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authorAl Viro <viro@zeniv.linux.org.uk>2011-09-16 00:25:05 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-01-03 22:54:06 -0500
commit9be96f3fd10187f185d84cf878cf032465bcced3 (patch)
tree432a430ed9e0cbe0c18916cd3c3992f09b3feb37 /block/partitions/osf.c
parent4752bc309b7604d507c973c7b7678ac2ce10a058 (diff)
downloadlinux-0-day-9be96f3fd10187f185d84cf878cf032465bcced3.tar.gz
move fs/partitions to block/
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'block/partitions/osf.c')
-rw-r--r--block/partitions/osf.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/block/partitions/osf.c b/block/partitions/osf.c
new file mode 100644
index 0000000..764b86a
--- /dev/null
+++ b/block/partitions/osf.c
@@ -0,0 +1,86 @@
+/*
+ * 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;
+}