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udev_new, udev_ref, udev_unref - Create, acquire and release a udev context object
Contents
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.
History
udev_new(), udev_ref(), and udev_unref() were added in version 221.
Name
udev_new, udev_ref, udev_unref - Create, acquire and release a udev context object
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.
See Also
systemd(1), systemd-udevd.service(8)
systemd 257.7 UDEV_NEW(3)
Synopsis
#include<libudev.h>structudev*udev_new(void);structudev*udev_ref(structudev*udev);structudev*udev_unref(structudev*udev);
