e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
69 lines
1.2 KiB
Markdown
69 lines
1.2 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_SEEKDATA
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_DEBUGFUNCTION (3)
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- CURLOPT_IOCTLFUNCTION (3)
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- CURLOPT_SEEKFUNCTION (3)
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- CURLOPT_STDERR (3)
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Protocol:
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- All
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---
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# NAME
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CURLOPT_SEEKDATA - pointer passed to the seek callback
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SEEKDATA, void *pointer);
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~~~
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# DESCRIPTION
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Data *pointer* to pass to the seek callback function. If you use the
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CURLOPT_SEEKFUNCTION(3) option, this is the pointer you get as input.
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# DEFAULT
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If you do not set this, NULL is passed to the callback.
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# EXAMPLE
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~~~c
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#include <unistd.h> /* for lseek() */
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struct data {
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int our_fd;
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};
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static int seek_cb(void *clientp, curl_off_t offset, int origin)
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{
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struct data *d = (struct data *)clientp;
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lseek(d->our_fd, offset, origin);
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return CURL_SEEKFUNC_OK;
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}
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int main(void)
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{
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struct data seek_data;
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_SEEKFUNCTION, seek_cb);
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curl_easy_setopt(curl, CURLOPT_SEEKDATA, &seek_data);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.18.0
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# RETURN VALUE
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