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
43 	return (sector_t)get_unaligned_le32(&p->nr_sects);  in nr_sects()
48 	return (sector_t)get_unaligned_le32(&p->start_sect);  in start_sect()
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()
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()
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()
143 	sector_size = queue_logical_block_size(state->disk->queue) / 512;  in parse_extended()
150 		if (state->next == state->limit)  in parse_extended()
179 			/* Check the 3rd and 4th entries -  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()
242 		v_slice[SOLARIS_X86_NUMSLICE]; /* slice headers */
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()
313 	__u32	d_secsize;		/* # of bytes per sector */
314 	__u32	d_nsectors;		/* # of data sectors per track */
315 	__u32	d_ntracks;		/* # of tracks per cylinder */
316 	__u32	d_ncylinders;		/* # of data cylinders per unit */
317 	__u32	d_secpercyl;		/* # of data sectors per cylinder */
318 	__u32	d_secperunit;		/* # of data sectors per unit */
319 	__u16	d_sparespertrack;	/* # of spare sectors per track */
320 	__u16	d_sparespercyl;		/* # of spare sectors per cylinder */
321 	__u32	d_acylinders;		/* # of alt. cylinders per unit */
324 	__u16	d_trackskew;		/* sector 0 skew, per track */
325 	__u16	d_cylskew;		/* sector 0 skew, per cylinder */
327 	__u32	d_trkseek;		/* track-to-track seek, usec */
330 	__u32	d_drivedata[NDDATA];	/* drive-type specific information */
345 		__u8	p_frag;		/* filesystem fragments per block */
346 		__le16	p_cpg;		/* filesystem cylinders per group */
353  * dos-like partition. See parse_extended() for more information.
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()
435 #define UNIXWARE_DISKMAGIC2    (0x600DDEEEUL)	/* The slice table magic nr */
437 #define UNIXWARE_FS_UNUSED     0		/* Unused slice entry ID */
443 	__le32   nr_sects;	/* number of sectors in slice */
451 	__le32	d_ncylinders;		/* # of data cylinders per device */
452 	__le32	d_ntracks;		/* # of tracks per cylinder */
453 	__le32	d_nsectors;		/* # of data sectors per track */
454 	__le32	d_secsize;		/* # of bytes per sector */
459 	__le32	d_phys_cyl;		/* # of physical cylinders per device */
460 	__le32	d_phys_trk;		/* # of physical tracks per cylinder */
461 	__le32	d_phys_sec;		/* # of physical sectors per track */
462 	__le32	d_phys_bytes;		/* # of physical bytes per sector */
475 			v_slice[UNIXWARE_NUMSLICE];	/* slice headers */
481  * dos-like partition. See parse_extended() for more information.
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()
506 	/* I omit the 0th slice as it is the same as whole disk. */  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()
518 	strlcat(state->pp_buf, " >\n", PAGE_SIZE);  in parse_unixware()
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()
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()
561 		strlcat(state->pp_buf, " >\n", PAGE_SIZE);  in parse_minix()
591 	sector_size = queue_logical_block_size(state->disk->queue) / 512;  in msdos_partition()
594 		return -1;  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()
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()
646 		if (p->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT) {  in msdos_partition()
658 	 * First find the primary and DOS-type extended partitions.  in msdos_partition()
662 	state->next = 5;  in msdos_partition()
681 			strlcat(state->pp_buf, " <", PAGE_SIZE);  in msdos_partition()
683 			strlcat(state->pp_buf, " >", PAGE_SIZE);  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()
701 		unsigned char id = p->sys_ind;  in msdos_partition()