CreateImageWizard: File system configuration

src/Components/CreateImageWizard/validators/fileSystemConfigurationValidator.js

@@ -0,0 +1,30 @@
+const FileSystemConfigurationValidator = () => fsc => {
+    if (!fsc) {
+        return undefined;
+    }
+
+    let mpFreqs = {};
+    for (const fs of fsc) {
+        const mp = fs.mountpoint;
+        if (mp in mpFreqs) {
+            mpFreqs[mp]++;
+        } else {
+            mpFreqs[mp] = 1;
+        }
+    }
+
+    let duplicates = [];
+    for (const [ k, v ] of Object.entries(mpFreqs)) {
+        if (v > 1) {
+            duplicates.push(k);
+        }
+    }
+
+    let root = mpFreqs['/'] >= 1;
+    return duplicates.length === 0 && root ? undefined : {
+        duplicates: duplicates === [] ? undefined : duplicates,
+        root,
+    };
+};
+
+export default FileSystemConfigurationValidator;

src/Components/CreateImageWizard/validators/index.js

@@ -0,0 +1 @@
+export { default as fileSystemConfigurationValidator } from './fileSystemConfigurationValidator';