* autoload.cc (GetModuleFileNameExA): Add.

(GetModuleInformation): Add.
	(QueryWorkingSet): Add.
	* fhandler.h (fhandler_virtual::get_filebuf): New method.
	* fhandler_proc.cc (PROC_SELF): Define.
	(proc_fhandlers): Change type of self to FH_PROC.
	(fhandler_proc::exists): Return -3 if self.
	(fhandler_proc::fstat): Handle self as symlink.
	(fhandler_proc::fill_filebuf): Handle self.
	* fhandler_process.cc: Include psapi.h.
	(PROCESS_EXENAME): Remove.
	(PROCESS_MAPS): Define.
	(PROCESS_ROOT): Define.
	(PROCESS_EXE): Define.
	(PROCESS_CWD): Define.
	(process_listing): Remove "exename", add "maps, "root", "exe" and
	"cwd" elements.
	(fhandler_process::exists): Return -2 for symlinks.
	(fhandler_process::fstat): Handle symlinks.
	(fill_filebuf): Evaluate pid if pid is 0.  Use exename handling for
	exe.  Handle maps, root and cwd.
	(format_process_maps): New function evaluating "maps".
	* path.cc (symlink_info::set): New method to fill symlink_info
	with data matching virtual symlinks.
	(path_conv::check): Handle virtual symlinks.
	* pinfo.cc (_pinfo::commune_recv): Add PICOM_CWD and PICOM_ROOT
	handling.
	(_pinfo::commune_send): Ditto.
	(_pinfo::root): New function.
	(_pinfo::cwd): New function.
	* pinfo.h (enum picom): Add PICOM_CWD and PICOM_ROOT.
	(_pinfo::root): Declare.
	(_pinfo::cwd): Declare.

winsup/cygwin/pinfo.cc

@@ -380,6 +380,7 @@ extern char **__argv;
 void
 _pinfo::commune_recv ()
 {
+  char pathbuf[CYG_MAX_PATH];
   DWORD nr;
   DWORD code;
   HANDLE hp;
@@ -457,6 +458,32 @@ _pinfo::commune_recv ()
 	  }
 	break;
       }
+    case PICOM_CWD:
+      {
+	unsigned int n = strlen (cygheap->cwd.get (pathbuf, 1, 1, CYG_MAX_PATH)) + 1;
+        CloseHandle (__fromthem); __fromthem = NULL;
+	CloseHandle (hp);
+	if (!WriteFile (__tothem, &n, sizeof n, &nr, NULL))
+	  sigproc_printf ("WriteFile sizeof argv failed, %E");
+	else if (!WriteFile (__tothem, pathbuf, n, &nr, NULL))
+	  sigproc_printf ("WriteFile sizeof argv failed, %E");
+	break;
+      }
+    case PICOM_ROOT:
+      {
+	unsigned int n;
+	if (cygheap->root.exists ())
+	  n = strlen (strcpy (pathbuf, cygheap->root.posix_path ())) + 1;
+	else
+	  n = strlen (strcpy (pathbuf, "/")) + 1;
+        CloseHandle (__fromthem); __fromthem = NULL;
+	CloseHandle (hp);
+	if (!WriteFile (__tothem, &n, sizeof n, &nr, NULL))
+	  sigproc_printf ("WriteFile sizeof argv failed, %E");
+	else if (!WriteFile (__tothem, pathbuf, n, &nr, NULL))
+	  sigproc_printf ("WriteFile sizeof argv failed, %E");
+	break;
+      }
     case PICOM_FIFO:
       {
 	char path[CYG_MAX_PATH + 1];
@@ -588,6 +615,8 @@ _pinfo::commune_send (DWORD code, ...)
   switch (code)
     {
     case PICOM_CMDLINE:
+    case PICOM_CWD:
+    case PICOM_ROOT:
       if (!ReadFile (fromthem, &n, sizeof n, &nr, NULL) || nr != sizeof n)
 	{
 	  __seterrno ();
@@ -654,6 +683,50 @@ out:
   return res;
 }
 
+char *
+_pinfo::root (size_t& n)
+{
+  char *s;
+  if (!this || !pid)
+    return NULL;
+  if (pid != myself->pid)
+    {
+      commune_result cr = commune_send (PICOM_ROOT);
+      s = cr.s;
+      n = cr.n;
+    }
+  else
+    {
+      if (cygheap->root.exists ())
+	s = strdup (cygheap->root.posix_path ());
+      else
+	s = strdup ("/");
+      n = strlen (s) + 1;
+    }
+  return s;
+}
+
+char *
+_pinfo::cwd (size_t& n)
+{
+  char *s;
+  if (!this || !pid)
+    return NULL;
+  if (pid != myself->pid)
+    {
+      commune_result cr = commune_send (PICOM_CWD);
+      s = cr.s;
+      n = cr.n;
+    }
+  else
+    {
+      s = (char *) malloc (CYG_MAX_PATH);
+      cygheap->cwd.get (s, 1, 1, CYG_MAX_PATH);
+      n = strlen (s) + 1;
+    }
+  return s;
+}
+
 char *
 _pinfo::cmdline (size_t& n)
 {