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/* Serial interface for local domain connections on Un*x like systems.
Copyright (C) 1992-2018 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 3 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, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "serial.h"
#include "ser-base.h"
#include <sys/socket.h>
#include <sys/un.h>
#include <netdb.h>
#include "netstuff.h"
#ifndef UNIX_PATH_MAX
#define UNIX_PATH_MAX sizeof(((struct sockaddr_un *) NULL)->sun_path)
#endif
/* Open an AF_UNIX socket. */
static int
uds_open (struct serial *scb, const char *name)
{
struct addrinfo hint;
memset (&hint, 0, sizeof (hint));
/* Assume no prefix will be passed, therefore we should use
AF_UNSPEC. */
hint.ai_family = AF_UNSPEC;
hint.ai_socktype = SOCK_STREAM;
parsed_connection_spec parsed = parse_connection_spec (name, &hint);
const char *socket_name = parsed.port_str.empty() ? name : parsed.port_str.c_str ();
struct sockaddr_un addr;
if (strlen (socket_name) > UNIX_PATH_MAX - 1)
{
warning
(_("The socket name is too long. It may be no longer than %s bytes."),
pulongest (UNIX_PATH_MAX - 1L));
return -1;
}
memset (&addr, 0, sizeof addr);
addr.sun_family = AF_UNIX;
strncpy (addr.sun_path, socket_name, UNIX_PATH_MAX - 1);
int sock = socket (AF_UNIX, SOCK_STREAM, 0);
if (connect (sock, (struct sockaddr *) &addr,
sizeof (struct sockaddr_un)) < 0)
{
close (sock);
scb->fd = -1;
return -1;
}
scb->fd = sock;
return 0;
}
static void
uds_close (struct serial *scb)
{
if (scb->fd == -1)
return;
close (scb->fd);
scb->fd = -1;
}
static int
uds_read_prim (struct serial *scb, size_t count)
{
return recv (scb->fd, scb->buf, count, 0);
}
static int
uds_write_prim (struct serial *scb, const void *buf, size_t count)
{
return send (scb->fd, buf, count, 0);
}
/* The local socket ops. */
static const struct serial_ops uds_ops =
{
"local",
uds_open,
uds_close,
NULL,
ser_base_readchar,
ser_base_write,
ser_base_flush_output,
ser_base_flush_input,
ser_base_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_setbaudrate,
ser_base_setstopbits,
ser_base_setparity,
ser_base_drain_output,
ser_base_async,
uds_read_prim,
uds_write_prim
};
void
_initialize_ser_socket (void)
{
serial_add_interface (&uds_ops);
}
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