* cygwin.din (ptsname_r): Export.

* fhandler.cc (fhandler_base::ptsname_r): Define.
* fhandler.h (fhandler_base::ptsname): Delete.
(fhandler_base::ptsname_r): Declare.
(fhandler_pty_master::ptsname_r): Declare.
* fhandler_tty.cc (fhandler_pty_master::ptsname): Delete.
(fhandler_pty_master::ptsname_r): New reentrant function derived from previous
ptsname.
* syscalls.cc (ptsname_r): Implement new function with functionality similar to
Linux.
(ptsname): Use ptsname_r () to fill out buf.
* include/cygwin/stdlib.h (ptsname_r): Declare.
* include/cygwin/version.h: Bump CYGWIN_VERSION_API_MINOR to 255 to reflect
export of ptsname_r.
* pinfo.cc (pinfo::wait): Return bool rather than int.
* pinfo.h (info::wait): Ditto.
(pinfo::reattach): Define !defined(_SIGPROC_H) case for consistency.
* sigproc.cc (child_info_spawn::reattach_children): Use correct dwProcessId
rather than pid when duplicating handle.

winsup/cygwin/ChangeLog

@@ -1,3 +1,26 @@
+2011-11-07  Christopher Faylor  <me.cygwin2011@cgf.cx>
+
+	* cygwin.din (ptsname_r): Export.
+	* fhandler.cc (fhandler_base::ptsname_r): Define.
+	* fhandler.h (fhandler_base::ptsname): Delete.
+	(fhandler_base::ptsname_r): Declare.
+	(fhandler_pty_master::ptsname_r): Declare.
+	* fhandler_tty.cc (fhandler_pty_master::ptsname): Delete.
+	(fhandler_pty_master::ptsname_r): New reentrant function derived from
+	previous ptsname.
+	* syscalls.cc (ptsname_r): Implement new function with functionality
+	similar to Linux.
+	(ptsname): Use ptsname_r () to fill out buf.
+	* include/cygwin/stdlib.h (ptsname_r): Declare.
+	* include/cygwin/version.h: Bump CYGWIN_VERSION_API_MINOR to 255 to
+	reflect export of ptsname_r.
+
+	* pinfo.cc (pinfo::wait): Return bool rather than int.
+	* pinfo.h (info::wait): Ditto.
+	(pinfo::reattach): Define !defined(_SIGPROC_H) case for consistency.
+	* sigproc.cc (child_info_spawn::reattach_children): Use correct
+	dwProcessId rather than pid when duplicating handle.
+
 2011-11-07  Corinna Vinschen  <corinna@vinschen.de>
 
 	* fhandler.cc (CHUNK_SIZE): Drop NO_COPY.

winsup/cygwin/cygwin.din

@@ -1277,6 +1277,7 @@ pthread_spin_unlock SIGFE
 pthread_testcancel SIGFE
 pthread_yield = sched_yield SIGFE
 ptsname SIGFE
+ptsname_r SIGFE
 putc SIGFE
 _putc = putc SIGFE
 putc_unlocked SIGFE

winsup/cygwin/fhandler.cc

@@ -1407,6 +1407,13 @@ fhandler_base::tcgetsid ()
   return -1;
 }
 
+int
+fhandler_base::ptsname_r (char *, size_t)
+{
+  set_errno (ENOTTY);
+  return ENOTTY;
+}
+
 void
 fhandler_base::operator delete (void *p)
 {

winsup/cygwin/fhandler.h

@@ -381,7 +381,7 @@ public:
   virtual pid_t get_popen_pid () const {return 0;}
   virtual bool isdevice () const { return true; }
   virtual bool isfifo () const { return false; }
-  virtual char *ptsname () { return NULL;}
+  virtual int ptsname_r (char *, size_t);
   virtual class fhandler_socket *is_socket () { return NULL; }
   virtual class fhandler_console *is_console () { return 0; }
   virtual int is_windows () {return 0; }
@@ -1486,7 +1486,7 @@ public:
   int tcflush (int);
   int ioctl (unsigned int cmd, void *);
 
-  char *ptsname ();
+  int ptsname_r (char *, size_t);
 
   bool hit_eof ();
   bool setup ();

winsup/cygwin/fhandler_tty.cc

@@ -1419,13 +1419,19 @@ fhandler_pty_master::ioctl (unsigned int cmd, void *arg)
   return 0;
 }
 
-char *
+int
-fhandler_pty_master::ptsname ()
+fhandler_pty_master::ptsname_r (char *buf, size_t buflen)
 {
-  static char buf[TTY_NAME_MAX];
+  char tmpbuf[TTY_NAME_MAX];
 
-  __small_sprintf (buf, "/dev/pty%d", get_unit ());
+  __small_sprintf (tmpbuf, "/dev/pty%d", get_unit ());
-  return buf;
+  if (buflen <= strlen (tmpbuf))
+    {
+      set_errno (ERANGE);
+      return ERANGE;
+    }
+  strcpy (buf, tmpbuf);
+  return 0;
 }
 
 void

winsup/cygwin/include/cygwin/stdlib.h

@@ -30,6 +30,7 @@ long random (void);
 char *setstate (const char *state);
 void srandom (unsigned);
 char *ptsname (int);
+int ptsname_r(int, char *, size_t);
 int grantpt (int);
 int unlockpt (int);
 #endif /*__STRICT_ANSI__*/

winsup/cygwin/include/cygwin/version.h

@@ -423,12 +423,13 @@ details. */
       252: CW_CVT_ENV_TO_WINENV added.
       253: Export TIOCSCTTY, tcgetsid.
       254: Export getgrouplist.
+      255: Export ptsname_r.
      */
 
      /* Note that we forgot to bump the api for ualarm, strtoll, strtoull */
 
 #define CYGWIN_VERSION_API_MAJOR 0
-#define CYGWIN_VERSION_API_MINOR 254
+#define CYGWIN_VERSION_API_MINOR 255
 
      /* There is also a compatibity version number associated with the
 	shared memory regions.  It is incremented when incompatible

winsup/cygwin/pinfo.cc

@@ -975,10 +975,10 @@ _pinfo::dup_proc_pipe (HANDLE hProcess)
 }
 
 /* function to set up the process pipe and kick off proc_waiter */
-int
+bool
 pinfo::wait ()
 {
-  /* If rd_proc_pipe that means we're in an execed process which already has
+  /* If rd_proc_pipe != NULL we're in an execed process which already has
      grabbed the read end of the pipe from the previous cygwin process running
      with this pid.  */
   if (!rd_proc_pipe)
@@ -989,13 +989,13 @@ pinfo::wait ()
 	{
 	  system_printf ("Couldn't create pipe tracker for pid %d, %E",
 			 (*this)->pid);
-	  return 0;
+	  return false;
 	}
 
       if (!(*this)->dup_proc_pipe (hProcess))
 	{
 	  system_printf ("Couldn't duplicate pipe topid %d(%p), %E", (*this)->pid, hProcess);
-	  return 0;
+	  return false;
 	}
     }
 
@@ -1013,7 +1013,7 @@ pinfo::wait ()
 		      (*this)->pid, (*this)->dwProcessId, rd_proc_pipe);
     }
 
-  return 1;
+  return true;
 }
 
 void

winsup/cygwin/pinfo.h

@@ -153,7 +153,7 @@ public:
   pinfo (pid_t n, DWORD flag) : rd_proc_pipe (NULL), hProcess (NULL), waiter_ready (0), wait_thread (NULL) {init (n, flag, NULL);}
   void thisproc (HANDLE) __attribute__ ((regparm (2)));
   void release ();
-  int wait () __attribute__ ((regparm (1)));
+  bool wait () __attribute__ ((regparm (1)));
   ~pinfo ()
   {
     if (destroy && procinfo)
@@ -173,6 +173,7 @@ public:
   operator _pinfo * () const {return procinfo;}
   void preserve () { destroy = false; }
 #ifndef _SIGPROC_H
+  int reattach () {system_printf ("reattach is not here"); return 0;}
   int remember () {system_printf ("remember is not here"); return 0;}
 #else
   int reattach ()

winsup/cygwin/sigproc.cc

@@ -866,7 +866,7 @@ child_info_spawn::reattach_children ()
 				false, DUPLICATE_SAME_ACCESS))
 	debug_printf ("couldn't duplicate parent %p handles for forked children after exec, %E",
 		       children[i].rd_proc_pipe);
-      else if (!(p.hProcess = OpenProcess (PROCESS_QUERY_INFORMATION, false, p->pid)))
+      else if (!(p.hProcess = OpenProcess (PROCESS_QUERY_INFORMATION, false, p->dwProcessId)))
 	CloseHandle (p.rd_proc_pipe);
       else if (!p.reattach ())
 	{

winsup/cygwin/syscalls.cc

@@ -2906,10 +2906,23 @@ getpgrp (void)
 extern "C" char *
 ptsname (int fd)
 {
+  static char buf[TTY_NAME_MAX];
+  return ptsname_r (fd, buf, sizeof (buf)) == 0 ? buf : NULL;
+}
+
+extern "C" int
+ptsname_r (int fd, char *buf, size_t buflen)
+{
+  if (!buf)
+    {
+      set_errno (EINVAL);
+      return EINVAL;
+    }
+
   cygheap_fdget cfd (fd);
   if (cfd < 0)
     return 0;
-  return (char *) (cfd->ptsname ());
+  return cfd->ptsname_r (buf, buflen);
 }
 
 static int __stdcall