Fixed race condition in install script

Signed-off-by: Alexandro Sanchez Bach <[email protected]>

Author: AlexAltea

platforms/linux/haxm-install.sh

@@ -19,6 +19,21 @@ groupadd -f $GRPNAME
 echo "KERNEL==\"${DEVNAME}\", GROUP=\"${GRPNAME}\", MODE=\"0660\"" \
     > /lib/udev/rules.d/99-haxm.rules
 
+# Wait for device
+limit=3
+attempts=0
+while [ ! -c /dev/$DEVNAME ]; do
+    if [ $attempts -ge $limit ]; then
+        echo 'HAXM installation error: No device detected!'
+        exit 1
+    fi
+    let attempts++
+    echo "Waiting for device... (attempt $attempts of $limit)"
+    sleep 1
+done
+
 # Adjust device permissions
 chown root:$GRPNAME /dev/$DEVNAME
 chmod 660 /dev/$DEVNAME
+
+echo 'HAXM successfully installed'

platforms/linux/haxm-uninstall.sh

@@ -17,3 +17,5 @@ sed -i "/^${MODNAME}$/d" /etc/modules
 
 # Unload kernel module
 modprobe -r $MODNAME
+
+echo 'HAXM successfully uninstalled'