Author: emaste
Date: Fri Nov 2 19:02:03 2018
New Revision: 340076
URL: https://svnweb.freebsd.org/changeset/base/340076
Log:
Define NT_FREEBSD_FEATURE_CTL ELF note type
This ELF note will be used to allow binaries to opt out of, or in to,
upcoming vulnerability mitigation and other features.
Committing the definition and readelf change separately to allow
independent MFC.
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Modified:
head/contrib/elftoolchain/readelf/readelf.c
head/sys/sys/elf_common.h
Modified: head/contrib/elftoolchain/readelf/readelf.c
==============================================================================
--- head/contrib/elftoolchain/readelf/readelf.c Fri Nov 2 18:40:01 2018
(r340075)
+++ head/contrib/elftoolchain/readelf/readelf.c Fri Nov 2 19:02:03 2018
(r340076)
@@ -1121,6 +1121,7 @@ note_type_freebsd(unsigned int nt)
case 1: return "NT_FREEBSD_ABI_TAG";
case 2: return "NT_FREEBSD_NOINIT_TAG";
case 3: return "NT_FREEBSD_ARCH_TAG";
+ case 4: return "NT_FREEBSD_FEATURE_CTL";
default: return (note_type_unknown(nt));
}
}
Modified: head/sys/sys/elf_common.h
==============================================================================
--- head/sys/sys/elf_common.h Fri Nov 2 18:40:01 2018 (r340075)
+++ head/sys/sys/elf_common.h Fri Nov 2 19:02:03 2018 (r340076)
@@ -759,6 +759,7 @@ typedef struct {
#define NT_FREEBSD_ABI_TAG 1
#define NT_FREEBSD_NOINIT_TAG 2
#define NT_FREEBSD_ARCH_TAG 3
+#define NT_FREEBSD_FEATURE_CTL 4
/* Values for n_type. Used in core files. */
#define NT_PRSTATUS 1 /* Process status. */
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