Initial commit

1 files changed, 32 insertions, 0 deletions

diff --git a/src/tests/vm/mmap-write.c b/src/tests/vm/mmap-write.c
new file mode 100644
index 0000000..46e8043
--- /dev/null
+++ b/src/tests/vm/mmap-write.c
@@ -0,0 +1,32 @@
+/* Writes to a file through a mapping, and unmaps the file,
+   then reads the data in the file back using the read system
+   call to verify. */
+
+#include <string.h>
+#include <syscall.h>
+#include "tests/vm/sample.inc"
+#include "tests/lib.h"
+#include "tests/main.h"
+
+#define ACTUAL ((void *) 0x10000000)
+
+void
+test_main (void)
+{
+  int handle;
+  mapid_t map;
+  char buf[1024];
+
+  /* Write file via mmap. */
+  CHECK (create ("sample.txt", strlen (sample)), "create \"sample.txt\"");
+  CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
+  CHECK ((map = mmap (handle, ACTUAL)) != MAP_FAILED, "mmap \"sample.txt\"");
+  memcpy (ACTUAL, sample, strlen (sample));
+  munmap (map);
+
+  /* Read back via read(). */
+  read (handle, buf, strlen (sample));
+  CHECK (!memcmp (buf, sample, strlen (sample)),
+         "compare read data against written data");
+  close (handle);
+}