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748876bf | 1 | /* Copyright (C) 2007, 2009, 2011 Free Software Foundation, Inc. |
749f5cc9 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 | |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
18 | ||
f9a7bd53 | 19 | #include <errno.h> |
749f5cc9 | 20 | #include <fcntl.h> |
748876bf | 21 | #include <sysdep-cancel.h> |
749f5cc9 UD |
22 | |
23 | ||
24 | extern int __call_fallocate (int fd, int mode, __off64_t offset, __off64_t len) | |
25 | attribute_hidden; | |
26 | ||
27 | ||
28 | /* Reserve storage for the data of the file associated with FD. */ | |
29 | int | |
30 | fallocate (int fd, int mode, __off_t offset, __off_t len) | |
31 | { | |
f9a7bd53 | 32 | #ifdef __NR_fallocate |
748876bf UD |
33 | int err; |
34 | if (SINGLE_THREAD_P) | |
35 | err = __call_fallocate (fd, mode, offset, len); | |
36 | else | |
37 | { | |
38 | int oldtype = LIBC_CANCEL_ASYNC (); | |
39 | ||
40 | err = __call_fallocate (fd, mode, offset, len); | |
41 | ||
42 | LIBC_CANCEL_RESET (oldtype); | |
43 | } | |
de240a05 AS |
44 | if (__builtin_expect (err, 0)) |
45 | { | |
46 | __set_errno (err); | |
47 | err = -1; | |
48 | } | |
49 | return err; | |
f9a7bd53 MF |
50 | #else |
51 | __set_errno (ENOSYS); | |
52 | return -1; | |
53 | #endif | |
749f5cc9 | 54 | } |