1 /* Serial interface for a pipe to a separate program
2 Copyright 1999 Free Software Foundation, Inc.
4 Contributed by Cygnus Solutions.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
27 #include <sys/types.h>
29 #include <sys/socket.h>
36 static int pipe_open (serial_t scb, const char *name);
37 static void pipe_close (serial_t scb);
39 extern void _initialize_ser_pipe (void);
46 /* Open up a raw pipe */
49 pipe_open (serial_t scb, const char *name)
54 struct pipe_state *state;
56 /* Copyright (c) 1988, 1993
57 * The Regents of the University of California. All rights reserved.
59 * This code is derived from software written by Ken Arnold and
60 * published in UNIX Review, Vol. 6, No. 8.
64 if (socketpair (AF_UNIX, SOCK_STREAM, 0, pdes) < 0)
80 /* re-wire pdes[1] to stdin/stdout */
82 if (pdes[1] != STDOUT_FILENO)
84 dup2 (pdes[1], STDOUT_FILENO);
87 dup2 (STDOUT_FILENO, STDIN_FILENO);
89 /* close any stray FD's - FIXME - how? */
90 /* POSIX.2 B.3.2.2 "popen() shall ensure that any streams
91 from previous popen() calls that remain open in the
92 parent process are closed in the new child process. */
93 for (old = pidlist; old; old = old->next)
94 close (fileno (old->fp)); /* don't allow a flush */
96 execl ("/bin/sh", "sh", "-c", name, NULL);
103 state = XMALLOC (struct pipe_state);
108 /* If we don't do this, GDB simply exits when the remote side dies. */
109 signal (SIGPIPE, SIG_IGN);
115 pipe_close (serial_t scb)
117 struct pipe_state *state = scb->state;
120 int pid = state->pid;
126 /* Might be useful to check that the child does die. */
130 static struct serial_ops pipe_ops;
133 _initialize_ser_pipe (void)
135 struct serial_ops *ops = XMALLOC (struct serial_ops);
136 memset (ops, sizeof (struct serial_ops), 0);
139 ops->open = pipe_open;
140 ops->close = pipe_close;
141 ops->readchar = ser_unix_readchar;
142 ops->write = ser_unix_write;
143 ops->flush_output = ser_unix_nop_flush_output;
144 ops->flush_input = ser_unix_flush_input;
145 ops->send_break = ser_unix_nop_send_break;
146 ops->go_raw = ser_unix_nop_raw;
147 ops->get_tty_state = ser_unix_nop_get_tty_state;
148 ops->set_tty_state = ser_unix_nop_set_tty_state;
149 ops->print_tty_state = ser_unix_nop_print_tty_state;
150 ops->noflush_set_tty_state = ser_unix_nop_noflush_set_tty_state;
151 ops->setbaudrate = ser_unix_nop_setbaudrate;
152 ops->setstopbits = ser_unix_nop_setstopbits;
153 ops->drain_output = ser_unix_nop_drain_output;
154 ops->async = ser_unix_async;
155 serial_add_interface (ops);