The ps2esdi driver was marked as BROKEN more than two years ago due to being
[linux-2.6] / include / linux / sunrpc / gss_api.h
1 /*
2  * linux/include/linux/sunrpc/gss_api.h
3  *
4  * Somewhat simplified version of the gss api.
5  *
6  * Dug Song <dugsong@monkey.org>
7  * Andy Adamson <andros@umich.edu>
8  * Bruce Fields <bfields@umich.edu>
9  * Copyright (c) 2000 The Regents of the University of Michigan
10  *
11  * $Id$
12  */
13
14 #ifndef _LINUX_SUNRPC_GSS_API_H
15 #define _LINUX_SUNRPC_GSS_API_H
16
17 #ifdef __KERNEL__
18 #include <linux/sunrpc/xdr.h>
19 #include <linux/uio.h>
20
21 /* The mechanism-independent gss-api context: */
22 struct gss_ctx {
23         struct gss_api_mech     *mech_type;
24         void                    *internal_ctx_id;
25 };
26
27 #define GSS_C_NO_BUFFER         ((struct xdr_netobj) 0)
28 #define GSS_C_NO_CONTEXT        ((struct gss_ctx *) 0)
29 #define GSS_C_NULL_OID          ((struct xdr_netobj) 0)
30
31 /*XXX  arbitrary length - is this set somewhere? */
32 #define GSS_OID_MAX_LEN 32
33
34 /* gss-api prototypes; note that these are somewhat simplified versions of
35  * the prototypes specified in RFC 2744. */
36 int gss_import_sec_context(
37                 const void*             input_token,
38                 size_t                  bufsize,
39                 struct gss_api_mech     *mech,
40                 struct gss_ctx          **ctx_id);
41 u32 gss_get_mic(
42                 struct gss_ctx          *ctx_id,
43                 struct xdr_buf          *message,
44                 struct xdr_netobj       *mic_token);
45 u32 gss_verify_mic(
46                 struct gss_ctx          *ctx_id,
47                 struct xdr_buf          *message,
48                 struct xdr_netobj       *mic_token);
49 u32 gss_wrap(
50                 struct gss_ctx          *ctx_id,
51                 int                     offset,
52                 struct xdr_buf          *outbuf,
53                 struct page             **inpages);
54 u32 gss_unwrap(
55                 struct gss_ctx          *ctx_id,
56                 int                     offset,
57                 struct xdr_buf          *inbuf);
58 u32 gss_delete_sec_context(
59                 struct gss_ctx          **ctx_id);
60
61 u32 gss_svc_to_pseudoflavor(struct gss_api_mech *, u32 service);
62 u32 gss_pseudoflavor_to_service(struct gss_api_mech *, u32 pseudoflavor);
63 char *gss_service_to_auth_domain_name(struct gss_api_mech *, u32 service);
64
65 struct pf_desc {
66         u32     pseudoflavor;
67         u32     service;
68         char    *name;
69         char    *auth_domain_name;
70 };
71
72 /* Different mechanisms (e.g., krb5 or spkm3) may implement gss-api, and
73  * mechanisms may be dynamically registered or unregistered by modules. */
74
75 /* Each mechanism is described by the following struct: */
76 struct gss_api_mech {
77         struct list_head        gm_list;
78         struct module           *gm_owner;
79         struct xdr_netobj       gm_oid;
80         char                    *gm_name;
81         const struct gss_api_ops *gm_ops;
82         /* pseudoflavors supported by this mechanism: */
83         int                     gm_pf_num;
84         struct pf_desc *        gm_pfs;
85 };
86
87 /* and must provide the following operations: */
88 struct gss_api_ops {
89         int (*gss_import_sec_context)(
90                         const void              *input_token,
91                         size_t                  bufsize,
92                         struct gss_ctx          *ctx_id);
93         u32 (*gss_get_mic)(
94                         struct gss_ctx          *ctx_id,
95                         struct xdr_buf          *message,
96                         struct xdr_netobj       *mic_token);
97         u32 (*gss_verify_mic)(
98                         struct gss_ctx          *ctx_id,
99                         struct xdr_buf          *message,
100                         struct xdr_netobj       *mic_token);
101         u32 (*gss_wrap)(
102                         struct gss_ctx          *ctx_id,
103                         int                     offset,
104                         struct xdr_buf          *outbuf,
105                         struct page             **inpages);
106         u32 (*gss_unwrap)(
107                         struct gss_ctx          *ctx_id,
108                         int                     offset,
109                         struct xdr_buf          *buf);
110         void (*gss_delete_sec_context)(
111                         void                    *internal_ctx_id);
112 };
113
114 int gss_mech_register(struct gss_api_mech *);
115 void gss_mech_unregister(struct gss_api_mech *);
116
117 /* returns a mechanism descriptor given an OID, and increments the mechanism's
118  * reference count. */
119 struct gss_api_mech * gss_mech_get_by_OID(struct xdr_netobj *);
120
121 /* Returns a reference to a mechanism, given a name like "krb5" etc. */
122 struct gss_api_mech *gss_mech_get_by_name(const char *);
123
124 /* Similar, but get by pseudoflavor. */
125 struct gss_api_mech *gss_mech_get_by_pseudoflavor(u32);
126
127 /* Just increments the mechanism's reference count and returns its input: */
128 struct gss_api_mech * gss_mech_get(struct gss_api_mech *);
129
130 /* For every successful gss_mech_get or gss_mech_get_by_* call there must be a
131  * corresponding call to gss_mech_put. */
132 void gss_mech_put(struct gss_api_mech *);
133
134 #endif /* __KERNEL__ */
135 #endif /* _LINUX_SUNRPC_GSS_API_H */
136