ceph: factor out libceph from Ceph file system
This factors out protocol and low-level storage parts of ceph into a
separate libceph module living in net/ceph and include/linux/ceph. This
is mostly a matter of moving files around. However, a few key pieces
of the interface change as well:
- ceph_client becomes ceph_fs_client and ceph_client, where the latter
captures the mon and osd clients, and the fs_client gets the mds client
and file system specific pieces.
- Mount option parsing and debugfs setup is correspondingly broken into
two pieces.
- The mon client gets a generic handler callback for otherwise unknown
messages (mds map, in this case).
- The basic supported/required feature bits can be expanded (and are by
ceph_fs_client).
No functional change, aside from some subtle error handling cases that got
cleaned up in the refactoring process.
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/net/ceph/crypto.h b/net/ceph/crypto.h
new file mode 100644
index 0000000..f9eccac
--- /dev/null
+++ b/net/ceph/crypto.h
@@ -0,0 +1,48 @@
+#ifndef _FS_CEPH_CRYPTO_H
+#define _FS_CEPH_CRYPTO_H
+
+#include <linux/ceph/types.h>
+#include <linux/ceph/buffer.h>
+
+/*
+ * cryptographic secret
+ */
+struct ceph_crypto_key {
+ int type;
+ struct ceph_timespec created;
+ int len;
+ void *key;
+};
+
+static inline void ceph_crypto_key_destroy(struct ceph_crypto_key *key)
+{
+ kfree(key->key);
+}
+
+extern int ceph_crypto_key_encode(struct ceph_crypto_key *key,
+ void **p, void *end);
+extern int ceph_crypto_key_decode(struct ceph_crypto_key *key,
+ void **p, void *end);
+extern int ceph_crypto_key_unarmor(struct ceph_crypto_key *key, const char *in);
+
+/* crypto.c */
+extern int ceph_decrypt(struct ceph_crypto_key *secret,
+ void *dst, size_t *dst_len,
+ const void *src, size_t src_len);
+extern int ceph_encrypt(struct ceph_crypto_key *secret,
+ void *dst, size_t *dst_len,
+ const void *src, size_t src_len);
+extern int ceph_decrypt2(struct ceph_crypto_key *secret,
+ void *dst1, size_t *dst1_len,
+ void *dst2, size_t *dst2_len,
+ const void *src, size_t src_len);
+extern int ceph_encrypt2(struct ceph_crypto_key *secret,
+ void *dst, size_t *dst_len,
+ const void *src1, size_t src1_len,
+ const void *src2, size_t src2_len);
+
+/* armor.c */
+extern int ceph_armor(char *dst, const char *src, const char *end);
+extern int ceph_unarmor(char *dst, const char *src, const char *end);
+
+#endif