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!

1 files changed, 42 insertions, 0 deletions

diff --git a/arch/um/drivers/cow.h b/arch/um/drivers/cow.h
new file mode 100644
index 000000000000..4fcbe8b1b77e
--- /dev/null
+++ b/arch/um/drivers/cow.h
@@ -0,0 +1,42 @@
+#ifndef __COW_H__
+#define __COW_H__
+
+#include <asm/types.h>
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+# define ntohll(x) (x)
+# define htonll(x) (x)
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+# define ntohll(x)  bswap_64(x)
+# define htonll(x)  bswap_64(x)
+#else
+#error "__BYTE_ORDER not defined"
+#endif
+
+extern int init_cow_file(int fd, char *cow_file, char *backing_file,
+                         int sectorsize, int alignment, int *bitmap_offset_out,
+                         unsigned long *bitmap_len_out, int *data_offset_out);
+
+extern int file_reader(__u64 offset, char *buf, int len, void *arg);
+extern int read_cow_header(int (*reader)(__u64, char *, int, void *),
+                           void *arg, __u32 *version_out,
+                           char **backing_file_out, time_t *mtime_out,
+                           unsigned long long *size_out, int *sectorsize_out,
+                           __u32 *align_out, int *bitmap_offset_out);
+
+extern int write_cow_header(char *cow_file, int fd, char *backing_file,
+                            int sectorsize, int alignment,
+                            unsigned long long *size);
+
+extern void cow_sizes(int version, __u64 size, int sectorsize, int align,
+                      int bitmap_offset, unsigned long *bitmap_len_out,
+                      int *data_offset_out);
+
+#endif
+
+/*
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */