readelf: add pretty printing for FDO Dlopen Metadata note
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Commit Message
From: Luca Boccassi <bluca@debian.org>
Note that the webpage in the comment is not published yet,
it will be next week when the next systemd RC is tagged.
The document can be viewed right now on github at:
https://github.com/systemd/systemd/blob/main/docs/ELF_DLOPEN_METADATA.md
But the node ID and the string format are now fixed, even
if the content of the string might change, it will still be
a string.
Signed-off-by: Luca Boccassi <bluca@debian.org>
---
binutils/readelf.c | 7 +++++++
include/elf/common.h | 3 +++
2 files changed, 10 insertions(+)
Comments
Hi Luca,
> Note that the webpage in the comment is not published yet,
> it will be next week when the next systemd RC is tagged.
> The document can be viewed right now on github at:
> https://github.com/systemd/systemd/blob/main/docs/ELF_DLOPEN_METADATA.md
>
> But the node ID and the string format are now fixed, even
> if the content of the string might change, it will still be
> a string.
Approved - please apply.
Cheers
Nick
On Mon, 20 May 2024 at 15:42, Nick Clifton <nickc@redhat.com> wrote:
>
> Hi Luca,
>
> > Note that the webpage in the comment is not published yet,
> > it will be next week when the next systemd RC is tagged.
> > The document can be viewed right now on github at:
> > https://github.com/systemd/systemd/blob/main/docs/ELF_DLOPEN_METADATA.md
> >
> > But the node ID and the string format are now fixed, even
> > if the content of the string might change, it will still be
> > a string.
>
> Approved - please apply.
Hi,
Thank you - please note that I do not have push permissions, so cannot
apply it myself.
Hi Luca,
>> Approved - please apply.
> Thank you - please note that I do not have push permissions, so cannot
> apply it myself.
Applied. :-)
Cheers
Nick
@@ -20518,6 +20518,8 @@ get_note_type (Filedata * filedata, unsigned e_type)
return _("GO BUILDID");
case FDO_PACKAGING_METADATA:
return _("FDO_PACKAGING_METADATA");
+ case FDO_DLOPEN_METADATA:
+ return _("FDO_DLOPEN_METADATA");
default:
break;
}
@@ -21777,6 +21779,11 @@ print_fdo_note (Elf_Internal_Note * pnote)
printf (_(" Packaging Metadata: %.*s\n"), (int) pnote->descsz, pnote->descdata);
return true;
}
+ if (pnote->descsz > 0 && pnote->type == FDO_DLOPEN_METADATA)
+ {
+ printf (_(" Dlopen Metadata: %.*s\n"), (int) pnote->descsz, pnote->descdata);
+ return true;
+ }
return false;
}
@@ -1037,6 +1037,9 @@
/* Values for FDO .note.package notes as defined on https://systemd.io/COREDUMP_PACKAGE_METADATA/ */
#define FDO_PACKAGING_METADATA 0xcafe1a7e
+/* Values for FDO .note.dlopen notes as defined on https://systemd.io/ELF_DLOPEN_METADATA/ */
+#define FDO_DLOPEN_METADATA 0x407c0c0a
+
/* These three macros disassemble and assemble a symbol table st_info field,
which contains the symbol binding and symbol type. The STB_ and STT_
defines identify the binding and type. */