On Fri, Nov 6, 2020 at 3:14 AM Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx> wrote: > > On Thu, Nov 05, 2020 at 10:58:26PM +0000, KP Singh wrote: > > + > > + ret = copy_file_range(fd_in, NULL, fd_out, NULL, stat.st_size, 0); > > centos7 glibc doesn't have it. > > /prog_tests/test_local_storage.c:59:8: warning: implicit declaration of function ‘copy_file_range’; did you mean ‘sync_file_range’? [-Wimplicit-function-declaration] > 59 | ret = copy_file_range(fd_in, NULL, fd_out, NULL, stat.st_size, 0); > | ^~~~~~~~~~~~~~~ > | sync_file_range > BINARY test_progs > BINARY test_progs-no_alu32 > ld: test_local_storage.test.o: in function `copy_rm': > test_local_storage.c:59: undefined reference to `copy_file_range' > > Could you use something else or wrap it similar to pidfd_open ? Sure, I created a wrapper similar to pidfd_open and sent out a v6.
