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Message-Id: <20210812220344.83778-1-jarkko@kernel.org>
Date: Fri, 13 Aug 2021 01:03:44 +0300
From: Jarkko Sakkinen <jarkko@...nel.org>
To: linux-sgx@...r.kernel.org
Cc: Reinette Chatre <reinette.chatre@...el.com>,
Borislav Petkov <bp@...en8.de>,
Jarkko Sakkinen <jarkko@...nel.org>,
Dave Hansen <dave.hansen@...ux.intel.com>,
Shuah Khan <shuah@...nel.org>, linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] selftests/sgx: Provide per-op parameter structs for the test enclave
To add more operations to the test enclave, the protocol needs to allow
to have operations with varying parameters. Create a separate parameter
struct for each existing operation, with the shared parameters in struct
encl_op_header.
Signed-off-by: Jarkko Sakkinen <jarkko@...nel.org>
---
tools/testing/selftests/sgx/defines.h | 13 ++++++-
tools/testing/selftests/sgx/main.c | 52 +++++++++++++------------
tools/testing/selftests/sgx/test_encl.c | 20 ++++++++--
3 files changed, 56 insertions(+), 29 deletions(-)
diff --git a/tools/testing/selftests/sgx/defines.h b/tools/testing/selftests/sgx/defines.h
index f88562afcaa0..4c7274e4d1d5 100644
--- a/tools/testing/selftests/sgx/defines.h
+++ b/tools/testing/selftests/sgx/defines.h
@@ -23,9 +23,18 @@ enum encl_op_type {
ENCL_OP_GET,
};
-struct encl_op {
+struct encl_op_header {
uint64_t type;
- uint64_t buffer;
+};
+
+struct encl_op_put {
+ struct encl_op_header header;
+ uint64_t value;
+};
+
+struct encl_op_get {
+ struct encl_op_header header;
+ uint64_t value;
};
#endif /* DEFINES_H */
diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c
index e252015e0c15..5c1625fa49de 100644
--- a/tools/testing/selftests/sgx/main.c
+++ b/tools/testing/selftests/sgx/main.c
@@ -215,46 +215,49 @@ FIXTURE_TEARDOWN(enclave)
TEST_F(enclave, unclobbered_vdso)
{
- struct encl_op op;
+ struct encl_op_put put_op;
+ struct encl_op_get get_op;
- op.type = ENCL_OP_PUT;
- op.buffer = MAGIC;
+ put_op.header.type = ENCL_OP_PUT;
+ put_op.value = MAGIC;
- EXPECT_EQ(ENCL_CALL(&op, &self->run, false), 0);
+ EXPECT_EQ(ENCL_CALL(&put_op, &self->run, false), 0);
EXPECT_EEXIT(&self->run);
EXPECT_EQ(self->run.user_data, 0);
- op.type = ENCL_OP_GET;
- op.buffer = 0;
+ get_op.header.type = ENCL_OP_GET;
+ get_op.value = 0;
- EXPECT_EQ(ENCL_CALL(&op, &self->run, false), 0);
+ EXPECT_EQ(ENCL_CALL(&get_op, &self->run, false), 0);
- EXPECT_EQ(op.buffer, MAGIC);
+ EXPECT_EQ(get_op.value, MAGIC);
EXPECT_EEXIT(&self->run);
EXPECT_EQ(self->run.user_data, 0);
}
TEST_F(enclave, clobbered_vdso)
{
- struct encl_op op;
+ struct encl_op_put put_op;
+ struct encl_op_get get_op;
- op.type = ENCL_OP_PUT;
- op.buffer = MAGIC;
+ put_op.header.type = ENCL_OP_PUT;
+ put_op.value = MAGIC;
- EXPECT_EQ(ENCL_CALL(&op, &self->run, true), 0);
+ EXPECT_EQ(ENCL_CALL(&put_op, &self->run, true), 0);
EXPECT_EEXIT(&self->run);
EXPECT_EQ(self->run.user_data, 0);
- op.type = ENCL_OP_GET;
- op.buffer = 0;
+ get_op.header.type = ENCL_OP_GET;
+ get_op.value = 0;
- EXPECT_EQ(ENCL_CALL(&op, &self->run, true), 0);
+ EXPECT_EQ(ENCL_CALL(&get_op, &self->run, true), 0);
- EXPECT_EQ(op.buffer, MAGIC);
+ EXPECT_EQ(get_op.value, MAGIC);
EXPECT_EEXIT(&self->run);
EXPECT_EQ(self->run.user_data, 0);
+
}
static int test_handler(long rdi, long rsi, long rdx, long ursp, long r8, long r9,
@@ -267,25 +270,26 @@ static int test_handler(long rdi, long rsi, long rdx, long ursp, long r8, long r
TEST_F(enclave, clobbered_vdso_and_user_function)
{
- struct encl_op op;
+ struct encl_op_put put_op;
+ struct encl_op_get get_op;
self->run.user_handler = (__u64)test_handler;
self->run.user_data = 0xdeadbeef;
- op.type = ENCL_OP_PUT;
- op.buffer = MAGIC;
+ put_op.header.type = ENCL_OP_PUT;
+ put_op.value = MAGIC;
- EXPECT_EQ(ENCL_CALL(&op, &self->run, true), 0);
+ EXPECT_EQ(ENCL_CALL(&put_op, &self->run, true), 0);
EXPECT_EEXIT(&self->run);
EXPECT_EQ(self->run.user_data, 0);
- op.type = ENCL_OP_GET;
- op.buffer = 0;
+ get_op.header.type = ENCL_OP_GET;
+ get_op.value = 0;
- EXPECT_EQ(ENCL_CALL(&op, &self->run, true), 0);
+ EXPECT_EQ(ENCL_CALL(&get_op, &self->run, true), 0);
- EXPECT_EQ(op.buffer, MAGIC);
+ EXPECT_EQ(get_op.value, MAGIC);
EXPECT_EEXIT(&self->run);
EXPECT_EQ(self->run.user_data, 0);
}
diff --git a/tools/testing/selftests/sgx/test_encl.c b/tools/testing/selftests/sgx/test_encl.c
index 734ea52f9924..b5fab52f0e1c 100644
--- a/tools/testing/selftests/sgx/test_encl.c
+++ b/tools/testing/selftests/sgx/test_encl.c
@@ -16,17 +16,31 @@ static void *memcpy(void *dest, const void *src, size_t n)
return dest;
}
+void do_encl_op_put(void *op)
+{
+ struct encl_op_put *op2 = op;
+
+ memcpy(&encl_buffer[0], &op2->value, 8);
+}
+
+void do_encl_op_get(void *op)
+{
+ struct encl_op_get *op2 = op;
+
+ memcpy(&op2->value, &encl_buffer[0], 8);
+}
+
void encl_body(void *rdi, void *rsi)
{
- struct encl_op *op = (struct encl_op *)rdi;
+ struct encl_op_header *op = (struct encl_op_header *)rdi;
switch (op->type) {
case ENCL_OP_PUT:
- memcpy(&encl_buffer[0], &op->buffer, 8);
+ do_encl_op_put(op);
break;
case ENCL_OP_GET:
- memcpy(&op->buffer, &encl_buffer[0], 8);
+ do_encl_op_get(op);
break;
default:
--
2.32.0
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