Release 4.14 block/partitions/osf.c

// SPDX-License-Identifier: GPL-2.0
/*
 *  fs/partitions/osf.c
 *
 *  Code extracted from drivers/block/genhd.c
 *
 *  Copyright (C) 1991-1998  Linus Torvalds
 *  Re-organised Feb 1998 Russell King
 */

#include "check.h"
#include "osf.h"


#define MAX_OSF_PARTITIONS 18



int osf_partition(struct parsed_partitions *state)
{
	int i;
	int slot = 1;
	unsigned int npartitions;
	Sector sect;
	unsigned char *data;
	struct disklabel {
		__le32 d_magic;
		__le16 d_type,d_subtype;
		u8 d_typename[16];
		u8 d_packname[16];
		__le32 d_secsize;
		__le32 d_nsectors;
		__le32 d_ntracks;
		__le32 d_ncylinders;
		__le32 d_secpercyl;
		__le32 d_secprtunit;
		__le16 d_sparespertrack;
		__le16 d_sparespercyl;
		__le32 d_acylinders;
		__le16 d_rpm, d_interleave, d_trackskew, d_cylskew;
		__le32 d_headswitch, d_trkseek, d_flags;
		__le32 d_drivedata[5];
		__le32 d_spare[5];
		__le32 d_magic2;
		__le16 d_checksum;
		__le16 d_npartitions;
		__le32 d_bbsize, d_sbsize;
		struct d_partition {
			__le32 p_size;
			__le32 p_offset;
			__le32 p_fsize;
			u8  p_fstype;
			u8  p_frag;
			__le16 p_cpg;
		} d_partitions[MAX_OSF_PARTITIONS];
	} * label;
	struct d_partition * partition;

	data = read_part_sector(state, 0, &sect);
	if (!data)
		return -1;

	label = (struct disklabel *) (data+64);
	partition = label->d_partitions;
	if (le32_to_cpu(label->d_magic) != DISKLABELMAGIC) {
		put_dev_sector(sect);
		return 0;
	}
	if (le32_to_cpu(label->d_magic2) != DISKLABELMAGIC) {
		put_dev_sector(sect);
		return 0;
	}
	npartitions = le16_to_cpu(label->d_npartitions);
	if (npartitions > MAX_OSF_PARTITIONS) {
		put_dev_sector(sect);
		return 0;
	}
	for (i = 0 ; i < npartitions; i++, partition++) {
		if (slot == state->limit)
		        break;
		if (le32_to_cpu(partition->p_size))
			put_partition(state, slot,
				le32_to_cpu(partition->p_offset),
				le32_to_cpu(partition->p_size));
		slot++;
	}
	strlcat(state->pp_buf, "\n", PAGE_SIZE);
	put_dev_sector(sect);
	return 1;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
228
66.28%
2
20.00%
Al Viro
37
10.76%
2
20.00%
Linus Torvalds
36
10.47%
2
20.00%
Timo Warns
31
9.01%
1
10.00%
Alexey Dobriyan
7
2.03%
1
10.00%
Andries E. Brouwer
3
0.87%
1
10.00%
Tejun Heo
2
0.58%
1
10.00%
Total
344
100.00%
10
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
235
66.01%
2
16.67%
Al Viro
37
10.39%
2
16.67%
Linus Torvalds
37
10.39%
3
25.00%
Timo Warns
34
9.55%
1
8.33%
Alexey Dobriyan
7
1.97%
1
8.33%
Andries E. Brouwer
3
0.84%
1
8.33%
Tejun Heo
2
0.56%
1
8.33%
Greg Kroah-Hartman
1
0.28%
1
8.33%
Total
356
100.00%
12
100.00%
Directory: block/partitions

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