[OE-core] [PATCH v2] insane: make GNU_HASH check slightly more robust (avoids false negatives with gold); add check for useless rpaths
Koen Kooi
koen at dominion.thruhere.net
Thu Jul 14 19:26:46 UTC 2011
Op 14 jul 2011, om 11:02 heeft Phil Blundell het volgende geschreven:
> It isn't safe to make assumptions about the order of the entries in the dynamic section. Fix the ldflags test to cope with the case where GNU_HASH comes before NEEDED and/or INIT.
>
> Also, add a new warning for binaries which contain useless (but benign) rpath entries pointing to the default search locations.
The new rpath warning is nice, but a bit too terse:
NOTE: package tinylogin-1.4-r7: task do_rm_work: Succeeded
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
WARNING: QA Issue: dynamic section contains probably-redundant RPATH /lib
NOTE: package shadow-4.1.4.3-r2: task do_package: Succeeded
I suspect it's shadow that has the rpaths, but I'm not sure. It think changing
> messages.append("dynamic section contains probably-redundant RPATH %s" % rpath)
to something like
> messages.append("dynamic section contains probably-redundant RPATH %s in %s" % (rpath, path))
Would improve things.
regards,
Koen
>
> Signed-off-by: Phil Blundell <philb at gnu.org>
> ---
> v2: fix typo in first version
>
> meta/classes/insane.bbclass | 44 ++++++++++++++++++++++++++++++++----------
> 1 files changed, 33 insertions(+), 11 deletions(-)
>
> diff --git a/meta/classes/insane.bbclass b/meta/classes/insane.bbclass
> index 8d5da00..c45f2cb 100644
> --- a/meta/classes/insane.bbclass
> +++ b/meta/classes/insane.bbclass
> @@ -92,7 +92,7 @@ def package_qa_get_machine_dict():
> }
>
>
> -WARN_QA ?= "dev-so rpaths debug-deps dev-deps debug-files arch la2 pkgconfig desktop la ldflags perms"
> +WARN_QA ?= "dev-so rpaths debug-deps dev-deps debug-files arch la2 pkgconfig desktop la ldflags perms useless-rpaths"
> ERROR_QA ?= ""
> #ERROR_QA ?= "rpaths debug-deps dev-deps debug-files arch pkgconfig perms"
>
> @@ -141,6 +141,31 @@ def package_qa_check_rpath(file,name, d, elf, messages):
> if dir in line:
> messages.append("package %s contains bad RPATH %s in file %s" % (name, line, file))
>
> +QAPATHTEST[useless-rpaths] = "package_qa_check_useless_rpaths"
> +def package_qa_check_useless_rpaths(file,name, d, elf, messages):
> + """
> + Check for RPATHs that are useless but not dangerous
> + """
> + if not elf:
> + return
> +
> + objdump = bb.data.getVar('OBJDUMP', d, True)
> + env_path = bb.data.getVar('PATH', d, True)
> +
> + libdir = bb.data.getVar("libdir", d, True)
> + base_libdir = bb.data.getVar("base_libdir", d, True)
> +
> + import re
> + rpath_re = re.compile("\s+RPATH\s+(.*)")
> + for line in os.popen("LC_ALL=C PATH=%s %s -p '%s' 2> /dev/null" % (env_path, objdump, file), "r"):
> + m = rpath_re.match(line)
> + if m:
> + rpath = m.group(1)
> + if rpath == libdir or rpath == base_libdir:
> + # The dynamic linker searches both these places anyway. There is no point in
> + # looking there again.
> + messages.append("dynamic section contains probably-redundant RPATH %s" % rpath)
> +
> QAPATHTEST[dev-so] = "package_qa_check_dev"
> def package_qa_check_dev(path, name, d, elf, messages):
> """
> @@ -238,22 +263,19 @@ def package_qa_hash_style(path, name, d, elf, messages):
> objdump = bb.data.getVar('OBJDUMP', d, True)
> env_path = bb.data.getVar('PATH', d, True)
>
> - sane = True
> - elf = False
> - # A bit hacky. We do not know if path is an elf binary or not
> - # we will search for 'NEEDED' or 'INIT' as this should be printed...
> - # and come before the HASH section (guess!!!) and works on split out
> - # debug symbols too
> + sane = False
> + has_syms = False
> +
> + # If this binary has symbols, we expect it to have GNU_HASH too.
> for line in os.popen("LC_ALL=C PATH=%s %s -p '%s' 2> /dev/null" % (env_path, objdump, path), "r"):
> - if "NEEDED" in line or "INIT" in line:
> - sane = False
> - elf = True
> + if "SYMTAB" in line:
> + has_syms = True
> if "GNU_HASH" in line:
> sane = True
> if "[mips32]" in line or "[mips64]" in line:
> sane = True
>
> - if elf and not sane:
> + if has_syms and not sane:
> messages.append("No GNU_HASH in the elf binary: '%s'" % path)
>
>
> --
> 1.7.4.1
>
>
>
>
> _______________________________________________
> Openembedded-core mailing list
> Openembedded-core at lists.openembedded.org
> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core
More information about the Openembedded-core
mailing list