mbox

[0/2] ELF tests in Python and libio vtables/RELRO interaction

Message ID cover.1649676847.git.fweimer@redhat.com
Headers

Message

Florian Weimer April 11, 2022, 12:56 p.m. UTC 
  The first patch adds a basic ELF file parser (without any external
dependencies).  The second patch switches to the custom linker script by
default, fixing bug 25812.  It uses a new Python test to verify that the
vtables are indeed covered by PT_GNU_RELRO.  I considered moving the
vtables to .data.rel.ro instead, but this would still leave some
function pointer arrays unprotected.

Tested on i686-linux-gnu and x86_64-linux-gnu.  Built with
build-many-glibcs.py (after fixing the recent Hurd build regression
locally).

Florian Weimer (2):
  scripts: Add glibcelf.py module
  Default to --with-default-link=no (bug 25812)

 INSTALL                               |   6 +
 configure                             |  65 +-
 configure.ac                          |  55 +-
 elf/Makefile                          |  33 +
 elf/tst-relro-symbols.py              | 137 +++++
 manual/install.texi                   |   6 +
 scripts/glibcelf.py                   | 842 ++++++++++++++++++++++++++
 sysdeps/unix/sysv/linux/ia64/Makefile |   6 +
 8 files changed, 1032 insertions(+), 118 deletions(-)
 create mode 100644 elf/tst-relro-symbols.py
 create mode 100644 scripts/glibcelf.py


base-commit: 1a85970f41ea1e5abe6da2298a5e8fedcea26b70