https://issues.apache.org/bugzilla/show_bug.cgi?id=51704
Bug #: 51704
Summary: Dubious use of mkdirs() return code in juli
FileHandler
Product: Tomcat 7
Version: trunk
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
File#mkdirs() only returns true if the method created the directory itself.
If mkdirs() returns false, it is still possible for the directory to exist.
Thus the code in FileHandler at [1], i.e.
364 // Create the directory if necessary
365 File dir = new File(directory);
366 if (!dir.exists() && !dir.mkdirs()) {
367 reportError("Unable to create [" + dir + "]", null,
368 ErrorManager.OPEN_FAILURE);
369 writer = null;
370 return;
371 }
can generate an error even though the directory now exists.
It would be safer to code the check as follows:
366 if (!dir.mkdirs() && !dir.exists()) {
There is no need to call dir.exists() before mkdirs() as mkdirs() does that
anyway.
There is similar code at [2] and possibly elsewhere in Tomcat, I did not check.
[1]
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/juli/FileHandler.java?view=markup#l364
[1]
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/juli/FileHandler.java?view=markup#l379
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