>What kernel are you using? I 've used "git clone https://android.googlesource.com/kernel/goldfish.git"; to get my kernel souce code. and using "android-goldfish-2.6.29" branch. Found no xattr support for yaffs2, then used the patch from www.enck.org/tools/yaffs_xattr.patch to patch the kernel, and found the above problem.
>Also, how are you invoking the emulator? I set ANDROID_PRODUCT_OUT to my out dir which have .img files. And use"emulator -show-kernel -kernel kernel/goldfish/arch/arm/boot/zImage" to invoke the emulator >And which partition are you trying to modify? /data or /system? I try to change the xattr of the file in /data/local. I'm wondering if i can get the detailed process to patch the kernel source. Thank you again for your help! Dywisdomno1 2013/1/14 Stephen Smalley <s...@tycho.nsa.gov> > 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? >
