Add a lock to DIR to make telldir and friends MT-safe.

Clean up stdio.h a bit and remove _THREAD_SAFE.  Some of the
usual macros getc, putc, getchar, putchar are no longer macros.

Approved by:	-arch

1 files changed, 1 insertions, 0 deletions

diff --git a/include/dirent.h b/include/dirent.h
index 2028d7b..191ed35 100644
--- a/include/dirent.h
+++ b/include/dirent.h
@@ -64,6 +64,7 @@ typedef struct _dirdesc {
 	long	dd_seek;	/* magic cookie returned by getdirentries */
 	long	dd_rewind;	/* magic cookie for rewinding */
 	int	dd_flags;	/* flags for readdir */
+	void	*dd_lock;	/* hack to avoid including <pthread.h> */
 	struct _telldir *dd_td;	/* telldir position recording */
 } DIR;