NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON

UDEV_NEW(3)                       udev_new                       UDEV_NEW(3)

NAME         top

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

SYNOPSIS         top

       #include <libudev.h>

       struct udev *udev_new(void);

       struct udev *udev_ref(struct udev *udev);

       struct udev *udev_unref(struct udev *udev);

DESCRIPTION         top

       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         top

       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         top

       systemd(1),

COLOPHON         top

       This page is part of the systemd (systemd system and service manager)
       project.  Information about the project can be found at 
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have a bug
       report for this manual page, see 
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.  This
       page was obtained from the project's upstream Git repository 
       ⟨https://github.com/systemd/systemd.git⟩ on 2017-05-03.  If you dis‐
       cover any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page, or
       you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org

systemd 233                                                      UDEV_NEW(3)

Pages that refer to this page: libudev(3)udev_device_get_syspath(3)udev_device_has_tag(3)udev_device_new_from_syspath(3)udev_enumerate_add_match_subsystem(3)udev_enumerate_new(3)udev_enumerate_scan_devices(3)udev_list_entry(3)udev_monitor_filter_update(3)udev_monitor_new_from_netlink(3)udev_monitor_receive_device(3)systemd.directives(7)systemd.index(7)