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src/tests/vm/mmap-close.c

+/* Verifies that memory mappings persist after file close. */
+
+#include <string.h>
+#include <syscall.h>
+#include "tests/vm/sample.inc"
+#include "tests/arc4.h"
+#include "tests/lib.h"
+#include "tests/main.h"
+
+#define ACTUAL ((void *) 0x10000000)
+
+void
+test_main (void)
+{
+  int handle;
+  mapid_t map;
+
+  CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
+  CHECK ((map = mmap (handle, ACTUAL)) != MAP_FAILED, "mmap \"sample.txt\"");
+
+  close (handle);
+
+  if (memcmp (ACTUAL, sample, strlen (sample)))
+    fail ("read of mmap'd file reported bad data");
+
+  munmap (map);
+}