1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * include/linux/sunrpc/xdr.h 3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> 5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef _SUNRPC_XDR_H_ 8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define _SUNRPC_XDR_H_ 9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __KERNEL__ 11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/uio.h> 13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <asm/byteorder.h> 14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Buffer adjustment 17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XDR_QUADLEN(l) (((l) + 3) >> 2) 19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Generic opaque `network object.' At the kernel level, this type 22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * is used only by lockd. 23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define XDR_MAX_NETOBJ 1024 25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct xdr_netobj { 26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int len; 27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru u8 * data; 28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 31c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This is the generic XDR function. rqstp is either a rpc_rqst (client 32c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * side) or svc_rqst pointer (server side). 33c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Encode functions always assume there's enough room in the buffer. 34c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 35c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef int (*kxdrproc_t)(void *rqstp, u32 *data, void *obj); 36c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 37c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 38c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Basic structure for transmission/reception of a client XDR message. 39c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Features a header (for a linear buffer containing RPC headers 40c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * and the data payload for short messages), and then an array of 41c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * pages. 42c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * The tail iovec allows you to append data after the page array. Its 43c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * main interest is for appending padding to the pages in order to 44c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * satisfy the int_32-alignment requirements in RFC1832. 45c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * 46c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * For the future, we might want to string several of these together 47c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * in a list if anybody wants to make use of NFSv4 COMPOUND 48c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * operations and/or has a need for scatter/gather involving pages. 49c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 50c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct xdr_buf { 51c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct kvec head[1], /* RPC header + non-page data */ 52c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru tail[1]; /* Appended after page data */ 53c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 54c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct page ** pages; /* Array of contiguous pages */ 55c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int page_base, /* Start of page data */ 56c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru page_len; /* Length of page data */ 57c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 58c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int buflen, /* Total length of storage buffer */ 59c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru len; /* Length of XDR encoded message */ 60c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 61c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 62c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 63c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 64c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * pre-xdr'ed macros. 65c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 66c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 67c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define xdr_zero __constant_htonl(0) 68c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define xdr_one __constant_htonl(1) 69c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define xdr_two __constant_htonl(2) 70c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 71c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_success __constant_htonl(RPC_SUCCESS) 72c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_prog_unavail __constant_htonl(RPC_PROG_UNAVAIL) 73c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_prog_mismatch __constant_htonl(RPC_PROG_MISMATCH) 74c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_proc_unavail __constant_htonl(RPC_PROC_UNAVAIL) 75c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_garbage_args __constant_htonl(RPC_GARBAGE_ARGS) 76c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_system_err __constant_htonl(RPC_SYSTEM_ERR) 77c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 78c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_auth_ok __constant_htonl(RPC_AUTH_OK) 79c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_autherr_badcred __constant_htonl(RPC_AUTH_BADCRED) 80c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_autherr_rejectedcred __constant_htonl(RPC_AUTH_REJECTEDCRED) 81c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_autherr_badverf __constant_htonl(RPC_AUTH_BADVERF) 82c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_autherr_rejectedverf __constant_htonl(RPC_AUTH_REJECTEDVERF) 83c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_autherr_tooweak __constant_htonl(RPC_AUTH_TOOWEAK) 84c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpcsec_gsserr_credproblem __constant_htonl(RPCSEC_GSS_CREDPROBLEM) 85c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpcsec_gsserr_ctxproblem __constant_htonl(RPCSEC_GSS_CTXPROBLEM) 86c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define rpc_autherr_oldseqnum __constant_htonl(101) 87c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 88c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 89c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Miscellaneous XDR helper functions 90c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 91c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruu32 * xdr_encode_opaque_fixed(u32 *p, const void *ptr, unsigned int len); 92c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruu32 * xdr_encode_opaque(u32 *p, const void *ptr, unsigned int len); 93c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruu32 * xdr_encode_string(u32 *p, const char *s); 94c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruu32 * xdr_decode_string_inplace(u32 *p, char **sp, int *lenp, int maxlen); 95c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruu32 * xdr_encode_netobj(u32 *p, const struct xdr_netobj *); 96c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruu32 * xdr_decode_netobj(u32 *p, struct xdr_netobj *); 97c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 98c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xdr_encode_pages(struct xdr_buf *, struct page **, unsigned int, 99c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int); 100c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruvoid xdr_inline_pages(struct xdr_buf *, unsigned int, 101c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct page **, unsigned int, unsigned int); 102c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 103c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline u32 *xdr_encode_array(u32 *p, const void *s, unsigned int len) 104c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 105c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return xdr_encode_opaque(p, s, len); 106c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 107c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 108c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 109c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Decode 64bit quantities (NFSv3 support) 110c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 111c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline u32 * 112c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruxdr_encode_hyper(u32 *p, __u64 val) 113c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 114c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *p++ = htonl(val >> 32); 115c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *p++ = htonl(val & 0xFFFFFFFF); 116c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return p; 117c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 118c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 119c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline u32 * 120c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruxdr_decode_hyper(u32 *p, __u64 *valp) 121c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 122c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *valp = ((__u64) ntohl(*p++)) << 32; 123c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru *valp |= ntohl(*p++); 124c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return p; 125c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 126c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 127c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 128c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Adjust kvec to reflect end of xdr'ed data (RPC client XDR) 129c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 130c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustatic inline int 131c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruxdr_adjust_iovec(struct kvec *iov, u32 *p) 132c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru{ 133c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru return iov->iov_len = ((u8 *) p - (u8 *) iov->iov_base); 134c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} 135c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 136c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 137c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * XDR buffer helper functions 138c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 139c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void xdr_shift_buf(struct xdr_buf *, size_t); 140c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void xdr_buf_from_iov(struct kvec *, struct xdr_buf *); 141c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int xdr_buf_subsegment(struct xdr_buf *, struct xdr_buf *, int, int); 142c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int xdr_buf_read_netobj(struct xdr_buf *, struct xdr_netobj *, int); 143c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int read_bytes_from_xdr_buf(struct xdr_buf *, int, void *, int); 144c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int write_bytes_to_xdr_buf(struct xdr_buf *, int, void *, int); 145c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 146c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 147c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Helper structure for copying from an sk_buff. 148c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 149c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef struct { 150c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct sk_buff *skb; 151c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int offset; 152c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru size_t count; 153c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int csum; 154c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru} skb_reader_t; 155c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 156c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef size_t (*skb_read_actor_t)(skb_reader_t *desc, void *to, size_t len); 157c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 158c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int csum_partial_copy_to_xdr(struct xdr_buf *, struct sk_buff *); 159c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern ssize_t xdr_partial_copy_from_skb(struct xdr_buf *, unsigned int, 160c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru skb_reader_t *, skb_read_actor_t); 161c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 162c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int xdr_encode_word(struct xdr_buf *, int, u32); 163c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int xdr_decode_word(struct xdr_buf *, int, u32 *); 164c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 165c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct xdr_array2_desc; 166c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querutypedef int (*xdr_xcode_elem_t)(struct xdr_array2_desc *desc, void *elem); 167c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct xdr_array2_desc { 168c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int elem_size; 169c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int array_len; 170c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int array_maxlen; 171c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru xdr_xcode_elem_t xcode; 172c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 173c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 174c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int xdr_decode_array2(struct xdr_buf *buf, unsigned int base, 175c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct xdr_array2_desc *desc); 176c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int xdr_encode_array2(struct xdr_buf *buf, unsigned int base, 177c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct xdr_array2_desc *desc); 178c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 179c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 180c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * Provide some simple tools for XDR buffer overflow-checking etc. 181c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 182c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct xdr_stream { 183c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru uint32_t *p; /* start of available buffer */ 184c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct xdr_buf *buf; /* XDR buffer to read/write */ 185c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 186c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru uint32_t *end; /* end of available buffer space */ 187c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct kvec *iov; /* pointer to the current kvec */ 188c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 189c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 190c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, uint32_t *p); 191c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern uint32_t *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes); 192c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages, 193c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned int base, unsigned int len); 194c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, uint32_t *p); 195c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern uint32_t *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes); 196c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void xdr_read_pages(struct xdr_stream *xdr, unsigned int len); 197c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len); 198c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 199c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* __KERNEL__ */ 200c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 201c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* _SUNRPC_XDR_H_ */ 202