1/***************************************************************************
2 *                                  _   _ ____  _
3 *  Project                     ___| | | |  _ \| |
4 *                             / __| | | | |_) | |
5 *                            | (__| |_| |  _ <| |___
6 *                             \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22#include "setup.h"
23
24#include <curl/curl.h>
25
26#ifdef HAVE_UNISTD_H
27#  include <unistd.h>
28#endif
29
30#define ENABLE_CURLX_PRINTF
31/* use our own printf() functions */
32#include "curlx.h"
33
34#include "tool_cfgable.h"
35#include "tool_cb_rea.h"
36
37#include "memdebug.h" /* keep this as LAST include */
38
39/*
40** callback for CURLOPT_READFUNCTION
41*/
42
43size_t tool_read_cb(void *buffer, size_t sz, size_t nmemb, void *userdata)
44{
45  ssize_t rc;
46  struct InStruct *in = userdata;
47
48  rc = read(in->fd, buffer, sz*nmemb);
49  if(rc < 0) {
50    if(errno == EAGAIN) {
51      errno = 0;
52      in->config->readbusy = TRUE;
53      return CURL_READFUNC_PAUSE;
54    }
55    /* since size_t is unsigned we can't return negative values fine */
56    rc = 0;
57  }
58  in->config->readbusy = FALSE;
59  return (size_t)rc;
60}
61
62