1 /* Stub for copy_file_range 2 Copyright 2019-2021 Free Software Foundation, Inc. 3 4 This file is free software: you can redistribute it and/or modify 5 it under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 2.1 of the 7 License, or (at your option) any later version. 8 9 This file 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 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser 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 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 }