1 files changed, 89 insertions, 0 deletions
diff --git a/src/util/pty/initialize_slave.c b/src/util/pty/initialize_slave.c
new file mode 100644
index 000000000..1f7327880
--- /dev/null
+++ b/src/util/pty/initialize_slave.c
@@ -0,0 +1,89 @@
+/*
+ * pty_open_slave: open slave side of terminal, clearing for use.
+ * and utmp entries.
+ *
+ * Copyright 1990 by the Massachusetts Institute of Technology.
+ *
+ * 
+ *Permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission.  M.I.T. makes no representations about the suitability of
+ * this software for any purpose.  It is provided "as is" without express
+ * or implied warranty.
+ * 
+ */
+
+#include "mit-copyright.h"
+#include <com_err.h>
+#include "libpty.h"
+#include "pty-int.h"
+
+long pty_initialize_slave (fd)
+    int fd;
+{
+#if defined(POSIX_TERMIOS) && !defined(ultrix)
+    struct termios new_termio;
+#else
+    struct sgttyb b;
+#endif /* POSIX_TERMIOS */
+    int pid;
+#ifdef POSIX_SIGNALS
+    struct sigaction sa;
+    /* Initialize "sa" structure. */
+    (void) sigemptyset(&sa.sa_mask);
+    sa.sa_flags = 0;
+    
+#endif
+	    
+#ifdef HAVE_STREAMS
+    while (ioctl (fd, I_POP, 0) == 0); /*Clear out any old lined's*/
+#ifdef HAVE_LINE_PUSH
+    if (line_push(fd) < 0)
+	{
+	    (void) close(fd); fd = -1;
+	    return PTY_OPEN_SLAVE_LINE_PUSHFAIL;
+	}
+#else /*No line_push */
+#ifdef sun
+    if (ioctl(fd, I_PUSH, "ptem") < 0)
+	return PTY_OPEN_SLAVE_PUSH_FAIL;
+    if (ioctl(fd, I_PUSH, "ldterm") < 0)
+	return PTY_OPEN_SLAVE_PUSH_FAIL;
+    if (ioctl(fd, I_PUSH, "ttcompat") < 0)
+	return PTY_OPEN_SLAVE_PUSH_FAIL;
+
+#endif /*SUN*/
+#endif /*LINE_PUSH*/
+#endif /*HAVE_STREAMS*/
+
+    /*
+	 * Under Ultrix 3.0, the pgrp of the slave pty terminal
+	 * needs to be set explicitly.  Why rlogind works at all
+	 * without this on 4.3BSD is a mystery.
+	 */
+#ifdef GETPGRP_ONEARG
+    pid = getpgrp(getpid());
+#else
+    pid = getpgrp();
+#endif
+
+#ifdef TIOCSPGRP
+    ioctl(fd, TIOCSPGRP, &pid);
+#endif
+
+    
+#if defined(POSIX_TERMIOS) && !defined(ultrix)
+	tcsetpgrp(fd, pid);
+	tcgetattr(fd,&new_termio);
+	new_termio.c_cc[VMIN] = 1;
+	new_termio.c_cc[VTIME] = 0;
+    tcsetattr(fd,TCSANOW,&new_termio);
+#endif /* POSIX_TERMIOS */
+
+    return 0;
+}