From 43db06ea892cc157324a6b837ca430607441c509 Mon Sep 17 00:00:00 2001
From: Richard Jones <rjones@redhat.com>
Date: Wed, 22 Apr 2009 09:00:39 +0100
Subject: Allow qemu binary to be overridden at runtime.

---
 java/com/redhat/et/libguestfs/GuestFS.java | 50 ++++++++++++++++++++++++++++++
 java/com_redhat_et_libguestfs_GuestFS.c    | 32 +++++++++++++++++++
 2 files changed, 82 insertions(+)

(limited to 'java')

diff --git a/java/com/redhat/et/libguestfs/GuestFS.java b/java/com/redhat/et/libguestfs/GuestFS.java
index 8c2265e7..119a2df1 100644
--- a/java/com/redhat/et/libguestfs/GuestFS.java
+++ b/java/com/redhat/et/libguestfs/GuestFS.java
@@ -218,6 +218,56 @@ public class GuestFS {
   private native void _config (long g, String qemuparam, String qemuvalue)
     throws LibGuestFSException;
 
+  /**
+   * set the qemu binary
+   *
+   * Set the qemu binary that we will use.
+   * 
+   * The default is chosen when the library was compiled by
+   * the configure script.
+   * 
+   * You can also override this by setting the
+   * "LIBGUESTFS_QEMU" environment variable.
+   * 
+   * The string "qemu" is stashed in the libguestfs handle,
+   * so the caller must make sure it remains valid for the
+   * lifetime of the handle.
+   * 
+   * Setting "qemu" to "NULL" restores the default qemu
+   * binary.
+   * 
+   * @throws LibGuestFSException
+   */
+  public void set_qemu (String qemu)
+    throws LibGuestFSException
+  {
+    if (g == 0)
+      throw new LibGuestFSException ("set_qemu: handle is closed");
+    _set_qemu (g, qemu);
+  }
+  private native void _set_qemu (long g, String qemu)
+    throws LibGuestFSException;
+
+  /**
+   * get the qemu binary
+   *
+   * Return the current qemu binary.
+   * 
+   * This is always non-NULL. If it wasn't set already, then
+   * this will return the default qemu binary name.
+   * 
+   * @throws LibGuestFSException
+   */
+  public String get_qemu ()
+    throws LibGuestFSException
+  {
+    if (g == 0)
+      throw new LibGuestFSException ("get_qemu: handle is closed");
+    return _get_qemu (g);
+  }
+  private native String _get_qemu (long g)
+    throws LibGuestFSException;
+
   /**
    * set the search path
    *
diff --git a/java/com_redhat_et_libguestfs_GuestFS.c b/java/com_redhat_et_libguestfs_GuestFS.c
index 51412780..550568b8 100644
--- a/java/com_redhat_et_libguestfs_GuestFS.c
+++ b/java/com_redhat_et_libguestfs_GuestFS.c
@@ -157,6 +157,38 @@ Java_com_redhat_et_libguestfs_GuestFS__1config
   }
 }
 
+JNIEXPORT void JNICALL
+Java_com_redhat_et_libguestfs_GuestFS__1set_1qemu
+  (JNIEnv *env, jobject obj, jlong jg, jstring jqemu)
+{
+  guestfs_h *g = (guestfs_h *) jg;
+  int r;
+  const char *qemu;
+
+  qemu = (*env)->GetStringUTFChars (env, jqemu, NULL);
+  r = guestfs_set_qemu (g, qemu);
+  (*env)->ReleaseStringUTFChars (env, jqemu, qemu);
+  if (r == -1) {
+    throw_exception (env, guestfs_last_error (g));
+    return ;
+  }
+}
+
+JNIEXPORT jstring JNICALL
+Java_com_redhat_et_libguestfs_GuestFS__1get_1qemu
+  (JNIEnv *env, jobject obj, jlong jg)
+{
+  guestfs_h *g = (guestfs_h *) jg;
+  const char *r;
+
+  r = guestfs_get_qemu (g);
+  if (r == NULL) {
+    throw_exception (env, guestfs_last_error (g));
+    return NULL;
+  }
+  return (*env)->NewStringUTF (env, r);
+}
+
 JNIEXPORT void JNICALL
 Java_com_redhat_et_libguestfs_GuestFS__1set_1path
   (JNIEnv *env, jobject obj, jlong jg, jstring jpath)
-- 
cgit