1 /* Serial interface for raw TCP connections on Un*x like systems
2 Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2001
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
26 #include <sys/types.h>
28 #ifdef HAVE_SYS_FILIO_H
29 #include <sys/filio.h> /* For FIONBIO. */
31 #ifdef HAVE_SYS_IOCTL_H
32 #include <sys/ioctl.h> /* For FIONBIO. */
36 #include <netinet/in.h>
37 #include <arpa/inet.h>
39 #include <sys/socket.h>
40 #include <netinet/tcp.h>
43 #include "gdb_string.h"
45 static int tcp_open (struct serial
*scb
, const char *name
);
46 static void tcp_close (struct serial
*scb
);
47 extern int (*ui_loop_hook
) (int);
48 void _initialize_ser_tcp (void);
50 /* seconds to wait for connect */
52 /* how many times per second to poll ui_loop_hook */
53 #define POLL_INTERVAL 2
55 /* Open a tcp socket */
58 tcp_open (struct serial
*scb
, const char *name
)
60 char *port_str
, hostname
[100];
62 struct hostent
*hostent
;
63 struct sockaddr_in sockaddr
;
65 port_str
= strchr (name
, ':');
68 error ("tcp_open: No colon in host name!"); /* Shouldn't ever happen */
70 tmp
= min (port_str
- name
, (int) sizeof hostname
- 1);
71 strncpy (hostname
, name
, tmp
); /* Don't want colon */
72 hostname
[tmp
] = '\000'; /* Tie off host name */
73 port
= atoi (port_str
+ 1);
75 /* default hostname is localhost */
77 strcpy (hostname
, "localhost");
79 hostent
= gethostbyname (hostname
);
82 fprintf_unfiltered (gdb_stderr
, "%s: unknown host\n", hostname
);
87 scb
->fd
= socket (PF_INET
, SOCK_STREAM
, 0);
91 sockaddr
.sin_family
= PF_INET
;
92 sockaddr
.sin_port
= htons (port
);
93 memcpy (&sockaddr
.sin_addr
.s_addr
, hostent
->h_addr
,
94 sizeof (struct in_addr
));
96 /* set socket nonblocking */
98 ioctl (scb
->fd
, FIONBIO
, &tmp
);
100 /* Use Non-blocking connect. connect() will return 0 if connected already. */
101 n
= connect (scb
->fd
, (struct sockaddr
*) &sockaddr
, sizeof (sockaddr
));
103 if (n
< 0 && errno
!= EINPROGRESS
)
111 /* looks like we need to wait for the connect */
119 /* While we wait for the connect to complete
120 poll the UI so it can update or the user can
124 if (ui_loop_hook (0))
132 FD_SET (scb
->fd
, &rset
);
135 t
.tv_usec
= 1000000 / POLL_INTERVAL
;
137 n
= select (scb
->fd
+ 1, &rset
, &wset
, NULL
, &t
);
140 while (n
== 0 && polls
<= TIMEOUT
* POLL_INTERVAL
);
141 if (n
< 0 || polls
> TIMEOUT
* POLL_INTERVAL
)
143 if (polls
> TIMEOUT
* POLL_INTERVAL
)
150 /* Got something. Is it an error? */
154 res
= getsockopt (scb
->fd
, SOL_SOCKET
, SO_ERROR
, &err
, &len
);
164 /* turn off nonblocking */
166 ioctl (scb
->fd
, FIONBIO
, &tmp
);
168 /* If we don't do this, then GDB simply exits
169 when the remote side dies. */
170 signal (SIGPIPE
, SIG_IGN
);
176 tcp_close (struct serial
*scb
)
186 _initialize_ser_tcp (void)
188 struct serial_ops
*ops
= XMALLOC (struct serial_ops
);
189 memset (ops
, sizeof (struct serial_ops
), 0);
192 ops
->open
= tcp_open
;
193 ops
->close
= tcp_close
;
194 ops
->readchar
= ser_unix_readchar
;
195 ops
->write
= ser_unix_write
;
196 ops
->flush_output
= ser_unix_nop_flush_output
;
197 ops
->flush_input
= ser_unix_flush_input
;
198 ops
->send_break
= ser_unix_nop_send_break
;
199 ops
->go_raw
= ser_unix_nop_raw
;
200 ops
->get_tty_state
= ser_unix_nop_get_tty_state
;
201 ops
->set_tty_state
= ser_unix_nop_set_tty_state
;
202 ops
->print_tty_state
= ser_unix_nop_print_tty_state
;
203 ops
->noflush_set_tty_state
= ser_unix_nop_noflush_set_tty_state
;
204 ops
->setbaudrate
= ser_unix_nop_setbaudrate
;
205 ops
->setstopbits
= ser_unix_nop_setstopbits
;
206 ops
->drain_output
= ser_unix_nop_drain_output
;
207 ops
->async
= ser_unix_async
;
208 serial_add_interface (ops
);