include/linux/sunrpc/auth_gss.h

   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
  24 enum 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
  31 enum 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: */
  38 struct 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: */
  47 struct 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 */
  53 struct 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
  67 struct 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 __rcu    *gc_gss_ctx;
  73         struct xdr_netobj       gc_wire_ctx;
  74         u32                     gc_win;
  75         unsigned long           gc_expiry;
  76         struct rcu_head         gc_rcu;
  77 };
  78
  79 struct gss_upcall_msg;
  80 struct gss_cred {
  81         struct rpc_cred         gc_base;
  82         enum rpc_gss_svc        gc_service;
  83         struct gss_cl_ctx __rcu *gc_ctx;
  84         struct gss_upcall_msg   *gc_upcall;
  85         unsigned long           gc_upcall_timestamp;
  86         unsigned char           gc_machine_cred : 1;
  87 };
  88
  89 #endif /* __KERNEL__ */
  90 #endif /* _LINUX_SUNRPC_AUTH_GSS_H */
  91