Add ttyname(2).

libc/Makefile

@@ -311,6 +311,7 @@ tfork.o \
 time.o \
 truncateat.o \
 truncate.o \
+ttyname.o \
 umask.o \
 unlinkat.o \
 unlink.o \

libc/include/unistd.h

@@ -136,7 +136,6 @@ void sync(void);
 long sysconf(int);
 pid_t tcgetpgrp(int);
 int tcsetpgrp(int, pid_t);
-char* ttyname(int);
 int ttyname_r(int, char*, size_t);
 
 #if __POSIX_OBSOLETE <= 200801
@@ -195,6 +194,7 @@ int setuid(uid_t);
 unsigned sleep(unsigned);
 int truncate(const char*, off_t);
 int truncateat(int dirfd, const char*, off_t);
+char* ttyname(int);
 int usleep(useconds_t useconds);
 int unlinkat(int, const char*, int);
 int unlink(const char*);

libc/ttyname.cpp

@@ -0,0 +1,30 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix C Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix C Library is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+    License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    ttyname.cpp
+    Returns the name of a terminal.
+
+*******************************************************************************/
+
+#include <unistd.h>
+
+extern "C" char* ttyname(int fd)
+{
+	return isatty(fd) ? (char*) "/dev/tty" : NULL;
+}