157 lines
5.1 KiB
Diff
157 lines
5.1 KiB
Diff
commit 7a3f6fe60b8519b5372f5a5521ccbac59411f33f
|
|
Author: Mark Wielaard <mark@klomp.org>
|
|
Date: Sun Nov 11 23:50:41 2018 +0100
|
|
|
|
Recognize NT_VERSION notes.
|
|
|
|
NT_VERSION notes are emitted by the gas .version directive.
|
|
They have an empty description and (ab)use the owner name to store the
|
|
version data string.
|
|
|
|
Signed-off-by: Mark Wielaard <mark@klomp.org>
|
|
|
|
diff --git a/libebl/eblobjnote.c b/libebl/eblobjnote.c
|
|
index 57e9f52..8fda7d9 100644
|
|
--- a/libebl/eblobjnote.c
|
|
+++ b/libebl/eblobjnote.c
|
|
@@ -135,6 +135,14 @@ ebl_object_note (Ebl *ebl, const char *name, uint32_t type,
|
|
return;
|
|
}
|
|
|
|
+ /* NT_VERSION doesn't have any info. All data is in the name. */
|
|
+ if (descsz == 0 && type == NT_VERSION)
|
|
+ return;
|
|
+
|
|
+ /* Everything else should have the "GNU" owner name. */
|
|
+ if (strcmp ("GNU", name) != 0)
|
|
+ return;
|
|
+
|
|
switch (type)
|
|
{
|
|
case NT_GNU_BUILD_ID:
|
|
@@ -337,7 +345,7 @@ ebl_object_note (Ebl *ebl, const char *name, uint32_t type,
|
|
break;
|
|
|
|
case NT_GNU_ABI_TAG:
|
|
- if (strcmp (name, "GNU") == 0 && descsz >= 8 && descsz % 4 == 0)
|
|
+ if (descsz >= 8 && descsz % 4 == 0)
|
|
{
|
|
Elf_Data in =
|
|
{
|
|
diff --git a/libebl/eblobjnotetypename.c b/libebl/eblobjnotetypename.c
|
|
index af23cae..8cdd781 100644
|
|
--- a/libebl/eblobjnotetypename.c
|
|
+++ b/libebl/eblobjnotetypename.c
|
|
@@ -39,6 +39,7 @@
|
|
|
|
const char *
|
|
ebl_object_note_type_name (Ebl *ebl, const char *name, uint32_t type,
|
|
+ GElf_Word descsz,
|
|
char *buf, size_t len)
|
|
{
|
|
const char *res = ebl->object_note_type_name (name, type, buf, len);
|
|
@@ -80,14 +81,19 @@ ebl_object_note_type_name (Ebl *ebl, const char *name, uint32_t type,
|
|
|
|
if (strcmp (name, "GNU") != 0)
|
|
{
|
|
+ /* NT_VERSION is special, all data is in the name. */
|
|
+ if (descsz == 0 && type == NT_VERSION)
|
|
+ return "VERSION";
|
|
+
|
|
snprintf (buf, len, "%s: %" PRIu32, gettext ("<unknown>"), type);
|
|
return buf;
|
|
}
|
|
|
|
+ /* And finally all the "GNU" note types. */
|
|
static const char *knowntypes[] =
|
|
{
|
|
#define KNOWNSTYPE(name) [NT_##name] = #name
|
|
- KNOWNSTYPE (VERSION),
|
|
+ KNOWNSTYPE (GNU_ABI_TAG),
|
|
KNOWNSTYPE (GNU_HWCAP),
|
|
KNOWNSTYPE (GNU_BUILD_ID),
|
|
KNOWNSTYPE (GNU_GOLD_VERSION),
|
|
diff --git a/libebl/libebl.h b/libebl/libebl.h
|
|
index a34fe48..5830654 100644
|
|
--- a/libebl/libebl.h
|
|
+++ b/libebl/libebl.h
|
|
@@ -175,8 +175,8 @@ extern const char *ebl_core_note_type_name (Ebl *ebl, uint32_t type, char *buf,
|
|
|
|
/* Return name of the note section type for an object file. */
|
|
extern const char *ebl_object_note_type_name (Ebl *ebl, const char *name,
|
|
- uint32_t type, char *buf,
|
|
- size_t len);
|
|
+ uint32_t type, GElf_Word descsz,
|
|
+ char *buf, size_t len);
|
|
|
|
/* Print information about object note if available. */
|
|
extern void ebl_object_note (Ebl *ebl, const char *name, uint32_t type,
|
|
diff --git a/src/elflint.c b/src/elflint.c
|
|
index fa3af4c..dff74ee 100644
|
|
--- a/src/elflint.c
|
|
+++ b/src/elflint.c
|
|
@@ -1,5 +1,5 @@
|
|
/* Pedantic checking of ELF files compliance with gABI/psABI spec.
|
|
- Copyright (C) 2001-2015, 2017 Red Hat, Inc.
|
|
+ Copyright (C) 2001-2015, 2017, 2018 Red Hat, Inc.
|
|
This file is part of elfutils.
|
|
Written by Ulrich Drepper <drepper@redhat.com>, 2001.
|
|
|
|
@@ -4332,7 +4332,17 @@ section [%2d] '%s': unknown core file note type %" PRIu32
|
|
case NT_GNU_BUILD_ID:
|
|
case NT_GNU_GOLD_VERSION:
|
|
case NT_GNU_PROPERTY_TYPE_0:
|
|
- break;
|
|
+ if (nhdr.n_namesz == sizeof ELF_NOTE_GNU
|
|
+ && strcmp (data->d_buf + name_offset, ELF_NOTE_GNU) == 0)
|
|
+ break;
|
|
+ else
|
|
+ {
|
|
+ /* NT_VERSION is 1, same as NT_GNU_ABI_TAG. It has no
|
|
+ descriptor and (ab)uses the name as version string. */
|
|
+ if (nhdr.n_descsz == 0 && nhdr.n_type == NT_VERSION)
|
|
+ break;
|
|
+ }
|
|
+ goto unknown_note;
|
|
|
|
case 0:
|
|
/* Linux vDSOs use a type 0 note for the kernel version word. */
|
|
@@ -4341,16 +4351,21 @@ section [%2d] '%s': unknown core file note type %" PRIu32
|
|
break;
|
|
FALLTHROUGH;
|
|
default:
|
|
+ {
|
|
+ unknown_note:
|
|
if (shndx == 0)
|
|
ERROR (gettext ("\
|
|
-phdr[%d]: unknown object file note type %" PRIu32 " at offset %zu\n"),
|
|
- phndx, (uint32_t) nhdr.n_type, offset);
|
|
+phdr[%d]: unknown object file note type %" PRIu32 " with owner name '%s' at offset %zu\n"),
|
|
+ phndx, (uint32_t) nhdr.n_type,
|
|
+ (char *) data->d_buf + name_offset, offset);
|
|
else
|
|
ERROR (gettext ("\
|
|
section [%2d] '%s': unknown object file note type %" PRIu32
|
|
- " at offset %zu\n"),
|
|
+ " with owner name '%s' at offset %zu\n"),
|
|
shndx, section_name (ebl, shndx),
|
|
- (uint32_t) nhdr.n_type, offset);
|
|
+ (uint32_t) nhdr.n_type,
|
|
+ (char *) data->d_buf + name_offset, offset);
|
|
+ }
|
|
}
|
|
}
|
|
|
|
diff --git a/src/readelf.c b/src/readelf.c
|
|
index c6c3fb3..659e34f 100644
|
|
--- a/src/readelf.c
|
|
+++ b/src/readelf.c
|
|
@@ -12201,6 +12201,7 @@ handle_notes_data (Ebl *ebl, const GElf_Ehdr *ehdr,
|
|
? ebl_core_note_type_name (ebl, nhdr.n_type,
|
|
buf, sizeof (buf))
|
|
: ebl_object_note_type_name (ebl, name, nhdr.n_type,
|
|
+ nhdr.n_descsz,
|
|
buf2, sizeof (buf2)));
|
|
|
|
/* Filter out invalid entries. */
|