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056fc1c0e3
The audit symbind callback is not called for binaries built with
-Wl,-z,now or when LD_BIND_NOW=1 is used, nor the PLT tracking callbacks
(plt_enter and plt_exit) since this would change the expected
program semantics (where no PLT is expected) and would have performance
implications (such as for BZ#15533).
LAV_CURRENT is also bumped to indicate the audit ABI change (where
la_symbind flags are set by the loader to indicate no possible PLT
trace).
To handle powerpc64 ELFv1 function descriptor, _dl_audit_symbind
requires to know whether bind-now is used so the symbol value is
updated to function text segment instead of the OPD (for lazy binding
this is done by PPC64_LOAD_FUNCPTR on _dl_runtime_resolve).
Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu,
powerpc64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit
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|---|---|---|
| .. | ||
| bits | ||
| fpu | ||
| nptl | ||
| _mcount.S | ||
| abort-instr.h | ||
| atomic-machine.h | ||
| bcopy.S | ||
| bzero.S | ||
| configure | ||
| configure.ac | ||
| crti.S | ||
| crtn.S | ||
| dl-dtprocnum.h | ||
| dl-fptr.h | ||
| dl-lookupcfg.h | ||
| dl-machine.h | ||
| dl-sysdep.h | ||
| dl-tls.h | ||
| dl-trampoline.S | ||
| elf-initfini.h | ||
| entry.h | ||
| float128-abi.h | ||
| gccframe.h | ||
| hp-timing.h | ||
| htonl.S | ||
| htons.S | ||
| ia64libgcc.S | ||
| ieee754.h | ||
| Implies | ||
| jmpbuf-unwind.h | ||
| ldbl2mpn.c | ||
| ldsodefs.h | ||
| libc-symver.h | ||
| libc-tls.c | ||
| linkmap.h | ||
| machine-gmon.h | ||
| Makeconfig | ||
| Makefile | ||
| math-tests-snan.h | ||
| memccpy.S | ||
| memchr.S | ||
| memcmp.S | ||
| memcpy.S | ||
| memmove.S | ||
| memset.S | ||
| memusage.h | ||
| softpipe.h | ||
| sotruss-lib.c | ||
| stackguard-macros.h | ||
| stackinfo.h | ||
| start.S | ||
| strchr.S | ||
| strcmp.S | ||
| strcpy.S | ||
| strlen.S | ||
| strncmp.S | ||
| strncpy.S | ||
| sysdep.h | ||
| tininess.h | ||
| tls-macros.h | ||
| tst-audit.h | ||
| unwind-arch.h | ||
| unwind-resume.c | ||
| Versions | ||