* cygheap.h (class cygheap_fdenum): New class to enumerate used

	fhandlers.
	* dtable.h (class dtable): Add cygheap_fdenum as friend class.
	* fhandler.h (fhandler_base::get_proc_fd_name): New virtual method
	to return a name for /proc/<pid>/fd.
	(fhandler_socket::get_proc_fd_name): Ditto.
	(fhandler_pipe::get_proc_fd_name): Ditto.
	(fhandler_virtual::opendir): Make virtual method.
	(fhandler_process::opendir): New method.
	* fhandler.cc (fhandler_base::get_proc_fd_name): New method.
	* fhandler_process.cc: Include ctype.h.
	(PROCESS_FD): Define.
	(process_listing): Add "fd".
	(fhandler_process::exists): Fix comment.  Return 1 in case of "fd"
	directory. Handle files below "fd".
	(fhandler_process::fstat): Drop "self" handling.  Set correct link
	count for directories.
	(fhandler_process::opendir): New method to handle "fd" directory.
	(fhandler_process::readdir): Add "fd" handling.
	(fhandler_process::open): Drop "self" handling.
	(fhandler_process::fill_filebuf): Ditto.  Add "fd" handling.  Fix
	"maps" output string.
	* fhandler_registry.cc (fhandler_registry::fstat): Set correct link
	count for directories.
	* fhandler_socket.cc (fhandler_socket::get_proc_fd_name): New method.
	* path.cc (symlink_info::set): Fix thinko.
	* pinfo.cc (_pinfo::commune_recv): Rename pathbuf to path throughout.
	Drop local path variable in PICOM_FIFO case.  Fix debug output.
	Close handles as early as possible. Add PICOM_FDS and PICOM_FD
	handling.
	(_pinfo::commune_send): Add PICOM_FDS and PICOM_FD handling.
	(_pinfo::fd): New method.
	(_pinfo::fds): New method.
	* pinfo.h (enum picom): Add PICOM_FDS and PICOM_FD.
	(_pinfo::fd): Declare.
	(_pinfo::fds): Declare.
	* pipe.cc (fhandler_pipe::get_proc_fd_name): New method.

1 files changed, 23 insertions, 0 deletions

diff --git a/winsup/cygwin/cygheap.h b/winsup/cygwin/cygheap.h
index d3baae329..43723244d 100644
--- a/winsup/cygwin/cygheap.h
+++ b/winsup/cygwin/cygheap.h
@@ -384,6 +384,29 @@ class cygheap_fdget : public cygheap_fdmanip
   }
 };
 
+class cygheap_fdenum : public cygheap_fdmanip
+{
+  int start_fd;
+ public:
+  cygheap_fdenum (int start_fd = -1, bool lockit = false)
+  {
+    if (lockit)
+      cygheap->fdtab.lock ();
+    this->start_fd = fd = start_fd < 0 ? -1 : start_fd;
+  }
+  int next ()
+  {
+    while (++fd < (int) cygheap->fdtab.size)
+      if (*(fh = cygheap->fdtab + fd) != NULL)
+        return fd;
+    return -1;
+  }
+  void rewind ()
+  {
+    fd = start_fd;
+  }
+};
+
 class child_info;
 void *__stdcall cygheap_setup_for_child (child_info *ci, bool dup_later) __attribute__ ((regparm(2)));
 void __stdcall cygheap_setup_for_child_cleanup (void *, child_info *, bool) __attribute__ ((regparm(3)));