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36 * Disk utility functions for installer.
37 * $Id: diskutil.c,v 1.44 2005/02/07 06:41:42 cpressey Exp $
45 #include "libaura/mem.h"
46 #include "libaura/fspred.h"
47 #include "libaura/popen.h"
49 #include "libdfui/dfui.h"
50 #include "libdfui/dump.h"
52 #define NEEDS_DISKUTIL_STRUCTURE_DEFINITIONS
54 #undef NEEDS_DISKUTIL_STRUCTURE_DEFINITIONS
57 #include "functions.h"
61 static int disk_description_is_better(const char *, const char *);
63 /** STORAGE DESCRIPTORS **/
70 AURA_MALLOC(s, storage);
74 s->selected_disk = NULL;
75 s->selected_slice = NULL;
82 storage_get_tmpfs_status(const char *mountpoint, struct storage *s)
84 struct subpartition *sp;
86 for (sp = slice_subpartition_first(s->selected_slice);
87 sp != NULL; sp = subpartition_next(sp)) {
88 if(strcmp(subpartition_get_mountpoint(sp), mountpoint) == 0) {
89 if(subpartition_is_tmpfsbacked(sp) == 1) {
100 storage_free(struct storage *s)
103 AURA_FREE(s, storage);
107 storage_set_memsize(struct storage *s, unsigned long memsize)
113 storage_get_memsize(const struct storage *s)
119 storage_disk_first(const struct storage *s)
121 return(s->disk_head);
125 storage_set_selected_disk(struct storage *s, struct disk *d)
127 s->selected_disk = d;
131 storage_get_selected_disk(const struct storage *s)
133 return(s->selected_disk);
137 storage_set_selected_slice(struct storage *s, struct slice *sl)
139 s->selected_slice = sl;
143 storage_get_selected_slice(const struct storage *s)
145 return(s->selected_slice);
149 * Create a new disk description structure.
152 disk_new(struct storage *s, const char *dev_name)
156 AURA_MALLOC(d, disk);
158 d->device = aura_strdup(dev_name);
164 d->cylinders = -1; /* -1 indicates "we don't know" */
168 d->slice_head = NULL;
169 d->slice_tail = NULL;
172 if (s->disk_head == NULL)
175 s->disk_tail->next = d;
177 d->prev = s->disk_tail;
184 disk_description_is_better(const char *existing, const char *new_desc __unused)
186 if (existing == NULL)
192 disk_get_desc(const struct disk *d)
198 disk_set_desc(struct disk *d, const char *desc)
202 if (!disk_description_is_better(d->desc, desc))
206 d->desc = aura_strdup(desc);
209 * Get the disk's total capacity.
210 * XXX we should do this with C/H/S ?
213 while (*c != ':' && *c != '\0')
218 d->capacity = atoi(c + 1);
222 * Returns the name of the device node used to represent the disk.
223 * Note that the storage used for the returned string is static,
224 * and the string is overwritten each time this function is called.
227 disk_get_device_name(const struct disk *d)
229 static char tmp_dev_name[256];
231 snprintf(tmp_dev_name, 256, "%s", d->device);
232 return(tmp_dev_name);
236 disk_get_serno(const struct disk *d)
242 disk_set_serno(struct disk *d, const char *serno)
244 d->serno = aura_strdup(serno);
248 disk_get_number(const struct disk *d)
254 disk_set_number(struct disk *d, const int number)
260 * Find the first disk description structure in the given
261 * storage description which matches the given device name
262 * prefix. Note that this means that if a storage
263 * description s contains disks named "ad0" and "ad1",
264 * disk_find(s, "ad0s1c") will return a pointer to the disk
265 * structure for "ad0".
268 disk_find(const struct storage *s, const char *device)
270 struct disk *d = s->disk_head;
273 if (strncmp(device, d->device, strlen(d->device)) == 0 &&
274 strlen(device) == strlen(d->device))
283 disk_next(const struct disk *d)
289 disk_slice_first(const struct disk *d)
291 return(d->slice_head);
295 disk_set_formatted(struct disk *d, int formatted)
297 d->we_formatted = formatted;
301 disk_get_formatted(const struct disk *d)
303 return(d->we_formatted);
307 disk_set_geometry(struct disk *d, int cyl, int hd, int sec)
315 disk_get_geometry(const struct disk *d, int *cyl, int *hd, int *sec)
323 * Free the memory allocated to hold the set of disk descriptions.
326 disks_free(struct storage *s)
328 struct disk *d = s->disk_head, *next;
332 slices_free(d->slice_head);
344 * Create a new slice description and add it to a disk description.
347 slice_new(struct disk *d, int number, int type, int flags,
348 unsigned long start, unsigned long size)
351 const char *sysid_desc = NULL;
355 dfui_debug("** adding slice %d (start %ld, size %ld, sysid %d) "
356 "to disk %s\n", number, start, size, type, d->device);
358 AURA_MALLOC(s, slice);
362 s->subpartition_head = NULL;
363 s->subpartition_tail = NULL;
372 if (part_types[i].type == type) {
373 sysid_desc = part_types[i].name;
376 if (part_types[i].type == 255)
379 if (sysid_desc == NULL) {
380 snprintf(unknown, 256, "??? Unknown, sysid = %d", type);
381 sysid_desc = unknown;
384 asprintf(&s->desc, "%ldM - %ldM: %s",
385 start / 2048, (start + size) / 2048, sysid_desc);
386 s->capacity = size / 2048;
389 if (d->slice_head == NULL)
392 d->slice_tail->next = s;
394 s->prev = d->slice_tail;
401 * Find a slice description on a given disk description given the
405 slice_find(const struct disk *d, int number)
407 struct slice *s = d->slice_head;
410 if (s->number == number)
419 slice_next(const struct slice *s)
425 * Returns the name of the device node used to represent the slice.
426 * Note that the storage used for the returned string is static,
427 * and the string is overwritten each time this function is called.
430 slice_get_device_name(const struct slice *s)
432 static char tmp_dev_name[256];
434 snprintf(tmp_dev_name, 256, "%ss%d", s->parent->device, s->number);
435 return(tmp_dev_name);
439 slice_get_number(const struct slice *s)
445 slice_get_desc(const struct slice *s)
451 slice_get_capacity(const struct slice *s)
457 slice_get_start(const struct slice *s)
463 slice_get_size(const struct slice *s)
469 slice_get_type(const struct slice *s)
475 slice_get_flags(const struct slice *s)
480 struct subpartition *
481 slice_subpartition_first(const struct slice *s)
483 return(s->subpartition_head);
487 * Free all memory for a list of slice descriptions.
490 slices_free(struct slice *head)
494 while (head != NULL) {
496 subpartitions_free(head);
498 AURA_FREE(head, slice);
503 struct subpartition *
504 subpartition_new_hammer(struct slice *s, const char *mountpoint, long capacity,
507 struct subpartition *sp;
508 struct subpartition *last = s->subpartition_tail;
510 AURA_MALLOC(sp, subpartition);
516 } else if (last->letter == 'b') {
519 sp->letter = (char)(last->letter + 1);
521 if (sp->letter == 'b' && strcmp(mountpoint, "swap") != 0)
524 sp->mountpoint = aura_strdup(mountpoint);
525 sp->capacity = capacity;
526 sp->encrypted = encrypted;
527 sp->type = FS_HAMMER;
530 * We need this here, because a UFS /boot needs valid values
532 if (sp->capacity < 1024)
537 if (sp->capacity < 1024)
546 if (strcasecmp(mountpoint, "swap") == 0)
549 if (strcmp(mountpoint, "/") != 0 && strcmp(mountpoint, "/boot") != 0 &&
550 strcmp(mountpoint, "swap") != 0)
555 if (s->subpartition_head == NULL)
556 s->subpartition_head = sp;
558 s->subpartition_tail->next = sp;
560 sp->prev = s->subpartition_tail;
561 s->subpartition_tail = sp;
567 * NOTE: arguments to this function are not checked for sanity.
569 * fsize and/or bsize may both be -1, indicating
570 * "choose a reasonable default."
572 struct subpartition *
573 subpartition_new_ufs(struct slice *s, const char *mountpoint, long capacity,
574 int encrypted, int softupdates, long fsize, long bsize, int tmpfsbacked)
576 struct subpartition *sp;
577 struct subpartition *last = s->subpartition_tail;
579 AURA_MALLOC(sp, subpartition);
584 while (last && last->letter == '@')
588 } else if (last->letter == 'b') {
591 sp->letter = (char)(last->letter + 1);
593 if (sp->letter == 'b' && strcmp(mountpoint, "swap") != 0)
599 sp->mountpoint = aura_strdup(mountpoint);
600 sp->capacity = capacity;
601 sp->encrypted = encrypted;
605 if (sp->capacity < 1024)
614 if (sp->capacity < 1024)
622 if (softupdates == -1) {
623 if (strcmp(mountpoint, "/") == 0)
628 sp->softupdates = softupdates;
631 sp->tmpfsbacked = tmpfsbacked;
634 if (strcasecmp(mountpoint, "swap") == 0)
641 if (s->subpartition_head == NULL)
642 s->subpartition_head = sp;
644 s->subpartition_tail->next = sp;
646 sp->prev = s->subpartition_tail;
647 s->subpartition_tail = sp;
651 for (sptmp = s->subpartition_head; sptmp != NULL;
652 sptmp = sptmp->next) {
653 if (sptmp->tmpfsbacked)
655 else if (strcmp(sptmp->mountpoint, "/") == 0 ||
656 strcmp(sptmp->mountpoint, "/dummy") == 0)
658 else if (strcasecmp(sptmp->mountpoint, "swap") == 0)
661 sptmp->letter = letter++;
669 * Find the subpartition description in the given storage
670 * description whose mountpoint matches the given string exactly.
672 struct subpartition *
673 subpartition_find(const struct slice *s, const char *fmt, ...)
675 struct subpartition *sp = s->subpartition_head;
680 vasprintf(&mountpoint, fmt, args);
684 if (strcmp(mountpoint, sp->mountpoint) == 0) {
696 * Find the subpartition description in the given storage
697 * description where the given filename would presumably
698 * reside. This is the subpartition whose mountpoint is
699 * the longest match for the given filename.
701 struct subpartition *
702 subpartition_of(const struct slice *s, const char *fmt, ...)
704 struct subpartition *sp = s->subpartition_head;
705 struct subpartition *csp = NULL;
711 vasprintf(&filename, fmt, args);
715 if (strlen(sp->mountpoint) > len &&
716 strlen(sp->mountpoint) <= strlen(filename) &&
717 strncmp(filename, sp->mountpoint, strlen(sp->mountpoint)) == 0) {
719 len = strlen(csp->mountpoint);
728 struct subpartition *
729 subpartition_find_capacity(const struct slice *s, long capacity)
731 struct subpartition *sp = s->subpartition_head;
734 if (sp->capacity == capacity)
742 struct subpartition *
743 subpartition_next(const struct subpartition *sp)
749 subpartition_get_pfs(const struct subpartition *sp)
755 * Returns the name of the device node used to represent
756 * the subpartition, either by serial number or traditional style.
757 * Note that the storage used for the returned string is static,
758 * and the string is overwritten each time this function is called.
761 subpartition_get_device_name(const struct subpartition *sp)
763 static char tmp_dev_name[256];
765 if (sp->parent->parent->serno != NULL)
766 snprintf(tmp_dev_name, 256, "serno/%s.s%d%c",
767 sp->parent->parent->serno, sp->parent->number, sp->letter);
769 snprintf(tmp_dev_name, 256, "%ss%d%c",
770 sp->parent->parent->device, sp->parent->number, sp->letter);
771 return(tmp_dev_name);
775 subpartition_get_mountpoint(const struct subpartition *sp)
777 return(sp->mountpoint);
781 subpartition_get_letter(const struct subpartition *sp)
787 subpartition_get_fsize(const struct subpartition *sp)
793 subpartition_get_bsize(const struct subpartition *sp)
799 subpartition_get_capacity(const struct subpartition *sp)
801 return(sp->capacity);
805 subpartition_clr_encrypted(struct subpartition *sp)
811 subpartition_is_encrypted(const struct subpartition *sp)
813 return(sp->encrypted);
817 subpartition_is_swap(const struct subpartition *sp)
823 subpartition_is_softupdated(const struct subpartition *sp)
825 return(sp->softupdates);
828 subpartition_is_tmpfsbacked(const struct subpartition *sp)
830 return(sp->tmpfsbacked);
834 subpartition_count(const struct slice *s)
836 struct subpartition *sp = s->subpartition_head;
848 subpartitions_free(struct slice *s)
850 struct subpartition *sp = s->subpartition_head, *next;
854 free(sp->mountpoint);
855 AURA_FREE(sp, subpartition);
859 s->subpartition_head = NULL;
860 s->subpartition_tail = NULL;
864 measure_activated_swap(const struct i_fn_args *a)
871 if ((p = aura_popen("%s%s -k", "r", a->os_root, cmd_name(a, "SWAPINFO"))) == NULL)
873 while (fgets(line, 255, p) != NULL) {
874 if ((word = strtok(line, " \t")) == NULL)
876 if (strcmp(word, "Device") == 0)
878 if ((word = strtok(NULL, " \t")) == NULL)
888 measure_activated_swap_from_slice(const struct i_fn_args *a,
889 const struct disk *d, const struct slice *s)
896 if ((p = aura_popen("%s%s -k", "r", a->os_root, cmd_name(a, "SWAPINFO"))) == NULL)
899 asprintf(&dev, "/dev/%ss%d", d->device, s->number);
901 while (fgets(line, 255, p) != NULL) {
902 if ((word = strtok(line, " \t")) == NULL)
904 if (strcmp(word, "Device") == 0)
906 if (strstr(word, dev) != word)
908 if ((word = strtok(NULL, " \t")) == NULL)
919 measure_activated_swap_from_disk(const struct i_fn_args *a,
920 const struct disk *d)
925 for (s = d->slice_head; s != NULL; s = s->next)
926 swap += measure_activated_swap_from_slice(a, d, s);
932 swapoff_all(const struct i_fn_args *a)
936 if ((p = aura_popen("%s%s off; %s%s | %s%s \"^/dev\" | %s%s '{print $1;}' | %s%s %s%s", "r",
937 a->os_root, cmd_name(a, "DUMPON"),
938 a->os_root, cmd_name(a, "SWAPINFO"),
939 a->os_root, cmd_name(a, "GREP"),
940 a->os_root, cmd_name(a, "AWK"),
941 a->os_root, cmd_name(a, "XARGS"),
942 a->os_root, cmd_name(a, "SWAPOFF"))) != NULL)
949 remove_all_mappings(const struct i_fn_args *a)
953 if ((p = aura_popen("%s%s -1 /dev/mapper | %s%s -vw control | %s%s -n 1 %s%s luksClose", "r",
954 a->os_root, cmd_name(a, "LS"),
955 a->os_root, cmd_name(a, "GREP"),
956 a->os_root, cmd_name(a, "XARGS"),
957 a->os_root, cmd_name(a, "CRYPTSETUP"))) != NULL)