--- libaitio/src/pty.c	2011/09/19 21:59:58	1.1.2.1
+++ libaitio/src/pty.c	2011/09/19 22:41:04	1.1.2.2
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@openbsd-bg.org>
 *
 * $Author: misho $
-* $Id: pty.c,v 1.1.2.1 2011/09/19 21:59:58 misho Exp $
+* $Id: pty.c,v 1.1.2.2 2011/09/19 22:41:04 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -89,4 +89,80 @@ ioFreePTY(const char *ttyname)
 
 	chown(ttyname, (uid_t) 0, (gid_t) 0);
 	chmod(ttyname, (mode_t) 0666);
+}
+
+/*
+ * ioChgWinPTY() Change window size of PTY
+ * @ptyfd = master fd, pty
+ * @row = row
+ * @col = col
+ * @xpxl = x pixels
+ * @ypxl = y pixels
+ * return: -1 error or 0 ok
+ */
+inline int
+ioChgWinPTY(int ptyfd, u_short row, u_short col, u_short xpxl, u_short ypxl)
+{
+	struct winsize w;
+
+	w.ws_row = row;
+	w.ws_col = col;
+	w.ws_xpixel = xpxl;
+	w.ws_ypixel = ypxl;
+
+	if (ioctl(ptyfd, TIOCSWINSZ, &w) == -1) {
+		LOGERR;
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * ioSetOwnerPTY() Set owner to PTY
+ * @ttyname = tty filename
+ * @UID = uid
+ * @GID = gid
+ * return: -1 error or 0 ok
+ */
+int
+ioSetOwnerPTY(const char *ttyname, uid_t UID, gid_t GID)
+{
+	struct group *grp;
+	gid_t gid;
+	mode_t mode;
+	struct stat st;
+
+	assert(ttyname);
+	if (!ttyname) {
+		io_SetErr(EINVAL, "Error:: invalid arguments ...");
+		return -1;
+	}
+
+	grp = getgrnam("tty");
+	if (!grp) {
+		gid = GID;
+		mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
+	} else {
+		gid = grp->gr_gid;
+		mode = S_IRUSR | S_IWUSR | S_IWGRP;
+	}
+
+	if (stat(ttyname, &st) == -1) {
+		LOGERR;
+		return -1;
+	}
+
+	if (st.st_uid != UID || st.st_gid != gid)
+		if (chown(ttyname, UID, gid) == -1) {
+			LOGERR;
+			return -1;
+		}
+	if ((st.st_mode & (S_IRWXU|S_IRWXG|S_IRWXO)) != mode)
+		if (chmod(ttyname, mode) == -1) {
+			LOGERR;
+			return -1;
+		}
+
+	return 0;
 }