glibc/dlfcn, branch master

dlfcn: Reformat Makefile.

2024-02-25T18:38:16Z

Reflow and sort Makefile. No code generation changes in non-test binary artifacts. No regressions on x86_64 and i686.

Update copyright dates with scripts/update-copyrights

2024-01-01T18:53:40Z

Fix all the remaining misspellings -- BZ 25337

2023-06-02T01:39:48Z

Move libc_freeres_ptrs and libc_subfreeres to hidden/weak functions

2023-03-27T16:57:55Z

They are both used by __libc_freeres to free all library malloc allocated resources to help tooling like mtrace or valgrind with memory leak tracking. The current scheme uses assembly markers and linker script entries to consolidate the free routine function pointers in the RELRO segment and to be freed buffers in BSS. This patch changes it to use specific free functions for libc_freeres_ptrs buffers and call the function pointer array directly with call_function_static_weak. It allows the removal of both the internal macros and the linker script sections. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Carlos O'Donell

Update copyright dates with scripts/update-copyrights

2023-01-06T21:14:39Z

dlfcn: Pass caller pointer to static dlopen implementation (bug 29446)

2022-08-04T15:54:48Z

Fixes commit 0c1c3a771eceec46e66ce1183cf988e2303bd373 ("dlfcn: Move dlopen into libc").

dlfcn: Move RTLD_DEFAULT/RTLD_NEXT outside __USE_GNU

2022-05-23T17:23:23Z

POSIX reserves the RTLD_ namespace, and this is already reflected in our conform tests. Note: RTLD_DEFAULT and RTLD_NEXT appear in IEEE Std 1003.1-2004. Many systems (e.g. FreeBSD, musl) just define the macros unconditionally. Reviewed-by: Florian Weimer Tested-by: Florian Weimer

dlfcn: Implement the RTLD_DI_PHDR request type for dlinfo

2022-04-29T15:00:53Z

The information is theoretically available via dl_iterate_phdr as well, but that approach is very slow if there are many shared objects. Reviewed-by: Carlos O'Donell Tested-by: Carlos O'Donell

dlfcn: Do not use rtld_active () to determine ld.so state (bug 29078)

2022-04-26T12:24:36Z

When audit modules are loaded, ld.so initialization is not yet complete, and rtld_active () returns false even though ld.so is mostly working. Instead, the static dlopen hook is used, but that does not work at all because this is not a static dlopen situation. Commit 466c1ea15f461edb8e3ffaf5d86d708876343bbf ("dlfcn: Rework static dlopen hooks") moved the hook pointer into _rtld_global_ro, which means that separate protection is not needed anymore and the hook pointer can be checked directly. The guard for disabling libio vtable hardening in _IO_vtable_check should stay for now. Fixes commit 8e1472d2c1e25e6eabc2059170731365f6d5b3d1 ("ld.so: Examine GLRO to detect inactive loader [BZ #20204]"). Reviewed-by: Adhemerval Zanella

Update copyright dates with scripts/update-copyrights

2022-01-01T19:40:24Z

I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines