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 (the "License").
2N/A * You may not use this file except in compliance 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/*
2N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A#include "lint.h"
2N/A#include <fcntl.h>
2N/A#include <sys/types.h>
2N/A#include <sys/stat.h>
2N/A#include <errno.h>
2N/A
2N/A/*
2N/A * SUSv3 - file advisory information
2N/A *
2N/A * This function does nothing, but that's OK because the
2N/A * Posix specification doesn't require it to do anything
2N/A * other than return appropriate error numbers.
2N/A *
2N/A * In the future, a file system dependent fadvise() or fcntl()
2N/A * interface, similar to madvise(), should be developed to enable
2N/A * the kernel to optimize I/O operations based on the given advice.
2N/A */
2N/A
2N/A/* ARGSUSED1 */
2N/Aint
2N/Aposix_fadvise(int fd, off_t offset, off_t len, int advice)
2N/A{
2N/A struct stat64 statb;
2N/A
2N/A switch (advice) {
2N/A case POSIX_FADV_NORMAL:
2N/A case POSIX_FADV_RANDOM:
2N/A case POSIX_FADV_SEQUENTIAL:
2N/A case POSIX_FADV_WILLNEED:
2N/A case POSIX_FADV_DONTNEED:
2N/A case POSIX_FADV_NOREUSE:
2N/A break;
2N/A default:
2N/A return (EINVAL);
2N/A }
2N/A if (len < 0)
2N/A return (EINVAL);
2N/A if (fstat64(fd, &statb) != 0)
2N/A return (EBADF);
2N/A if (S_ISFIFO(statb.st_mode))
2N/A return (ESPIPE);
2N/A return (0);
2N/A}
2N/A
2N/A#if !defined(_LP64)
2N/A
2N/A/* ARGSUSED1 */
2N/Aint
2N/Aposix_fadvise64(int fd, off64_t offset, off64_t len, int advice)
2N/A{
2N/A struct stat64 statb;
2N/A
2N/A switch (advice) {
2N/A case POSIX_FADV_NORMAL:
2N/A case POSIX_FADV_RANDOM:
2N/A case POSIX_FADV_SEQUENTIAL:
2N/A case POSIX_FADV_WILLNEED:
2N/A case POSIX_FADV_DONTNEED:
2N/A case POSIX_FADV_NOREUSE:
2N/A break;
2N/A default:
2N/A return (EINVAL);
2N/A }
2N/A if (len < 0)
2N/A return (EINVAL);
2N/A if (fstat64(fd, &statb) != 0)
2N/A return (EBADF);
2N/A if (S_ISFIFO(statb.st_mode))
2N/A return (ESPIPE);
2N/A return (0);
2N/A}
2N/A
2N/A#endif