LXR linux/include/linux/sunrpc/auth

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