The mprotect unit test checks PROT_READ and PROT_READ | PROT_WRITE
protections. We recently found that PROT_NONE wasn't properly
supported in an early version of our huge page kernel code.
This patch adds PROT_NONE tests to mprotect. The expected behaviour
is that neither reads nor writes should succeed.
Signed-off-by: Steve Capper <steve.cap...@linaro.org>
---
tests/mprotect.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tests/mprotect.c b/tests/mprotect.c
index aa4673e..db6a662 100644
--- a/tests/mprotect.c
+++ b/tests/mprotect.c
@@ -213,5 +213,11 @@ int main(int argc, char *argv[])
test_mprotect(fd, "RW->R 1/2", 2*hpage_size, PROT_READ|PROT_WRITE,
hpage_size, PROT_READ);
+ /* PROT_NONE tests */
+ test_mprotect(fd, "NONE->R", hpage_size, PROT_NONE,
+ hpage_size, PROT_READ);
+ test_mprotect(fd, "NONE->RW", hpage_size, PROT_NONE,
+ hpage_size, PROT_READ|PROT_WRITE);
+
PASS();
}
--
1.8.1.4
------------------------------------------------------------------------------
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