[Winpcap-users] pcap_list_datalinks() - how to free

[Gianluca Varenni]

----- Original Message ----- 
From: "Esmond Pitt" <esmond.pitt at bigpond.com>
To: <winpcap-users at winpcap.org>
Sent: Tuesday, May 20, 2008 11:35 PM
Subject: [Winpcap-users] pcap_list_datalinks() - how to free


> The documentation for the pcap_list_datalinks() function says that the 
> user
> is responsible for freeing the array of integers allocated by the 
> function.
>
> As no specific function to do that is provided, presumably we are supposed
> to use free(3). But in a DLL environment this is of course most 
> problematic,
> and indeed causes SEGVs when I do it.
>
> I think you need to add a pcap_free_datalinks() function. Or is there some
> other solution?

No other solution. This function was created within the linux/unix 
environment, where it's safe to call malloc/free from across DLLs/shared 
object boundaries (while it's not under Windows with the MS CRT).

In the next days I will try to commit an implementation of 
pcap_free_datalinks() in the libpcap source tree.

Have a nice day
GV

>
> EJP
>
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