Mercurial > sdl-ios-xcode

annotate src/video/nanox/SDL_nxmouse.c @ 4355:9b464226e541 SDL-1.2

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Fixed bug #855 Ludwig Nussel 2009-10-18 06:31:52 PDT an mprotect call was added to fix bug 528. However that results in a buffer that allows writing and code execution. Ie the no-execute security features of modern operating systems are defeated this way. Two mprotect calls are needed. One to make the buffer executable but not writeable when done and another one to make the buffer writeable again if the content needs to be changed.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Oct 2009 17:31:37 +0000
parents a1b03ba2fcd0
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4 Copyright (C) 2001 Hsieh-Fu Tsai
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5
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6 This library is free software; you can redistribute it and/or
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7 modify it under the terms of the GNU Library General Public
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8 License as published by the Free Software Foundation; either
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9 version 2 of the License, or (at your option) any later version.
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10
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11 This library is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 Library General Public License for more details.
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15
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16 You should have received a copy of the GNU Library General Public
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17 License along with this library; if not, write to the Free
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18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19
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20 Sam Lantinga
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21 slouken@libsdl.org
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22
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23 Hsieh-Fu Tsai
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24 clare@setabox.com
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25 */
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26 #include "SDL_config.h"
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27
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28 #include "../../events/SDL_events_c.h"
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29
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30 #include "SDL_nxmouse_c.h"
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31
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32 // The implementation dependent data for the window manager cursor
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33 struct WMcursor {
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34 int unused ;
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35 } ;
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36
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37 WMcursor * NX_CreateWMCursor (_THIS,
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38 Uint8 * data, Uint8 * mask, int w, int h, int hot_x, int hot_y)
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39 {
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40 WMcursor * cursor ;
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41
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42 Dprintf ("enter NX_CreateWMCursor\n") ;
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43
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44 cursor = (WMcursor *) SDL_malloc (sizeof (WMcursor)) ;
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45 if (cursor == NULL) {
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46 SDL_OutOfMemory () ;
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47 return NULL ;
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48 }
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49
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50 Dprintf ("leave NX_CreateWMCursor\n") ;
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51 return cursor ;
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52 }
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53
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54 void NX_FreeWMCursor (_THIS, WMcursor * cursor)
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55 {
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56 Dprintf ("NX_FreeWMCursor\n") ;
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57 SDL_free (cursor) ;
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58 return ;
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59 }
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61 void NX_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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62 {
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63 GR_WINDOW_INFO info ;
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64
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65 Dprintf ("enter NX_WarpWMCursor\n") ;
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66 SDL_Lock_EventThread () ;
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67
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68 GrGetWindowInfo (SDL_Window, & info) ;
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69 GrMoveCursor (info.x + x, info.y + y) ;
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70
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71 SDL_Unlock_EventThread () ;
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72 Dprintf ("leave NX_WarpWMCursor\n") ;
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73 }
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74
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75 int NX_ShowWMCursor (_THIS, WMcursor * cursor)
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76 {
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77 Dprintf ("NX_ShowWMCursor\n") ;
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78 return 1 ;
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79 }