/*
** cpydata.c -- copy all data from one fd to another
**
** This code is Copyright (c) 2002, by the authors of nmh.  See the
** COPYRIGHT file in the root directory of the nmh distribution for
** complete copyright information.
*/

#include <sysexits.h>
#include <unistd.h>
#include <h/mh.h>

void
cpydata(int in, int out, char *ifile, char *ofile)
{
	int i;
	char buffer[BUFSIZ];

	while ((i = read(in, buffer, sizeof(buffer))) > 0) {
		if (write(out, buffer, i) != i)
			adios(EX_IOERR, ofile, "error writing");
	}

	if (i == -1)
		adios(EX_IOERR, ifile, "error reading");
}
