+#if defined __sun /* Solaris */
+ if (fstat (fd, &st) < 0)
+ return errno;
+ if (!(S_ISCHR (st.st_mode) && major (st.st_rdev) == 0))
+ {
+ errno = ENOTTY;
+ return errno;
+ }
+ {
+ /* Master ptys can be recognized through a STREAMS ioctl. See
+ "STREAMS-based Pseudo-Terminal Subsystem"
+ <http://docs.oracle.com/cd/E18752_01/html/816-4855/termsub15-44781.html>
+ and "STREAMS ioctl commands"
+ <http://docs.oracle.com/cd/E18752_01/html/816-5177/streamio-7i.html>
+ */
+ struct strioctl ioctl_arg;
+ ioctl_arg.ic_cmd = ISPTM;
+ ioctl_arg.ic_timout = 0;
+ ioctl_arg.ic_len = 0;
+ ioctl_arg.ic_dp = NULL;
+
+ if (ioctl (fd, I_STR, &ioctl_arg) < 0)
+ {
+ errno = ENOTTY;
+ return errno;
+ }
+ }
+ {
+ char tmpbuf[9 + 10 + 1];
+ int n = sprintf (tmpbuf, "/dev/pts/%u", minor (st.st_rdev));
+ if (n >= buflen)
+ {
+ errno = ERANGE;
+ return errno;
+ }
+ memcpy (buf, tmpbuf, n + 1);
+ }
+#else