1 | /***************************************************************************
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2 | * _ _ ____ _
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3 | * Project ___| | | | _ \| |
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4 | * / __| | | | |_) | |
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5 | * | (__| |_| | _ <| |___
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6 | * \___|\___/|_| \_\_____|
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7 | *
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8 | * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 | *
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10 | * This software is licensed as described in the file COPYING, which
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11 | * you should have received as part of this distribution. The terms
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12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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13 | *
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14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 | * copies of the Software, and permit persons to whom the Software is
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16 | * furnished to do so, under the terms of the COPYING file.
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17 | *
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18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 | * KIND, either express or implied.
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20 | *
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21 | ***************************************************************************/
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22 | #include "tool_setup.h"
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23 |
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24 | #define ENABLE_CURLX_PRINTF
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25 | /* use our own printf() functions */
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26 | #include "curlx.h"
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27 |
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28 | #include "tool_cfgable.h"
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29 | #include "tool_cb_rea.h"
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30 |
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31 | #include "memdebug.h" /* keep this as LAST include */
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32 |
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33 | /*
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34 | ** callback for CURLOPT_READFUNCTION
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35 | */
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36 |
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37 | size_t tool_read_cb(void *buffer, size_t sz, size_t nmemb, void *userdata)
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38 | {
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39 | ssize_t rc;
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40 | struct InStruct *in = userdata;
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41 |
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42 | rc = read(in->fd, buffer, sz*nmemb);
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43 | if(rc < 0) {
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44 | if(errno == EAGAIN) {
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45 | errno = 0;
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46 | in->config->readbusy = TRUE;
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47 | return CURL_READFUNC_PAUSE;
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48 | }
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49 | /* since size_t is unsigned we can't return negative values fine */
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50 | rc = 0;
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51 | }
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52 | in->config->readbusy = FALSE;
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53 | return (size_t)rc;
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54 | }
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55 |
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