1019c3c43Sraf /*
2019c3c43Sraf * CDDL HEADER START
3019c3c43Sraf *
4019c3c43Sraf * The contents of this file are subject to the terms of the
5019c3c43Sraf * Common Development and Distribution License (the "License").
6019c3c43Sraf * You may not use this file except in compliance with the License.
7019c3c43Sraf *
8019c3c43Sraf * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9019c3c43Sraf * or http://www.opensolaris.org/os/licensing.
10019c3c43Sraf * See the License for the specific language governing permissions
11019c3c43Sraf * and limitations under the License.
12019c3c43Sraf *
13019c3c43Sraf * When distributing Covered Code, include this CDDL HEADER in each
14019c3c43Sraf * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15019c3c43Sraf * If applicable, add the following below this CDDL HEADER, with the
16019c3c43Sraf * fields enclosed by brackets "[]" replaced with your own identifying
17019c3c43Sraf * information: Portions Copyright [yyyy] [name of copyright owner]
18019c3c43Sraf *
19019c3c43Sraf * CDDL HEADER END
20019c3c43Sraf */
21019c3c43Sraf
22019c3c43Sraf /*
23019c3c43Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24019c3c43Sraf * Use is subject to license terms.
25019c3c43Sraf */
26019c3c43Sraf
27019c3c43Sraf #include "lint.h"
28019c3c43Sraf #include <fcntl.h>
29019c3c43Sraf #include <sys/types.h>
30019c3c43Sraf #include <sys/stat.h>
31019c3c43Sraf #include <errno.h>
32019c3c43Sraf
33019c3c43Sraf /*
34019c3c43Sraf * SUSv3 - file advisory information
35019c3c43Sraf *
36019c3c43Sraf * This function does nothing, but that's OK because the
37019c3c43Sraf * Posix specification doesn't require it to do anything
38019c3c43Sraf * other than return appropriate error numbers.
39019c3c43Sraf *
40019c3c43Sraf * In the future, a file system dependent fadvise() or fcntl()
41019c3c43Sraf * interface, similar to madvise(), should be developed to enable
42019c3c43Sraf * the kernel to optimize I/O operations based on the given advice.
43019c3c43Sraf */
44019c3c43Sraf
45019c3c43Sraf int
posix_fadvise(int fd,off_t offset __unused,off_t len,int advice)46*4a38094cSToomas Soome posix_fadvise(int fd, off_t offset __unused, off_t len, int advice)
47019c3c43Sraf {
48019c3c43Sraf struct stat64 statb;
49019c3c43Sraf
50019c3c43Sraf switch (advice) {
51019c3c43Sraf case POSIX_FADV_NORMAL:
52019c3c43Sraf case POSIX_FADV_RANDOM:
53019c3c43Sraf case POSIX_FADV_SEQUENTIAL:
54019c3c43Sraf case POSIX_FADV_WILLNEED:
55019c3c43Sraf case POSIX_FADV_DONTNEED:
56019c3c43Sraf case POSIX_FADV_NOREUSE:
57019c3c43Sraf break;
58019c3c43Sraf default:
59019c3c43Sraf return (EINVAL);
60019c3c43Sraf }
61019c3c43Sraf if (len < 0)
62019c3c43Sraf return (EINVAL);
63019c3c43Sraf if (fstat64(fd, &statb) != 0)
64019c3c43Sraf return (EBADF);
65019c3c43Sraf if (S_ISFIFO(statb.st_mode))
66019c3c43Sraf return (ESPIPE);
67019c3c43Sraf return (0);
68019c3c43Sraf }
69019c3c43Sraf
70019c3c43Sraf #if !defined(_LP64)
71019c3c43Sraf
72019c3c43Sraf int
posix_fadvise64(int fd,off64_t offset __unused,off64_t len,int advice)73*4a38094cSToomas Soome posix_fadvise64(int fd, off64_t offset __unused, off64_t len, int advice)
74019c3c43Sraf {
75019c3c43Sraf struct stat64 statb;
76019c3c43Sraf
77019c3c43Sraf switch (advice) {
78019c3c43Sraf case POSIX_FADV_NORMAL:
79019c3c43Sraf case POSIX_FADV_RANDOM:
80019c3c43Sraf case POSIX_FADV_SEQUENTIAL:
81019c3c43Sraf case POSIX_FADV_WILLNEED:
82019c3c43Sraf case POSIX_FADV_DONTNEED:
83019c3c43Sraf case POSIX_FADV_NOREUSE:
84019c3c43Sraf break;
85019c3c43Sraf default:
86019c3c43Sraf return (EINVAL);
87019c3c43Sraf }
88019c3c43Sraf if (len < 0)
89019c3c43Sraf return (EINVAL);
90019c3c43Sraf if (fstat64(fd, &statb) != 0)
91019c3c43Sraf return (EBADF);
92019c3c43Sraf if (S_ISFIFO(statb.st_mode))
93019c3c43Sraf return (ESPIPE);
94019c3c43Sraf return (0);
95019c3c43Sraf }
96019c3c43Sraf
97019c3c43Sraf #endif
98