And if I label it in init.rc (I have my custom one), would I need to call
restorecon() anyways?
On Oct 18, 2016 18:41, "Stephen Smalley" <s...@tycho.nsa.gov> wrote:
> On 10/18/2016 12:26 PM, Stephen Smalley wrote:
> > On 10/18/2016 11:43 AM, Sava Mikalački wrote:
> >> Yup, exactly as Stephen said. When I set my app to share the system uid,
> >> I do get the following denial:
> >> type=1400 audit(0.0:15): avc: denied { write } for name="ifw" dev="dm-0"
> >> ino=678613 scontext=u:r:system_app:s0
> >> tcontext=u:object_r:system_data_file:s0 tclass=dir permissive=0
> >>
> >> Here is the output of the commands Stephen pointed out:
> >> $ ls -lZd /data/system/ifw
> >> drwx------ 2 system system u:object_r:system_data_file:s0 4096
> >> 1971-01-02 12:23 /data/system/ifw
> >>
> >> $ ps -eZ | grep com.ariel.guardian
> >> system 4017 503 1588756 68980 SyS_epoll_ 768b37aa74 S
> >> com.ariel.guardian
> >>
> >> So, if I create a new file type label and assign allow rule to the
> >> system_app for this file type, would that (at least in theory) work?
> >
> > You'll need to allow access to the directory as well (your earlier
> > policy only had an allow rule for class file; you'll need rw_dir_perms
> > to the :dir as well).
> >
> > The other issue is getting /data/system/ifw labeled correctly. Doesn't
> > look like it is created by the init.rc file, so it won't automatically
> > be labeled based on file_contexts (init does that for anything it
> > creates). Probably created by the IntentFirewall code, and may need you
> > to call SELinux.restorecon() on it after creating it. You'll see some
> > examples in other code, e.g.
> > frameworks/base/services/core/java/com/android/server/pm/
> PackageInstallerService.java
> > or wallpaper/WallpaperManagerService.java.
>
> Yes, looks like you would need to add a SELinux.restorecon() call right
> after the rulesDir.mkdirs() call in IntentFirewall().
>
>
>
_______________________________________________
Seandroid-list mailing list
Seandroid-list@tycho.nsa.gov
To unsubscribe, send email to seandroid-list-le...@tycho.nsa.gov.
To get help, send an email containing "help" to
seandroid-list-requ...@tycho.nsa.gov.
