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git.saurik.com Git - apple/libinfo.git/blob - rpc.subproj/xdr_stdio.c
2 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
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53 #if defined(LIBC_SCCS) && !defined(lint)
54 /*static char *sccsid = "from: @(#)xdr_stdio.c 1.16 87/08/11 Copyr 1984 Sun Micro";*/
55 /*static char *sccsid = "from: @(#)xdr_stdio.c 2.1 88/07/29 4.0 RPCSRC";*/
56 static char *rcsid
= "$Id: xdr_stdio.c,v 1.2 1999/10/14 21:56:55 wsanchez Exp $";
60 * xdr_stdio.c, XDR implementation on standard i/o file.
62 * Copyright (C) 1984, Sun Microsystems, Inc.
64 * This set of routines implements a XDR on a stdio stream.
65 * XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes
69 #include <rpc/types.h>
73 static bool_t
xdrstdio_getlong();
74 static bool_t
xdrstdio_putlong();
75 static bool_t
xdrstdio_getbytes();
76 static bool_t
xdrstdio_putbytes();
77 static u_int
xdrstdio_getpos();
78 static bool_t
xdrstdio_setpos();
79 static long * xdrstdio_inline();
80 static void xdrstdio_destroy();
83 * Ops vector for stdio type XDR
85 static struct xdr_ops xdrstdio_ops
= {
86 xdrstdio_getlong
, /* deseraialize a long int */
87 xdrstdio_putlong
, /* seraialize a long int */
88 xdrstdio_getbytes
, /* deserialize counted bytes */
89 xdrstdio_putbytes
, /* serialize counted bytes */
90 xdrstdio_getpos
, /* get offset in the stream */
91 xdrstdio_setpos
, /* set offset in the stream */
92 xdrstdio_inline
, /* prime stream for inline macros */
93 xdrstdio_destroy
/* destroy stream */
97 * Initialize a stdio xdr stream.
98 * Sets the xdr stream handle xdrs for use on the stream file.
99 * Operation flag is set to op.
102 xdrstdio_create(xdrs
, file
, op
)
109 xdrs
->x_ops
= &xdrstdio_ops
;
110 xdrs
->x_private
= (caddr_t
)file
;
116 * Destroy a stdio xdr stream.
117 * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create.
120 xdrstdio_destroy(xdrs
)
123 (void)fflush((FILE *)xdrs
->x_private
);
124 /* xx should we close the file ?? */
128 xdrstdio_getlong(xdrs
, lp
)
133 if (fread((caddr_t
)lp
, sizeof(long), 1, (FILE *)xdrs
->x_private
) != 1)
142 xdrstdio_putlong(xdrs
, lp
)
148 long mycopy
= htonl(*lp
);
151 if (fwrite((caddr_t
)lp
, sizeof(long), 1, (FILE *)xdrs
->x_private
) != 1)
157 xdrstdio_getbytes(xdrs
, addr
, len
)
163 if ((len
!= 0) && (fread(addr
, (int)len
, 1, (FILE *)xdrs
->x_private
) != 1))
169 xdrstdio_putbytes(xdrs
, addr
, len
)
175 if ((len
!= 0) && (fwrite(addr
, (int)len
, 1, (FILE *)xdrs
->x_private
) != 1))
181 xdrstdio_getpos(xdrs
)
185 return ((u_int
) ftell((FILE *)xdrs
->x_private
));
189 xdrstdio_setpos(xdrs
, pos
)
194 return ((fseek((FILE *)xdrs
->x_private
, (long)pos
, 0) < 0) ?
199 xdrstdio_inline(xdrs
, len
)
205 * Must do some work to implement this: must insure
206 * enough data in the underlying stdio buffer,
207 * that the buffer is aligned so that we can indirect through a
208 * long *, and stuff this pointer in xdrs->x_buf. Doing
209 * a fread or fwrite to a scratch buffer would defeat
210 * most of the gains to be had here and require storage
211 * management on this buffer, so we don't do this.