1 files changed, 78 insertions, 0 deletions

diff --git a/fs/partitions/osf.c b/fs/partitions/osf.c
new file mode 100644
index 000000000000..c05c17bc5df3
--- /dev/null
+++ b/fs/partitions/osf.c
@@ -0,0 +1,78 @@
+/*
+ *  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"
+
+int osf_partition(struct parsed_partitions *state, struct block_device *bdev)
+{
+        int i;
+        int slot = 1;
+        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[8];
+        } * label;
+        struct d_partition * partition;
+
+        data = read_dev_sector(bdev, 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;
+        }
+        for (i = 0 ; i < le16_to_cpu(label->d_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++;
+        }
+        printk("\n");
+        put_dev_sector(sect);
+        return 1;
+}