porting strace to Bionic libc

[enh]

Add multi-personality support to struct old_sigaction decoding

struct sigaction is another structure that contains members
whose size differs between 32-bit and 64-bit personalities.

Signed-off-by: Elliott Hughes <enh at google.com>


On Thu, Feb 27, 2014 at 4:52 PM, enh <enh at google.com> wrote:
> this fixes decoding of struct sigaction for arm32 binaries traced by
> an arm64 strace for me. arm32-arm32 and arm64-arm64 continue to work.
>
> On Thu, Feb 27, 2014 at 1:45 PM, Dmitry V. Levin <ldv at altlinux.org> wrote:
>> On Thu, Feb 27, 2014 at 11:06:09AM -0800, enh wrote:
>>> On Wed, Feb 26, 2014 at 3:42 PM, Dmitry V. Levin <ldv at altlinux.org> wrote:
>>> > I've posted a patch that reimplements signal mask decoding without use of
>>> > sigset_t.  It fixes this issue, but may introduce new bugs.  Please check
>>> > whether it builds and passes sigaction.test in your environment.
>>>
>>> works for me on arm strace tracing an arm binary and arm64 strace
>>> tracing an arm64 binary, so please commit.
>>
>> Thanks.
>>
>>> (it doesn't work on arm64 when tracing a 32-bit process, but that's a
>>> separate issue. do you want me to send you patches in the style of
>>> your stack_t patch from yesterday, or do you prefer to write the
>>> patches yourself and just want me to let you know when i hit a struct
>>> that differs between LP32 and LP64?)
>>
>> If you've stumbled upon a bug and made a patch that fixes it, please do
>> not hesitate and send the fix to this list.  Of course I prefer patches
>> that are ready to be applied. :)
>>
>>
>> --
>> ldv
>>
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>>
>
>
>
> --
> Elliott Hughes - http://who/enh - http://jessies.org/~enh/
> Java i18n/JNI/NIO, or bionic questions? Mail me/drop by/add me as a reviewer.



-- 
Elliott Hughes - http://who/enh - http://jessies.org/~enh/
Java i18n/JNI/NIO, or bionic questions? Mail me/drop by/add me as a reviewer.