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119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
/* Serial interface for local domain connections on Un*x like systems.
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Copyright (C) 1992-2018 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "serial.h"
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#include "ser-base.h"
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#include <sys/socket.h>
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#include <sys/un.h>
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#ifndef UNIX_PATH_MAX
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#define UNIX_PATH_MAX sizeof(((struct sockaddr_un *) NULL)->sun_path)
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#endif
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/* Open an AF_UNIX socket. */
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static int
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uds_open (struct serial *scb, const char *name)
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{
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struct sockaddr_un addr;
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if (strlen (name) > UNIX_PATH_MAX - 1)
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{
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warning
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(_("The socket name is too long. It may be no longer than %s bytes."),
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pulongest (UNIX_PATH_MAX - 1L));
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return -1;
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}
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memset (&addr, 0, sizeof addr);
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addr.sun_family = AF_UNIX;
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strncpy (addr.sun_path, name, UNIX_PATH_MAX - 1);
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int sock = socket (AF_UNIX, SOCK_STREAM, 0);
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if (connect (sock, (struct sockaddr *) &addr,
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sizeof (struct sockaddr_un)) < 0)
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{
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close (sock);
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scb->fd = -1;
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return -1;
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}
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scb->fd = sock;
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return 0;
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}
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static void
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uds_close (struct serial *scb)
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{
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if (scb->fd == -1)
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return;
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close (scb->fd);
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scb->fd = -1;
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}
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static int
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uds_read_prim (struct serial *scb, size_t count)
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{
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return recv (scb->fd, scb->buf, count, 0);
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}
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static int
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uds_write_prim (struct serial *scb, const void *buf, size_t count)
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{
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return send (scb->fd, buf, count, 0);
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}
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/* The local socket ops. */
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static const struct serial_ops uds_ops =
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{
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"local",
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uds_open,
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uds_close,
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NULL,
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ser_base_readchar,
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ser_base_write,
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ser_base_flush_output,
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ser_base_flush_input,
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ser_base_send_break,
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ser_base_raw,
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ser_base_get_tty_state,
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ser_base_copy_tty_state,
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ser_base_set_tty_state,
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ser_base_print_tty_state,
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ser_base_setbaudrate,
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ser_base_setstopbits,
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ser_base_setparity,
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ser_base_drain_output,
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ser_base_async,
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uds_read_prim,
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uds_write_prim
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};
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void
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_initialize_ser_socket (void)
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{
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serial_add_interface (&uds_ops);
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}
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