diff options
Diffstat (limited to 'gdb/ser-uds.c')
-rw-r--r-- | gdb/ser-uds.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/gdb/ser-uds.c b/gdb/ser-uds.c new file mode 100644 index 0000000..a98469f --- /dev/null +++ b/gdb/ser-uds.c @@ -0,0 +1,118 @@ +/* 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> + +#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 sockaddr_un addr; + + if (strlen (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, 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); +} |