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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 | 26 | #include <blkid/blkid.h> |
ade96ba8 | 27 | #include <errno.h> |
d7dd283b | 28 | #include <fcntl.h> |
f0fa1795 | 29 | #include <libudev.h> |
c0511f3a | 30 | #include <linux/loop.h> |
d7dd283b | 31 | #include <math.h> |
f0fa1795 MT |
32 | #include <stdio.h> |
33 | #include <stdlib.h> | |
34 | #include <string.h> | |
d7dd283b | 35 | #include <sys/ioctl.h> |
f0fa1795 | 36 | #include <sys/mount.h> |
c0511f3a | 37 | #include <sys/stat.h> |
25fcce25 | 38 | #include <sys/swap.h> |
5be66d81 | 39 | #include <sys/sysinfo.h> |
f0fa1795 MT |
40 | #include <unistd.h> |
41 | ||
d7dd283b MT |
42 | #include <linux/fs.h> |
43 | ||
5315fae6 MT |
44 | #include <libsmooth.h> |
45 | ||
f0fa1795 | 46 | #include "hw.h" |
25fcce25 MT |
47 | |
48 | const char* other_filesystems[] = { | |
49 | "/dev", | |
50 | "/proc", | |
51 | "/sys", | |
52 | NULL | |
53 | }; | |
f0fa1795 | 54 | |
46b56e20 | 55 | static int system_chroot(const char* output, const char* path, const char* cmd) { |
f5007e9c MT |
56 | char chroot_cmd[STRING_SIZE]; |
57 | ||
58 | snprintf(chroot_cmd, sizeof(chroot_cmd), "/usr/sbin/chroot %s %s", path, cmd); | |
59 | ||
46b56e20 | 60 | return mysystem(output, chroot_cmd); |
f5007e9c MT |
61 | } |
62 | ||
f0fa1795 MT |
63 | struct hw* hw_init() { |
64 | struct hw* hw = malloc(sizeof(*hw)); | |
65 | assert(hw); | |
66 | ||
67 | // Initialize libudev | |
68 | hw->udev = udev_new(); | |
69 | if (!hw->udev) { | |
70 | fprintf(stderr, "Could not create udev instance\n"); | |
71 | exit(1); | |
72 | } | |
73 | ||
74 | return hw; | |
75 | } | |
76 | ||
77 | void hw_free(struct hw* hw) { | |
78 | if (hw->udev) | |
79 | udev_unref(hw->udev); | |
80 | ||
81 | free(hw); | |
82 | } | |
83 | ||
84 | static int strstartswith(const char* a, const char* b) { | |
85 | return (strncmp(a, b, strlen(b)) == 0); | |
86 | } | |
87 | ||
c0511f3a MT |
88 | static char loop_device[STRING_SIZE]; |
89 | ||
90 | static int setup_loop_device(const char* source, const char* device) { | |
91 | int file_fd = open(source, O_RDWR); | |
92 | if (file_fd < 0) | |
93 | goto ERROR; | |
94 | ||
95 | int device_fd = -1; | |
96 | if ((device_fd = open(device, O_RDWR)) < 0) | |
97 | goto ERROR; | |
98 | ||
99 | if (ioctl(device_fd, LOOP_SET_FD, file_fd) < 0) | |
100 | goto ERROR; | |
101 | ||
102 | close(file_fd); | |
103 | close(device_fd); | |
104 | ||
105 | return 0; | |
106 | ||
107 | ERROR: | |
108 | if (file_fd >= 0) | |
109 | close(file_fd); | |
110 | ||
111 | if (device_fd >= 0) { | |
112 | ioctl(device_fd, LOOP_CLR_FD, 0); | |
113 | close(device_fd); | |
114 | } | |
115 | ||
116 | return -1; | |
117 | } | |
118 | ||
25fcce25 | 119 | int hw_mount(const char* source, const char* target, const char* fs, int flags) { |
c0511f3a MT |
120 | const char* loop_device = "/dev/loop0"; |
121 | ||
85f2892b MT |
122 | // Create target if it does not exist |
123 | if (access(target, X_OK) != 0) | |
124 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
125 | ||
c0511f3a MT |
126 | struct stat st; |
127 | stat(source, &st); | |
128 | ||
129 | if (S_ISREG(st.st_mode)) { | |
130 | int r = setup_loop_device(source, loop_device); | |
131 | if (r == 0) { | |
132 | source = loop_device; | |
133 | } else { | |
134 | return -1; | |
135 | } | |
136 | } | |
137 | ||
25fcce25 | 138 | return mount(source, target, fs, flags, NULL); |
f0fa1795 MT |
139 | } |
140 | ||
141 | int hw_umount(const char* target) { | |
ade96ba8 MT |
142 | int r = umount2(target, 0); |
143 | ||
144 | if (r && errno == EBUSY) { | |
145 | // Give it a moment to settle | |
146 | sleep(1); | |
147 | ||
148 | r = umount2(target, MNT_FORCE); | |
149 | } | |
150 | ||
151 | return r; | |
f0fa1795 MT |
152 | } |
153 | ||
154 | static int hw_test_source_medium(const char* path) { | |
25fcce25 | 155 | int ret = hw_mount(path, SOURCE_MOUNT_PATH, "iso9660", MS_RDONLY); |
f0fa1795 MT |
156 | |
157 | // If the source could not be mounted we | |
158 | // cannot proceed. | |
5315fae6 | 159 | if (ret != 0) |
f0fa1795 MT |
160 | return ret; |
161 | ||
162 | // Check if the test file exists. | |
5315fae6 | 163 | ret = access(SOURCE_TEST_FILE, R_OK); |
f0fa1795 MT |
164 | |
165 | // Umount the test device. | |
166 | hw_umount(SOURCE_MOUNT_PATH); | |
167 | ||
fb76fc51 | 168 | return ret; |
f0fa1795 MT |
169 | } |
170 | ||
171 | char* hw_find_source_medium(struct hw* hw) { | |
172 | char* ret = NULL; | |
173 | ||
174 | struct udev_enumerate* enumerate = udev_enumerate_new(hw->udev); | |
175 | ||
176 | udev_enumerate_add_match_subsystem(enumerate, "block"); | |
177 | udev_enumerate_scan_devices(enumerate); | |
178 | ||
179 | struct udev_list_entry* devices = udev_enumerate_get_list_entry(enumerate); | |
180 | ||
181 | struct udev_list_entry* dev_list_entry; | |
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 | 190 | strstartswith(dev_path, "/dev/ram") || strstartswith(dev_path, "/dev/md")) |
f0fa1795 MT |
191 | continue; |
192 | ||
5315fae6 | 193 | if (hw_test_source_medium(dev_path) == 0) { |
f0fa1795 MT |
194 | ret = strdup(dev_path); |
195 | } | |
196 | ||
197 | udev_device_unref(dev); | |
198 | ||
199 | // If a suitable device was found the search will end. | |
200 | if (ret) | |
201 | break; | |
202 | } | |
203 | ||
204 | udev_enumerate_unref(enumerate); | |
205 | ||
206 | return ret; | |
207 | } | |
d7dd283b MT |
208 | |
209 | static struct hw_disk** hw_create_disks() { | |
210 | struct hw_disk** ret = malloc(sizeof(*ret) * (HW_MAX_DISKS + 1)); | |
211 | ||
212 | return ret; | |
213 | } | |
214 | ||
215 | static unsigned long long hw_block_device_get_size(const char* dev) { | |
216 | int fd = open(dev, O_RDONLY); | |
217 | if (fd < 0) | |
218 | return 0; | |
219 | ||
220 | unsigned long long size = blkid_get_dev_size(fd); | |
221 | close(fd); | |
222 | ||
223 | return size; | |
224 | } | |
225 | ||
ee00d203 | 226 | struct hw_disk** hw_find_disks(struct hw* hw, const char* sourcedrive) { |
d7dd283b MT |
227 | struct hw_disk** ret = hw_create_disks(); |
228 | struct hw_disk** disks = ret; | |
229 | ||
230 | struct udev_enumerate* enumerate = udev_enumerate_new(hw->udev); | |
231 | ||
232 | udev_enumerate_add_match_subsystem(enumerate, "block"); | |
233 | udev_enumerate_scan_devices(enumerate); | |
234 | ||
235 | struct udev_list_entry* devices = udev_enumerate_get_list_entry(enumerate); | |
236 | ||
237 | struct udev_list_entry* dev_list_entry; | |
238 | unsigned int i = HW_MAX_DISKS; | |
239 | udev_list_entry_foreach(dev_list_entry, devices) { | |
240 | const char* path = udev_list_entry_get_name(dev_list_entry); | |
241 | struct udev_device* dev = udev_device_new_from_syspath(hw->udev, path); | |
242 | ||
243 | const char* dev_path = udev_device_get_devnode(dev); | |
244 | ||
245 | // Skip everything what we cannot work with | |
246 | if (strstartswith(dev_path, "/dev/loop") || strstartswith(dev_path, "/dev/fd") || | |
4a0d9bef MT |
247 | strstartswith(dev_path, "/dev/ram") || strstartswith(dev_path, "/dev/sr") || |
248 | strstartswith(dev_path, "/dev/md")) { | |
d7dd283b MT |
249 | udev_device_unref(dev); |
250 | continue; | |
251 | } | |
252 | ||
ee00d203 MT |
253 | // Skip sourcedrive if we need to |
254 | if (sourcedrive && (strcmp(dev_path, sourcedrive) == 0)) { | |
d7dd283b MT |
255 | udev_device_unref(dev); |
256 | continue; | |
257 | } | |
258 | ||
ee00d203 MT |
259 | // DEVTYPE must be disk (otherwise we will see all sorts of partitions here) |
260 | const char* devtype = udev_device_get_property_value(dev, "DEVTYPE"); | |
261 | if (devtype && (strcmp(devtype, "disk") != 0)) { | |
d7dd283b MT |
262 | udev_device_unref(dev); |
263 | continue; | |
264 | } | |
265 | ||
266 | // Skip devices with a size of zero | |
267 | unsigned long long size = hw_block_device_get_size(dev_path); | |
268 | if (size == 0) { | |
269 | udev_device_unref(dev); | |
270 | continue; | |
271 | } | |
272 | ||
273 | struct hw_disk* disk = malloc(sizeof(*disk)); | |
274 | if (disk == NULL) | |
275 | return NULL; | |
276 | ||
277 | disk->ref = 1; | |
278 | ||
279 | strncpy(disk->path, dev_path, sizeof(disk->path)); | |
0c8b2d99 | 280 | const char* p = disk->path + 5; |
d7dd283b MT |
281 | |
282 | disk->size = size; | |
283 | ||
284 | // Vendor | |
285 | const char* vendor = udev_device_get_property_value(dev, "ID_VENDOR"); | |
286 | if (!vendor) | |
287 | vendor = udev_device_get_sysattr_value(dev, "vendor"); | |
288 | if (!vendor) | |
289 | vendor = udev_device_get_sysattr_value(dev, "manufacturer"); | |
d7dd283b | 290 | |
4c812463 MT |
291 | if (vendor) |
292 | strncpy(disk->vendor, vendor, sizeof(disk->vendor)); | |
293 | else | |
294 | *disk->vendor = '\0'; | |
d7dd283b MT |
295 | |
296 | // Model | |
297 | const char* model = udev_device_get_property_value(dev, "ID_MODEL"); | |
298 | if (!model) | |
299 | model = udev_device_get_sysattr_value(dev, "model"); | |
300 | if (!model) | |
301 | model = udev_device_get_sysattr_value(dev, "product"); | |
d7dd283b | 302 | |
4c812463 MT |
303 | if (model) |
304 | strncpy(disk->model, model, sizeof(disk->model)); | |
305 | else | |
306 | *disk->model = '\0'; | |
307 | ||
308 | // Format description | |
309 | char size_str[STRING_SIZE]; | |
310 | snprintf(size_str, sizeof(size_str), "%4.1fGB", (double)disk->size / pow(1024, 3)); | |
d7dd283b | 311 | |
4c812463 MT |
312 | if (*disk->vendor && *disk->model) { |
313 | snprintf(disk->description, sizeof(disk->description), | |
0c8b2d99 | 314 | "%s - %s - %s - %s", size_str, p, disk->vendor, disk->model); |
4c812463 MT |
315 | |
316 | } else if (*disk->vendor || *disk->model) { | |
317 | snprintf(disk->description, sizeof(disk->description), | |
0c8b2d99 | 318 | "%s - %s - %s", size_str, p, (*disk->vendor) ? disk->vendor : disk->model); |
4c812463 MT |
319 | |
320 | } else { | |
321 | snprintf(disk->description, sizeof(disk->description), | |
0c8b2d99 | 322 | "%s - %s", size_str, p); |
4c812463 | 323 | } |
d7dd283b | 324 | |
29afd408 MT |
325 | // Cut off the description string after 40 characters |
326 | disk->description[41] = '\0'; | |
327 | ||
d7dd283b MT |
328 | *disks++ = disk; |
329 | ||
330 | if (--i == 0) | |
331 | break; | |
332 | ||
333 | udev_device_unref(dev); | |
334 | } | |
335 | ||
336 | udev_enumerate_unref(enumerate); | |
337 | ||
338 | *disks = NULL; | |
339 | ||
340 | return ret; | |
341 | } | |
342 | ||
343 | void hw_free_disks(struct hw_disk** disks) { | |
344 | struct hw_disk** disk = disks; | |
345 | ||
346 | while (*disk != NULL) { | |
347 | if (--(*disk)->ref == 0) | |
348 | free(*disk); | |
349 | ||
350 | disk++; | |
351 | } | |
352 | ||
353 | free(disks); | |
354 | } | |
355 | ||
335c5bd1 | 356 | unsigned int hw_count_disks(const struct hw_disk** disks) { |
d7dd283b MT |
357 | unsigned int ret = 0; |
358 | ||
359 | while (*disks++) | |
360 | ret++; | |
361 | ||
362 | return ret; | |
363 | } | |
364 | ||
365 | struct hw_disk** hw_select_disks(struct hw_disk** disks, int* selection) { | |
366 | struct hw_disk** ret = hw_create_disks(); | |
367 | struct hw_disk** selected_disks = ret; | |
368 | ||
335c5bd1 | 369 | unsigned int num_disks = hw_count_disks((const struct hw_disk**)disks); |
d7dd283b MT |
370 | |
371 | for (unsigned int i = 0; i < num_disks; i++) { | |
ee43f517 | 372 | if (!selection || selection[i]) { |
d7dd283b MT |
373 | struct hw_disk *selected_disk = disks[i]; |
374 | selected_disk->ref++; | |
375 | ||
376 | *selected_disks++ = selected_disk; | |
377 | } | |
378 | } | |
379 | ||
380 | // Set sentinel | |
381 | *selected_disks = NULL; | |
382 | ||
383 | return ret; | |
384 | } | |
385 | ||
a3e135c8 MT |
386 | struct hw_disk** hw_select_first_disk(const struct hw_disk** disks) { |
387 | struct hw_disk** ret = hw_create_disks(); | |
388 | struct hw_disk** selected_disks = ret; | |
389 | ||
390 | unsigned int num_disks = hw_count_disks(disks); | |
391 | assert(num_disks > 0); | |
392 | ||
393 | for (unsigned int i = 0; i < num_disks; i++) { | |
394 | struct hw_disk *disk = disks[i]; | |
395 | disk->ref++; | |
396 | ||
397 | *selected_disks++ = disk; | |
398 | break; | |
399 | } | |
400 | ||
401 | // Set sentinel | |
402 | *selected_disks = NULL; | |
403 | ||
404 | return ret; | |
405 | } | |
406 | ||
25fcce25 MT |
407 | static unsigned long long hw_swap_size(struct hw_destination* dest) { |
408 | unsigned long long memory = hw_memory(); | |
409 | ||
410 | unsigned long long swap_size = memory / 4; | |
411 | ||
412 | // Min. swap size is 128MB | |
413 | if (swap_size < MB2BYTES(128)) | |
414 | swap_size = MB2BYTES(128); | |
415 | ||
416 | // Cap swap size to 1GB | |
417 | else if (swap_size > MB2BYTES(1024)) | |
418 | swap_size = MB2BYTES(1024); | |
419 | ||
420 | return swap_size; | |
421 | } | |
422 | ||
25fcce25 | 423 | static unsigned long long hw_boot_size(struct hw_destination* dest) { |
bea1884b | 424 | return MB2BYTES(128); |
25fcce25 MT |
425 | } |
426 | ||
a691d4b3 MT |
427 | static int hw_device_has_p_suffix(const struct hw_destination* dest) { |
428 | // All RAID devices have the p suffix. | |
429 | if (dest->is_raid) | |
430 | return 1; | |
431 | ||
432 | // Devices with a number at the end have the p suffix, too. | |
433 | // e.g. mmcblk0, cciss0 | |
126d3570 | 434 | unsigned int last_char = strlen(dest->path) - 1; |
a691d4b3 MT |
435 | if ((dest->path[last_char] >= '0') && (dest->path[last_char] <= '9')) |
436 | return 1; | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
a8fca245 | 441 | static int hw_calculate_partition_table(struct hw_destination* dest, int disable_swap) { |
48d6a112 MT |
442 | char path[DEV_SIZE]; |
443 | int part_idx = 1; | |
444 | ||
a691d4b3 MT |
445 | snprintf(path, sizeof(path), "%s%s", dest->path, |
446 | hw_device_has_p_suffix(dest) ? "p" : ""); | |
48d6a112 MT |
447 | dest->part_boot_idx = 0; |
448 | ||
25fcce25 MT |
449 | // Determine the size of the target block device |
450 | if (dest->is_raid) { | |
451 | dest->size = (dest->disk1->size >= dest->disk2->size) ? | |
5315fae6 | 452 | dest->disk2->size : dest->disk1->size; |
22581f51 MT |
453 | |
454 | // The RAID will install some metadata at the end of the disk | |
455 | // and we will save up some space for that. | |
456 | dest->size -= MB2BYTES(2); | |
25fcce25 MT |
457 | } else { |
458 | dest->size = dest->disk1->size; | |
459 | } | |
460 | ||
802a123b MT |
461 | // As we add some extra space before the beginning of the first |
462 | // partition, we need to substract that here. | |
463 | dest->size -= MB2BYTES(1); | |
464 | ||
465 | // Add some more space for partition tables, etc. | |
466 | dest->size -= MB2BYTES(1); | |
467 | ||
c577571e MT |
468 | // The disk has to have at least 2GB |
469 | if (dest->size <= MB2BYTES(2048)) | |
470 | return -1; | |
471 | ||
48d6a112 MT |
472 | // Determine partition table |
473 | dest->part_table = HW_PART_TABLE_MSDOS; | |
474 | ||
475 | // Disks over 2TB need to use GPT | |
476 | if (dest->size >= MB2BYTES(2047 * 1024)) | |
477 | dest->part_table = HW_PART_TABLE_GPT; | |
478 | ||
479 | // We also use GPT on raid disks by default | |
480 | else if (dest->is_raid) | |
481 | dest->part_table = HW_PART_TABLE_GPT; | |
482 | ||
483 | // When using GPT, GRUB2 needs a little bit of space to put | |
484 | // itself in. | |
5689fc72 | 485 | if (dest->part_table == HW_PART_TABLE_GPT) { |
48d6a112 MT |
486 | snprintf(dest->part_bootldr, sizeof(dest->part_bootldr), |
487 | "%s%d", path, part_idx); | |
488 | ||
489 | dest->size_bootldr = MB2BYTES(4); | |
490 | ||
491 | dest->part_boot_idx = part_idx++; | |
492 | } else { | |
493 | *dest->part_bootldr = '\0'; | |
494 | dest->size_bootldr = 0; | |
495 | } | |
496 | ||
25fcce25 | 497 | dest->size_boot = hw_boot_size(dest); |
c577571e MT |
498 | |
499 | // Determine the size of the data partition. | |
500 | unsigned long long space_left = dest->size - \ | |
501 | (dest->size_bootldr + dest->size_boot); | |
502 | ||
503 | // If we have less than 2GB left, we disable swap | |
504 | if (space_left <= MB2BYTES(2048)) | |
505 | disable_swap = 1; | |
25fcce25 | 506 | |
a8fca245 MT |
507 | // Should we use swap? |
508 | if (disable_swap) | |
509 | dest->size_swap = 0; | |
510 | else | |
511 | dest->size_swap = hw_swap_size(dest); | |
512 | ||
c577571e MT |
513 | // Subtract swap |
514 | space_left -= dest->size_swap; | |
25fcce25 | 515 | |
c577571e MT |
516 | // Root is getting what ever is left |
517 | dest->size_root = space_left; | |
25fcce25 MT |
518 | |
519 | // Set partition names | |
25fcce25 | 520 | if (dest->size_boot > 0) { |
48d6a112 MT |
521 | if (dest->part_boot_idx == 0) |
522 | dest->part_boot_idx = part_idx; | |
25fcce25 MT |
523 | |
524 | snprintf(dest->part_boot, sizeof(dest->part_boot), "%s%d", path, part_idx++); | |
525 | } else | |
526 | *dest->part_boot = '\0'; | |
527 | ||
528 | if (dest->size_swap > 0) | |
529 | snprintf(dest->part_swap, sizeof(dest->part_swap), "%s%d", path, part_idx++); | |
530 | else | |
531 | *dest->part_swap = '\0'; | |
532 | ||
533 | // There is always a root partition | |
48d6a112 | 534 | if (dest->part_boot_idx == 0) |
25fcce25 MT |
535 | dest->part_boot_idx = part_idx; |
536 | ||
537 | snprintf(dest->part_root, sizeof(dest->part_root), "%s%d", path, part_idx++); | |
538 | ||
25fcce25 MT |
539 | return 0; |
540 | } | |
541 | ||
a8fca245 | 542 | struct hw_destination* hw_make_destination(int part_type, struct hw_disk** disks, int disable_swap) { |
d7dd283b MT |
543 | struct hw_destination* dest = malloc(sizeof(*dest)); |
544 | ||
545 | if (part_type == HW_PART_TYPE_NORMAL) { | |
546 | dest->disk1 = *disks; | |
547 | dest->disk2 = NULL; | |
548 | ||
549 | strncpy(dest->path, dest->disk1->path, sizeof(dest->path)); | |
550 | ||
551 | } else if (part_type == HW_PART_TYPE_RAID1) { | |
552 | dest->disk1 = *disks++; | |
553 | dest->disk2 = *disks; | |
4a0d9bef | 554 | dest->raid_level = 1; |
d7dd283b MT |
555 | |
556 | snprintf(dest->path, sizeof(dest->path), "/dev/md0"); | |
557 | } | |
558 | ||
559 | // Is this a RAID device? | |
560 | dest->is_raid = (part_type > HW_PART_TYPE_NORMAL); | |
561 | ||
a8fca245 | 562 | int r = hw_calculate_partition_table(dest, disable_swap); |
25fcce25 MT |
563 | if (r) |
564 | return NULL; | |
d7dd283b | 565 | |
25fcce25 MT |
566 | // Set default filesystem |
567 | dest->filesystem = HW_FS_DEFAULT; | |
d7dd283b MT |
568 | |
569 | return dest; | |
570 | } | |
c4e96674 MT |
571 | |
572 | unsigned long long hw_memory() { | |
5be66d81 | 573 | struct sysinfo si; |
c4e96674 | 574 | |
5be66d81 MT |
575 | int r = sysinfo(&si); |
576 | if (r < 0) | |
577 | return 0; | |
c4e96674 | 578 | |
5be66d81 | 579 | return si.totalram; |
c4e96674 | 580 | } |
25fcce25 | 581 | |
d2f993a7 MT |
582 | static int hw_zero_out_device(const char* path, int bytes) { |
583 | char block[512]; | |
584 | memset(block, 0, sizeof(block)); | |
585 | ||
586 | int blocks = bytes / sizeof(block); | |
587 | ||
588 | int fd = open(path, O_WRONLY); | |
589 | if (fd < 0) | |
590 | return -1; | |
591 | ||
592 | unsigned int bytes_written = 0; | |
593 | while (blocks-- > 0) { | |
594 | bytes_written += write(fd, block, sizeof(block)); | |
595 | } | |
596 | ||
597 | fsync(fd); | |
598 | close(fd); | |
599 | ||
600 | return bytes_written; | |
601 | } | |
602 | ||
0e491487 MT |
603 | static int try_open(const char* path) { |
604 | FILE* f = fopen(path, "r"); | |
605 | if (f) { | |
606 | fclose(f); | |
607 | return 0; | |
608 | } | |
609 | ||
610 | return -1; | |
611 | } | |
612 | ||
46b56e20 | 613 | int hw_create_partitions(struct hw_destination* dest, const char* output) { |
d2f993a7 MT |
614 | // Before we write a new partition table to the disk, we will erase |
615 | // the first couple of megabytes at the beginning of the device to | |
616 | // get rid of all left other things like bootloaders and partition tables. | |
617 | // This solves some problems when changing from MBR to GPT partitions or | |
618 | // the other way around. | |
619 | int r = hw_zero_out_device(dest->path, MB2BYTES(10)); | |
620 | if (r <= 0) | |
621 | return r; | |
25fcce25 | 622 | |
d2f993a7 | 623 | char* cmd = NULL; |
25fcce25 MT |
624 | asprintf(&cmd, "/usr/sbin/parted -s %s -a optimal", dest->path); |
625 | ||
626 | // Set partition type | |
627 | if (dest->part_table == HW_PART_TABLE_MSDOS) | |
628 | asprintf(&cmd, "%s mklabel msdos", cmd); | |
629 | else if (dest->part_table == HW_PART_TABLE_GPT) | |
630 | asprintf(&cmd, "%s mklabel gpt", cmd); | |
631 | ||
802a123b | 632 | unsigned long long part_start = MB2BYTES(1); |
25fcce25 | 633 | |
48d6a112 | 634 | if (*dest->part_bootldr) { |
802a123b | 635 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
48d6a112 | 636 | (dest->part_table == HW_PART_TABLE_GPT) ? "BOOTLDR" : "primary", |
802a123b | 637 | part_start, part_start + dest->size_bootldr - 1); |
48d6a112 MT |
638 | |
639 | part_start += dest->size_bootldr; | |
640 | } | |
641 | ||
25fcce25 | 642 | if (*dest->part_boot) { |
802a123b | 643 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
25fcce25 | 644 | (dest->part_table == HW_PART_TABLE_GPT) ? "BOOT" : "primary", |
802a123b | 645 | part_start, part_start + dest->size_boot - 1); |
25fcce25 MT |
646 | |
647 | part_start += dest->size_boot; | |
648 | } | |
649 | ||
650 | if (*dest->part_swap) { | |
802a123b | 651 | asprintf(&cmd, "%s mkpart %s linux-swap %lluB %lluB", cmd, |
25fcce25 | 652 | (dest->part_table == HW_PART_TABLE_GPT) ? "SWAP" : "primary", |
802a123b | 653 | part_start, part_start + dest->size_swap - 1); |
25fcce25 MT |
654 | |
655 | part_start += dest->size_swap; | |
656 | } | |
657 | ||
658 | if (*dest->part_root) { | |
802a123b | 659 | asprintf(&cmd, "%s mkpart %s ext2 %lluB %lluB", cmd, |
25fcce25 | 660 | (dest->part_table == HW_PART_TABLE_GPT) ? "ROOT" : "primary", |
802a123b | 661 | part_start, part_start + dest->size_root - 1); |
25fcce25 MT |
662 | |
663 | part_start += dest->size_root; | |
664 | } | |
665 | ||
e9cf574d | 666 | if (dest->part_boot_idx > 0) |
25fcce25 MT |
667 | asprintf(&cmd, "%s set %d boot on", cmd, dest->part_boot_idx); |
668 | ||
e9cf574d | 669 | if (dest->part_table == HW_PART_TABLE_GPT) { |
48d6a112 MT |
670 | if (*dest->part_bootldr) { |
671 | asprintf(&cmd, "%s set %d bios_grub on", cmd, dest->part_boot_idx); | |
672 | } | |
25fcce25 MT |
673 | asprintf(&cmd, "%s disk_set pmbr_boot on", cmd); |
674 | } | |
675 | ||
46b56e20 | 676 | r = mysystem(output, cmd); |
25fcce25 | 677 | |
268090a8 MT |
678 | // Wait until the system re-read the partition table |
679 | if (r == 0) { | |
680 | unsigned int counter = 10; | |
681 | ||
682 | while (counter-- > 0) { | |
683 | sleep(1); | |
684 | ||
0e491487 | 685 | if (*dest->part_bootldr && (try_open(dest->part_bootldr) != 0)) |
48d6a112 MT |
686 | continue; |
687 | ||
0e491487 | 688 | if (*dest->part_boot && (try_open(dest->part_boot) != 0)) |
268090a8 MT |
689 | continue; |
690 | ||
0e491487 | 691 | if (*dest->part_swap && (try_open(dest->part_swap) != 0)) |
268090a8 MT |
692 | continue; |
693 | ||
0e491487 | 694 | if (*dest->part_root && (try_open(dest->part_root) != 0)) |
268090a8 MT |
695 | continue; |
696 | ||
268090a8 MT |
697 | // All partitions do exist, exiting the loop. |
698 | break; | |
699 | } | |
700 | } | |
701 | ||
25fcce25 MT |
702 | if (cmd) |
703 | free(cmd); | |
704 | ||
705 | return r; | |
706 | } | |
707 | ||
46b56e20 | 708 | static int hw_format_filesystem(const char* path, int fs, const char* output) { |
25fcce25 MT |
709 | char cmd[STRING_SIZE] = "\0"; |
710 | ||
711 | // Swap | |
712 | if (fs == HW_FS_SWAP) { | |
713 | snprintf(cmd, sizeof(cmd), "/sbin/mkswap -v1 %s &>/dev/null", path); | |
714 | // ReiserFS | |
715 | } else if (fs == HW_FS_REISERFS) { | |
716 | snprintf(cmd, sizeof(cmd), "/sbin/mkreiserfs -f %s ", path); | |
717 | ||
718 | // EXT4 | |
719 | } else if (fs == HW_FS_EXT4) { | |
5208ceed | 720 | snprintf(cmd, sizeof(cmd), "/sbin/mke2fs -FF -T ext4 %s", path); |
25fcce25 MT |
721 | |
722 | // EXT4 w/o journal | |
723 | } else if (fs == HW_FS_EXT4_WO_JOURNAL) { | |
5208ceed | 724 | snprintf(cmd, sizeof(cmd), "/sbin/mke2fs -FF -T ext4 -O ^has_journal %s", path); |
70a44b52 MT |
725 | |
726 | // XFS | |
727 | } else if (fs == HW_FS_XFS) { | |
728 | snprintf(cmd, sizeof(cmd), "/sbin/mkfs.xfs -f %s", path); | |
25fcce25 MT |
729 | } |
730 | ||
731 | assert(*cmd); | |
732 | ||
46b56e20 | 733 | int r = mysystem(output, cmd); |
25fcce25 MT |
734 | |
735 | return r; | |
736 | } | |
737 | ||
46b56e20 | 738 | int hw_create_filesystems(struct hw_destination* dest, const char* output) { |
25fcce25 MT |
739 | int r; |
740 | ||
741 | // boot | |
742 | if (*dest->part_boot) { | |
46b56e20 | 743 | r = hw_format_filesystem(dest->part_boot, dest->filesystem, output); |
25fcce25 MT |
744 | if (r) |
745 | return r; | |
746 | } | |
747 | ||
748 | // swap | |
749 | if (*dest->part_swap) { | |
46b56e20 | 750 | r = hw_format_filesystem(dest->part_swap, HW_FS_SWAP, output); |
25fcce25 MT |
751 | if (r) |
752 | return r; | |
753 | } | |
754 | ||
755 | // root | |
46b56e20 | 756 | r = hw_format_filesystem(dest->part_root, dest->filesystem, output); |
25fcce25 MT |
757 | if (r) |
758 | return r; | |
759 | ||
25fcce25 MT |
760 | return 0; |
761 | } | |
762 | ||
763 | int hw_mount_filesystems(struct hw_destination* dest, const char* prefix) { | |
764 | char target[STRING_SIZE]; | |
765 | ||
766 | assert(*prefix == '/'); | |
767 | ||
768 | const char* filesystem; | |
769 | switch (dest->filesystem) { | |
770 | case HW_FS_REISERFS: | |
771 | filesystem = "reiserfs"; | |
772 | break; | |
773 | ||
774 | case HW_FS_EXT4: | |
775 | case HW_FS_EXT4_WO_JOURNAL: | |
776 | filesystem = "ext4"; | |
777 | break; | |
778 | ||
70a44b52 MT |
779 | case HW_FS_XFS: |
780 | filesystem = "xfs"; | |
781 | break; | |
782 | ||
25fcce25 MT |
783 | default: |
784 | assert(0); | |
785 | } | |
786 | ||
787 | // root | |
788 | int r = hw_mount(dest->part_root, prefix, filesystem, 0); | |
789 | if (r) | |
790 | return r; | |
791 | ||
792 | // boot | |
793 | if (*dest->part_boot) { | |
794 | snprintf(target, sizeof(target), "%s%s", prefix, HW_PATH_BOOT); | |
795 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
796 | ||
797 | r = hw_mount(dest->part_boot, target, filesystem, 0); | |
798 | if (r) { | |
799 | hw_umount_filesystems(dest, prefix); | |
800 | ||
801 | return r; | |
802 | } | |
803 | } | |
804 | ||
25fcce25 MT |
805 | // swap |
806 | if (*dest->part_swap) { | |
807 | r = swapon(dest->part_swap, 0); | |
808 | if (r) { | |
809 | hw_umount_filesystems(dest, prefix); | |
810 | ||
811 | return r; | |
812 | } | |
813 | } | |
814 | ||
815 | // bind-mount misc filesystems | |
816 | char** otherfs = other_filesystems; | |
817 | while (*otherfs) { | |
818 | snprintf(target, sizeof(target), "%s%s", prefix, *otherfs); | |
819 | ||
820 | mkdir(target, S_IRWXU|S_IRWXG|S_IRWXO); | |
821 | r = hw_mount(*otherfs, target, NULL, MS_BIND); | |
822 | if (r) { | |
823 | hw_umount_filesystems(dest, prefix); | |
824 | ||
825 | return r; | |
826 | } | |
827 | ||
828 | otherfs++; | |
829 | } | |
830 | ||
831 | return 0; | |
832 | } | |
833 | ||
834 | int hw_umount_filesystems(struct hw_destination* dest, const char* prefix) { | |
ade96ba8 MT |
835 | int r; |
836 | char target[STRING_SIZE]; | |
837 | ||
ddd32a5c MT |
838 | // Write all buffers to disk before umounting |
839 | hw_sync(); | |
840 | ||
25fcce25 MT |
841 | // boot |
842 | if (*dest->part_boot) { | |
ade96ba8 MT |
843 | snprintf(target, sizeof(target), "%s%s", prefix, HW_PATH_BOOT); |
844 | r = hw_umount(target); | |
845 | if (r) | |
846 | return -1; | |
25fcce25 MT |
847 | } |
848 | ||
25fcce25 MT |
849 | // swap |
850 | if (*dest->part_swap) { | |
851 | swapoff(dest->part_swap); | |
852 | } | |
853 | ||
854 | // misc filesystems | |
25fcce25 | 855 | char** otherfs = other_filesystems; |
25fcce25 MT |
856 | while (*otherfs) { |
857 | snprintf(target, sizeof(target), "%s%s", prefix, *otherfs++); | |
ade96ba8 MT |
858 | r = hw_umount(target); |
859 | if (r) | |
860 | return -1; | |
25fcce25 MT |
861 | } |
862 | ||
ade96ba8 MT |
863 | // root |
864 | r = hw_umount(prefix); | |
865 | if (r) | |
866 | return -1; | |
867 | ||
25fcce25 MT |
868 | return 0; |
869 | } | |
4a0d9bef | 870 | |
d78fffa0 | 871 | int hw_destroy_raid_superblocks(const struct hw_destination* dest, const char* output) { |
d2fafe03 MT |
872 | char cmd[STRING_SIZE]; |
873 | ||
46b56e20 MT |
874 | hw_stop_all_raid_arrays(output); |
875 | hw_stop_all_raid_arrays(output); | |
d2fafe03 MT |
876 | |
877 | if (dest->disk1) { | |
46b56e20 MT |
878 | snprintf(cmd, sizeof(cmd), "/sbin/mdadm --zero-superblock %s", dest->disk1->path); |
879 | mysystem(output, cmd); | |
d2fafe03 MT |
880 | } |
881 | ||
882 | if (dest->disk2) { | |
46b56e20 MT |
883 | snprintf(cmd, sizeof(cmd), "/sbin/mdadm --zero-superblock %s", dest->disk2->path); |
884 | mysystem(output, cmd); | |
d2fafe03 MT |
885 | } |
886 | ||
887 | return 0; | |
888 | } | |
889 | ||
46b56e20 | 890 | int hw_setup_raid(struct hw_destination* dest, const char* output) { |
4a0d9bef | 891 | char* cmd = NULL; |
7b4790d3 | 892 | int r; |
4a0d9bef MT |
893 | |
894 | assert(dest->is_raid); | |
895 | ||
d2fafe03 MT |
896 | // Stop all RAID arrays that might be around (again). |
897 | // It seems that there is some sort of race-condition with udev re-enabling | |
898 | // the raid arrays and therefore locking the disks. | |
46b56e20 | 899 | r = hw_destroy_raid_superblocks(dest, output); |
d2fafe03 | 900 | |
7b4790d3 MT |
901 | asprintf(&cmd, "echo \"y\" | /sbin/mdadm --create --verbose --metadata=%s --auto=mdp %s", |
902 | RAID_METADATA, dest->path); | |
4a0d9bef MT |
903 | |
904 | switch (dest->raid_level) { | |
905 | case 1: | |
906 | asprintf(&cmd, "%s --level=1 --raid-devices=2", cmd); | |
907 | break; | |
908 | ||
909 | default: | |
910 | assert(0); | |
911 | } | |
912 | ||
913 | if (dest->disk1) { | |
914 | asprintf(&cmd, "%s %s", cmd, dest->disk1->path); | |
d2f993a7 MT |
915 | |
916 | // Clear all data at the beginning | |
917 | r = hw_zero_out_device(dest->disk1->path, MB2BYTES(10)); | |
918 | if (r <= 0) | |
919 | return r; | |
4a0d9bef MT |
920 | } |
921 | ||
922 | if (dest->disk2) { | |
923 | asprintf(&cmd, "%s %s", cmd, dest->disk2->path); | |
d2f993a7 MT |
924 | |
925 | // Clear all data at the beginning | |
926 | r = hw_zero_out_device(dest->disk2->path, MB2BYTES(10)); | |
927 | if (r <= 0) | |
928 | return r; | |
4a0d9bef MT |
929 | } |
930 | ||
46b56e20 | 931 | r = mysystem(output, cmd); |
4a0d9bef MT |
932 | free(cmd); |
933 | ||
934 | // Wait a moment until the device has been properly brought up | |
935 | if (r == 0) { | |
936 | unsigned int counter = 10; | |
937 | while (counter-- > 0) { | |
938 | sleep(1); | |
939 | ||
fde37387 MT |
940 | // If the raid device has not yet been properly brought up, |
941 | // opening it will fail with the message: Device or resource busy | |
942 | // Hence we will wait a bit until it becomes usable. | |
0e491487 | 943 | if (try_open(dest->path) == 0) |
4a0d9bef MT |
944 | break; |
945 | } | |
946 | } | |
947 | ||
948 | return r; | |
949 | } | |
950 | ||
46b56e20 MT |
951 | int hw_stop_all_raid_arrays(const char* output) { |
952 | return mysystem(output, "/sbin/mdadm --stop --scan --verbose"); | |
4a0d9bef | 953 | } |
f5007e9c | 954 | |
46b56e20 | 955 | int hw_install_bootloader(struct hw_destination* dest, const char* output) { |
f5007e9c MT |
956 | char cmd[STRING_SIZE]; |
957 | int r; | |
958 | ||
959 | // Generate configuration file | |
960 | snprintf(cmd, sizeof(cmd), "/usr/sbin/grub-mkconfig -o /boot/grub/grub.cfg"); | |
46b56e20 | 961 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
962 | if (r) |
963 | return r; | |
964 | ||
965 | char cmd_grub[STRING_SIZE]; | |
966 | snprintf(cmd_grub, sizeof(cmd_grub), "/usr/sbin/grub-install --no-floppy --recheck"); | |
967 | ||
e9cf574d | 968 | if (dest->is_raid) { |
f5007e9c | 969 | snprintf(cmd, sizeof(cmd), "%s %s", cmd_grub, dest->disk1->path); |
46b56e20 | 970 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
971 | if (r) |
972 | return r; | |
973 | ||
974 | snprintf(cmd, sizeof(cmd), "%s %s", cmd_grub, dest->disk2->path); | |
46b56e20 | 975 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
976 | } else { |
977 | snprintf(cmd, sizeof(cmd), "%s %s", cmd_grub, dest->path); | |
46b56e20 | 978 | r = system_chroot(output, DESTINATION_MOUNT_PATH, cmd); |
f5007e9c MT |
979 | } |
980 | ||
ade96ba8 MT |
981 | hw_sync(); |
982 | ||
f5007e9c MT |
983 | return r; |
984 | } | |
7f69d8a4 MT |
985 | |
986 | static char* hw_get_uuid(const char* dev) { | |
987 | blkid_probe p = blkid_new_probe_from_filename(dev); | |
988 | const char* buffer = NULL; | |
989 | char* uuid = NULL; | |
990 | ||
991 | if (!p) | |
992 | return NULL; | |
993 | ||
994 | blkid_do_probe(p); | |
995 | blkid_probe_lookup_value(p, "UUID", &buffer, NULL); | |
996 | ||
997 | if (buffer) | |
998 | uuid = strdup(buffer); | |
999 | ||
1000 | blkid_free_probe(p); | |
1001 | ||
1002 | return uuid; | |
1003 | } | |
1004 | ||
335c5bd1 MT |
1005 | #define FSTAB_FMT "UUID=%s %-8s %-4s %-10s %d %d\n" |
1006 | ||
7f69d8a4 MT |
1007 | int hw_write_fstab(struct hw_destination* dest) { |
1008 | FILE* f = fopen(DESTINATION_MOUNT_PATH "/etc/fstab", "w"); | |
1009 | if (!f) | |
1010 | return -1; | |
1011 | ||
7f69d8a4 MT |
1012 | char* uuid = NULL; |
1013 | ||
1014 | // boot | |
1015 | if (*dest->part_boot) { | |
1016 | uuid = hw_get_uuid(dest->part_boot); | |
1017 | ||
1018 | if (uuid) { | |
335c5bd1 | 1019 | fprintf(f, FSTAB_FMT, uuid, "/boot", "auto", "defaults", 1, 2); |
7f69d8a4 MT |
1020 | free(uuid); |
1021 | } | |
1022 | } | |
1023 | ||
1024 | // swap | |
1025 | if (*dest->part_swap) { | |
1026 | uuid = hw_get_uuid(dest->part_swap); | |
1027 | ||
1028 | if (uuid) { | |
335c5bd1 | 1029 | fprintf(f, FSTAB_FMT, uuid, "swap", "swap", "defaults,pri=1", 0, 0); |
7f69d8a4 MT |
1030 | free(uuid); |
1031 | } | |
1032 | } | |
1033 | ||
1034 | // root | |
1035 | uuid = hw_get_uuid(dest->part_root); | |
1036 | if (uuid) { | |
335c5bd1 | 1037 | fprintf(f, FSTAB_FMT, uuid, "/", "auto", "defaults", 1, 1); |
7f69d8a4 MT |
1038 | free(uuid); |
1039 | } | |
1040 | ||
7f69d8a4 MT |
1041 | fclose(f); |
1042 | ||
1043 | return 0; | |
1044 | } | |
282ec35e MT |
1045 | |
1046 | void hw_sync() { | |
1047 | sync(); | |
1048 | sync(); | |
1049 | sync(); | |
1050 | } | |
7d114284 MT |
1051 | |
1052 | int hw_start_networking(const char* output) { | |
1053 | return mysystem(output, "/usr/bin/start-networking.sh"); | |
1054 | } | |
38c6822d MT |
1055 | |
1056 | char* hw_find_backup_file(const char* output, const char* search_path) { | |
1057 | char path[STRING_SIZE]; | |
1058 | ||
1059 | snprintf(path, sizeof(path), "%s/backup.ipf", search_path); | |
1060 | int r = access(path, R_OK); | |
1061 | ||
1062 | if (r == 0) | |
1063 | return strdup(path); | |
1064 | ||
1065 | return NULL; | |
1066 | } | |
1067 | ||
1068 | int hw_restore_backup(const char* output, const char* backup_path, const char* destination) { | |
1069 | char command[STRING_SIZE]; | |
1070 | ||
1071 | snprintf(command, sizeof(command), "/bin/tar xzpf %s -C %s", backup_path, destination); | |
1072 | int rc = mysystem(output, command); | |
1073 | ||
1074 | if (rc) | |
1075 | return -1; | |
1076 | ||
1077 | return 0; | |
1078 | } |