1 files changed, 92 insertions, 0 deletions
diff --git a/stdio-common/tst-cookie.c b/stdio-common/tst-cookie.c
new file mode 100644
index 0000000000..004ef23b39
--- /dev/null
+++ b/stdio-common/tst-cookie.c
@@ -0,0 +1,92 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <stdio.h>
+
+
+#define THE_COOKIE ((void *) 0xdeadbeeful)
+
+static int errors;
+
+
+static int cookieread_called;
+static ssize_t
+cookieread (void *cookie, char *buf, size_t count)
+{
+  printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
+	  (unsigned long int) cookie);
+  if (cookie != THE_COOKIE)
+    ++errors;
+  cookieread_called = 1;
+  return 42;
+}
+
+
+static int cookiewrite_called;
+static ssize_t
+cookiewrite (void *cookie, const char *buf, size_t count)
+{
+  printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
+	  (unsigned long int) cookie);
+  if (cookie != THE_COOKIE)
+    ++errors;
+  cookiewrite_called = 1;
+  return 43;
+}
+
+
+static int cookieseek_called;
+static int
+cookieseek (void *cookie, off_t offset, int whence)
+{
+  printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
+	  (unsigned long int) cookie);
+  if (cookie != THE_COOKIE)
+    ++errors;
+  cookieseek_called = 1;
+  return 44;
+}
+
+
+static int cookieclose_called;
+static int
+cookieclose (void *cookie)
+{
+  printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
+	  (unsigned long int) cookie);
+  if (cookie != THE_COOKIE)
+    ++errors;
+  cookieclose_called = 1;
+  return 45;
+}
+
+
+int
+main (void)
+{
+  cookie_io_functions_t fcts;
+  char buf[1];
+  FILE *f;
+
+  fcts.read = cookieread;
+  fcts.seek = cookieseek;
+  fcts.close = cookieclose;
+  fcts.write = cookiewrite;
+
+  f = fopencookie (THE_COOKIE, "r+", fcts);
+
+  fread (buf, 1, 1, f);
+  fwrite (buf, 1, 1, f);
+  fseek (f, 0, SEEK_CUR);
+  fclose (f);
+
+  if (cookieread_called == 0
+      || cookiewrite_called == 0
+      || cookieseek_called == 0
+      || cookieclose_called == 0)
+    ++errors;
+
+  return errors != 0;
+}