fix(travis): add check to verify existence of udev (#1619)

Signed-off-by: mittachaitu <[email protected]>

.travis.yml

@@ -19,6 +19,11 @@ addons:
   apt:
     update: true
 
+before_install:
+  - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+  - sudo apt-get update -qq
+  - sudo apt-get install --yes -qq gcc
+  - sudo apt-get install --yes -qq libudev-dev
 install:
   - make bootstrap
   - make format

ci/travis-ci.sh

@@ -25,10 +25,16 @@ rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi
 
 curl https://raw.githubusercontent.com/openebs/openebs/master/k8s/ci/test-script.sh > test-script.sh
 
-# append mayactl tests to this script 
+## Compile udev c code and build binary in /var/openebs/sparse
+echo "Creating /var/openebs/sparse/udev_checks directory"
+sudo mkdir -p /var/openebs/sparse/udev_checks
+echo "Compiling and building the binary"
+sudo gcc ci/udev_check.c -ludev -o /var/openebs/sparse/udev_checks/udev_check
+
+# append mayactl tests to this script
 cat ./ci/mayactl.sh >> ./test-script.sh
 
-# append local pv tests to this script 
+# append local pv tests to this script
 #cat ./ci/local_pv.sh >> ./test-script.sh
 
 chmod +x test-script.sh && ./test-script.sh

ci/udev_check.c

@@ -0,0 +1,42 @@
+#include <libudev.h>
+#include <stdio.h>
+#include <errno.h>
+
+int main(int argc, char **argv)
+{
+	char *device;
+	struct udev *udev;
+	struct udev_device *dev = NULL;
+	int initialized = -1;
+	int rc = -1;
+
+	if ((udev = udev_new()) == NULL) {
+	        fprintf(stderr, "failed to get udev device\n");
+	        return (-1);
+	}
+
+	if (argc > 1) {
+	        device = argv[1];
+	} else {
+	        fprintf(stderr, "device is not provided\n");
+	        return (-1);
+	}
+
+	dev = udev_device_new_from_subsystem_sysname(udev, "block", device);
+
+	/* https://github.com/jcnelson/vdev/blob/ceb7a6c4f44dec542dc1c3c3d5abd27dec7f3e0e/libudev-compat/libudev-device.c#L1772
+	 * From above code comments udev_device_get_is_initialized
+	 * Returns: 1 if the device is set up. 0 otherwise.
+	 */
+	if ((dev != NULL) && (rc = udev_device_get_is_initialized(dev)) == 1) {
+		printf("device = %s is initialized by udev\n", device);
+		initialized = 0;
+	} else {
+	        printf("device = %s is not initialized by udev errno: %d\n", device, errno);
+	}
+
+	udev_device_unref(dev);
+	udev_unref(udev);
+	return initialized;
+}
+