udev_enumerate_new(3)

.SH "NAME" udev_enumerate_new, udev_enumerate_ref, udev_enumerate_unref - Create, acquire and release a udev enumerate object

.SH "SYNOPSIS"

#include <libudev.h>

.HP 1008u struct udev_enumerate *udev_enumerate_new(struct udev *udev);

.HP 1008u struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate);

.HP 1056u struct udev_enumerate *udev_enumerate_unref(struct udev_enumerate *udev_enumerate);

.SH "DESCRIPTION"

.PP udev_enumerate_new() creates an enumeration context to scan /sys/.

.PP udev_enumerate_ref() takes a reference of an enumeration context.

.PP udev_enumerate_unref() drops a reference of an enumeration context. If the refcount reaches zero, all resources of the enumeration context will be released.

.SH "RETURN VALUE"

.PP On success, udev_enumerate_new() returns a pointer to the allocated enumeration object. On failure, NULL is returned. udev_enumerate_ref() returns the argument that it was passed, unmodified. udev_enumerate_unref() always returns NULL.

.SH "HISTORY"

.PP udev_enumerate_new(), udev_enumerate_ref(), and udev_enumerate_unref() were added in version 221.

.SH "SEE ALSO"

.PP udev_new(3), udev_device_new_from_syspath(3), udev_enumerate_add_match_subsystem(3), udev_enumerate_scan_devices(3), udev_monitor_new_from_netlink(3), udev_list_entry(3), systemd(1)