--- libaitio/src/pty.c	2011/09/19 21:59:58	1.1.2.1
+++ 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 1.1.2.1 2011/09/19 21:59:58 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)
@@ -89,4 +89,133 @@ 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;
+}
+
+/*
+ * ioSetOwnerTTY() Set owner to TTY
+ * @ttyname = tty filename
+ * @UID = uid
+ * @GID = gid
+ * return: -1 error or 0 ok
+ */
+int
+ioSetOwnerTTY(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;
+}
+
+/*
+ * 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;
 }