[Toybox] Valid range for stat userID and groupID?

[Rob Landley]

On 05/13/2017 08:29 AM, darken wrote:
> I stumbled upon the following "stat -c
> "%a:%F:%d:%i:%u:%g:%s:%B:%b:%Z:%N" output from a GT-N5110 at 7.1.2
> 
>> 5665:FIFO (named
> pipe):45836:456097:1171143868:4160815103:0:512:0:18446744073709551615:`/data/user/0/de.andip71.boeffla_config_v2/app_webview/webview_data.lock'
> 
> The a UID of "1171143868" and GUID of "4160815103" seems way too large.
> The device in question is rooted and that specific file with sticky &
> suid bit seems to be a bit special anyways, but I've also seen this from
> more vanilla files like this from a SM-N9300 at 6.0.1:
> 
>> 600:regular
> file:100d:116024:1001:4294967295:16384:4096:32:1494489310:`/data/user/0/com.android.providers.telephony/opname.db'
> 
> GUID of "4294967295" seems large too.

That's -1 typecast to unsigned int.

Your previous UID and GID are:

1171143868: 0b01000101110011100011110010111100
4160815103: 0b11111000000000001111111111111111

Other than the first 8 bits of the first one being a capital "E" in
ascii this makes no sense to me.

Try running it under strace to see what stat() is returning?

Rob