--- libaitio/src/pty.c	2011/09/19 22:41:04	1.1.2.2
+++ libaitio/src/pty.c	2011/09/19 23:09:16	1.1.2.3
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: pty.c,v 1.1.2.2 2011/09/19 22:41:04 misho Exp $
+* $Id: pty.c,v 1.1.2.3 2011/09/19 23:09:16 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -47,7 +47,7 @@ SUCH DAMAGE.
 
 
 /*
- * ioAllocPTY() Allocate new PTY
+ * ioAllocPTY() Allocate new PTY and TTY
  * @ptyfd = master fd, pty
  * @ttyfd = slave fd, tty
  * @name = tty device name if not null
@@ -76,12 +76,12 @@ ioAllocPTY(int *ptyfd, int *ttyfd, char * __restrict n
 }
 
 /*
- * ioFreePTY() Release PTY
+ * ioFreeTTY() Release TTY
  * @ttyname = tty filename
  * return: none
  */
 inline void
-ioFreePTY(const char *ttyname)
+ioFreeTTY(const char *ttyname)
 {
 	assert(ttyname);
 	if (!ttyname)
@@ -119,14 +119,14 @@ ioChgWinPTY(int ptyfd, u_short row, u_short col, u_sho
 }
 
 /*
- * ioSetOwnerPTY() Set owner to PTY
+ * ioSetOwnerTTY() Set owner to TTY
  * @ttyname = tty filename
  * @UID = uid
  * @GID = gid
  * return: -1 error or 0 ok
  */
 int
-ioSetOwnerPTY(const char *ttyname, uid_t UID, gid_t GID)
+ioSetOwnerTTY(const char *ttyname, uid_t UID, gid_t GID)
 {
 	struct group *grp;
 	gid_t gid;
@@ -163,6 +163,59 @@ ioSetOwnerPTY(const char *ttyname, uid_t UID, gid_t GI
 			LOGERR;
 			return -1;
 		}
+
+	return 0;
+}
+
+/*
+ * ioSetSidTTY() Makes the process's controlling TTY and sets it to sane modes.
+ * @ttyfd = slave fd, tty
+ * @ttyname = tty filename
+ * return: -1 error or 0 ok
+ */
+int
+ioSetSidTTY(int *ttyfd, const char *ttyname)
+{
+	int fd;
+
+	/* First disconnect from the old controlling tty. */
+#ifdef TIOCNOTTY
+	fd = open(_PATH_TTY, O_RDWR | O_NOCTTY);
+	if (fd >= 0) {
+		ioctl(fd, TIOCNOTTY, NULL);
+		close(fd);
+	}
+#endif
+	setsid();
+
+	/* Verify that we are successfully disconnected from the controlling tty. */
+	fd = open(_PATH_TTY, O_RDWR | O_NOCTTY);
+	if (fd >= 0) {
+		io_SetErr(ENXIO, "Error:: Failed to disconnect from controlling tty.");
+		close(fd);
+		return -1;
+	}
+	/* Make it our controlling tty. */
+#ifdef TIOCSCTTY
+	if (ioctl(*ttyfd, TIOCSCTTY, NULL) == -1) {
+		LOGERR;
+		return -1;
+	}
+#endif
+	fd = open(ttyname, O_RDWR);
+	if (fd == -1) {
+		LOGERR;
+		return -1;
+	} else
+		close(fd);
+
+	/* Verify that we now have a controlling tty. */
+	fd = open(_PATH_TTY, O_WRONLY);
+	if (fd == -1) {
+		LOGERR;
+		return -1;
+	} else
+		close(fd);
 
 	return 0;
 }