copy_file_range: New function to copy file data

The semantics are based on the Linux system call, but a very close
emulation in user space is provided.

1 files changed, 3 insertions, 0 deletions

diff --git a/io/Versions b/io/Versions
index 64316cd025..98898cb9d5 100644
--- a/io/Versions
+++ b/io/Versions
@@ -125,4 +125,7 @@ libc {
   GLIBC_2.23 {
     fts64_children; fts64_close; fts64_open; fts64_read; fts64_set;
   }
+  GLIBC_2.27 {
+    copy_file_range;
+  }
 }