2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License, Version 1.0 only
2N/A * (the "License"). You may not use this file except in compliance
2N/A * with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A/*
2N/A * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A#include <unistd.h>
2N/A#include <sys/stat.h>
2N/A#include <fcntl.h>
2N/A
2N/A#include "wbio.h"
2N/A
2N/A/*
2N/A * Write `buflen' bytes from `buffer' to the file represented by `fd'.
2N/A * Returns -1 if all `buflen' bytes cannot be written, otherwise returns 0.
2N/A */
2N/Aint
2N/Awbio_nwrite(int fd, const void *buffer, size_t buflen)
2N/A{
2N/A size_t nwritten;
2N/A ssize_t nbytes;
2N/A const char *buf = buffer;
2N/A
2N/A for (nwritten = 0; nwritten < buflen; nwritten += nbytes) {
2N/A nbytes = write(fd, &buf[nwritten], buflen - nwritten);
2N/A if (nbytes <= 0)
2N/A return (-1);
2N/A }
2N/A
2N/A return (0);
2N/A}
2N/A
2N/A/*
2N/A * Read `buflen' bytes into `buffer' from the file represented by `fd'.
2N/A * Returns -1 if all `buflen' bytes cannot be read, otherwise returns 0.
2N/A */
2N/Aint
2N/Awbio_nread(int fd, void *buffer, size_t buflen)
2N/A{
2N/A size_t nread;
2N/A ssize_t nbytes;
2N/A char *buf = buffer;
2N/A
2N/A for (nread = 0; nread < buflen; nread += nbytes) {
2N/A nbytes = read(fd, &buf[nread], buflen - nread);
2N/A if (nbytes <= 0)
2N/A return (-1);
2N/A }
2N/A
2N/A return (0);
2N/A}
2N/A
2N/A/*
2N/A * Read a random number of `buflen' bytes into `buffer' from /dev/urandom.
2N/A * Returns -1 if all `buflen' bytes cannot be read, otherwise returns 0.
2N/A */
2N/Aint
2N/Awbio_nread_rand(void *buffer, size_t buflen)
2N/A{
2N/A int fd;
2N/A
2N/A if ((fd = open("/dev/urandom", O_RDONLY)) == -1) {
2N/A return (-1);
2N/A }
2N/A
2N/A if (wbio_nread(fd, buffer, buflen) != 0) {
2N/A (void) close(fd);
2N/A return (-1);
2N/A }
2N/A
2N/A (void) close(fd);
2N/A return (0);
2N/A}