diff options
Diffstat (limited to 'sunrpc/xdr_stdio.c')
| -rw-r--r-- | sunrpc/xdr_stdio.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/sunrpc/xdr_stdio.c b/sunrpc/xdr_stdio.c new file mode 100644 index 0000000000..694774f6f6 --- /dev/null +++ b/sunrpc/xdr_stdio.c @@ -0,0 +1,189 @@ +/* @(#)xdr_stdio.c 2.1 88/07/29 4.0 RPCSRC */ +/* + * Sun RPC is a product of Sun Microsystems, Inc. and is provided for + * unrestricted use provided that this legend is included on all tape + * media and as a part of the software program in whole or part. Users + * may copy or modify Sun RPC without charge, but are not authorized + * to license or distribute it to anyone else except as part of a product or + * program developed by the user. + * + * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE + * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR + * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. + * + * Sun RPC is provided with no support and without any obligation on the + * part of Sun Microsystems, Inc. to assist in its use, correction, + * modification or enhancement. + * + * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE + * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC + * OR ANY PART THEREOF. + * + * In no event will Sun Microsystems, Inc. be liable for any lost revenue + * or profits or other special, indirect and consequential damages, even if + * Sun has been advised of the possibility of such damages. + * + * Sun Microsystems, Inc. + * 2550 Garcia Avenue + * Mountain View, California 94043 + */ +#if !defined(lint) && defined(SCCSIDS) +static char sccsid[] = "@(#)xdr_stdio.c 1.16 87/08/11 Copyr 1984 Sun Micro"; +#endif + +/* + * xdr_stdio.c, XDR implementation on standard i/o file. + * + * Copyright (C) 1984, Sun Microsystems, Inc. + * + * 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 <rpc/types.h> +#include <stdio.h> +#include <rpc/xdr.h> + +static bool_t xdrstdio_getlong(); +static bool_t xdrstdio_putlong(); +static bool_t xdrstdio_getbytes(); +static bool_t xdrstdio_putbytes(); +static u_int xdrstdio_getpos(); +static bool_t xdrstdio_setpos(); +static long * xdrstdio_inline(); +static void xdrstdio_destroy(); + +/* + * Ops vector for stdio type XDR + */ +static 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) + register XDR *xdrs; + FILE *file; + enum xdr_op op; +{ + + xdrs->x_op = op; + xdrs->x_ops = &xdrstdio_ops; + xdrs->x_private = (caddr_t)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) + register XDR *xdrs; +{ + (void)fflush((FILE *)xdrs->x_private); + /* xx should we close the file ?? */ +}; + +static bool_t +xdrstdio_getlong(xdrs, lp) + XDR *xdrs; + register long *lp; +{ + + if (fread((caddr_t)lp, sizeof(long), 1, (FILE *)xdrs->x_private) != 1) + return (FALSE); +#ifndef mc68000 + *lp = ntohl(*lp); +#endif + return (TRUE); +} + +static bool_t +xdrstdio_putlong(xdrs, lp) + XDR *xdrs; + long *lp; +{ + +#ifndef mc68000 + long mycopy = htonl(*lp); + lp = &mycopy; +#endif + if (fwrite((caddr_t)lp, sizeof(long), 1, (FILE *)xdrs->x_private) != 1) + return (FALSE); + return (TRUE); +} + +static bool_t +xdrstdio_getbytes(xdrs, addr, len) + XDR *xdrs; + caddr_t addr; + u_int len; +{ + + if ((len != 0) && (fread(addr, (int)len, 1, (FILE *)xdrs->x_private) != 1)) + return (FALSE); + return (TRUE); +} + +static bool_t +xdrstdio_putbytes(xdrs, addr, len) + XDR *xdrs; + caddr_t addr; + u_int len; +{ + + if ((len != 0) && (fwrite(addr, (int)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); +} + +static long * +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); +} |