* Makefile.in (DLL_OFILES): Add bsdlib.o.

	* autoload.cc (RegisterServiceProcess): Add.
	* bsdlib.cc: New file.
	(daemon): New function.
	(login_tty): Ditto.
	(openpty): Ditto.
	(forkpty): Ditto.
	* cygwin.din: Export daemon, forkpty, login_tty, logwtmp, updwtmp,
	openpty and revoke.
	* syscalls.cc (updwtmp): New function, writing to wtmp exclusively.
	(logwtmp): Ditto.
	(login): Call updwtmp instead of writing to wtmp by itself.
	(logout): Ditto.
	* tty.cc (revoke): New funtion.
	* include/paths.h: Define _PATH_DEVNULL.
	* include/pty.h: New header.
	* include/cygwin/version.h: Bump API minor number.
	* include/sys/utmp.h: Declare logwtmp with const arguments.
	Declare updwtmp.
	* lib/iruserok.c: New file.
	(ruserok): New function.
	(iruserok): Ditto.
	(__ivaliduser): Ditto.
	(__icheckhost): Ditto.

1 files changed, 165 insertions, 0 deletions

diff --git a/winsup/cygwin/libc/bsdlib.cc b/winsup/cygwin/libc/bsdlib.cc
new file mode 100644
index 000000000..acf43adbf
--- /dev/null
+++ b/winsup/cygwin/libc/bsdlib.cc
@@ -0,0 +1,165 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * CV 2003-09-10: Cygwin specific changes applied.  Code simplified just
+ *                for Cygwin alone.
+ */
+
+#include "winsup.h"
+#include <stdlib.h>
+#include <utmp.h>
+#include <unistd.h>
+#include <sys/termios.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include "cygerrno.h"
+
+extern "C" int
+daemon (int nochdir, int noclose)
+{
+  int fd;
+
+  switch (fork ())
+    {
+      case -1:
+	return -1;
+      case 0:
+	if (!wincap.is_winnt ())
+	  {
+	    /* Register as service under 9x/Me which allows to close
+	       the parent window with the daemon still running.
+	       This function only exists on 9x/Me and is autoloaded
+	       so it fails silently on NT. */
+	    DWORD WINAPI RegisterServiceProcess (DWORD, DWORD);
+	    RegisterServiceProcess (0, 1);
+	  }
+	break;
+      default:
+	/* This sleep avoids a race condition which kills the
+	   child process if parent is started by a NT/W2K service.
+	   FIXME: Is that still true? */
+	Sleep (1000L);
+	_exit (0);
+    }
+  if (setsid () == -1)
+    return -1;
+  if (!nochdir)
+    chdir ("/");
+  if (!noclose && (fd = open (_PATH_DEVNULL, O_RDWR, 0)) >= 0)
+    {
+      dup2 (fd, STDIN_FILENO);
+      dup2 (fd, STDOUT_FILENO);
+      dup2 (fd, STDERR_FILENO);
+      if (fd > 2)
+	close (fd);
+    }
+  return 0;
+}
+
+extern "C" int
+login_tty (int fd)
+{
+  char *fdname;
+  int newfd;
+
+  if (setsid () == -1)
+    return -1;
+  if ((fdname = ttyname (fd)))
+    {
+      if (fd != STDIN_FILENO)
+        close (STDIN_FILENO);
+      if (fd != STDOUT_FILENO)
+        close (STDOUT_FILENO);
+      if (fd != STDERR_FILENO)
+        close (STDERR_FILENO);
+      newfd = open (fdname, O_RDWR);
+      close (newfd);
+    }
+  dup2 (fd, STDIN_FILENO);
+  dup2 (fd, STDOUT_FILENO);
+  dup2 (fd, STDERR_FILENO);
+  if (fd > 2)
+    close (fd);
+  return 0;
+}
+
+extern "C" int
+openpty (int *amaster, int *aslave, char *name, struct termios *termp,
+	 struct winsize *winp)
+{
+  int master, slave;
+  char pts[MAX_PATH];
+
+  if ((master = open ("/dev/ptmx", O_RDWR | O_NOCTTY)) >= 0)
+    {
+      grantpt (master);
+      unlockpt (master);
+      strcpy (pts, ptsname (master));
+      revoke (pts);
+      if ((slave = open (pts, O_RDWR | O_NOCTTY)) >= 0)
+        {
+	  if (amaster)
+	    *amaster = master;
+	  if (aslave)
+	    *aslave = slave;
+	  if (name)
+	    strcpy (name, pts);
+	  if (termp)
+	    tcsetattr (slave, TCSAFLUSH, termp);
+	  if (winp)
+	    ioctl (slave, TIOCSWINSZ, (char *) winp);
+	  return 0;
+	}
+      close (master);
+    }
+  set_errno (ENOENT);
+  return -1;
+}
+
+extern "C" int
+forkpty (int *amaster, char *name, struct termios *termp, struct winsize *winp)
+{
+  int master, slave, pid;
+
+  if (openpty (&master, &slave, name, termp, winp) == -1)
+    return -1;
+  switch (pid = fork ())
+    {
+      case -1:
+	return -1;
+      case 0:
+	close (master);
+	login_tty (slave);
+	return 0;
+    }
+  if (amaster)
+    *amaster = master;
+  close (slave);
+  return pid;
+}
+