RFR[ 9u-dev] JDK-8075773 - jps running as root fails after the fix of JDK-8050807

[cheleswer sahu]

Hi,

Please review the code changes for 
"https://bugs.openjdk.java.net/browse/JDK-8075773" .
Web review Link: http://cr.openjdk.java.net/~poonam/8075773/webrev.00/

Bug brief: This bug was introduced after the fix of  JDK-8050807. JPS 
reads the process information from 
"/tmp/hsperfdata_$username_$ProcessID". In order to ensure the file is 
secure to open and read, it tries to match the UID with the effective 
user ID of that file. When JPS is run as root user this check gets failed.

Fix: If JPS is running as a root user, then the check which matches, UID 
with effective user id is skipped.

I have test this fix, it's working fine and found no security issue.


Regards,
Cheleswer