1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/cstdlib/LSTDIO/FWRITE.C	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,97 @@
     1.4 +/* FWRITE.C
     1.5 + * 
     1.6 + * Portions Copyright (c) 1990-2005 Nokia Corporation and/or its subsidiary(-ies).
     1.7 + * All rights reserved.
     1.8 + */
     1.9 +
    1.10 +/*
    1.11 + * Copyright (c) 1990 The Regents of the University of California.
    1.12 + * All rights reserved.
    1.13 + *
    1.14 + * Redistribution and use in source and binary forms are permitted
    1.15 + * provided that the above copyright notice and this paragraph are
    1.16 + * duplicated in all such forms and that any documentation,
    1.17 + * advertising materials, and other materials related to such
    1.18 + * distribution and use acknowledge that the software was developed
    1.19 + * by the University of California, Berkeley.  The name of the
    1.20 + * University may not be used to endorse or promote products derived
    1.21 + * from this software without specific prior written permission.
    1.22 + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
    1.23 + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
    1.24 + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    1.25 + */
    1.26 +
    1.27 +/*
    1.28 +FUNCTION
    1.29 +<<fwrite>>---write array elements
    1.30 +
    1.31 +INDEX
    1.32 +	fwrite
    1.33 +
    1.34 +ANSI_SYNOPSIS
    1.35 +	#include <stdio.h>
    1.36 +	size_t fwrite(const void *<[buf]>, size_t <[size]>,
    1.37 +		      size_t <[count]>, FILE *<[fp]>);
    1.38 +
    1.39 +TRAD_SYNOPSIS
    1.40 +	#include <stdio.h>
    1.41 +	size_t fwrite(<[buf]>, <[size]>, <[count]>, <[fp]>)
    1.42 +	char *<[buf]>;
    1.43 +	size_t <[size]>;
    1.44 +	size_t <[count]>;
    1.45 +	FILE *<[fp]>;
    1.46 +
    1.47 +DESCRIPTION
    1.48 +<<fwrite>> attempts to copy, starting from the memory location
    1.49 +<[buf]>, <[count]> elements (each of size <[size]>) into the file or
    1.50 +stream identified by <[fp]>.  <<fwrite>> may copy fewer elements than
    1.51 +<[count]> if an error intervenes.
    1.52 +
    1.53 +<<fwrite>> also advances the file position indicator (if any) for
    1.54 +<[fp]> by the number of @emph{characters} actually written.
    1.55 +
    1.56 +RETURNS
    1.57 +If <<fwrite>> succeeds in writing all the elements you specify, the
    1.58 +result is the same as the argument <[count]>.  In any event, the
    1.59 +result is the number of complete elements that <<fwrite>> copied to
    1.60 +the file.
    1.61 +
    1.62 +PORTABILITY
    1.63 +ANSI C requires <<fwrite>>.
    1.64 +
    1.65 +Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
    1.66 +<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
    1.67 +*/
    1.68 +
    1.69 +#include <stdio.h>
    1.70 +#include <string.h>
    1.71 +#include "LOCAL.H"
    1.72 +#include "FVWRITE.H"
    1.73 +
    1.74 +/*
    1.75 + * Write `count' objects (each size `size') from memory to the given file.
    1.76 + * Return the number of whole objects written.
    1.77 + */
    1.78 +
    1.79 +EXPORT_C size_t
    1.80 +fwrite (const void *buf, size_t size, size_t count, FILE * fp)
    1.81 +{
    1.82 +  size_t n;
    1.83 +  struct __suio uio;
    1.84 +  struct __siov iov;
    1.85 +
    1.86 +  iov.iov_base = buf;
    1.87 +  uio.uio_resid = iov.iov_len = n = count * size;
    1.88 +  uio.uio_iov = &iov;
    1.89 +  uio.uio_iovcnt = 1;
    1.90 +
    1.91 +  /*
    1.92 +   * The usual case is success (__sfvwrite returns 0);
    1.93 +   * skip the divide if this happens, since divides are
    1.94 +   * generally slow and since this occurs whenever size==0.
    1.95 +   */
    1.96 +
    1.97 +  if (__sfvwrite (fp, &uio) == 0)
    1.98 +    return count;
    1.99 +  return (n - uio.uio_resid) / size;
   1.100 +}