[Global]: loading init

deps/curl/docs/libcurl/opts/CURLOPT_SEEKDATA.md

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+---
+c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_SEEKDATA
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_DEBUGFUNCTION (3)
+  - CURLOPT_IOCTLFUNCTION (3)
+  - CURLOPT_SEEKFUNCTION (3)
+  - CURLOPT_STDERR (3)
+---
+
+# NAME
+
+CURLOPT_SEEKDATA - pointer passed to the seek callback
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SEEKDATA, void *pointer);
+~~~
+
+# DESCRIPTION
+
+Data *pointer* to pass to the seek callback function. If you use the
+CURLOPT_SEEKFUNCTION(3) option, this is the pointer you get as input.
+
+# DEFAULT
+
+If you do not set this, NULL is passed to the callback.
+
+# PROTOCOLS
+
+HTTP, FTP, SFTP
+
+# EXAMPLE
+
+~~~c
+#include <unistd.h> /* for lseek() */
+
+struct data {
+  int our_fd;
+};
+
+static int seek_cb(void *clientp, curl_off_t offset, int origin)
+{
+  struct data *d = (struct data *)clientp;
+  lseek(d->our_fd, offset, origin);
+  return CURL_SEEKFUNC_OK;
+}
+
+int main(void)
+{
+  struct data seek_data;
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    curl_easy_setopt(curl, CURLOPT_SEEKFUNCTION, seek_cb);
+    curl_easy_setopt(curl, CURLOPT_SEEKDATA, &seek_data);
+  }
+}
+~~~
+
+# AVAILABILITY
+
+Added in 7.18.0
+
+# RETURN VALUE
+