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author | Bob Copeland <me@bobcopeland.com> | 2006-01-16 22:14:20 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-16 23:15:29 -0800 |
commit | 0e6e1db4ac7acfe3e38bbef9eba59233ba7f6b9a (patch) | |
tree | c65c54b53ccfc110dac42e29a4094304e0a575dd /fs/partitions | |
parent | cad8244840d1a148f638925758afd1cdf81fc839 (diff) | |
download | kernel_samsung_espresso10-0e6e1db4ac7acfe3e38bbef9eba59233ba7f6b9a.zip kernel_samsung_espresso10-0e6e1db4ac7acfe3e38bbef9eba59233ba7f6b9a.tar.gz kernel_samsung_espresso10-0e6e1db4ac7acfe3e38bbef9eba59233ba7f6b9a.tar.bz2 |
[PATCH] partitions: Read Rio Karma partition table
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>
Diffstat (limited to 'fs/partitions')
-rw-r--r-- | fs/partitions/Kconfig | 7 | ||||
-rw-r--r-- | fs/partitions/Makefile | 1 | ||||
-rw-r--r-- | fs/partitions/check.c | 4 | ||||
-rw-r--r-- | fs/partitions/karma.c | 57 | ||||
-rw-r--r-- | fs/partitions/karma.h | 8 |
5 files changed, 77 insertions, 0 deletions
diff --git a/fs/partitions/Kconfig b/fs/partitions/Kconfig index 7490cc9..c9a4780 100644 --- a/fs/partitions/Kconfig +++ b/fs/partitions/Kconfig @@ -222,6 +222,13 @@ config SUN_PARTITION given by the tar program ("man tar" or preferably "info tar"). If you don't know what all this is about, say N. +config KARMA_PARTITION + bool "Karma Partition support" + depends on PARTITION_ADVANCED + help + Say Y here if you would like to mount the Rio Karma MP3 player, as it + uses a proprietary partition table. + config EFI_PARTITION bool "EFI GUID Partition support" depends on PARTITION_ADVANCED diff --git a/fs/partitions/Makefile b/fs/partitions/Makefile index 66d5cc2..42c7d38 100644 --- a/fs/partitions/Makefile +++ b/fs/partitions/Makefile @@ -17,3 +17,4 @@ obj-$(CONFIG_SUN_PARTITION) += sun.o obj-$(CONFIG_ULTRIX_PARTITION) += ultrix.o obj-$(CONFIG_IBM_PARTITION) += ibm.o obj-$(CONFIG_EFI_PARTITION) += efi.o +obj-$(CONFIG_KARMA_PARTITION) += karma.o diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 7881ce0..f924f45 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -35,6 +35,7 @@ #include "ibm.h" #include "ultrix.h" #include "efi.h" +#include "karma.h" #ifdef CONFIG_BLK_DEV_MD extern void md_autodetect_dev(dev_t dev); @@ -103,6 +104,9 @@ static int (*check_part[])(struct parsed_partitions *, struct block_device *) = #ifdef CONFIG_IBM_PARTITION ibm_partition, #endif +#ifdef CONFIG_KARMA_PARTITION + karma_partition, +#endif NULL }; diff --git a/fs/partitions/karma.c b/fs/partitions/karma.c new file mode 100644 index 0000000..176d89b --- /dev/null +++ b/fs/partitions/karma.c @@ -0,0 +1,57 @@ +/* + * fs/partitions/karma.c + * Rio Karma partition info. + * + * Copyright (C) 2006 Bob Copeland (me@bobcopeland.com) + * based on osf.c + */ + +#include "check.h" +#include "karma.h" + +int karma_partition(struct parsed_partitions *state, struct block_device *bdev) +{ + int i; + int slot = 1; + Sector sect; + unsigned char *data; + struct disklabel { + u8 d_reserved[270]; + struct d_partition { + __le32 p_res; + u8 p_fstype; + u8 p_res2[3]; + __le32 p_offset; + __le32 p_size; + } d_partitions[2]; + u8 d_blank[208]; + __le16 d_magic; + } __attribute__((packed)) *label; + struct d_partition *p; + + data = read_dev_sector(bdev, 0, §); + if (!data) + return -1; + + label = (struct disklabel *)data; + if (le16_to_cpu(label->d_magic) != KARMA_LABEL_MAGIC) { + put_dev_sector(sect); + return 0; + } + + p = label->d_partitions; + for (i = 0 ; i < 2; i++, p++) { + if (slot == state->limit) + break; + + if (p->p_fstype == 0x4d && le32_to_cpu(p->p_size)) { + put_partition(state, slot, le32_to_cpu(p->p_offset), + le32_to_cpu(p->p_size)); + } + slot++; + } + printk("\n"); + put_dev_sector(sect); + return 1; +} + diff --git a/fs/partitions/karma.h b/fs/partitions/karma.h new file mode 100644 index 0000000..ecf7d3f --- /dev/null +++ b/fs/partitions/karma.h @@ -0,0 +1,8 @@ +/* + * fs/partitions/karma.h + */ + +#define KARMA_LABEL_MAGIC 0xAB56 + +int karma_partition(struct parsed_partitions *state, struct block_device *bdev); + |