libudev: add udev_device_new_from_devnum()

[elogind.git] / udev / lib / test-libudev.c

diff --git a/udev/lib/test-libudev.c b/udev/lib/test-libudev.c
index 0a0d754b38e34441453256efeb5f6e8d7271e730..8afd294a2fb33873ce4ae55dcfcf8eeb30be1992 100644 (file)
--- a/udev/lib/test-libudev.c
+++ b/udev/lib/test-libudev.c
@@ -24,6 +24,7 @@
 #include <string.h>
 #include <getopt.h>
 #include <syslog.h>
+#include <fcntl.h>
 #include <sys/select.h>
 
 #include "libudev.h"
@@ -114,6 +115,20 @@ static int test_device_parents(struct udev *udev, const char *syspath)
        return 0;
 }
 
+static int test_device_devnum(struct udev *udev)
+{
+       dev_t devnum = makedev(1, 3);
+       struct udev_device *device;
+
+       printf("looking up device: %u:%u\n", major(devnum), minor(devnum));
+       device = udev_device_new_from_devnum(udev, 'c', devnum);
+       if (device == NULL)
+               return -1;
+       print_device(device);
+       udev_device_unref(device);
+       return 0;
+}
+
 static int devices_enum_cb(struct udev_device *device, void *data)
 {
        printf("device:    '%s' (%s) '%s'\n",
@@ -253,6 +268,7 @@ int main(int argc, char *argv[], char *envp[])
        }
 
        test_device(udev, syspath);
+       test_device_devnum(udev);
        test_device_parents(udev, syspath);
        test_enumerate(udev, subsystem);
        test_monitor(udev, socket);