[igt-dev] [PATCH i-g-t v2 2/3] tests/i915/gem_mmap: Add invalid parameters tests

[Antonio Argenziano]

Add a couple of tests that supply invalid parameters to the mmap IOCTL.

v2:
	- Expand test space. (Chris)

Signed-off-by: Antonio Argenziano <antonio.argenziano at intel.com>
---
 tests/i915/gem_mmap.c | 78 +++++++++++++++++++++++++++++++++++++++----
 1 file changed, 72 insertions(+), 6 deletions(-)

diff --git a/tests/i915/gem_mmap.c b/tests/i915/gem_mmap.c
index 0ed15878..f6229cc5 100644
--- a/tests/i915/gem_mmap.c
+++ b/tests/i915/gem_mmap.c
@@ -35,6 +35,7 @@
 #include <errno.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
+//#include <linux/bitops.h>
 #include "drm.h"
 
 #define OBJECT_SIZE 16384
@@ -128,12 +129,77 @@ igt_main
 		fd = drm_open_driver(DRIVER_INTEL);
 
 	igt_subtest("bad-object") {
-		memset(&arg, 0, sizeof(arg));
-		arg.handle = 0x10101010;
-		arg.offset = 0;
-		arg.size = 4096;
-		ret = ioctl(fd, DRM_IOCTL_I915_GEM_MMAP, &arg);
-		igt_assert(ret == -1 && errno == ENOENT);
+		uint32_t real_handle = gem_create(fd, 4096);
+		uint32_t handles[20];
+		int i = 0;
+
+		handles[i++] = 0xdeadbeef;
+		for(int bit = 0; bit < 16; bit++)
+			handles[i++] = real_handle | (1 << (bit + 16));
+		handles[i] = real_handle + 1;
+
+		for (; i < 0; i--) {
+			memset(&arg, 0, sizeof(arg));
+			arg.handle = handles[i];
+			arg.offset = 0;
+			arg.size = 4096;
+
+			igt_debug("Trying MMAP IOCTL with handle %x\n", handles[i]);
+			ret = ioctl(fd, DRM_IOCTL_I915_GEM_MMAP, &arg);
+
+			igt_assert_eq(errno, EINVAL);
+			igt_assert_eq(ret, -1);
+		}
+	}
+
+	igt_subtest("bad-offset") {
+		struct bad_offset {
+			uint64_t size;
+			uint64_t offset;
+		} bad_offsets[] = {
+				{4096, 4096 + 1},
+				{4096, -4096},
+				{ 2 * 4096, -4096},
+				{ 4096, ~0},
+				{}
+		};
+
+		for (int i = 0; i < ARRAY_SIZE(bad_offsets); i++) {
+			memset(&arg, 0, sizeof(arg));
+			arg.handle = gem_create(fd, 4096);
+			arg.offset = bad_offsets[i].offset;
+			arg.size = bad_offsets[i].size;
+
+			igt_debug("Trying to mmap bad offset; size: %llu, offset: %llu\n",
+					bad_offsets[i].size, bad_offsets[i].offset);
+
+			ret = ioctl(fd, DRM_IOCTL_I915_GEM_MMAP, &arg);
+			igt_assert_eq(errno, EINVAL);
+			igt_assert_eq(ret, -1);
+		}
+	}
+
+	igt_subtest("bad-size") {
+		uint64_t bad_size[] = {
+			0,
+			-4096,
+			4096 + 1,
+			2 * 4096,
+			~0,
+		};
+
+		for (int i = 0; i < ARRAY_SIZE(bad_size); i++) {
+			memset(&arg, 0, sizeof(arg));
+			arg.handle = gem_create(fd, 4096);
+			arg.offset = 4096;
+			arg.size = bad_size[i];
+
+			igt_debug("Trying to mmap bad size; size: %llu\n", bad_size[i]);
+			ret = ioctl(fd, DRM_IOCTL_I915_GEM_MMAP, &arg);
+
+			igt_assert_eq(errno, EINVAL);
+			igt_assert_eq(ret, -1);
+		}
 	}
 
 	igt_subtest("basic") {
-- 
2.20.1