udev_enumerate_new

systemd

udev_enumerate_new

udev_enumerate_ref

udev_enumerate_unref

Create, acquire and release a udev enumerate object

#include <libudev.h>

struct udev_enumerate *

udev_enumerate_new

struct udev *

udev

struct udev_enumerate *

udev_enumerate_ref

struct udev_enumerate *

udev_enumerate

struct udev_enumerate *

udev_enumerate_unref

struct udev_enumerate *

udev_enumerate

Description

udev_enumerate_new() creates an enumeration context to scan /sys/.

udev_enumerate_ref() takes a reference of an enumeration context.

udev_enumerate_unref() drops a reference of an enumeration context. If the refcount reaches zero, all resources of the enumeration context will be released.

Return Value

On success, udev_enumerate_new() returns a pointer to the allocated enumeration object. On failure, NULL is returned. udev_enumerate_ref() returns the argument that it was passed, unmodified. udev_enumerate_unref() always returns NULL.

History

udev_enumerate_new(), udev_enumerate_ref(), and udev_enumerate_unref() were added in version 221.