Man pages sections > man3 > CURLOPT_SEEKDATA

CURLOPT_SEEKDATA - custom pointer passed to the seek callback

CURLOPT_SEEKDATA(3) curl_easy_setopt options CURLOPT_SEEKDATA(3)

NAME

CURLOPT_SEEKDATA - custom pointer passed to the seek callback

SYNOPSIS

#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'll get as input.

DEFAULT

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

PROTOCOLS

HTTP, FTP, SFTP

EXAMPLE

static int seek_cb(void *userp, curl_off_t offset, int origin)
{
  struct data *d = (struct data *)userp;
  lseek(our_fd, offset, origin);
  return CURL_SEEKFUNC_OK;
}
{ struct data seek_data; curl_easy_setopt(CURL *handle, CURLOPT_SEEKFUNCTION, seek_cb); curl_easy_setopt(CURL *handle, CURLOPT_SEEKDATA, &seek_data); }

AVAILABILITY

Added in 7.18.0

RETURN VALUE

SEE ALSO

CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3),
August 12, 2017 libcurl 7.55.1