CURLOPT_IOCTLDATA - pointer passed to I/O callback
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IOCTLDATA, void *pointer);
CURLOPT_IOCTLDATA(3) curl_easy_setopt options CURLOPT_IOCTLDATA(3)
NAME
CURLOPT_IOCTLDATA - pointer passed to I/O callback
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IOCTLDATA, void *pointer);
DESCRIPTION
Pass the pointer that will be untouched by libcurl and passed as the
3rd argument in the ioctl callback set with CURLOPT_IOCTLFUNCTION(3).
DEFAULT
By default, the value of this parameter is NULL.
PROTOCOLS
Used with HTTP
EXAMPLE
static curlioerr ioctl_callback(CURL *handle, int cmd, void *clientp)
{
struct data *io = (struct data *)clientp;
if(cmd == CURLIOCMD_RESTARTREAD) {
lseek(fd, 0, SEEK_SET);
current_offset = 0;
return CURLIOE_OK;
}
return CURLIOE_UNKNOWNCMD;
}
{
struct data ioctl_data;
curl_easy_setopt(curl, CURLOPT_IOCTLFUNCTION, ioctl_callback);
curl_easy_setopt(curl, CURLOPT_IOCTLDATA, &ioctl_data);
}
AVAILABILITY
Added in 7.12.3
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
if not.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | web/curl |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
CURLOPT_IOCTLFUNCTION(3), CURLOPT_SEEKFUNCTION(3),
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from https://curl.se/down-
load/curl-7.83.1.tar.bz2.
Further information about this software can be found on the open source
community website at http://curl.haxx.se/.
libcurl 7.83.1 November 26, 2021 CURLOPT_IOCTLDATA(3)