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elf: add note identifier for dlopen metadata

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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>
This commit is contained in:
Luca Boccassi 2024-05-15 01:10:35 +01:00 committed by Arjun Shankar
parent 52aae08600
commit 53f9d74322
1 changed files with 4 additions and 0 deletions
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elf/elf.h
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@ -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"