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UDEV_NEW
Section: udev_new (3) Updated: Index
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NAME
udev_new, udev_ref, udev_unref - Create, acquire and release a udev context object
SYNOPSIS
#include <libudev.h>
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struct udev *udev_new(void);
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struct udev *udev_ref(struct udev *udev);
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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), system-udevd.service(8)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- HISTORY
-
- SEE ALSO
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