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f7a9f785 | 1 | /* Copyright (C) 2003-2016 Free Software Foundation, Inc. |
5cd09cd6 UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
5cd09cd6 UD |
17 | |
18 | #include <errno.h> | |
19 | #include <fcntl.h> | |
20 | #include <sysdep.h> | |
21 | ||
22 | /* Advice the system about the expected behaviour of the application with | |
23 | respect to the file associated with FD. */ | |
24 | ||
25 | int | |
bfef9264 | 26 | posix_fadvise (int fd, off_t offset, off_t len, int advise) |
5cd09cd6 | 27 | { |
e933a943 | 28 | #if defined(__NR_fadvise64) || defined(__NR_fadvise64_64) |
137ffcdc | 29 | INTERNAL_SYSCALL_DECL (err); |
e933a943 | 30 | # ifdef __NR_fadvise64 |
137ffcdc UD |
31 | int ret = INTERNAL_SYSCALL (fadvise64, err, 5, fd, |
32 | __LONG_LONG_PAIR (offset >> 31, offset), len, | |
33 | advise); | |
e933a943 MF |
34 | # else |
35 | int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, | |
36 | __LONG_LONG_PAIR ((long) (offset >> 31), | |
37 | (long) offset), | |
38 | __LONG_LONG_PAIR ((long) (len >> 31), | |
39 | (long) len), | |
40 | advise); | |
41 | # endif | |
137ffcdc UD |
42 | if (INTERNAL_SYSCALL_ERROR_P (ret, err)) |
43 | return INTERNAL_SYSCALL_ERRNO (ret, err); | |
44 | return 0; | |
5cd09cd6 | 45 | #else |
137ffcdc | 46 | return ENOSYS; |
5cd09cd6 UD |
47 | #endif |
48 | } |