tomcat,grails , java.io.IOException: Permission denied while creating new file from Tomcat in Grails


java.io.IOException: Permission denied while creating new file from Tomcat in Grails

Question:

Tag: tomcat,grails

I have a Grails application deployed on Tomcat 7. Here is my code fragment which tries to create a new file:

def path = "/var/csvs" + file.fileItem.fileName
def fileInputStream = file.inputStream
File f = new File(path)
if (!f.exists()) {
   f.createNewFile()
}

I get this exception:

Permission denied. Stacktrace follows:
java.io.IOException: Permission denied
    at java.io.File.createNewFile(File.java:1006)

I have already given rwx permission to tomcat7(the user under which tomcat is running). So why am I not able to create a new file? Is it that "/var/csvs" is trying to create a file relative to the tomcat webapps directory? If yes then how should I create a file at /var/csvs (where csvs is a folder I have created under the /var)?

EDIT:

Here is my permissions on /var/csvs folder:

[email protected]:/# ls -ld /var/csvs
drwxrwxrwx 2 tomcat7 tomcat7 4096 Jun  3 15:44 /var/csvs

So clearly tomcat7 is the owner of that directory and mode is 777


Answer:

Shouldn't the code be like

def path = "/var/csvs/" + file.fileItem.fileName // notice the trailing fwd slash

otherwise it is very likely you're trying to write into the /var directory.


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