On 01/14/2013 08:27 AM, Stephen Smalley wrote:
> On 01/13/2013 11:15 PM, 董钰 wrote:
>> Hello
>> I want to set security label(use xattr security.mylabel) of the file in
>> Yaffs2 on Android.
>> I've been able to use setxattr syscall to set security label, and use
>> getxattr syscall to verify the change right after that.
>> The problem is that the change is gone when i reboot the emulator.I used
>> to try the same process on linux and ext2 filesystem,and the change
>> will last like forever.
>>
>> Is is about the emulator? Or it is all about the support level of xattr
>> in Yaffs2?
>>
>> Thank you for any help.
> 
> What kernel are you using?  We had to patch the emulator kernel for SE
> Android, back-porting a more recent snapshot of the yaffs2 code that
> provides native support for xattrs and applying a further change to
> ensure that new inodes are assigned a SELinux attribute on creation.
> 
> Also, how are you invoking the emulator?

And which partition are you trying to modify?  /data or /system?


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