[glibc] elf: add note identifier for dlopen metadata

[glibc] elf: add note identifier for dlopen metadata

[Arjun Shankar]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=53f9d74322c831c76bc6cf6ed8941267e8749604

commit 53f9d74322c831c76bc6cf6ed8941267e8749604
Author: Luca Boccassi <bluca@debian.org>
Date:   Wed May 15 01:10:35 2024 +0100

    elf: add note identifier for dlopen metadata
    
    This new note type is defined at https://systemd.io/ELF_DLOPEN_METADATA/
    and is used to list shared library dependencies loaded via dlopen().
    Distro packagers can use this, via tools like those available at
    https://github.com/systemd/package-notes to automatically generate
    dependencies when building projects that make use of this
    specification.
    
    By defining the note id here we can use it in other projects as a
    stable identifier, for example in 'readelf' to pretty-print its
    content.
    
    Signed-off-by: Luca Boccassi <bluca@debian.org>
    Reviewed-by: Arjun Shankar <arjun@redhat.com>

Diff:
---
 elf/elf.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/elf/elf.h b/elf/elf.h
index d6ec0120c0..081742a9c3 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -1340,6 +1340,10 @@ typedef struct
    https://systemd.io/ELF_PACKAGE_METADATA/ */
 #define NT_FDO_PACKAGING_METADATA 0xcafe1a7e
 
+/* dlopen metadata as defined on
+   https://systemd.io/ELF_DLOPEN_METADATA/ */
+#define NT_FDO_DLOPEN_METADATA 0x407c0c0a
+
 /* Note section name of program property.   */
 #define NOTE_GNU_PROPERTY_SECTION_NAME ".note.gnu.property"