529 lines
17 KiB
C
529 lines
17 KiB
C
/*
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* Copyright © 2009 Julien Cristau
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Julien Cristau <jcristau@debian.org>
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <libudev.h>
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#include <ctype.h>
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#include <unistd.h>
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#include "input.h"
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#include "inputstr.h"
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#include "hotplug.h"
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#include "config-backends.h"
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#include "os.h"
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#include "globals.h"
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#include "systemd-logind.h"
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#define UDEV_XKB_PROP_KEY "xkb"
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#define LOG_PROPERTY(path, prop, val) \
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LogMessageVerb(X_INFO, 10, \
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"config/udev: getting property %s on %s " \
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"returned \"%s\"\n", \
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(prop), (path), (val) ? (val) : "(null)")
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#define LOG_SYSATTR(path, attr, val) \
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LogMessageVerb(X_INFO, 10, \
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"config/udev: getting attribute %s on %s " \
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"returned \"%s\"\n", \
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(attr), (path), (val) ? (val) : "(null)")
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static struct udev_monitor *udev_monitor;
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#ifdef CONFIG_UDEV_KMS
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static void
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config_udev_odev_setup_attribs(const char *path, const char *syspath,
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int major, int minor,
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config_odev_probe_proc_ptr probe_callback);
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#endif
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static char itoa_buf[16];
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static const char *itoa(int i)
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{
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snprintf(itoa_buf, sizeof(itoa_buf), "%d", i);
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return itoa_buf;
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}
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static Bool
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check_seat(struct udev_device *udev_device)
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{
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const char *dev_seat;
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dev_seat = udev_device_get_property_value(udev_device, "ID_SEAT");
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if (!dev_seat)
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dev_seat = "seat0";
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if (SeatId && strcmp(dev_seat, SeatId))
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return FALSE;
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if (!SeatId && strcmp(dev_seat, "seat0"))
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return FALSE;
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return TRUE;
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}
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static void
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device_added(struct udev_device *udev_device)
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{
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const char *path, *name = NULL;
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char *config_info = NULL;
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const char *syspath;
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const char *tags_prop;
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const char *key, *value, *tmp;
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InputOption *input_options;
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InputAttributes attrs = { };
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DeviceIntPtr dev = NULL;
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struct udev_list_entry *set, *entry;
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struct udev_device *parent;
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int rc;
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dev_t devnum;
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path = udev_device_get_devnode(udev_device);
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syspath = udev_device_get_syspath(udev_device);
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if (!path || !syspath)
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return;
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if (!check_seat(udev_device))
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return;
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devnum = udev_device_get_devnum(udev_device);
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#ifdef CONFIG_UDEV_KMS
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if (!strcmp(udev_device_get_subsystem(udev_device), "drm")) {
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const char *sysname = udev_device_get_sysname(udev_device);
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if (strncmp(sysname, "card", 4) != 0)
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return;
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/* Check for devices already added through xf86platformProbe() */
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if (xf86_find_platform_device_by_devnum(major(devnum), minor(devnum)))
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return;
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LogMessage(X_INFO, "config/udev: Adding drm device (%s)\n", path);
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config_udev_odev_setup_attribs(path, syspath, major(devnum),
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minor(devnum), NewGPUDeviceRequest);
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return;
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}
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#endif
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value = udev_device_get_property_value(udev_device, "ID_INPUT");
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if (!value || !strcmp(value, "0")) {
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LogMessageVerb(X_INFO, 10,
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"config/udev: ignoring device %s without "
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"property ID_INPUT set\n", path);
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return;
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}
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input_options = input_option_new(NULL, "_source", "server/udev");
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if (!input_options)
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return;
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parent = udev_device_get_parent(udev_device);
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if (parent) {
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const char *ppath = udev_device_get_devnode(parent);
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const char *product = udev_device_get_property_value(parent, "PRODUCT");
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const char *pnp_id = udev_device_get_sysattr_value(parent, "id");
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unsigned int usb_vendor, usb_model;
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name = udev_device_get_sysattr_value(parent, "name");
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LOG_SYSATTR(ppath, "name", name);
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if (!name) {
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name = udev_device_get_property_value(parent, "NAME");
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LOG_PROPERTY(ppath, "NAME", name);
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}
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/* construct USB ID in lowercase hex - "0000:ffff" */
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if (product &&
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sscanf(product, "%*x/%4x/%4x/%*x", &usb_vendor, &usb_model) == 2) {
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char *usb_id;
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if (asprintf(&usb_id, "%04x:%04x", usb_vendor, usb_model)
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== -1)
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usb_id = NULL;
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else
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LOG_PROPERTY(ppath, "PRODUCT", product);
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attrs.usb_id = usb_id;
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}
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while (!pnp_id && (parent = udev_device_get_parent(parent))) {
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pnp_id = udev_device_get_sysattr_value(parent, "id");
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if (!pnp_id)
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continue;
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attrs.pnp_id = strdup(pnp_id);
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ppath = udev_device_get_devnode(parent);
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LOG_SYSATTR(ppath, "id", pnp_id);
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}
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}
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if (!name)
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name = "(unnamed)";
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else
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attrs.product = strdup(name);
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input_options = input_option_new(input_options, "name", name);
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input_options = input_option_new(input_options, "path", path);
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input_options = input_option_new(input_options, "device", path);
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input_options = input_option_new(input_options, "major", itoa(major(devnum)));
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input_options = input_option_new(input_options, "minor", itoa(minor(devnum)));
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if (path)
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attrs.device = strdup(path);
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tags_prop = udev_device_get_property_value(udev_device, "ID_INPUT.tags");
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LOG_PROPERTY(path, "ID_INPUT.tags", tags_prop);
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attrs.tags = xstrtokenize(tags_prop, ",");
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if (asprintf(&config_info, "udev:%s", syspath) == -1) {
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config_info = NULL;
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goto unwind;
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}
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if (device_is_duplicate(config_info)) {
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LogMessage(X_WARNING, "config/udev: device %s already added. "
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"Ignoring.\n", name);
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goto unwind;
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}
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set = udev_device_get_properties_list_entry(udev_device);
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udev_list_entry_foreach(entry, set) {
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key = udev_list_entry_get_name(entry);
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if (!key)
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continue;
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value = udev_list_entry_get_value(entry);
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if (!strncasecmp(key, UDEV_XKB_PROP_KEY, sizeof(UDEV_XKB_PROP_KEY) - 1)) {
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LOG_PROPERTY(path, key, value);
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tmp = key + sizeof(UDEV_XKB_PROP_KEY) - 1;
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if (!strcasecmp(tmp, "rules"))
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input_options =
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input_option_new(input_options, "xkb_rules", value);
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else if (!strcasecmp(tmp, "layout"))
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input_options =
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input_option_new(input_options, "xkb_layout", value);
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else if (!strcasecmp(tmp, "variant"))
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input_options =
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input_option_new(input_options, "xkb_variant", value);
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else if (!strcasecmp(tmp, "model"))
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input_options =
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input_option_new(input_options, "xkb_model", value);
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else if (!strcasecmp(tmp, "options"))
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input_options =
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input_option_new(input_options, "xkb_options", value);
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}
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else if (!strcmp(key, "ID_VENDOR")) {
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LOG_PROPERTY(path, key, value);
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attrs.vendor = strdup(value);
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} else if (!strncmp(key, "ID_INPUT_", 9)) {
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const struct pfmap {
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const char *property;
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unsigned int flag;
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} map[] = {
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{ "ID_INPUT_KEY", ATTR_KEY },
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{ "ID_INPUT_KEYBOARD", ATTR_KEYBOARD },
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{ "ID_INPUT_MOUSE", ATTR_POINTER },
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{ "ID_INPUT_JOYSTICK", ATTR_JOYSTICK },
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{ "ID_INPUT_TABLET", ATTR_TABLET },
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{ "ID_INPUT_TABLET_PAD", ATTR_TABLET_PAD },
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{ "ID_INPUT_TOUCHPAD", ATTR_TOUCHPAD },
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{ "ID_INPUT_TOUCHSCREEN", ATTR_TOUCHSCREEN },
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{ NULL, 0 },
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};
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/* Anything but the literal string "0" is considered a
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* boolean true. The empty string isn't a thing with udev
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* properties anyway */
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if (value && strcmp(value, "0")) {
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const struct pfmap *m = map;
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while (m->property != NULL) {
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if (!strcmp(m->property, key)) {
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LOG_PROPERTY(path, key, value);
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attrs.flags |= m->flag;
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}
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m++;
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}
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}
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}
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}
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input_options = input_option_new(input_options, "config_info", config_info);
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/* Default setting needed for non-seat0 seats */
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if (ServerIsNotSeat0())
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input_options = input_option_new(input_options, "GrabDevice", "on");
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LogMessage(X_INFO, "config/udev: Adding input device %s (%s)\n",
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name, path);
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rc = NewInputDeviceRequest(input_options, &attrs, &dev);
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if (rc != Success)
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goto unwind;
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unwind:
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free(config_info);
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input_option_free_list(&input_options);
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free(attrs.usb_id);
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free(attrs.pnp_id);
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free(attrs.product);
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free(attrs.device);
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free(attrs.vendor);
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if (attrs.tags) {
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char **tag = attrs.tags;
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while (*tag) {
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free(*tag);
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tag++;
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}
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free(attrs.tags);
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}
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return;
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}
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static void
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device_removed(struct udev_device *device)
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{
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char *value;
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const char *syspath = udev_device_get_syspath(device);
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#ifdef CONFIG_UDEV_KMS
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if (!strcmp(udev_device_get_subsystem(device), "drm")) {
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const char *sysname = udev_device_get_sysname(device);
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const char *path = udev_device_get_devnode(device);
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dev_t devnum = udev_device_get_devnum(device);
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if ((strncmp(sysname,"card", 4) != 0) || (path == NULL))
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return;
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LogMessage(X_INFO, "config/udev: removing GPU device %s %s\n",
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syspath, path);
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config_udev_odev_setup_attribs(path, syspath, major(devnum),
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minor(devnum), DeleteGPUDeviceRequest);
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/* Retry vtenter after a drm node removal */
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systemd_logind_vtenter();
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return;
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}
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#endif
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if (asprintf(&value, "udev:%s", syspath) == -1)
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return;
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remove_devices("udev", value);
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free(value);
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}
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static void
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socket_handler(int fd, int ready, void *data)
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{
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struct udev_device *udev_device;
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const char *action;
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input_lock();
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udev_device = udev_monitor_receive_device(udev_monitor);
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if (!udev_device) {
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input_unlock();
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return;
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}
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action = udev_device_get_action(udev_device);
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if (action) {
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if (!strcmp(action, "add")) {
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device_removed(udev_device);
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device_added(udev_device);
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} else if (!strcmp(action, "change")) {
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/* ignore change for the drm devices */
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if (strcmp(udev_device_get_subsystem(udev_device), "drm")) {
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device_removed(udev_device);
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device_added(udev_device);
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}
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}
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else if (!strcmp(action, "remove"))
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device_removed(udev_device);
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}
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udev_device_unref(udev_device);
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input_unlock();
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}
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int
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config_udev_pre_init(void)
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{
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struct udev *udev;
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udev = udev_new();
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if (!udev)
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return 0;
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udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
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if (!udev_monitor)
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return 0;
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udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "input",
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NULL);
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/* For Wacom serial devices */
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udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL);
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#ifdef CONFIG_UDEV_KMS
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/* For output GPU devices */
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udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "drm", NULL);
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#endif
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#ifdef HAVE_UDEV_MONITOR_FILTER_ADD_MATCH_TAG
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if (ServerIsNotSeat0())
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udev_monitor_filter_add_match_tag(udev_monitor, SeatId);
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#endif
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if (udev_monitor_enable_receiving(udev_monitor)) {
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ErrorF("config/udev: failed to bind the udev monitor\n");
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return 0;
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}
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return 1;
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}
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int
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config_udev_init(void)
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{
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struct udev *udev;
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struct udev_enumerate *enumerate;
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struct udev_list_entry *devices, *device;
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udev = udev_monitor_get_udev(udev_monitor);
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enumerate = udev_enumerate_new(udev);
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if (!enumerate)
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return 0;
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udev_enumerate_add_match_subsystem(enumerate, "input");
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udev_enumerate_add_match_subsystem(enumerate, "tty");
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#ifdef CONFIG_UDEV_KMS
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udev_enumerate_add_match_subsystem(enumerate, "drm");
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#endif
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#ifdef HAVE_UDEV_ENUMERATE_ADD_MATCH_TAG
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if (ServerIsNotSeat0())
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udev_enumerate_add_match_tag(enumerate, SeatId);
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#endif
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udev_enumerate_scan_devices(enumerate);
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devices = udev_enumerate_get_list_entry(enumerate);
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udev_list_entry_foreach(device, devices) {
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const char *syspath = udev_list_entry_get_name(device);
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struct udev_device *udev_device =
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udev_device_new_from_syspath(udev, syspath);
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/* Device might be gone by the time we try to open it */
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if (!udev_device)
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continue;
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device_added(udev_device);
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udev_device_unref(udev_device);
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}
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udev_enumerate_unref(enumerate);
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SetNotifyFd(udev_monitor_get_fd(udev_monitor), socket_handler, X_NOTIFY_READ, NULL);
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return 1;
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}
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void
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config_udev_fini(void)
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{
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struct udev *udev;
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if (!udev_monitor)
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return;
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udev = udev_monitor_get_udev(udev_monitor);
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RemoveNotifyFd(udev_monitor_get_fd(udev_monitor));
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udev_monitor_unref(udev_monitor);
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udev_monitor = NULL;
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udev_unref(udev);
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}
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#ifdef CONFIG_UDEV_KMS
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static void
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config_udev_odev_setup_attribs(const char *path, const char *syspath,
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int major, int minor,
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config_odev_probe_proc_ptr probe_callback)
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{
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struct OdevAttributes *attribs = config_odev_allocate_attributes();
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attribs->path = XNFstrdup(path);
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attribs->syspath = XNFstrdup(syspath);
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attribs->major = major;
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attribs->minor = minor;
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/* ownership of attribs is passed to probe layer */
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probe_callback(attribs);
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}
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void
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config_udev_odev_probe(config_odev_probe_proc_ptr probe_callback)
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{
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struct udev *udev;
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struct udev_enumerate *enumerate;
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struct udev_list_entry *devices, *device;
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udev = udev_monitor_get_udev(udev_monitor);
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enumerate = udev_enumerate_new(udev);
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if (!enumerate)
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return;
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udev_enumerate_add_match_subsystem(enumerate, "drm");
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udev_enumerate_add_match_sysname(enumerate, "card[0-9]*");
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#ifdef HAVE_UDEV_ENUMERATE_ADD_MATCH_TAG
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if (ServerIsNotSeat0())
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udev_enumerate_add_match_tag(enumerate, SeatId);
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#endif
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udev_enumerate_scan_devices(enumerate);
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devices = udev_enumerate_get_list_entry(enumerate);
|
|
udev_list_entry_foreach(device, devices) {
|
|
const char *syspath = udev_list_entry_get_name(device);
|
|
struct udev_device *udev_device = udev_device_new_from_syspath(udev, syspath);
|
|
const char *path = udev_device_get_devnode(udev_device);
|
|
const char *sysname = udev_device_get_sysname(udev_device);
|
|
dev_t devnum = udev_device_get_devnum(udev_device);
|
|
|
|
if (!path || !syspath)
|
|
goto no_probe;
|
|
else if (strcmp(udev_device_get_subsystem(udev_device), "drm") != 0)
|
|
goto no_probe;
|
|
else if (strncmp(sysname, "card", 4) != 0)
|
|
goto no_probe;
|
|
else if (!check_seat(udev_device))
|
|
goto no_probe;
|
|
|
|
config_udev_odev_setup_attribs(path, syspath, major(devnum),
|
|
minor(devnum), probe_callback);
|
|
no_probe:
|
|
udev_device_unref(udev_device);
|
|
}
|
|
udev_enumerate_unref(enumerate);
|
|
return;
|
|
}
|
|
#endif
|
|
|