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/include/linux/adfs_fs.h b/include/linux/adfs_fs.h
new file mode 100644
index 0000000..4a5d50c
--- /dev/null
+++ b/include/linux/adfs_fs.h
@@ -0,0 +1,76 @@
+#ifndef _ADFS_FS_H
+#define _ADFS_FS_H
+
+#include <linux/types.h>
+
+/*
+ * Disc Record at disc address 0xc00
+ */
+struct adfs_discrecord {
+ __u8 log2secsize;
+ __u8 secspertrack;
+ __u8 heads;
+ __u8 density;
+ __u8 idlen;
+ __u8 log2bpmb;
+ __u8 skew;
+ __u8 bootoption;
+ __u8 lowsector;
+ __u8 nzones;
+ __le16 zone_spare;
+ __le32 root;
+ __le32 disc_size;
+ __le16 disc_id;
+ __u8 disc_name[10];
+ __le32 disc_type;
+ __le32 disc_size_high;
+ __u8 log2sharesize:4;
+ __u8 unused40:4;
+ __u8 big_flag:1;
+ __u8 unused41:1;
+ __u8 nzones_high;
+ __le32 format_version;
+ __le32 root_size;
+ __u8 unused52[60 - 52];
+};
+
+#define ADFS_DISCRECORD (0xc00)
+#define ADFS_DR_OFFSET (0x1c0)
+#define ADFS_DR_SIZE 60
+#define ADFS_DR_SIZE_BITS (ADFS_DR_SIZE << 3)
+#define ADFS_SUPER_MAGIC 0xadf5
+
+#ifdef __KERNEL__
+#include <linux/adfs_fs_i.h>
+#include <linux/adfs_fs_sb.h>
+/*
+ * Calculate the boot block checksum on an ADFS drive. Note that this will
+ * appear to be correct if the sector contains all zeros, so also check that
+ * the disk size is non-zero!!!
+ */
+static inline int adfs_checkbblk(unsigned char *ptr)
+{
+ unsigned int result = 0;
+ unsigned char *p = ptr + 511;
+
+ do {
+ result = (result & 0xff) + (result >> 8);
+ result = result + *--p;
+ } while (p != ptr);
+
+ return (result & 0xff) != ptr[511];
+}
+
+static inline struct adfs_sb_info *ADFS_SB(struct super_block *sb)
+{
+ return sb->s_fs_info;
+}
+
+static inline struct adfs_inode_info *ADFS_I(struct inode *inode)
+{
+ return container_of(inode, struct adfs_inode_info, vfs_inode);
+}
+
+#endif
+
+#endif