NAME

       udev_new, udev_ref, udev_unref - Create, acquire and release a udev context object

SYNOPSIS

       #include <libudev.h>

       struct udev *udev_new(void);

       struct udev *udev_ref(struct udev *udev);

       struct udev *udev_unref(struct udev *udev);

DESCRIPTION

       udev_new() allocates a new udev context object and returns a pointer to it. This object is
       opaque and must not be accessed by the caller via different means than functions provided
       by libudev. Initially, the reference count of the context is 1. You can acquire further
       references, and drop gained references via udev_ref() and udev_unref(). Once the reference
       count hits 0, the context object is destroyed and freed.

RETURN VALUE

       On success, udev_new() returns a pointer to the allocated udev context. On failure, NULL
       is returned.  udev_ref() returns the argument that it was passed, unmodified.
       udev_unref() always returns NULL.

HISTORY

       udev_new(), udev_ref(), and udev_unref() were added in version 221.

SEE ALSO

       systemd(1),