X-Git-Url: https://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-cloexec.c;h=374de3038672af3ca72599558dff97bc4f41cabf;hb=1bb384c44db25aef8f8b455cef22af32d8401abc;hp=8df733a70bfeeb85d56de8e87e3a8dc0e6d31459;hpb=d8ccc13ba3ba05654f9be09bba5492cc8da30c3b;p=gnulib.git

diff --git a/tests/test-cloexec.c b/tests/test-cloexec.c
index 8df733a70..374de3038 100644
--- a/tests/test-cloexec.c
+++ b/tests/test-cloexec.c
@@ -1,5 +1,5 @@
 /* Test duplicating non-inheritable file descriptors.
-   Copyright (C) 2009 Free Software Foundation, Inc.
+   Copyright (C) 2009-2011 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -22,8 +22,6 @@
 
 #include <errno.h>
 #include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <unistd.h>
 
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
@@ -32,17 +30,8 @@
 # include <windows.h>
 #endif
 
-#define ASSERT(expr) \
-  do                                                                         \
-    {                                                                        \
-      if (!(expr))                                                           \
-        {                                                                    \
-          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
-          fflush (stderr);                                                   \
-          abort ();                                                          \
-        }                                                                    \
-    }                                                                        \
-  while (0)
+#include "binary-io.h"
+#include "macros.h"
 
 /* Return non-zero if FD is open and inheritable across exec/spawn.  */
 static int
@@ -66,6 +55,21 @@ is_inheritable (int fd)
 #endif
 }
 
+#if !O_BINARY
+# define setmode(f,m) zero ()
+static int zero (void) { return 0; }
+#endif
+
+/* Return non-zero if FD is open in the given MODE, which is either
+   O_TEXT or O_BINARY.  */
+static int
+is_mode (int fd, int mode)
+{
+  int value = setmode (fd, O_BINARY);
+  setmode (fd, value);
+  return mode == value;
+}
+
 int
 main (void)
 {
@@ -94,6 +98,21 @@ main (void)
   ASSERT (!is_inheritable (fd));
   ASSERT (close (fd2) == 0);
 
+  /* On systems that distinguish between text and binary mode,
+     dup_cloexec reuses the mode of the source.  */
+  setmode (fd, O_BINARY);
+  ASSERT (is_mode (fd, O_BINARY));
+  fd2 = dup_cloexec (fd);
+  ASSERT (fd < fd2);
+  ASSERT (is_mode (fd2, O_BINARY));
+  ASSERT (close (fd2) == 0);
+  setmode (fd, O_TEXT);
+  ASSERT (is_mode (fd, O_TEXT));
+  fd2 = dup_cloexec (fd);
+  ASSERT (fd < fd2);
+  ASSERT (is_mode (fd2, O_TEXT));
+  ASSERT (close (fd2) == 0);
+
   /* Test error handling.  */
   errno = 0;
   ASSERT (set_cloexec_flag (-1, false) == -1);