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0e6e1db4ac
The Rio Karma portable MP3 player has its own proprietary partition table. The partition layout is similar to a DOS boot sector but it begins at a different offset and uses a different magic number (0xAB56 instead of 0xAA55). Add support for it to enable mounting the device. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
/*
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* fs/partitions/karma.c
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* Rio Karma partition info.
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*
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* Copyright (C) 2006 Bob Copeland (me@bobcopeland.com)
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* based on osf.c
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*/
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#include "check.h"
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#include "karma.h"
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int karma_partition(struct parsed_partitions *state, struct block_device *bdev)
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{
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int i;
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int slot = 1;
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Sector sect;
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unsigned char *data;
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struct disklabel {
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u8 d_reserved[270];
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struct d_partition {
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__le32 p_res;
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u8 p_fstype;
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u8 p_res2[3];
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__le32 p_offset;
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__le32 p_size;
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} d_partitions[2];
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u8 d_blank[208];
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__le16 d_magic;
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} __attribute__((packed)) *label;
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struct d_partition *p;
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data = read_dev_sector(bdev, 0, §);
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if (!data)
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return -1;
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label = (struct disklabel *)data;
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if (le16_to_cpu(label->d_magic) != KARMA_LABEL_MAGIC) {
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put_dev_sector(sect);
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return 0;
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}
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p = label->d_partitions;
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for (i = 0 ; i < 2; i++, p++) {
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if (slot == state->limit)
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break;
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if (p->p_fstype == 0x4d && le32_to_cpu(p->p_size)) {
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put_partition(state, slot, le32_to_cpu(p->p_offset),
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le32_to_cpu(p->p_size));
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}
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slot++;
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}
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printk("\n");
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put_dev_sector(sect);
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return 1;
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}
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