Allow creating containers

1 files changed, 48 insertions, 0 deletions

diff --git a/src/main/java/io/github/jshipit/Mount.java b/src/main/java/io/github/jshipit/Mount.java
new file mode 100644
index 0000000..63b60dd
--- /dev/null
+++ b/src/main/java/io/github/jshipit/Mount.java
@@ -0,0 +1,48 @@
+package io.github.jshipit;
+
+import com.sun.jna.Library;
+import com.sun.jna.Native;
+import com.sun.jna.Platform;
+
+public class Mount {
+    public interface CLibrary extends Library {
+        int mount(String source, String target,
+                  String filesystemtype, int mountflags,
+                  String data);
+
+        int umount(String target);
+    }
+
+    public void mount(String source, String target,
+                      String filesystemtype, int mountflags,
+                      String data) {
+        CLibrary libc;
+
+        if (Platform.isLinux()) {
+            libc = Native.load("c", CLibrary.class);
+            int result = libc.mount(source, target, filesystemtype, mountflags, data);
+            if (result == 0) {
+                System.out.println("Device mounted successfully.");
+            } else {
+                System.out.println("Device mount failed.");
+            }
+        }
+    }
+
+    public void overlayMount(String[] lower, String upper, String target) {
+        CLibrary libc;
+
+        if (Platform.isLinux()) {
+            libc = Native.load("c", CLibrary.class);
+            int result = libc.mount("overlay", target, "overlay", 0, "lowerdir="+String.join(":", lower)+",upperdir="+upper+",workdir="+target+"/work");
+            if (result == 0) {
+                System.out.println("Device mounted successfully.");
+            } else {
+                System.out.println("Device mount failed.");
+            }
+        } else {
+            System.out.println("Platform not supported.");
+            System.out.println("mount -t overlay overlay -o lowerdir="+String.join(":", lower)+",upperdir="+upper+",workdir="+target+"/work "+target);
+        }
+    }
+}