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author | Al Viro <viro@zeniv.linux.org.uk> | 2011-09-16 08:25:05 +0400 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-01-04 07:54:06 +0400 |
commit | 9be96f3fd10187f185d84cf878cf032465bcced3 (patch) | |
tree | 432a430ed9e0cbe0c18916cd3c3992f09b3feb37 /block/partitions/ultrix.c | |
parent | 4752bc309b7604d507c973c7b7678ac2ce10a058 (diff) | |
download | linux-9be96f3fd10187f185d84cf878cf032465bcced3.tar.xz |
move fs/partitions to block/
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'block/partitions/ultrix.c')
-rw-r--r-- | block/partitions/ultrix.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/block/partitions/ultrix.c b/block/partitions/ultrix.c new file mode 100644 index 000000000000..8dbaf9f77a99 --- /dev/null +++ b/block/partitions/ultrix.c @@ -0,0 +1,48 @@ +/* + * fs/partitions/ultrix.c + * + * Code extracted from drivers/block/genhd.c + * + * Re-organised Jul 1999 Russell King + */ + +#include "check.h" +#include "ultrix.h" + +int ultrix_partition(struct parsed_partitions *state) +{ + int i; + Sector sect; + unsigned char *data; + struct ultrix_disklabel { + s32 pt_magic; /* magic no. indicating part. info exits */ + s32 pt_valid; /* set by driver if pt is current */ + struct pt_info { + s32 pi_nblocks; /* no. of sectors */ + u32 pi_blkoff; /* block offset for start */ + } pt_part[8]; + } *label; + +#define PT_MAGIC 0x032957 /* Partition magic number */ +#define PT_VALID 1 /* Indicates if struct is valid */ + + data = read_part_sector(state, (16384 - sizeof(*label))/512, §); + if (!data) + return -1; + + label = (struct ultrix_disklabel *)(data + 512 - sizeof(*label)); + + if (label->pt_magic == PT_MAGIC && label->pt_valid == PT_VALID) { + for (i=0; i<8; i++) + if (label->pt_part[i].pi_nblocks) + put_partition(state, i+1, + label->pt_part[i].pi_blkoff, + label->pt_part[i].pi_nblocks); + put_dev_sector(sect); + strlcat(state->pp_buf, "\n", PAGE_SIZE); + return 1; + } else { + put_dev_sector(sect); + return 0; + } +} |