |
232 | dki_info->dki_ctype = DKC_MD; | |
787c455e RY |
233 | strcpy(dki_info->dki_dname, "md"); |
234 | rval = sscanf(dev_path, "/dev/md%[0-9]p%hu", | |
235 | dki_info->dki_dname + 2, | |
d1d7e268 | 236 | &dki_info->dki_partition); |
2932b6a8 RL |
237 | } else if ((strncmp(dev_path, "/dev/vd", 7) == 0)) { |
238 | strcpy(dki_info->dki_cname, "vd"); | |
239 | dki_info->dki_ctype = DKC_MD; | |
240 | rval = sscanf(dev_path, "/dev/%[a-zA-Z]%hu", | |
d1d7e268 MK |
241 | dki_info->dki_dname, |
242 | &dki_info->dki_partition); | |
541da993 RY |
243 | } else if ((strncmp(dev_path, "/dev/xvd", 8) == 0)) { |
244 | strcpy(dki_info->dki_cname, "xvd"); | |
245 | dki_info->dki_ctype = DKC_MD; | |
246 | rval = sscanf(dev_path, "/dev/%[a-zA-Z]%hu", | |
247 | dki_info->dki_dname, | |
248 | &dki_info->dki_partition); | |
9f5ba90f RY |
249 | } else if ((strncmp(dev_path, "/dev/zd", 7) == 0)) { |
250 | strcpy(dki_info->dki_cname, "zd"); | |
251 | dki_info->dki_ctype = DKC_MD; | |
232dd8b9 BB |
252 | strcpy(dki_info->dki_dname, "zd"); |
253 | rval = sscanf(dev_path, "/dev/zd%[0-9]p%hu", | |
254 | dki_info->dki_dname + 2, | |
9f5ba90f | 255 | &dki_info->dki_partition); |
d603ed6c BB |
256 | } else if ((strncmp(dev_path, "/dev/dm-", 8) == 0)) { |
257 | strcpy(dki_info->dki_cname, "pseudo"); | |
258 | dki_info->dki_ctype = DKC_VBD; | |
787c455e RY |
259 | strcpy(dki_info->dki_dname, "dm-"); |
260 | rval = sscanf(dev_path, "/dev/dm-%[0-9]p%hu", | |
261 | dki_info->dki_dname + 3, | |
d1d7e268 | 262 | &dki_info->dki_partition); |
d603ed6c BB |
263 | } else if ((strncmp(dev_path, "/dev/ram", 8) == 0)) { |
264 | strcpy(dki_info->dki_cname, "pseudo"); | |
265 | dki_info->dki_ctype = DKC_PCMCIA_MEM; | |
787c455e RY |
266 | strcpy(dki_info->dki_dname, "ram"); |
267 | rval = sscanf(dev_path, "/dev/ram%[0-9]p%hu", | |
268 | dki_info->dki_dname + 3, | |
d1d7e268 | 269 | &dki_info->dki_partition); |
d603ed6c BB |
270 | } else if ((strncmp(dev_path, "/dev/loop", 9) == 0)) { |
271 | strcpy(dki_info->dki_cname, "pseudo"); | |
272 | dki_info->dki_ctype = DKC_VBD; | |
787c455e RY |
273 | strcpy(dki_info->dki_dname, "loop"); |
274 | rval = sscanf(dev_path, "/dev/loop%[0-9]p%hu", | |
275 | dki_info->dki_dname + 4, | |
d1d7e268 | 276 | &dki_info->dki_partition); |
c66e54e9 | 277 | } else if ((strncmp(dev_path, "/dev/nvme", 9) == 0)) { |
278 | strcpy(dki_info->dki_cname, "nvme"); | |
279 | dki_info->dki_ctype = DKC_SCSI_CCS; | |
280 | strcpy(dki_info->dki_dname, "nvme"); | |
281 | (void) sscanf(dev_path, "/dev/nvme%[0-9]", | |
282 | dki_info->dki_dname + 4); | |
283 | size_t controller_length = strlen( | |
284 | dki_info->dki_dname); | |
285 | strcpy(dki_info->dki_dname + controller_length, | |
286 | "n"); | |
287 | rval = sscanf(dev_path, | |
288 | "/dev/nvme%*[0-9]n%[0-9]p%hu", | |
289 | dki_info->dki_dname + controller_length + 1, | |
290 | &dki_info->dki_partition); | |
d603ed6c BB |
291 | } else { |
292 | strcpy(dki_info->dki_dname, "unknown"); | |
293 | strcpy(dki_info->dki_cname, "unknown"); | |
294 | dki_info->dki_ctype = DKC_UNKNOWN; | |
295 | } | |
296 | ||
297 | switch (rval) { | |
298 | case 0: | |
299 | errno = EINVAL; | |
300 | goto error; | |
301 | case 1: | |
302 | dki_info->dki_partition = 0; | |
303 | } | |
304 | ||
305 | free(dev_path); | |
7e0594a3 | 306 | |
5c363129 | 307 | return (0); |
d603ed6c BB |
308 | error: |
309 | if (efi_debug) | |
310 | (void) fprintf(stderr, "DKIOCINFO errno 0x%x\n", errno); | |
311 | ||
312 | switch (errno) { | |
313 | case EIO: | |
314 | return (VT_EIO); | |
315 | case EINVAL: | |
316 | return (VT_EINVAL); | |
317 | default: | |
318 | return (VT_ERROR); | |
319 | } | |
5c363129 BB |
320 | } |
321 | ||
322 | /* | |
323 | * the number of blocks the EFI label takes up (round up to nearest | |
324 | * block) | |
325 | */ | |
326 | #define NBLOCKS(p, l) (1 + ((((p) * (int)sizeof (efi_gpe_t)) + \ | |
327 | ((l) - 1)) / (l))) | |
328 | /* number of partitions -- limited by what we can malloc */ | |
329 | #define MAX_PARTS ((4294967295UL - sizeof (struct dk_gpt)) / \ | |
330 | sizeof (struct dk_part)) | |
331 | ||
332 | int | |
333 | efi_alloc_and_init(int fd, uint32_t nparts, struct dk_gpt **vtoc) | |
334 | { | |
d603ed6c BB |
335 | diskaddr_t capacity = 0; |
336 | uint_t lbsize = 0; | |
5c363129 BB |
337 | uint_t nblocks; |
338 | size_t length; | |
339 | struct dk_gpt *vptr; | |
340 | struct uuid uuid; | |
d603ed6c | 341 | struct dk_cinfo dki_info; |
5c363129 | 342 | |
b3b4f547 | 343 | if (read_disk_info(fd, &capacity, &lbsize) != 0) |
5c363129 | 344 | return (-1); |
b3b4f547 | 345 | |
b3b4f547 | 346 | if (efi_get_info(fd, &dki_info) != 0) |
d603ed6c | 347 | return (-1); |
d603ed6c BB |
348 | |
349 | if (dki_info.dki_partition != 0) | |
350 | return (-1); | |
351 | ||
352 | if ((dki_info.dki_ctype == DKC_PCMCIA_MEM) || | |
353 | (dki_info.dki_ctype == DKC_VBD) || | |
354 | (dki_info.dki_ctype == DKC_UNKNOWN)) | |
355 | return (-1); | |
5c363129 BB |
356 | |
357 | nblocks = NBLOCKS(nparts, lbsize); | |
358 | if ((nblocks * lbsize) < EFI_MIN_ARRAY_SIZE + lbsize) { | |
359 | /* 16K plus one block for the GPT */ | |
360 | nblocks = EFI_MIN_ARRAY_SIZE / lbsize + 1; | |
361 | } | |
362 | ||
363 | if (nparts > MAX_PARTS) { | |
364 | if (efi_debug) { | |
365 | (void) fprintf(stderr, | |
366 | "the maximum number of partitions supported is %lu\n", | |
367 | MAX_PARTS); | |
368 | } | |
369 | return (-1); | |
370 | } | |
371 | ||
372 | length = sizeof (struct dk_gpt) + | |
373 | sizeof (struct dk_part) * (nparts - 1); | |
374 | ||
fe20400d BB |
375 | vptr = calloc(1, length); |
376 | if (vptr == NULL) | |
5c363129 BB |
377 | return (-1); |
378 | ||
fe20400d | 379 | *vtoc = vptr; |
5c363129 BB |
380 | |
381 | vptr->efi_version = EFI_VERSION_CURRENT; | |
382 | vptr->efi_lbasize = lbsize; | |
383 | vptr->efi_nparts = nparts; | |
384 | /* | |
385 | * add one block here for the PMBR; on disks with a 512 byte | |
386 | * block size and 128 or fewer partitions, efi_first_u_lba | |
387 | * should work out to "34" | |
388 | */ | |
389 | vptr->efi_first_u_lba = nblocks + 1; | |
390 | vptr->efi_last_lba = capacity - 1; | |
391 | vptr->efi_altern_lba = capacity -1; | |
392 | vptr->efi_last_u_lba = vptr->efi_last_lba - nblocks; | |
393 | ||
394 | (void) uuid_generate((uchar_t *)&uuid); | |
395 | UUID_LE_CONVERT(vptr->efi_disk_uguid, uuid); | |
396 | return (0); | |
397 | } | |
398 | ||
399 | /* | |
400 | * Read EFI - return partition number upon success. | |
401 | */ | |
402 | int | |
403 | efi_alloc_and_read(int fd, struct dk_gpt **vtoc) | |
404 | { | |
405 | int rval; | |
406 | uint32_t nparts; | |
407 | int length; | |
fe20400d | 408 | struct dk_gpt *vptr; |
5c363129 BB |
409 | |
410 | /* figure out the number of entries that would fit into 16K */ | |
411 | nparts = EFI_MIN_ARRAY_SIZE / sizeof (efi_gpe_t); | |
412 | length = (int) sizeof (struct dk_gpt) + | |
413 | (int) sizeof (struct dk_part) * (nparts - 1); | |
fe20400d BB |
414 | vptr = calloc(1, length); |
415 | ||
416 | if (vptr == NULL) | |
5c363129 BB |
417 | return (VT_ERROR); |
418 | ||
fe20400d BB |
419 | vptr->efi_nparts = nparts; |
420 | rval = efi_read(fd, vptr); | |
5c363129 | 421 | |
fe20400d | 422 | if ((rval == VT_EINVAL) && vptr->efi_nparts > nparts) { |
5c363129 BB |
423 | void *tmp; |
424 | length = (int) sizeof (struct dk_gpt) + | |
fe20400d | 425 | (int) sizeof (struct dk_part) * (vptr->efi_nparts - 1); |
fe20400d | 426 | if ((tmp = realloc(vptr, length)) == NULL) { |
6fc1ce07 | 427 | /* cppcheck-suppress doubleFree */ |
fe20400d | 428 | free(vptr); |
5c363129 BB |
429 | *vtoc = NULL; |
430 | return (VT_ERROR); | |
431 | } else { | |
fe20400d BB |
432 | vptr = tmp; |
433 | rval = efi_read(fd, vptr); | |
5c363129 BB |
434 | } |
435 | } | |
436 | ||
437 | if (rval < 0) { | |
438 | if (efi_debug) { | |
439 | (void) fprintf(stderr, | |
440 | "read of EFI table failed, rval=%d\n", rval); | |
441 | } | |
fe20400d | 442 | free(vptr); |
5c363129 | 443 | *vtoc = NULL; |
fe20400d BB |
444 | } else { |
445 | *vtoc = vptr; | |
5c363129 BB |
446 | } |
447 | ||
448 | return (rval); | |
449 | } | |
450 | ||
451 | static int | |
452 | efi_ioctl(int fd, int cmd, dk_efi_t *dk_ioc) | |
453 | { | |
454 | void *data = dk_ioc->dki_data; | |
455 | int error; | |
d603ed6c BB |
456 | diskaddr_t capacity; |
457 | uint_t lbsize; | |
458 | ||
459 | /* | |
460 | * When the IO is not being performed in kernel as an ioctl we need | |
461 | * to know the sector size so we can seek to the proper byte offset. | |
462 | */ | |
463 | if (read_disk_info(fd, &capacity, &lbsize) == -1) { | |
464 | if (efi_debug) | |
d1d7e268 | 465 | fprintf(stderr, "unable to read disk info: %d", errno); |
d603ed6c BB |
466 | |
467 | errno = EIO; | |
d1d7e268 | 468 | return (-1); |
d603ed6c BB |
469 | } |
470 | ||
471 | switch (cmd) { | |
472 | case DKIOCGETEFI: | |
473 | if (lbsize == 0) { | |
474 | if (efi_debug) | |
475 | (void) fprintf(stderr, "DKIOCGETEFI assuming " | |
d1d7e268 | 476 | "LBA %d bytes\n", DEV_BSIZE); |
d603ed6c BB |
477 | |
478 | lbsize = DEV_BSIZE; | |
479 | } | |
480 | ||
481 | error = lseek(fd, dk_ioc->dki_lba * lbsize, SEEK_SET); | |
482 | if (error == -1) { | |
483 | if (efi_debug) | |
484 | (void) fprintf(stderr, "DKIOCGETEFI lseek " | |
d1d7e268 MK |
485 | "error: %d\n", errno); |
486 | return (error); | |
d603ed6c BB |
487 | } |
488 | ||
489 | error = read(fd, data, dk_ioc->dki_length); | |
490 | if (error == -1) { | |
491 | if (efi_debug) | |
492 | (void) fprintf(stderr, "DKIOCGETEFI read " | |
d1d7e268 MK |
493 | "error: %d\n", errno); |
494 | return (error); | |
d603ed6c | 495 | } |
5c363129 | 496 | |
d603ed6c BB |
497 | if (error != dk_ioc->dki_length) { |
498 | if (efi_debug) | |
499 | (void) fprintf(stderr, "DKIOCGETEFI short " | |
d1d7e268 | 500 | "read of %d bytes\n", error); |
d603ed6c | 501 | errno = EIO; |
d1d7e268 | 502 | return (-1); |
d603ed6c BB |
503 | } |
504 | error = 0; | |
505 | break; | |
506 | ||
507 | case DKIOCSETEFI: | |
508 | if (lbsize == 0) { | |
509 | if (efi_debug) | |
510 | (void) fprintf(stderr, "DKIOCSETEFI unknown " | |
d1d7e268 | 511 | "LBA size\n"); |
d603ed6c | 512 | errno = EIO; |
d1d7e268 | 513 | return (-1); |
d603ed6c BB |
514 | } |
515 | ||
516 | error = lseek(fd, dk_ioc->dki_lba * lbsize, SEEK_SET); | |
517 | if (error == -1) { | |
518 | if (efi_debug) | |
519 | (void) fprintf(stderr, "DKIOCSETEFI lseek " | |
d1d7e268 MK |
520 | "error: %d\n", errno); |
521 | return (error); | |
d603ed6c BB |
522 | } |
523 | ||
524 | error = write(fd, data, dk_ioc->dki_length); | |
525 | if (error == -1) { | |
526 | if (efi_debug) | |
527 | (void) fprintf(stderr, "DKIOCSETEFI write " | |
d1d7e268 MK |
528 | "error: %d\n", errno); |
529 | return (error); | |
d603ed6c BB |
530 | } |
531 | ||
532 | if (error != dk_ioc->dki_length) { | |
533 | if (efi_debug) | |
534 | (void) fprintf(stderr, "DKIOCSETEFI short " | |
d1d7e268 | 535 | "write of %d bytes\n", error); |
d603ed6c | 536 | errno = EIO; |
d1d7e268 | 537 | return (-1); |
d603ed6c BB |
538 | } |
539 | ||
540 | /* Sync the new EFI table to disk */ | |
541 | error = fsync(fd); | |
542 | if (error == -1) | |
d1d7e268 | 543 | return (error); |
d603ed6c BB |
544 | |
545 | /* Ensure any local disk cache is also flushed */ | |
546 | if (ioctl(fd, BLKFLSBUF, 0) == -1) | |
d1d7e268 | 547 | return (error); |
d603ed6c BB |
548 | |
549 | error = 0; | |
550 | break; | |
551 | ||
552 | default: | |
553 | if (efi_debug) | |
554 | (void) fprintf(stderr, "unsupported ioctl()\n"); | |
555 | ||
556 | errno = EIO; | |
d1d7e268 | 557 | return (-1); |
d603ed6c | 558 | } |
7e0594a3 | 559 | |
5c363129 BB |
560 | return (error); |
561 | } | |
562 | ||
d1d7e268 MK |
563 | int |
564 | efi_rescan(int fd) | |
d603ed6c | 565 | { |
d09a99f9 | 566 | int retry = 10; |
d603ed6c BB |
567 | |
568 | /* Notify the kernel a devices partition table has been updated */ | |
6a42939f | 569 | while (ioctl(fd, BLKRRPART) != 0) { |
d09a99f9 | 570 | if ((--retry == 0) || (errno != EBUSY)) { |
d603ed6c | 571 | (void) fprintf(stderr, "the kernel failed to rescan " |
d1d7e268 | 572 | "the partition table: %d\n", errno); |
d603ed6c BB |
573 | return (-1); |
574 | } | |
d09a99f9 | 575 | usleep(50000); |
d603ed6c BB |
576 | } |
577 | ||
578 | return (0); | |
579 | } | |
d603ed6c | 580 | |
5c363129 BB |
581 | static int |
582 | check_label(int fd, dk_efi_t *dk_ioc) | |
583 | { | |
584 | efi_gpt_t *efi; | |
585 | uint_t crc; | |
586 | ||
587 | if (efi_ioctl(fd, DKIOCGETEFI, dk_ioc) == -1) { | |
588 | switch (errno) { | |
589 | case EIO: | |
590 | return (VT_EIO); | |
591 | default: | |
592 | return (VT_ERROR); | |
593 | } | |
594 | } | |
595 | efi = dk_ioc->dki_data; | |
596 | if (efi->efi_gpt_Signature != LE_64(EFI_SIGNATURE)) { | |
597 | if (efi_debug) | |
598 | (void) fprintf(stderr, | |
599 | "Bad EFI signature: 0x%llx != 0x%llx\n", | |
600 | (long long)efi->efi_gpt_Signature, | |
601 | (long long)LE_64(EFI_SIGNATURE)); | |
602 | return (VT_EINVAL); | |
603 | } | |
604 | ||
605 | /* | |
606 | * check CRC of the header; the size of the header should | |
607 | * never be larger than one block | |
608 | */ | |
609 | crc = efi->efi_gpt_HeaderCRC32; | |
610 | efi->efi_gpt_HeaderCRC32 = 0; | |
7a023273 | 611 | len_t headerSize = (len_t)LE_32(efi->efi_gpt_HeaderSize); |
5c363129 | 612 | |
d1d7e268 | 613 | if (headerSize < EFI_MIN_LABEL_SIZE || headerSize > EFI_LABEL_SIZE) { |
7a023273 ZB |
614 | if (efi_debug) |
615 | (void) fprintf(stderr, | |
25df831b | 616 | "Invalid EFI HeaderSize %llu. Assuming %d.\n", |
617 | headerSize, EFI_MIN_LABEL_SIZE); | |
7a023273 ZB |
618 | } |
619 | ||
620 | if ((headerSize > dk_ioc->dki_length) || | |
621 | crc != LE_32(efi_crc32((unsigned char *)efi, headerSize))) { | |
5c363129 BB |
622 | if (efi_debug) |
623 | (void) fprintf(stderr, | |
624 | "Bad EFI CRC: 0x%x != 0x%x\n", | |
7a023273 ZB |
625 | crc, LE_32(efi_crc32((unsigned char *)efi, |
626 | headerSize))); | |
5c363129 BB |
627 | return (VT_EINVAL); |
628 | } | |
629 | ||
630 | return (0); | |
631 | } | |
632 | ||
633 | static int | |
634 | efi_read(int fd, struct dk_gpt *vtoc) | |
635 | { | |
636 | int i, j; | |
637 | int label_len; | |
638 | int rval = 0; | |
639 | int md_flag = 0; | |
640 | int vdc_flag = 0; | |
d603ed6c BB |
641 | diskaddr_t capacity = 0; |
642 | uint_t lbsize = 0; | |
5c363129 BB |
643 | struct dk_minfo disk_info; |
644 | dk_efi_t dk_ioc; | |
645 | efi_gpt_t *efi; | |
646 | efi_gpe_t *efi_parts; | |
647 | struct dk_cinfo dki_info; | |
648 | uint32_t user_length; | |
649 | boolean_t legacy_label = B_FALSE; | |
650 | ||
651 | /* | |
652 | * get the partition number for this file descriptor. | |
653 | */ | |
d603ed6c | 654 | if ((rval = efi_get_info(fd, &dki_info)) != 0) |
d1d7e268 | 655 | return (rval); |
d603ed6c | 656 | |
5c363129 BB |
657 | if ((strncmp(dki_info.dki_cname, "pseudo", 7) == 0) && |
658 | (strncmp(dki_info.dki_dname, "md", 3) == 0)) { | |
659 | md_flag++; | |
660 | } else if ((strncmp(dki_info.dki_cname, "vdc", 4) == 0) && | |
661 | (strncmp(dki_info.dki_dname, "vdc", 4) == 0)) { | |
662 | /* | |
663 | * The controller and drive name "vdc" (virtual disk client) | |
664 | * indicates a LDoms virtual disk. | |
665 | */ | |
666 | vdc_flag++; | |
667 | } | |
668 | ||
669 | /* get the LBA size */ | |
d603ed6c | 670 | if (read_disk_info(fd, &capacity, &lbsize) == -1) { |
5c363129 BB |
671 | if (efi_debug) { |
672 | (void) fprintf(stderr, | |
d1d7e268 MK |
673 | "unable to read disk info: %d", |
674 | errno); | |
5c363129 | 675 | } |
d603ed6c | 676 | return (VT_EINVAL); |
5c363129 | 677 | } |
d603ed6c BB |
678 | |
679 | disk_info.dki_lbsize = lbsize; | |
680 | disk_info.dki_capacity = capacity; | |
681 | ||
5c363129 BB |
682 | if (disk_info.dki_lbsize == 0) { |
683 | if (efi_debug) { | |
684 | (void) fprintf(stderr, | |
685 | "efi_read: assuming LBA 512 bytes\n"); | |
686 | } | |
687 | disk_info.dki_lbsize = DEV_BSIZE; | |
688 | } | |
689 | /* | |
690 | * Read the EFI GPT to figure out how many partitions we need | |
691 | * to deal with. | |
692 | */ | |
693 | dk_ioc.dki_lba = 1; | |
694 | if (NBLOCKS(vtoc->efi_nparts, disk_info.dki_lbsize) < 34) { | |
695 | label_len = EFI_MIN_ARRAY_SIZE + disk_info.dki_lbsize; | |
696 | } else { | |
697 | label_len = vtoc->efi_nparts * (int) sizeof (efi_gpe_t) + | |
698 | disk_info.dki_lbsize; | |
699 | if (label_len % disk_info.dki_lbsize) { | |
700 | /* pad to physical sector size */ | |
701 | label_len += disk_info.dki_lbsize; | |
702 | label_len &= ~(disk_info.dki_lbsize - 1); | |
703 | } | |
704 | } | |
705 | ||
d603ed6c | 706 | if (posix_memalign((void **)&dk_ioc.dki_data, |
d1d7e268 | 707 | disk_info.dki_lbsize, label_len)) |
5c363129 BB |
708 | return (VT_ERROR); |
709 | ||
d603ed6c | 710 | memset(dk_ioc.dki_data, 0, label_len); |
5c363129 BB |
711 | dk_ioc.dki_length = disk_info.dki_lbsize; |
712 | user_length = vtoc->efi_nparts; | |
713 | efi = dk_ioc.dki_data; | |
714 | if (md_flag) { | |
715 | dk_ioc.dki_length = label_len; | |
716 | if (efi_ioctl(fd, DKIOCGETEFI, &dk_ioc) == -1) { | |
717 | switch (errno) { | |
718 | case EIO: | |
719 | return (VT_EIO); | |
720 | default: | |
721 | return (VT_ERROR); | |
722 | } | |
723 | } | |
724 | } else if ((rval = check_label(fd, &dk_ioc)) == VT_EINVAL) { | |
725 | /* | |
726 | * No valid label here; try the alternate. Note that here | |
727 | * we just read GPT header and save it into dk_ioc.data, | |
728 | * Later, we will read GUID partition entry array if we | |
729 | * can get valid GPT header. | |
730 | */ | |
731 | ||
732 | /* | |
733 | * This is a workaround for legacy systems. In the past, the | |
734 | * last sector of SCSI disk was invisible on x86 platform. At | |
735 | * that time, backup label was saved on the next to the last | |
736 | * sector. It is possible for users to move a disk from previous | |
737 | * solaris system to present system. Here, we attempt to search | |
738 | * legacy backup EFI label first. | |
739 | */ | |
740 | dk_ioc.dki_lba = disk_info.dki_capacity - 2; | |
741 | dk_ioc.dki_length = disk_info.dki_lbsize; | |
742 | rval = check_label(fd, &dk_ioc); | |
743 | if (rval == VT_EINVAL) { | |
744 | /* | |
745 | * we didn't find legacy backup EFI label, try to | |
746 | * search backup EFI label in the last block. | |
747 | */ | |
748 | dk_ioc.dki_lba = disk_info.dki_capacity - 1; | |
749 | dk_ioc.dki_length = disk_info.dki_lbsize; | |
750 | rval = check_label(fd, &dk_ioc); | |
751 | if (rval == 0) { | |
752 | legacy_label = B_TRUE; | |
753 | if (efi_debug) | |
754 | (void) fprintf(stderr, | |
755 | "efi_read: primary label corrupt; " | |
756 | "using EFI backup label located on" | |
757 | " the last block\n"); | |
758 | } | |
759 | } else { | |
760 | if ((efi_debug) && (rval == 0)) | |
761 | (void) fprintf(stderr, "efi_read: primary label" | |
762 | " corrupt; using legacy EFI backup label " | |
763 | " located on the next to last block\n"); | |
764 | } | |
765 | ||
766 | if (rval == 0) { | |
767 | dk_ioc.dki_lba = LE_64(efi->efi_gpt_PartitionEntryLBA); | |
768 | vtoc->efi_flags |= EFI_GPT_PRIMARY_CORRUPT; | |
769 | vtoc->efi_nparts = | |
770 | LE_32(efi->efi_gpt_NumberOfPartitionEntries); | |
771 | /* | |
772 | * Partition tables are between backup GPT header | |
773 | * table and ParitionEntryLBA (the starting LBA of | |
774 | * the GUID partition entries array). Now that we | |
775 | * already got valid GPT header and saved it in | |
776 | * dk_ioc.dki_data, we try to get GUID partition | |
777 | * entry array here. | |
778 | */ | |
779 | /* LINTED */ | |
780 | dk_ioc.dki_data = (efi_gpt_t *)((char *)dk_ioc.dki_data | |
781 | + disk_info.dki_lbsize); | |
782 | if (legacy_label) | |
783 | dk_ioc.dki_length = disk_info.dki_capacity - 1 - | |
784 | dk_ioc.dki_lba; | |
785 | else | |
786 | dk_ioc.dki_length = disk_info.dki_capacity - 2 - | |
787 | dk_ioc.dki_lba; | |
788 | dk_ioc.dki_length *= disk_info.dki_lbsize; | |
789 | if (dk_ioc.dki_length > | |
790 | ((len_t)label_len - sizeof (*dk_ioc.dki_data))) { | |
791 | rval = VT_EINVAL; | |
792 | } else { | |
793 | /* | |
794 | * read GUID partition entry array | |
795 | */ | |
796 | rval = efi_ioctl(fd, DKIOCGETEFI, &dk_ioc); | |
797 | } | |
798 | } | |
799 | ||
800 | } else if (rval == 0) { | |
801 | ||
802 | dk_ioc.dki_lba = LE_64(efi->efi_gpt_PartitionEntryLBA); | |
803 | /* LINTED */ | |
804 | dk_ioc.dki_data = (efi_gpt_t *)((char *)dk_ioc.dki_data | |
805 | + disk_info.dki_lbsize); | |
806 | dk_ioc.dki_length = label_len - disk_info.dki_lbsize; | |
807 | rval = efi_ioctl(fd, DKIOCGETEFI, &dk_ioc); | |
808 | ||
809 | } else if (vdc_flag && rval == VT_ERROR && errno == EINVAL) { | |
810 | /* | |
811 | * When the device is a LDoms virtual disk, the DKIOCGETEFI | |
812 | * ioctl can fail with EINVAL if the virtual disk backend | |
813 | * is a ZFS volume serviced by a domain running an old version | |
814 | * of Solaris. This is because the DKIOCGETEFI ioctl was | |
815 | * initially incorrectly implemented for a ZFS volume and it | |
816 | * expected the GPT and GPE to be retrieved with a single ioctl. | |
817 | * So we try to read the GPT and the GPE using that old style | |
818 | * ioctl. | |
819 | */ | |
820 | dk_ioc.dki_lba = 1; | |
821 | dk_ioc.dki_length = label_len; | |
822 | rval = check_label(fd, &dk_ioc); | |
823 | } | |
824 | ||
825 | if (rval < 0) { | |
826 | free(efi); | |
827 | return (rval); | |
828 | } | |
829 | ||
830 | /* LINTED -- always longlong aligned */ | |
831 | efi_parts = (efi_gpe_t *)(((char *)efi) + disk_info.dki_lbsize); | |
832 | ||
833 | /* | |
834 | * Assemble this into a "dk_gpt" struct for easier | |
835 | * digestibility by applications. | |
836 | */ | |
837 | vtoc->efi_version = LE_32(efi->efi_gpt_Revision); | |
838 | vtoc->efi_nparts = LE_32(efi->efi_gpt_NumberOfPartitionEntries); | |
839 | vtoc->efi_part_size = LE_32(efi->efi_gpt_SizeOfPartitionEntry); | |
840 | vtoc->efi_lbasize = disk_info.dki_lbsize; | |
841 | vtoc->efi_last_lba = disk_info.dki_capacity - 1; | |
842 | vtoc->efi_first_u_lba = LE_64(efi->efi_gpt_FirstUsableLBA); | |
843 | vtoc->efi_last_u_lba = LE_64(efi->efi_gpt_LastUsableLBA); | |
844 | vtoc->efi_altern_lba = LE_64(efi->efi_gpt_AlternateLBA); | |
845 | UUID_LE_CONVERT(vtoc->efi_disk_uguid, efi->efi_gpt_DiskGUID); | |
846 | ||
847 | /* | |
848 | * If the array the user passed in is too small, set the length | |
849 | * to what it needs to be and return | |
850 | */ | |
851 | if (user_length < vtoc->efi_nparts) { | |
852 | return (VT_EINVAL); | |
853 | } | |
854 | ||
855 | for (i = 0; i < vtoc->efi_nparts; i++) { | |
5c363129 BB |
856 | UUID_LE_CONVERT(vtoc->efi_parts[i].p_guid, |
857 | efi_parts[i].efi_gpe_PartitionTypeGUID); | |
858 | ||
859 | for (j = 0; | |
860 | j < sizeof (conversion_array) | |
861 | / sizeof (struct uuid_to_ptag); j++) { | |
862 | ||
861166b0 | 863 | if (memcmp(&vtoc->efi_parts[i].p_guid, |
5c363129 BB |
864 | &conversion_array[j].uuid, |
865 | sizeof (struct uuid)) == 0) { | |
866 | vtoc->efi_parts[i].p_tag = j; | |
867 | break; | |
868 | } | |
869 | } | |
870 | if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) | |
871 | continue; | |
872 | vtoc->efi_parts[i].p_flag = | |
873 | LE_16(efi_parts[i].efi_gpe_Attributes.PartitionAttrs); | |
874 | vtoc->efi_parts[i].p_start = | |
875 | LE_64(efi_parts[i].efi_gpe_StartingLBA); | |
876 | vtoc->efi_parts[i].p_size = | |
877 | LE_64(efi_parts[i].efi_gpe_EndingLBA) - | |
878 | vtoc->efi_parts[i].p_start + 1; | |
879 | for (j = 0; j < EFI_PART_NAME_LEN; j++) { | |
880 | vtoc->efi_parts[i].p_name[j] = | |
881 | (uchar_t)LE_16( | |
882 | efi_parts[i].efi_gpe_PartitionName[j]); | |
883 | } | |
884 | ||
885 | UUID_LE_CONVERT(vtoc->efi_parts[i].p_uguid, | |
886 | efi_parts[i].efi_gpe_UniquePartitionGUID); | |
887 | } | |
888 | free(efi); | |
889 | ||
890 | return (dki_info.dki_partition); | |
891 | } | |
892 | ||
893 | /* writes a "protective" MBR */ | |
894 | static int | |
895 | write_pmbr(int fd, struct dk_gpt *vtoc) | |
896 | { | |
897 | dk_efi_t dk_ioc; | |
898 | struct mboot mb; | |
899 | uchar_t *cp; | |
900 | diskaddr_t size_in_lba; | |
901 | uchar_t *buf; | |
902 | int len; | |
903 | ||
904 | len = (vtoc->efi_lbasize == 0) ? sizeof (mb) : vtoc->efi_lbasize; | |
d603ed6c BB |
905 | if (posix_memalign((void **)&buf, len, len)) |
906 | return (VT_ERROR); | |
5c363129 BB |
907 | |
908 | /* | |
909 | * Preserve any boot code and disk signature if the first block is | |
910 | * already an MBR. | |
911 | */ | |
d603ed6c | 912 | memset(buf, 0, len); |
5c363129 BB |
913 | dk_ioc.dki_lba = 0; |
914 | dk_ioc.dki_length = len; | |
915 | /* LINTED -- always longlong aligned */ | |
916 | dk_ioc.dki_data = (efi_gpt_t *)buf; | |
917 | if (efi_ioctl(fd, DKIOCGETEFI, &dk_ioc) == -1) { | |
861166b0 | 918 | memset(&mb, 0, sizeof (mb)); |
5c363129 BB |
919 | mb.signature = LE_16(MBB_MAGIC); |
920 | } else { | |
f9f431cd | 921 | (void) memcpy(&mb, buf, sizeof (mb)); |
5c363129 | 922 | if (mb.signature != LE_16(MBB_MAGIC)) { |
861166b0 | 923 | memset(&mb, 0, sizeof (mb)); |
5c363129 BB |
924 | mb.signature = LE_16(MBB_MAGIC); |
925 | } | |
926 | } | |
927 | ||
861166b0 | 928 | memset(&mb.parts, 0, sizeof (mb.parts)); |
5c363129 BB |
929 | cp = (uchar_t *)&mb.parts[0]; |
930 | /* bootable or not */ | |
931 | *cp++ = 0; | |
932 | /* beginning CHS; 0xffffff if not representable */ | |
933 | *cp++ = 0xff; | |
934 | *cp++ = 0xff; | |
935 | *cp++ = 0xff; | |
936 | /* OS type */ | |
937 | *cp++ = EFI_PMBR; | |
938 | /* ending CHS; 0xffffff if not representable */ | |
939 | *cp++ = 0xff; | |
940 | *cp++ = 0xff; | |
941 | *cp++ = 0xff; | |
942 | /* starting LBA: 1 (little endian format) by EFI definition */ | |
943 | *cp++ = 0x01; | |
944 | *cp++ = 0x00; | |
945 | *cp++ = 0x00; | |
946 | *cp++ = 0x00; | |
947 | /* ending LBA: last block on the disk (little endian format) */ | |
948 | size_in_lba = vtoc->efi_last_lba; | |
949 | if (size_in_lba < 0xffffffff) { | |
950 | *cp++ = (size_in_lba & 0x000000ff); | |
951 | *cp++ = (size_in_lba & 0x0000ff00) >> 8; | |
952 | *cp++ = (size_in_lba & 0x00ff0000) >> 16; | |
953 | *cp++ = (size_in_lba & 0xff000000) >> 24; | |
954 | } else { | |
955 | *cp++ = 0xff; | |
956 | *cp++ = 0xff; | |
957 | *cp++ = 0xff; | |
958 | *cp++ = 0xff; | |
959 | } | |
960 | ||
f9f431cd | 961 | (void) memcpy(buf, &mb, sizeof (mb)); |
5c363129 BB |
962 | /* LINTED -- always longlong aligned */ |
963 | dk_ioc.dki_data = (efi_gpt_t *)buf; | |
964 | dk_ioc.dki_lba = 0; | |
965 | dk_ioc.dki_length = len; | |
966 | if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { | |
967 | free(buf); | |
968 | switch (errno) { | |
969 | case EIO: | |
970 | return (VT_EIO); | |
971 | case EINVAL: | |
972 | return (VT_EINVAL); | |
973 | default: | |
974 | return (VT_ERROR); | |
975 | } | |
976 | } | |
977 | free(buf); | |
978 | return (0); | |
979 | } | |
980 | ||
981 | /* make sure the user specified something reasonable */ | |
982 | static int | |
983 | check_input(struct dk_gpt *vtoc) | |
984 | { | |
985 | int resv_part = -1; | |
986 | int i, j; | |
987 | diskaddr_t istart, jstart, isize, jsize, endsect; | |
988 | ||
989 | /* | |
990 | * Sanity-check the input (make sure no partitions overlap) | |
991 | */ | |
992 | for (i = 0; i < vtoc->efi_nparts; i++) { | |
993 | /* It can't be unassigned and have an actual size */ | |
994 | if ((vtoc->efi_parts[i].p_tag == V_UNASSIGNED) && | |
995 | (vtoc->efi_parts[i].p_size != 0)) { | |
996 | if (efi_debug) { | |
d603ed6c BB |
997 | (void) fprintf(stderr, "partition %d is " |
998 | "\"unassigned\" but has a size of %llu", | |
999 | i, vtoc->efi_parts[i].p_size); | |
5c363129 BB |
1000 | } |
1001 | return (VT_EINVAL); | |
1002 | } | |
1003 | if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) { | |
1004 | if (uuid_is_null((uchar_t *)&vtoc->efi_parts[i].p_guid)) | |
1005 | continue; | |
1006 | /* we have encountered an unknown uuid */ | |
1007 | vtoc->efi_parts[i].p_tag = 0xff; | |
1008 | } | |
1009 | if (vtoc->efi_parts[i].p_tag == V_RESERVED) { | |
1010 | if (resv_part != -1) { | |
1011 | if (efi_debug) { | |
d603ed6c BB |
1012 | (void) fprintf(stderr, "found " |
1013 | "duplicate reserved partition " | |
1014 | "at %d\n", i); | |
5c363129 BB |
1015 | } |
1016 | return (VT_EINVAL); | |
1017 | } | |
1018 | resv_part = i; | |
1019 | } | |
1020 | if ((vtoc->efi_parts[i].p_start < vtoc->efi_first_u_lba) || | |
1021 | (vtoc->efi_parts[i].p_start > vtoc->efi_last_u_lba)) { | |
1022 | if (efi_debug) { | |
1023 | (void) fprintf(stderr, | |
1024 | "Partition %d starts at %llu. ", | |
1025 | i, | |
1026 | vtoc->efi_parts[i].p_start); | |
1027 | (void) fprintf(stderr, | |
1028 | "It must be between %llu and %llu.\n", | |
1029 | vtoc->efi_first_u_lba, | |
1030 | vtoc->efi_last_u_lba); | |
1031 | } | |
1032 | return (VT_EINVAL); | |
1033 | } | |
1034 | if ((vtoc->efi_parts[i].p_start + | |
1035 | vtoc->efi_parts[i].p_size < | |
1036 | vtoc->efi_first_u_lba) || | |
1037 | (vtoc->efi_parts[i].p_start + | |
1038 | vtoc->efi_parts[i].p_size > | |
1039 | vtoc->efi_last_u_lba + 1)) { | |
1040 | if (efi_debug) { | |
1041 | (void) fprintf(stderr, | |
1042 | "Partition %d ends at %llu. ", | |
1043 | i, | |
1044 | vtoc->efi_parts[i].p_start + | |
1045 | vtoc->efi_parts[i].p_size); | |
1046 | (void) fprintf(stderr, | |
1047 | "It must be between %llu and %llu.\n", | |
1048 | vtoc->efi_first_u_lba, | |
1049 | vtoc->efi_last_u_lba); | |
1050 | } | |
1051 | return (VT_EINVAL); | |
1052 | } | |
1053 | ||
1054 | for (j = 0; j < vtoc->efi_nparts; j++) { | |
1055 | isize = vtoc->efi_parts[i].p_size; | |
1056 | jsize = vtoc->efi_parts[j].p_size; | |
1057 | istart = vtoc->efi_parts[i].p_start; | |
1058 | jstart = vtoc->efi_parts[j].p_start; | |
1059 | if ((i != j) && (isize != 0) && (jsize != 0)) { | |
1060 | endsect = jstart + jsize -1; | |
1061 | if ((jstart <= istart) && | |
1062 | (istart <= endsect)) { | |
1063 | if (efi_debug) { | |
1064 | (void) fprintf(stderr, | |
d603ed6c BB |
1065 | "Partition %d overlaps " |
1066 | "partition %d.", i, j); | |
5c363129 BB |
1067 | } |
1068 | return (VT_EINVAL); | |
1069 | } | |
1070 | } | |
1071 | } | |
1072 | } | |
1073 | /* just a warning for now */ | |
1074 | if ((resv_part == -1) && efi_debug) { | |
1075 | (void) fprintf(stderr, | |
1076 | "no reserved partition found\n"); | |
1077 | } | |
1078 | return (0); | |
1079 | } | |
1080 | ||
8e82ffba GW |
1081 | static int |
1082 | call_blkpg_ioctl(int fd, int command, diskaddr_t start, | |
1083 | diskaddr_t size, uint_t pno) | |
1084 | { | |
1085 | struct blkpg_ioctl_arg ioctl_arg; | |
1086 | struct blkpg_partition linux_part; | |
1087 | memset(&linux_part, 0, sizeof (linux_part)); | |
1088 | ||
1089 | char *path = efi_get_devname(fd); | |
1090 | if (path == NULL) { | |
1091 | (void) fprintf(stderr, "failed to retrieve device name\n"); | |
1092 | return (VT_EINVAL); | |
1093 | } | |
1094 | ||
1095 | linux_part.start = start; | |
1096 | linux_part.length = size; | |
1097 | linux_part.pno = pno; | |
1098 | snprintf(linux_part.devname, BLKPG_DEVNAMELTH - 1, "%s%u", path, pno); | |
1099 | linux_part.devname[BLKPG_DEVNAMELTH - 1] = '\0'; | |
1100 | free(path); | |
1101 | ||
1102 | ioctl_arg.op = command; | |
1103 | ioctl_arg.flags = 0; | |
1104 | ioctl_arg.datalen = sizeof (struct blkpg_partition); | |
1105 | ioctl_arg.data = &linux_part; | |
1106 | ||
1107 | return (ioctl(fd, BLKPG, &ioctl_arg)); | |
1108 | } | |
1109 | ||
5c363129 BB |
1110 | /* |
1111 | * add all the unallocated space to the current label | |
1112 | */ | |
1113 | int | |
1114 | efi_use_whole_disk(int fd) | |
1115 | { | |
8e82ffba GW |
1116 | struct dk_gpt *efi_label = NULL; |
1117 | int rval; | |
1118 | int i; | |
1119 | uint_t resv_index = 0, data_index = 0; | |
1120 | diskaddr_t resv_start = 0, data_start = 0; | |
1121 | diskaddr_t data_size, limit, difference; | |
1122 | boolean_t sync_needed = B_FALSE; | |
1123 | uint_t nblocks; | |
5c363129 BB |
1124 | |
1125 | rval = efi_alloc_and_read(fd, &efi_label); | |
1126 | if (rval < 0) { | |
a64f903b GN |
1127 | if (efi_label != NULL) |
1128 | efi_free(efi_label); | |
5c363129 BB |
1129 | return (rval); |
1130 | } | |
1131 | ||
475ebd76 PS |
1132 | /* |
1133 | * Find the last physically non-zero partition. | |
1134 | * This should be the reserved partition. | |
1135 | */ | |
1136 | for (i = 0; i < efi_label->efi_nparts; i ++) { | |
1137 | if (resv_start < efi_label->efi_parts[i].p_start) { | |
1138 | resv_start = efi_label->efi_parts[i].p_start; | |
1139 | resv_index = i; | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | /* | |
1144 | * Find the last physically non-zero partition before that. | |
1145 | * This is the data partition. | |
1146 | */ | |
1147 | for (i = 0; i < resv_index; i ++) { | |
1148 | if (data_start < efi_label->efi_parts[i].p_start) { | |
1149 | data_start = efi_label->efi_parts[i].p_start; | |
1150 | data_index = i; | |
1151 | } | |
1152 | } | |
1153 | data_size = efi_label->efi_parts[data_index].p_size; | |
1154 | ||
1155 | /* | |
1156 | * See the "efi_alloc_and_init" function for more information | |
1157 | * about where this "nblocks" value comes from. | |
1158 | */ | |
1159 | nblocks = efi_label->efi_first_u_lba - 1; | |
1160 | ||
1161 | /* | |
1162 | * Determine if the EFI label is out of sync. We check that: | |
1163 | * | |
1164 | * 1. the data partition ends at the limit we set, and | |
1165 | * 2. the reserved partition starts at the limit we set. | |
1166 | * | |
1167 | * If either of these conditions is not met, then we need to | |
1168 | * resync the EFI label. | |
1169 | * | |
1170 | * The limit is the last usable LBA, determined by the last LBA | |
1171 | * and the first usable LBA fields on the EFI label of the disk | |
1172 | * (see the lines directly above). Additionally, we factor in | |
1173 | * EFI_MIN_RESV_SIZE (per its use in "zpool_label_disk") and | |
1174 | * P2ALIGN it to ensure the partition boundaries are aligned | |
1175 | * (for performance reasons). The alignment should match the | |
1176 | * alignment used by the "zpool_label_disk" function. | |
1177 | */ | |
1178 | limit = P2ALIGN(efi_label->efi_last_lba - nblocks - EFI_MIN_RESV_SIZE, | |
1179 | PARTITION_END_ALIGNMENT); | |
1180 | if (data_start + data_size != limit || resv_start != limit) | |
1181 | sync_needed = B_TRUE; | |
1182 | ||
1183 | if (efi_debug && sync_needed) | |
1184 | (void) fprintf(stderr, "efi_use_whole_disk: sync needed\n"); | |
1185 | ||
5c363129 BB |
1186 | /* |
1187 | * If alter_lba is 1, we are using the backup label. | |
1188 | * Since we can locate the backup label by disk capacity, | |
1189 | * there must be no unallocated space. | |
1190 | */ | |
1191 | if ((efi_label->efi_altern_lba == 1) || (efi_label->efi_altern_lba | |
475ebd76 | 1192 | >= efi_label->efi_last_lba && !sync_needed)) { |
5c363129 BB |
1193 | if (efi_debug) { |
1194 | (void) fprintf(stderr, | |
1195 | "efi_use_whole_disk: requested space not found\n"); | |
1196 | } | |
1197 | efi_free(efi_label); | |
1198 | return (VT_ENOSPC); | |
1199 | } | |
1200 | ||
74d42600 SH |
1201 | /* |
1202 | * Verify that we've found the reserved partition by checking | |
1203 | * that it looks the way it did when we created it in zpool_label_disk. | |
1204 | * If we've found the incorrect partition, then we know that this | |
78595377 | 1205 | * device was reformatted and no longer is solely used by ZFS. |
74d42600 SH |
1206 | */ |
1207 | if ((efi_label->efi_parts[resv_index].p_size != EFI_MIN_RESV_SIZE) || | |
1208 | (efi_label->efi_parts[resv_index].p_tag != V_RESERVED) || | |
1209 | (resv_index != 8)) { | |
1210 | if (efi_debug) { | |
1211 | (void) fprintf(stderr, | |
1212 | "efi_use_whole_disk: wholedisk not available\n"); | |
1213 | } | |
1214 | efi_free(efi_label); | |
1215 | return (VT_ENOSPC); | |
1216 | } | |
1217 | ||
475ebd76 PS |
1218 | if (data_start + data_size != resv_start) { |
1219 | if (efi_debug) { | |
1220 | (void) fprintf(stderr, | |
1221 | "efi_use_whole_disk: " | |
1222 | "data_start (%lli) + " | |
1223 | "data_size (%lli) != " | |
1224 | "resv_start (%lli)\n", | |
1225 | data_start, data_size, resv_start); | |
1226 | } | |
1227 | ||
1228 | return (VT_EINVAL); | |
1229 | } | |
1230 | ||
1231 | if (limit < resv_start) { | |
1232 | if (efi_debug) { | |
1233 | (void) fprintf(stderr, | |
1234 | "efi_use_whole_disk: " | |
1235 | "limit (%lli) < resv_start (%lli)\n", | |
1236 | limit, resv_start); | |
cee43a74 | 1237 | } |
475ebd76 PS |
1238 | |
1239 | return (VT_EINVAL); | |
5c363129 BB |
1240 | } |
1241 | ||
475ebd76 PS |
1242 | difference = limit - resv_start; |
1243 | ||
1244 | if (efi_debug) | |
1245 | (void) fprintf(stderr, | |
1246 | "efi_use_whole_disk: difference is %lli\n", difference); | |
1247 | ||
5c363129 BB |
1248 | /* |
1249 | * Move the reserved partition. There is currently no data in | |
1250 | * here except fabricated devids (which get generated via | |
1251 | * efi_write()). So there is no need to copy data. | |
1252 | */ | |
cee43a74 ED |
1253 | efi_label->efi_parts[data_index].p_size += difference; |
1254 | efi_label->efi_parts[resv_index].p_start += difference; | |
475ebd76 | 1255 | efi_label->efi_last_u_lba = efi_label->efi_last_lba - nblocks; |
5c363129 | 1256 | |
8e82ffba GW |
1257 | /* |
1258 | * Rescanning the partition table in the kernel can result | |
1259 | * in the device links to be removed (see comment in vdev_disk_open). | |
1260 | * If BLKPG_RESIZE_PARTITION is available, then we can resize | |
1261 | * the partition table online and avoid having to remove the device | |
1262 | * links used by the pool. This provides a very deterministic | |
1263 | * approach to resizing devices and does not require any | |
1264 | * loops waiting for devices to reappear. | |
1265 | */ | |
1266 | #ifdef BLKPG_RESIZE_PARTITION | |
1267 | /* | |
1268 | * Delete the reserved partition since we're about to expand | |
1269 | * the data partition and it would overlap with the reserved | |
1270 | * partition. | |
1271 | * NOTE: The starting index for the ioctl is 1 while for the | |
1272 | * EFI partitions it's 0. For that reason we have to add one | |
1273 | * whenever we make an ioctl call. | |
1274 | */ | |
1275 | rval = call_blkpg_ioctl(fd, BLKPG_DEL_PARTITION, 0, 0, resv_index + 1); | |
1276 | if (rval != 0) | |
1277 | goto out; | |
1278 | ||
1279 | /* | |
1280 | * Expand the data partition | |
1281 | */ | |
1282 | rval = call_blkpg_ioctl(fd, BLKPG_RESIZE_PARTITION, | |
1283 | efi_label->efi_parts[data_index].p_start * efi_label->efi_lbasize, | |
1284 | efi_label->efi_parts[data_index].p_size * efi_label->efi_lbasize, | |
1285 | data_index + 1); | |
1286 | if (rval != 0) { | |
1287 | (void) fprintf(stderr, "Unable to resize data " | |
1288 | "partition: %d\n", rval); | |
1289 | /* | |
1290 | * Since we failed to resize, we need to reset the start | |
1291 | * of the reserve partition and re-create it. | |
1292 | */ | |
1293 | efi_label->efi_parts[resv_index].p_start -= difference; | |
1294 | } | |
1295 | ||
1296 | /* | |
1297 | * Re-add the reserved partition. If we've expanded the data partition | |
1298 | * then we'll move the reserve partition to the end of the data | |
1299 | * partition. Otherwise, we'll recreate the partition in its original | |
1300 | * location. Note that we do this as best-effort and ignore any | |
1301 | * errors that may arise here. This will ensure that we finish writing | |
1302 | * the EFI label. | |
1303 | */ | |
1304 | (void) call_blkpg_ioctl(fd, BLKPG_ADD_PARTITION, | |
1305 | efi_label->efi_parts[resv_index].p_start * efi_label->efi_lbasize, | |
1306 | efi_label->efi_parts[resv_index].p_size * efi_label->efi_lbasize, | |
1307 | resv_index + 1); | |
1308 | #endif | |
1309 | ||
1310 | /* | |
1311 | * We're now ready to write the EFI label. | |
1312 | */ | |
1313 | if (rval == 0) { | |
1314 | rval = efi_write(fd, efi_label); | |
1315 | if (rval < 0 && efi_debug) { | |
1316 | (void) fprintf(stderr, "efi_use_whole_disk:fail " | |
1317 | "to write label, rval=%d\n", rval); | |
5c363129 | 1318 | } |
5c363129 BB |
1319 | } |
1320 | ||
8e82ffba | 1321 | out: |
5c363129 | 1322 | efi_free(efi_label); |
8e82ffba | 1323 | return (rval); |
5c363129 BB |
1324 | } |
1325 | ||
5c363129 BB |
1326 | /* |
1327 | * write EFI label and backup label | |
1328 | */ | |
1329 | int | |
1330 | efi_write(int fd, struct dk_gpt *vtoc) | |
1331 | { | |
1332 | dk_efi_t dk_ioc; | |
1333 | efi_gpt_t *efi; | |
1334 | efi_gpe_t *efi_parts; | |
1335 | int i, j; | |
1336 | struct dk_cinfo dki_info; | |
d603ed6c | 1337 | int rval; |
5c363129 BB |
1338 | int md_flag = 0; |
1339 | int nblocks; | |
1340 | diskaddr_t lba_backup_gpt_hdr; | |
1341 | ||
d603ed6c | 1342 | if ((rval = efi_get_info(fd, &dki_info)) != 0) |
d1d7e268 | 1343 | return (rval); |
5c363129 | 1344 | |
78595377 | 1345 | /* check if we are dealing with a metadevice */ |
5c363129 BB |
1346 | if ((strncmp(dki_info.dki_cname, "pseudo", 7) == 0) && |
1347 | (strncmp(dki_info.dki_dname, "md", 3) == 0)) { | |
1348 | md_flag = 1; | |
1349 | } | |
1350 | ||
1351 | if (check_input(vtoc)) { | |
1352 | /* | |
1353 | * not valid; if it's a metadevice just pass it down | |
1354 | * because SVM will do its own checking | |
1355 | */ | |
1356 | if (md_flag == 0) { | |
1357 | return (VT_EINVAL); | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | dk_ioc.dki_lba = 1; | |
1362 | if (NBLOCKS(vtoc->efi_nparts, vtoc->efi_lbasize) < 34) { | |
1363 | dk_ioc.dki_length = EFI_MIN_ARRAY_SIZE + vtoc->efi_lbasize; | |
1364 | } else { | |
e09fdda9 | 1365 | dk_ioc.dki_length = (len_t)NBLOCKS(vtoc->efi_nparts, |
5c363129 BB |
1366 | vtoc->efi_lbasize) * |
1367 | vtoc->efi_lbasize; | |
1368 | } | |
1369 | ||
1370 | /* | |
1371 | * the number of blocks occupied by GUID partition entry array | |
1372 | */ | |
1373 | nblocks = dk_ioc.dki_length / vtoc->efi_lbasize - 1; | |
1374 | ||
1375 | /* | |
1376 | * Backup GPT header is located on the block after GUID | |
1377 | * partition entry array. Here, we calculate the address | |
1378 | * for backup GPT header. | |
1379 | */ | |
1380 | lba_backup_gpt_hdr = vtoc->efi_last_u_lba + 1 + nblocks; | |
d603ed6c | 1381 | if (posix_memalign((void **)&dk_ioc.dki_data, |
d1d7e268 | 1382 | vtoc->efi_lbasize, dk_ioc.dki_length)) |
5c363129 BB |
1383 | return (VT_ERROR); |
1384 | ||
d603ed6c | 1385 | memset(dk_ioc.dki_data, 0, dk_ioc.dki_length); |
5c363129 BB |
1386 | efi = dk_ioc.dki_data; |
1387 | ||
1388 | /* stuff user's input into EFI struct */ | |
1389 | efi->efi_gpt_Signature = LE_64(EFI_SIGNATURE); | |
1390 | efi->efi_gpt_Revision = LE_32(vtoc->efi_version); /* 0x02000100 */ | |
7a023273 | 1391 | efi->efi_gpt_HeaderSize = LE_32(sizeof (struct efi_gpt) - LEN_EFI_PAD); |
5c363129 BB |
1392 | efi->efi_gpt_Reserved1 = 0; |
1393 | efi->efi_gpt_MyLBA = LE_64(1ULL); | |
1394 | efi->efi_gpt_AlternateLBA = LE_64(lba_backup_gpt_hdr); | |
1395 | efi->efi_gpt_FirstUsableLBA = LE_64(vtoc->efi_first_u_lba); | |
1396 | efi->efi_gpt_LastUsableLBA = LE_64(vtoc->efi_last_u_lba); | |
1397 | efi->efi_gpt_PartitionEntryLBA = LE_64(2ULL); | |
1398 | efi->efi_gpt_NumberOfPartitionEntries = LE_32(vtoc->efi_nparts); | |
1399 | efi->efi_gpt_SizeOfPartitionEntry = LE_32(sizeof (struct efi_gpe)); | |
1400 | UUID_LE_CONVERT(efi->efi_gpt_DiskGUID, vtoc->efi_disk_uguid); | |
1401 | ||
1402 | /* LINTED -- always longlong aligned */ | |
1403 | efi_parts = (efi_gpe_t *)((char *)dk_ioc.dki_data + vtoc->efi_lbasize); | |
1404 | ||
1405 | for (i = 0; i < vtoc->efi_nparts; i++) { | |
1406 | for (j = 0; | |
1407 | j < sizeof (conversion_array) / | |
1408 | sizeof (struct uuid_to_ptag); j++) { | |
1409 | ||
1410 | if (vtoc->efi_parts[i].p_tag == j) { | |
1411 | UUID_LE_CONVERT( | |
1412 | efi_parts[i].efi_gpe_PartitionTypeGUID, | |
1413 | conversion_array[j].uuid); | |
1414 | break; | |
1415 | } | |
1416 | } | |
1417 | ||
1418 | if (j == sizeof (conversion_array) / | |
1419 | sizeof (struct uuid_to_ptag)) { | |
1420 | /* | |
1421 | * If we didn't have a matching uuid match, bail here. | |
1422 | * Don't write a label with unknown uuid. | |
1423 | */ | |
1424 | if (efi_debug) { | |
1425 | (void) fprintf(stderr, | |
1426 | "Unknown uuid for p_tag %d\n", | |
1427 | vtoc->efi_parts[i].p_tag); | |
1428 | } | |
1429 | return (VT_EINVAL); | |
1430 | } | |
1431 | ||
d603ed6c BB |
1432 | /* Zero's should be written for empty partitions */ |
1433 | if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) | |
1434 | continue; | |
1435 | ||
5c363129 BB |
1436 | efi_parts[i].efi_gpe_StartingLBA = |
1437 | LE_64(vtoc->efi_parts[i].p_start); | |
1438 | efi_parts[i].efi_gpe_EndingLBA = | |
1439 | LE_64(vtoc->efi_parts[i].p_start + | |
1440 | vtoc->efi_parts[i].p_size - 1); | |
1441 | efi_parts[i].efi_gpe_Attributes.PartitionAttrs = | |
1442 | LE_16(vtoc->efi_parts[i].p_flag); | |
1443 | for (j = 0; j < EFI_PART_NAME_LEN; j++) { | |
1444 | efi_parts[i].efi_gpe_PartitionName[j] = | |
1445 | LE_16((ushort_t)vtoc->efi_parts[i].p_name[j]); | |
1446 | } | |
1447 | if ((vtoc->efi_parts[i].p_tag != V_UNASSIGNED) && | |
1448 | uuid_is_null((uchar_t *)&vtoc->efi_parts[i].p_uguid)) { | |
1449 | (void) uuid_generate((uchar_t *) | |
1450 | &vtoc->efi_parts[i].p_uguid); | |
1451 | } | |
861166b0 AZ |
1452 | memcpy(&efi_parts[i].efi_gpe_UniquePartitionGUID, |
1453 | &vtoc->efi_parts[i].p_uguid, | |
5c363129 BB |
1454 | sizeof (uuid_t)); |
1455 | } | |
1456 | efi->efi_gpt_PartitionEntryArrayCRC32 = | |
1457 | LE_32(efi_crc32((unsigned char *)efi_parts, | |
1458 | vtoc->efi_nparts * (int)sizeof (struct efi_gpe))); | |
1459 | efi->efi_gpt_HeaderCRC32 = | |
7a023273 ZB |
1460 | LE_32(efi_crc32((unsigned char *)efi, |
1461 | LE_32(efi->efi_gpt_HeaderSize))); | |
5c363129 BB |
1462 | |
1463 | if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { | |
1464 | free(dk_ioc.dki_data); | |
1465 | switch (errno) { | |
1466 | case EIO: | |
1467 | return (VT_EIO); | |
1468 | case EINVAL: | |
1469 | return (VT_EINVAL); | |
1470 | default: | |
1471 | return (VT_ERROR); | |
1472 | } | |
1473 | } | |
1474 | /* if it's a metadevice we're done */ | |
1475 | if (md_flag) { | |
1476 | free(dk_ioc.dki_data); | |
1477 | return (0); | |
1478 | } | |
1479 | ||
1480 | /* write backup partition array */ | |
1481 | dk_ioc.dki_lba = vtoc->efi_last_u_lba + 1; | |
1482 | dk_ioc.dki_length -= vtoc->efi_lbasize; | |
1483 | /* LINTED */ | |
1484 | dk_ioc.dki_data = (efi_gpt_t *)((char *)dk_ioc.dki_data + | |
1485 | vtoc->efi_lbasize); | |
1486 | ||
1487 | if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { | |
1488 | /* | |
1489 | * we wrote the primary label okay, so don't fail | |
1490 | */ | |
1491 | if (efi_debug) { | |
1492 | (void) fprintf(stderr, | |
1493 | "write of backup partitions to block %llu " | |
1494 | "failed, errno %d\n", | |
1495 | vtoc->efi_last_u_lba + 1, | |
1496 | errno); | |
1497 | } | |
1498 | } | |
1499 | /* | |
1500 | * now swap MyLBA and AlternateLBA fields and write backup | |
1501 | * partition table header | |
1502 | */ | |
1503 | dk_ioc.dki_lba = lba_backup_gpt_hdr; | |
1504 | dk_ioc.dki_length = vtoc->efi_lbasize; | |
1505 | /* LINTED */ | |
1506 | dk_ioc.dki_data = (efi_gpt_t *)((char *)dk_ioc.dki_data - | |
1507 | vtoc->efi_lbasize); | |
1508 | efi->efi_gpt_AlternateLBA = LE_64(1ULL); | |
1509 | efi->efi_gpt_MyLBA = LE_64(lba_backup_gpt_hdr); | |
1510 | efi->efi_gpt_PartitionEntryLBA = LE_64(vtoc->efi_last_u_lba + 1); | |
1511 | efi->efi_gpt_HeaderCRC32 = 0; | |
1512 | efi->efi_gpt_HeaderCRC32 = | |
1513 | LE_32(efi_crc32((unsigned char *)dk_ioc.dki_data, | |
7a023273 | 1514 | LE_32(efi->efi_gpt_HeaderSize))); |
5c363129 BB |
1515 | |
1516 | if (efi_ioctl(fd, DKIOCSETEFI, &dk_ioc) == -1) { | |
1517 | if (efi_debug) { | |
1518 | (void) fprintf(stderr, | |
1519 | "write of backup header to block %llu failed, " | |
1520 | "errno %d\n", | |
1521 | lba_backup_gpt_hdr, | |
1522 | errno); | |
1523 | } | |
1524 | } | |
1525 | /* write the PMBR */ | |
1526 | (void) write_pmbr(fd, vtoc); | |
1527 | free(dk_ioc.dki_data); | |
d603ed6c | 1528 | |
5c363129 BB |
1529 | return (0); |
1530 | } | |
1531 | ||
1532 | void | |
1533 | efi_free(struct dk_gpt *ptr) | |
1534 | { | |
1535 | free(ptr); | |
1536 | } | |
1537 | ||
5c363129 BB |
1538 | void |
1539 | efi_err_check(struct dk_gpt *vtoc) | |
1540 | { | |
1541 | int resv_part = -1; | |
1542 | int i, j; | |
1543 | diskaddr_t istart, jstart, isize, jsize, endsect; | |
1544 | int overlap = 0; | |
1545 | ||
1546 | /* | |
1547 | * make sure no partitions overlap | |
1548 | */ | |
1549 | for (i = 0; i < vtoc->efi_nparts; i++) { | |
1550 | /* It can't be unassigned and have an actual size */ | |
1551 | if ((vtoc->efi_parts[i].p_tag == V_UNASSIGNED) && | |
1552 | (vtoc->efi_parts[i].p_size != 0)) { | |
1553 | (void) fprintf(stderr, | |
1554 | "partition %d is \"unassigned\" but has a size " | |
1555 | "of %llu\n", i, vtoc->efi_parts[i].p_size); | |
1556 | } | |
1557 | if (vtoc->efi_parts[i].p_tag == V_UNASSIGNED) { | |
1558 | continue; | |
1559 | } | |
1560 | if (vtoc->efi_parts[i].p_tag == V_RESERVED) { | |
1561 | if (resv_part != -1) { | |
1562 | (void) fprintf(stderr, | |
1563 | "found duplicate reserved partition at " | |
1564 | "%d\n", i); | |
1565 | } | |
1566 | resv_part = i; | |
1567 | if (vtoc->efi_parts[i].p_size != EFI_MIN_RESV_SIZE) | |
1568 | (void) fprintf(stderr, | |
1569 | "Warning: reserved partition size must " | |
1570 | "be %d sectors\n", EFI_MIN_RESV_SIZE); | |
1571 | } | |
1572 | if ((vtoc->efi_parts[i].p_start < vtoc->efi_first_u_lba) || | |
1573 | (vtoc->efi_parts[i].p_start > vtoc->efi_last_u_lba)) { | |
1574 | (void) fprintf(stderr, | |
1575 | "Partition %d starts at %llu\n", | |
1576 | i, | |
1577 | vtoc->efi_parts[i].p_start); | |
1578 | (void) fprintf(stderr, | |
1579 | "It must be between %llu and %llu.\n", | |
1580 | vtoc->efi_first_u_lba, | |
1581 | vtoc->efi_last_u_lba); | |
1582 | } | |
1583 | if ((vtoc->efi_parts[i].p_start + | |
1584 | vtoc->efi_parts[i].p_size < | |
1585 | vtoc->efi_first_u_lba) || | |
1586 | (vtoc->efi_parts[i].p_start + | |
1587 | vtoc->efi_parts[i].p_size > | |
1588 | vtoc->efi_last_u_lba + 1)) { | |
1589 | (void) fprintf(stderr, | |
1590 | "Partition %d ends at %llu\n", | |
1591 | i, | |
1592 | vtoc->efi_parts[i].p_start + | |
1593 | vtoc->efi_parts[i].p_size); | |
1594 | (void) fprintf(stderr, | |
1595 | "It must be between %llu and %llu.\n", | |
1596 | vtoc->efi_first_u_lba, | |
1597 | vtoc->efi_last_u_lba); | |
1598 | } | |
1599 | ||
1600 | for (j = 0; j < vtoc->efi_nparts; j++) { | |
1601 | isize = vtoc->efi_parts[i].p_size; | |
1602 | jsize = vtoc->efi_parts[j].p_size; | |
1603 | istart = vtoc->efi_parts[i].p_start; | |
1604 | jstart = vtoc->efi_parts[j].p_start; | |
1605 | if ((i != j) && (isize != 0) && (jsize != 0)) { | |
1606 | endsect = jstart + jsize -1; | |
1607 | if ((jstart <= istart) && | |
1608 | (istart <= endsect)) { | |
1609 | if (!overlap) { | |
1610 | (void) fprintf(stderr, | |
1611 | "label error: EFI Labels do not " | |
1612 | "support overlapping partitions\n"); | |
1613 | } | |
1614 | (void) fprintf(stderr, | |
1615 | "Partition %d overlaps partition " | |
1616 | "%d.\n", i, j); | |
1617 | overlap = 1; | |
1618 | } | |
1619 | } | |
1620 | } | |
1621 | } | |
1622 | /* make sure there is a reserved partition */ | |
1623 | if (resv_part == -1) { | |
1624 | (void) fprintf(stderr, | |
1625 | "no reserved partition found\n"); | |
1626 | } | |
1627 | } |