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1 /*
2  * linux/include/linux/sunrpc/auth_gss.h
3  *
4  * Declarations for RPCSEC_GSS
5  *
6  * Dug Song <[email protected]>
7  * Andy Adamson <[email protected]>
8  * Bruce Fields <[email protected]>
9  * Copyright (c) 2000 The Regents of the University of Michigan
10  */
11
12 #ifndef _LINUX_SUNRPC_AUTH_GSS_H
13 #define _LINUX_SUNRPC_AUTH_GSS_H
14
15 #ifdef __KERNEL__
16 #include <linux/refcount.h>
17 #include <linux/sunrpc/auth.h>
18 #include <linux/sunrpc/svc.h>
19 #include <linux/sunrpc/gss_api.h>
20
21 #define RPC_GSS_VERSION         1
22
23 #define MAXSEQ 0x80000000 /* maximum legal sequence number, from rfc 2203 */
24
25 enum rpc_gss_proc {
26         RPC_GSS_PROC_DATA = 0,
27         RPC_GSS_PROC_INIT = 1,
28         RPC_GSS_PROC_CONTINUE_INIT = 2,
29         RPC_GSS_PROC_DESTROY = 3
30 };
31
32 enum rpc_gss_svc {
33         RPC_GSS_SVC_NONE = 1,
34         RPC_GSS_SVC_INTEGRITY = 2,
35         RPC_GSS_SVC_PRIVACY = 3
36 };
37
38 /* on-the-wire gss cred: */
39 struct rpc_gss_wire_cred {
40         u32                     gc_v;           /* version */
41         u32                     gc_proc;        /* control procedure */
42         u32                     gc_seq;         /* sequence number */
43         u32                     gc_svc;         /* service */
44         struct xdr_netobj       gc_ctx;         /* context handle */
45 };
46
47 /* on-the-wire gss verifier: */
48 struct rpc_gss_wire_verf {
49         u32                     gv_flavor;
50         struct xdr_netobj       gv_verf;
51 };
52
53 /* return from gss NULL PROC init sec context */
54 struct rpc_gss_init_res {
55         struct xdr_netobj       gr_ctx;         /* context handle */
56         u32                     gr_major;       /* major status */
57         u32                     gr_minor;       /* minor status */
58         u32                     gr_win;         /* sequence window */
59         struct xdr_netobj       gr_token;       /* token */
60 };
61
62 /* The gss_cl_ctx struct holds all the information the rpcsec_gss client
63  * code needs to know about a single security context.  In particular,
64  * gc_gss_ctx is the context handle that is used to do gss-api calls, while
65  * gc_wire_ctx is the context handle that is used to identify the context on
66  * the wire when communicating with a server. */
67
68 struct gss_cl_ctx {
69         refcount_t              count;
70         enum rpc_gss_proc       gc_proc;
71         u32                     gc_seq;
72         spinlock_t              gc_seq_lock;
73         struct gss_ctx          *gc_gss_ctx;
74         struct xdr_netobj       gc_wire_ctx;
75         struct xdr_netobj       gc_acceptor;
76         u32                     gc_win;
77         unsigned long           gc_expiry;
78         struct rcu_head         gc_rcu;
79 };
80
81 struct gss_upcall_msg;
82 struct gss_cred {
83         struct rpc_cred         gc_base;
84         enum rpc_gss_svc        gc_service;
85         struct gss_cl_ctx __rcu *gc_ctx;
86         struct gss_upcall_msg   *gc_upcall;
87         const char              *gc_principal;
88         unsigned long           gc_upcall_timestamp;
89 };
90
91 #endif /* __KERNEL__ */
92 #endif /* _LINUX_SUNRPC_AUTH_GSS_H */
93
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