old-cross-binutils/gdb/ser-tcp.c
Andrew Cagney 8a3fe4f86c 2005-02-10 Andrew Cagney <cagney@gnu.org>
Mark up all error and warning messages.
	* ada-lang.c, amd64-tdep.c, arch-utils.c, breakpoint.c: Update.
	* bsd-kvm.c, bsd-uthread.c, coff-solib.h, coffread.c: Update.
	* core-aout.c, core-regset.c, corefile.c, corelow.c: Update.
	* cp-abi.c, cp-support.c, cp-valprint.c, cris-tdep.c: Update.
	* dbxread.c, demangle.c, doublest.c, dsrec.c: Update.
	* dve3900-rom.c, dwarf2expr.c, dwarf2loc.c: Update.
	* dwarf2read.c, dwarfread.c, elfread.c, eval.c: Update.
	* event-top.c, exec.c, expprint.c, f-lang.c: Update.
	* f-typeprint.c, f-valprint.c, fbsd-nat.c, findvar.c: Update.
	* frame.c, frv-linux-tdep.c, gcore.c, gdbtypes.c: Update.
	* gnu-nat.c, gnu-v2-abi.c, gnu-v3-abi.c, go32-nat.c: Update.
	* hpacc-abi.c, hppa-hpux-nat.c, hppa-hpux-tdep.c: Update.
	* hppa-linux-nat.c, hppa-linux-tdep.c, hppa-tdep.c: Update.
	* hpread.c, hpux-thread.c, i386-linux-nat.c: Update.
	* i386-linux-tdep.c, i386-tdep.c, i386bsd-nat.c: Update.
	* i386gnu-nat.c, i387-tdep.c, ia64-linux-nat.c: Update.
	* ia64-tdep.c, inf-child.c, inf-ptrace.c, inf-ttrace.c: Update.
	* infcall.c, infcmd.c, inflow.c, infptrace.c, infrun.c: Update.
	* inftarg.c, interps.c, irix5-nat.c, jv-lang.c: Update.
	* kod-cisco.c, kod.c, language.c, libunwind-frame.c: Update.
	* linespec.c, linux-nat.c, linux-thread-db.c, m2-lang.c: Update.
	* m32r-rom.c, m68hc11-tdep.c, m68k-tdep.c: Update.
	* m68klinux-nat.c, macrocmd.c, macroexp.c, main.c: Update.
	* maint.c, mdebugread.c, mem-break.c, memattr.c: Update.
	* mips-linux-tdep.c, mips-tdep.c, mipsread.c, monitor.c: Update.
	* nlmread.c, nto-procfs.c, objc-lang.c, objfiles.c: Update.
	* observer.c, ocd.c, p-lang.c, p-typeprint.c: Update.
	* p-valprint.c, pa64solib.c, parse.c, ppc-linux-tdep.c: Update.
	* ppcnbsd-tdep.c, printcmd.c, procfs.c, remote-e7000.c: Update.
	* remote-fileio.c, remote-m32r-sdi.c, remote-rdi.c: Update.
	* remote-rdp.c, remote-sim.c, remote-st.c: Update.
	* remote-utils.c, remote-utils.h, remote.c: Update.
	* rom68k-rom.c, rs6000-nat.c, s390-tdep.c, scm-lang.c: Update.
	* ser-e7kpc.c, ser-tcp.c, ser-unix.c, sh-tdep.c: Update.
	* sh3-rom.c, shnbsd-tdep.c, sol-thread.c, solib-aix5.c: Update.
	* solib-frv.c, solib-irix.c, solib-osf.c, solib-pa64.c: Update.
	* solib-som.c, solib-sunos.c, solib-svr4.c, solib.c: Update.
	* somread.c, somsolib.c, source.c, stabsread.c: Update.
	* stack.c, std-regs.c, symfile-mem.c, symfile.c: Update.
	* symmisc.c, symtab.c, target.c, thread.c, top.c: Update.
	* tracepoint.c, trad-frame.c, typeprint.c, utils.c: Update.
	* uw-thread.c, valarith.c, valops.c, valprint.c: Update.
	* value.c, varobj.c, version.in, win32-nat.c, wince.c: Update.
	* xcoffread.c, xcoffsolib.c, cli/cli-cmds.c: Update.
	* cli/cli-decode.c, cli/cli-dump.c, cli/cli-logging.c: Update.
	* cli/cli-script.c, cli/cli-setshow.c, mi/mi-cmd-break.c: Update.
	* mi/mi-cmd-disas.c, mi/mi-cmd-env.c, mi/mi-cmd-file.c: Update.
	* mi/mi-cmd-stack.c, mi/mi-cmd-var.c, mi/mi-getopt.c: Update.
	* mi/mi-symbol-cmds.c, tui/tui-layout.c, tui/tui-stack.c: Update.
	* tui/tui-win.c: Update.
2005-02-11 04:06:14 +00:00

230 lines
5.6 KiB
C

/* Serial interface for raw TCP connections on Un*x like systems
Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2001
Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "serial.h"
#include "ser-unix.h"
#include <sys/types.h>
#ifdef HAVE_SYS_FILIO_H
#include <sys/filio.h> /* For FIONBIO. */
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h> /* For FIONBIO. */
#endif
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
#include <signal.h>
#include "gdb_string.h"
static int net_open (struct serial *scb, const char *name);
static void net_close (struct serial *scb);
void _initialize_ser_tcp (void);
/* seconds to wait for connect */
#define TIMEOUT 15
/* how many times per second to poll deprecated_ui_loop_hook */
#define POLL_INTERVAL 2
/* Open a tcp socket */
static int
net_open (struct serial *scb, const char *name)
{
char *port_str, hostname[100];
int n, port, tmp;
int use_udp;
struct hostent *hostent;
struct sockaddr_in sockaddr;
use_udp = 0;
if (strncmp (name, "udp:", 4) == 0)
{
use_udp = 1;
name = name + 4;
}
else if (strncmp (name, "tcp:", 4) == 0)
name = name + 4;
port_str = strchr (name, ':');
if (!port_str)
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 */
port = atoi (port_str + 1);
/* default hostname is localhost */
if (!hostname[0])
strcpy (hostname, "localhost");
hostent = gethostbyname (hostname);
if (!hostent)
{
fprintf_unfiltered (gdb_stderr, "%s: unknown host\n", hostname);
errno = ENOENT;
return -1;
}
if (use_udp)
scb->fd = socket (PF_INET, SOCK_DGRAM, 0);
else
scb->fd = socket (PF_INET, SOCK_STREAM, 0);
if (scb->fd < 0)
return -1;
sockaddr.sin_family = PF_INET;
sockaddr.sin_port = htons (port);
memcpy (&sockaddr.sin_addr.s_addr, hostent->h_addr,
sizeof (struct in_addr));
/* set socket nonblocking */
tmp = 1;
ioctl (scb->fd, FIONBIO, &tmp);
/* Use Non-blocking connect. connect() will return 0 if connected already. */
n = connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof (sockaddr));
if (n < 0 && errno != EINPROGRESS)
{
net_close (scb);
return -1;
}
if (n)
{
/* looks like we need to wait for the connect */
struct timeval t;
fd_set rset, wset;
int polls = 0;
FD_ZERO (&rset);
do
{
/* While we wait for the connect to complete,
poll the UI so it can update or the user can
interrupt. */
if (deprecated_ui_loop_hook)
{
if (deprecated_ui_loop_hook (0))
{
errno = EINTR;
net_close (scb);
return -1;
}
}
FD_SET (scb->fd, &rset);
wset = rset;
t.tv_sec = 0;
t.tv_usec = 1000000 / POLL_INTERVAL;
n = select (scb->fd + 1, &rset, &wset, NULL, &t);
polls++;
}
while (n == 0 && polls <= TIMEOUT * POLL_INTERVAL);
if (n < 0 || polls > TIMEOUT * POLL_INTERVAL)
{
if (polls > TIMEOUT * POLL_INTERVAL)
errno = ETIMEDOUT;
net_close (scb);
return -1;
}
}
/* Got something. Is it an error? */
{
int res, err, len;
len = sizeof(err);
res = getsockopt (scb->fd, SOL_SOCKET, SO_ERROR, &err, &len);
if (res < 0 || err)
{
if (err)
errno = err;
net_close (scb);
return -1;
}
}
/* turn off nonblocking */
tmp = 0;
ioctl (scb->fd, FIONBIO, &tmp);
if (use_udp == 0)
{
/* Disable Nagle algorithm. Needed in some cases. */
tmp = 1;
setsockopt (scb->fd, IPPROTO_TCP, TCP_NODELAY,
(char *)&tmp, sizeof (tmp));
}
/* If we don't do this, then GDB simply exits
when the remote side dies. */
signal (SIGPIPE, SIG_IGN);
return 0;
}
static void
net_close (struct serial *scb)
{
if (scb->fd < 0)
return;
close (scb->fd);
scb->fd = -1;
}
void
_initialize_ser_tcp (void)
{
struct serial_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_unix_readchar;
ops->write = ser_unix_write;
ops->flush_output = ser_unix_nop_flush_output;
ops->flush_input = ser_unix_flush_input;
ops->send_break = ser_unix_nop_send_break;
ops->go_raw = ser_unix_nop_raw;
ops->get_tty_state = ser_unix_nop_get_tty_state;
ops->set_tty_state = ser_unix_nop_set_tty_state;
ops->print_tty_state = ser_unix_nop_print_tty_state;
ops->noflush_set_tty_state = ser_unix_nop_noflush_set_tty_state;
ops->setbaudrate = ser_unix_nop_setbaudrate;
ops->setstopbits = ser_unix_nop_setstopbits;
ops->drain_output = ser_unix_nop_drain_output;
ops->async = ser_unix_async;
serial_add_interface (ops);
}