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7a30cb83 | 1 | /* Selective file content synch'ing. |
0f53d140 | 2 | Copyright (C) 2006, 2007, 2011 Free Software Foundation, Inc. |
7a30cb83 DJ |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
7a30cb83 DJ |
18 | |
19 | #include <errno.h> | |
20 | #include <fcntl.h> | |
21 | #include <sys/types.h> | |
22 | ||
0f53d140 | 23 | #include <sysdep-cancel.h> |
7a30cb83 DJ |
24 | #include <sys/syscall.h> |
25 | ||
26 | ||
27 | #ifdef __NR_sync_file_range | |
28 | int | |
29 | sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags) | |
30 | { | |
0f53d140 JM |
31 | if (SINGLE_THREAD_P) |
32 | return INLINE_SYSCALL (sync_file_range, 7, fd, 0, | |
33 | __LONG_LONG_PAIR ((long) (from >> 32), (long) from), | |
34 | __LONG_LONG_PAIR ((long) (to >> 32), (long) to), | |
35 | flags); | |
36 | ||
37 | int result; | |
38 | int oldtype = LIBC_CANCEL_ASYNC (); | |
39 | ||
40 | result = INLINE_SYSCALL (sync_file_range, 7, fd, 0, | |
41 | __LONG_LONG_PAIR ((long) (from >> 32), (long) from), | |
42 | __LONG_LONG_PAIR ((long) (to >> 32), (long) to), | |
43 | flags); | |
44 | ||
45 | LIBC_CANCEL_RESET (oldtype); | |
46 | ||
47 | return result; | |
7a30cb83 DJ |
48 | } |
49 | #else | |
50 | int | |
51 | sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags) | |
52 | { | |
53 | __set_errno (ENOSYS); | |
54 | return -1; | |
55 | } | |
56 | stub_warning (sync_file_range) | |
7a30cb83 | 57 | #endif |