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author | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
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committer | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
commit | 071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch) | |
tree | 5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/ser-tcp.c | |
parent | 1730ec6b1848f0f32154277f788fb29f88d8475b (diff) | |
download | gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.zip gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.gz gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.bz2 |
Initial creation of sourceware repository
Diffstat (limited to 'gdb/ser-tcp.c')
-rw-r--r-- | gdb/ser-tcp.c | 358 |
1 files changed, 0 insertions, 358 deletions
diff --git a/gdb/ser-tcp.c b/gdb/ser-tcp.c deleted file mode 100644 index c551337..0000000 --- a/gdb/ser-tcp.c +++ /dev/null @@ -1,358 +0,0 @@ -/* 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); -} |