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789d64e19a
Casting return to (void) was used to tell lint that you intended to ignore the return value, so it didn't warn you about it. Casting the third argument to (char *) was used as the most generic pointer type in the days before compilers supported C89 (void *) (except for a couple places it's used for byte-sized pointer math). Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Keith Packard <keithp@keithp.com> Tested-by: Daniel Stone <daniel@fooishbar.org>
160 lines
4.4 KiB
C
160 lines
4.4 KiB
C
/*
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* Copyright © 2009 Red Hat, Inc.
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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: Peter Hutterer
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*/
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/***********************************************************************
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*
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* Request to grab or ungrab input device.
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*
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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 "inputstr.h" /* DeviceIntPtr */
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#include "windowstr.h" /* window structure */
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#include <X11/extensions/XI2.h>
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#include <X11/extensions/XI2proto.h>
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#include "exglobals.h" /* BadDevice */
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#include "exevents.h"
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#include "xigrabdev.h"
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#include "inpututils.h"
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int
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SProcXIGrabDevice(ClientPtr client)
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{
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REQUEST(xXIGrabDeviceReq);
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swaps(&stuff->length);
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swaps(&stuff->deviceid);
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swapl(&stuff->grab_window);
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swapl(&stuff->cursor);
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swapl(&stuff->time);
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swaps(&stuff->mask_len);
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return ProcXIGrabDevice(client);
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}
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int
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ProcXIGrabDevice(ClientPtr client)
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{
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DeviceIntPtr dev;
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xXIGrabDeviceReply rep;
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int ret = Success;
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uint8_t status;
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GrabMask mask = { 0 };
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int mask_len;
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REQUEST(xXIGrabDeviceReq);
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REQUEST_AT_LEAST_SIZE(xXIGrabDeviceReq);
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ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess);
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if (ret != Success)
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return ret;
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if (!IsMaster(dev))
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stuff->paired_device_mode = GrabModeAsync;
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if (XICheckInvalidMaskBits(client, (unsigned char *) &stuff[1],
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stuff->mask_len * 4) != Success)
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return BadValue;
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mask.xi2mask = xi2mask_new();
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if (!mask.xi2mask)
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return BadAlloc;
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mask_len = min(xi2mask_mask_size(mask.xi2mask), stuff->mask_len * 4);
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/* FIXME: I think the old code was broken here */
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xi2mask_set_one_mask(mask.xi2mask, dev->id, (unsigned char *) &stuff[1],
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mask_len);
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ret = GrabDevice(client, dev, stuff->grab_mode,
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stuff->paired_device_mode,
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stuff->grab_window,
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stuff->owner_events,
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stuff->time,
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&mask, XI2, stuff->cursor, None /* confineTo */ ,
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&status);
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xi2mask_free(&mask.xi2mask);
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if (ret != Success)
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return ret;
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rep.repType = X_Reply;
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rep.RepType = X_XIGrabDevice;
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rep.length = 0;
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rep.sequenceNumber = client->sequence;
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rep.status = status;
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WriteReplyToClient(client, sizeof(rep), &rep);
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return ret;
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}
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int
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SProcXIUngrabDevice(ClientPtr client)
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{
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REQUEST(xXIUngrabDeviceReq);
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swaps(&stuff->length);
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swaps(&stuff->deviceid);
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swapl(&stuff->time);
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return ProcXIUngrabDevice(client);
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}
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int
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ProcXIUngrabDevice(ClientPtr client)
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{
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DeviceIntPtr dev;
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GrabPtr grab;
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int ret = Success;
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TimeStamp time;
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REQUEST(xXIUngrabDeviceReq);
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ret = dixLookupDevice(&dev, stuff->deviceid, client, DixGetAttrAccess);
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if (ret != Success)
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return ret;
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grab = dev->deviceGrab.grab;
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time = ClientTimeToServerTime(stuff->time);
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if ((CompareTimeStamps(time, currentTime) != LATER) &&
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(CompareTimeStamps(time, dev->deviceGrab.grabTime) != EARLIER) &&
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(grab) && SameClient(grab, client) && grab->grabtype == XI2)
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(*dev->deviceGrab.DeactivateGrab) (dev);
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return Success;
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}
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void
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SRepXIGrabDevice(ClientPtr client, int size, xXIGrabDeviceReply * rep)
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{
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swaps(&rep->sequenceNumber);
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swapl(&rep->length);
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WriteToClient(client, size, rep);
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}
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