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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include "lint.h"
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
/*
* SUSv3 - file advisory information
*
* This function does nothing, but that's OK because the
* Posix specification doesn't require it to do anything
* other than return appropriate error numbers.
*
* In the future, a file system dependent fadvise() or fcntl()
* interface, similar to madvise(), should be developed to enable
* the kernel to optimize I/O operations based on the given advice.
*/
int
posix_fadvise(int fd, off_t offset __unused, off_t len, int advice)
{
struct stat64 statb;
switch (advice) {
case POSIX_FADV_NORMAL:
case POSIX_FADV_RANDOM:
case POSIX_FADV_SEQUENTIAL:
case POSIX_FADV_WILLNEED:
case POSIX_FADV_DONTNEED:
case POSIX_FADV_NOREUSE:
break;
default:
return (EINVAL);
}
if (len < 0)
return (EINVAL);
if (fstat64(fd, &statb) != 0)
return (EBADF);
if (S_ISFIFO(statb.st_mode))
return (ESPIPE);
return (0);
}
#if !defined(_LP64)
int
posix_fadvise64(int fd, off64_t offset __unused, off64_t len, int advice)
{
struct stat64 statb;
switch (advice) {
case POSIX_FADV_NORMAL:
case POSIX_FADV_RANDOM:
case POSIX_FADV_SEQUENTIAL:
case POSIX_FADV_WILLNEED:
case POSIX_FADV_DONTNEED:
case POSIX_FADV_NOREUSE:
break;
default:
return (EINVAL);
}
if (len < 0)
return (EINVAL);
if (fstat64(fd, &statb) != 0)
return (EBADF);
if (S_ISFIFO(statb.st_mode))
return (ESPIPE);
return (0);
}
#endif
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