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