]>
git.ipfire.org Git - ipfire-2.x.git/blob - src/installer/hw.c
1 /*#############################################################################
3 # IPFire - An Open Source Firewall Distribution #
4 # Copyright (C) 2014 IPFire development team #
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. #
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. #
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/>. #
19 #############################################################################*/
26 #include <blkid/blkid.h>
30 #include <linux/loop.h>
35 #include <sys/ioctl.h>
36 #include <sys/mount.h>
39 #include <sys/sysinfo.h>
44 #include <libsmooth.h>
48 const char* other_filesystems
[] = {
55 static int system_chroot(const char* output
, const char* path
, const char* cmd
) {
56 char chroot_cmd
[STRING_SIZE
];
58 snprintf(chroot_cmd
, sizeof(chroot_cmd
), "/usr/sbin/chroot %s %s", path
, cmd
);
60 return mysystem(output
, chroot_cmd
);
63 struct hw
* hw_init() {
64 struct hw
* hw
= malloc(sizeof(*hw
));
68 hw
->udev
= udev_new();
70 fprintf(stderr
, "Could not create udev instance\n");
77 void hw_free(struct hw
* hw
) {
84 static int strstartswith(const char* a
, const char* b
) {
85 return (strncmp(a
, b
, strlen(b
)) == 0);
88 static char loop_device
[STRING_SIZE
];
90 static int setup_loop_device(const char* source
, const char* device
) {
91 int file_fd
= open(source
, O_RDWR
);
96 if ((device_fd
= open(device
, O_RDWR
)) < 0)
99 if (ioctl(device_fd
, LOOP_SET_FD
, file_fd
) < 0)
111 if (device_fd
>= 0) {
112 ioctl(device_fd
, LOOP_CLR_FD
, 0);
119 int hw_mount(const char* source
, const char* target
, const char* fs
, int flags
) {
120 const char* loop_device
= "/dev/loop0";
122 // Create target if it does not exist
123 if (access(target
, X_OK
) != 0)
124 mkdir(target
, S_IRWXU
|S_IRWXG
|S_IRWXO
);
129 if (S_ISREG(st
.st_mode
)) {
130 int r
= setup_loop_device(source
, loop_device
);
132 source
= loop_device
;
138 return mount(source
, target
, fs
, flags
, NULL
);
141 int hw_umount(const char* target
) {
142 int r
= umount2(target
, 0);
144 if (r
&& errno
== EBUSY
) {
145 // Give it a moment to settle
148 r
= umount2(target
, MNT_FORCE
);
154 static int hw_test_source_medium(const char* path
) {
155 int ret
= hw_mount(path
, SOURCE_MOUNT_PATH
, "iso9660", MS_RDONLY
);
157 // If the source could not be mounted we
162 // Check if the test file exists.
163 ret
= access(SOURCE_TEST_FILE
, R_OK
);
165 // Umount the test device.
166 hw_umount(SOURCE_MOUNT_PATH
);
171 char* hw_find_source_medium(struct hw
* hw
) {
174 struct udev_enumerate
* enumerate
= udev_enumerate_new(hw
->udev
);
176 udev_enumerate_add_match_subsystem(enumerate
, "block");
177 udev_enumerate_scan_devices(enumerate
);
179 struct udev_list_entry
* devices
= udev_enumerate_get_list_entry(enumerate
);
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
);
186 const char* dev_path
= udev_device_get_devnode(dev
);
188 // Skip everything what we cannot work with
189 if (strstartswith(dev_path
, "/dev/loop") || strstartswith(dev_path
, "/dev/fd") ||
190 strstartswith(dev_path
, "/dev/ram") || strstartswith(dev_path
, "/dev/md"))
193 if (hw_test_source_medium(dev_path
) == 0) {
194 ret
= strdup(dev_path
);
197 udev_device_unref(dev
);
199 // If a suitable device was found the search will end.
204 udev_enumerate_unref(enumerate
);
209 static struct hw_disk
** hw_create_disks() {
210 struct hw_disk
** ret
= malloc(sizeof(*ret
) * (HW_MAX_DISKS
+ 1));
215 static unsigned long long hw_block_device_get_size(const char* dev
) {
216 int fd
= open(dev
, O_RDONLY
);
220 unsigned long long size
= blkid_get_dev_size(fd
);
226 struct hw_disk
** hw_find_disks(struct hw
* hw
, const char* sourcedrive
) {
227 struct hw_disk
** ret
= hw_create_disks();
228 struct hw_disk
** disks
= ret
;
230 struct udev_enumerate
* enumerate
= udev_enumerate_new(hw
->udev
);
232 udev_enumerate_add_match_subsystem(enumerate
, "block");
233 udev_enumerate_scan_devices(enumerate
);
235 struct udev_list_entry
* devices
= udev_enumerate_get_list_entry(enumerate
);
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
);
243 const char* dev_path
= udev_device_get_devnode(dev
);
245 // Skip everything what we cannot work with
246 if (strstartswith(dev_path
, "/dev/loop") || strstartswith(dev_path
, "/dev/fd") ||
247 strstartswith(dev_path
, "/dev/ram") || strstartswith(dev_path
, "/dev/sr") ||
248 strstartswith(dev_path
, "/dev/md")) {
249 udev_device_unref(dev
);
253 // Skip sourcedrive if we need to
254 if (sourcedrive
&& (strcmp(dev_path
, sourcedrive
) == 0)) {
255 udev_device_unref(dev
);
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)) {
262 udev_device_unref(dev
);
266 // Skip devices with a size of zero
267 unsigned long long size
= hw_block_device_get_size(dev_path
);
269 udev_device_unref(dev
);
273 struct hw_disk
* disk
= malloc(sizeof(*disk
));
279 strncpy(disk
->path
, dev_path
, sizeof(disk
->path
));
280 const char* p
= disk
->path
+ 5;
285 const char* vendor
= udev_device_get_property_value(dev
, "ID_VENDOR");
287 vendor
= udev_device_get_sysattr_value(dev
, "vendor");
289 vendor
= udev_device_get_sysattr_value(dev
, "manufacturer");
292 strncpy(disk
->vendor
, vendor
, sizeof(disk
->vendor
));
294 *disk
->vendor
= '\0';
297 const char* model
= udev_device_get_property_value(dev
, "ID_MODEL");
299 model
= udev_device_get_sysattr_value(dev
, "model");
301 model
= udev_device_get_sysattr_value(dev
, "product");
304 strncpy(disk
->model
, model
, sizeof(disk
->model
));
308 // Format description
309 char size_str
[STRING_SIZE
];
310 snprintf(size_str
, sizeof(size_str
), "%4.1fGB", (double)disk
->size
/ pow(1024, 3));
312 if (*disk
->vendor
&& *disk
->model
) {
313 snprintf(disk
->description
, sizeof(disk
->description
),
314 "%s - %s - %s - %s", size_str
, p
, disk
->vendor
, disk
->model
);
316 } else if (*disk
->vendor
|| *disk
->model
) {
317 snprintf(disk
->description
, sizeof(disk
->description
),
318 "%s - %s - %s", size_str
, p
, (*disk
->vendor
) ? disk
->vendor
: disk
->model
);
321 snprintf(disk
->description
, sizeof(disk
->description
),
322 "%s - %s", size_str
, p
);
330 udev_device_unref(dev
);
333 udev_enumerate_unref(enumerate
);
340 void hw_free_disks(struct hw_disk
** disks
) {
341 struct hw_disk
** disk
= disks
;
343 while (*disk
!= NULL
) {
344 if (--(*disk
)->ref
== 0)
353 unsigned int hw_count_disks(const struct hw_disk
** disks
) {
354 unsigned int ret
= 0;
362 struct hw_disk
** hw_select_disks(struct hw_disk
** disks
, int* selection
) {
363 struct hw_disk
** ret
= hw_create_disks();
364 struct hw_disk
** selected_disks
= ret
;
366 unsigned int num_disks
= hw_count_disks((const struct hw_disk
**)disks
);
368 for (unsigned int i
= 0; i
< num_disks
; i
++) {
369 if (!selection
|| selection
[i
]) {
370 struct hw_disk
*selected_disk
= disks
[i
];
371 selected_disk
->ref
++;
373 *selected_disks
++ = selected_disk
;
378 *selected_disks
= NULL
;
383 struct hw_disk
** hw_select_first_disk(const struct hw_disk
** disks
) {
384 struct hw_disk
** ret
= hw_create_disks();
385 struct hw_disk
** selected_disks
= ret
;
387 unsigned int num_disks
= hw_count_disks(disks
);
388 assert(num_disks
> 0);
390 for (unsigned int i
= 0; i
< num_disks
; i
++) {
391 struct hw_disk
*disk
= disks
[i
];
394 *selected_disks
++ = disk
;
399 *selected_disks
= NULL
;
404 static unsigned long long hw_swap_size(struct hw_destination
* dest
) {
405 unsigned long long memory
= hw_memory();
407 unsigned long long swap_size
= memory
/ 4;
409 // Min. swap size is 128MB
410 if (swap_size
< MB2BYTES(128))
411 swap_size
= MB2BYTES(128);
413 // Cap swap size to 1GB
414 else if (swap_size
> MB2BYTES(1024))
415 swap_size
= MB2BYTES(1024);
420 static unsigned long long hw_root_size(struct hw_destination
* dest
) {
421 unsigned long long root_size
;
423 if (dest
->size
< MB2BYTES(2048))
424 root_size
= MB2BYTES(1024);
426 else if (dest
->size
>= MB2BYTES(2048) && dest
->size
<= MB2BYTES(3072))
427 root_size
= MB2BYTES(1536);
430 root_size
= MB2BYTES(2048);
435 static unsigned long long hw_boot_size(struct hw_destination
* dest
) {
439 static int hw_device_has_p_suffix(const struct hw_destination
* dest
) {
440 // All RAID devices have the p suffix.
444 // Devices with a number at the end have the p suffix, too.
445 // e.g. mmcblk0, cciss0
446 unsigned int last_char
= strlen(dest
->path
) - 1;
447 if ((dest
->path
[last_char
] >= '0') && (dest
->path
[last_char
] <= '9'))
453 static int hw_calculate_partition_table(struct hw_destination
* dest
, int disable_swap
) {
457 snprintf(path
, sizeof(path
), "%s%s", dest
->path
,
458 hw_device_has_p_suffix(dest
) ? "p" : "");
459 dest
->part_boot_idx
= 0;
461 // Determine the size of the target block device
463 dest
->size
= (dest
->disk1
->size
>= dest
->disk2
->size
) ?
464 dest
->disk2
->size
: dest
->disk1
->size
;
466 // The RAID will install some metadata at the end of the disk
467 // and we will save up some space for that.
468 dest
->size
-= MB2BYTES(2);
470 dest
->size
= dest
->disk1
->size
;
473 // As we add some extra space before the beginning of the first
474 // partition, we need to substract that here.
475 dest
->size
-= MB2BYTES(1);
477 // Add some more space for partition tables, etc.
478 dest
->size
-= MB2BYTES(1);
480 // Determine partition table
481 dest
->part_table
= HW_PART_TABLE_MSDOS
;
483 // Disks over 2TB need to use GPT
484 if (dest
->size
>= MB2BYTES(2047 * 1024))
485 dest
->part_table
= HW_PART_TABLE_GPT
;
487 // We also use GPT on raid disks by default
488 else if (dest
->is_raid
)
489 dest
->part_table
= HW_PART_TABLE_GPT
;
491 // When using GPT, GRUB2 needs a little bit of space to put
493 if (dest
->part_table
== HW_PART_TABLE_GPT
) {
494 snprintf(dest
->part_bootldr
, sizeof(dest
->part_bootldr
),
495 "%s%d", path
, part_idx
);
497 dest
->size_bootldr
= MB2BYTES(4);
499 dest
->part_boot_idx
= part_idx
++;
501 *dest
->part_bootldr
= '\0';
502 dest
->size_bootldr
= 0;
505 dest
->size_boot
= hw_boot_size(dest
);
506 dest
->size_root
= hw_root_size(dest
);
508 // Should we use swap?
512 dest
->size_swap
= hw_swap_size(dest
);
514 // Determine the size of the data partition.
515 unsigned long long used_space
= dest
->size_bootldr
+ dest
->size_boot
516 + dest
->size_swap
+ dest
->size_root
;
518 // Disk is way too small
519 if (used_space
>= dest
->size
)
522 dest
->size_data
= dest
->size
- used_space
;
524 // If it gets too small, we remove the swap space.
525 if (dest
->size_data
<= MB2BYTES(256)) {
526 dest
->size_data
+= dest
->size_swap
;
530 // Set partition names
531 if (dest
->size_boot
> 0) {
532 if (dest
->part_boot_idx
== 0)
533 dest
->part_boot_idx
= part_idx
;
535 snprintf(dest
->part_boot
, sizeof(dest
->part_boot
), "%s%d", path
, part_idx
++);
537 *dest
->part_boot
= '\0';
539 if (dest
->size_swap
> 0)
540 snprintf(dest
->part_swap
, sizeof(dest
->part_swap
), "%s%d", path
, part_idx
++);
542 *dest
->part_swap
= '\0';
544 // There is always a root partition
545 if (dest
->part_boot_idx
== 0)
546 dest
->part_boot_idx
= part_idx
;
548 snprintf(dest
->part_root
, sizeof(dest
->part_root
), "%s%d", path
, part_idx
++);
550 if (dest
->size_data
> 0)
551 snprintf(dest
->part_data
, sizeof(dest
->part_data
), "%s%d", path
, part_idx
++);
553 *dest
->part_data
= '\0';
558 struct hw_destination
* hw_make_destination(int part_type
, struct hw_disk
** disks
, int disable_swap
) {
559 struct hw_destination
* dest
= malloc(sizeof(*dest
));
561 if (part_type
== HW_PART_TYPE_NORMAL
) {
562 dest
->disk1
= *disks
;
565 strncpy(dest
->path
, dest
->disk1
->path
, sizeof(dest
->path
));
567 } else if (part_type
== HW_PART_TYPE_RAID1
) {
568 dest
->disk1
= *disks
++;
569 dest
->disk2
= *disks
;
570 dest
->raid_level
= 1;
572 snprintf(dest
->path
, sizeof(dest
->path
), "/dev/md0");
575 // Is this a RAID device?
576 dest
->is_raid
= (part_type
> HW_PART_TYPE_NORMAL
);
578 int r
= hw_calculate_partition_table(dest
, disable_swap
);
582 // Set default filesystem
583 dest
->filesystem
= HW_FS_DEFAULT
;
588 unsigned long long hw_memory() {
591 int r
= sysinfo(&si
);
598 static int hw_zero_out_device(const char* path
, int bytes
) {
600 memset(block
, 0, sizeof(block
));
602 int blocks
= bytes
/ sizeof(block
);
604 int fd
= open(path
, O_WRONLY
);
608 unsigned int bytes_written
= 0;
609 while (blocks
-- > 0) {
610 bytes_written
+= write(fd
, block
, sizeof(block
));
616 return bytes_written
;
619 static int try_open(const char* path
) {
620 FILE* f
= fopen(path
, "r");
629 int hw_create_partitions(struct hw_destination
* dest
, const char* output
) {
630 // Before we write a new partition table to the disk, we will erase
631 // the first couple of megabytes at the beginning of the device to
632 // get rid of all left other things like bootloaders and partition tables.
633 // This solves some problems when changing from MBR to GPT partitions or
634 // the other way around.
635 int r
= hw_zero_out_device(dest
->path
, MB2BYTES(10));
640 asprintf(&cmd
, "/usr/sbin/parted -s %s -a optimal", dest
->path
);
642 // Set partition type
643 if (dest
->part_table
== HW_PART_TABLE_MSDOS
)
644 asprintf(&cmd
, "%s mklabel msdos", cmd
);
645 else if (dest
->part_table
== HW_PART_TABLE_GPT
)
646 asprintf(&cmd
, "%s mklabel gpt", cmd
);
648 unsigned long long part_start
= MB2BYTES(1);
650 if (*dest
->part_bootldr
) {
651 asprintf(&cmd
, "%s mkpart %s ext2 %lluB %lluB", cmd
,
652 (dest
->part_table
== HW_PART_TABLE_GPT
) ? "BOOTLDR" : "primary",
653 part_start
, part_start
+ dest
->size_bootldr
- 1);
655 part_start
+= dest
->size_bootldr
;
658 if (*dest
->part_boot
) {
659 asprintf(&cmd
, "%s mkpart %s ext2 %lluB %lluB", cmd
,
660 (dest
->part_table
== HW_PART_TABLE_GPT
) ? "BOOT" : "primary",
661 part_start
, part_start
+ dest
->size_boot
- 1);
663 part_start
+= dest
->size_boot
;
666 if (*dest
->part_swap
) {
667 asprintf(&cmd
, "%s mkpart %s linux-swap %lluB %lluB", cmd
,
668 (dest
->part_table
== HW_PART_TABLE_GPT
) ? "SWAP" : "primary",
669 part_start
, part_start
+ dest
->size_swap
- 1);
671 part_start
+= dest
->size_swap
;
674 if (*dest
->part_root
) {
675 asprintf(&cmd
, "%s mkpart %s ext2 %lluB %lluB", cmd
,
676 (dest
->part_table
== HW_PART_TABLE_GPT
) ? "ROOT" : "primary",
677 part_start
, part_start
+ dest
->size_root
- 1);
679 part_start
+= dest
->size_root
;
682 if (*dest
->part_data
) {
683 asprintf(&cmd
, "%s mkpart %s ext2 %lluB %lluB", cmd
,
684 (dest
->part_table
== HW_PART_TABLE_GPT
) ? "DATA" : "primary",
685 part_start
, part_start
+ dest
->size_data
- 1);
687 part_start
+= dest
->size_data
;
690 if (dest
->part_boot_idx
> 0)
691 asprintf(&cmd
, "%s set %d boot on", cmd
, dest
->part_boot_idx
);
693 if (dest
->part_table
== HW_PART_TABLE_GPT
) {
694 if (*dest
->part_bootldr
) {
695 asprintf(&cmd
, "%s set %d bios_grub on", cmd
, dest
->part_boot_idx
);
697 asprintf(&cmd
, "%s disk_set pmbr_boot on", cmd
);
700 r
= mysystem(output
, cmd
);
702 // Wait until the system re-read the partition table
704 unsigned int counter
= 10;
706 while (counter
-- > 0) {
709 if (*dest
->part_bootldr
&& (try_open(dest
->part_bootldr
) != 0))
712 if (*dest
->part_boot
&& (try_open(dest
->part_boot
) != 0))
715 if (*dest
->part_swap
&& (try_open(dest
->part_swap
) != 0))
718 if (*dest
->part_root
&& (try_open(dest
->part_root
) != 0))
721 if (*dest
->part_data
&& (try_open(dest
->part_data
) != 0))
724 // All partitions do exist, exiting the loop.
735 static int hw_format_filesystem(const char* path
, int fs
, const char* output
) {
736 char cmd
[STRING_SIZE
] = "\0";
739 if (fs
== HW_FS_SWAP
) {
740 snprintf(cmd
, sizeof(cmd
), "/sbin/mkswap -v1 %s &>/dev/null", path
);
742 } else if (fs
== HW_FS_REISERFS
) {
743 snprintf(cmd
, sizeof(cmd
), "/sbin/mkreiserfs -f %s ", path
);
746 } else if (fs
== HW_FS_EXT4
) {
747 snprintf(cmd
, sizeof(cmd
), "/sbin/mke2fs -T ext4 %s", path
);
750 } else if (fs
== HW_FS_EXT4_WO_JOURNAL
) {
751 snprintf(cmd
, sizeof(cmd
), "/sbin/mke2fs -T ext4 -O ^has_journal %s", path
);
754 } else if (fs
== HW_FS_XFS
) {
755 snprintf(cmd
, sizeof(cmd
), "/sbin/mkfs.xfs -f %s", path
);
760 int r
= mysystem(output
, cmd
);
765 int hw_create_filesystems(struct hw_destination
* dest
, const char* output
) {
769 if (*dest
->part_boot
) {
770 r
= hw_format_filesystem(dest
->part_boot
, dest
->filesystem
, output
);
776 if (*dest
->part_swap
) {
777 r
= hw_format_filesystem(dest
->part_swap
, HW_FS_SWAP
, output
);
783 r
= hw_format_filesystem(dest
->part_root
, dest
->filesystem
, output
);
788 if (*dest
->part_data
) {
789 r
= hw_format_filesystem(dest
->part_data
, dest
->filesystem
, output
);
797 int hw_mount_filesystems(struct hw_destination
* dest
, const char* prefix
) {
798 char target
[STRING_SIZE
];
800 assert(*prefix
== '/');
802 const char* filesystem
;
803 switch (dest
->filesystem
) {
805 filesystem
= "reiserfs";
809 case HW_FS_EXT4_WO_JOURNAL
:
822 int r
= hw_mount(dest
->part_root
, prefix
, filesystem
, 0);
827 if (*dest
->part_boot
) {
828 snprintf(target
, sizeof(target
), "%s%s", prefix
, HW_PATH_BOOT
);
829 mkdir(target
, S_IRWXU
|S_IRWXG
|S_IRWXO
);
831 r
= hw_mount(dest
->part_boot
, target
, filesystem
, 0);
833 hw_umount_filesystems(dest
, prefix
);
840 if (*dest
->part_data
) {
841 snprintf(target
, sizeof(target
), "%s%s", prefix
, HW_PATH_DATA
);
842 mkdir(target
, S_IRWXU
|S_IRWXG
|S_IRWXO
);
844 r
= hw_mount(dest
->part_data
, target
, filesystem
, 0);
846 hw_umount_filesystems(dest
, prefix
);
853 if (*dest
->part_swap
) {
854 r
= swapon(dest
->part_swap
, 0);
856 hw_umount_filesystems(dest
, prefix
);
862 // bind-mount misc filesystems
863 char** otherfs
= other_filesystems
;
865 snprintf(target
, sizeof(target
), "%s%s", prefix
, *otherfs
);
867 mkdir(target
, S_IRWXU
|S_IRWXG
|S_IRWXO
);
868 r
= hw_mount(*otherfs
, target
, NULL
, MS_BIND
);
870 hw_umount_filesystems(dest
, prefix
);
881 int hw_umount_filesystems(struct hw_destination
* dest
, const char* prefix
) {
883 char target
[STRING_SIZE
];
885 // Write all buffers to disk before umounting
889 if (*dest
->part_boot
) {
890 snprintf(target
, sizeof(target
), "%s%s", prefix
, HW_PATH_BOOT
);
891 r
= hw_umount(target
);
897 if (*dest
->part_data
) {
898 snprintf(target
, sizeof(target
), "%s%s", prefix
, HW_PATH_DATA
);
899 r
= hw_umount(target
);
905 if (*dest
->part_swap
) {
906 swapoff(dest
->part_swap
);
910 char** otherfs
= other_filesystems
;
912 snprintf(target
, sizeof(target
), "%s%s", prefix
, *otherfs
++);
913 r
= hw_umount(target
);
919 r
= hw_umount(prefix
);
926 int hw_destroy_raid_superblocks(const struct hw_destination
* dest
, const char* output
) {
927 char cmd
[STRING_SIZE
];
929 hw_stop_all_raid_arrays(output
);
930 hw_stop_all_raid_arrays(output
);
933 snprintf(cmd
, sizeof(cmd
), "/sbin/mdadm --zero-superblock %s", dest
->disk1
->path
);
934 mysystem(output
, cmd
);
938 snprintf(cmd
, sizeof(cmd
), "/sbin/mdadm --zero-superblock %s", dest
->disk2
->path
);
939 mysystem(output
, cmd
);
945 int hw_setup_raid(struct hw_destination
* dest
, const char* output
) {
949 assert(dest
->is_raid
);
951 // Stop all RAID arrays that might be around (again).
952 // It seems that there is some sort of race-condition with udev re-enabling
953 // the raid arrays and therefore locking the disks.
954 r
= hw_destroy_raid_superblocks(dest
, output
);
956 asprintf(&cmd
, "echo \"y\" | /sbin/mdadm --create --verbose --metadata=%s --auto=mdp %s",
957 RAID_METADATA
, dest
->path
);
959 switch (dest
->raid_level
) {
961 asprintf(&cmd
, "%s --level=1 --raid-devices=2", cmd
);
969 asprintf(&cmd
, "%s %s", cmd
, dest
->disk1
->path
);
971 // Clear all data at the beginning
972 r
= hw_zero_out_device(dest
->disk1
->path
, MB2BYTES(10));
978 asprintf(&cmd
, "%s %s", cmd
, dest
->disk2
->path
);
980 // Clear all data at the beginning
981 r
= hw_zero_out_device(dest
->disk2
->path
, MB2BYTES(10));
986 r
= mysystem(output
, cmd
);
989 // Wait a moment until the device has been properly brought up
991 unsigned int counter
= 10;
992 while (counter
-- > 0) {
995 // If the raid device has not yet been properly brought up,
996 // opening it will fail with the message: Device or resource busy
997 // Hence we will wait a bit until it becomes usable.
998 if (try_open(dest
->path
) == 0)
1006 int hw_stop_all_raid_arrays(const char* output
) {
1007 return mysystem(output
, "/sbin/mdadm --stop --scan --verbose");
1010 int hw_install_bootloader(struct hw_destination
* dest
, const char* output
) {
1011 char cmd
[STRING_SIZE
];
1014 // Generate configuration file
1015 snprintf(cmd
, sizeof(cmd
), "/usr/sbin/grub-mkconfig -o /boot/grub/grub.cfg");
1016 r
= system_chroot(output
, DESTINATION_MOUNT_PATH
, cmd
);
1020 char cmd_grub
[STRING_SIZE
];
1021 snprintf(cmd_grub
, sizeof(cmd_grub
), "/usr/sbin/grub-install --no-floppy --recheck");
1023 if (dest
->is_raid
) {
1024 snprintf(cmd
, sizeof(cmd
), "%s %s", cmd_grub
, dest
->disk1
->path
);
1025 r
= system_chroot(output
, DESTINATION_MOUNT_PATH
, cmd
);
1029 snprintf(cmd
, sizeof(cmd
), "%s %s", cmd_grub
, dest
->disk2
->path
);
1030 r
= system_chroot(output
, DESTINATION_MOUNT_PATH
, cmd
);
1032 snprintf(cmd
, sizeof(cmd
), "%s %s", cmd_grub
, dest
->path
);
1033 r
= system_chroot(output
, DESTINATION_MOUNT_PATH
, cmd
);
1041 static char* hw_get_uuid(const char* dev
) {
1042 blkid_probe p
= blkid_new_probe_from_filename(dev
);
1043 const char* buffer
= NULL
;
1050 blkid_probe_lookup_value(p
, "UUID", &buffer
, NULL
);
1053 uuid
= strdup(buffer
);
1055 blkid_free_probe(p
);
1060 #define FSTAB_FMT "UUID=%s %-8s %-4s %-10s %d %d\n"
1062 int hw_write_fstab(struct hw_destination
* dest
) {
1063 FILE* f
= fopen(DESTINATION_MOUNT_PATH
"/etc/fstab", "w");
1070 if (*dest
->part_boot
) {
1071 uuid
= hw_get_uuid(dest
->part_boot
);
1074 fprintf(f
, FSTAB_FMT
, uuid
, "/boot", "auto", "defaults", 1, 2);
1080 if (*dest
->part_swap
) {
1081 uuid
= hw_get_uuid(dest
->part_swap
);
1084 fprintf(f
, FSTAB_FMT
, uuid
, "swap", "swap", "defaults,pri=1", 0, 0);
1090 uuid
= hw_get_uuid(dest
->part_root
);
1092 fprintf(f
, FSTAB_FMT
, uuid
, "/", "auto", "defaults", 1, 1);
1097 if (*dest
->part_data
) {
1098 uuid
= hw_get_uuid(dest
->part_data
);
1101 fprintf(f
, FSTAB_FMT
, uuid
, "/var", "auto", "defaults", 1, 1);
1117 int hw_start_networking(const char* output
) {
1118 return mysystem(output
, "/usr/bin/start-networking.sh");
1121 char* hw_find_backup_file(const char* output
, const char* search_path
) {
1122 char path
[STRING_SIZE
];
1124 snprintf(path
, sizeof(path
), "%s/backup.ipf", search_path
);
1125 int r
= access(path
, R_OK
);
1128 return strdup(path
);
1133 int hw_restore_backup(const char* output
, const char* backup_path
, const char* destination
) {
1134 char command
[STRING_SIZE
];
1136 snprintf(command
, sizeof(command
), "/bin/tar xzpf %s -C %s", backup_path
, destination
);
1137 int rc
= mysystem(output
, command
);