Fix multi-leg promotions

[xboard.git] / childio.c

diff --git a/childio.c b/childio.c
index 7fd3d14..1d1f1a7 100644 (file)
--- a/childio.c
+++ b/childio.c
@@ -1,9 +1,12 @@
 /*
- * childio.c -- set up communication with child processes $Id:
- * childio.c,v 1.2 1994/11/12 19:31:41 mann Exp mann $
+ * childio.c -- set up communication with child processes
  *
- * Copyright 1991 by Digital Equipment Corporation, Maynard, Massachusetts.
- * Enhancements Copyright 1992-95 Free Software Foundation, Inc.
+ * Copyright 1991 by Digital Equipment Corporation, Maynard,
+ * Massachusetts.
+ *
+ * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005, 2006,
+ * 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Free
+ * Software Foundation, Inc.
  *
  * The following terms apply to Digital Equipment Corporation's copyright
  * interest in XBoard:
@@ -27,25 +30,25 @@
  * SOFTWARE.
  * ------------------------------------------------------------------------
  *
- * The following terms apply to the enhanced version of XBoard distributed
- * by the Free Software Foundation:
+ * The following terms apply to the enhanced version of XBoard
+ * distributed by the Free Software Foundation:
  * ------------------------------------------------------------------------
- * This program is free software; you can redistribute it and/or modify
+ *
+ * GNU XBoard 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.
+ * 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.
+ * GNU XBoard 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.
- * ------------------------------------------------------------------------
+ * along with this program. If not, see http://www.gnu.org/licenses/.  *
  *
- * See the file ChangeLog for a revision history.  */
+ *------------------------------------------------------------------------
+ ** See the file ChangeLog for a revision history.  */
 
 /* This file splits into two entirely different pieces of code
    depending on whether USE_PTYS is 1.  The whole reason for all
@@ -57,6 +60,7 @@
 
 #include "config.h"
 
+#include <stdio.h>
 #include <signal.h>
 #if HAVE_UNISTD_H
 # include <unistd.h>
@@ -64,12 +68,13 @@
 
 #include "common.h"
 #include "frontend.h"
+#include "backend.h" /* for safeStrCpy */
 
 #if !USE_PTYS
 /* This code is for systems where pipes work properly */
 
-void SetUpChildIO(to_prog, from_prog)
-     int to_prog[2], from_prog[2];
+void
+SetUpChildIO (int to_prog[2], int from_prog[2])
 {
     signal(SIGPIPE, SIG_IGN);
     pipe(to_prog);
@@ -95,8 +100,8 @@ void SetUpChildIO(to_prog, from_prog)
 
 int PseudoTTY P((char pty_name[]));
 
-int SetUpChildIO(to_prog, from_prog)
-     int to_prog[2], from_prog[2];
+int
+SetUpChildIO (int to_prog[2], int from_prog[2])
 {
     char pty_name[MSG_SIZ];
 
@@ -123,19 +128,19 @@ int SetUpChildIO(to_prog, from_prog)
 #if HAVE_GRANTPT
 /* This code is for SVR4 */
 
-int PseudoTTY(pty_name)
-     char pty_name[];
+int
+PseudoTTY (char pty_name[])
 {
     extern char *ptsname();
     char *ptss;
     int fd;
-    
+
     fd = open("/dev/ptmx", O_RDWR);
     if (fd < 0) return fd;
     if (grantpt(fd) == -1) return -1;
     if (unlockpt(fd) == -1) return -1;
     if (!(ptss = ptsname(fd))) return -1;
-    strcpy(pty_name, ptss);
+    safeStrCpy(pty_name, ptss, sizeof(pty_name)/sizeof(pty_name[0]));
     return fd;
 }
 
@@ -143,15 +148,15 @@ int PseudoTTY(pty_name)
 #if HAVE__GETPTY
 /* This code is for IRIX */
 
-int PseudoTTY(pty_name)
-     char pty_name[];
+int
+PseudoTTY (char pty_name[])
 {
     int fd;
     char *ptyn;
 
     ptyn = _getpty(&fd, O_RDWR, 0600, 0);
     if (ptyn == NULL) return -1;
-    strcpy(pty_name, ptyn);
+    safeStrCpy(pty_name, ptyn, sizeof(pty_name)/sizeof(pty_name[0]));
     return fd;
 }
 
@@ -159,15 +164,15 @@ int PseudoTTY(pty_name)
 #if HAVE_LIBSEQ
 /* This code is for Sequent DYNIX/ptx.  Untested. --tpm */
 
-int PseudoTTY(pty_name)
-     char pty_name[];
+int
+PseudoTTY (char pty_name[])
 {
     int fd;
     char *slave, *master;
 
     fd = getpseudotty(&slave, &master);
     if (fd < 0) return fd;
-    strcpy(pty_name, slave);
+    safeStrCpy(pty_name, slave, sizeof(pty_name)/sizeof(pty_name[0]));
     return fd;
 }
 
@@ -182,8 +187,8 @@ int PseudoTTY(pty_name)
 #define LAST_PTY_LETTER 'z'
 #endif
 
-int PseudoTTY(pty_name)
-     char pty_name[];
+int
+PseudoTTY (char pty_name[])
 {
   struct stat stb;
   register c, i;
@@ -206,7 +211,7 @@ int PseudoTTY(pty_name)
 #ifdef PTY_NAME_SPRINTF
        PTY_NAME_SPRINTF
 #else
-       sprintf (pty_name, "/dev/pty%c%x", c, i);
+         sprintf (pty_name, "/dev/pty%c%x", c, i);
 #endif /* no PTY_NAME_SPRINTF */
 
 #ifdef PTY_OPEN
@@ -230,7 +235,7 @@ int PseudoTTY(pty_name)
 #ifdef PTY_TTY_NAME_SPRINTF
            PTY_TTY_NAME_SPRINTF
 #else
-            sprintf (pty_name, "/dev/tty%c%x", c, i);
+             sprintf (pty_name,  "/dev/tty%c%x", c, i);
 #endif /* no PTY_TTY_NAME_SPRINTF */
 #ifndef UNIPLUS
            if (access (pty_name, 6) != 0)