Linux-2.6.12-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!
diff --git a/fs/partitions/amiga.c b/fs/partitions/amiga.c
new file mode 100644
index 0000000..3068528
--- /dev/null
+++ b/fs/partitions/amiga.c
@@ -0,0 +1,128 @@
+/*
+ * fs/partitions/amiga.c
+ *
+ * Code extracted from drivers/block/genhd.c
+ *
+ * Copyright (C) 1991-1998 Linus Torvalds
+ * Re-organised Feb 1998 Russell King
+ */
+
+#include <linux/types.h>
+#include <linux/affs_hardblocks.h>
+
+#include "check.h"
+#include "amiga.h"
+
+static __inline__ u32
+checksum_block(__be32 *m, int size)
+{
+ u32 sum = 0;
+
+ while (size--)
+ sum += be32_to_cpu(*m++);
+ return sum;
+}
+
+int
+amiga_partition(struct parsed_partitions *state, struct block_device *bdev)
+{
+ Sector sect;
+ unsigned char *data;
+ struct RigidDiskBlock *rdb;
+ struct PartitionBlock *pb;
+ int start_sect, nr_sects, blk, part, res = 0;
+ int blksize = 1; /* Multiplier for disk block size */
+ int slot = 1;
+ char b[BDEVNAME_SIZE];
+
+ for (blk = 0; ; blk++, put_dev_sector(sect)) {
+ if (blk == RDB_ALLOCATION_LIMIT)
+ goto rdb_done;
+ data = read_dev_sector(bdev, blk, §);
+ if (!data) {
+ if (warn_no_part)
+ printk("Dev %s: unable to read RDB block %d\n",
+ bdevname(bdev, b), blk);
+ goto rdb_done;
+ }
+ if (*(__be32 *)data != cpu_to_be32(IDNAME_RIGIDDISK))
+ continue;
+
+ rdb = (struct RigidDiskBlock *)data;
+ if (checksum_block((__be32 *)data, be32_to_cpu(rdb->rdb_SummedLongs) & 0x7F) == 0)
+ break;
+ /* Try again with 0xdc..0xdf zeroed, Windows might have
+ * trashed it.
+ */
+ *(__be32 *)(data+0xdc) = 0;
+ if (checksum_block((__be32 *)data,
+ be32_to_cpu(rdb->rdb_SummedLongs) & 0x7F)==0) {
+ printk("Warning: Trashed word at 0xd0 in block %d "
+ "ignored in checksum calculation\n",blk);
+ break;
+ }
+
+ printk("Dev %s: RDB in block %d has bad checksum\n",
+ bdevname(bdev, b), blk);
+ }
+
+ /* blksize is blocks per 512 byte standard block */
+ blksize = be32_to_cpu( rdb->rdb_BlockBytes ) / 512;
+
+ printk(" RDSK (%d)", blksize * 512); /* Be more informative */
+ blk = be32_to_cpu(rdb->rdb_PartitionList);
+ put_dev_sector(sect);
+ for (part = 1; blk>0 && part<=16; part++, put_dev_sector(sect)) {
+ blk *= blksize; /* Read in terms partition table understands */
+ data = read_dev_sector(bdev, blk, §);
+ if (!data) {
+ if (warn_no_part)
+ printk("Dev %s: unable to read partition block %d\n",
+ bdevname(bdev, b), blk);
+ goto rdb_done;
+ }
+ pb = (struct PartitionBlock *)data;
+ blk = be32_to_cpu(pb->pb_Next);
+ if (pb->pb_ID != cpu_to_be32(IDNAME_PARTITION))
+ continue;
+ if (checksum_block((__be32 *)pb, be32_to_cpu(pb->pb_SummedLongs) & 0x7F) != 0 )
+ continue;
+
+ /* Tell Kernel about it */
+
+ nr_sects = (be32_to_cpu(pb->pb_Environment[10]) + 1 -
+ be32_to_cpu(pb->pb_Environment[9])) *
+ be32_to_cpu(pb->pb_Environment[3]) *
+ be32_to_cpu(pb->pb_Environment[5]) *
+ blksize;
+ if (!nr_sects)
+ continue;
+ start_sect = be32_to_cpu(pb->pb_Environment[9]) *
+ be32_to_cpu(pb->pb_Environment[3]) *
+ be32_to_cpu(pb->pb_Environment[5]) *
+ blksize;
+ put_partition(state,slot++,start_sect,nr_sects);
+ {
+ /* Be even more informative to aid mounting */
+ char dostype[4];
+ __be32 *dt = (__be32 *)dostype;
+ *dt = pb->pb_Environment[16];
+ if (dostype[3] < ' ')
+ printk(" (%c%c%c^%c)",
+ dostype[0], dostype[1],
+ dostype[2], dostype[3] + '@' );
+ else
+ printk(" (%c%c%c%c)",
+ dostype[0], dostype[1],
+ dostype[2], dostype[3]);
+ printk("(res %d spb %d)",
+ be32_to_cpu(pb->pb_Environment[6]),
+ be32_to_cpu(pb->pb_Environment[4]));
+ }
+ res = 1;
+ }
+ printk("\n");
+
+rdb_done:
+ return res;
+}
