User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |

---

   udev_ref    ( 3 )

---

---

Имя (Name)

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

---

Синопсис (Synopsis)

#include <libudev.h>

       struct udev *udev_new(void);

       struct udev *udev_ref(struct udev *udev);

       struct udev *udev_unref(struct udev *udev);

---

Описание (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.

---

Возвращаемое значение (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.

---

Смотри также (See also)

systemd(1),

---