About remote target AF_UNIX socket addition ?

[Philippe Waille]

On Fri, Mar 27, 2009 at 02:57:02PM +0000, Pedro Alves wrote:
> >   The target command allows remote stub access through TCP sockets.
> >   Could it be extended to local unix domain (AF_UNIX) sockets as well ?
> > 
> >   gdb> target remote | some_stub_target                  /* existing  */
> >   gdb> target remote tcp:host:ip_port_number             /* existing  */
> >   gdb> target remote unix:local_filesystem_port_name     /* suggested */
> > 
> I'm not objecting, but, my knee jerk reaction would be to implement a
> netcat/socat-like stub that does stdio <-> unix socket forwarding, so
> you'd use:
> 
>  target remote | mypipe_to_socket_gateway

Outside gdb = end user pipe-to-socket-stub : 

a) each gdb user with the same problem will design again a stub
b) multiplex two unidirectionnal streams on a bidirectional socket 
c) carefully manage pipe/socket closing
--> not so simple code (I expect poll/select or multithread)


Inside gdb : 

I expect a small gdb patch (net_open function in ser-tcp.c and command
line option documentation) :

a) detect a new af_unix port name prefix string
b) fill/pass a sockaddr_un (instead of sockaddr_in) parameter to connect 
--> after connect, reuse the existing tcp code 
--> #ifdef "AF_UNIX/AF_LOCAL missing on WINDOWS" 

Best regards
Ph. W.

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