cregit-Linux how code gets into the kernel

Release 4.8 net/sunrpc/auth_gss/gss_rpc_xdr.h

/*
 * GSS Proxy upcall module
 *
 *  Copyright (C) 2012 Simo Sorce <simo@redhat.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _LINUX_GSS_RPC_XDR_H

#define _LINUX_GSS_RPC_XDR_H

#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/xprtsock.h>

#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)

# define RPCDBG_FACILITY	RPCDBG_AUTH
#endif


#define LUCID_OPTION "exported_context_type"

#define LUCID_VALUE  "linux_lucid_v1"

#define CREDS_OPTION "exported_creds_type"

#define CREDS_VALUE  "linux_creds_v1"


typedef struct xdr_netobj gssx_buffer;

typedef struct xdr_netobj utf8string;

typedef struct xdr_netobj gssx_OID;


enum gssx_cred_usage {
	
GSSX_C_INITIATE = 1,
	
GSSX_C_ACCEPT = 2,
	
GSSX_C_BOTH = 3,
};


struct gssx_option {
	
gssx_buffer option;
	
gssx_buffer value;
};


struct gssx_option_array {
	
u32 count;
	
struct gssx_option *data;
};


struct gssx_status {
	
u64 major_status;
	
gssx_OID mech;
	
u64 minor_status;
	
utf8string major_status_string;
	
utf8string minor_status_string;
	
gssx_buffer server_ctx;
	
struct gssx_option_array options;
};


struct gssx_call_ctx {
	
utf8string locale;
	
gssx_buffer server_ctx;
	
struct gssx_option_array options;
};


struct gssx_name_attr {
	
gssx_buffer attr;
	
gssx_buffer value;
	
struct gssx_option_array extensions;
};


struct gssx_name_attr_array {
	
u32 count;
	
struct gssx_name_attr *data;
};


struct gssx_name {
	
gssx_buffer display_name;
};

typedef struct gssx_name gssx_name;


struct gssx_cred_element {
	
gssx_name MN;
	
gssx_OID mech;
	
u32 cred_usage;
	
u64 initiator_time_rec;
	
u64 acceptor_time_rec;
	
struct gssx_option_array options;
};


struct gssx_cred_element_array {
	
u32 count;
	
struct gssx_cred_element *data;
};


struct gssx_cred {
	
gssx_name desired_name;
	
struct gssx_cred_element_array elements;
	
gssx_buffer cred_handle_reference;
	
u32 needs_release;
};


struct gssx_ctx {
	
gssx_buffer exported_context_token;
	
gssx_buffer state;
	
u32 need_release;
	
gssx_OID mech;
	
gssx_name src_name;
	
gssx_name targ_name;
	
u64 lifetime;
	
u64 ctx_flags;
	
u32 locally_initiated;
	
u32 open;
	
struct gssx_option_array options;
};


struct gssx_cb {
	
u64 initiator_addrtype;
	
gssx_buffer initiator_address;
	
u64 acceptor_addrtype;
	
gssx_buffer acceptor_address;
	
gssx_buffer application_data;
};


/* This structure is not defined in the protocol.
 * It is used in the kernel to carry around a big buffer
 * as a set of pages */

struct gssp_in_token {
	
struct page **pages;	/* Array of contiguous pages */
	
unsigned int page_base;	/* Start of page data */
	
unsigned int page_len;	/* Length of page data */
};


struct gssx_arg_accept_sec_context {
	
struct gssx_call_ctx call_ctx;
	
struct gssx_ctx *context_handle;
	
struct gssx_cred *cred_handle;
	
struct gssp_in_token input_token;
	
struct gssx_cb *input_cb;
	
u32 ret_deleg_cred;
	
struct gssx_option_array options;
	
struct page **pages;
	
unsigned int npages;
};


struct gssx_res_accept_sec_context {
	
struct gssx_status status;
	
struct gssx_ctx *context_handle;
	
gssx_buffer *output_token;
	/* struct gssx_cred *delegated_cred_handle; not used in kernel */
	
struct gssx_option_array options;
};




#define gssx_enc_indicate_mechs NULL

#define gssx_dec_indicate_mechs NULL

#define gssx_enc_get_call_context NULL

#define gssx_dec_get_call_context NULL

#define gssx_enc_import_and_canon_name NULL

#define gssx_dec_import_and_canon_name NULL

#define gssx_enc_export_cred NULL

#define gssx_dec_export_cred NULL

#define gssx_enc_import_cred NULL

#define gssx_dec_import_cred NULL

#define gssx_enc_acquire_cred NULL

#define gssx_dec_acquire_cred NULL

#define gssx_enc_store_cred NULL

#define gssx_dec_store_cred NULL

#define gssx_enc_init_sec_context NULL

#define gssx_dec_init_sec_context NULL
void gssx_enc_accept_sec_context(struct rpc_rqst *req,
				 struct xdr_stream *xdr,
				 struct gssx_arg_accept_sec_context *args);
int gssx_dec_accept_sec_context(struct rpc_rqst *rqstp,
				struct xdr_stream *xdr,
				struct gssx_res_accept_sec_context *res);

#define gssx_enc_release_handle NULL

#define gssx_dec_release_handle NULL

#define gssx_enc_get_mic NULL

#define gssx_dec_get_mic NULL

#define gssx_enc_verify NULL

#define gssx_dec_verify NULL

#define gssx_enc_wrap NULL

#define gssx_dec_wrap NULL

#define gssx_enc_unwrap NULL

#define gssx_dec_unwrap NULL

#define gssx_enc_wrap_size_limit NULL

#define gssx_dec_wrap_size_limit NULL

/* non implemented calls are set to 0 size */

#define GSSX_ARG_indicate_mechs_sz 0

#define GSSX_RES_indicate_mechs_sz 0

#define GSSX_ARG_get_call_context_sz 0

#define GSSX_RES_get_call_context_sz 0

#define GSSX_ARG_import_and_canon_name_sz 0

#define GSSX_RES_import_and_canon_name_sz 0

#define GSSX_ARG_export_cred_sz 0

#define GSSX_RES_export_cred_sz 0

#define GSSX_ARG_import_cred_sz 0

#define GSSX_RES_import_cred_sz 0

#define GSSX_ARG_acquire_cred_sz 0

#define GSSX_RES_acquire_cred_sz 0

#define GSSX_ARG_store_cred_sz 0

#define GSSX_RES_store_cred_sz 0

#define GSSX_ARG_init_sec_context_sz 0

#define GSSX_RES_init_sec_context_sz 0


#define GSSX_default_in_call_ctx_sz (4 + 4 + 4 + \
                        8 + sizeof(LUCID_OPTION) + sizeof(LUCID_VALUE) + \
                        8 + sizeof(CREDS_OPTION) + sizeof(CREDS_VALUE))

#define GSSX_default_in_ctx_hndl_sz (4 + 4+8 + 4 + 4 + 6*4 + 6*4 + 8 + 8 + \
                                        4 + 4 + 4)

#define GSSX_default_in_cred_sz 4 
/* we send in no cred_handle */

#define GSSX_default_in_token_sz 4 
/* does *not* include token data */

#define GSSX_default_in_cb_sz 4 
/* we do not use channel bindings */

#define GSSX_ARG_accept_sec_context_sz (GSSX_default_in_call_ctx_sz + \
                                        GSSX_default_in_ctx_hndl_sz + \
                                        GSSX_default_in_cred_sz + \
                                        GSSX_default_in_token_sz + \
                                        GSSX_default_in_cb_sz + \
                                        4 /* no deleg creds boolean */ + \
                                        4) /* empty options */

/* somewhat arbitrary numbers but large enough (we ignore some of the data
 * sent down, but it is part of the protocol so we need enough space to take
 * it in) */

#define GSSX_default_status_sz 8 + 24 + 8 + 256 + 256 + 16 + 4

#define GSSX_max_output_handle_sz 128

#define GSSX_max_oid_sz 16

#define GSSX_max_princ_sz 256

#define GSSX_default_ctx_sz (GSSX_max_output_handle_sz + \
                             16 + 4 + GSSX_max_oid_sz + \
                             2 * GSSX_max_princ_sz + \
                             8 + 8 + 4 + 4 + 4)

#define GSSX_max_output_token_sz 1024
/* grouplist not included; we allocate separate pages for that: */

#define GSSX_max_creds_sz (4 + 4 + 4 /* + NGROUPS_MAX*4 */)

#define GSSX_RES_accept_sec_context_sz (GSSX_default_status_sz + \
                                        GSSX_default_ctx_sz + \
                                        GSSX_max_output_token_sz + \
                                        4 + GSSX_max_creds_sz)


#define GSSX_ARG_release_handle_sz 0

#define GSSX_RES_release_handle_sz 0

#define GSSX_ARG_get_mic_sz 0

#define GSSX_RES_get_mic_sz 0

#define GSSX_ARG_verify_sz 0

#define GSSX_RES_verify_sz 0

#define GSSX_ARG_wrap_sz 0

#define GSSX_RES_wrap_sz 0

#define GSSX_ARG_unwrap_sz 0

#define GSSX_RES_unwrap_sz 0

#define GSSX_ARG_wrap_size_limit_sz 0

#define GSSX_RES_wrap_size_limit_sz 0



#endif /* _LINUX_GSS_RPC_XDR_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
simo sorcesimo sorce69997.22%133.33%
j. bruce fieldsj. bruce fields141.95%133.33%
jeff laytonjeff layton60.83%133.33%
Total719100.00%3100.00%
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