27af0a3dc8
The dynamic loader of GNU libc 2.28 uses this system call to initialize CPU information, see https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/x86/cpu-features.c;hb=glibc-2.28#l28. Simulating an older kernel by returning EINVAL should be the most harmless rule here. The ARCH_CET_STATUS symbol isn't yet exposed by the kernel headers; see the FIXME at the top of https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/x86/include/asm/prctl.h;hb=glibc-2.28. * lib-src/seccomp-filter.c (ARCH_CET_STATUS): Define if not already present. Inline the value because there doesn't seem to be a header file exporting this constant yet. (main): Make ARCH_CET_STATUS subfunction of arch_prctl return EINVAL.
This directory contains the source code for the architecture-dependent
files that go in ${archlibdir}. At present, these are mostly utility
programs used by GNU Emacs.