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f0fa1795 MT |
1 | /*############################################################################# |
2 | # # | |
3 | # IPFire - An Open Source Firewall Distribution # | |
4 | # Copyright (C) 2014 IPFire development team # | |
5 | # # | |
6 | # This program is free software: you can redistribute it and/or modify # | |
7 | # it under the terms of the GNU General Public License as published by # | |
8 | # the Free Software Foundation, either version 3 of the License, or # | |
9 | # (at your option) any later version. # | |
10 | # # | |
11 | # This program is distributed in the hope that it will be useful, # | |
12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
14 | # GNU General Public License for more details. # | |
15 | # # | |
16 | # You should have received a copy of the GNU General Public License # | |
17 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
18 | # # | |
19 | #############################################################################*/ | |
20 | ||
25fcce25 MT |
21 | #ifndef _GNU_SOURCE |
22 | #define _GNU_SOURCE | |
23 | #endif | |
24 | ||
f0fa1795 | 25 | #include <assert.h> |
d7dd283b MT |
26 | #include <blkid/blkid.h> |
27 | #include <fcntl.h> | |
f0fa1795 | 28 | #include <libudev.h> |
d7dd283b | 29 | #include <math.h> |
f0fa1795 MT |
30 | #include <stdio.h> |
31 | #include <stdlib.h> | |
32 | #include <string.h> | |
d7dd283b | 33 | #include <sys/ioctl.h> |
f0fa1795 | 34 | #include <sys/mount.h> |
25fcce25 | 35 | #include <sys/swap.h> |
5be66d81 | 36 | #include <sys/sysinfo.h> |
f0fa1795 MT |
37 | #include <unistd.h> |
38 | ||
d7dd283b MT |
39 | #include <linux/fs.h> |
40 | ||
5315fae6 MT |
41 | #include <libsmooth.h> |
42 | ||
f0fa1795 | 43 | #include "hw.h" |
25fcce25 MT |
44 | |
45 | const char* other_filesystems[] = { | |
46 | "/dev", | |
47 | "/proc", | |
48 | "/sys", | |
49 | NULL | |
50 | }; | |
f0fa1795 | 51 | |
46b56e20 | 52 | static int system_chroot(const char* output, const char* path, const char* cmd) { |
f5007e9c MT |
53 | char chroot_cmd[STRING_SIZE]; |
54 | ||
55 | snprintf(chroot_cmd, sizeof(chroot_cmd), "/usr/sbin/chroot %s %s", path, cmd); | |
56 | ||
46b56e20 | 57 | return mysystem(output, chroot_cmd); |
f5007e9c MT |
58 | } |
59 | ||
f0fa1795 MT |
60 | struct hw* hw_init() { |
61 | struct hw* hw = malloc(sizeof(*hw)); | |
62 | assert(hw); | |
63 | ||
64 | // Initialize libudev | |
65 | hw->udev = udev_new(); | |
66 | if (!hw->udev) { | |
67 | fprintf(stderr, "Could not create udev instance\n"); | |
68 | exit(1); | |
69 | } | |
70 | ||
71 | return hw; | |
72 | } | |
73 | ||
74 | void hw_free(struct hw* hw) { | |
75 | if (hw->udev) | |
76 | udev_unref(hw->udev); | |
77 | ||
78 | free(hw); | |
79 | } | |
80 | ||
81 | static int strstartswith(const char* a, const char* b) { | |
82 | return (strncmp(a, b, strlen(b)) == 0); | |
83 | } | |
84 | ||
25fcce25 | 85 | int hw_mount(const char* source, const char* target, const char* fs, int flags) { |
85f2892b MT |
86 | // Create target if it does not exist |
87 | if (access(target, X_OK) != 0) | |
88 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
89 | ||
25fcce25 | 90 | return mount(source, target, fs, flags, NULL); |
f0fa1795 MT |
91 | } |
92 | ||
93 | int hw_umount(const char* target) { | |
a8d8b557 | 94 | return umount2(target, 0); |
f0fa1795 MT |
95 | } |
96 | ||
97 | static int hw_test_source_medium(const char* path) { | |
25fcce25 | 98 | int ret = hw_mount(path, SOURCE_MOUNT_PATH, "iso9660", MS_RDONLY); |
f0fa1795 MT |
99 | |
100 | // If the source could not be mounted we | |
101 | // cannot proceed. | |
5315fae6 | 102 | if (ret != 0) |
f0fa1795 MT |
103 | return ret; |
104 | ||
105 | // Check if the test file exists. | |
5315fae6 | 106 | ret = access(SOURCE_TEST_FILE, R_OK); |
f0fa1795 MT |
107 | |
108 | // Umount the test device. | |
109 | hw_umount(SOURCE_MOUNT_PATH); | |
110 | ||
5315fae6 | 111 | return (ret == 0); |
f0fa1795 MT |
112 | } |
113 | ||
114 | char* hw_find_source_medium(struct hw* hw) { | |
115 | char* ret = NULL; | |
116 | ||
117 | struct udev_enumerate* enumerate = udev_enumerate_new(hw->udev); | |
118 | ||
119 | udev_enumerate_add_match_subsystem(enumerate, "block"); | |
120 | udev_enumerate_scan_devices(enumerate); | |
121 | ||
122 | struct udev_list_entry* devices = udev_enumerate_get_list_entry(enumerate); | |
123 | ||
124 | struct udev_list_entry* dev_list_entry; | |
125 | udev_list_entry_foreach(dev_list_entry, devices) { | |
126 | const char* path = udev_list_entry_get_name(dev_list_entry); | |
127 | struct udev_device* dev = udev_device_new_from_syspath(hw->udev, path); | |
128 | ||
129 | const char* dev_path = udev_device_get_devnode(dev); | |
130 | ||
131 | // Skip everything what we cannot work with | |
132 | if (strstartswith(dev_path, "/dev/loop") || strstartswith(dev_path, "/dev/fd") || | |
4a0d9bef | 133 | strstartswith(dev_path, "/dev/ram") || strstartswith(dev_path, "/dev/md")) |
f0fa1795 MT |
134 | continue; |
135 | ||
5315fae6 | 136 | if (hw_test_source_medium(dev_path) == 0) { |
f0fa1795 MT |
137 | ret = strdup(dev_path); |
138 | } | |
139 | ||
140 | udev_device_unref(dev); | |
141 | ||
142 | // If a suitable device was found the search will end. | |
143 | if (ret) | |
144 | break; | |
145 | } | |
146 | ||
147 | udev_enumerate_unref(enumerate); | |
148 | ||
149 | return ret; | |
150 | } | |
d7dd283b MT |
151 | |
152 | static struct hw_disk** hw_create_disks() { | |
153 | struct hw_disk** ret = malloc(sizeof(*ret) * (HW_MAX_DISKS + 1)); | |
154 | ||
155 | return ret; | |
156 | } | |
157 | ||
158 | static unsigned long long hw_block_device_get_size(const char* dev) { | |
159 | int fd = open(dev, O_RDONLY); | |
160 | if (fd < 0) | |
161 | return 0; | |
162 | ||
163 | unsigned long long size = blkid_get_dev_size(fd); | |
164 | close(fd); | |
165 | ||
166 | return size; | |
167 | } | |
168 | ||
ee00d203 | 169 | struct hw_disk** hw_find_disks(struct hw* hw, const char* sourcedrive) { |
d7dd283b MT |
170 | struct hw_disk** ret = hw_create_disks(); |
171 | struct hw_disk** disks = ret; | |
172 | ||
173 | struct udev_enumerate* enumerate = udev_enumerate_new(hw->udev); | |
174 | ||
175 | udev_enumerate_add_match_subsystem(enumerate, "block"); | |
176 | udev_enumerate_scan_devices(enumerate); | |
177 | ||
178 | struct udev_list_entry* devices = udev_enumerate_get_list_entry(enumerate); | |
179 | ||
180 | struct udev_list_entry* dev_list_entry; | |
181 | unsigned int i = HW_MAX_DISKS; | |
182 | udev_list_entry_foreach(dev_list_entry, devices) { | |
183 | const char* path = udev_list_entry_get_name(dev_list_entry); | |
184 | struct udev_device* dev = udev_device_new_from_syspath(hw->udev, path); | |
185 | ||
186 | const char* dev_path = udev_device_get_devnode(dev); | |
187 | ||
188 | // Skip everything what we cannot work with | |
189 | if (strstartswith(dev_path, "/dev/loop") || strstartswith(dev_path, "/dev/fd") || | |
4a0d9bef MT |
190 | strstartswith(dev_path, "/dev/ram") || strstartswith(dev_path, "/dev/sr") || |
191 | strstartswith(dev_path, "/dev/md")) { | |
d7dd283b MT |
192 | udev_device_unref(dev); |
193 | continue; | |
194 | } | |
195 | ||
ee00d203 MT |
196 | // Skip sourcedrive if we need to |
197 | if (sourcedrive && (strcmp(dev_path, sourcedrive) == 0)) { | |
d7dd283b MT |
198 | udev_device_unref(dev); |
199 | continue; | |
200 | } | |
201 | ||
ee00d203 MT |
202 | // DEVTYPE must be disk (otherwise we will see all sorts of partitions here) |
203 | const char* devtype = udev_device_get_property_value(dev, "DEVTYPE"); | |
204 | if (devtype && (strcmp(devtype, "disk") != 0)) { | |
d7dd283b MT |
205 | udev_device_unref(dev); |
206 | continue; | |
207 | } | |
208 | ||
209 | // Skip devices with a size of zero | |
210 | unsigned long long size = hw_block_device_get_size(dev_path); | |
211 | if (size == 0) { | |
212 | udev_device_unref(dev); | |
213 | continue; | |
214 | } | |
215 | ||
216 | struct hw_disk* disk = malloc(sizeof(*disk)); | |
217 | if (disk == NULL) | |
218 | return NULL; | |
219 | ||
220 | disk->ref = 1; | |
221 | ||
222 | strncpy(disk->path, dev_path, sizeof(disk->path)); | |
0c8b2d99 | 223 | const char* p = disk->path + 5; |
d7dd283b MT |
224 | |
225 | disk->size = size; | |
226 | ||
227 | // Vendor | |
228 | const char* vendor = udev_device_get_property_value(dev, "ID_VENDOR"); | |
229 | if (!vendor) | |
230 | vendor = udev_device_get_sysattr_value(dev, "vendor"); | |
231 | if (!vendor) | |
232 | vendor = udev_device_get_sysattr_value(dev, "manufacturer"); | |
d7dd283b | 233 | |
4c812463 MT |
234 | if (vendor) |
235 | strncpy(disk->vendor, vendor, sizeof(disk->vendor)); | |
236 | else | |
237 | *disk->vendor = '\0'; | |
d7dd283b MT |
238 | |
239 | // Model | |
240 | const char* model = udev_device_get_property_value(dev, "ID_MODEL"); | |
241 | if (!model) | |
242 | model = udev_device_get_sysattr_value(dev, "model"); | |
243 | if (!model) | |
244 | model = udev_device_get_sysattr_value(dev, "product"); | |
d7dd283b | 245 | |
4c812463 MT |
246 | if (model) |
247 | strncpy(disk->model, model, sizeof(disk->model)); | |
248 | else | |
249 | *disk->model = '\0'; | |
250 | ||
251 | // Format description | |
252 | char size_str[STRING_SIZE]; | |
253 | snprintf(size_str, sizeof(size_str), "%4.1fGB", (double)disk->size / pow(1024, 3)); | |
d7dd283b | 254 | |
4c812463 MT |
255 | if (*disk->vendor && *disk->model) { |
256 | snprintf(disk->description, sizeof(disk->description), | |
0c8b2d99 | 257 | "%s - %s - %s - %s", size_str, p, disk->vendor, disk->model); |
4c812463 MT |
258 | |
259 | } else if (*disk->vendor || *disk->model) { | |
260 | snprintf(disk->description, sizeof(disk->description), | |
0c8b2d99 | 261 | "%s - %s - %s", size_str, p, (*disk->vendor) ? disk->vendor : disk->model); |
4c812463 MT |
262 | |
263 | } else { | |
264 | snprintf(disk->description, sizeof(disk->description), | |
0c8b2d99 | 265 | "%s - %s", size_str, p); |
4c812463 | 266 | } |
d7dd283b MT |
267 | |
268 | *disks++ = disk; | |
269 | ||
270 | if (--i == 0) | |
271 | break; | |
272 | ||
273 | udev_device_unref(dev); | |
274 | } | |
275 | ||
276 | udev_enumerate_unref(enumerate); | |
277 | ||
278 | *disks = NULL; | |
279 | ||
280 | return ret; | |
281 | } | |
282 | ||
283 | void hw_free_disks(struct hw_disk** disks) { | |
284 | struct hw_disk** disk = disks; | |
285 | ||
286 | while (*disk != NULL) { | |
287 | if (--(*disk)->ref == 0) | |
288 | free(*disk); | |
289 | ||
290 | disk++; | |
291 | } | |
292 | ||
293 | free(disks); | |
294 | } | |
295 | ||
296 | unsigned int hw_count_disks(struct hw_disk** disks) { | |
297 | unsigned int ret = 0; | |
298 | ||
299 | while (*disks++) | |
300 | ret++; | |
301 | ||
302 | return ret; | |
303 | } | |
304 | ||
305 | struct hw_disk** hw_select_disks(struct hw_disk** disks, int* selection) { | |
306 | struct hw_disk** ret = hw_create_disks(); | |
307 | struct hw_disk** selected_disks = ret; | |
308 | ||
309 | unsigned int num_disks = hw_count_disks(disks); | |
310 | ||
311 | for (unsigned int i = 0; i < num_disks; i++) { | |
ee43f517 | 312 | if (!selection || selection[i]) { |
d7dd283b MT |
313 | struct hw_disk *selected_disk = disks[i]; |
314 | selected_disk->ref++; | |
315 | ||
316 | *selected_disks++ = selected_disk; | |
317 | } | |
318 | } | |
319 | ||
320 | // Set sentinel | |
321 | *selected_disks = NULL; | |
322 | ||
323 | return ret; | |
324 | } | |
325 | ||
a3e135c8 MT |
326 | struct hw_disk** hw_select_first_disk(const struct hw_disk** disks) { |
327 | struct hw_disk** ret = hw_create_disks(); | |
328 | struct hw_disk** selected_disks = ret; | |
329 | ||
330 | unsigned int num_disks = hw_count_disks(disks); | |
331 | assert(num_disks > 0); | |
332 | ||
333 | for (unsigned int i = 0; i < num_disks; i++) { | |
334 | struct hw_disk *disk = disks[i]; | |
335 | disk->ref++; | |
336 | ||
337 | *selected_disks++ = disk; | |
338 | break; | |
339 | } | |
340 | ||
341 | // Set sentinel | |
342 | *selected_disks = NULL; | |
343 | ||
344 | return ret; | |
345 | } | |
346 | ||
25fcce25 MT |
347 | static unsigned long long hw_swap_size(struct hw_destination* dest) { |
348 | unsigned long long memory = hw_memory(); | |
349 | ||
350 | unsigned long long swap_size = memory / 4; | |
351 | ||
352 | // Min. swap size is 128MB | |
353 | if (swap_size < MB2BYTES(128)) | |
354 | swap_size = MB2BYTES(128); | |
355 | ||
356 | // Cap swap size to 1GB | |
357 | else if (swap_size > MB2BYTES(1024)) | |
358 | swap_size = MB2BYTES(1024); | |
359 | ||
360 | return swap_size; | |
361 | } | |
362 | ||
363 | static unsigned long long hw_root_size(struct hw_destination* dest) { | |
364 | unsigned long long root_size; | |
365 | ||
366 | if (dest->size < MB2BYTES(2048)) | |
367 | root_size = MB2BYTES(1024); | |
368 | ||
369 | else if (dest->size >= MB2BYTES(2048) && dest->size <= MB2BYTES(3072)) | |
370 | root_size = MB2BYTES(1536); | |
371 | ||
372 | else | |
373 | root_size = MB2BYTES(2048); | |
374 | ||
375 | return root_size; | |
376 | } | |
377 | ||
378 | static unsigned long long hw_boot_size(struct hw_destination* dest) { | |
379 | return MB2BYTES(64); | |
380 | } | |
381 | ||
a691d4b3 MT |
382 | static int hw_device_has_p_suffix(const struct hw_destination* dest) { |
383 | // All RAID devices have the p suffix. | |
384 | if (dest->is_raid) | |
385 | return 1; | |
386 | ||
387 | // Devices with a number at the end have the p suffix, too. | |
388 | // e.g. mmcblk0, cciss0 | |
126d3570 | 389 | unsigned int last_char = strlen(dest->path) - 1; |
a691d4b3 MT |
390 | if ((dest->path[last_char] >= '0') && (dest->path[last_char] <= '9')) |
391 | return 1; | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
25fcce25 | 396 | static int hw_calculate_partition_table(struct hw_destination* dest) { |
48d6a112 MT |
397 | char path[DEV_SIZE]; |
398 | int part_idx = 1; | |
399 | ||
a691d4b3 MT |
400 | snprintf(path, sizeof(path), "%s%s", dest->path, |
401 | hw_device_has_p_suffix(dest) ? "p" : ""); | |
48d6a112 MT |
402 | dest->part_boot_idx = 0; |
403 | ||
25fcce25 MT |
404 | // Determine the size of the target block device |
405 | if (dest->is_raid) { | |
406 | dest->size = (dest->disk1->size >= dest->disk2->size) ? | |
5315fae6 | 407 | dest->disk2->size : dest->disk1->size; |
22581f51 MT |
408 | |
409 | // The RAID will install some metadata at the end of the disk | |
410 | // and we will save up some space for that. | |
411 | dest->size -= MB2BYTES(2); | |
25fcce25 MT |
412 | } else { |
413 | dest->size = dest->disk1->size; | |
414 | } | |
415 | ||
802a123b MT |
416 | // As we add some extra space before the beginning of the first |
417 | // partition, we need to substract that here. | |
418 | dest->size -= MB2BYTES(1); | |
419 | ||
420 | // Add some more space for partition tables, etc. | |
421 | dest->size -= MB2BYTES(1); | |
422 | ||
48d6a112 MT |
423 | // Determine partition table |
424 | dest->part_table = HW_PART_TABLE_MSDOS; | |
425 | ||
426 | // Disks over 2TB need to use GPT | |
427 | if (dest->size >= MB2BYTES(2047 * 1024)) | |
428 | dest->part_table = HW_PART_TABLE_GPT; | |
429 | ||
430 | // We also use GPT on raid disks by default | |
431 | else if (dest->is_raid) | |
432 | dest->part_table = HW_PART_TABLE_GPT; | |
433 | ||
434 | // When using GPT, GRUB2 needs a little bit of space to put | |
435 | // itself in. | |
5689fc72 | 436 | if (dest->part_table == HW_PART_TABLE_GPT) { |
48d6a112 MT |
437 | snprintf(dest->part_bootldr, sizeof(dest->part_bootldr), |
438 | "%s%d", path, part_idx); | |
439 | ||
440 | dest->size_bootldr = MB2BYTES(4); | |
441 | ||
442 | dest->part_boot_idx = part_idx++; | |
443 | } else { | |
444 | *dest->part_bootldr = '\0'; | |
445 | dest->size_bootldr = 0; | |
446 | } | |
447 | ||
25fcce25 MT |
448 | dest->size_boot = hw_boot_size(dest); |
449 | dest->size_swap = hw_swap_size(dest); | |
450 | dest->size_root = hw_root_size(dest); | |
451 | ||
452 | // Determine the size of the data partition. | |
48d6a112 MT |
453 | unsigned long long used_space = dest->size_bootldr + dest->size_boot |
454 | + dest->size_swap + dest->size_root; | |
25fcce25 MT |
455 | |
456 | // Disk is way too small | |
457 | if (used_space >= dest->size) | |
458 | return -1; | |
459 | ||
460 | dest->size_data = dest->size - used_space; | |
461 | ||
462 | // If it gets too small, we remove the swap space. | |
463 | if (dest->size_data <= MB2BYTES(256)) { | |
464 | dest->size_data += dest->size_swap; | |
465 | dest->size_swap = 0; | |
466 | } | |
467 | ||
468 | // Set partition names | |
25fcce25 | 469 | if (dest->size_boot > 0) { |
48d6a112 MT |
470 | if (dest->part_boot_idx == 0) |
471 | dest->part_boot_idx = part_idx; | |
25fcce25 MT |
472 | |
473 | snprintf(dest->part_boot, sizeof(dest->part_boot), "%s%d", path, part_idx++); | |
474 | } else | |
475 | *dest->part_boot = '\0'; | |
476 | ||
477 | if (dest->size_swap > 0) | |
478 | snprintf(dest->part_swap, sizeof(dest->part_swap), "%s%d", path, part_idx++); | |
479 | else | |
480 | *dest->part_swap = '\0'; | |
481 | ||
482 | // There is always a root partition | |
48d6a112 | 483 | if (dest->part_boot_idx == 0) |
25fcce25 MT |
484 | dest->part_boot_idx = part_idx; |
485 | ||
486 | snprintf(dest->part_root, sizeof(dest->part_root), "%s%d", path, part_idx++); | |
487 | ||
488 | if (dest->size_data > 0) | |
489 | snprintf(dest->part_data, sizeof(dest->part_data), "%s%d", path, part_idx++); | |
490 | else | |
491 | *dest->part_data = '\0'; | |
492 | ||
25fcce25 MT |
493 | return 0; |
494 | } | |
495 | ||
d7dd283b MT |
496 | struct hw_destination* hw_make_destination(int part_type, struct hw_disk** disks) { |
497 | struct hw_destination* dest = malloc(sizeof(*dest)); | |
498 | ||
499 | if (part_type == HW_PART_TYPE_NORMAL) { | |
500 | dest->disk1 = *disks; | |
501 | dest->disk2 = NULL; | |
502 | ||
503 | strncpy(dest->path, dest->disk1->path, sizeof(dest->path)); | |
504 | ||
505 | } else if (part_type == HW_PART_TYPE_RAID1) { | |
506 | dest->disk1 = *disks++; | |
507 | dest->disk2 = *disks; | |
4a0d9bef | 508 | dest->raid_level = 1; |
d7dd283b MT |
509 | |
510 | snprintf(dest->path, sizeof(dest->path), "/dev/md0"); | |
511 | } | |
512 | ||
513 | // Is this a RAID device? | |
514 | dest->is_raid = (part_type > HW_PART_TYPE_NORMAL); | |
515 | ||
25fcce25 MT |
516 | int r = hw_calculate_partition_table(dest); |
517 | if (r) | |
518 | return NULL; | |
d7dd283b | 519 | |
25fcce25 MT |
520 | // Set default filesystem |
521 | dest->filesystem = HW_FS_DEFAULT; | |
d7dd283b MT |
522 | |
523 | return dest; | |
524 | } | |
c4e96674 MT |
525 | |
526 | unsigned long long hw_memory() { | |
5be66d81 | 527 | struct sysinfo si; |
c4e96674 | 528 | |
5be66d81 MT |
529 | int r = sysinfo(&si); |
530 | if (r < 0) | |
531 | return 0; | |
c4e96674 | 532 | |
5be66d81 | 533 | return si.totalram; |
c4e96674 | 534 | } |
25fcce25 | 535 | |
d2f993a7 MT |
536 | static int hw_zero_out_device(const char* path, int bytes) { |
537 | char block[512]; | |
538 | memset(block, 0, sizeof(block)); | |
539 | ||
540 | int blocks = bytes / sizeof(block); | |
541 | ||
542 | int fd = open(path, O_WRONLY); | |
543 | if (fd < 0) | |
544 | return -1; | |
545 | ||
546 | unsigned int bytes_written = 0; | |
547 | while (blocks-- > 0) { | |
548 | bytes_written += write(fd, block, sizeof(block)); | |
549 | } | |
550 | ||
551 | fsync(fd); | |
552 | close(fd); | |
553 | ||
554 | return bytes_written; | |
555 | } | |
556 | ||
0e491487 MT |
557 | static int try_open(const char* path) { |
558 | FILE* f = fopen(path, "r"); | |
559 | if (f) { | |
560 | fclose(f); | |
561 | return 0; | |
562 | } | |
563 | ||
564 | return -1; | |
565 | } | |
566 | ||
46b56e20 | 567 | int hw_create_partitions(struct hw_destination* dest, const char* output) { |
d2f993a7 MT |
568 | // Before we write a new partition table to the disk, we will erase |
569 | // the first couple of megabytes at the beginning of the device to | |
570 | // get rid of all left other things like bootloaders and partition tables. | |
571 | // This solves some problems when changing from MBR to GPT partitions or | |
572 | // the other way around. | |
573 | int r = hw_zero_out_device(dest->path, MB2BYTES(10)); | |
574 | if (r <= 0) | |
575 | return r; | |
25fcce25 | 576 | |
d2f993a7 | 577 | char* cmd = NULL; |
25fcce25 MT |
578 | asprintf(&cmd, "/usr/sbin/parted -s %s -a optimal", dest->path); |
579 | ||
580 | // Set partition type | |
581 | if (dest->part_table == HW_PART_TABLE_MSDOS) | |
582 | asprintf(&cmd, "%s mklabel msdos", cmd); | |
583 | else if (dest->part_table == HW_PART_TABLE_GPT) | |
584 | asprintf(&cmd, "%s mklabel gpt", cmd); | |
585 | ||
802a123b | 586 | unsigned long long part_start = MB2BYTES(1); |
25fcce25 | 587 | |
48d6a112 | 588 | if (*dest->part_bootldr) { |
802a123b | 589 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
48d6a112 | 590 | (dest->part_table == HW_PART_TABLE_GPT) ? "BOOTLDR" : "primary", |
802a123b | 591 | part_start, part_start + dest->size_bootldr - 1); |
48d6a112 MT |
592 | |
593 | part_start += dest->size_bootldr; | |
594 | } | |
595 | ||
25fcce25 | 596 | if (*dest->part_boot) { |
802a123b | 597 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
25fcce25 | 598 | (dest->part_table == HW_PART_TABLE_GPT) ? "BOOT" : "primary", |
802a123b | 599 | part_start, part_start + dest->size_boot - 1); |
25fcce25 MT |
600 | |
601 | part_start += dest->size_boot; | |
602 | } | |
603 | ||
604 | if (*dest->part_swap) { | |
802a123b | 605 | asprintf(&cmd, "%s mkpart %s linux-swap %lluB %lluB", cmd, |
25fcce25 | 606 | (dest->part_table == HW_PART_TABLE_GPT) ? "SWAP" : "primary", |
802a123b | 607 | part_start, part_start + dest->size_swap - 1); |
25fcce25 MT |
608 | |
609 | part_start += dest->size_swap; | |
610 | } | |
611 | ||
612 | if (*dest->part_root) { | |
802a123b | 613 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
25fcce25 | 614 | (dest->part_table == HW_PART_TABLE_GPT) ? "ROOT" : "primary", |
802a123b | 615 | part_start, part_start + dest->size_root - 1); |
25fcce25 MT |
616 | |
617 | part_start += dest->size_root; | |
618 | } | |
619 | ||
620 | if (*dest->part_data) { | |
802a123b | 621 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
25fcce25 | 622 | (dest->part_table == HW_PART_TABLE_GPT) ? "DATA" : "primary", |
802a123b | 623 | part_start, part_start + dest->size_data - 1); |
25fcce25 MT |
624 | |
625 | part_start += dest->size_data; | |
626 | } | |
627 | ||
e9cf574d | 628 | if (dest->part_boot_idx > 0) |
25fcce25 MT |
629 | asprintf(&cmd, "%s set %d boot on", cmd, dest->part_boot_idx); |
630 | ||
e9cf574d | 631 | if (dest->part_table == HW_PART_TABLE_GPT) { |
48d6a112 MT |
632 | if (*dest->part_bootldr) { |
633 | asprintf(&cmd, "%s set %d bios_grub on", cmd, dest->part_boot_idx); | |
634 | } | |
25fcce25 MT |
635 | asprintf(&cmd, "%s disk_set pmbr_boot on", cmd); |
636 | } | |
637 | ||
46b56e20 | 638 | r = mysystem(output, cmd); |
25fcce25 | 639 | |
268090a8 MT |
640 | // Wait until the system re-read the partition table |
641 | if (r == 0) { | |
642 | unsigned int counter = 10; | |
643 | ||
644 | while (counter-- > 0) { | |
645 | sleep(1); | |
646 | ||
0e491487 | 647 | if (*dest->part_bootldr && (try_open(dest->part_bootldr) != 0)) |
48d6a112 MT |
648 | continue; |
649 | ||
0e491487 | 650 | if (*dest->part_boot && (try_open(dest->part_boot) != 0)) |
268090a8 MT |
651 | continue; |
652 | ||
0e491487 | 653 | if (*dest->part_swap && (try_open(dest->part_swap) != 0)) |
268090a8 MT |
654 | continue; |
655 | ||
0e491487 | 656 | if (*dest->part_root && (try_open(dest->part_root) != 0)) |
268090a8 MT |
657 | continue; |
658 | ||
0e491487 | 659 | if (*dest->part_data && (try_open(dest->part_data) != 0)) |
268090a8 MT |
660 | continue; |
661 | ||
662 | // All partitions do exist, exiting the loop. | |
663 | break; | |
664 | } | |
665 | } | |
666 | ||
25fcce25 MT |
667 | if (cmd) |
668 | free(cmd); | |
669 | ||
670 | return r; | |
671 | } | |
672 | ||
46b56e20 | 673 | static int hw_format_filesystem(const char* path, int fs, const char* output) { |
25fcce25 MT |
674 | char cmd[STRING_SIZE] = "\0"; |
675 | ||
676 | // Swap | |
677 | if (fs == HW_FS_SWAP) { | |
678 | snprintf(cmd, sizeof(cmd), "/sbin/mkswap -v1 %s &>/dev/null", path); | |
679 | // ReiserFS | |
680 | } else if (fs == HW_FS_REISERFS) { | |
681 | snprintf(cmd, sizeof(cmd), "/sbin/mkreiserfs -f %s ", path); | |
682 | ||
683 | // EXT4 | |
684 | } else if (fs == HW_FS_EXT4) { | |
685 | snprintf(cmd, sizeof(cmd), "/sbin/mke2fs -T ext4 %s", path); | |
686 | ||
687 | // EXT4 w/o journal | |
688 | } else if (fs == HW_FS_EXT4_WO_JOURNAL) { | |
689 | snprintf(cmd, sizeof(cmd), "/sbin/mke2fs -T ext4 -O ^has_journal %s", path); | |
70a44b52 MT |
690 | |
691 | // XFS | |
692 | } else if (fs == HW_FS_XFS) { | |
693 | snprintf(cmd, sizeof(cmd), "/sbin/mkfs.xfs -f %s", path); | |
25fcce25 MT |
694 | } |
695 | ||
696 | assert(*cmd); | |
697 | ||
46b56e20 | 698 | int r = mysystem(output, cmd); |
25fcce25 MT |
699 | |
700 | return r; | |
701 | } | |
702 | ||
46b56e20 | 703 | int hw_create_filesystems(struct hw_destination* dest, const char* output) { |
25fcce25 MT |
704 | int r; |
705 | ||
706 | // boot | |
707 | if (*dest->part_boot) { | |
46b56e20 | 708 | r = hw_format_filesystem(dest->part_boot, dest->filesystem, output); |
25fcce25 MT |
709 | if (r) |
710 | return r; | |
711 | } | |
712 | ||
713 | // swap | |
714 | if (*dest->part_swap) { | |
46b56e20 | 715 | r = hw_format_filesystem(dest->part_swap, HW_FS_SWAP, output); |
25fcce25 MT |
716 | if (r) |
717 | return r; | |
718 | } | |
719 | ||
720 | // root | |
46b56e20 | 721 | r = hw_format_filesystem(dest->part_root, dest->filesystem, output); |
25fcce25 MT |
722 | if (r) |
723 | return r; | |
724 | ||
725 | // data | |
726 | if (*dest->part_data) { | |
46b56e20 | 727 | r = hw_format_filesystem(dest->part_data, dest->filesystem, output); |
25fcce25 MT |
728 | if (r) |
729 | return r; | |
730 | } | |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
735 | int hw_mount_filesystems(struct hw_destination* dest, const char* prefix) { | |
736 | char target[STRING_SIZE]; | |
737 | ||
738 | assert(*prefix == '/'); | |
739 | ||
740 | const char* filesystem; | |
741 | switch (dest->filesystem) { | |
742 | case HW_FS_REISERFS: | |
743 | filesystem = "reiserfs"; | |
744 | break; | |
745 | ||
746 | case HW_FS_EXT4: | |
747 | case HW_FS_EXT4_WO_JOURNAL: | |
748 | filesystem = "ext4"; | |
749 | break; | |
750 | ||
70a44b52 MT |
751 | case HW_FS_XFS: |
752 | filesystem = "xfs"; | |
753 | break; | |
754 | ||
25fcce25 MT |
755 | default: |
756 | assert(0); | |
757 | } | |
758 | ||
759 | // root | |
760 | int r = hw_mount(dest->part_root, prefix, filesystem, 0); | |
761 | if (r) | |
762 | return r; | |
763 | ||
764 | // boot | |
765 | if (*dest->part_boot) { | |
766 | snprintf(target, sizeof(target), "%s%s", prefix, HW_PATH_BOOT); | |
767 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
768 | ||
769 | r = hw_mount(dest->part_boot, target, filesystem, 0); | |
770 | if (r) { | |
771 | hw_umount_filesystems(dest, prefix); | |
772 | ||
773 | return r; | |
774 | } | |
775 | } | |
776 | ||
777 | // data | |
778 | if (*dest->part_data) { | |
779 | snprintf(target, sizeof(target), "%s%s", prefix, HW_PATH_DATA); | |
780 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
781 | ||
782 | r = hw_mount(dest->part_data, target, filesystem, 0); | |
783 | if (r) { | |
784 | hw_umount_filesystems(dest, prefix); | |
785 | ||
786 | return r; | |
787 | } | |
788 | } | |
789 | ||
790 | // swap | |
791 | if (*dest->part_swap) { | |
792 | r = swapon(dest->part_swap, 0); | |
793 | if (r) { | |
794 | hw_umount_filesystems(dest, prefix); | |
795 | ||
796 | return r; | |
797 | } | |
798 | } | |
799 | ||
800 | // bind-mount misc filesystems | |
801 | char** otherfs = other_filesystems; | |
802 | while (*otherfs) { | |
803 | snprintf(target, sizeof(target), "%s%s", prefix, *otherfs); | |
804 | ||
805 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
806 | r = hw_mount(*otherfs, target, NULL, MS_BIND); | |
807 | if (r) { | |
808 | hw_umount_filesystems(dest, prefix); | |
809 | ||
810 | return r; | |
811 | } | |
812 | ||
813 | otherfs++; | |
814 | } | |
815 | ||
816 | return 0; | |
817 | } | |
818 | ||
819 | int hw_umount_filesystems(struct hw_destination* dest, const char* prefix) { | |
ddd32a5c MT |
820 | // Write all buffers to disk before umounting |
821 | hw_sync(); | |
822 | ||
25fcce25 MT |
823 | // boot |
824 | if (*dest->part_boot) { | |
825 | hw_umount(dest->part_boot); | |
826 | } | |
827 | ||
828 | // data | |
829 | if (*dest->part_data) { | |
830 | hw_umount(dest->part_data); | |
831 | } | |
832 | ||
833 | // root | |
834 | hw_umount(dest->part_root); | |
835 | ||
836 | // swap | |
837 | if (*dest->part_swap) { | |
838 | swapoff(dest->part_swap); | |
839 | } | |
840 | ||
841 | // misc filesystems | |
842 | char target[STRING_SIZE]; | |
843 | char** otherfs = other_filesystems; | |
844 | ||
845 | while (*otherfs) { | |
846 | snprintf(target, sizeof(target), "%s%s", prefix, *otherfs++); | |
847 | hw_umount(target); | |
848 | } | |
849 | ||
850 | return 0; | |
851 | } | |
4a0d9bef | 852 | |
d78fffa0 | 853 | int hw_destroy_raid_superblocks(const struct hw_destination* dest, const char* output) { |
d2fafe03 MT |
854 | char cmd[STRING_SIZE]; |
855 | ||
46b56e20 MT |
856 | hw_stop_all_raid_arrays(output); |
857 | hw_stop_all_raid_arrays(output); | |
d2fafe03 MT |
858 | |
859 | if (dest->disk1) { | |
46b56e20 MT |
860 | snprintf(cmd, sizeof(cmd), "/sbin/mdadm --zero-superblock %s", dest->disk1->path); |
861 | mysystem(output, cmd); | |
d2fafe03 MT |
862 | } |
863 | ||
864 | if (dest->disk2) { | |
46b56e20 MT |
865 | snprintf(cmd, sizeof(cmd), "/sbin/mdadm --zero-superblock %s", dest->disk2->path); |
866 | mysystem(output, cmd); | |
d2fafe03 MT |
867 | } |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
46b56e20 | 872 | int hw_setup_raid(struct hw_destination* dest, const char* output) { |
4a0d9bef | 873 | char* cmd = NULL; |
7b4790d3 | 874 | int r; |
4a0d9bef MT |
875 | |
876 | assert(dest->is_raid); | |
877 | ||
d2fafe03 MT |
878 | // Stop all RAID arrays that might be around (again). |
879 | // It seems that there is some sort of race-condition with udev re-enabling | |
880 | // the raid arrays and therefore locking the disks. | |
46b56e20 | 881 | r = hw_destroy_raid_superblocks(dest, output); |
d2fafe03 | 882 | |
7b4790d3 MT |
883 | asprintf(&cmd, "echo \"y\" | /sbin/mdadm --create --verbose --metadata=%s --auto=mdp %s", |
884 | RAID_METADATA, dest->path); | |
4a0d9bef MT |
885 | |
886 | switch (dest->raid_level) { | |
887 | case 1: | |
888 | asprintf(&cmd, "%s --level=1 --raid-devices=2", cmd); | |
889 | break; | |
890 | ||
891 | default: | |
892 | assert(0); | |
893 | } | |
894 | ||
895 | if (dest->disk1) { | |
896 | asprintf(&cmd, "%s %s", cmd, dest->disk1->path); | |
d2f993a7 MT |
897 | |
898 | // Clear all data at the beginning | |
899 | r = hw_zero_out_device(dest->disk1->path, MB2BYTES(10)); | |
900 | if (r <= 0) | |
901 | return r; | |
4a0d9bef MT |
902 | } |
903 | ||
904 | if (dest->disk2) { | |
905 | asprintf(&cmd, "%s %s", cmd, dest->disk2->path); | |
d2f993a7 MT |
906 | |
907 | // Clear all data at the beginning | |
908 | r = hw_zero_out_device(dest->disk2->path, MB2BYTES(10)); | |
909 | if (r <= 0) | |
910 | return r; | |
4a0d9bef MT |
911 | } |
912 | ||
46b56e20 | 913 | r = mysystem(output, cmd); |
4a0d9bef MT |
914 | free(cmd); |
915 | ||
916 | // Wait a moment until the device has been properly brought up | |
917 | if (r == 0) { | |
918 | unsigned int counter = 10; | |
919 | while (counter-- > 0) { | |
920 | sleep(1); | |
921 | ||
fde37387 MT |
922 | // If the raid device has not yet been properly brought up, |
923 | // opening it will fail with the message: Device or resource busy | |
924 | // Hence we will wait a bit until it becomes usable. | |
0e491487 | 925 | if (try_open(dest->path) == 0) |
4a0d9bef MT |
926 | break; |
927 | } | |
928 | } | |
929 | ||
930 | return r; | |
931 | } | |
932 | ||
46b56e20 MT |
933 | int hw_stop_all_raid_arrays(const char* output) { |
934 | return mysystem(output, "/sbin/mdadm --stop --scan --verbose"); | |
4a0d9bef | 935 | } |
f5007e9c | 936 | |
46b56e20 | 937 | int hw_install_bootloader(struct hw_destination* dest, const char* output) { |
f5007e9c MT |
938 | char cmd[STRING_SIZE]; |
939 | int r; | |
940 | ||
941 | // Generate configuration file | |
942 | snprintf(cmd, sizeof(cmd), "/usr/sbin/grub-mkconfig -o /boot/grub/grub.cfg"); | |
46b56e20 | 943 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
944 | if (r) |
945 | return r; | |
946 | ||
947 | char cmd_grub[STRING_SIZE]; | |
948 | snprintf(cmd_grub, sizeof(cmd_grub), "/usr/sbin/grub-install --no-floppy --recheck"); | |
949 | ||
e9cf574d | 950 | if (dest->is_raid) { |
f5007e9c | 951 | snprintf(cmd, sizeof(cmd), "%s %s", cmd_grub, dest->disk1->path); |
46b56e20 | 952 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
953 | if (r) |
954 | return r; | |
955 | ||
956 | snprintf(cmd, sizeof(cmd), "%s %s", cmd_grub, dest->disk2->path); | |
46b56e20 | 957 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
958 | } else { |
959 | snprintf(cmd, sizeof(cmd), "%s %s", cmd_grub, dest->path); | |
46b56e20 | 960 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
961 | } |
962 | ||
963 | return r; | |
964 | } | |
7f69d8a4 MT |
965 | |
966 | static char* hw_get_uuid(const char* dev) { | |
967 | blkid_probe p = blkid_new_probe_from_filename(dev); | |
968 | const char* buffer = NULL; | |
969 | char* uuid = NULL; | |
970 | ||
971 | if (!p) | |
972 | return NULL; | |
973 | ||
974 | blkid_do_probe(p); | |
975 | blkid_probe_lookup_value(p, "UUID", &buffer, NULL); | |
976 | ||
977 | if (buffer) | |
978 | uuid = strdup(buffer); | |
979 | ||
980 | blkid_free_probe(p); | |
981 | ||
982 | return uuid; | |
983 | } | |
984 | ||
985 | int hw_write_fstab(struct hw_destination* dest) { | |
986 | FILE* f = fopen(DESTINATION_MOUNT_PATH "/etc/fstab", "w"); | |
987 | if (!f) | |
988 | return -1; | |
989 | ||
990 | const char* fmt = "UUID=%s %-8s %-4s %-10s %d %d\n"; | |
991 | char* uuid = NULL; | |
992 | ||
993 | // boot | |
994 | if (*dest->part_boot) { | |
995 | uuid = hw_get_uuid(dest->part_boot); | |
996 | ||
997 | if (uuid) { | |
998 | fprintf(f, fmt, uuid, "/boot", "auto", "defaults", 1, 2); | |
999 | free(uuid); | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | // swap | |
1004 | if (*dest->part_swap) { | |
1005 | uuid = hw_get_uuid(dest->part_swap); | |
1006 | ||
1007 | if (uuid) { | |
1008 | fprintf(f, fmt, uuid, "swap", "swap", "defaults,pri=1", 0, 0); | |
1009 | free(uuid); | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | // root | |
1014 | uuid = hw_get_uuid(dest->part_root); | |
1015 | if (uuid) { | |
1016 | fprintf(f, fmt, uuid, "/", "auto", "defaults", 1, 1); | |
1017 | free(uuid); | |
1018 | } | |
1019 | ||
1020 | // data | |
1021 | if (*dest->part_data) { | |
1022 | uuid = hw_get_uuid(dest->part_data); | |
1023 | ||
1024 | if (uuid) { | |
1025 | fprintf(f, fmt, uuid, "/var", "auto", "defaults", 1, 1); | |
1026 | free(uuid); | |
1027 | } | |
1028 | } | |
1029 | ||
1030 | fclose(f); | |
1031 | ||
1032 | return 0; | |
1033 | } | |
282ec35e MT |
1034 | |
1035 | void hw_sync() { | |
1036 | sync(); | |
1037 | sync(); | |
1038 | sync(); | |
1039 | } | |
7d114284 MT |
1040 | |
1041 | int hw_start_networking(const char* output) { | |
1042 | return mysystem(output, "/usr/bin/start-networking.sh"); | |
1043 | } | |
38c6822d MT |
1044 | |
1045 | char* hw_find_backup_file(const char* output, const char* search_path) { | |
1046 | char path[STRING_SIZE]; | |
1047 | ||
1048 | snprintf(path, sizeof(path), "%s/backup.ipf", search_path); | |
1049 | int r = access(path, R_OK); | |
1050 | ||
1051 | if (r == 0) | |
1052 | return strdup(path); | |
1053 | ||
1054 | return NULL; | |
1055 | } | |
1056 | ||
1057 | int hw_restore_backup(const char* output, const char* backup_path, const char* destination) { | |
1058 | char command[STRING_SIZE]; | |
1059 | ||
1060 | snprintf(command, sizeof(command), "/bin/tar xzpf %s -C %s", backup_path, destination); | |
1061 | int rc = mysystem(output, command); | |
1062 | ||
1063 | if (rc) | |
1064 | return -1; | |
1065 | ||
1066 | return 0; | |
1067 | } |