1 files changed, 25 insertions, 0 deletions
diff --git a/src/tests/userprog/write-boundary.c b/src/tests/userprog/write-boundary.c
new file mode 100644
index 0000000..d2de1d4
--- /dev/null
+++ b/src/tests/userprog/write-boundary.c
@@ -0,0 +1,25 @@
+/* Writes data spanning two pages in virtual address space,
+   which must succeed. */
+
+#include <string.h>
+#include <syscall.h>
+#include "tests/userprog/boundary.h"
+#include "tests/userprog/sample.inc"
+#include "tests/lib.h"
+#include "tests/main.h"
+
+void
+test_main (void) 
+{
+  int handle;
+  int byte_cnt;
+  char *sample_p;
+
+  sample_p = copy_string_across_boundary (sample);
+
+  CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
+
+  byte_cnt = write (handle, sample_p, sizeof sample - 1);
+  if (byte_cnt != sizeof sample - 1)
+    fail ("write() returned %d instead of %zu", byte_cnt, sizeof sample - 1);
+}