251 lines
7.0 KiB
C
251 lines
7.0 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* File: local.c $TOG: local.c /main/5 1999/10/14 15:05:57 mgreess $
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* Language: C
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*
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* (c) Copyright 1989, Hewlett-Packard Company, all rights reserved.
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*
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* (c) Copyright 1993, 1994 Hewlett-Packard Company *
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* (c) Copyright 1993, 1994 International Business Machines Corp. *
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* (c) Copyright 1993, 1994 Sun Microsystems, Inc. *
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* (c) Copyright 1993, 1994 Novell, Inc. *
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*/
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#define __need_timeval /* Needed for "struct timeval" from <time.h>. */
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#define __need_fd_set
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#include <bms/sbport.h>
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#include <time.h>
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#include <errno.h>
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#include <signal.h>
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#include <SPC/spcP.h>
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#include <SPC/spc-proto.h>
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/*
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**
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** Note that the close routines call the parent method AFTER the
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** work done for the child method. This is because the parent method
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** will do all the deallocation.
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**
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*/
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/*----------------------------------------------------------------------+*/
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int close_local_channel_object(SPC_Channel_Ptr channel)
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/*----------------------------------------------------------------------+*/
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{
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Wire *wirelist;
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int result;
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for(wirelist=channel->wire_list; wirelist; wirelist=wirelist->next){
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spc_close(wirelist->fd[READ_SIDE]);
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spc_close(wirelist->fd[WRITE_SIDE]);
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SPC_XtRemoveInput(&wirelist->read_toolkit_id, SPC_Input);
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SPC_XtRemoveInput(&wirelist->except_toolkit_id, SPC_Exception);
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}
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call_parent_method(channel, close, (channel), result);
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if(result==SPC_ERROR)
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return(SPC_ERROR);
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return(TRUE);
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}
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/*----------------------------------------------------------------------+*/
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int write_local_channel_object(SPC_Channel_Ptr channel,
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XeString buffer,
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int nbytes)
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/*----------------------------------------------------------------------+*/
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{
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int result;
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call_parent_method(channel,
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write,
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(channel, buffer, nbytes),
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result);
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if(result==SPC_ERROR)
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return(SPC_ERROR);
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result = SPC_Write_Chars(channel->file_descs[STDIN], buffer, nbytes);
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if(result==ERROR) {
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SPC_Error(SPC_Writing);
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return(SPC_ERROR);
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}
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return(result);
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}
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/* the function exec_proc_local_channel_object is defined in spc-exec.c */
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/*----------------------------------------------------------------------+*/
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int signal_local_channel_object (SPC_Channel_Ptr channel,
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int sig)
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/*----------------------------------------------------------------------+*/
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{
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int result;
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call_parent_method(channel, signal, (channel, sig), result);
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if(result==SPC_ERROR)
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return(SPC_ERROR);
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if(sig == SIGKILL || IS_SPCIO_SIGNAL_PGRP(channel->IOMode))
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result=kill(-(channel->pid), sig);
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else
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result=kill(channel->pid, sig);
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if(result==ERROR)
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return(errno!=ESRCH);
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return(TRUE);
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}
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/*----------------------------------------------------------------------+*/
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int local_channel_object_wait_for_termination(SPC_Channel_Ptr channel)
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/*----------------------------------------------------------------------+*/
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{
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int result;
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call_parent_method(channel, wait_for_termination, (channel), result);
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if(result==SPC_ERROR)
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return(SPC_ERROR);
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/* Do we need to check for remote channel input here? */
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while(IS_ACTIVE(channel)) {
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sigset_t mask;
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sigemptyset(&mask);
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/* the SIGCLD signal handler will take care of us here */
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sigsuspend(&mask);
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}
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return(TRUE);
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}
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/*----------------------------------------------------------------------+*/
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int remove_logfile_local_channel_object(SPC_Channel_Ptr channel)
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/*----------------------------------------------------------------------+*/
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{
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int result;
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call_parent_method(channel, remove_logfile, (channel), result);
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if(unlink(channel->logfile)==ERROR) {
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SPC_Error(SPC_Unlink_Logfile);
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return(SPC_ERROR);
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}
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/* This is malloc'ed memory from open_noio_channel_object() and tempnam() */
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XeFree(channel->logfile);
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return(TRUE);
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}
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extern SPC_Channel_Ptr spc_activation_list;
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/* All this routine does is to look up the channel, and
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call the generic input handler routine */
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/*----------------------------------------------------------------------+*/
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void local_channel_object_input_handler(void * client_data,
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int *source,
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SPCInputId * UNUSED_PARM(id))
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/*----------------------------------------------------------------------+*/
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{
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/* WARNING!!! This routine is NOT XPG3 compliant. The timeval struct */
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/* is the problem here. */
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SPC_Channel_Ptr channel=(SPC_Channel_Ptr) client_data;
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int fd=(*source);
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int connector;
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int len;
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fd_set read_fd_vect, except_fd_vect;
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SPC_Channel_Ptr tmp, this_ptr;
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struct timeval timeout; /* Not part of XPG3 !!! */
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/* This ^&@$#% select is here to get around an X toolkit bug */
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FD_ZERO(&read_fd_vect);
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FD_ZERO(&except_fd_vect);
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FD_SET(fd, &read_fd_vect);
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FD_SET(fd, &except_fd_vect);
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timeout.tv_sec = 0;
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timeout.tv_usec = 0;
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#if defined(SVR4) || defined(__hpux) || defined(__OpenBSD__) || defined(linux)
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select(max_fds, (fd_set*)&read_fd_vect, NULL, (fd_set*)&except_fd_vect, &timeout);
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#else
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/* UX has select defined with int*, not fd_set* parms */
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select(max_fds, (int*)&read_fd_vect, NULL, (int*)&except_fd_vect, &timeout);
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#endif
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if(! (FD_ISSET(fd, &read_fd_vect) || FD_ISSET(fd, &except_fd_vect))) {
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return /* (FALSE) */;
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}
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/* The following is to get around an apparent Xt bug where sometimes
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the client data pointer passed to me is not the one I was expecting.
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*/
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tmp = spc_activation_list;
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this_ptr = NULL;
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while(tmp) {
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if((fd == Stdin(tmp)) || (fd == Stderr(tmp)))
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this_ptr = tmp;
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tmp = tmp->next;
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}
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if(this_ptr == NULL)
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this_ptr = channel;
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if(this_ptr != channel)
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channel = this_ptr;
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if((connector=SPC_fd_to_connector(channel, fd)) == ERROR) {
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SPC_Error(SPC_Bad_Fd);
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return /* (SPC_ERROR) */;
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}
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len = SPC_Input_Handler(channel, connector);
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return /* (len) */;
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}
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int local_channel_object_send_eof(SPC_Channel_Ptr channel)
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{
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Wire *wire = channel->wires[STDIN];
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spc_close(wire->fd[READ_SIDE]);
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spc_close(wire->fd[WRITE_SIDE]);
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SPC_XtRemoveInput(&wire->read_toolkit_id, SPC_Input);
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SPC_XtRemoveInput(&wire->except_toolkit_id, SPC_Exception);
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return(TRUE);
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}
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