[OE-core] [PATCH] insane: detect and warn about relocations in .text
Mark Hatle
mark.hatle at windriver.com
Wed Nov 7 09:59:09 UTC 2012
On 11/6/12 6:24 PM, Phil Blundell wrote:
> Ping?
I do think we need this. Having the textrel does prevent prelinking as well.
--Mark
> On Wed, 2012-10-03 at 11:24 +0100, Phil Blundell wrote:
>> Signed-off-by: Phil Blundell <pb at pbcl.net>
>> ---
>> This requires qa.elf.run_objdump() so needs to be applied after the
>> patch which adds that function.
>>
>> meta/classes/insane.bbclass | 26 +++++++++++++++++++++++++-
>> 1 file changed, 25 insertions(+), 1 deletion(-)
>>
>> diff --git a/meta/classes/insane.bbclass b/meta/classes/insane.bbclass
>> index 5848ab4..ff35ed8 100644
>> --- a/meta/classes/insane.bbclass
>> +++ b/meta/classes/insane.bbclass
>> @@ -108,7 +108,7 @@ def package_qa_get_machine_dict():
>>
>>
>> # Currently not being used by default "desktop"
>> -WARN_QA ?= "ldflags useless-rpaths rpaths unsafe-references-in-binaries unsafe-references-in-scripts staticdev libdir"
>> +WARN_QA ?= "ldflags useless-rpaths rpaths unsafe-references-in-binaries unsafe-references-in-scripts staticdev libdir textrel"
>> ERROR_QA ?= "dev-so debug-deps dev-deps debug-files arch la2 pkgconfig la perms dep-cmp"
>>
>> ALL_QA = "${WARN_QA} ${ERROR_QA}"
>> @@ -421,6 +421,30 @@ def package_qa_check_desktop(path, name, d, elf, messages):
>> for l in output:
>> messages.append("Desktop file issue: " + l.strip())
>>
>> +QAPATHTEST[textrel] = "package_qa_textrel"
>> +def package_qa_textrel(path, name, d, elf, messages):
>> + """
>> + Check if the binary contains relocations in .text
>> + """
>> +
>> + if not elf:
>> + return
>> +
>> + if os.path.islink(path):
>> + return
>> +
>> + phdrs = elf.run_objdump("-p", d)
>> + sane = True
>> +
>> + import re
>> + textrel_re = re.compile("\s+TEXTREL\s+")
>> + for line in phdrs.split("\n"):
>> + if textrel_re.match(line):
>> + sane = False
>> +
>> + if not sane:
>> + messages.append("ELF binary '%s' has relocations in .text" % path)
>> +
>> QAPATHTEST[ldflags] = "package_qa_hash_style"
>> def package_qa_hash_style(path, name, d, elf, messages):
>> """
>
>
>
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