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-rw-r--r--fs/ceph/auth.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/fs/ceph/auth.h b/fs/ceph/auth.h
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1#ifndef _FS_CEPH_AUTH_H
2#define _FS_CEPH_AUTH_H
3
4#include "types.h"
5#include "buffer.h"
6
7/*
8 * Abstract interface for communicating with the authenticate module.
9 * There is some handshake that takes place between us and the monitor
10 * to acquire the necessary keys. These are used to generate an
11 * 'authorizer' that we use when connecting to a service (mds, osd).
12 */
13
14struct ceph_auth_client;
15struct ceph_authorizer;
16
17struct ceph_auth_client_ops {
18 /*
19 * true if we are authenticated and can connect to
20 * services.
21 */
22 int (*is_authenticated)(struct ceph_auth_client *ac);
23
24 /*
25 * build requests and process replies during monitor
26 * handshake. if handle_reply returns -EAGAIN, we build
27 * another request.
28 */
29 int (*build_request)(struct ceph_auth_client *ac, void *buf, void *end);
30 int (*handle_reply)(struct ceph_auth_client *ac, int result,
31 void *buf, void *end);
32
33 /*
34 * Create authorizer for connecting to a service, and verify
35 * the response to authenticate the service.
36 */
37 int (*create_authorizer)(struct ceph_auth_client *ac, int peer_type,
38 struct ceph_authorizer **a,
39 void **buf, size_t *len,
40 void **reply_buf, size_t *reply_len);
41 int (*verify_authorizer_reply)(struct ceph_auth_client *ac,
42 struct ceph_authorizer *a, size_t len);
43 void (*destroy_authorizer)(struct ceph_auth_client *ac,
44 struct ceph_authorizer *a);
45 void (*invalidate_authorizer)(struct ceph_auth_client *ac,
46 int peer_type);
47
48 /* reset when we (re)connect to a monitor */
49 void (*reset)(struct ceph_auth_client *ac);
50
51 void (*destroy)(struct ceph_auth_client *ac);
52};
53
54struct ceph_auth_client {
55 u32 protocol; /* CEPH_AUTH_* */
56 void *private; /* for use by protocol implementation */
57 const struct ceph_auth_client_ops *ops; /* null iff protocol==0 */
58
59 bool negotiating; /* true if negotiating protocol */
60 const char *name; /* entity name */
61 u64 global_id; /* our unique id in system */
62 const char *secret; /* our secret key */
63 unsigned want_keys; /* which services we want */
64};
65
66extern struct ceph_auth_client *ceph_auth_init(const char *name,
67 const char *secret);
68extern void ceph_auth_destroy(struct ceph_auth_client *ac);
69
70extern void ceph_auth_reset(struct ceph_auth_client *ac);
71
72extern int ceph_auth_build_hello(struct ceph_auth_client *ac,
73 void *buf, size_t len);
74extern int ceph_handle_auth_reply(struct ceph_auth_client *ac,
75 void *buf, size_t len,
76 void *reply_buf, size_t reply_len);
77extern int ceph_entity_name_encode(const char *name, void **p, void *end);
78
79extern int ceph_build_auth(struct ceph_auth_client *ac,
80 void *msg_buf, size_t msg_len);
81
82extern int ceph_auth_is_authenticated(struct ceph_auth_client *ac);
83
84#endif