2 * linux/include/linux/sunrpc/gss_api.h
4 * Somewhat simplified version of the gss api.
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
12 #ifndef _LINUX_SUNRPC_GSS_API_H
13 #define _LINUX_SUNRPC_GSS_API_H
16 #include <linux/sunrpc/xdr.h>
17 #include <linux/sunrpc/msg_prot.h>
18 #include <linux/uio.h>
20 /* The mechanism-independent gss-api context: */
22 struct gss_api_mech *mech_type;
23 void *internal_ctx_id;
26 #define GSS_C_NO_BUFFER ((struct xdr_netobj) 0)
27 #define GSS_C_NO_CONTEXT ((struct gss_ctx *) 0)
29 /*XXX arbitrary length - is this set somewhere? */
30 #define GSS_OID_MAX_LEN 32
31 struct rpcsec_gss_oid {
33 u8 data[GSS_OID_MAX_LEN];
37 struct rpcsec_gss_info {
38 struct rpcsec_gss_oid oid;
43 /* gss-api prototypes; note that these are somewhat simplified versions of
44 * the prototypes specified in RFC 2744. */
45 int gss_import_sec_context(
46 const void* input_token,
48 struct gss_api_mech *mech,
49 struct gss_ctx **ctx_id,
52 struct gss_ctx *ctx_id,
53 struct xdr_buf *message,
54 struct xdr_netobj *mic_token);
56 struct gss_ctx *ctx_id,
57 struct xdr_buf *message,
58 struct xdr_netobj *mic_token);
60 struct gss_ctx *ctx_id,
62 struct xdr_buf *outbuf,
63 struct page **inpages);
65 struct gss_ctx *ctx_id,
67 struct xdr_buf *inbuf);
68 u32 gss_delete_sec_context(
69 struct gss_ctx **ctx_id);
71 u32 gss_svc_to_pseudoflavor(struct gss_api_mech *, u32 service);
72 u32 gss_pseudoflavor_to_service(struct gss_api_mech *, u32 pseudoflavor);
73 char *gss_service_to_auth_domain_name(struct gss_api_mech *, u32 service);
79 char *auth_domain_name;
82 /* Different mechanisms (e.g., krb5 or spkm3) may implement gss-api, and
83 * mechanisms may be dynamically registered or unregistered by modules. */
85 /* Each mechanism is described by the following struct: */
87 struct list_head gm_list;
88 struct module *gm_owner;
89 struct rpcsec_gss_oid gm_oid;
91 const struct gss_api_ops *gm_ops;
92 /* pseudoflavors supported by this mechanism: */
94 struct pf_desc * gm_pfs;
95 /* Should the following be a callback operation instead? */
96 const char *gm_upcall_enctypes;
99 /* and must provide the following operations: */
101 int (*gss_import_sec_context)(
102 const void *input_token,
104 struct gss_ctx *ctx_id,
107 struct gss_ctx *ctx_id,
108 struct xdr_buf *message,
109 struct xdr_netobj *mic_token);
110 u32 (*gss_verify_mic)(
111 struct gss_ctx *ctx_id,
112 struct xdr_buf *message,
113 struct xdr_netobj *mic_token);
115 struct gss_ctx *ctx_id,
117 struct xdr_buf *outbuf,
118 struct page **inpages);
120 struct gss_ctx *ctx_id,
122 struct xdr_buf *buf);
123 void (*gss_delete_sec_context)(
124 void *internal_ctx_id);
127 int gss_mech_register(struct gss_api_mech *);
128 void gss_mech_unregister(struct gss_api_mech *);
130 /* returns a mechanism descriptor given an OID, and increments the mechanism's
131 * reference count. */
132 struct gss_api_mech * gss_mech_get_by_OID(struct xdr_netobj *);
134 /* Returns a reference to a mechanism, given a name like "krb5" etc. */
135 struct gss_api_mech *gss_mech_get_by_name(const char *);
137 /* Similar, but get by pseudoflavor. */
138 struct gss_api_mech *gss_mech_get_by_pseudoflavor(u32);
140 /* Fill in an array with a list of supported pseudoflavors */
141 int gss_mech_list_pseudoflavors(rpc_authflavor_t *, int);
143 /* Just increments the mechanism's reference count and returns its input: */
144 struct gss_api_mech * gss_mech_get(struct gss_api_mech *);
146 /* For every successful gss_mech_get or gss_mech_get_by_* call there must be a
147 * corresponding call to gss_mech_put. */
148 void gss_mech_put(struct gss_api_mech *);
150 #endif /* __KERNEL__ */
151 #endif /* _LINUX_SUNRPC_GSS_API_H */