Initial creation of sourceware repository
This commit is contained in:
Stan Shebs
parent
cd946cff9e
commit
c906108c21
2470 changed files with 976797 additions and 0 deletions
358
gdb/ser-tcp.c
Normal file
358
gdb/ser-tcp.c
Normal file
|
|
@ -0,0 +1,358 @@
|
|||
/* Serial interface for raw TCP connections on Un*x like systems
|
||||
Copyright 1992, 1993, 1998 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 <sys/types.h>
|
||||
#include <sys/time.h>
|
||||
#include <netinet/in.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <netdb.h>
|
||||
#include <sys/socket.h>
|
||||
|
||||
#ifndef __CYGWIN32__
|
||||
#include <netinet/tcp.h>
|
||||
#endif
|
||||
|
||||
#include "signals.h"
|
||||
#include "gdb_string.h"
|
||||
|
||||
struct tcp_ttystate
|
||||
{
|
||||
int bogus;
|
||||
};
|
||||
|
||||
static int tcp_open PARAMS ((serial_t scb, const char *name));
|
||||
static void tcp_raw PARAMS ((serial_t scb));
|
||||
static int wait_for PARAMS ((serial_t scb, int timeout));
|
||||
static int tcp_readchar PARAMS ((serial_t scb, int timeout));
|
||||
static int tcp_setbaudrate PARAMS ((serial_t scb, int rate));
|
||||
static int tcp_setstopbits PARAMS ((serial_t scb, int num));
|
||||
static int tcp_write PARAMS ((serial_t scb, const char *str, int len));
|
||||
/* FIXME: static void tcp_restore PARAMS ((serial_t scb)); */
|
||||
static void tcp_close PARAMS ((serial_t scb));
|
||||
static serial_ttystate tcp_get_tty_state PARAMS ((serial_t scb));
|
||||
static int tcp_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
|
||||
static int tcp_return_0 PARAMS ((serial_t));
|
||||
static int tcp_noflush_set_tty_state PARAMS ((serial_t, serial_ttystate,
|
||||
serial_ttystate));
|
||||
static void tcp_print_tty_state PARAMS ((serial_t, serial_ttystate));
|
||||
|
||||
void _initialize_ser_tcp PARAMS ((void));
|
||||
|
||||
/* Open up a raw tcp socket */
|
||||
|
||||
static int
|
||||
tcp_open(scb, name)
|
||||
serial_t scb;
|
||||
const char *name;
|
||||
{
|
||||
char *port_str;
|
||||
int port;
|
||||
struct hostent *hostent;
|
||||
struct sockaddr_in sockaddr;
|
||||
int tmp;
|
||||
char hostname[100];
|
||||
struct protoent *protoent;
|
||||
int i;
|
||||
|
||||
port_str = strchr (name, ':');
|
||||
|
||||
if (!port_str)
|
||||
error ("tcp_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);
|
||||
|
||||
hostent = gethostbyname (hostname);
|
||||
|
||||
if (!hostent)
|
||||
{
|
||||
fprintf_unfiltered (gdb_stderr, "%s: unknown host\n", hostname);
|
||||
errno = ENOENT;
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (i = 1; i <= 15; i++)
|
||||
{
|
||||
scb->fd = socket (PF_INET, SOCK_STREAM, 0);
|
||||
if (scb->fd < 0)
|
||||
return -1;
|
||||
|
||||
/* Allow rapid reuse of this port. */
|
||||
tmp = 1;
|
||||
setsockopt (scb->fd, SOL_SOCKET, SO_REUSEADDR, (char *)&tmp, sizeof(tmp));
|
||||
|
||||
/* Enable TCP keep alive process. */
|
||||
tmp = 1;
|
||||
setsockopt (scb->fd, SOL_SOCKET, SO_KEEPALIVE, (char *)&tmp, sizeof(tmp));
|
||||
|
||||
sockaddr.sin_family = PF_INET;
|
||||
sockaddr.sin_port = htons(port);
|
||||
memcpy (&sockaddr.sin_addr.s_addr, hostent->h_addr,
|
||||
sizeof (struct in_addr));
|
||||
|
||||
if (!connect (scb->fd, (struct sockaddr *) &sockaddr, sizeof(sockaddr)))
|
||||
break;
|
||||
|
||||
close (scb->fd);
|
||||
scb->fd = -1;
|
||||
|
||||
/* We retry for ECONNREFUSED because that is often a temporary condition, which
|
||||
happens when the server is being restarted. */
|
||||
|
||||
if (errno != ECONNREFUSED)
|
||||
return -1;
|
||||
|
||||
sleep (1);
|
||||
}
|
||||
|
||||
protoent = getprotobyname ("tcp");
|
||||
if (!protoent)
|
||||
return -1;
|
||||
|
||||
tmp = 1;
|
||||
if (setsockopt (scb->fd, protoent->p_proto, TCP_NODELAY,
|
||||
(char *)&tmp, sizeof(tmp)))
|
||||
return -1;
|
||||
|
||||
signal(SIGPIPE, SIG_IGN); /* If we don't do this, then GDB simply exits
|
||||
when the remote side dies. */
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static serial_ttystate
|
||||
tcp_get_tty_state(scb)
|
||||
serial_t scb;
|
||||
{
|
||||
struct tcp_ttystate *state;
|
||||
|
||||
state = (struct tcp_ttystate *)xmalloc(sizeof *state);
|
||||
|
||||
return (serial_ttystate)state;
|
||||
}
|
||||
|
||||
static int
|
||||
tcp_set_tty_state(scb, ttystate)
|
||||
serial_t scb;
|
||||
serial_ttystate ttystate;
|
||||
{
|
||||
struct tcp_ttystate *state;
|
||||
|
||||
state = (struct tcp_ttystate *)ttystate;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
tcp_return_0 (scb)
|
||||
serial_t scb;
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
tcp_raw(scb)
|
||||
serial_t scb;
|
||||
{
|
||||
return; /* Always in raw mode */
|
||||
}
|
||||
|
||||
/* Wait for input on scb, with timeout seconds. Returns 0 on success,
|
||||
otherwise SERIAL_TIMEOUT or SERIAL_ERROR.
|
||||
|
||||
For termio{s}, we actually just setup VTIME if necessary, and let the
|
||||
timeout occur in the read() in tcp_read().
|
||||
*/
|
||||
|
||||
static int
|
||||
wait_for (scb, timeout)
|
||||
serial_t scb;
|
||||
int timeout;
|
||||
{
|
||||
int numfds;
|
||||
struct timeval tv;
|
||||
fd_set readfds, exceptfds;
|
||||
|
||||
FD_ZERO (&readfds);
|
||||
FD_ZERO (&exceptfds);
|
||||
|
||||
tv.tv_sec = timeout;
|
||||
tv.tv_usec = 0;
|
||||
|
||||
FD_SET(scb->fd, &readfds);
|
||||
FD_SET(scb->fd, &exceptfds);
|
||||
|
||||
while (1)
|
||||
{
|
||||
if (timeout >= 0)
|
||||
numfds = select(scb->fd+1, &readfds, 0, &exceptfds, &tv);
|
||||
else
|
||||
numfds = select(scb->fd+1, &readfds, 0, &exceptfds, 0);
|
||||
|
||||
if (numfds <= 0)
|
||||
{
|
||||
if (numfds == 0)
|
||||
return SERIAL_TIMEOUT;
|
||||
else if (errno == EINTR)
|
||||
continue;
|
||||
else
|
||||
return SERIAL_ERROR; /* Got an error from select or poll */
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* Read a character with user-specified timeout. TIMEOUT is number of seconds
|
||||
to wait, or -1 to wait forever. Use timeout of 0 to effect a poll. Returns
|
||||
char if successful. Returns -2 if timeout expired, EOF if line dropped
|
||||
dead, or -3 for any other error (see errno in that case). */
|
||||
|
||||
static int
|
||||
tcp_readchar (scb, timeout)
|
||||
serial_t scb;
|
||||
int timeout;
|
||||
{
|
||||
int status;
|
||||
|
||||
if (scb->bufcnt-- > 0)
|
||||
return *scb->bufp++;
|
||||
|
||||
status = wait_for(scb, timeout);
|
||||
|
||||
if (status < 0)
|
||||
return status;
|
||||
|
||||
while (1)
|
||||
{
|
||||
scb->bufcnt = read(scb->fd, scb->buf, BUFSIZ);
|
||||
if (scb->bufcnt != -1 || errno != EINTR)
|
||||
break;
|
||||
}
|
||||
|
||||
if (scb->bufcnt <= 0)
|
||||
{
|
||||
if (scb->bufcnt == 0)
|
||||
return SERIAL_TIMEOUT; /* 0 chars means timeout [may need to
|
||||
distinguish between EOF & timeouts
|
||||
someday] */
|
||||
else
|
||||
return SERIAL_ERROR; /* Got an error from read */
|
||||
}
|
||||
|
||||
scb->bufcnt--;
|
||||
scb->bufp = scb->buf;
|
||||
return *scb->bufp++;
|
||||
}
|
||||
|
||||
static int
|
||||
tcp_noflush_set_tty_state (scb, new_ttystate, old_ttystate)
|
||||
serial_t scb;
|
||||
serial_ttystate new_ttystate;
|
||||
serial_ttystate old_ttystate;
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
tcp_print_tty_state (scb, ttystate)
|
||||
serial_t scb;
|
||||
serial_ttystate ttystate;
|
||||
{
|
||||
/* Nothing to print. */
|
||||
return;
|
||||
}
|
||||
|
||||
static int
|
||||
tcp_setbaudrate(scb, rate)
|
||||
serial_t scb;
|
||||
int rate;
|
||||
{
|
||||
return 0; /* Never fails! */
|
||||
}
|
||||
|
||||
static int
|
||||
tcp_setstopbits(scb, num)
|
||||
serial_t scb;
|
||||
int num;
|
||||
{
|
||||
return 0; /* Never fails! */
|
||||
}
|
||||
|
||||
static int
|
||||
tcp_write(scb, str, len)
|
||||
serial_t scb;
|
||||
const char *str;
|
||||
int len;
|
||||
{
|
||||
int cc;
|
||||
|
||||
while (len > 0)
|
||||
{
|
||||
cc = write(scb->fd, str, len);
|
||||
|
||||
if (cc < 0)
|
||||
return 1;
|
||||
len -= cc;
|
||||
str += cc;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
tcp_close(scb)
|
||||
serial_t scb;
|
||||
{
|
||||
if (scb->fd < 0)
|
||||
return;
|
||||
|
||||
close(scb->fd);
|
||||
scb->fd = -1;
|
||||
}
|
||||
|
||||
static struct serial_ops tcp_ops =
|
||||
{
|
||||
"tcp",
|
||||
0,
|
||||
tcp_open,
|
||||
tcp_close,
|
||||
tcp_readchar,
|
||||
tcp_write,
|
||||
tcp_return_0, /* flush output */
|
||||
tcp_return_0, /* flush input */
|
||||
tcp_return_0, /* send break */
|
||||
tcp_raw,
|
||||
tcp_get_tty_state,
|
||||
tcp_set_tty_state,
|
||||
tcp_print_tty_state,
|
||||
tcp_noflush_set_tty_state,
|
||||
tcp_setbaudrate,
|
||||
tcp_setstopbits,
|
||||
tcp_return_0, /* wait for output to drain */
|
||||
};
|
||||
|
||||
void
|
||||
_initialize_ser_tcp ()
|
||||
{
|
||||
serial_add_interface (&tcp_ops);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue