1CURLOPT_SEEKDATA(3)        curl_easy_setopt options        CURLOPT_SEEKDATA(3)
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NAME

6       CURLOPT_SEEKDATA - custom pointer passed to the seek callback
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SYNOPSIS

9       #include <curl/curl.h>
10
11       CURLcode    curl_easy_setopt(CURL   *handle,   CURLOPT_SEEKDATA,   void
12       *pointer);
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DESCRIPTION

15       Data pointer to pass to the seek callback function. If you use the CUR‐
16       LOPT_SEEKFUNCTION(3) option, this is the pointer you'll get as input.
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DEFAULT

19       If you don't set this, NULL is passed to the callback.
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PROTOCOLS

22       HTTP, FTP, SFTP
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EXAMPLE

25       static int seek_cb(void *userp, curl_off_t offset, int origin)
26       {
27         struct data *d = (struct data *)userp;
28         lseek(our_fd, offset, origin);
29         return CURL_SEEKFUNC_OK;
30       }
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32       {
33         struct data seek_data;
34         curl_easy_setopt(CURL *handle, CURLOPT_SEEKFUNCTION, seek_cb);
35         curl_easy_setopt(CURL *handle, CURLOPT_SEEKDATA, &seek_data);
36       }
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AVAILABILITY

39       Added in 7.18.0
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RETURN VALUE

SEE ALSO
43       CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3),
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47libcurl 7.61.1                  August 12, 2017            CURLOPT_SEEKDATA(3)



        

    


            
        

        

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