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https://github.com/libratbag/libratbag.git
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fcda14df61
We don't need the evdev fd, it's more flexible to start with a udev device. This changes ratbag-command to take a /sys path as well, but for not it'll do. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/*
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* Copyright © 2008-2011 Kristian Høgsberg
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* Copyright © 2011 Intel Corporation
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* Copyright © 2013-2015 Red Hat, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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/*
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* This list data structure is verbatim copy from wayland-util.h from the
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* Wayland project; except that wl_ prefix has been removed.
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*/
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#include "config.h"
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#include <ctype.h>
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#include <locale.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "libratbag-util.h"
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#include "libratbag-private.h"
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void
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list_init(struct list *list)
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{
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list->prev = list;
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list->next = list;
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}
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void
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list_insert(struct list *list, struct list *elm)
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{
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elm->prev = list;
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elm->next = list->next;
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list->next = elm;
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elm->next->prev = elm;
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}
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void
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list_remove(struct list *elm)
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{
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elm->prev->next = elm->next;
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elm->next->prev = elm->prev;
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elm->next = NULL;
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elm->prev = NULL;
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}
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int
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list_empty(const struct list *list)
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{
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return list->next == list;
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}
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const char *
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udev_prop_value(struct udev_device *device,
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const char *prop_name)
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{
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struct udev_device *parent;
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const char *prop_value = NULL;
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parent = device;
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while (parent && !prop_value) {
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prop_value = udev_device_get_property_value(parent, prop_name);
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parent = udev_device_get_parent(parent);
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}
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return prop_value;
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}
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