From fa680dc61455acdf8779d82c6f4bba5b48935c08 Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Wed, 15 Nov 2017 18:40:29 +0000
Subject: Add MADV_WIPEONFORK, MADV_KEEPONFORK from Linux 4.14.
This patch adds the new MADV_WIPEONFORK and MADV_KEEPONFORK from Linux
4.14 to bits/mman-linux.h (and bits/mman.h in the hppa case). Note
there are further hppa MADV_* changes in 4.14; I plan a separate glibc
patch for those.
Tested for x86_64.
* sysdeps/unix/sysv/linux/bits/mman-linux.h
[__USE_MISC] (MADV_WIPEONFORK): New macro.
[__USE_MISC] (MADV_KEEPONFORK): Likewise.
* sysdeps/unix/sysv/linux/hppa/bits/mman.h
[__USE_MISC] (MADV_WIPEONFORK): Likewise.
[__USE_MISC] (MADV_KEEPONFORK): Likewise.
---
sysdeps/unix/sysv/linux/bits/mman-linux.h | 2 ++
1 file changed, 2 insertions(+)
(limited to 'sysdeps/unix/sysv/linux/bits/mman-linux.h')
diff --git a/sysdeps/unix/sysv/linux/bits/mman-linux.h b/sysdeps/unix/sysv/linux/bits/mman-linux.h
index b091181..78c07c8 100644
--- a/sysdeps/unix/sysv/linux/bits/mman-linux.h
+++ b/sysdeps/unix/sysv/linux/bits/mman-linux.h
@@ -89,6 +89,8 @@
# define MADV_DONTDUMP 16 /* Explicity exclude from the core dump,
overrides the coredump filter bits. */
# define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag. */
+# define MADV_WIPEONFORK 18 /* Zero memory on fork, child only. */
+# define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK. */
# define MADV_HWPOISON 100 /* Poison a page for testing. */
#endif
--
cgit v1.1