On 08/09/2013 03:22 PM, Martin Jansa wrote:
> On Fri, Aug 09, 2013 at 02:47:22PM +0800, Hongxu Jia wrote:
>> On 08/09/2013 01:25 AM, Martin Jansa wrote:
>>> On Wed, Jul 31, 2013 at 05:51:35AM +0000, git@git.openembedded.org wrote:
>>>> Module: openembedded-core.git
>>>> Branch: master
>>>> Commit: 6190c69a9f78aeef951c39e4c8700e945bbec5f7
>>>> URL:    http://git.openembedded.org/?p=openembedded-core.git&a=commit;h=6190c69a9f78aeef951c39e4c8700e945bbec5f7
>>>>
>>>> Author: Hongxu Jia <hongxu.jia@windriver.com>
>>>> Date:   Fri Jul 26 20:09:08 2013 +0800
>>>>
>>>> util-linux: use u-a for su
>>>>
>>>> Use alternatives mechanism to prevent confliction of attempted
>>>> installing su binary among busybox, shadow and util-linux.
>>>>
>>>> [YOCTO #4926]
>>>>
>>>> Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
>>>> Signed-off-by: Saul Wold <sgw@linux.intel.com>
>>> Doesn't seem to work correctly:
>>>
>>> Configuring util-linux.
>>> update-alternatives: Linking //bin/dmesg to /bin/dmesg.util-linux
>>> update-alternatives: Linking //bin/kill to /bin/kill.procps
>>> update-alternatives: Linking //bin/more to /bin/more.util-linux
>>> update-alternatives: Linking //sbin/mkswap to /sbin/mkswap.util-linux
>>> update-alternatives: Linking //sbin/blockdev to /sbin/blockdev.util-linux
>>> update-alternatives: Linking //sbin/pivot_root to /sbin/pivot_root.util-linux
>>> update-alternatives: Linking //sbin/mkfs.minix to /sbin/mkfs.minix.util-linux
>>> update-alternatives: Linking //usr/bin/hexdump to /usr/bin/hexdump.util-linux
>>> update-alternatives: Linking //usr/bin/last to /usr/bin/last.util-linux
>>> update-alternatives: Linking //usr/bin/logger to /usr/bin/logger.util-linux
>>> update-alternatives: Linking //usr/bin/mesg to /usr/bin/mesg.util-linux
>>> update-alternatives: Linking //usr/bin/renice to /usr/bin/renice.util-linux
>>> update-alternatives: Linking //usr/bin/wall to /usr/bin/wall.util-linux
>>> update-alternatives: Linking //usr/bin/setsid to /usr/bin/setsid.util-linux
>>> update-alternatives: Linking //usr/bin/chrt to /usr/bin/chrt.util-linux
>>> update-alternatives: Linking //usr/bin/flock to /usr/bin/flock.util-linux
>>> update-alternatives: Linking //sbin/hwclock to /bin/busybox.nosuid
>>> update-alternatives: Linking //usr/bin/utmpdump to /usr/bin/utmpdump.util-linux
>>> update-alternatives: Linking //usr/bin/eject to /usr/bin/eject.util-linux
>>> update-alternatives: Linking //bin/getopt to /usr/bin/getopt
>>> update-alternatives: Error: cannot register alternative su to /usr/bin/su since it is already registered to /bin/su
>>>
>>> SHR root@gjama ~ $ cat /var/lib/opkg/alternatives/su
>>> /bin/su
>>> /bin/busybox.suid 50
>> Are you sure the following patch has been updated to your local branch?
>> http://git.yoctoproject.org/cgit.cgi/poky-contrib/commit/?h=hongxu/fix-su&id=32eee3e731772da04ccb64b4da9ca9b413433674
>>
>> busybox: move /bin/su to /usr/bin/su to match util-linux and shadow
>> This patch is used to fix this issue.
>>
>> Maybe you should rebuild busybox and try again.
> Maybe opkg was upgrading them in different order and util-linux was
> upgraded before busybox, I don't have complete log from first 2 devices,
> but I'll keep whole log when upgrading other devices.
>
> If there isn't runtime dependency between busybox and util-linux then it
> will probably install them in undeterministic order.
>
Yes. You're right.
The problem is more complex than I thought.
I'll try to figure out a solution with as little trade-off as possible.
For now, what I can see is that we have to make the opkg's 
update-alternatives more complex to work correctly in such situation.

Best Regards,
Chen Qi

>>> should base_bindir be used for ALTERNATIVE_LINK_NAME and bindir for TARGET?
>>>
>>>> ---
>>>>
>>>>    meta/recipes-core/util-linux/util-linux.inc |    7 +++++++
>>>>    1 files changed, 7 insertions(+), 0 deletions(-)
>>>>
>>>> diff --git a/meta/recipes-core/util-linux/util-linux.inc b/meta/recipes-core/util-linux/util-linux.inc
>>>> index 3c8c246..961bcc5 100644
>>>> --- a/meta/recipes-core/util-linux/util-linux.inc
>>>> +++ b/meta/recipes-core/util-linux/util-linux.inc
>>>> @@ -215,3 +215,10 @@ ALTERNATIVE_LINK_NAME[reset] = "${bindir}/reset"
>>>>    ALTERNATIVE_TARGET[reset] = "${base_bindir}/reset"
>>>>    
>>>>    BBCLASSEXTEND = "native nativesdk"
>>>> +
>>>> +python do_package_prepend () {
>>>> +    if '--enable-su' in d.getVar('EXTRA_OECONF', True).split():
>>>> +        alt_name = "su"
>>>> +        d.setVarFlag('ALTERNATIVE_LINK_NAME', alt_name, '%s/%s' % (d.getVar('bindir', True), alt_name))
>>>> +        d.appendVar('ALTERNATIVE_%s' % (d.getVar('PN', True)), ' ' + alt_name)
>>>> +}
>>>>
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>
>
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