From f3c8ff41bf688d23419c958a36de30847b694bc7 Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Tue, 30 Jul 2013 11:01:50 +0800
Subject: [PATCH] Usermode/libposix - PTY Support (stubbed)

---
 Usermode/Libraries/libposix.so_src/Makefile   |  2 +-
 .../libposix.so_src/include_exp/pty.h         | 22 ++++++++
 .../libposix.so_src/include_exp/unistd.h      |  3 ++
 Usermode/Libraries/libposix.so_src/pty.c      | 50 +++++++++++++++++++
 Usermode/Libraries/libposix.so_src/unistd.c   | 20 ++++++++
 5 files changed, 96 insertions(+), 1 deletion(-)
 create mode 100644 Usermode/Libraries/libposix.so_src/include_exp/pty.h
 create mode 100644 Usermode/Libraries/libposix.so_src/pty.c

diff --git a/Usermode/Libraries/libposix.so_src/Makefile b/Usermode/Libraries/libposix.so_src/Makefile
index ce28c7e4..ca566cdc 100644
--- a/Usermode/Libraries/libposix.so_src/Makefile
+++ b/Usermode/Libraries/libposix.so_src/Makefile
@@ -11,7 +11,7 @@ LDFLAGS  += -soname libposix.so -Map map.txt -lc
 OBJ  = main.o unistd.o dirent.o stat.o utmpx.o termios.o
 OBJ += pwd.o syslog.o sys_time.o sys_ioctl.o sys_resource.o
 OBJ += fcntl.o clocks.o sys_wait.o unistd_crypt.o
-OBJ += grp.o
+OBJ += grp.o pty.o
 DEPFILES := $(OBJ:%.o=%.d)
 BIN = libposix.so
 
diff --git a/Usermode/Libraries/libposix.so_src/include_exp/pty.h b/Usermode/Libraries/libposix.so_src/include_exp/pty.h
new file mode 100644
index 00000000..03b3d56e
--- /dev/null
+++ b/Usermode/Libraries/libposix.so_src/include_exp/pty.h
@@ -0,0 +1,22 @@
+/*
+ * Acess2 POSIX Emulation Layer
+ * - By John Hodge
+ * 
+ * pty.h
+ * - PTY Management
+ *
+ * BSD Conforming (Non-POSIX)
+ */
+#ifndef _LIBPOSIX__PTY_H_
+#define _LIBPOSIX__PTY_H_
+
+#include <termios.h>
+#include <unistd.h>
+
+extern int openpty(int *amaster, int *aslave, char *name, const struct termios *termp, const struct winsize *winp);
+extern pid_t forkpty(int *amaster, char *name, const struct termios *termp, const struct winsize *winp);
+// - utmp.h?
+extern int login_tty(int fd);
+
+#endif
+
diff --git a/Usermode/Libraries/libposix.so_src/include_exp/unistd.h b/Usermode/Libraries/libposix.so_src/include_exp/unistd.h
index b0b83749..f24011ae 100644
--- a/Usermode/Libraries/libposix.so_src/include_exp/unistd.h
+++ b/Usermode/Libraries/libposix.so_src/include_exp/unistd.h
@@ -83,6 +83,9 @@ extern int	usleep(useconds_t usec);
 // - crypt.c
 extern char	*crypt(const char *key, const char *salt);
 
+// - pty.c
+extern char	*ttyname(int fd);
+extern int	ttyname_r(int fd, char *buf, size_t buflen);
 
 // signal.h / sys/types.h
 extern int kill(pid_t pid, int sig);
diff --git a/Usermode/Libraries/libposix.so_src/pty.c b/Usermode/Libraries/libposix.so_src/pty.c
new file mode 100644
index 00000000..f8c21683
--- /dev/null
+++ b/Usermode/Libraries/libposix.so_src/pty.c
@@ -0,0 +1,50 @@
+/*
+ * Acess2 POSIX Emulation Layer
+ * - By John Hodge
+ * 
+ * pty.c
+ * - PTY Management
+ *
+ * BSD Conforming (Non-POSIX)
+ */
+#include <pty.h>
+#include <errno.h>
+#include <unistd.h>
+#include <acess/sys.h>
+#include <acess/devices.h>
+#include <acess/devices/pty.h>
+
+// === CODE ===
+int openpty(int *amaster, int *aslave, char *name, const struct termios *termp, const struct winsize *winp)
+{
+	errno = ENOTIMPL;
+	return -1;
+}
+
+pid_t forkpty(int *amaster, char *name, const struct termios *termp, const struct winsize *winp)
+{
+	int child;
+	
+	int ret = openpty(amaster, &child, name, termp, winp);
+	if(ret)	return -1;
+	
+	pid_t rv = fork();
+	if(rv)	return rv;
+
+	login_tty(child);
+
+	// In child
+	dup2(child, 0);
+	dup2(child, 1);
+	dup2(child, 2);
+	close(child);
+
+	return 0;
+}
+
+// - utmp.h?
+int login_tty(int fd)
+{
+	// nop!
+	return 0;
+}
diff --git a/Usermode/Libraries/libposix.so_src/unistd.c b/Usermode/Libraries/libposix.so_src/unistd.c
index 545ef164..211948f8 100644
--- a/Usermode/Libraries/libposix.so_src/unistd.c
+++ b/Usermode/Libraries/libposix.so_src/unistd.c
@@ -252,3 +252,23 @@ char *getpass(const char *prompt)
 	return passbuf;
 }
 
+char *ttyname(int fd)
+{
+	static char ttyname_buf[32];
+	errno = ttyname_r(fd, ttyname_buf, sizeof(ttyname_buf));
+	if(errno)	return NULL;
+	
+	return ttyname_buf;
+}
+int ttyname_r(int fd, char *buf, size_t buflen)
+{
+	 int	type = _SysIOCtl(fd, DRV_IOCTL_TYPE, NULL);
+	if( type == -1 )
+		return errno;
+	if( type != DRV_TYPE_TERMINAL )
+		return ENOTTY;
+
+	_SysIOCtl(fd, PTY_IOCTL_GETID, NULL);	
+
+	return ENOTIMPL;
+}
-- 
2.20.1