1 /* Stub for copy_file_range
2 Copyright 2019-2020 Free Software Foundation, Inc.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 This program 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
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 #include <config.h>
18
19 #include <unistd.h>
20
21 #include <errno.h>
22
23 ssize_t
copy_file_range(int infd,off_t * pinoff,int outfd,off_t * poutoff,size_t length,unsigned int flags)24 copy_file_range (int infd, off_t *pinoff,
25 int outfd, off_t *poutoff,
26 size_t length, unsigned int flags)
27 {
28 /* There is little need to emulate copy_file_range with read+write,
29 since programs that use copy_file_range must fall back on
30 read+write anyway. */
31 errno = ENOSYS;
32 return -1;
33 }
34