Add _FORTIFY_SOURCE support for inet_pton

Add function __inet_pton_chk which calls __chk_fail when the size of
argument dst is too small.   inet_pton is redirected to __inet_pton_chk
or __inet_pton_warn when _FORTIFY_SOURCE is > 0.

Also add tests to debug/tst-fortify.c, update the abilist with
__inet_pton_chk and mention inet_pton fortification in maint.texi.

Co-authored-by: Frédéric Bérat <fberat@redhat.com>
Reviewed-by: Florian Weimer <fweimer@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/debug/Versions b/debug/Versions
index 2ae5747f8d..6b9ec1eb46 100644
--- a/debug/Versions
+++ b/debug/Versions
@@ -66,6 +66,7 @@ libc {
   }
   GLIBC_2.42 {
     __inet_ntop_chk;
+    __inet_pton_chk;
   }
   GLIBC_PRIVATE {
     __fortify_fail;