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1 | |
2 | #include <linux/ceph/ceph_debug.h> |
3 | |
4 | #include <linux/err.h> |
5 | #include <linux/module.h> |
6 | #include <linux/random.h> |
7 | #include <linux/slab.h> |
8 | |
9 | #include <linux/ceph/decode.h> |
10 | #include <linux/ceph/auth.h> |
11 | |
12 | #include "auth_none.h" |
13 | |
14 | static void reset(struct ceph_auth_client *ac) |
15 | { |
16 | struct ceph_auth_none_info *xi = ac->private; |
17 | |
18 | xi->starting = true; |
19 | xi->built_authorizer = false; |
20 | } |
21 | |
22 | static void destroy(struct ceph_auth_client *ac) |
23 | { |
24 | kfree(ac->private); |
25 | ac->private = NULL; |
26 | } |
27 | |
28 | static int is_authenticated(struct ceph_auth_client *ac) |
29 | { |
30 | struct ceph_auth_none_info *xi = ac->private; |
31 | |
32 | return !xi->starting; |
33 | } |
34 | |
35 | static int should_authenticate(struct ceph_auth_client *ac) |
36 | { |
37 | struct ceph_auth_none_info *xi = ac->private; |
38 | |
39 | return xi->starting; |
40 | } |
41 | |
42 | static int build_request(struct ceph_auth_client *ac, void *buf, void *end) |
43 | { |
44 | return 0; |
45 | } |
46 | |
47 | /* |
48 | * the generic auth code decode the global_id, and we carry no actual |
49 | * authenticate state, so nothing happens here. |
50 | */ |
51 | static int handle_reply(struct ceph_auth_client *ac, int result, |
52 | void *buf, void *end) |
53 | { |
54 | struct ceph_auth_none_info *xi = ac->private; |
55 | |
56 | xi->starting = false; |
57 | return result; |
58 | } |
59 | |
60 | /* |
61 | * build an 'authorizer' with our entity_name and global_id. we can |
62 | * reuse a single static copy since it is identical for all services |
63 | * we connect to. |
64 | */ |
65 | static int ceph_auth_none_create_authorizer( |
66 | struct ceph_auth_client *ac, int peer_type, |
67 | struct ceph_auth_handshake *auth) |
68 | { |
69 | struct ceph_auth_none_info *ai = ac->private; |
70 | struct ceph_none_authorizer *au = &ai->au; |
71 | void *p, *end; |
72 | int ret; |
73 | |
74 | if (!ai->built_authorizer) { |
75 | p = au->buf; |
76 | end = p + sizeof(au->buf); |
77 | ceph_encode_8(&p, 1); |
78 | ret = ceph_entity_name_encode(ac->name, &p, end - 8); |
79 | if (ret < 0) |
80 | goto bad; |
81 | ceph_decode_need(&p, end, sizeof(u64), bad2); |
82 | ceph_encode_64(&p, ac->global_id); |
83 | au->buf_len = p - (void *)au->buf; |
84 | ai->built_authorizer = true; |
85 | dout("built authorizer len %d\n", au->buf_len); |
86 | } |
87 | |
88 | auth->authorizer = (struct ceph_authorizer *) au; |
89 | auth->authorizer_buf = au->buf; |
90 | auth->authorizer_buf_len = au->buf_len; |
91 | auth->authorizer_reply_buf = au->reply_buf; |
92 | auth->authorizer_reply_buf_len = sizeof (au->reply_buf); |
93 | |
94 | return 0; |
95 | |
96 | bad2: |
97 | ret = -ERANGE; |
98 | bad: |
99 | return ret; |
100 | } |
101 | |
102 | static void ceph_auth_none_destroy_authorizer(struct ceph_auth_client *ac, |
103 | struct ceph_authorizer *a) |
104 | { |
105 | /* nothing to do */ |
106 | } |
107 | |
108 | static const struct ceph_auth_client_ops ceph_auth_none_ops = { |
109 | .name = "none", |
110 | .reset = reset, |
111 | .destroy = destroy, |
112 | .is_authenticated = is_authenticated, |
113 | .should_authenticate = should_authenticate, |
114 | .build_request = build_request, |
115 | .handle_reply = handle_reply, |
116 | .create_authorizer = ceph_auth_none_create_authorizer, |
117 | .destroy_authorizer = ceph_auth_none_destroy_authorizer, |
118 | }; |
119 | |
120 | int ceph_auth_none_init(struct ceph_auth_client *ac) |
121 | { |
122 | struct ceph_auth_none_info *xi; |
123 | |
124 | dout("ceph_auth_none_init %p\n", ac); |
125 | xi = kzalloc(sizeof(*xi), GFP_NOFS); |
126 | if (!xi) |
127 | return -ENOMEM; |
128 | |
129 | xi->starting = true; |
130 | xi->built_authorizer = false; |
131 | |
132 | ac->protocol = CEPH_AUTH_NONE; |
133 | ac->private = xi; |
134 | ac->ops = &ceph_auth_none_ops; |
135 | return 0; |
136 | } |
137 | |
138 |
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Tags:
od-2011-09-04
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v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9