zorci

Hi, after trying hours to write a file to disc from a servlet, I tried
to get the "WriteFileServlet" servlet example running as described in
http://www.oreilly.com/catalog/tomcat/chapter/ch06.pdf but it does NOT
work:

java.io.FileNotFoundException: /var/lib/tomcat4/webapps/ROOT/test.txt
(Permission denied)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.(FileOutputStream.java:10 2)
at java.io.FileOutputStream.(FileOutputStream.java:62 )
at java.io.FileOutputStream.(FileOutputStream.java:13 2)
at WriteFileServlet.service(WriteFileServlet.java:19)
at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.ac cess$0(ApplicationFilterChain.java:197)
at org.apache.catalina.core.ApplicationFilterChain$1. run(ApplicationFilterChain.java:176)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:172)
at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:243)
....

After restarting tomcat, catalina.policy contains the appropriate

grant codeBase "file:${catalina.home}/webapps/ROOT/-" {
permission java.io.FilePermission
"${catalina.home}/webapps/ROOT/test.txt", "read,write,delete";
};

Even if "${catalina.home}" is substituted by "/var/lib/tomcat4" or
give AllPermission for this file or the whole ROOT-directory it does
not work.

Btw, file reading from servlet and file reading/writing from a
seperate test.class started manually with "java test" works well.

Could it be that the owner of tomcat4/webapps/ROOT is root and not
tomcat4 and tomcat4 has thus no write permission? If so, where do I
have to add that permission or where can I change TOMCAT_USER to root
(/etc/tomcat4/tomcat4.conf does not exist!?)?

Any ideas?