/* Serial interface for raw TCP connections on Un*x like systems.
- Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2001, 2005, 2006,
- 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 1992-2014 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbcmd.h"
#include "cli/cli-decode.h"
#include "cli/cli-setshow.h"
+#include "filestuff.h"
#include <sys/types.h>
#ifdef HAVE_SYS_FILIO_H
-#include <sys/filio.h> /* For FIONBIO. */
+#include <sys/filio.h> /* For FIONBIO. */
#endif
#ifdef HAVE_SYS_IOCTL_H
-#include <sys/ioctl.h> /* For FIONBIO. */
+#include <sys/ioctl.h> /* For FIONBIO. */
#endif
#include <sys/time.h>
#ifdef USE_WIN32API
#include <winsock2.h>
+#ifndef ETIMEDOUT
#define ETIMEDOUT WSAETIMEDOUT
+#endif
#define close(fd) closesocket (fd)
#define ioctl ioctlsocket
#else
#endif
#include <signal.h>
-#include "gdb_string.h"
#include "gdb_select.h"
#ifndef HAVE_SOCKLEN_T
/* Timeout period for connections, in seconds. */
-static int tcp_retry_limit = 15;
+static unsigned int tcp_retry_limit = 15;
-/* how many times per second to poll deprecated_ui_loop_hook */
+/* How many times per second to poll deprecated_ui_loop_hook. */
#define POLL_INTERVAL 5
Returns -1 on timeout or interrupt, otherwise the value of select. */
static int
-wait_for_connect (struct serial *scb, int *polls)
+wait_for_connect (struct serial *scb, unsigned int *polls)
{
struct timeval t;
int n;
if (scb)
{
fd_set rset, wset, eset;
+
FD_ZERO (&rset);
FD_SET (scb->fd, &rset);
wset = rset;
return n;
}
-/* Open a tcp socket */
+/* Open a tcp socket. */
int
net_open (struct serial *scb, const char *name)
#else
int ioarg;
#endif
- int polls = 0;
+ unsigned int polls = 0;
use_udp = 0;
if (strncmp (name, "udp:", 4) == 0)
port_str = strchr (name, ':');
if (!port_str)
- error (_("net_open: No colon in host name!")); /* Shouldn't ever happen */
+ error (_("net_open: No colon in host name!")); /* Shouldn't ever
+ happen. */
tmp = min (port_str - name, (int) sizeof hostname - 1);
- strncpy (hostname, name, tmp); /* Don't want colon */
- hostname[tmp] = '\000'; /* Tie off host name */
+ strncpy (hostname, name, tmp); /* Don't want colon. */
+ hostname[tmp] = '\000'; /* Tie off host name. */
port = atoi (port_str + 1);
- /* default hostname is localhost */
+ /* Default hostname is localhost. */
if (!hostname[0])
strcpy (hostname, "localhost");
retry:
if (use_udp)
- scb->fd = socket (PF_INET, SOCK_DGRAM, 0);
+ scb->fd = gdb_socket_cloexec (PF_INET, SOCK_DGRAM, 0);
else
- scb->fd = socket (PF_INET, SOCK_STREAM, 0);
+ scb->fd = gdb_socket_cloexec (PF_INET, SOCK_STREAM, 0);
- if (scb->fd < 0)
+ if (scb->fd == -1)
return -1;
- /* set socket nonblocking */
+ /* Set socket nonblocking. */
ioarg = 1;
ioctl (scb->fd, FIONBIO, &ioarg);
- /* Use Non-blocking connect. connect() will return 0 if connected already. */
+ /* Use Non-blocking connect. connect() will return 0 if connected
+ already. */
n = connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof (sockaddr));
if (n < 0)
return -1;
}
- /* looks like we need to wait for the connect */
+ /* Looks like we need to wait for the connect. */
do
{
n = wait_for_connect (scb, &polls);
}
}
- /* Got something. Is it an error? */
+ /* Got something. Is it an error? */
{
int res, err;
socklen_t len;
+
len = sizeof (err);
/* On Windows, the fourth parameter to getsockopt is a "char *";
on UNIX systems it is generally "void *". The cast to "void *"
}
}
- /* turn off nonblocking */
+ /* Turn off nonblocking. */
ioarg = 0;
ioctl (scb->fd, FIONBIO, &ioarg);
if (use_udp == 0)
{
- /* Disable Nagle algorithm. Needed in some cases. */
+ /* Disable Nagle algorithm. Needed in some cases. */
tmp = 1;
setsockopt (scb->fd, IPPROTO_TCP, TCP_NODELAY,
(char *)&tmp, sizeof (tmp));
void
net_close (struct serial *scb)
{
- if (scb->fd < 0)
+ if (scb->fd == -1)
return;
close (scb->fd);
int
net_read_prim (struct serial *scb, size_t count)
{
- return recv (scb->fd, scb->buf, count, 0);
+ /* Need to cast to silence -Wpointer-sign on MinGW, as Winsock's
+ 'recv' takes 'char *' as second argument, while 'scb->buf' is
+ 'unsigned char *'. */
+ return recv (scb->fd, (void *) scb->buf, count, 0);
}
int
int
ser_tcp_send_break (struct serial *scb)
{
- /* Send telnet IAC and BREAK characters. */
+ /* Send telnet IAC and BREAK characters. */
return (serial_write (scb, "\377\363", 2));
}
static void
set_tcp_cmd (char *args, int from_tty)
{
- help_list (tcp_set_cmdlist, "set tcp ", -1, gdb_stdout);
+ help_list (tcp_set_cmdlist, "set tcp ", all_commands, gdb_stdout);
}
static void
show_tcp_cmd (char *args, int from_tty)
{
- help_list (tcp_show_cmdlist, "show tcp ", -1, gdb_stdout);
+ help_list (tcp_show_cmdlist, "show tcp ", all_commands, gdb_stdout);
}
+#ifndef USE_WIN32API
+
+/* The TCP ops. */
+
+static const struct serial_ops tcp_ops =
+{
+ "tcp",
+ net_open,
+ net_close,
+ NULL,
+ ser_base_readchar,
+ ser_base_write,
+ ser_base_flush_output,
+ ser_base_flush_input,
+ ser_tcp_send_break,
+ ser_base_raw,
+ ser_base_get_tty_state,
+ ser_base_copy_tty_state,
+ ser_base_set_tty_state,
+ ser_base_print_tty_state,
+ ser_base_noflush_set_tty_state,
+ ser_base_setbaudrate,
+ ser_base_setstopbits,
+ ser_base_drain_output,
+ ser_base_async,
+ net_read_prim,
+ net_write_prim
+};
+
+#endif /* USE_WIN32API */
void
_initialize_ser_tcp (void)
/* Do nothing; the TCP serial operations will be initialized in
ser-mingw.c. */
#else
- struct serial_ops *ops;
- ops = XMALLOC (struct serial_ops);
- memset (ops, 0, sizeof (struct serial_ops));
- ops->name = "tcp";
- ops->next = 0;
- ops->open = net_open;
- ops->close = net_close;
- ops->readchar = ser_base_readchar;
- ops->write = ser_base_write;
- ops->flush_output = ser_base_flush_output;
- ops->flush_input = ser_base_flush_input;
- ops->send_break = ser_tcp_send_break;
- ops->go_raw = ser_base_raw;
- ops->get_tty_state = ser_base_get_tty_state;
- ops->set_tty_state = ser_base_set_tty_state;
- ops->print_tty_state = ser_base_print_tty_state;
- ops->noflush_set_tty_state = ser_base_noflush_set_tty_state;
- ops->setbaudrate = ser_base_setbaudrate;
- ops->setstopbits = ser_base_setstopbits;
- ops->drain_output = ser_base_drain_output;
- ops->async = ser_base_async;
- ops->read_prim = net_read_prim;
- ops->write_prim = net_write_prim;
- serial_add_interface (ops);
+ serial_add_interface (&tcp_ops);
#endif /* USE_WIN32API */
add_prefix_cmd ("tcp", class_maintenance, set_tcp_cmd, _("\
add_setshow_uinteger_cmd ("connect-timeout", class_obscure,
&tcp_retry_limit, _("\
-Set timeout limit for socket connection"), _("\
-Show timeout limit for socket connection"),
- NULL, NULL, NULL,
- &tcp_set_cmdlist, &tcp_show_cmdlist);
+Set timeout limit in seconds for socket connection"), _("\
+Show timeout limit in seconds for socket connection"), _("\
+If set to \"unlimited\", GDB will keep attempting to establish a\n\
+connection forever, unless interrupted with Ctrl-c.\n\
+The default is 15 seconds."),
+ NULL, NULL,
+ &tcp_set_cmdlist, &tcp_show_cmdlist);
}
projects / deliverable / binutils-gdb.git / blobdiff