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[3/5] Add PROT_NONE to the mprotect test.

Message ID 1378818692-24952-4-git-send-email-steve.capper@linaro.org
State New
Headers show

Commit Message

Steve Capper Sept. 10, 2013, 1:11 p.m. UTC 
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.capper@linaro.org>
---
 tests/mprotect.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

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();
 }