Make xopen() skip stdin/stdout/stderr, add xopen_stdio() if you want stdout,

add xopenro() that takes one argument and understands "-" means stdin,
and switch over lots of users.

1 files changed, 3 insertions, 3 deletions

diff --git a/toys/other/oneit.c b/toys/other/oneit.c
index 0e95a104..9be67c05 100644
--- a/toys/other/oneit.c
+++ b/toys/other/oneit.c
@@ -68,11 +68,11 @@ void oneit_main(void)
   for (i = 0; i<ARRAY_LEN(pipes); i++) xsignal(pipes[i], oneit_signaled);
 
   if (toys.optflags & FLAG_3) {
-    // Ensure next available filehandle is #3
-    while (open("/", 0) < 3);
+    // Ensure next available filehandles are #3 and #4
+    while (xopen_stdio("/", 0) < 3);
     close(3);
     close(4);
-    if (pipe(pipes)) perror_exit("pipe");
+    xpipe(pipes);
     fcntl(4, F_SETFD, FD_CLOEXEC);
   }