From 4f670845ff9ab6c48bcb5f7bf4d4ef6dc3c3064b Mon Sep 17 00:00:00 2001 From: manuel Date: Tue, 27 Mar 2012 11:51:08 +0200 Subject: reorganize file structure to match the upstream requirements --- tests/vm/mmap-overlap.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 tests/vm/mmap-overlap.c (limited to 'tests/vm/mmap-overlap.c') diff --git a/tests/vm/mmap-overlap.c b/tests/vm/mmap-overlap.c new file mode 100644 index 0000000..668ae5f --- /dev/null +++ b/tests/vm/mmap-overlap.c @@ -0,0 +1,20 @@ +/* Verifies that overlapping memory mappings are disallowed. */ + +#include +#include "tests/vm/sample.inc" +#include "tests/lib.h" +#include "tests/main.h" + +void +test_main (void) +{ + char *start = (char *) 0x10000000; + int fd[2]; + + CHECK ((fd[0] = open ("zeros")) > 1, "open \"zeros\" once"); + CHECK (mmap (fd[0], start) != MAP_FAILED, "mmap \"zeros\""); + CHECK ((fd[1] = open ("zeros")) > 1 && fd[0] != fd[1], + "open \"zeros\" again"); + CHECK (mmap (fd[1], start + 4096) == MAP_FAILED, + "try to mmap \"zeros\" again"); +} -- cgit v1.2.3