1UDEV_NEW(3) udev_new UDEV_NEW(3)
2
3
4
6 udev_new, udev_ref, udev_unref - Create, acquire and release a udev
7 context object
8
10 #include <libudev.h>
11
12 struct udev *udev_new(void);
13
14 struct udev *udev_ref(struct udev *udev);
15
16 struct udev *udev_unref(struct udev *udev);
17
19 udev_new() allocates a new udev context object and returns a pointer to
20 it. This object is opaque and must not be accessed by the caller via
21 different means than functions provided by libudev. Initially, the
22 reference count of the context is 1. You can acquire further
23 references, and drop gained references via udev_ref() and udev_unref().
24 Once the reference count hits 0, the context object is destroyed and
25 freed.
26
28 On success, udev_new() returns a pointer to the allocated udev context.
29 On failure, NULL is returned. udev_ref() returns the argument that it
30 was passed, unmodified. udev_unref() always returns NULL.
31
33 systemd(1),
34
35
36
37systemd 253 UDEV_NEW(3)