From: Joseph Myers <joseph@codesourcery.com>
Date: Fri, 26 May 2023 15:04:51 +0000 (+0000)
Subject: Add MFD_NOEXEC_SEAL, MFD_EXEC from Linux 6.3 to bits/mman-shared.h
X-Git-Tag: glibc-2.38~190
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a51f4e2b6668d14a125bdb2abd0fe6b8102eed1;p=thirdparty%2Fglibc.git

Add MFD_NOEXEC_SEAL, MFD_EXEC from Linux 6.3 to bits/mman-shared.h

Linux 6.3 adds new constants MFD_NOEXEC_SEAL and MFD_EXEC.  Add these
to bits/mman-shared.h (conditional on MFD_NOEXEC_SEAL not already
being defined, similar to the existing conditional on the older MFD_*
macros).

Tested for x86_64.
---

diff --git a/sysdeps/unix/sysv/linux/bits/mman-shared.h b/sysdeps/unix/sysv/linux/bits/mman-shared.h
index 91f2cad00f1..6684a84a268 100644
--- a/sysdeps/unix/sysv/linux/bits/mman-shared.h
+++ b/sysdeps/unix/sysv/linux/bits/mman-shared.h
@@ -32,6 +32,10 @@
 #  define MFD_ALLOW_SEALING 2U
 #  define MFD_HUGETLB 4U
 # endif
+# ifndef MFD_NOEXEC_SEAL
+#  define MFD_NOEXEC_SEAL 8U
+#  define MFD_EXEC 0x10U
+# endif
 
 /* Flags for mlock2.  */
 # ifndef MLOCK_ONFAULT