udev_new(3) — Linux manual page

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 2020-12-18.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2020-12-18.)  If you discover 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 247                                                  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)