Mercurial > sdl-ios-xcode
annotate src/audio/nto/SDL_nto_audio.h @ 4355:9b464226e541 SDL-1.2
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> |
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date | Sun, 18 Oct 2009 17:31:37 +0000 |
parents | a1b03ba2fcd0 |
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rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
0 | 4 |
5 This library is free software; you can redistribute it and/or | |
6 modify it under the terms of the GNU Library General Public | |
7 License as published by the Free Software Foundation; either | |
8 version 2 of the License, or (at your option) any later version. | |
9 | |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 Library General Public License for more details. | |
14 | |
15 You should have received a copy of the GNU Library General Public | |
16 License along with this library; if not, write to the Free | |
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
18 | |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
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24 #ifndef __SDL_NTO_AUDIO_H__ |
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25 #define __SDL_NTO_AUDIO_H__ |
0 | 26 |
27 #include <sys/asoundlib.h> | |
28 | |
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29 #include "../SDL_sysaudio.h" |
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30 |
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31 /* Hidden "this" pointer for the audio functions */ |
0 | 32 #define _THIS SDL_AudioDevice *this |
33 | |
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34 struct SDL_PrivateAudioData |
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35 { |
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36 /* The audio device handle */ |
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37 int cardno; |
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38 int deviceno; |
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39 snd_pcm_t* audio_handle; |
0 | 40 |
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41 /* The audio file descriptor */ |
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42 int audio_fd; |
0 | 43 |
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44 /* The parent process id, to detect when application quits */ |
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45 pid_t parent; |
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46 |
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47 /* Raw mixing buffer */ |
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48 Uint8* pcm_buf; |
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49 Uint32 pcm_len; |
0 | 50 |
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51 /* QSA parameters */ |
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52 snd_pcm_channel_status_t cstatus; |
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53 snd_pcm_channel_params_t cparams; |
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54 snd_pcm_channel_setup_t csetup; |
0 | 55 }; |
56 | |
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57 #define cardno (this->hidden->cardno) |
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58 #define deviceno (this->hidden->deviceno) |
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59 #define audio_handle (this->hidden->audio_handle) |
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60 #define audio_fd (this->hidden->audio_fd) |
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61 #define parent (this->hidden->parent) |
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62 #define pcm_buf (this->hidden->pcm_buf) |
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63 #define pcm_len (this->hidden->pcm_len) |
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64 #define cstatus (this->hidden->cstatus) |
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65 #define cparams (this->hidden->cparams) |
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66 #define csetup (this->hidden->csetup) |
0 | 67 |
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68 #endif /* __SDL_NTO_AUDIO_H__ */ |