NationalSecurityAgency/ghidra · error · IOException

: is not a directory

Error message

{dir.getAbsolutePath()}: is not a directory

What it means

Thrown by establishTemporaryDirectory when the target path exists (dir.exists() is true) but is not a directory (dir.isDirectory() is false). This means a regular file occupies the path that should be a directory. The code cannot proceed because it needs to write files into this directory.

Solutions

1. Remove or rename the file at the conflicting path.
2. Change the xmldir parameter to point to a valid directory location.
3. If using the default temp path, remove the stray file from the temp directory manually.
4. Investigate what created the file — it may indicate a bug in a prior step.

Example fix

// before
else if (dir.isDirectory() == false) {
    throw new IOException(dir.getAbsolutePath() + ": is not a directory");
}

// after — distinguish file vs symlink vs other
else if (dir.isDirectory() == false) {
    throw new IOException(dir.getAbsolutePath() + ": exists as a " +
        (dir.isFile() ? "regular file" : "non-directory entry") +
        "; remove it or specify a different xmldir");
}

// Check that the path is not occupied by a non-directory entry
if (dir.exists() && !dir.isDirectory()) {
    throw new IllegalStateException(
        "Path occupied by non-directory entry: " + dir.getAbsolutePath() +
        ". Remove it or use a different path.");
}

public static boolean isPathAvailableForDirectory(File dir) {
    return !dir.exists() || dir.isDirectory();
}

try {
    File dir = bulk.establishTemporaryDirectory(xmldir);
} catch (IOException e) {
    if (e.getMessage().contains("is not a directory")) {
        // The path is a file — try removing it or use alternate location
        File conflict = new File(xmldir);
        if (conflict.isFile()) {
            conflict.delete();
        }
        File dir = bulk.establishTemporaryDirectory(xmldir);
    } else {
        throw e;
    }
}

When it happens

Trigger: A previous process or manual operation created a regular file at the path where the code expects a directory. This is the else-if branch after the mkdir path, so the path already exists as something other than a directory.

Common situations: A prior failed run left a file named 'bulkinsert_xml' instead of a directory; a user accidentally created a file with the same name; the xmldir parameter points to a path occupied by a file; a symlink pointing to a file rather than a directory.

Related errors

• Could not list files in temp directory
• Unable to create temp directory
• Unable to delete temp directory
• Unable to delete temporary file
• Could not find temporary directory

AI-assisted analysis of NationalSecurityAgency/ghidra@d5f144c24d (2026-08-14). Data as JSON: /api/errors/dcea394ad56d0585. Report an issue: GitHub.

Appendix: source

Thrown at Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/ingest/BulkSignatures.java:1033

		File dir;
		if (xmldir == null) {
			File tmpDir = Application.getUserTempDirectory();
			if (tmpDir == null) {
				throw new IOException("Could not find temporary directory");
			}
			dir = new File(tmpDir, "bulkinsert_xml");
			deleteTemporaryDirectory(dir);
		}
		else {
			dir = new File(xmldir);
		}
		if (dir.exists() == false) {
			if (dir.mkdir() == false) {
				throw new IOException("Unable to create temp directory: " + dir.getAbsolutePath());
			}
		}
		else if (dir.isDirectory() == false) {
			throw new IOException(dir.getAbsolutePath() + ": is not a directory");
		}
		dir = dir.getCanonicalFile();
		return dir;
	}

	private void deleteTemporaryDirectory(File tempDir) throws IOException {
		if (!tempDir.exists()) {
			return;
		}
		File[] listFiles = tempDir.listFiles();
		if (listFiles == null) {
			throw new IOException(
				"Could not list files in temp directory: " + tempDir.getAbsolutePath());
		}
		for (File listFile : listFiles) {
			if (!listFile.delete()) {
				throw new IOException(
					"Unable to delete temporary file: " + listFile.getAbsolutePath());

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