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| author | Adhemerval Zanella Netto <adhemerval.zanella@linaro.org> | 2022-12-27 18:11:43 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-03-27 13:57:55 -0300 |
| commit | 3020f72618e4f1d7338cd42b8bc7b2813e961b5a (patch) | |
| tree | d61cc39cb5aa140de5331cd1a2ba6ab796db0c81 /elf | |
| parent | f65ca70deaf38db4ca12458e74cefd8ad9063956 (diff) | |
| download | glibc-3020f72618e4f1d7338cd42b8bc7b2813e961b5a.zip glibc-3020f72618e4f1d7338cd42b8bc7b2813e961b5a.tar.gz glibc-3020f72618e4f1d7338cd42b8bc7b2813e961b5a.tar.bz2 | |
libio: Remove the usage of __libc_IO_vtables
Instead of using a special ELF section along with a linker script
directive to put the IO vtables within the RELRO section, the libio
vtables are all moved to an array marked as data.relro (so linker
will place in the RELRO segment without the need of extra directives).
To avoid static linking namespace issues and including all vtable
referenced objects, all required function pointers are set to weak alias.
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/Makefile | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/elf/Makefile b/elf/Makefile index 4d0e04b..be6f2ca 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -595,23 +595,9 @@ $(objpfx)tst-relro-ldso.out: tst-relro-symbols.py $(..)/scripts/glibcelf.py \ $(objpfx)tst-relro-libc.out: tst-relro-symbols.py $(..)/scripts/glibcelf.py \ $(common-objpfx)libc.so $(PYTHON) tst-relro-symbols.py $(common-objpfx)libc.so \ - --required=_IO_cookie_jumps \ --required=_IO_file_jumps \ - --required=_IO_file_jumps_maybe_mmap \ - --required=_IO_file_jumps_mmap \ - --required=_IO_mem_jumps \ - --required=_IO_printf_buffer_as_file_jumps \ - --required=_IO_proc_jumps \ - --required=_IO_str_jumps \ --required=_IO_wfile_jumps \ - --required=_IO_wfile_jumps_maybe_mmap \ - --required=_IO_wfile_jumps_mmap \ - --required=_IO_wmem_jumps \ - --required=_IO_wprintf_buffer_as_file_jumps \ - --required=_IO_wstr_jumps \ - --optional=_IO_old_cookie_jumps \ - --optional=_IO_old_file_jumps \ - --optional=_IO_old_proc_jumps \ + --required=__io_vtables \ > $@ 2>&1; $(evaluate-test) ifeq ($(run-built-tests),yes) |