Mercurial > dropbear
annotate circbuffer.h @ 1612:470aa609c7e4
avoid extended regex features to avoid caring about sed -r vs -E
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 24 Jul 2018 20:19:05 +0800 |
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1 /* |
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2 * Dropbear SSH |
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3 * |
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4 * Copyright (c) 2002-2004 Matt Johnston |
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5 * All rights reserved. |
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6 * |
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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8 * of this software and associated documentation files (the "Software"), to deal |
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9 * in the Software without restriction, including without limitation the rights |
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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11 * copies of the Software, and to permit persons to whom the Software is |
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12 * furnished to do so, subject to the following conditions: |
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13 * |
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14 * The above copyright notice and this permission notice shall be included in |
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15 * all copies or substantial portions of the Software. |
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16 * |
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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23 * SOFTWARE. */ |
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24 |
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25 #ifndef DROPBEAR_CIRCBUFFER_H_ |
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26 #define DROPBEAR_CIRCBUFFER_H_ |
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27 struct circbuf { |
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28 |
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29 unsigned int size; |
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30 unsigned int readpos; |
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31 unsigned int writepos; |
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32 unsigned int used; |
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33 unsigned char* data; |
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34 }; |
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35 |
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36 typedef struct circbuf circbuffer; |
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37 |
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38 circbuffer * cbuf_new(unsigned int size); |
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39 void cbuf_free(circbuffer * cbuf); |
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40 |
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41 unsigned int cbuf_getused(const circbuffer * cbuf); /* how much data stored */ |
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42 unsigned int cbuf_getavail(const circbuffer * cbuf); /* how much we can write */ |
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43 unsigned int cbuf_writelen(const circbuffer *cbuf); /* max linear write len */ |
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44 |
1079 | 45 /* returns pointers to the two portions of the circular buffer that can be read */ |
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46 void cbuf_readptrs(const circbuffer *cbuf, |
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47 unsigned char **p1, unsigned int *len1, |
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48 unsigned char **p2, unsigned int *len2); |
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49 unsigned char* cbuf_writeptr(circbuffer *cbuf, unsigned int len); |
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50 void cbuf_incrwrite(circbuffer *cbuf, unsigned int len); |
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51 void cbuf_incrread(circbuffer *cbuf, unsigned int len); |
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52 #endif |