Add support for zerofree command.

2 files changed, 43 insertions, 0 deletions

diff --git a/java/com/redhat/et/libguestfs/GuestFS.java b/java/com/redhat/et/libguestfs/GuestFS.java
index c816baa0..76ada908 100644
--- a/java/com/redhat/et/libguestfs/GuestFS.java
+++ b/java/com/redhat/et/libguestfs/GuestFS.java
@@ -2729,4 +2729,30 @@ public class GuestFS {
   private native String _hexdump (long g, String path)
     throws LibGuestFSException;
 
+  /**
+   * zero unused inodes and disk blocks on ext2/3 filesystem
+   *
+   * This runs the *zerofree* program on "device". This
+   * program claims to zero unused inodes and disk blocks on
+   * an ext2/3 filesystem, thus making it possible to
+   * compress the filesystem more effectively.
+   * 
+   * You should not run this program if the filesystem is
+   * mounted.
+   * 
+   * It is possible that using this program can damage the
+   * filesystem or data on the filesystem.
+   * 
+   * @throws LibGuestFSException
+   */
+  public void zerofree (String device)
+    throws LibGuestFSException
+  {
+    if (g == 0)
+      throw new LibGuestFSException ("zerofree: handle is closed");
+    _zerofree (g, device);
+  }
+  private native void _zerofree (long g, String device)
+    throws LibGuestFSException;
+
 }
diff --git a/java/com_redhat_et_libguestfs_GuestFS.c b/java/com_redhat_et_libguestfs_GuestFS.c
index ce1f2dbf..a823d84e 100644
--- a/java/com_redhat_et_libguestfs_GuestFS.c
+++ b/java/com_redhat_et_libguestfs_GuestFS.c
@@ -2722,3 +2722,20 @@ Java_com_redhat_et_libguestfs_GuestFS__1hexdump
   return jr;
 }
 
+JNIEXPORT void JNICALL
+Java_com_redhat_et_libguestfs_GuestFS__1zerofree
+  (JNIEnv *env, jobject obj, jlong jg, jstring jdevice)
+{
+  guestfs_h *g = (guestfs_h *) (long) jg;
+  int r;
+  const char *device;
+
+  device = (*env)->GetStringUTFChars (env, jdevice, NULL);
+  r = guestfs_zerofree (g, device);
+  (*env)->ReleaseStringUTFChars (env, jdevice, device);
+  if (r == -1) {
+    throw_exception (env, guestfs_last_error (g));
+    return ;
+  }
+}
+