diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-08-30 13:35:52 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-08-31 09:08:33 -0300 |
| commit | 1e903124cec4492463d075c6c061a2a772db77bf (patch) | |
| tree | 9ae14f87c9dc3db90921a8c26994dcbc61f07b21 | |
| parent | 8cd559cf5afe3894f92c2be6f972e1a4e38c56ca (diff) | |
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>
| -rw-r--r-- | elf/rtld.c | 6 |
1 files changed, 6 insertions, 0 deletions
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), |