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>

1 files changed, 0 insertions, 131 deletions

diff --git a/fs/ceph/auth_none.c b/fs/ceph/auth_none.c
deleted file mode 100644
index ad1dc21286c7..000000000000
--- a/fs/ceph/auth_none.c
+++ /dev/null
@@ -1,131 +0,0 @@
-
-#include "ceph_debug.h"
-
-#include <linux/err.h>
-#include <linux/module.h>
-#include <linux/random.h>
-#include <linux/slab.h>
-
-#include "auth_none.h"
-#include "auth.h"
-#include "decode.h"
-
-static void reset(struct ceph_auth_client *ac)
-{
-	struct ceph_auth_none_info *xi = ac->private;
-
-	xi->starting = true;
-	xi->built_authorizer = false;
-}
-
-static void destroy(struct ceph_auth_client *ac)
-{
-	kfree(ac->private);
-	ac->private = NULL;
-}
-
-static int is_authenticated(struct ceph_auth_client *ac)
-{
-	struct ceph_auth_none_info *xi = ac->private;
-
-	return !xi->starting;
-}
-
-static int should_authenticate(struct ceph_auth_client *ac)
-{
-	struct ceph_auth_none_info *xi = ac->private;
-
-	return xi->starting;
-}
-
-/*
- * the generic auth code decode the global_id, and we carry no actual
- * authenticate state, so nothing happens here.
- */
-static int handle_reply(struct ceph_auth_client *ac, int result,
-			void *buf, void *end)
-{
-	struct ceph_auth_none_info *xi = ac->private;
-
-	xi->starting = false;
-	return result;
-}
-
-/*
- * build an 'authorizer' with our entity_name and global_id.  we can
- * reuse a single static copy since it is identical for all services
- * we connect to.
- */
-static int ceph_auth_none_create_authorizer(
-	struct ceph_auth_client *ac, int peer_type,
-	struct ceph_authorizer **a,
-	void **buf, size_t *len,
-	void **reply_buf, size_t *reply_len)
-{
-	struct ceph_auth_none_info *ai = ac->private;
-	struct ceph_none_authorizer *au = &ai->au;
-	void *p, *end;
-	int ret;
-
-	if (!ai->built_authorizer) {
-		p = au->buf;
-		end = p + sizeof(au->buf);
-		ceph_encode_8(&p, 1);
-		ret = ceph_entity_name_encode(ac->name, &p, end - 8);
-		if (ret < 0)
-			goto bad;
-		ceph_decode_need(&p, end, sizeof(u64), bad2);
-		ceph_encode_64(&p, ac->global_id);
-		au->buf_len = p - (void *)au->buf;
-		ai->built_authorizer = true;
-		dout("built authorizer len %d\n", au->buf_len);
-	}
-
-	*a = (struct ceph_authorizer *)au;
-	*buf = au->buf;
-	*len = au->buf_len;
-	*reply_buf = au->reply_buf;
-	*reply_len = sizeof(au->reply_buf);
-	return 0;
-
-bad2:
-	ret = -ERANGE;
-bad:
-	return ret;
-}
-
-static void ceph_auth_none_destroy_authorizer(struct ceph_auth_client *ac,
-				      struct ceph_authorizer *a)
-{
-	/* nothing to do */
-}
-
-static const struct ceph_auth_client_ops ceph_auth_none_ops = {
-	.name = "none",
-	.reset = reset,
-	.destroy = destroy,
-	.is_authenticated = is_authenticated,
-	.should_authenticate = should_authenticate,
-	.handle_reply = handle_reply,
-	.create_authorizer = ceph_auth_none_create_authorizer,
-	.destroy_authorizer = ceph_auth_none_destroy_authorizer,
-};
-
-int ceph_auth_none_init(struct ceph_auth_client *ac)
-{
-	struct ceph_auth_none_info *xi;
-
-	dout("ceph_auth_none_init %p\n", ac);
-	xi = kzalloc(sizeof(*xi), GFP_NOFS);
-	if (!xi)
-		return -ENOMEM;
-
-	xi->starting = true;
-	xi->built_authorizer = false;
-
-	ac->protocol = CEPH_AUTH_NONE;
-	ac->private = xi;
-	ac->ops = &ceph_auth_none_ops;
-	return 0;
-}
-