diff options
Diffstat (limited to 'lib/libc/xdr/xdr_stdio.c')
| -rw-r--r-- | lib/libc/xdr/xdr_stdio.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/lib/libc/xdr/xdr_stdio.c b/lib/libc/xdr/xdr_stdio.c new file mode 100644 index 0000000..832b308 --- /dev/null +++ b/lib/libc/xdr/xdr_stdio.c @@ -0,0 +1,196 @@ +/* $NetBSD: xdr_stdio.c,v 1.14 2000/01/22 22:19:19 mycroft Exp $ */ + +/*- + * Copyright (c) 2010, Oracle America, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * * Neither the name of the "Oracle America, Inc." nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char *sccsid2 = "@(#)xdr_stdio.c 1.16 87/08/11 Copyr 1984 Sun Micro"; +static char *sccsid = "@(#)xdr_stdio.c 2.1 88/07/29 4.0 RPCSRC"; +#endif +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * xdr_stdio.c, XDR implementation on standard i/o file. + * + * This set of routines implements a XDR on a stdio stream. + * XDR_ENCODE serializes onto the stream, XDR_DECODE de-serializes + * from the stream. + */ + +#include "namespace.h" +#include <stdio.h> + +#include <arpa/inet.h> +#include <rpc/types.h> +#include <rpc/xdr.h> +#include "un-namespace.h" + +static void xdrstdio_destroy(XDR *); +static bool_t xdrstdio_getlong(XDR *, long *); +static bool_t xdrstdio_putlong(XDR *, const long *); +static bool_t xdrstdio_getbytes(XDR *, char *, u_int); +static bool_t xdrstdio_putbytes(XDR *, const char *, u_int); +static u_int xdrstdio_getpos(XDR *); +static bool_t xdrstdio_setpos(XDR *, u_int); +static int32_t *xdrstdio_inline(XDR *, u_int); + +/* + * Ops vector for stdio type XDR + */ +static const struct xdr_ops xdrstdio_ops = { + xdrstdio_getlong, /* deseraialize a long int */ + xdrstdio_putlong, /* seraialize a long int */ + xdrstdio_getbytes, /* deserialize counted bytes */ + xdrstdio_putbytes, /* serialize counted bytes */ + xdrstdio_getpos, /* get offset in the stream */ + xdrstdio_setpos, /* set offset in the stream */ + xdrstdio_inline, /* prime stream for inline macros */ + xdrstdio_destroy /* destroy stream */ +}; + +/* + * Initialize a stdio xdr stream. + * Sets the xdr stream handle xdrs for use on the stream file. + * Operation flag is set to op. + */ +void +xdrstdio_create(xdrs, file, op) + XDR *xdrs; + FILE *file; + enum xdr_op op; +{ + + xdrs->x_op = op; + xdrs->x_ops = &xdrstdio_ops; + xdrs->x_private = file; + xdrs->x_handy = 0; + xdrs->x_base = 0; +} + +/* + * Destroy a stdio xdr stream. + * Cleans up the xdr stream handle xdrs previously set up by xdrstdio_create. + */ +static void +xdrstdio_destroy(xdrs) + XDR *xdrs; +{ + (void)fflush((FILE *)xdrs->x_private); + /* XXX: should we close the file ?? */ +} + +static bool_t +xdrstdio_getlong(xdrs, lp) + XDR *xdrs; + long *lp; +{ + u_int32_t temp; + + if (fread(&temp, sizeof(int32_t), 1, (FILE *)xdrs->x_private) != 1) + return (FALSE); + *lp = (long)ntohl(temp); + return (TRUE); +} + +static bool_t +xdrstdio_putlong(xdrs, lp) + XDR *xdrs; + const long *lp; +{ + int32_t mycopy = htonl((u_int32_t)*lp); + + if (fwrite(&mycopy, sizeof(int32_t), 1, (FILE *)xdrs->x_private) != 1) + return (FALSE); + return (TRUE); +} + +static bool_t +xdrstdio_getbytes(xdrs, addr, len) + XDR *xdrs; + char *addr; + u_int len; +{ + + if ((len != 0) && (fread(addr, (size_t)len, 1, (FILE *)xdrs->x_private) != 1)) + return (FALSE); + return (TRUE); +} + +static bool_t +xdrstdio_putbytes(xdrs, addr, len) + XDR *xdrs; + const char *addr; + u_int len; +{ + + if ((len != 0) && (fwrite(addr, (size_t)len, 1, + (FILE *)xdrs->x_private) != 1)) + return (FALSE); + return (TRUE); +} + +static u_int +xdrstdio_getpos(xdrs) + XDR *xdrs; +{ + + return ((u_int) ftell((FILE *)xdrs->x_private)); +} + +static bool_t +xdrstdio_setpos(xdrs, pos) + XDR *xdrs; + u_int pos; +{ + + return ((fseek((FILE *)xdrs->x_private, (long)pos, 0) < 0) ? + FALSE : TRUE); +} + +/* ARGSUSED */ +static int32_t * +xdrstdio_inline(xdrs, len) + XDR *xdrs; + u_int len; +{ + + /* + * Must do some work to implement this: must insure + * enough data in the underlying stdio buffer, + * that the buffer is aligned so that we can indirect through a + * long *, and stuff this pointer in xdrs->x_buf. Doing + * a fread or fwrite to a scratch buffer would defeat + * most of the gains to be had here and require storage + * management on this buffer, so we don't do this. + */ + return (NULL); +} |
