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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> |
c0511f3a | 29 | #include <linux/loop.h> |
d7dd283b | 30 | #include <math.h> |
f0fa1795 MT |
31 | #include <stdio.h> |
32 | #include <stdlib.h> | |
33 | #include <string.h> | |
d7dd283b | 34 | #include <sys/ioctl.h> |
f0fa1795 | 35 | #include <sys/mount.h> |
c0511f3a | 36 | #include <sys/stat.h> |
25fcce25 | 37 | #include <sys/swap.h> |
5be66d81 | 38 | #include <sys/sysinfo.h> |
f0fa1795 MT |
39 | #include <unistd.h> |
40 | ||
d7dd283b MT |
41 | #include <linux/fs.h> |
42 | ||
5315fae6 MT |
43 | #include <libsmooth.h> |
44 | ||
f0fa1795 | 45 | #include "hw.h" |
25fcce25 MT |
46 | |
47 | const char* other_filesystems[] = { | |
48 | "/dev", | |
49 | "/proc", | |
50 | "/sys", | |
51 | NULL | |
52 | }; | |
f0fa1795 | 53 | |
46b56e20 | 54 | static int system_chroot(const char* output, const char* path, const char* cmd) { |
f5007e9c MT |
55 | char chroot_cmd[STRING_SIZE]; |
56 | ||
57 | snprintf(chroot_cmd, sizeof(chroot_cmd), "/usr/sbin/chroot %s %s", path, cmd); | |
58 | ||
46b56e20 | 59 | return mysystem(output, chroot_cmd); |
f5007e9c MT |
60 | } |
61 | ||
f0fa1795 MT |
62 | struct hw* hw_init() { |
63 | struct hw* hw = malloc(sizeof(*hw)); | |
64 | assert(hw); | |
65 | ||
66 | // Initialize libudev | |
67 | hw->udev = udev_new(); | |
68 | if (!hw->udev) { | |
69 | fprintf(stderr, "Could not create udev instance\n"); | |
70 | exit(1); | |
71 | } | |
72 | ||
73 | return hw; | |
74 | } | |
75 | ||
76 | void hw_free(struct hw* hw) { | |
77 | if (hw->udev) | |
78 | udev_unref(hw->udev); | |
79 | ||
80 | free(hw); | |
81 | } | |
82 | ||
83 | static int strstartswith(const char* a, const char* b) { | |
84 | return (strncmp(a, b, strlen(b)) == 0); | |
85 | } | |
86 | ||
c0511f3a MT |
87 | static char loop_device[STRING_SIZE]; |
88 | ||
89 | static int setup_loop_device(const char* source, const char* device) { | |
90 | int file_fd = open(source, O_RDWR); | |
91 | if (file_fd < 0) | |
92 | goto ERROR; | |
93 | ||
94 | int device_fd = -1; | |
95 | if ((device_fd = open(device, O_RDWR)) < 0) | |
96 | goto ERROR; | |
97 | ||
98 | if (ioctl(device_fd, LOOP_SET_FD, file_fd) < 0) | |
99 | goto ERROR; | |
100 | ||
101 | close(file_fd); | |
102 | close(device_fd); | |
103 | ||
104 | return 0; | |
105 | ||
106 | ERROR: | |
107 | if (file_fd >= 0) | |
108 | close(file_fd); | |
109 | ||
110 | if (device_fd >= 0) { | |
111 | ioctl(device_fd, LOOP_CLR_FD, 0); | |
112 | close(device_fd); | |
113 | } | |
114 | ||
115 | return -1; | |
116 | } | |
117 | ||
25fcce25 | 118 | int hw_mount(const char* source, const char* target, const char* fs, int flags) { |
c0511f3a MT |
119 | const char* loop_device = "/dev/loop0"; |
120 | ||
85f2892b MT |
121 | // Create target if it does not exist |
122 | if (access(target, X_OK) != 0) | |
123 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
124 | ||
c0511f3a MT |
125 | struct stat st; |
126 | stat(source, &st); | |
127 | ||
128 | if (S_ISREG(st.st_mode)) { | |
129 | int r = setup_loop_device(source, loop_device); | |
130 | if (r == 0) { | |
131 | source = loop_device; | |
132 | } else { | |
133 | return -1; | |
134 | } | |
135 | } | |
136 | ||
25fcce25 | 137 | return mount(source, target, fs, flags, NULL); |
f0fa1795 MT |
138 | } |
139 | ||
140 | int hw_umount(const char* target) { | |
a8d8b557 | 141 | return umount2(target, 0); |
f0fa1795 MT |
142 | } |
143 | ||
144 | static int hw_test_source_medium(const char* path) { | |
25fcce25 | 145 | int ret = hw_mount(path, SOURCE_MOUNT_PATH, "iso9660", MS_RDONLY); |
f0fa1795 MT |
146 | |
147 | // If the source could not be mounted we | |
148 | // cannot proceed. | |
5315fae6 | 149 | if (ret != 0) |
f0fa1795 MT |
150 | return ret; |
151 | ||
152 | // Check if the test file exists. | |
5315fae6 | 153 | ret = access(SOURCE_TEST_FILE, R_OK); |
f0fa1795 MT |
154 | |
155 | // Umount the test device. | |
156 | hw_umount(SOURCE_MOUNT_PATH); | |
157 | ||
5315fae6 | 158 | return (ret == 0); |
f0fa1795 MT |
159 | } |
160 | ||
161 | char* hw_find_source_medium(struct hw* hw) { | |
162 | char* ret = NULL; | |
163 | ||
164 | struct udev_enumerate* enumerate = udev_enumerate_new(hw->udev); | |
165 | ||
166 | udev_enumerate_add_match_subsystem(enumerate, "block"); | |
167 | udev_enumerate_scan_devices(enumerate); | |
168 | ||
169 | struct udev_list_entry* devices = udev_enumerate_get_list_entry(enumerate); | |
170 | ||
171 | struct udev_list_entry* dev_list_entry; | |
172 | udev_list_entry_foreach(dev_list_entry, devices) { | |
173 | const char* path = udev_list_entry_get_name(dev_list_entry); | |
174 | struct udev_device* dev = udev_device_new_from_syspath(hw->udev, path); | |
175 | ||
176 | const char* dev_path = udev_device_get_devnode(dev); | |
177 | ||
178 | // Skip everything what we cannot work with | |
179 | if (strstartswith(dev_path, "/dev/loop") || strstartswith(dev_path, "/dev/fd") || | |
4a0d9bef | 180 | strstartswith(dev_path, "/dev/ram") || strstartswith(dev_path, "/dev/md")) |
f0fa1795 MT |
181 | continue; |
182 | ||
5315fae6 | 183 | if (hw_test_source_medium(dev_path) == 0) { |
f0fa1795 MT |
184 | ret = strdup(dev_path); |
185 | } | |
186 | ||
187 | udev_device_unref(dev); | |
188 | ||
189 | // If a suitable device was found the search will end. | |
190 | if (ret) | |
191 | break; | |
192 | } | |
193 | ||
194 | udev_enumerate_unref(enumerate); | |
195 | ||
196 | return ret; | |
197 | } | |
d7dd283b MT |
198 | |
199 | static struct hw_disk** hw_create_disks() { | |
200 | struct hw_disk** ret = malloc(sizeof(*ret) * (HW_MAX_DISKS + 1)); | |
201 | ||
202 | return ret; | |
203 | } | |
204 | ||
205 | static unsigned long long hw_block_device_get_size(const char* dev) { | |
206 | int fd = open(dev, O_RDONLY); | |
207 | if (fd < 0) | |
208 | return 0; | |
209 | ||
210 | unsigned long long size = blkid_get_dev_size(fd); | |
211 | close(fd); | |
212 | ||
213 | return size; | |
214 | } | |
215 | ||
ee00d203 | 216 | struct hw_disk** hw_find_disks(struct hw* hw, const char* sourcedrive) { |
d7dd283b MT |
217 | struct hw_disk** ret = hw_create_disks(); |
218 | struct hw_disk** disks = ret; | |
219 | ||
220 | struct udev_enumerate* enumerate = udev_enumerate_new(hw->udev); | |
221 | ||
222 | udev_enumerate_add_match_subsystem(enumerate, "block"); | |
223 | udev_enumerate_scan_devices(enumerate); | |
224 | ||
225 | struct udev_list_entry* devices = udev_enumerate_get_list_entry(enumerate); | |
226 | ||
227 | struct udev_list_entry* dev_list_entry; | |
228 | unsigned int i = HW_MAX_DISKS; | |
229 | udev_list_entry_foreach(dev_list_entry, devices) { | |
230 | const char* path = udev_list_entry_get_name(dev_list_entry); | |
231 | struct udev_device* dev = udev_device_new_from_syspath(hw->udev, path); | |
232 | ||
233 | const char* dev_path = udev_device_get_devnode(dev); | |
234 | ||
235 | // Skip everything what we cannot work with | |
236 | if (strstartswith(dev_path, "/dev/loop") || strstartswith(dev_path, "/dev/fd") || | |
4a0d9bef MT |
237 | strstartswith(dev_path, "/dev/ram") || strstartswith(dev_path, "/dev/sr") || |
238 | strstartswith(dev_path, "/dev/md")) { | |
d7dd283b MT |
239 | udev_device_unref(dev); |
240 | continue; | |
241 | } | |
242 | ||
ee00d203 MT |
243 | // Skip sourcedrive if we need to |
244 | if (sourcedrive && (strcmp(dev_path, sourcedrive) == 0)) { | |
d7dd283b MT |
245 | udev_device_unref(dev); |
246 | continue; | |
247 | } | |
248 | ||
ee00d203 MT |
249 | // DEVTYPE must be disk (otherwise we will see all sorts of partitions here) |
250 | const char* devtype = udev_device_get_property_value(dev, "DEVTYPE"); | |
251 | if (devtype && (strcmp(devtype, "disk") != 0)) { | |
d7dd283b MT |
252 | udev_device_unref(dev); |
253 | continue; | |
254 | } | |
255 | ||
256 | // Skip devices with a size of zero | |
257 | unsigned long long size = hw_block_device_get_size(dev_path); | |
258 | if (size == 0) { | |
259 | udev_device_unref(dev); | |
260 | continue; | |
261 | } | |
262 | ||
263 | struct hw_disk* disk = malloc(sizeof(*disk)); | |
264 | if (disk == NULL) | |
265 | return NULL; | |
266 | ||
267 | disk->ref = 1; | |
268 | ||
269 | strncpy(disk->path, dev_path, sizeof(disk->path)); | |
0c8b2d99 | 270 | const char* p = disk->path + 5; |
d7dd283b MT |
271 | |
272 | disk->size = size; | |
273 | ||
274 | // Vendor | |
275 | const char* vendor = udev_device_get_property_value(dev, "ID_VENDOR"); | |
276 | if (!vendor) | |
277 | vendor = udev_device_get_sysattr_value(dev, "vendor"); | |
278 | if (!vendor) | |
279 | vendor = udev_device_get_sysattr_value(dev, "manufacturer"); | |
d7dd283b | 280 | |
4c812463 MT |
281 | if (vendor) |
282 | strncpy(disk->vendor, vendor, sizeof(disk->vendor)); | |
283 | else | |
284 | *disk->vendor = '\0'; | |
d7dd283b MT |
285 | |
286 | // Model | |
287 | const char* model = udev_device_get_property_value(dev, "ID_MODEL"); | |
288 | if (!model) | |
289 | model = udev_device_get_sysattr_value(dev, "model"); | |
290 | if (!model) | |
291 | model = udev_device_get_sysattr_value(dev, "product"); | |
d7dd283b | 292 | |
4c812463 MT |
293 | if (model) |
294 | strncpy(disk->model, model, sizeof(disk->model)); | |
295 | else | |
296 | *disk->model = '\0'; | |
297 | ||
298 | // Format description | |
299 | char size_str[STRING_SIZE]; | |
300 | snprintf(size_str, sizeof(size_str), "%4.1fGB", (double)disk->size / pow(1024, 3)); | |
d7dd283b | 301 | |
4c812463 MT |
302 | if (*disk->vendor && *disk->model) { |
303 | snprintf(disk->description, sizeof(disk->description), | |
0c8b2d99 | 304 | "%s - %s - %s - %s", size_str, p, disk->vendor, disk->model); |
4c812463 MT |
305 | |
306 | } else if (*disk->vendor || *disk->model) { | |
307 | snprintf(disk->description, sizeof(disk->description), | |
0c8b2d99 | 308 | "%s - %s - %s", size_str, p, (*disk->vendor) ? disk->vendor : disk->model); |
4c812463 MT |
309 | |
310 | } else { | |
311 | snprintf(disk->description, sizeof(disk->description), | |
0c8b2d99 | 312 | "%s - %s", size_str, p); |
4c812463 | 313 | } |
d7dd283b MT |
314 | |
315 | *disks++ = disk; | |
316 | ||
317 | if (--i == 0) | |
318 | break; | |
319 | ||
320 | udev_device_unref(dev); | |
321 | } | |
322 | ||
323 | udev_enumerate_unref(enumerate); | |
324 | ||
325 | *disks = NULL; | |
326 | ||
327 | return ret; | |
328 | } | |
329 | ||
330 | void hw_free_disks(struct hw_disk** disks) { | |
331 | struct hw_disk** disk = disks; | |
332 | ||
333 | while (*disk != NULL) { | |
334 | if (--(*disk)->ref == 0) | |
335 | free(*disk); | |
336 | ||
337 | disk++; | |
338 | } | |
339 | ||
340 | free(disks); | |
341 | } | |
342 | ||
335c5bd1 | 343 | unsigned int hw_count_disks(const struct hw_disk** disks) { |
d7dd283b MT |
344 | unsigned int ret = 0; |
345 | ||
346 | while (*disks++) | |
347 | ret++; | |
348 | ||
349 | return ret; | |
350 | } | |
351 | ||
352 | struct hw_disk** hw_select_disks(struct hw_disk** disks, int* selection) { | |
353 | struct hw_disk** ret = hw_create_disks(); | |
354 | struct hw_disk** selected_disks = ret; | |
355 | ||
335c5bd1 | 356 | unsigned int num_disks = hw_count_disks((const struct hw_disk**)disks); |
d7dd283b MT |
357 | |
358 | for (unsigned int i = 0; i < num_disks; i++) { | |
ee43f517 | 359 | if (!selection || selection[i]) { |
d7dd283b MT |
360 | struct hw_disk *selected_disk = disks[i]; |
361 | selected_disk->ref++; | |
362 | ||
363 | *selected_disks++ = selected_disk; | |
364 | } | |
365 | } | |
366 | ||
367 | // Set sentinel | |
368 | *selected_disks = NULL; | |
369 | ||
370 | return ret; | |
371 | } | |
372 | ||
a3e135c8 MT |
373 | struct hw_disk** hw_select_first_disk(const struct hw_disk** disks) { |
374 | struct hw_disk** ret = hw_create_disks(); | |
375 | struct hw_disk** selected_disks = ret; | |
376 | ||
377 | unsigned int num_disks = hw_count_disks(disks); | |
378 | assert(num_disks > 0); | |
379 | ||
380 | for (unsigned int i = 0; i < num_disks; i++) { | |
381 | struct hw_disk *disk = disks[i]; | |
382 | disk->ref++; | |
383 | ||
384 | *selected_disks++ = disk; | |
385 | break; | |
386 | } | |
387 | ||
388 | // Set sentinel | |
389 | *selected_disks = NULL; | |
390 | ||
391 | return ret; | |
392 | } | |
393 | ||
25fcce25 MT |
394 | static unsigned long long hw_swap_size(struct hw_destination* dest) { |
395 | unsigned long long memory = hw_memory(); | |
396 | ||
397 | unsigned long long swap_size = memory / 4; | |
398 | ||
399 | // Min. swap size is 128MB | |
400 | if (swap_size < MB2BYTES(128)) | |
401 | swap_size = MB2BYTES(128); | |
402 | ||
403 | // Cap swap size to 1GB | |
404 | else if (swap_size > MB2BYTES(1024)) | |
405 | swap_size = MB2BYTES(1024); | |
406 | ||
407 | return swap_size; | |
408 | } | |
409 | ||
410 | static unsigned long long hw_root_size(struct hw_destination* dest) { | |
411 | unsigned long long root_size; | |
412 | ||
413 | if (dest->size < MB2BYTES(2048)) | |
414 | root_size = MB2BYTES(1024); | |
415 | ||
416 | else if (dest->size >= MB2BYTES(2048) && dest->size <= MB2BYTES(3072)) | |
417 | root_size = MB2BYTES(1536); | |
418 | ||
419 | else | |
420 | root_size = MB2BYTES(2048); | |
421 | ||
422 | return root_size; | |
423 | } | |
424 | ||
425 | static unsigned long long hw_boot_size(struct hw_destination* dest) { | |
426 | return MB2BYTES(64); | |
427 | } | |
428 | ||
a691d4b3 MT |
429 | static int hw_device_has_p_suffix(const struct hw_destination* dest) { |
430 | // All RAID devices have the p suffix. | |
431 | if (dest->is_raid) | |
432 | return 1; | |
433 | ||
434 | // Devices with a number at the end have the p suffix, too. | |
435 | // e.g. mmcblk0, cciss0 | |
126d3570 | 436 | unsigned int last_char = strlen(dest->path) - 1; |
a691d4b3 MT |
437 | if ((dest->path[last_char] >= '0') && (dest->path[last_char] <= '9')) |
438 | return 1; | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
a8fca245 | 443 | static int hw_calculate_partition_table(struct hw_destination* dest, int disable_swap) { |
48d6a112 MT |
444 | char path[DEV_SIZE]; |
445 | int part_idx = 1; | |
446 | ||
a691d4b3 MT |
447 | snprintf(path, sizeof(path), "%s%s", dest->path, |
448 | hw_device_has_p_suffix(dest) ? "p" : ""); | |
48d6a112 MT |
449 | dest->part_boot_idx = 0; |
450 | ||
25fcce25 MT |
451 | // Determine the size of the target block device |
452 | if (dest->is_raid) { | |
453 | dest->size = (dest->disk1->size >= dest->disk2->size) ? | |
5315fae6 | 454 | dest->disk2->size : dest->disk1->size; |
22581f51 MT |
455 | |
456 | // The RAID will install some metadata at the end of the disk | |
457 | // and we will save up some space for that. | |
458 | dest->size -= MB2BYTES(2); | |
25fcce25 MT |
459 | } else { |
460 | dest->size = dest->disk1->size; | |
461 | } | |
462 | ||
802a123b MT |
463 | // As we add some extra space before the beginning of the first |
464 | // partition, we need to substract that here. | |
465 | dest->size -= MB2BYTES(1); | |
466 | ||
467 | // Add some more space for partition tables, etc. | |
468 | dest->size -= MB2BYTES(1); | |
469 | ||
48d6a112 MT |
470 | // Determine partition table |
471 | dest->part_table = HW_PART_TABLE_MSDOS; | |
472 | ||
473 | // Disks over 2TB need to use GPT | |
474 | if (dest->size >= MB2BYTES(2047 * 1024)) | |
475 | dest->part_table = HW_PART_TABLE_GPT; | |
476 | ||
477 | // We also use GPT on raid disks by default | |
478 | else if (dest->is_raid) | |
479 | dest->part_table = HW_PART_TABLE_GPT; | |
480 | ||
481 | // When using GPT, GRUB2 needs a little bit of space to put | |
482 | // itself in. | |
5689fc72 | 483 | if (dest->part_table == HW_PART_TABLE_GPT) { |
48d6a112 MT |
484 | snprintf(dest->part_bootldr, sizeof(dest->part_bootldr), |
485 | "%s%d", path, part_idx); | |
486 | ||
487 | dest->size_bootldr = MB2BYTES(4); | |
488 | ||
489 | dest->part_boot_idx = part_idx++; | |
490 | } else { | |
491 | *dest->part_bootldr = '\0'; | |
492 | dest->size_bootldr = 0; | |
493 | } | |
494 | ||
25fcce25 | 495 | dest->size_boot = hw_boot_size(dest); |
25fcce25 MT |
496 | dest->size_root = hw_root_size(dest); |
497 | ||
a8fca245 MT |
498 | // Should we use swap? |
499 | if (disable_swap) | |
500 | dest->size_swap = 0; | |
501 | else | |
502 | dest->size_swap = hw_swap_size(dest); | |
503 | ||
25fcce25 | 504 | // Determine the size of the data partition. |
48d6a112 MT |
505 | unsigned long long used_space = dest->size_bootldr + dest->size_boot |
506 | + dest->size_swap + dest->size_root; | |
25fcce25 MT |
507 | |
508 | // Disk is way too small | |
509 | if (used_space >= dest->size) | |
510 | return -1; | |
511 | ||
512 | dest->size_data = dest->size - used_space; | |
513 | ||
514 | // If it gets too small, we remove the swap space. | |
515 | if (dest->size_data <= MB2BYTES(256)) { | |
516 | dest->size_data += dest->size_swap; | |
517 | dest->size_swap = 0; | |
518 | } | |
519 | ||
520 | // Set partition names | |
25fcce25 | 521 | if (dest->size_boot > 0) { |
48d6a112 MT |
522 | if (dest->part_boot_idx == 0) |
523 | dest->part_boot_idx = part_idx; | |
25fcce25 MT |
524 | |
525 | snprintf(dest->part_boot, sizeof(dest->part_boot), "%s%d", path, part_idx++); | |
526 | } else | |
527 | *dest->part_boot = '\0'; | |
528 | ||
529 | if (dest->size_swap > 0) | |
530 | snprintf(dest->part_swap, sizeof(dest->part_swap), "%s%d", path, part_idx++); | |
531 | else | |
532 | *dest->part_swap = '\0'; | |
533 | ||
534 | // There is always a root partition | |
48d6a112 | 535 | if (dest->part_boot_idx == 0) |
25fcce25 MT |
536 | dest->part_boot_idx = part_idx; |
537 | ||
538 | snprintf(dest->part_root, sizeof(dest->part_root), "%s%d", path, part_idx++); | |
539 | ||
540 | if (dest->size_data > 0) | |
541 | snprintf(dest->part_data, sizeof(dest->part_data), "%s%d", path, part_idx++); | |
542 | else | |
543 | *dest->part_data = '\0'; | |
544 | ||
25fcce25 MT |
545 | return 0; |
546 | } | |
547 | ||
a8fca245 | 548 | struct hw_destination* hw_make_destination(int part_type, struct hw_disk** disks, int disable_swap) { |
d7dd283b MT |
549 | struct hw_destination* dest = malloc(sizeof(*dest)); |
550 | ||
551 | if (part_type == HW_PART_TYPE_NORMAL) { | |
552 | dest->disk1 = *disks; | |
553 | dest->disk2 = NULL; | |
554 | ||
555 | strncpy(dest->path, dest->disk1->path, sizeof(dest->path)); | |
556 | ||
557 | } else if (part_type == HW_PART_TYPE_RAID1) { | |
558 | dest->disk1 = *disks++; | |
559 | dest->disk2 = *disks; | |
4a0d9bef | 560 | dest->raid_level = 1; |
d7dd283b MT |
561 | |
562 | snprintf(dest->path, sizeof(dest->path), "/dev/md0"); | |
563 | } | |
564 | ||
565 | // Is this a RAID device? | |
566 | dest->is_raid = (part_type > HW_PART_TYPE_NORMAL); | |
567 | ||
a8fca245 | 568 | int r = hw_calculate_partition_table(dest, disable_swap); |
25fcce25 MT |
569 | if (r) |
570 | return NULL; | |
d7dd283b | 571 | |
25fcce25 MT |
572 | // Set default filesystem |
573 | dest->filesystem = HW_FS_DEFAULT; | |
d7dd283b MT |
574 | |
575 | return dest; | |
576 | } | |
c4e96674 MT |
577 | |
578 | unsigned long long hw_memory() { | |
5be66d81 | 579 | struct sysinfo si; |
c4e96674 | 580 | |
5be66d81 MT |
581 | int r = sysinfo(&si); |
582 | if (r < 0) | |
583 | return 0; | |
c4e96674 | 584 | |
5be66d81 | 585 | return si.totalram; |
c4e96674 | 586 | } |
25fcce25 | 587 | |
d2f993a7 MT |
588 | static int hw_zero_out_device(const char* path, int bytes) { |
589 | char block[512]; | |
590 | memset(block, 0, sizeof(block)); | |
591 | ||
592 | int blocks = bytes / sizeof(block); | |
593 | ||
594 | int fd = open(path, O_WRONLY); | |
595 | if (fd < 0) | |
596 | return -1; | |
597 | ||
598 | unsigned int bytes_written = 0; | |
599 | while (blocks-- > 0) { | |
600 | bytes_written += write(fd, block, sizeof(block)); | |
601 | } | |
602 | ||
603 | fsync(fd); | |
604 | close(fd); | |
605 | ||
606 | return bytes_written; | |
607 | } | |
608 | ||
0e491487 MT |
609 | static int try_open(const char* path) { |
610 | FILE* f = fopen(path, "r"); | |
611 | if (f) { | |
612 | fclose(f); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | return -1; | |
617 | } | |
618 | ||
46b56e20 | 619 | int hw_create_partitions(struct hw_destination* dest, const char* output) { |
d2f993a7 MT |
620 | // Before we write a new partition table to the disk, we will erase |
621 | // the first couple of megabytes at the beginning of the device to | |
622 | // get rid of all left other things like bootloaders and partition tables. | |
623 | // This solves some problems when changing from MBR to GPT partitions or | |
624 | // the other way around. | |
625 | int r = hw_zero_out_device(dest->path, MB2BYTES(10)); | |
626 | if (r <= 0) | |
627 | return r; | |
25fcce25 | 628 | |
d2f993a7 | 629 | char* cmd = NULL; |
25fcce25 MT |
630 | asprintf(&cmd, "/usr/sbin/parted -s %s -a optimal", dest->path); |
631 | ||
632 | // Set partition type | |
633 | if (dest->part_table == HW_PART_TABLE_MSDOS) | |
634 | asprintf(&cmd, "%s mklabel msdos", cmd); | |
635 | else if (dest->part_table == HW_PART_TABLE_GPT) | |
636 | asprintf(&cmd, "%s mklabel gpt", cmd); | |
637 | ||
802a123b | 638 | unsigned long long part_start = MB2BYTES(1); |
25fcce25 | 639 | |
48d6a112 | 640 | if (*dest->part_bootldr) { |
802a123b | 641 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
48d6a112 | 642 | (dest->part_table == HW_PART_TABLE_GPT) ? "BOOTLDR" : "primary", |
802a123b | 643 | part_start, part_start + dest->size_bootldr - 1); |
48d6a112 MT |
644 | |
645 | part_start += dest->size_bootldr; | |
646 | } | |
647 | ||
25fcce25 | 648 | if (*dest->part_boot) { |
802a123b | 649 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
25fcce25 | 650 | (dest->part_table == HW_PART_TABLE_GPT) ? "BOOT" : "primary", |
802a123b | 651 | part_start, part_start + dest->size_boot - 1); |
25fcce25 MT |
652 | |
653 | part_start += dest->size_boot; | |
654 | } | |
655 | ||
656 | if (*dest->part_swap) { | |
802a123b | 657 | asprintf(&cmd, "%s mkpart %s linux-swap %lluB %lluB", cmd, |
25fcce25 | 658 | (dest->part_table == HW_PART_TABLE_GPT) ? "SWAP" : "primary", |
802a123b | 659 | part_start, part_start + dest->size_swap - 1); |
25fcce25 MT |
660 | |
661 | part_start += dest->size_swap; | |
662 | } | |
663 | ||
664 | if (*dest->part_root) { | |
802a123b | 665 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
25fcce25 | 666 | (dest->part_table == HW_PART_TABLE_GPT) ? "ROOT" : "primary", |
802a123b | 667 | part_start, part_start + dest->size_root - 1); |
25fcce25 MT |
668 | |
669 | part_start += dest->size_root; | |
670 | } | |
671 | ||
672 | if (*dest->part_data) { | |
802a123b | 673 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
25fcce25 | 674 | (dest->part_table == HW_PART_TABLE_GPT) ? "DATA" : "primary", |
802a123b | 675 | part_start, part_start + dest->size_data - 1); |
25fcce25 MT |
676 | |
677 | part_start += dest->size_data; | |
678 | } | |
679 | ||
e9cf574d | 680 | if (dest->part_boot_idx > 0) |
25fcce25 MT |
681 | asprintf(&cmd, "%s set %d boot on", cmd, dest->part_boot_idx); |
682 | ||
e9cf574d | 683 | if (dest->part_table == HW_PART_TABLE_GPT) { |
48d6a112 MT |
684 | if (*dest->part_bootldr) { |
685 | asprintf(&cmd, "%s set %d bios_grub on", cmd, dest->part_boot_idx); | |
686 | } | |
25fcce25 MT |
687 | asprintf(&cmd, "%s disk_set pmbr_boot on", cmd); |
688 | } | |
689 | ||
46b56e20 | 690 | r = mysystem(output, cmd); |
25fcce25 | 691 | |
268090a8 MT |
692 | // Wait until the system re-read the partition table |
693 | if (r == 0) { | |
694 | unsigned int counter = 10; | |
695 | ||
696 | while (counter-- > 0) { | |
697 | sleep(1); | |
698 | ||
0e491487 | 699 | if (*dest->part_bootldr && (try_open(dest->part_bootldr) != 0)) |
48d6a112 MT |
700 | continue; |
701 | ||
0e491487 | 702 | if (*dest->part_boot && (try_open(dest->part_boot) != 0)) |
268090a8 MT |
703 | continue; |
704 | ||
0e491487 | 705 | if (*dest->part_swap && (try_open(dest->part_swap) != 0)) |
268090a8 MT |
706 | continue; |
707 | ||
0e491487 | 708 | if (*dest->part_root && (try_open(dest->part_root) != 0)) |
268090a8 MT |
709 | continue; |
710 | ||
0e491487 | 711 | if (*dest->part_data && (try_open(dest->part_data) != 0)) |
268090a8 MT |
712 | continue; |
713 | ||
714 | // All partitions do exist, exiting the loop. | |
715 | break; | |
716 | } | |
717 | } | |
718 | ||
25fcce25 MT |
719 | if (cmd) |
720 | free(cmd); | |
721 | ||
722 | return r; | |
723 | } | |
724 | ||
46b56e20 | 725 | static int hw_format_filesystem(const char* path, int fs, const char* output) { |
25fcce25 MT |
726 | char cmd[STRING_SIZE] = "\0"; |
727 | ||
728 | // Swap | |
729 | if (fs == HW_FS_SWAP) { | |
730 | snprintf(cmd, sizeof(cmd), "/sbin/mkswap -v1 %s &>/dev/null", path); | |
731 | // ReiserFS | |
732 | } else if (fs == HW_FS_REISERFS) { | |
733 | snprintf(cmd, sizeof(cmd), "/sbin/mkreiserfs -f %s ", path); | |
734 | ||
735 | // EXT4 | |
736 | } else if (fs == HW_FS_EXT4) { | |
737 | snprintf(cmd, sizeof(cmd), "/sbin/mke2fs -T ext4 %s", path); | |
738 | ||
739 | // EXT4 w/o journal | |
740 | } else if (fs == HW_FS_EXT4_WO_JOURNAL) { | |
741 | snprintf(cmd, sizeof(cmd), "/sbin/mke2fs -T ext4 -O ^has_journal %s", path); | |
70a44b52 MT |
742 | |
743 | // XFS | |
744 | } else if (fs == HW_FS_XFS) { | |
745 | snprintf(cmd, sizeof(cmd), "/sbin/mkfs.xfs -f %s", path); | |
25fcce25 MT |
746 | } |
747 | ||
748 | assert(*cmd); | |
749 | ||
46b56e20 | 750 | int r = mysystem(output, cmd); |
25fcce25 MT |
751 | |
752 | return r; | |
753 | } | |
754 | ||
46b56e20 | 755 | int hw_create_filesystems(struct hw_destination* dest, const char* output) { |
25fcce25 MT |
756 | int r; |
757 | ||
758 | // boot | |
759 | if (*dest->part_boot) { | |
46b56e20 | 760 | r = hw_format_filesystem(dest->part_boot, dest->filesystem, output); |
25fcce25 MT |
761 | if (r) |
762 | return r; | |
763 | } | |
764 | ||
765 | // swap | |
766 | if (*dest->part_swap) { | |
46b56e20 | 767 | r = hw_format_filesystem(dest->part_swap, HW_FS_SWAP, output); |
25fcce25 MT |
768 | if (r) |
769 | return r; | |
770 | } | |
771 | ||
772 | // root | |
46b56e20 | 773 | r = hw_format_filesystem(dest->part_root, dest->filesystem, output); |
25fcce25 MT |
774 | if (r) |
775 | return r; | |
776 | ||
777 | // data | |
778 | if (*dest->part_data) { | |
46b56e20 | 779 | r = hw_format_filesystem(dest->part_data, dest->filesystem, output); |
25fcce25 MT |
780 | if (r) |
781 | return r; | |
782 | } | |
783 | ||
784 | return 0; | |
785 | } | |
786 | ||
787 | int hw_mount_filesystems(struct hw_destination* dest, const char* prefix) { | |
788 | char target[STRING_SIZE]; | |
789 | ||
790 | assert(*prefix == '/'); | |
791 | ||
792 | const char* filesystem; | |
793 | switch (dest->filesystem) { | |
794 | case HW_FS_REISERFS: | |
795 | filesystem = "reiserfs"; | |
796 | break; | |
797 | ||
798 | case HW_FS_EXT4: | |
799 | case HW_FS_EXT4_WO_JOURNAL: | |
800 | filesystem = "ext4"; | |
801 | break; | |
802 | ||
70a44b52 MT |
803 | case HW_FS_XFS: |
804 | filesystem = "xfs"; | |
805 | break; | |
806 | ||
25fcce25 MT |
807 | default: |
808 | assert(0); | |
809 | } | |
810 | ||
811 | // root | |
812 | int r = hw_mount(dest->part_root, prefix, filesystem, 0); | |
813 | if (r) | |
814 | return r; | |
815 | ||
816 | // boot | |
817 | if (*dest->part_boot) { | |
818 | snprintf(target, sizeof(target), "%s%s", prefix, HW_PATH_BOOT); | |
819 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
820 | ||
821 | r = hw_mount(dest->part_boot, target, filesystem, 0); | |
822 | if (r) { | |
823 | hw_umount_filesystems(dest, prefix); | |
824 | ||
825 | return r; | |
826 | } | |
827 | } | |
828 | ||
829 | // data | |
830 | if (*dest->part_data) { | |
831 | snprintf(target, sizeof(target), "%s%s", prefix, HW_PATH_DATA); | |
832 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
833 | ||
834 | r = hw_mount(dest->part_data, target, filesystem, 0); | |
835 | if (r) { | |
836 | hw_umount_filesystems(dest, prefix); | |
837 | ||
838 | return r; | |
839 | } | |
840 | } | |
841 | ||
842 | // swap | |
843 | if (*dest->part_swap) { | |
844 | r = swapon(dest->part_swap, 0); | |
845 | if (r) { | |
846 | hw_umount_filesystems(dest, prefix); | |
847 | ||
848 | return r; | |
849 | } | |
850 | } | |
851 | ||
852 | // bind-mount misc filesystems | |
853 | char** otherfs = other_filesystems; | |
854 | while (*otherfs) { | |
855 | snprintf(target, sizeof(target), "%s%s", prefix, *otherfs); | |
856 | ||
857 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
858 | r = hw_mount(*otherfs, target, NULL, MS_BIND); | |
859 | if (r) { | |
860 | hw_umount_filesystems(dest, prefix); | |
861 | ||
862 | return r; | |
863 | } | |
864 | ||
865 | otherfs++; | |
866 | } | |
867 | ||
868 | return 0; | |
869 | } | |
870 | ||
871 | int hw_umount_filesystems(struct hw_destination* dest, const char* prefix) { | |
ddd32a5c MT |
872 | // Write all buffers to disk before umounting |
873 | hw_sync(); | |
874 | ||
25fcce25 MT |
875 | // boot |
876 | if (*dest->part_boot) { | |
877 | hw_umount(dest->part_boot); | |
878 | } | |
879 | ||
880 | // data | |
881 | if (*dest->part_data) { | |
882 | hw_umount(dest->part_data); | |
883 | } | |
884 | ||
885 | // root | |
886 | hw_umount(dest->part_root); | |
887 | ||
888 | // swap | |
889 | if (*dest->part_swap) { | |
890 | swapoff(dest->part_swap); | |
891 | } | |
892 | ||
893 | // misc filesystems | |
894 | char target[STRING_SIZE]; | |
895 | char** otherfs = other_filesystems; | |
896 | ||
897 | while (*otherfs) { | |
898 | snprintf(target, sizeof(target), "%s%s", prefix, *otherfs++); | |
899 | hw_umount(target); | |
900 | } | |
901 | ||
902 | return 0; | |
903 | } | |
4a0d9bef | 904 | |
d78fffa0 | 905 | int hw_destroy_raid_superblocks(const struct hw_destination* dest, const char* output) { |
d2fafe03 MT |
906 | char cmd[STRING_SIZE]; |
907 | ||
46b56e20 MT |
908 | hw_stop_all_raid_arrays(output); |
909 | hw_stop_all_raid_arrays(output); | |
d2fafe03 MT |
910 | |
911 | if (dest->disk1) { | |
46b56e20 MT |
912 | snprintf(cmd, sizeof(cmd), "/sbin/mdadm --zero-superblock %s", dest->disk1->path); |
913 | mysystem(output, cmd); | |
d2fafe03 MT |
914 | } |
915 | ||
916 | if (dest->disk2) { | |
46b56e20 MT |
917 | snprintf(cmd, sizeof(cmd), "/sbin/mdadm --zero-superblock %s", dest->disk2->path); |
918 | mysystem(output, cmd); | |
d2fafe03 MT |
919 | } |
920 | ||
921 | return 0; | |
922 | } | |
923 | ||
46b56e20 | 924 | int hw_setup_raid(struct hw_destination* dest, const char* output) { |
4a0d9bef | 925 | char* cmd = NULL; |
7b4790d3 | 926 | int r; |
4a0d9bef MT |
927 | |
928 | assert(dest->is_raid); | |
929 | ||
d2fafe03 MT |
930 | // Stop all RAID arrays that might be around (again). |
931 | // It seems that there is some sort of race-condition with udev re-enabling | |
932 | // the raid arrays and therefore locking the disks. | |
46b56e20 | 933 | r = hw_destroy_raid_superblocks(dest, output); |
d2fafe03 | 934 | |
7b4790d3 MT |
935 | asprintf(&cmd, "echo \"y\" | /sbin/mdadm --create --verbose --metadata=%s --auto=mdp %s", |
936 | RAID_METADATA, dest->path); | |
4a0d9bef MT |
937 | |
938 | switch (dest->raid_level) { | |
939 | case 1: | |
940 | asprintf(&cmd, "%s --level=1 --raid-devices=2", cmd); | |
941 | break; | |
942 | ||
943 | default: | |
944 | assert(0); | |
945 | } | |
946 | ||
947 | if (dest->disk1) { | |
948 | asprintf(&cmd, "%s %s", cmd, dest->disk1->path); | |
d2f993a7 MT |
949 | |
950 | // Clear all data at the beginning | |
951 | r = hw_zero_out_device(dest->disk1->path, MB2BYTES(10)); | |
952 | if (r <= 0) | |
953 | return r; | |
4a0d9bef MT |
954 | } |
955 | ||
956 | if (dest->disk2) { | |
957 | asprintf(&cmd, "%s %s", cmd, dest->disk2->path); | |
d2f993a7 MT |
958 | |
959 | // Clear all data at the beginning | |
960 | r = hw_zero_out_device(dest->disk2->path, MB2BYTES(10)); | |
961 | if (r <= 0) | |
962 | return r; | |
4a0d9bef MT |
963 | } |
964 | ||
46b56e20 | 965 | r = mysystem(output, cmd); |
4a0d9bef MT |
966 | free(cmd); |
967 | ||
968 | // Wait a moment until the device has been properly brought up | |
969 | if (r == 0) { | |
970 | unsigned int counter = 10; | |
971 | while (counter-- > 0) { | |
972 | sleep(1); | |
973 | ||
fde37387 MT |
974 | // If the raid device has not yet been properly brought up, |
975 | // opening it will fail with the message: Device or resource busy | |
976 | // Hence we will wait a bit until it becomes usable. | |
0e491487 | 977 | if (try_open(dest->path) == 0) |
4a0d9bef MT |
978 | break; |
979 | } | |
980 | } | |
981 | ||
982 | return r; | |
983 | } | |
984 | ||
46b56e20 MT |
985 | int hw_stop_all_raid_arrays(const char* output) { |
986 | return mysystem(output, "/sbin/mdadm --stop --scan --verbose"); | |
4a0d9bef | 987 | } |
f5007e9c | 988 | |
46b56e20 | 989 | int hw_install_bootloader(struct hw_destination* dest, const char* output) { |
f5007e9c MT |
990 | char cmd[STRING_SIZE]; |
991 | int r; | |
992 | ||
993 | // Generate configuration file | |
994 | snprintf(cmd, sizeof(cmd), "/usr/sbin/grub-mkconfig -o /boot/grub/grub.cfg"); | |
46b56e20 | 995 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
996 | if (r) |
997 | return r; | |
998 | ||
999 | char cmd_grub[STRING_SIZE]; | |
1000 | snprintf(cmd_grub, sizeof(cmd_grub), "/usr/sbin/grub-install --no-floppy --recheck"); | |
1001 | ||
e9cf574d | 1002 | if (dest->is_raid) { |
f5007e9c | 1003 | snprintf(cmd, sizeof(cmd), "%s %s", cmd_grub, dest->disk1->path); |
46b56e20 | 1004 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
1005 | if (r) |
1006 | return r; | |
1007 | ||
1008 | snprintf(cmd, sizeof(cmd), "%s %s", cmd_grub, dest->disk2->path); | |
46b56e20 | 1009 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
1010 | } else { |
1011 | snprintf(cmd, sizeof(cmd), "%s %s", cmd_grub, dest->path); | |
46b56e20 | 1012 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
1013 | } |
1014 | ||
1015 | return r; | |
1016 | } | |
7f69d8a4 MT |
1017 | |
1018 | static char* hw_get_uuid(const char* dev) { | |
1019 | blkid_probe p = blkid_new_probe_from_filename(dev); | |
1020 | const char* buffer = NULL; | |
1021 | char* uuid = NULL; | |
1022 | ||
1023 | if (!p) | |
1024 | return NULL; | |
1025 | ||
1026 | blkid_do_probe(p); | |
1027 | blkid_probe_lookup_value(p, "UUID", &buffer, NULL); | |
1028 | ||
1029 | if (buffer) | |
1030 | uuid = strdup(buffer); | |
1031 | ||
1032 | blkid_free_probe(p); | |
1033 | ||
1034 | return uuid; | |
1035 | } | |
1036 | ||
335c5bd1 MT |
1037 | #define FSTAB_FMT "UUID=%s %-8s %-4s %-10s %d %d\n" |
1038 | ||
7f69d8a4 MT |
1039 | int hw_write_fstab(struct hw_destination* dest) { |
1040 | FILE* f = fopen(DESTINATION_MOUNT_PATH "/etc/fstab", "w"); | |
1041 | if (!f) | |
1042 | return -1; | |
1043 | ||
7f69d8a4 MT |
1044 | char* uuid = NULL; |
1045 | ||
1046 | // boot | |
1047 | if (*dest->part_boot) { | |
1048 | uuid = hw_get_uuid(dest->part_boot); | |
1049 | ||
1050 | if (uuid) { | |
335c5bd1 | 1051 | fprintf(f, FSTAB_FMT, uuid, "/boot", "auto", "defaults", 1, 2); |
7f69d8a4 MT |
1052 | free(uuid); |
1053 | } | |
1054 | } | |
1055 | ||
1056 | // swap | |
1057 | if (*dest->part_swap) { | |
1058 | uuid = hw_get_uuid(dest->part_swap); | |
1059 | ||
1060 | if (uuid) { | |
335c5bd1 | 1061 | fprintf(f, FSTAB_FMT, uuid, "swap", "swap", "defaults,pri=1", 0, 0); |
7f69d8a4 MT |
1062 | free(uuid); |
1063 | } | |
1064 | } | |
1065 | ||
1066 | // root | |
1067 | uuid = hw_get_uuid(dest->part_root); | |
1068 | if (uuid) { | |
335c5bd1 | 1069 | fprintf(f, FSTAB_FMT, uuid, "/", "auto", "defaults", 1, 1); |
7f69d8a4 MT |
1070 | free(uuid); |
1071 | } | |
1072 | ||
1073 | // data | |
1074 | if (*dest->part_data) { | |
1075 | uuid = hw_get_uuid(dest->part_data); | |
1076 | ||
1077 | if (uuid) { | |
335c5bd1 | 1078 | fprintf(f, FSTAB_FMT, uuid, "/var", "auto", "defaults", 1, 1); |
7f69d8a4 MT |
1079 | free(uuid); |
1080 | } | |
1081 | } | |
1082 | ||
1083 | fclose(f); | |
1084 | ||
1085 | return 0; | |
1086 | } | |
282ec35e MT |
1087 | |
1088 | void hw_sync() { | |
1089 | sync(); | |
1090 | sync(); | |
1091 | sync(); | |
1092 | } | |
7d114284 MT |
1093 | |
1094 | int hw_start_networking(const char* output) { | |
1095 | return mysystem(output, "/usr/bin/start-networking.sh"); | |
1096 | } | |
38c6822d MT |
1097 | |
1098 | char* hw_find_backup_file(const char* output, const char* search_path) { | |
1099 | char path[STRING_SIZE]; | |
1100 | ||
1101 | snprintf(path, sizeof(path), "%s/backup.ipf", search_path); | |
1102 | int r = access(path, R_OK); | |
1103 | ||
1104 | if (r == 0) | |
1105 | return strdup(path); | |
1106 | ||
1107 | return NULL; | |
1108 | } | |
1109 | ||
1110 | int hw_restore_backup(const char* output, const char* backup_path, const char* destination) { | |
1111 | char command[STRING_SIZE]; | |
1112 | ||
1113 | snprintf(command, sizeof(command), "/bin/tar xzpf %s -C %s", backup_path, destination); | |
1114 | int rc = mysystem(output, command); | |
1115 | ||
1116 | if (rc) | |
1117 | return -1; | |
1118 | ||
1119 | return 0; | |
1120 | } |