[LTP] [PATCH v2] syscalls/add_key01: test the length of payload

[Yang Xu]

> Hi!
>> Seeing add_key manpages, the length of payload for "user"/"logon"
>> is 32767, this value is up tp 1M for "big_key". For "keyring" type
>> , this value is zero.
> 
> This version is nearly good, there are a few minor things I can fix up
> before applying.
> 
> However the test fails for me unless I run it as root. Looks like any
> key that is bigger than certain threshold fails with EDQUOT for me. Have
> you tried to run the test as an unpriviledged user?
Hi Cyril

I don't run this test under an unpriviledged user. Seeing keyrings 
manpages, it said "
/proc/sys/kernel/keys/maxbytes (since Linux 2.6.26)
This  is  the  maximum  number of bytes of data that a 	nonroot user can 
hold in the payloads of the keys owned by theuser.
The default value in this file is 20,000.

I perfer to add .needs_root in this flag and check this in a new case.
What do you think about it?

Best Regards
Yang Xu
>