51 lines
1.8 KiB
Diff
51 lines
1.8 KiB
Diff
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From b3736d1a3c60a3ec9959bf3b38794958546bf6a2 Mon Sep 17 00:00:00 2001
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From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Date: Tue, 30 Aug 2022 13:35:52 -0300
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Subject: [PATCH] elf: Restore how vDSO dependency is printed with
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LD_TRACE_LOADED_OBJECTS (BZ #29539)
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The d7703d3176d225d5743b21811d888619eba39e82 changed how vDSO like
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dependencies are printed, instead of just the name and address it
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follows other libraries mode and prints 'name => path'.
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Unfortunately, this broke some ldd consumer that uses the output to
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filter out the program's dependencies. For instance CMake
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bundleutilities module [1], where GetPrequirite uses the regex to filter
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out 'name => path' [2].
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This patch restore the previous way to print just the name and the
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mapping address.
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Checked on x86_64-linux-gnu.
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[1] https://github.com/Kitware/CMake/tree/master/Tests/BundleUtilities
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[2] https://github.com/Kitware/CMake/blob/master/Modules/GetPrerequisites.cmake#L733
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Reviewed-by: Florian Weimer <fweimer@redhat.com>
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(cherry picked from commit 1e903124cec4492463d075c6c061a2a772db77bf)
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---
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NEWS | 2 +-
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elf/rtld.c | 6 ++++++
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2 files changed, 7 insertions(+), 1 deletion(-)
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diff --git a/elf/rtld.c b/elf/rtld.c
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index cbbaf4a331..3e771a93d8 100644
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--- a/elf/rtld.c
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+++ b/elf/rtld.c
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@@ -2122,6 +2122,12 @@ dl_main (const ElfW(Phdr) *phdr,
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if (l->l_faked)
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/* The library was not found. */
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_dl_printf ("\t%s => not found\n", l->l_libname->name);
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+ else if (strcmp (l->l_libname->name, l->l_name) == 0)
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+ /* Print vDSO like libraries without duplicate name. Some
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+ consumers depend of this format. */
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+ _dl_printf ("\t%s (0x%0*Zx)\n", l->l_libname->name,
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+ (int) sizeof l->l_map_start * 2,
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+ (size_t) l->l_map_start);
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else
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_dl_printf ("\t%s => %s (0x%0*Zx)\n",
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DSO_FILENAME (l->l_libname->name),
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--
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2.37.3
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