92ff79f1a8
config_odev* functions are called in code-paths were we already use XNF* functions in other places, so which are not oom safe already. Besides that oom is something which should simply never happen, so aborting when it does is as good a response as any other. While switching to XNF functions also fixup an unchecked strdup case. Note the function prototypes are kept unchanged, as they are part of the server ABI. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
258 lines
6.7 KiB
C
258 lines
6.7 KiB
C
/*
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* Copyright © 2006-2007 Daniel Stone
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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: Daniel Stone <daniel@fooishbar.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 <unistd.h>
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#include "os.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 "systemd-logind.h"
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void
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config_pre_init(void)
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{
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#ifdef CONFIG_UDEV
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if (!config_udev_pre_init())
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ErrorF("[config] failed to pre-init udev\n");
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#endif
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}
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void
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config_init(void)
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{
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#ifdef CONFIG_UDEV
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if (!config_udev_init())
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ErrorF("[config] failed to initialise udev\n");
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#elif defined(CONFIG_HAL)
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if (!config_hal_init())
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ErrorF("[config] failed to initialise HAL\n");
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#elif defined(CONFIG_WSCONS)
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if (!config_wscons_init())
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ErrorF("[config] failed to initialise wscons\n");
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#endif
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}
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void
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config_fini(void)
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{
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#if defined(CONFIG_UDEV)
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config_udev_fini();
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#elif defined(CONFIG_HAL)
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config_hal_fini();
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#elif defined(CONFIG_WSCONS)
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config_wscons_fini();
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#endif
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}
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void
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config_odev_probe(config_odev_probe_proc_ptr probe_callback)
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{
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#if defined(CONFIG_UDEV_KMS)
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config_udev_odev_probe(probe_callback);
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#endif
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}
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static void
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remove_device(const char *backend, DeviceIntPtr dev)
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{
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/* this only gets called for devices that have already been added */
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LogMessage(X_INFO, "config/%s: removing device %s\n", backend, dev->name);
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/* Call PIE here so we don't try to dereference a device that's
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* already been removed. */
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OsBlockSignals();
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ProcessInputEvents();
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DeleteInputDeviceRequest(dev);
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OsReleaseSignals();
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}
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void
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remove_devices(const char *backend, const char *config_info)
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{
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DeviceIntPtr dev, next;
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for (dev = inputInfo.devices; dev; dev = next) {
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next = dev->next;
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if (dev->config_info && strcmp(dev->config_info, config_info) == 0)
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remove_device(backend, dev);
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}
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for (dev = inputInfo.off_devices; dev; dev = next) {
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next = dev->next;
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if (dev->config_info && strcmp(dev->config_info, config_info) == 0)
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remove_device(backend, dev);
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}
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}
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BOOL
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device_is_duplicate(const char *config_info)
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{
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DeviceIntPtr dev;
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for (dev = inputInfo.devices; dev; dev = dev->next) {
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if (dev->config_info && (strcmp(dev->config_info, config_info) == 0))
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return TRUE;
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}
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for (dev = inputInfo.off_devices; dev; dev = dev->next) {
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if (dev->config_info && (strcmp(dev->config_info, config_info) == 0))
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return TRUE;
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}
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return FALSE;
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}
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struct OdevAttributes *
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config_odev_allocate_attribute_list(void)
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{
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struct OdevAttributes *attriblist;
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attriblist = XNFalloc(sizeof(struct OdevAttributes));
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xorg_list_init(&attriblist->list);
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return attriblist;
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}
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void
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config_odev_free_attribute_list(struct OdevAttributes *attribs)
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{
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config_odev_free_attributes(attribs);
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free(attribs);
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}
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static struct OdevAttribute *
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config_odev_find_attribute(struct OdevAttributes *attribs, int attrib_id)
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{
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struct OdevAttribute *oa;
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xorg_list_for_each_entry(oa, &attribs->list, member) {
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if (oa->attrib_id == attrib_id)
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return oa;
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}
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return NULL;
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}
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static struct OdevAttribute *
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config_odev_find_or_add_attribute(struct OdevAttributes *attribs, int attrib)
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{
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struct OdevAttribute *oa;
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oa = config_odev_find_attribute(attribs, attrib);
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if (oa)
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return oa;
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oa = XNFcalloc(sizeof(struct OdevAttribute));
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oa->attrib_id = attrib;
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xorg_list_append(&oa->member, &attribs->list);
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return oa;
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}
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Bool
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config_odev_add_attribute(struct OdevAttributes *attribs, int attrib,
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const char *attrib_name)
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{
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struct OdevAttribute *oa;
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oa = config_odev_find_or_add_attribute(attribs, attrib);
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free(oa->attrib_name);
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oa->attrib_name = XNFstrdup(attrib_name);
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oa->attrib_type = ODEV_ATTRIB_STRING;
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return TRUE;
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}
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Bool
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config_odev_add_int_attribute(struct OdevAttributes *attribs, int attrib,
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int attrib_value)
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{
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struct OdevAttribute *oa;
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oa = config_odev_find_or_add_attribute(attribs, attrib);
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oa->attrib_value = attrib_value;
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oa->attrib_type = ODEV_ATTRIB_INT;
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return TRUE;
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}
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char *
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config_odev_get_attribute(struct OdevAttributes *attribs, int attrib_id)
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{
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struct OdevAttribute *oa;
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oa = config_odev_find_attribute(attribs, attrib_id);
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if (!oa)
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return NULL;
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if (oa->attrib_type != ODEV_ATTRIB_STRING) {
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LogMessage(X_ERROR, "Error %s called for non string attrib %d\n",
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__func__, attrib_id);
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return NULL;
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}
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return oa->attrib_name;
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}
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int
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config_odev_get_int_attribute(struct OdevAttributes *attribs, int attrib_id, int def)
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{
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struct OdevAttribute *oa;
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oa = config_odev_find_attribute(attribs, attrib_id);
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if (!oa)
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return def;
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if (oa->attrib_type != ODEV_ATTRIB_INT) {
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LogMessage(X_ERROR, "Error %s called for non integer attrib %d\n",
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__func__, attrib_id);
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return def;
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}
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return oa->attrib_value;
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}
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void
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config_odev_free_attributes(struct OdevAttributes *attribs)
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{
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struct OdevAttribute *iter, *safe;
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int major = 0, minor = 0, fd = -1;
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xorg_list_for_each_entry_safe(iter, safe, &attribs->list, member) {
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switch (iter->attrib_id) {
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case ODEV_ATTRIB_MAJOR: major = iter->attrib_value; break;
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case ODEV_ATTRIB_MINOR: minor = iter->attrib_value; break;
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case ODEV_ATTRIB_FD: fd = iter->attrib_value; break;
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}
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xorg_list_del(&iter->member);
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if (iter->attrib_type == ODEV_ATTRIB_STRING)
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free(iter->attrib_name);
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free(iter);
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}
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if (fd != -1) {
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systemd_logind_release_fd(major, minor);
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close(fd);
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}
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}
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