Lines Matching +full:p +full:- +full:state
1 // SPDX-License-Identifier: GPL-2.0
6 * Copyright (C) 1991-1998 Linus Torvalds
9 * in the early extended-partition checks and added DM partitions
16 * More flexible handling of extended partitions - aeb, 950831
20 * Re-organised Feb 1998 Russell King
41 static inline sector_t nr_sects(struct msdos_partition *p) in nr_sects() argument
43 return (sector_t)get_unaligned_le32(&p->nr_sects); in nr_sects()
46 static inline sector_t start_sect(struct msdos_partition *p) in start_sect() argument
48 return (sector_t)get_unaligned_le32(&p->start_sect); in start_sect()
51 static inline int is_extended_partition(struct msdos_partition *p) in is_extended_partition() argument
53 return (p->sys_ind == DOS_EXTENDED_PARTITION || in is_extended_partition()
54 p->sys_ind == WIN98_EXTENDED_PARTITION || in is_extended_partition()
55 p->sys_ind == LINUX_EXTENDED_PARTITION); in is_extended_partition()
62 msdos_magic_present(unsigned char *p) in msdos_magic_present() argument
64 return (p[0] == MSDOS_LABEL_MAGIC1 && p[1] == MSDOS_LABEL_MAGIC2); in msdos_magic_present()
72 static int aix_magic_present(struct parsed_partitions *state, unsigned char *p) in aix_magic_present() argument
74 struct msdos_partition *pt = (struct msdos_partition *) (p + 0x1be); in aix_magic_present()
79 if (!(p[0] == AIX_LABEL_MAGIC1 && in aix_magic_present()
80 p[1] == AIX_LABEL_MAGIC2 && in aix_magic_present()
81 p[2] == AIX_LABEL_MAGIC3 && in aix_magic_present()
82 p[3] == AIX_LABEL_MAGIC4)) in aix_magic_present()
92 if (pt->sys_ind == SOLARIS_X86_PARTITION || in aix_magic_present()
93 pt->sys_ind == LINUX_RAID_PARTITION || in aix_magic_present()
94 pt->sys_ind == LINUX_DATA_PARTITION || in aix_magic_present()
95 pt->sys_ind == LINUX_LVM_PARTITION || in aix_magic_present()
99 d = read_part_sector(state, 7, §); in aix_magic_present()
108 static void set_info(struct parsed_partitions *state, int slot, in set_info() argument
111 struct partition_meta_info *info = &state->parts[slot].info; in set_info()
113 snprintf(info->uuid, sizeof(info->uuid), "%08x-%02x", disksig, in set_info()
115 info->volname[0] = 0; in set_info()
116 state->parts[slot].has_info = true; in set_info()
130 static void parse_extended(struct parsed_partitions *state, in parse_extended() argument
134 struct msdos_partition *p; in parse_extended() local
143 sector_size = queue_logical_block_size(state->disk->queue) / 512; in parse_extended()
150 if (state->next == state->limit) in parse_extended()
152 data = read_part_sector(state, this_sector, §); in parse_extended()
159 p = (struct msdos_partition *) (data + 0x1be); in parse_extended()
173 for (i = 0; i < 4; i++, p++) { in parse_extended()
176 if (!nr_sects(p) || is_extended_partition(p)) in parse_extended()
179 /* Check the 3rd and 4th entries - in parse_extended()
181 offs = start_sect(p)*sector_size; in parse_extended()
182 size = nr_sects(p)*sector_size; in parse_extended()
193 put_partition(state, state->next, next, size); in parse_extended()
194 set_info(state, state->next, disksig); in parse_extended()
195 if (p->sys_ind == LINUX_RAID_PARTITION) in parse_extended()
196 state->parts[state->next].flags = ADDPART_FLAG_RAID; in parse_extended()
198 if (++state->next == state->limit) in parse_extended()
208 p -= 4; in parse_extended()
209 for (i = 0; i < 4; i++, p++) in parse_extended()
210 if (nr_sects(p) && is_extended_partition(p)) in parse_extended()
215 this_sector = first_sector + start_sect(p) * sector_size; in parse_extended()
216 this_size = nr_sects(p) * sector_size; in parse_extended()
250 static void parse_solaris_x86(struct parsed_partitions *state, in parse_solaris_x86() argument
259 v = read_part_sector(state, offset + 1, §); in parse_solaris_x86()
262 if (le32_to_cpu(v->v_sanity) != SOLARIS_X86_VTOC_SANE) { in parse_solaris_x86()
269 snprintf(tmp, sizeof(tmp), " %s%d: <solaris:", state->name, origin); in parse_solaris_x86()
270 strlcat(state->pp_buf, tmp, PAGE_SIZE); in parse_solaris_x86()
272 if (le32_to_cpu(v->v_version) != 1) { in parse_solaris_x86()
276 le32_to_cpu(v->v_version)); in parse_solaris_x86()
277 strlcat(state->pp_buf, tmp, PAGE_SIZE); in parse_solaris_x86()
282 max_nparts = le16_to_cpu(v->v_nparts) > 8 ? SOLARIS_X86_NUMSLICE : 8; in parse_solaris_x86()
283 for (i = 0; i < max_nparts && state->next < state->limit; i++) { in parse_solaris_x86()
284 struct solaris_x86_slice *s = &v->v_slice[i]; in parse_solaris_x86()
287 if (s->s_size == 0) in parse_solaris_x86()
290 strlcat(state->pp_buf, tmp, PAGE_SIZE); in parse_solaris_x86()
291 /* solaris partitions are relative to current MS-DOS in parse_solaris_x86()
293 put_partition(state, state->next++, in parse_solaris_x86()
294 le32_to_cpu(s->s_start)+offset, in parse_solaris_x86()
295 le32_to_cpu(s->s_size)); in parse_solaris_x86()
298 strlcat(state->pp_buf, " >\n", PAGE_SIZE); in parse_solaris_x86()
327 __u32 d_trkseek; /* track-to-track seek, usec */
330 __u32 d_drivedata[NDDATA]; /* drive-type specific information */
353 * dos-like partition. See parse_extended() for more information.
355 static void parse_bsd(struct parsed_partitions *state, in parse_bsd() argument
361 struct bsd_partition *p; in parse_bsd() local
364 l = read_part_sector(state, offset + 1, §); in parse_bsd()
367 if (le32_to_cpu(l->d_magic) != BSD_DISKMAGIC) { in parse_bsd()
372 snprintf(tmp, sizeof(tmp), " %s%d: <%s:", state->name, origin, flavour); in parse_bsd()
373 strlcat(state->pp_buf, tmp, PAGE_SIZE); in parse_bsd()
375 if (le16_to_cpu(l->d_npartitions) < max_partitions) in parse_bsd()
376 max_partitions = le16_to_cpu(l->d_npartitions); in parse_bsd()
377 for (p = l->d_partitions; p - l->d_partitions < max_partitions; p++) { in parse_bsd()
380 if (state->next == state->limit) in parse_bsd()
382 if (p->p_fstype == BSD_FS_UNUSED) in parse_bsd()
384 bsd_start = le32_to_cpu(p->p_offset); in parse_bsd()
385 bsd_size = le32_to_cpu(p->p_size); in parse_bsd()
388 le32_to_cpu(l->d_partitions[2].p_offset) == 0) in parse_bsd()
394 strlcat(state->pp_buf, "bad subpartition - ignored\n", PAGE_SIZE); in parse_bsd()
397 put_partition(state, state->next++, bsd_start, bsd_size); in parse_bsd()
400 if (le16_to_cpu(l->d_npartitions) > max_partitions) { in parse_bsd()
402 le16_to_cpu(l->d_npartitions) - max_partitions); in parse_bsd()
403 strlcat(state->pp_buf, tmp, PAGE_SIZE); in parse_bsd()
405 strlcat(state->pp_buf, " >\n", PAGE_SIZE); in parse_bsd()
409 static void parse_freebsd(struct parsed_partitions *state, in parse_freebsd() argument
413 parse_bsd(state, offset, size, origin, "bsd", BSD_MAXPARTITIONS); in parse_freebsd()
417 static void parse_netbsd(struct parsed_partitions *state, in parse_netbsd() argument
421 parse_bsd(state, offset, size, origin, "netbsd", BSD_MAXPARTITIONS); in parse_netbsd()
425 static void parse_openbsd(struct parsed_partitions *state, in parse_openbsd() argument
429 parse_bsd(state, offset, size, origin, "openbsd", in parse_openbsd()
481 * dos-like partition. See parse_extended() for more information.
483 static void parse_unixware(struct parsed_partitions *state, in parse_unixware() argument
489 struct unixware_slice *p; in parse_unixware() local
491 l = read_part_sector(state, offset + 29, §); in parse_unixware()
494 if (le32_to_cpu(l->d_magic) != UNIXWARE_DISKMAGIC || in parse_unixware()
495 le32_to_cpu(l->vtoc.v_magic) != UNIXWARE_DISKMAGIC2) { in parse_unixware()
502 snprintf(tmp, sizeof(tmp), " %s%d: <unixware:", state->name, origin); in parse_unixware()
503 strlcat(state->pp_buf, tmp, PAGE_SIZE); in parse_unixware()
505 p = &l->vtoc.v_slice[1]; in parse_unixware()
507 while (p - &l->vtoc.v_slice[0] < UNIXWARE_NUMSLICE) { in parse_unixware()
508 if (state->next == state->limit) in parse_unixware()
511 if (p->s_label != UNIXWARE_FS_UNUSED) in parse_unixware()
512 put_partition(state, state->next++, in parse_unixware()
513 le32_to_cpu(p->start_sect), in parse_unixware()
514 le32_to_cpu(p->nr_sects)); in parse_unixware()
515 p++; in parse_unixware()
518 strlcat(state->pp_buf, " >\n", PAGE_SIZE); in parse_unixware()
529 static void parse_minix(struct parsed_partitions *state, in parse_minix() argument
535 struct msdos_partition *p; in parse_minix() local
538 data = read_part_sector(state, offset, §); in parse_minix()
542 p = (struct msdos_partition *)(data + 0x1be); in parse_minix()
548 p->sys_ind == MINIX_PARTITION) { /* subpartition table present */ in parse_minix()
551 snprintf(tmp, sizeof(tmp), " %s%d: <minix:", state->name, origin); in parse_minix()
552 strlcat(state->pp_buf, tmp, PAGE_SIZE); in parse_minix()
553 for (i = 0; i < MINIX_NR_SUBPARTITIONS; i++, p++) { in parse_minix()
554 if (state->next == state->limit) in parse_minix()
557 if (p->sys_ind == MINIX_PARTITION) in parse_minix()
558 put_partition(state, state->next++, in parse_minix()
559 start_sect(p), nr_sects(p)); in parse_minix()
561 strlcat(state->pp_buf, " >\n", PAGE_SIZE); in parse_minix()
581 int msdos_partition(struct parsed_partitions *state) in msdos_partition() argument
586 struct msdos_partition *p; in msdos_partition() local
591 sector_size = queue_logical_block_size(state->disk->queue) / 512; in msdos_partition()
592 data = read_part_sector(state, 0, §); in msdos_partition()
594 return -1; in msdos_partition()
600 if (aix_magic_present(state, data)) { in msdos_partition()
603 return aix_partition(state); in msdos_partition()
605 strlcat(state->pp_buf, " [AIX]", PAGE_SIZE); in msdos_partition()
617 * either the boot sector of a FAT filesystem or a DOS-type in msdos_partition()
621 p = (struct msdos_partition *) (data + 0x1be); in msdos_partition()
622 for (slot = 1; slot <= 4; slot++, p++) { in msdos_partition()
623 if (p->boot_ind != 0 && p->boot_ind != 0x80) { in msdos_partition()
630 if (slot == 1 && fb->reserved && fb->fats in msdos_partition()
631 && fat_valid_media(fb->media)) { in msdos_partition()
632 strlcat(state->pp_buf, "\n", PAGE_SIZE); in msdos_partition()
643 p = (struct msdos_partition *) (data + 0x1be); in msdos_partition()
644 for (slot = 1 ; slot <= 4 ; slot++, p++) { in msdos_partition()
646 if (p->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT) { in msdos_partition()
652 p = (struct msdos_partition *) (data + 0x1be); in msdos_partition()
658 * First find the primary and DOS-type extended partitions. in msdos_partition()
662 state->next = 5; in msdos_partition()
663 for (slot = 1 ; slot <= 4 ; slot++, p++) { in msdos_partition()
664 sector_t start = start_sect(p)*sector_size; in msdos_partition()
665 sector_t size = nr_sects(p)*sector_size; in msdos_partition()
669 if (is_extended_partition(p)) { in msdos_partition()
679 put_partition(state, slot, start, n); in msdos_partition()
681 strlcat(state->pp_buf, " <", PAGE_SIZE); in msdos_partition()
682 parse_extended(state, start, size, disksig); in msdos_partition()
683 strlcat(state->pp_buf, " >", PAGE_SIZE); in msdos_partition()
686 put_partition(state, slot, start, size); in msdos_partition()
687 set_info(state, slot, disksig); in msdos_partition()
688 if (p->sys_ind == LINUX_RAID_PARTITION) in msdos_partition()
689 state->parts[slot].flags = ADDPART_FLAG_RAID; in msdos_partition()
690 if (p->sys_ind == DM6_PARTITION) in msdos_partition()
691 strlcat(state->pp_buf, "[DM]", PAGE_SIZE); in msdos_partition()
692 if (p->sys_ind == EZD_PARTITION) in msdos_partition()
693 strlcat(state->pp_buf, "[EZD]", PAGE_SIZE); in msdos_partition()
696 strlcat(state->pp_buf, "\n", PAGE_SIZE); in msdos_partition()
698 /* second pass - output for each on a separate line */ in msdos_partition()
699 p = (struct msdos_partition *) (0x1be + data); in msdos_partition()
700 for (slot = 1 ; slot <= 4 ; slot++, p++) { in msdos_partition()
701 unsigned char id = p->sys_ind; in msdos_partition()
704 if (!nr_sects(p)) in msdos_partition()
712 subtypes[n].parse(state, start_sect(p) * sector_size, in msdos_partition()
713 nr_sects(p) * sector_size, slot); in msdos_partition()