1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * linux/include/linux/sunrpc/auth_gss.h 4 * 5 * Declarations for RPCSEC_GSS 6 * 7 * Dug Song <dugsong@monkey.org> 8 * Andy Adamson <andros@umich.edu> 9 * Bruce Fields <bfields@umich.edu> 10 * Copyright (c) 2000 The Regents of the University of Michigan 11 */ 12 13 #ifndef _LINUX_SUNRPC_AUTH_GSS_H 14 #define _LINUX_SUNRPC_AUTH_GSS_H 15 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 u32 gc_seq_xmit; 73 spinlock_t gc_seq_lock; 74 struct gss_ctx *gc_gss_ctx; 75 struct xdr_netobj gc_wire_ctx; 76 struct xdr_netobj gc_acceptor; 77 u32 gc_win; 78 unsigned long gc_expiry; 79 struct rcu_head gc_rcu; 80 }; 81 82 struct gss_upcall_msg; 83 struct gss_cred { 84 struct rpc_cred gc_base; 85 enum rpc_gss_svc gc_service; 86 struct gss_cl_ctx __rcu *gc_ctx; 87 struct gss_upcall_msg *gc_upcall; 88 const char *gc_principal; 89 unsigned long gc_upcall_timestamp; 90 }; 91 92 #endif /* _LINUX_SUNRPC_AUTH_GSS_H */ 93 94
