misc: Add twalk_r function

The twalk function is very difficult to use in a multi-threaded
program because there is no way to pass external state to the
iterator function.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/misc/Versions b/misc/Versions
index 900e4ffb79..e749582369 100644
--- a/misc/Versions
+++ b/misc/Versions
@@ -158,11 +158,14 @@ libc {
   GLIBC_2.26 {
     preadv2; preadv64v2; pwritev2; pwritev64v2;
   }
+  GLIBC_2.30 {
+    twalk_r;
+  }
   GLIBC_PRIVATE {
     __madvise;
     __mktemp;
     __libc_ifunc_impl_list;
-    __tdelete; __tfind; __tsearch; __twalk;
+    __tdelete; __tfind; __tsearch; __twalk; __twalk_r;
     __mmap; __munmap; __mprotect;
     __sched_get_priority_min; __sched_get_priority_max;
     __libc_allocate_once_slow;