include: <fcntl.h>
include: <errno.h>
fiu name base: linux/io/
# sync_file_range() is linux-only
v: #ifdef __linux__
int sync_file_range(int fd, off64_t offset, off64_t nbytes, \
unsigned int flags);
on error: -1
valid errnos: EBADF EINVAL EIO ENOMEM ENOSPC
v: #endif