72 lines
1.2 KiB
Markdown
72 lines
1.2 KiB
Markdown
---
|
|
c: Copyright (C) Daniel Stenberg, <daniel@haxx.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
|
|
|