/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2016 Nexenta Systems, Inc. All rights reserved. */ /* * Copyright 2010 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * Portions of this source code were derived from Berkeley * 4.3 BSD under license from the Regents of the University of * California. */ /* * xdr.h, External Data Representation Serialization Routines. * */ #ifndef _RPC_XDR_H #define _RPC_XDR_H #include /* For all ntoh* and hton*() kind of macros */ #include /* For all ntoh* and hton*() kind of macros */ #if !defined(_KERNEL) && !defined(_FAKE_KERNEL) #include /* defines FILE *, used in ANSI C function prototypes */ #else /* _KERNEL */ #include #endif /* _KERNEL */ #ifdef __cplusplus extern "C" { #endif /* * XDR provides a conventional way for converting between C data * types and an external bit-string representation. Library supplied * routines provide for the conversion on built-in C data types. These * routines and utility routines defined here are used to help implement * a type encode/decode routine for each user-defined type. * * Each data type provides a single procedure which takes two arguments: * * bool_t * xdrproc(xdrs, argresp) * XDR *xdrs; * *argresp; * * xdrs is an instance of a XDR handle, to which or from which the data * type is to be converted. argresp is a pointer to the structure to be * converted. The XDR handle contains an operation field which indicates * which of the operations (ENCODE, DECODE * or FREE) is to be performed. * * XDR_DECODE may allocate space if the pointer argresp is null. This * data can be freed with the XDR_FREE operation. * * We write only one procedure per data type to make it easy * to keep the encode and decode procedures for a data type consistent. * In many cases the same code performs all operations on a user defined type, * because all the hard work is done in the component type routines. * decode as a series of calls on the nested data types. */ /* * Xdr operations. XDR_ENCODE causes the type to be encoded into the * stream. XDR_DECODE causes the type to be extracted from the stream. * XDR_FREE can be used to release the space allocated by an XDR_DECODE * request. */ enum xdr_op { XDR_ENCODE = 0, XDR_DECODE = 1, XDR_FREE = 2 }; /* * This is the number of bytes per unit of external data. */ #define BYTES_PER_XDR_UNIT (4) #define RNDUP(x) ((((x) + BYTES_PER_XDR_UNIT - 1) / BYTES_PER_XDR_UNIT) \ * BYTES_PER_XDR_UNIT) /* * The XDR handle. * Contains operation which is being applied to the stream, * an operations vector for the paticular implementation (e.g. see xdr_mem.c), * and two private fields for the use of the particular impelementation. * * PSARC 2003/523 Contract Private Interface * XDR * Changes must be reviewed by Solaris File Sharing * Changes must be communicated to contract-2003-523@sun.com */ typedef struct XDR { enum xdr_op x_op; /* operation; fast additional param */ struct xdr_ops *x_ops; caddr_t x_public; /* users' data */ caddr_t x_private; /* pointer to private data */ caddr_t x_base; /* private used for position info */ int x_handy; /* extra private word */ } XDR; /* * PSARC 2003/523 Contract Private Interface * xdr_ops * Changes must be reviewed by Solaris File Sharing * Changes must be communicated to contract-2003-523@sun.com */ struct xdr_ops { #ifdef __STDC__ #if !defined(_KERNEL) bool_t (*x_getlong)(struct XDR *, long *); /* get a long from underlying stream */ bool_t (*x_putlong)(struct XDR *, long *); /* put a long to " */ #endif /* KERNEL */ bool_t (*x_getbytes)(struct XDR *, caddr_t, int); /* get some bytes from " */ bool_t (*x_putbytes)(struct XDR *, caddr_t, int); /* put some bytes to " */ uint_t (*x_getpostn)(struct XDR *); /* returns bytes off from beginning */ bool_t (*x_setpostn)(struct XDR *, uint_t); /* lets you reposition the stream */ rpc_inline_t *(*x_inline)(struct XDR *, int); /* buf quick ptr to buffered data */ void (*x_destroy)(struct XDR *); /* free privates of this xdr_stream */ bool_t (*x_control)(struct XDR *, int, void *); #if defined(_LP64) || defined(_KERNEL) bool_t (*x_getint32)(struct XDR *, int32_t *); /* get a int from underlying stream */ bool_t (*x_putint32)(struct XDR *, int32_t *); /* put an int to " */ #endif /* _LP64 || _KERNEL */ #else #if !defined(_KERNEL) bool_t (*x_getlong)(); /* get a long from underlying stream */ bool_t (*x_putlong)(); /* put a long to " */ #endif /* KERNEL */ bool_t (*x_getbytes)(); /* get some bytes from " */ bool_t (*x_putbytes)(); /* put some bytes to " */ uint_t (*x_getpostn)(); /* returns bytes off from beginning */ bool_t (*x_setpostn)(); /* lets you reposition the stream */ rpc_inline_t *(*x_inline)(); /* buf quick ptr to buffered data */ void (*x_destroy)(); /* free privates of this xdr_stream */ bool_t (*x_control)(); #if defined(_LP64) || defined(_KERNEL) bool_t (*x_getint32)(); bool_t (*x_putint32)(); #endif /* _LP64 || defined(_KERNEL) */ #endif }; /* * Operations defined on a XDR handle * * XDR *xdrs; * long *longp; * caddr_t addr; * uint_t len; * uint_t pos; */ #if !defined(_KERNEL) #define XDR_GETLONG(xdrs, longp) \ (*(xdrs)->x_ops->x_getlong)(xdrs, longp) #define xdr_getlong(xdrs, longp) \ (*(xdrs)->x_ops->x_getlong)(xdrs, longp) #define XDR_PUTLONG(xdrs, longp) \ (*(xdrs)->x_ops->x_putlong)(xdrs, longp) #define xdr_putlong(xdrs, longp) \ (*(xdrs)->x_ops->x_putlong)(xdrs, longp) #endif /* KERNEL */ #if !defined(_LP64) && !defined(_KERNEL) /* * For binary compatability on ILP32 we do not change the shape * of the XDR structure and the GET/PUTINT32 functions just use * the get/putlong vectors which operate on identically-sized * units of data. */ #define XDR_GETINT32(xdrs, int32p) \ (*(xdrs)->x_ops->x_getlong)(xdrs, (long *)int32p) #define xdr_getint32(xdrs, int32p) \ (*(xdrs)->x_ops->x_getlong)(xdrs, (long *)int32p) #define XDR_PUTINT32(xdrs, int32p) \ (*(xdrs)->x_ops->x_putlong)(xdrs, (long *)int32p) #define xdr_putint32(xdrs, int32p) \ (*(xdrs)->x_ops->x_putlong)(xdrs, (long *)int32p) #else /* !_LP64 && !_KERNEL */ #define XDR_GETINT32(xdrs, int32p) \ (*(xdrs)->x_ops->x_getint32)(xdrs, int32p) #define xdr_getint32(xdrs, int32p) \ (*(xdrs)->x_ops->x_getint32)(xdrs, int32p) #define XDR_PUTINT32(xdrs, int32p) \ (*(xdrs)->x_ops->x_putint32)(xdrs, int32p) #define xdr_putint32(xdrs, int32p) \ (*(xdrs)->x_ops->x_putint32)(xdrs, int32p) #endif /* !_LP64 && !_KERNEL */ #define XDR_GETBYTES(xdrs, addr, len) \ (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len) #define xdr_getbytes(xdrs, addr, len) \ (*(xdrs)->x_ops->x_getbytes)(xdrs, addr, len) #define XDR_PUTBYTES(xdrs, addr, len) \ (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len) #define xdr_putbytes(xdrs, addr, len) \ (*(xdrs)->x_ops->x_putbytes)(xdrs, addr, len) #define XDR_GETPOS(xdrs) \ (*(xdrs)->x_ops->x_getpostn)(xdrs) #define xdr_getpos(xdrs) \ (*(xdrs)->x_ops->x_getpostn)(xdrs) #define XDR_SETPOS(xdrs, pos) \ (*(xdrs)->x_ops->x_setpostn)(xdrs, pos) #define xdr_setpos(xdrs, pos) \ (*(xdrs)->x_ops->x_setpostn)(xdrs, pos) #define XDR_INLINE(xdrs, len) \ (*(xdrs)->x_ops->x_inline)(xdrs, len) #define xdr_inline(xdrs, len) \ (*(xdrs)->x_ops->x_inline)(xdrs, len) #define XDR_DESTROY(xdrs) \ (*(xdrs)->x_ops->x_destroy)(xdrs) #define xdr_destroy(xdrs) \ (*(xdrs)->x_ops->x_destroy)(xdrs) #define XDR_CONTROL(xdrs, req, op) \ (*(xdrs)->x_ops->x_control)(xdrs, req, op) #define xdr_control(xdrs, req, op) \ (*(xdrs)->x_ops->x_control)(xdrs, req, op) /* * Support struct for discriminated unions. * You create an array of xdrdiscrim structures, terminated with * a entry with a null procedure pointer. The xdr_union routine gets * the discriminant value and then searches the array of structures * for a matching value. If a match is found the associated xdr routine * is called to handle that part of the union. If there is * no match, then a default routine may be called. * If there is no match and no default routine it is an error. */ /* * A xdrproc_t exists for each data type which is to be encoded or decoded. * * The second argument to the xdrproc_t is a pointer to an opaque pointer. * The opaque pointer generally points to a structure of the data type * to be decoded. If this pointer is 0, then the type routines should * allocate dynamic storage of the appropriate size and return it. * bool_t (*xdrproc_t)(XDR *, void *); */ #ifdef __cplusplus typedef bool_t (*xdrproc_t)(XDR *, void *); #else #ifdef __STDC__ typedef bool_t (*xdrproc_t)(); /* For Backward compatibility */ #else typedef bool_t (*xdrproc_t)(); #endif #endif #define NULL_xdrproc_t ((xdrproc_t)0) #if defined(_LP64) || defined(_I32LPx) #define xdr_rpcvers(xdrs, versp) xdr_u_int(xdrs, versp) #define xdr_rpcprog(xdrs, progp) xdr_u_int(xdrs, progp) #define xdr_rpcproc(xdrs, procp) xdr_u_int(xdrs, procp) #define xdr_rpcprot(xdrs, protp) xdr_u_int(xdrs, protp) #define xdr_rpcport(xdrs, portp) xdr_u_int(xdrs, portp) #else #define xdr_rpcvers(xdrs, versp) xdr_u_long(xdrs, versp) #define xdr_rpcprog(xdrs, progp) xdr_u_long(xdrs, progp) #define xdr_rpcproc(xdrs, procp) xdr_u_long(xdrs, procp) #define xdr_rpcprot(xdrs, protp) xdr_u_long(xdrs, protp) #define xdr_rpcport(xdrs, portp) xdr_u_long(xdrs, portp) #endif struct xdr_discrim { int value; xdrproc_t proc; }; /* * In-line routines for fast encode/decode of primitve data types. * Caveat emptor: these use single memory cycles to get the * data from the underlying buffer, and will fail to operate * properly if the data is not aligned. The standard way to use these * is to say: * if ((buf = XDR_INLINE(xdrs, count)) == NULL) * return (FALSE); * <<< macro calls >>> * where ``count'' is the number of bytes of data occupied * by the primitive data types. * * N.B. and frozen for all time: each data type here uses 4 bytes * of external representation. */ #define IXDR_GET_INT32(buf) ((int32_t)ntohl((uint32_t)*(buf)++)) #define IXDR_PUT_INT32(buf, v) (*(buf)++ = (int32_t)htonl((uint32_t)v)) #define IXDR_GET_U_INT32(buf) ((uint32_t)IXDR_GET_INT32(buf)) #define IXDR_PUT_U_INT32(buf, v) IXDR_PUT_INT32((buf), ((int32_t)(v))) #if !defined(_KERNEL) && !defined(_LP64) #define IXDR_GET_LONG(buf) ((long)ntohl((ulong_t)*(buf)++)) #define IXDR_PUT_LONG(buf, v) (*(buf)++ = (long)htonl((ulong_t)v)) #define IXDR_GET_U_LONG(buf) ((ulong_t)IXDR_GET_LONG(buf)) #define IXDR_PUT_U_LONG(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) #define IXDR_GET_BOOL(buf) ((bool_t)IXDR_GET_LONG(buf)) #define IXDR_GET_ENUM(buf, t) ((t)IXDR_GET_LONG(buf)) #define IXDR_GET_SHORT(buf) ((short)IXDR_GET_LONG(buf)) #define IXDR_GET_U_SHORT(buf) ((ushort_t)IXDR_GET_LONG(buf)) #define IXDR_PUT_BOOL(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) #define IXDR_PUT_ENUM(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) #define IXDR_PUT_SHORT(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) #define IXDR_PUT_U_SHORT(buf, v) IXDR_PUT_LONG((buf), ((long)(v))) #else #define IXDR_GET_BOOL(buf) ((bool_t)IXDR_GET_INT32(buf)) #define IXDR_GET_ENUM(buf, t) ((t)IXDR_GET_INT32(buf)) #define IXDR_GET_SHORT(buf) ((short)IXDR_GET_INT32(buf)) #define IXDR_GET_U_SHORT(buf) ((ushort_t)IXDR_GET_INT32(buf)) #define IXDR_PUT_BOOL(buf, v) IXDR_PUT_INT32((buf), ((int)(v))) #define IXDR_PUT_ENUM(buf, v) IXDR_PUT_INT32((buf), ((int)(v))) #define IXDR_PUT_SHORT(buf, v) IXDR_PUT_INT32((buf), ((int)(v))) #define IXDR_PUT_U_SHORT(buf, v) IXDR_PUT_INT32((buf), ((int)(v))) #endif #ifndef _LITTLE_ENDIAN #define IXDR_GET_HYPER(buf, v) { \ *((int32_t *)(&v)) = ntohl(*(uint32_t *)buf++); \ *((int32_t *)(((char *)&v) + BYTES_PER_XDR_UNIT)) \ = ntohl(*(uint32_t *)buf++); \ } #define IXDR_PUT_HYPER(buf, v) { \ *(buf)++ = (int32_t)htonl(*(uint32_t *) \ ((char *)&v)); \ *(buf)++ = \ (int32_t)htonl(*(uint32_t *)(((char *)&v) \ + BYTES_PER_XDR_UNIT)); \ } #else #define IXDR_GET_HYPER(buf, v) { \ *((int32_t *)(((char *)&v) + \ BYTES_PER_XDR_UNIT)) \ = ntohl(*(uint32_t *)buf++); \ *((int32_t *)(&v)) = \ ntohl(*(uint32_t *)buf++); \ } #define IXDR_PUT_HYPER(buf, v) { \ *(buf)++ = \ (int32_t)htonl(*(uint32_t *)(((char *)&v) + \ BYTES_PER_XDR_UNIT)); \ *(buf)++ = \ (int32_t)htonl(*(uint32_t *)((char *)&v)); \ } #endif #define IXDR_GET_U_HYPER(buf, v) IXDR_GET_HYPER(buf, v) #define IXDR_PUT_U_HYPER(buf, v) IXDR_PUT_HYPER(buf, v) /* * These are the "generic" xdr routines. */ #ifdef __STDC__ extern bool_t xdr_void(void); extern bool_t xdr_int(XDR *, int *); extern bool_t xdr_u_int(XDR *, uint_t *); extern bool_t xdr_long(XDR *, long *); extern bool_t xdr_u_long(XDR *, ulong_t *); extern bool_t xdr_short(XDR *, short *); extern bool_t xdr_u_short(XDR *, ushort_t *); extern bool_t xdr_bool(XDR *, bool_t *); extern bool_t xdr_enum(XDR *, enum_t *); extern bool_t xdr_array(XDR *, caddr_t *, uint_t *, const uint_t, const uint_t, const xdrproc_t); extern bool_t xdr_bytes(XDR *, char **, uint_t *, const uint_t); extern bool_t xdr_opaque(XDR *, caddr_t, const uint_t); extern bool_t xdr_string(XDR *, char **, const uint_t); extern bool_t xdr_union(XDR *, enum_t *, char *, const struct xdr_discrim *, const xdrproc_t); extern bool_t xdr_vector(XDR *, char *, const uint_t, const uint_t, const xdrproc_t); extern unsigned int xdr_sizeof(xdrproc_t, void *); extern bool_t xdr_hyper(XDR *, longlong_t *); extern bool_t xdr_longlong_t(XDR *, longlong_t *); extern bool_t xdr_u_hyper(XDR *, u_longlong_t *); extern bool_t xdr_u_longlong_t(XDR *, u_longlong_t *); extern bool_t xdr_char(XDR *, char *); extern bool_t xdr_u_char(XDR *, uchar_t *); extern bool_t xdr_wrapstring(XDR *, char **); extern bool_t xdr_reference(XDR *, caddr_t *, uint_t, const xdrproc_t); extern bool_t xdr_pointer(XDR *, char **, uint_t, const xdrproc_t); extern void xdr_free(xdrproc_t, char *); extern bool_t xdr_time_t(XDR *, time_t *); extern bool_t xdr_int8_t(XDR *, int8_t *); extern bool_t xdr_uint8_t(XDR *, uint8_t *); extern bool_t xdr_int16_t(XDR *, int16_t *); extern bool_t xdr_uint16_t(XDR *, uint16_t *); extern bool_t xdr_int32_t(XDR *, int32_t *); extern bool_t xdr_uint32_t(XDR *, uint32_t *); #if defined(_INT64_TYPE) extern bool_t xdr_int64_t(XDR *, int64_t *); extern bool_t xdr_uint64_t(XDR *, uint64_t *); #endif #ifndef _KERNEL extern bool_t xdr_float(XDR *, float *); extern bool_t xdr_double(XDR *, double *); extern bool_t xdr_quadruple(XDR *, long double *); #endif /* !_KERNEL */ #else extern bool_t xdr_void(); extern bool_t xdr_int(); extern bool_t xdr_u_int(); extern bool_t xdr_long(); extern bool_t xdr_u_long(); extern bool_t xdr_short(); extern bool_t xdr_u_short(); extern bool_t xdr_bool(); extern bool_t xdr_enum(); extern bool_t xdr_array(); extern bool_t xdr_bytes(); extern bool_t xdr_opaque(); extern bool_t xdr_string(); extern bool_t xdr_union(); extern bool_t xdr_vector(); extern bool_t xdr_hyper(); extern bool_t xdr_longlong_t(); extern bool_t xdr_u_hyper(); extern bool_t xdr_u_longlong_t(); extern bool_t xdr_char(); extern bool_t xdr_u_char(); extern bool_t xdr_reference(); extern bool_t xdr_pointer(); extern void xdr_free(); extern bool_t xdr_wrapstring(); extern bool_t xdr_time_t(); extern bool_t xdr_int8_t(); extern bool_t xdr_uint8_t(); extern bool_t xdr_int16_t(); extern bool_t xdr_uint16_t(); extern bool_t xdr_int32_t(); extern bool_t xdr_uint32_t(); #if defined(_INT64_TYPE) extern bool_t xdr_int64_t(); extern bool_t xdr_uint64_t(); #endif #ifndef _KERNEL extern bool_t xdr_float(); extern bool_t xdr_double(); extern bool_t xdr_quadruple(); #endif /* !_KERNEL */ #endif /* * Common opaque bytes objects used by many rpc protocols; * declared here due to commonality. */ #define MAX_NETOBJ_SZ 1024 struct netobj { uint_t n_len; char *n_bytes; }; typedef struct netobj netobj; #ifdef __STDC__ extern bool_t xdr_netobj(XDR *, netobj *); #else extern bool_t xdr_netobj(); #endif /* * These are XDR control operators */ #define XDR_GET_BYTES_AVAIL 1 struct xdr_bytesrec { bool_t xc_is_last_record; size_t xc_num_avail; }; typedef struct xdr_bytesrec xdr_bytesrec; /* * These are the request arguments to XDR_CONTROL. * * XDR_PEEK - returns the contents of the next XDR unit on the XDR stream. * XDR_SKIPBYTES - skips the next N bytes in the XDR stream. * XDR_RDMAGET - for xdr implementation over RDMA, gets private flags from * the XDR stream being moved over RDMA * XDR_RDMANOCHUNK - for xdr implementaion over RDMA, sets private flags in * the XDR stream moving over RDMA. */ #ifdef _KERNEL #define XDR_PEEK 2 #define XDR_SKIPBYTES 3 #define XDR_RDMA_GET_FLAGS 4 #define XDR_RDMA_SET_FLAGS 5 #define XDR_RDMA_ADD_CHUNK 6 #define XDR_RDMA_GET_CHUNK_LEN 7 #define XDR_RDMA_SET_WLIST 8 #define XDR_RDMA_GET_WLIST 9 #define XDR_RDMA_GET_WCINFO 10 #define XDR_RDMA_GET_RLIST 11 #endif /* * These are the public routines for the various implementations of * xdr streams. */ #if !defined(_KERNEL) && !defined(_FAKE_KERNEL) #ifdef __STDC__ extern void xdrmem_create(XDR *, const caddr_t, const uint_t, const enum xdr_op); /* XDR using memory buffers */ extern void xdrstdio_create(XDR *, FILE *, const enum xdr_op); /* XDR using stdio library */ extern void xdrrec_create(XDR *, const uint_t, const uint_t, const caddr_t, int (*) (void *, caddr_t, int), int (*) (void *, caddr_t, int)); /* XDR pseudo records for tcp */ extern bool_t xdrrec_endofrecord(XDR *, bool_t); /* make end of xdr record */ extern bool_t xdrrec_skiprecord(XDR *); /* move to beginning of next record */ extern bool_t xdrrec_eof(XDR *); extern uint_t xdrrec_readbytes(XDR *, caddr_t, uint_t); /* true if no more input */ #else extern void xdrmem_create(); extern void xdrstdio_create(); extern void xdrrec_create(); extern bool_t xdrrec_endofrecord(); extern bool_t xdrrec_skiprecord(); extern bool_t xdrrec_eof(); extern uint_t xdrrec_readbytes(); #endif #else #define DLEN(mp) (mp->b_cont ? msgdsize(mp) : (mp->b_wptr - mp->b_rptr)) extern void xdrmem_create(XDR *, caddr_t, uint_t, enum xdr_op); extern void xdrmblk_init(XDR *, mblk_t *, enum xdr_op, int); extern bool_t xdrmblk_getmblk(XDR *, mblk_t **, uint_t *); extern bool_t xdrmblk_putmblk(XDR *, mblk_t *, uint_t); extern bool_t xdrmblk_putmblk_raw(XDR *, mblk_t *); extern struct xdr_ops xdrmblk_ops; extern struct xdr_ops xdrrdmablk_ops; extern struct xdr_ops xdrrdma_ops; struct rpc_msg; extern bool_t xdr_callmsg(XDR *, struct rpc_msg *); extern bool_t xdr_replymsg_body(XDR *, struct rpc_msg *); extern bool_t xdr_replymsg_hdr(XDR *, struct rpc_msg *); #endif /* !_KERNEL */ #ifdef __cplusplus } #endif #endif /* !_RPC_XDR_H */