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d4697bc9 | 1 | /* Copyright (C) 2007-2014 Free Software Foundation, Inc. |
a95a608f 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/>. */ | |
a95a608f UD |
17 | |
18 | #include <fcntl.h> | |
19 | #include <kernel-features.h> | |
20 | #include <sysdep.h> | |
21 | ||
22 | #define posix_fallocate static internal_fallocate | |
23 | #include <sysdeps/posix/posix_fallocate.c> | |
24 | #undef posix_fallocate | |
25 | ||
26 | #if !defined __ASSUME_FALLOCATE && defined __NR_fallocate | |
27 | static int __have_fallocate; | |
28 | #endif | |
29 | ||
30 | ||
31 | /* Reserve storage for the data of the file associated with FD. */ | |
32 | int | |
33 | posix_fallocate (int fd, __off_t offset, __off_t len) | |
34 | { | |
35 | #ifdef __NR_fallocate | |
36 | # ifndef __ASSUME_FALLOCATE | |
a1ffb40e | 37 | if (__glibc_likely (__have_fallocate >= 0)) |
a95a608f UD |
38 | # endif |
39 | { | |
40 | INTERNAL_SYSCALL_DECL (err); | |
31a39bd8 L |
41 | # ifdef INTERNAL_SYSCALL_TYPES |
42 | int res = INTERNAL_SYSCALL_TYPES (fallocate, err, 4, int, fd, | |
43 | int, 0, off_t, offset, | |
44 | off_t, len); | |
45 | # else | |
a95a608f | 46 | int res = INTERNAL_SYSCALL (fallocate, err, 4, fd, 0, offset, len); |
31a39bd8 | 47 | # endif |
a95a608f UD |
48 | |
49 | if (! INTERNAL_SYSCALL_ERROR_P (res, err)) | |
50 | return 0; | |
51 | ||
52 | # ifndef __ASSUME_FALLOCATE | |
a1ffb40e | 53 | if (__glibc_unlikely (INTERNAL_SYSCALL_ERRNO (res, err) == ENOSYS)) |
a95a608f UD |
54 | __have_fallocate = -1; |
55 | else | |
56 | # endif | |
57 | if (INTERNAL_SYSCALL_ERRNO (res, err) != EOPNOTSUPP) | |
58 | return INTERNAL_SYSCALL_ERRNO (res, err); | |
59 | } | |
60 | #endif | |
61 | ||
62 | return internal_fallocate (fd, offset, len); | |
63 | } | |
64 | strong_alias (posix_fallocate, posix_fallocate64) |