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Unified Diff: util/mach/exc_server_variants_test.cc

Issue 755313004: Pass Mach message trailers to server handler functions (Closed) Base URL: https://chromium.googlesource.com/crashpad/crashpad@master
Patch Set: Use REQUESTED_TRAILER_SIZE() Created 6 years, 1 month ago
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Index: util/mach/exc_server_variants_test.cc
diff --git a/util/mach/exc_server_variants_test.cc b/util/mach/exc_server_variants_test.cc
index 4c9a7964b853c88f3d3e19e2c5ac65a286d3e9dd..b3df9e93922b71d6e9d316a869a6f37fc843cba2 100644
--- a/util/mach/exc_server_variants_test.cc
+++ b/util/mach/exc_server_variants_test.cc
@@ -82,7 +82,7 @@ struct __attribute__((packed, aligned(4))) ExceptionRaiseRequest {
Head.msgh_bits =
MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, MACH_MSG_TYPE_PORT_SEND) |
MACH_MSGH_BITS_COMPLEX;
- Head.msgh_size = sizeof(*this);
+ Head.msgh_size = sizeof(*this) - sizeof(trailer);
Head.msgh_remote_port = kClientRemotePort;
Head.msgh_local_port = kServerLocalPort;
Head.msgh_id = 2401;
@@ -104,6 +104,7 @@ struct __attribute__((packed, aligned(4))) ExceptionRaiseRequest {
exception_type_t exception;
mach_msg_type_number_t codeCnt;
integer_t code[2];
+ mach_msg_trailer_t trailer;
};
struct __attribute__((packed, aligned(4))) ExceptionRaiseReply {
@@ -149,7 +150,7 @@ struct __attribute__((packed, aligned(4))) ExceptionRaiseStateRequest {
memset(this, 0xa5, sizeof(*this));
Head.msgh_bits =
MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, MACH_MSG_TYPE_PORT_SEND);
- Head.msgh_size = sizeof(*this);
+ Head.msgh_size = sizeof(*this) - sizeof(trailer);
Head.msgh_remote_port = kClientRemotePort;
Head.msgh_local_port = kServerLocalPort;
Head.msgh_id = 2402;
@@ -166,6 +167,13 @@ struct __attribute__((packed, aligned(4))) ExceptionRaiseStateRequest {
Head.msgh_size += sizeof(old_state[0]) * old_stateCnt - sizeof(old_state);
}
+ // Because the message size has been adjusted, the trailer may not appear in
+ // its home member variable. This computes the actual address of the trailer.
+ const mach_msg_trailer_t* Trailer() const {
Robert Sesek 2014/12/01 20:51:39 Why not use the function defined in mach_message_u
+ return reinterpret_cast<mach_msg_trailer_t*>(
+ reinterpret_cast<uintptr_t>(this) + Head.msgh_size);
+ }
+
mach_msg_header_t Head;
NDR_record_t NDR;
exception_type_t exception;
@@ -174,6 +182,7 @@ struct __attribute__((packed, aligned(4))) ExceptionRaiseStateRequest {
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[THREAD_STATE_MAX];
+ mach_msg_trailer_t trailer;
};
struct __attribute__((packed, aligned(4))) ExceptionRaiseStateReply {
@@ -232,7 +241,7 @@ struct __attribute__((packed, aligned(4))) ExceptionRaiseStateIdentityRequest {
Head.msgh_bits =
MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, MACH_MSG_TYPE_PORT_SEND) |
MACH_MSGH_BITS_COMPLEX;
- Head.msgh_size = sizeof(*this);
+ Head.msgh_size = sizeof(*this) - sizeof(trailer);
Head.msgh_remote_port = kClientRemotePort;
Head.msgh_local_port = kServerLocalPort;
Head.msgh_id = 2403;
@@ -252,6 +261,13 @@ struct __attribute__((packed, aligned(4))) ExceptionRaiseStateIdentityRequest {
Head.msgh_size += sizeof(old_state[0]) * old_stateCnt - sizeof(old_state);
}
+ // Because the message size has been adjusted, the trailer may not appear in
+ // its home member variable. This computes the actual address of the trailer.
+ const mach_msg_trailer_t* Trailer() const {
+ return reinterpret_cast<mach_msg_trailer_t*>(
+ reinterpret_cast<uintptr_t>(this) + Head.msgh_size);
+ }
+
mach_msg_header_t Head;
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
@@ -263,6 +279,7 @@ struct __attribute__((packed, aligned(4))) ExceptionRaiseStateIdentityRequest {
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[THREAD_STATE_MAX];
+ mach_msg_trailer_t trailer;
};
// The reply messages for exception_raise_state and
@@ -275,7 +292,7 @@ struct __attribute__((packed, aligned(4))) MachExceptionRaiseRequest {
Head.msgh_bits =
MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, MACH_MSG_TYPE_PORT_SEND) |
MACH_MSGH_BITS_COMPLEX;
- Head.msgh_size = sizeof(*this);
+ Head.msgh_size = sizeof(*this) - sizeof(trailer);
Head.msgh_remote_port = kClientRemotePort;
Head.msgh_local_port = kServerLocalPort;
Head.msgh_id = 2405;
@@ -297,6 +314,7 @@ struct __attribute__((packed, aligned(4))) MachExceptionRaiseRequest {
exception_type_t exception;
mach_msg_type_number_t codeCnt;
int64_t code[2];
+ mach_msg_trailer_t trailer;
};
// The reply messages for exception_raise and mach_exception_raise are
@@ -308,7 +326,7 @@ struct __attribute__((packed, aligned(4))) MachExceptionRaiseStateRequest {
memset(this, 0xa5, sizeof(*this));
Head.msgh_bits =
MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, MACH_MSG_TYPE_PORT_SEND);
- Head.msgh_size = sizeof(*this);
+ Head.msgh_size = sizeof(*this) - sizeof(trailer);
Head.msgh_remote_port = kClientRemotePort;
Head.msgh_local_port = kServerLocalPort;
Head.msgh_id = 2406;
@@ -325,6 +343,13 @@ struct __attribute__((packed, aligned(4))) MachExceptionRaiseStateRequest {
Head.msgh_size += sizeof(old_state[0]) * old_stateCnt - sizeof(old_state);
}
+ // Because the message size has been adjusted, the trailer may not appear in
+ // its home member variable. This computes the actual address of the trailer.
+ const mach_msg_trailer_t* Trailer() const {
+ return reinterpret_cast<mach_msg_trailer_t*>(
+ reinterpret_cast<uintptr_t>(this) + Head.msgh_size);
+ }
+
mach_msg_header_t Head;
NDR_record_t NDR;
exception_type_t exception;
@@ -333,6 +358,7 @@ struct __attribute__((packed, aligned(4))) MachExceptionRaiseStateRequest {
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[THREAD_STATE_MAX];
+ mach_msg_trailer_t trailer;
};
// The reply messages for exception_raise_state and mach_exception_raise_state
@@ -346,7 +372,7 @@ struct __attribute__((packed,
Head.msgh_bits =
MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, MACH_MSG_TYPE_PORT_SEND) |
MACH_MSGH_BITS_COMPLEX;
- Head.msgh_size = sizeof(*this);
+ Head.msgh_size = sizeof(*this) - sizeof(trailer);
Head.msgh_remote_port = kClientRemotePort;
Head.msgh_local_port = kServerLocalPort;
Head.msgh_id = 2407;
@@ -366,6 +392,13 @@ struct __attribute__((packed,
Head.msgh_size += sizeof(old_state[0]) * old_stateCnt - sizeof(old_state);
}
+ // Because the message size has been adjusted, the trailer may not appear in
+ // its home member variable. This computes the actual address of the trailer.
+ const mach_msg_trailer_t* Trailer() const {
+ return reinterpret_cast<mach_msg_trailer_t*>(
+ reinterpret_cast<uintptr_t>(this) + Head.msgh_size);
+ }
+
mach_msg_header_t Head;
mach_msg_body_t msgh_body;
mach_msg_port_descriptor_t thread;
@@ -377,6 +410,7 @@ struct __attribute__((packed,
int flavor;
mach_msg_type_number_t old_stateCnt;
natural_t old_state[THREAD_STATE_MAX];
+ mach_msg_trailer_t trailer;
};
// The reply messages for exception_raise_state_identity and
@@ -449,6 +483,7 @@ class MockUniversalMachExcServer : public UniversalMachExcServer {
mach_msg_type_number_t old_state_count,
thread_state_t new_state,
mach_msg_type_number_t* new_state_count,
+ const mach_msg_trailer_t* trailer,
bool* destroy_complex_request) override {
*destroy_complex_request = true;
const ConstExceptionCodes exception_codes = {code, code_count};
@@ -462,19 +497,21 @@ class MockUniversalMachExcServer : public UniversalMachExcServer {
&exception_codes,
flavor,
&old_thread_state,
- &new_thread_state);
+ &new_thread_state,
+ trailer);
}
- MOCK_METHOD9(MockCatchMachException,
- kern_return_t(exception_behavior_t behavior,
- exception_handler_t exception_port,
- thread_t thread,
- task_t task,
- exception_type_t exception,
- const ConstExceptionCodes* exception_codes,
- thread_state_flavor_t* flavor,
- const ConstThreadState* old_thread_state,
- ThreadState* new_thread_state));
+ MOCK_METHOD10(MockCatchMachException,
+ kern_return_t(exception_behavior_t behavior,
+ exception_handler_t exception_port,
+ thread_t thread,
+ task_t task,
+ exception_type_t exception,
+ const ConstExceptionCodes* exception_codes,
+ thread_state_flavor_t* flavor,
+ const ConstThreadState* old_thread_state,
+ ThreadState* new_thread_state,
+ const mach_msg_trailer_t* trailer));
};
// Matcher for ConstExceptionCodes, testing that it carries 2 codes matching
@@ -548,7 +585,7 @@ TEST(ExcServerVariants, MockExceptionRaise) {
MockUniversalMachExcServer server;
ExceptionRaiseRequest request;
- EXPECT_LE(sizeof(request), server.MachMessageServerRequestSize());
+ EXPECT_LE(request.Head.msgh_size, server.MachMessageServerRequestSize());
ExceptionRaiseReply reply;
EXPECT_LE(sizeof(reply), server.MachMessageServerReplySize());
@@ -565,7 +602,8 @@ TEST(ExcServerVariants, MockExceptionRaise) {
kTestExceptonCodes[1]),
Pointee(Eq(THREAD_STATE_NONE)),
IsThreadStateCount(0u),
- IsThreadStateCount(0u)))
+ IsThreadStateCount(0u),
+ Eq(&request.trailer)))
.WillOnce(Return(KERN_SUCCESS))
.RetiresOnSaturation();
@@ -585,7 +623,7 @@ TEST(ExcServerVariants, MockExceptionRaiseState) {
MockUniversalMachExcServer server;
ExceptionRaiseStateRequest request;
- EXPECT_LE(sizeof(request), server.MachMessageServerRequestSize());
+ EXPECT_LE(request.Head.msgh_size, server.MachMessageServerRequestSize());
ExceptionRaiseStateReply reply;
EXPECT_LE(sizeof(reply), server.MachMessageServerReplySize());
@@ -603,7 +641,8 @@ TEST(ExcServerVariants, MockExceptionRaiseState) {
AreExceptionCodes(kTestExceptonCodes[0], kTestExceptonCodes[1]),
Pointee(Eq(kThreadStateFlavor)),
IsThreadStateCount(kThreadStateFlavorCount),
- IsThreadStateCount(arraysize(reply.new_state))))
+ IsThreadStateCount(arraysize(reply.new_state)),
+ Eq(request.Trailer())))
.WillOnce(Return(KERN_SUCCESS))
.RetiresOnSaturation();
@@ -626,7 +665,7 @@ TEST(ExcServerVariants, MockExceptionRaiseStateIdentity) {
MockUniversalMachExcServer server;
ExceptionRaiseStateIdentityRequest request;
- EXPECT_LE(sizeof(request), server.MachMessageServerRequestSize());
+ EXPECT_LE(request.Head.msgh_size, server.MachMessageServerRequestSize());
ExceptionRaiseStateIdentityReply reply;
EXPECT_LE(sizeof(reply), server.MachMessageServerReplySize());
@@ -644,7 +683,8 @@ TEST(ExcServerVariants, MockExceptionRaiseStateIdentity) {
AreExceptionCodes(kTestExceptonCodes[0], kTestExceptonCodes[1]),
Pointee(Eq(kThreadStateFlavor)),
IsThreadStateCount(kThreadStateFlavorCount),
- IsThreadStateCount(arraysize(reply.new_state))))
+ IsThreadStateCount(arraysize(reply.new_state)),
+ Eq(request.Trailer())))
.WillOnce(Return(KERN_SUCCESS))
.RetiresOnSaturation();
@@ -664,7 +704,7 @@ TEST(ExcServerVariants, MockMachExceptionRaise) {
MockUniversalMachExcServer server;
MachExceptionRaiseRequest request;
- EXPECT_LE(sizeof(request), server.MachMessageServerRequestSize());
+ EXPECT_LE(request.Head.msgh_size, server.MachMessageServerRequestSize());
MachExceptionRaiseReply reply;
EXPECT_LE(sizeof(reply), server.MachMessageServerReplySize());
@@ -683,7 +723,8 @@ TEST(ExcServerVariants, MockMachExceptionRaise) {
kTestMachExceptionCodes[1]),
Pointee(Eq(THREAD_STATE_NONE)),
IsThreadStateCount(0u),
- IsThreadStateCount(0u)))
+ IsThreadStateCount(0u),
+ Eq(&request.trailer)))
.WillOnce(Return(KERN_SUCCESS))
.RetiresOnSaturation();
@@ -703,7 +744,7 @@ TEST(ExcServerVariants, MockMachExceptionRaiseState) {
MockUniversalMachExcServer server;
MachExceptionRaiseStateRequest request;
- EXPECT_LE(sizeof(request), server.MachMessageServerRequestSize());
+ EXPECT_LE(request.Head.msgh_size, server.MachMessageServerRequestSize());
MachExceptionRaiseStateReply reply;
EXPECT_LE(sizeof(reply), server.MachMessageServerReplySize());
@@ -722,7 +763,8 @@ TEST(ExcServerVariants, MockMachExceptionRaiseState) {
kTestMachExceptionCodes[1]),
Pointee(Eq(kThreadStateFlavor)),
IsThreadStateCount(kThreadStateFlavorCount),
- IsThreadStateCount(arraysize(reply.new_state))))
+ IsThreadStateCount(arraysize(reply.new_state)),
+ Eq(request.Trailer())))
.WillOnce(Return(KERN_SUCCESS))
.RetiresOnSaturation();
@@ -745,7 +787,7 @@ TEST(ExcServerVariants, MockMachExceptionRaiseStateIdentity) {
MockUniversalMachExcServer server;
MachExceptionRaiseStateIdentityRequest request;
- EXPECT_LE(sizeof(request), server.MachMessageServerRequestSize());
+ EXPECT_LE(request.Head.msgh_size, server.MachMessageServerRequestSize());
MachExceptionRaiseStateIdentityReply reply;
EXPECT_LE(sizeof(reply), server.MachMessageServerReplySize());
@@ -764,7 +806,8 @@ TEST(ExcServerVariants, MockMachExceptionRaiseStateIdentity) {
kTestMachExceptionCodes[1]),
Pointee(Eq(kThreadStateFlavor)),
IsThreadStateCount(kThreadStateFlavorCount),
- IsThreadStateCount(arraysize(reply.new_state))))
+ IsThreadStateCount(arraysize(reply.new_state)),
+ Eq(request.Trailer())))
.WillOnce(Return(KERN_SUCCESS))
.RetiresOnSaturation();
@@ -871,6 +914,7 @@ class TestExcServerVariants : public UniversalMachExcServer,
mach_msg_type_number_t old_state_count,
thread_state_t new_state,
mach_msg_type_number_t* new_state_count,
+ const mach_msg_trailer_t* trailer,
bool* destroy_complex_request) override {
*destroy_complex_request = true;
@@ -917,6 +961,11 @@ class TestExcServerVariants : public UniversalMachExcServer,
EXPECT_EQ(nullptr, new_state);
}
+ EXPECT_EQ(implicit_cast<mach_msg_trailer_type_t>(MACH_MSG_TRAILER_FORMAT_0),
+ trailer->msgh_trailer_type);
+ EXPECT_EQ(REQUESTED_TRAILER_SIZE(kMachMessageOptions),
+ trailer->msgh_trailer_size);
+
return ExcServerSuccessfulReturnValue(behavior, false);
}
@@ -927,7 +976,7 @@ class TestExcServerVariants : public UniversalMachExcServer,
kern_return_t kr =
MachMessageServer::Run(this,
LocalPort(),
- MACH_MSG_OPTION_NONE,
+ kMachMessageOptions,
MachMessageServer::kOneShot,
MachMessageServer::kBlocking,
MachMessageServer::kReceiveLargeError,
@@ -954,6 +1003,9 @@ class TestExcServerVariants : public UniversalMachExcServer,
mach_msg_type_number_t state_count_;
bool handled_;
+ static const mach_msg_option_t kMachMessageOptions =
+ MACH_RCV_TRAILER_TYPE(MACH_MSG_TRAILER_FORMAT_0);
+
DISALLOW_COPY_AND_ASSIGN(TestExcServerVariants);
};
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