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annotate src/thread/SDL_thread_c.h @ 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
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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
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef _SDL_thread_c_h
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25 #define _SDL_thread_c_h
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26
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27 /* Need the definitions of SYS_ThreadHandle */
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28 #if SDL_THREADS_DISABLED
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29 #include "generic/SDL_systhread_c.h"
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30 #elif SDL_THREAD_BEOS
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31 #include "beos/SDL_systhread_c.h"
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32 #elif SDL_THREAD_DC
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33 #include "dc/SDL_systhread_c.h"
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34 #elif SDL_THREAD_OS2
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35 #include "os2/SDL_systhread_c.h"
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36 #elif SDL_THREAD_PTH
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37 #include "pth/SDL_systhread_c.h"
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38 #elif SDL_THREAD_PTHREAD
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39 #include "pthread/SDL_systhread_c.h"
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40 #elif SDL_THREAD_SPROC
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41 #include "irix/SDL_systhread_c.h"
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42 #elif SDL_THREAD_WIN32
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43 #include "win32/SDL_systhread_c.h"
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44 #elif SDL_THREAD_SYMBIAN
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45 #include "symbian/SDL_systhread_c.h"
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46 #else
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47 #error Need thread implementation for this platform
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48 #include "generic/SDL_systhread_c.h"
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49 #endif
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50 #include "../SDL_error_c.h"
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51
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52 /* This is the system-independent thread info structure */
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53 struct SDL_Thread {
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54 Uint32 threadid;
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55 SYS_ThreadHandle handle;
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56 int status;
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57 SDL_error errbuf;
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58 void *data;
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59 };
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60
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61 /* This is the function called to run a thread */
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62 extern void SDL_RunThread(void *data);
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63
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64 #endif /* _SDL_thread_c_h */