arm: Error if iface=ide and skip tests that use iface=ide.

ARM doesn't support IDE.  (Well, that's not entirely true as I found a
reference to one extremely obscure ARM board that had IDE disks, but
qemu-system-arm doesn't appear to support them).

src/launch-direct.c

@@ -419,6 +419,12 @@ launch_direct (guestfs_h *g, void *datav, const char *arg)
      */
     if (drv->iface && STREQ (drv->iface, "virtio")) /* virtio-blk */
       goto virtio_blk;
+#ifdef __arm__
+    else if (drv->iface && STREQ (drv->iface, "ide")) {
+      error (g, "'ide' interface does not work on ARM");
+      goto cleanup0;
+    }
+#endif
     else if (drv->iface) {
       ADD_CMDLINE ("-drive");
       ADD_CMDLINE_PRINTF ("%s,if=%s", param, drv->iface);

tests/regressions/rhbz690819.sh

@@ -28,6 +28,12 @@ if [ -n "$SKIP_TEST_RHBZ690819_SH" ]; then
     exit 77
 fi
 
+arch="$(uname -m)"
+if [[ "$arch" =~ ^arm ]]; then
+    echo "$0: test skipped because ARM does not support 'ide' interface."
+    exit 77
+fi
+
 backend="$(../../fish/guestfish get-backend)"
 if [[ "$backend" =~ ^libvirt ]]; then
     echo "$0: test skipped because backend ($backend) is 'libvirt'."

tests/regressions/rhbz975797.sh

@@ -28,6 +28,12 @@ if [ -n "$SKIP_TEST_RHBZ690819_SH" ]; then
     exit 77
 fi
 
+arch="$(uname -m)"
+if [[ "$arch" =~ ^arm ]]; then
+    echo "$0: test skipped because ARM does not support 'ide' interface."
+    exit 77
+fi
+
 backend="$(../../fish/guestfish get-backend)"
 if [[ "$backend" =~ ^libvirt ]]; then
     echo "$0: test skipped because backend ($backend) is 'libvirt'."