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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/partitions/osf.c
downloadop-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip
op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'fs/partitions/osf.c')
-rw-r--r--fs/partitions/osf.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/fs/partitions/osf.c b/fs/partitions/osf.c
new file mode 100644
index 0000000..c05c17bc
--- /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;
+}
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