CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2020/01/24 18:28:38
Modified files:
sys/kern : exec_elf.c
Log message:
The ELF NOTE parser would only inspect the first NOTE for 'OpenBSD'.
Furthermore the parser was unaware a NOTE could contain multiple
records. The scanner has been rewritten. Another bonus bug: if the
binary was labelled as OPENBSD ABI, NOTE parsing was completely
skipped so WXNEEDED wasn't learned either...
Now that NOTEs are scanned correctly, search for the 'Go' NOTE. (During
this work found the Go linker produces slightly broken NOTEs - Go team
will probably fix that).
Work is happening for our Go dynamic-binaries to use libc syscall
stubs, but the change isn't ready. Go (and reportedly free-pascal
also?) binaries are the only dynamic programs which require syscalls
in the main-program. Since Go binaries are now identifiable, we can
disable syscalls in all other regular dynamic-main-programs, gaining
the strict enforcement we want. When the the Go-libc-stub change
arrives we'll delete the Go NOTE scan and treat Go binaries same as
regular binaries.
This change probably breaks free-pascal, a lower priority item to repair.
some discussion with jsing, ok kettenis
