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Commit 862fe029 authored by Christopher Ferris's avatar Christopher Ferris
Browse files

Change the 64 bit map address format. 

Previously, the map printing in tombstones for 64 bit devices uses
a variable length value. This means that the maps are not lined up.
The new format is to print the map as 00000000'00000000 in all ways.

Also fix a bug where the backtrace_map_t did not initialize all
parameters.

Add unit tests for all of the dump_all_maps function.

Bug: 20950813
Change-Id: I30901c8a0251b00d85c4c01476b033ef8db84e32
parent dd50edcb

debuggerd/Android.mk

+31 −22
Original line number Diff line number Diff line
@@ -75,46 +75,55 @@ LOCAL_MULTILIB := both 


include $(BUILD_EXECUTABLE)



include $(CLEAR_VARS)



LOCAL_SRC_FILES := \

debuggerd_test_src_files := \

    utility.cpp \

    test/dump_maps_test.cpp \

    test/dump_memory_test.cpp \

    test/elf_fake.cpp \

    test/log_fake.cpp \

    test/property_fake.cpp \

    test/ptrace_fake.cpp \

    test/selinux_fake.cpp \



LOCAL_MODULE := debuggerd_test



LOCAL_SHARED_LIBRARIES := \

debuggerd_shared_libraries := \

    libbacktrace \

    libbase \

    libcutils \



LOCAL_C_INCLUDES += $(LOCAL_PATH)/test

LOCAL_CPPFLAGS := $(common_cppflags)

debuggerd_c_includes := \

    $(LOCAL_PATH)/test \



debuggerd_cpp_flags := \

    $(common_cppflags) \

    -Wno-missing-field-initializers \



# Only build the host tests on linux.

ifeq ($(HOST_OS),linux)



include $(CLEAR_VARS)



LOCAL_MODULE := debuggerd_test

LOCAL_SRC_FILES := $(debuggerd_test_src_files)

LOCAL_SHARED_LIBRARIES := $(debuggerd_shared_libraries)

LOCAL_C_INCLUDES := $(debuggerd_c_includes)

LOCAL_CPPFLAGS := $(debuggerd_cpp_flags)



LOCAL_MODULE_STEM_32 := $(LOCAL_MODULE)32

LOCAL_MODULE_STEM_64 := $(LOCAL_MODULE)64

LOCAL_MULTILIB := both



include $(BUILD_HOST_NATIVE_TEST)



include $(CLEAR_VARS)

endif



LOCAL_SRC_FILES := \

    utility.cpp \

    test/dump_memory_test.cpp \

    test/log_fake.cpp \

include $(CLEAR_VARS)



LOCAL_MODULE := debuggerd_test



LOCAL_SHARED_LIBRARIES := \

    libbacktrace \

    libbase \



LOCAL_C_INCLUDES += $(LOCAL_PATH)/test

LOCAL_CPPFLAGS := $(common_cppflags)

LOCAL_SRC_FILES := $(debuggerd_test_src_files)

LOCAL_SHARED_LIBRARIES := $(debuggerd_shared_libraries)

LOCAL_C_INCLUDES := $(debuggerd_c_includes)

LOCAL_CPPFLAGS := $(debuggerd_cpp_flags)



LOCAL_MODULE_STEM_32 := $(LOCAL_MODULE)32

LOCAL_MODULE_STEM_64 := $(LOCAL_MODULE)64

LOCAL_MULTILIB := both



include $(BUILD_NATIVE_TEST)

debuggerd/test/BacktraceMock.h

+4 −0
Original line number Diff line number Diff line
@@ -32,6 +32,10 @@ class BacktraceMapMock : public BacktraceMap { 
 public:

  BacktraceMapMock() : BacktraceMap(0) {}

  virtual ~BacktraceMapMock() {}



  void AddMap(backtrace_map_t& map) {

    maps_.push_back(map);

  }

};

debuggerd/test/dump_maps_test.cpp

0 → 100644
+571 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2015 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#include <stdlib.h>



#include <memory>

#include <string>



#include <gtest/gtest.h>

#include <base/file.h>



#include "utility.h"



#include "BacktraceMock.h"

#include "elf_fake.h"

#include "host_signal_fixup.h"

#include "log_fake.h"

#include "ptrace_fake.h"



// In order to test this code, we need to include the tombstone.cpp code.

// Including it, also allows us to override the ptrace function.

#define ptrace ptrace_fake



#include "tombstone.cpp"



void dump_registers(log_t*, pid_t) {

}



void dump_memory_and_code(log_t*, Backtrace*) {

}



void dump_backtrace_to_log(Backtrace*, log_t*, char const*) {

}



class DumpMapsTest : public ::testing::Test {

 protected:

  virtual void SetUp() {

    map_mock_.reset(new BacktraceMapMock());

    backtrace_mock_.reset(new BacktraceMock(map_mock_.get()));



    char tmp_file[256];

    const char data_template[] = "/data/local/tmp/debuggerd_memory_testXXXXXX";

    memcpy(tmp_file, data_template, sizeof(data_template));

    int tombstone_fd = mkstemp(tmp_file);

    if (tombstone_fd == -1) {

      const char tmp_template[] = "/tmp/debuggerd_memory_testXXXXXX";

      memcpy(tmp_file, tmp_template, sizeof(tmp_template));

      tombstone_fd = mkstemp(tmp_file);

      if (tombstone_fd == -1) {

        abort();

      }

    }

    if (unlink(tmp_file) == -1) {

      abort();

    }



    log_.tfd = tombstone_fd;

    log_.amfd = -1;

    log_.crashed_tid = 12;

    log_.current_tid = 12;

    log_.should_retrieve_logcat = false;



    resetLogs();

    elf_set_fake_build_id("");

    siginfo_t si;

    si.si_signo = SIGPIPE;

    ptrace_set_fake_getsiginfo(si);

  }



  virtual void TearDown() {

    if (log_.tfd >= 0) {

      close(log_.tfd);

    }

  }



  std::unique_ptr<BacktraceMapMock> map_mock_;

  std::unique_ptr<BacktraceMock> backtrace_mock_;



  log_t log_;

};



TEST_F(DumpMapsTest, single_map) {

  backtrace_map_t map;

#if defined(__LP64__)

  map.start = 0x123456789abcd000UL;

  map.end = 0x123456789abdf000UL;

#else

  map.start = 0x1234000;

  map.end = 0x1235000;

#endif

  map_mock_->AddMap(map);



  dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



  std::string tombstone_contents;

  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

  const char* expected_dump = \

"\nmemory map:\n"

#if defined(__LP64__)

"    12345678'9abcd000-12345678'9abdefff ---         0     12000\n";

#else

"    01234000-01234fff ---         0      1000\n";

#endif

  ASSERT_STREQ(expected_dump, tombstone_contents.c_str());



  // Verify that the log buf is empty, and no error messages.

  ASSERT_STREQ("", getFakeLogBuf().c_str());

  ASSERT_STREQ("", getFakeLogPrint().c_str());

}



TEST_F(DumpMapsTest, single_map_elf_build_id) {

  backtrace_map_t map;

#if defined(__LP64__)

  map.start = 0x123456789abcd000UL;

  map.end = 0x123456789abdf000UL;

#else

  map.start = 0x1234000;

  map.end = 0x1235000;

#endif

  map.flags = PROT_READ;

  map.name = "/system/lib/libfake.so";

  map_mock_->AddMap(map);



  elf_set_fake_build_id("abcdef1234567890abcdef1234567890");

  dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



  std::string tombstone_contents;

  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

  const char* expected_dump = \

"\nmemory map:\n"

#if defined(__LP64__)

"    12345678'9abcd000-12345678'9abdefff r--         0     12000  /system/lib/libfake.so (BuildId: abcdef1234567890abcdef1234567890)\n";

#else

"    01234000-01234fff r--         0      1000  /system/lib/libfake.so (BuildId: abcdef1234567890abcdef1234567890)\n";

#endif

  ASSERT_STREQ(expected_dump, tombstone_contents.c_str());



  // Verify that the log buf is empty, and no error messages.

  ASSERT_STREQ("", getFakeLogBuf().c_str());

  ASSERT_STREQ("", getFakeLogPrint().c_str());

}



// Even though build id is present, it should not be printed in either of

// these cases.

TEST_F(DumpMapsTest, single_map_no_build_id) {

  backtrace_map_t map;

#if defined(__LP64__)

  map.start = 0x123456789abcd000UL;

  map.end = 0x123456789abdf000UL;

#else

  map.start = 0x1234000;

  map.end = 0x1235000;

#endif

  map.flags = PROT_WRITE;

  map_mock_->AddMap(map);



  map.name = "/system/lib/libfake.so";

  map_mock_->AddMap(map);



  elf_set_fake_build_id("abcdef1234567890abcdef1234567890");

  dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



  std::string tombstone_contents;

  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

  const char* expected_dump = \

"\nmemory map:\n"

#if defined(__LP64__)

"    12345678'9abcd000-12345678'9abdefff -w-         0     12000\n"

"    12345678'9abcd000-12345678'9abdefff -w-         0     12000  /system/lib/libfake.so\n";

#else

"    01234000-01234fff -w-         0      1000\n"

"    01234000-01234fff -w-         0      1000  /system/lib/libfake.so\n";

#endif

  ASSERT_STREQ(expected_dump, tombstone_contents.c_str());



  // Verify that the log buf is empty, and no error messages.

  ASSERT_STREQ("", getFakeLogBuf().c_str());

  ASSERT_STREQ("", getFakeLogPrint().c_str());

}



TEST_F(DumpMapsTest, multiple_maps) {

  backtrace_map_t map;



  map.start = 0xa234000;

  map.end = 0xa235000;

  map_mock_->AddMap(map);



  map.start = 0xa334000;

  map.end = 0xa335000;

  map.offset = 0xf000;

  map.flags = PROT_READ;

  map_mock_->AddMap(map);



  map.start = 0xa434000;

  map.end = 0xa435000;

  map.offset = 0x1000;

  map.load_base = 0xd000;

  map.flags = PROT_WRITE;

  map_mock_->AddMap(map);



  map.start = 0xa534000;

  map.end = 0xa535000;

  map.offset = 0x3000;

  map.load_base = 0x2000;

  map.flags = PROT_EXEC;

  map_mock_->AddMap(map);



  map.start = 0xa634000;

  map.end = 0xa635000;

  map.offset = 0;

  map.load_base = 0;

  map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;

  map.name = "/system/lib/fake.so";

  map_mock_->AddMap(map);



  dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



  std::string tombstone_contents;

  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

  const char* expected_dump = \

"\nmemory map:\n"

#if defined(__LP64__)

"    00000000'0a234000-00000000'0a234fff ---         0      1000\n"

"    00000000'0a334000-00000000'0a334fff r--      f000      1000\n"

"    00000000'0a434000-00000000'0a434fff -w-      1000      1000  (load base 0xd000)\n"

"    00000000'0a534000-00000000'0a534fff --x      3000      1000  (load base 0x2000)\n"

"    00000000'0a634000-00000000'0a634fff rwx         0      1000  /system/lib/fake.so\n";

#else

"    0a234000-0a234fff ---         0      1000\n"

"    0a334000-0a334fff r--      f000      1000\n"

"    0a434000-0a434fff -w-      1000      1000  (load base 0xd000)\n"

"    0a534000-0a534fff --x      3000      1000  (load base 0x2000)\n"

"    0a634000-0a634fff rwx         0      1000  /system/lib/fake.so\n";

#endif

  ASSERT_STREQ(expected_dump, tombstone_contents.c_str());



  // Verify that the log buf is empty, and no error messages.

  ASSERT_STREQ("", getFakeLogBuf().c_str());

  ASSERT_STREQ("", getFakeLogPrint().c_str());

}



TEST_F(DumpMapsTest, multiple_maps_fault_address_before) {

  backtrace_map_t map;



  map.start = 0xa434000;

  map.end = 0xa435000;

  map.offset = 0x1000;

  map.load_base = 0xd000;

  map.flags = PROT_WRITE;

  map_mock_->AddMap(map);



  map.start = 0xa534000;

  map.end = 0xa535000;

  map.offset = 0x3000;

  map.load_base = 0x2000;

  map.flags = PROT_EXEC;

  map_mock_->AddMap(map);



  map.start = 0xa634000;

  map.end = 0xa635000;

  map.offset = 0;

  map.load_base = 0;

  map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;

  map.name = "/system/lib/fake.so";

  map_mock_->AddMap(map);



  siginfo_t si;

  si.si_signo = SIGBUS;

  si.si_addr = reinterpret_cast<void*>(0x1000);

  ptrace_set_fake_getsiginfo(si);

  dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



  std::string tombstone_contents;

  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

  const char* expected_dump = \

"\nmemory map: (fault address prefixed with --->)\n"

#if defined(__LP64__)

"--->Fault address falls at 00000000'00001000 before any mapped regions\n"

"    00000000'0a434000-00000000'0a434fff -w-      1000      1000  (load base 0xd000)\n"

"    00000000'0a534000-00000000'0a534fff --x      3000      1000  (load base 0x2000)\n"

"    00000000'0a634000-00000000'0a634fff rwx         0      1000  /system/lib/fake.so\n";

#else

"--->Fault address falls at 00001000 before any mapped regions\n"

"    0a434000-0a434fff -w-      1000      1000  (load base 0xd000)\n"

"    0a534000-0a534fff --x      3000      1000  (load base 0x2000)\n"

"    0a634000-0a634fff rwx         0      1000  /system/lib/fake.so\n";

#endif

  ASSERT_STREQ(expected_dump, tombstone_contents.c_str());



  // Verify that the log buf is empty, and no error messages.

  ASSERT_STREQ("", getFakeLogBuf().c_str());

  ASSERT_STREQ("", getFakeLogPrint().c_str());

}



TEST_F(DumpMapsTest, multiple_maps_fault_address_between) {

  backtrace_map_t map;



  map.start = 0xa434000;

  map.end = 0xa435000;

  map.offset = 0x1000;

  map.load_base = 0xd000;

  map.flags = PROT_WRITE;

  map_mock_->AddMap(map);



  map.start = 0xa534000;

  map.end = 0xa535000;

  map.offset = 0x3000;

  map.load_base = 0x2000;

  map.flags = PROT_EXEC;

  map_mock_->AddMap(map);



  map.start = 0xa634000;

  map.end = 0xa635000;

  map.offset = 0;

  map.load_base = 0;

  map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;

  map.name = "/system/lib/fake.so";

  map_mock_->AddMap(map);



  siginfo_t si;

  si.si_signo = SIGBUS;

  si.si_addr = reinterpret_cast<void*>(0xa533000);

  ptrace_set_fake_getsiginfo(si);

  dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



  std::string tombstone_contents;

  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

  const char* expected_dump = \

"\nmemory map: (fault address prefixed with --->)\n"

#if defined(__LP64__)

"    00000000'0a434000-00000000'0a434fff -w-      1000      1000  (load base 0xd000)\n"

"--->Fault address falls at 00000000'0a533000 between mapped regions\n"

"    00000000'0a534000-00000000'0a534fff --x      3000      1000  (load base 0x2000)\n"

"    00000000'0a634000-00000000'0a634fff rwx         0      1000  /system/lib/fake.so\n";

#else

"    0a434000-0a434fff -w-      1000      1000  (load base 0xd000)\n"

"--->Fault address falls at 0a533000 between mapped regions\n"

"    0a534000-0a534fff --x      3000      1000  (load base 0x2000)\n"

"    0a634000-0a634fff rwx         0      1000  /system/lib/fake.so\n";

#endif

  ASSERT_STREQ(expected_dump, tombstone_contents.c_str());



  // Verify that the log buf is empty, and no error messages.

  ASSERT_STREQ("", getFakeLogBuf().c_str());

  ASSERT_STREQ("", getFakeLogPrint().c_str());

}



TEST_F(DumpMapsTest, multiple_maps_fault_address_in_map) {

  backtrace_map_t map;



  map.start = 0xa434000;

  map.end = 0xa435000;

  map.offset = 0x1000;

  map.load_base = 0xd000;

  map.flags = PROT_WRITE;

  map_mock_->AddMap(map);



  map.start = 0xa534000;

  map.end = 0xa535000;

  map.offset = 0x3000;

  map.load_base = 0x2000;

  map.flags = PROT_EXEC;

  map_mock_->AddMap(map);



  map.start = 0xa634000;

  map.end = 0xa635000;

  map.offset = 0;

  map.load_base = 0;

  map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;

  map.name = "/system/lib/fake.so";

  map_mock_->AddMap(map);



  siginfo_t si;

  si.si_signo = SIGBUS;

  si.si_addr = reinterpret_cast<void*>(0xa534040);

  ptrace_set_fake_getsiginfo(si);

  dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



  std::string tombstone_contents;

  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

  const char* expected_dump = \

"\nmemory map: (fault address prefixed with --->)\n"

#if defined(__LP64__)

"    00000000'0a434000-00000000'0a434fff -w-      1000      1000  (load base 0xd000)\n"

"--->00000000'0a534000-00000000'0a534fff --x      3000      1000  (load base 0x2000)\n"

"    00000000'0a634000-00000000'0a634fff rwx         0      1000  /system/lib/fake.so\n";

#else

"    0a434000-0a434fff -w-      1000      1000  (load base 0xd000)\n"

"--->0a534000-0a534fff --x      3000      1000  (load base 0x2000)\n"

"    0a634000-0a634fff rwx         0      1000  /system/lib/fake.so\n";

#endif

  ASSERT_STREQ(expected_dump, tombstone_contents.c_str());



  // Verify that the log buf is empty, and no error messages.

  ASSERT_STREQ("", getFakeLogBuf().c_str());

  ASSERT_STREQ("", getFakeLogPrint().c_str());

}



TEST_F(DumpMapsTest, multiple_maps_fault_address_after) {

  backtrace_map_t map;



  map.start = 0xa434000;

  map.end = 0xa435000;

  map.offset = 0x1000;

  map.load_base = 0xd000;

  map.flags = PROT_WRITE;

  map_mock_->AddMap(map);



  map.start = 0xa534000;

  map.end = 0xa535000;

  map.offset = 0x3000;

  map.load_base = 0x2000;

  map.flags = PROT_EXEC;

  map_mock_->AddMap(map);



  map.start = 0xa634000;

  map.end = 0xa635000;

  map.offset = 0;

  map.load_base = 0;

  map.flags = PROT_READ | PROT_WRITE | PROT_EXEC;

  map.name = "/system/lib/fake.so";

  map_mock_->AddMap(map);



  siginfo_t si;

  si.si_signo = SIGBUS;

#if defined(__LP64__)

  si.si_addr = reinterpret_cast<void*>(0x12345a534040UL);

#else

  si.si_addr = reinterpret_cast<void*>(0xf534040UL);

#endif

  ptrace_set_fake_getsiginfo(si);

  dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



  std::string tombstone_contents;

  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

  const char* expected_dump = \

"\nmemory map: (fault address prefixed with --->)\n"

#if defined(__LP64__)

"    00000000'0a434000-00000000'0a434fff -w-      1000      1000  (load base 0xd000)\n"

"    00000000'0a534000-00000000'0a534fff --x      3000      1000  (load base 0x2000)\n"

"    00000000'0a634000-00000000'0a634fff rwx         0      1000  /system/lib/fake.so\n"

"--->Fault address falls at 00001234'5a534040 after any mapped regions\n";

#else

"    0a434000-0a434fff -w-      1000      1000  (load base 0xd000)\n"

"    0a534000-0a534fff --x      3000      1000  (load base 0x2000)\n"

"    0a634000-0a634fff rwx         0      1000  /system/lib/fake.so\n"

"--->Fault address falls at 0f534040 after any mapped regions\n";

#endif

  ASSERT_STREQ(expected_dump, tombstone_contents.c_str());



  // Verify that the log buf is empty, and no error messages.

  ASSERT_STREQ("", getFakeLogBuf().c_str());

  ASSERT_STREQ("", getFakeLogPrint().c_str());

}



TEST_F(DumpMapsTest, multiple_maps_getsiginfo_fail) {

  backtrace_map_t map;



  map.start = 0xa434000;

  map.end = 0xa435000;

  map.offset = 0x1000;

  map.load_base = 0xd000;

  map.flags = PROT_WRITE;

  map_mock_->AddMap(map);



  siginfo_t si;

  si.si_signo = 0;

  ptrace_set_fake_getsiginfo(si);

  dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



  std::string tombstone_contents;

  ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

  ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

  const char* expected_dump = \

"Cannot get siginfo for 100: Bad address\n"

"\nmemory map:\n"

#if defined(__LP64__)

"    00000000'0a434000-00000000'0a434fff -w-      1000      1000  (load base 0xd000)\n";

#else

"    0a434000-0a434fff -w-      1000      1000  (load base 0xd000)\n";

#endif

  ASSERT_STREQ(expected_dump, tombstone_contents.c_str());



  // Verify that the log buf is empty, and no error messages.

  ASSERT_STREQ("DEBUG Cannot get siginfo for 100: Bad address\n",

               getFakeLogBuf().c_str());

  ASSERT_STREQ("", getFakeLogPrint().c_str());

}



TEST_F(DumpMapsTest, multiple_maps_check_signal_has_si_addr) {

  backtrace_map_t map;



  map.start = 0xa434000;

  map.end = 0xa435000;

  map.flags = PROT_WRITE;

  map_mock_->AddMap(map);



  for (int i = 1; i < 255; i++) {

    ASSERT_TRUE(ftruncate(log_.tfd, 0) == 0);

    ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);



    siginfo_t si;

    si.si_signo = i;

    si.si_addr = reinterpret_cast<void*>(0x1000);

    ptrace_set_fake_getsiginfo(si);

    dump_all_maps(backtrace_mock_.get(), map_mock_.get(), &log_, 100);



    std::string tombstone_contents;

    ASSERT_TRUE(lseek(log_.tfd, 0, SEEK_SET) == 0);

    ASSERT_TRUE(android::base::ReadFdToString(log_.tfd, &tombstone_contents));

    bool has_addr = false;

    switch (si.si_signo) {

    case SIGBUS:

    case SIGFPE:

    case SIGILL:

    case SIGSEGV:

    case SIGTRAP:

      has_addr = true;

      break;

    }



    const char* expected_addr_dump = \

"\nmemory map: (fault address prefixed with --->)\n"

#if defined(__LP64__)

"--->Fault address falls at 00000000'00001000 before any mapped regions\n"

"    00000000'0a434000-00000000'0a434fff -w-         0      1000\n";

#else

"--->Fault address falls at 00001000 before any mapped regions\n"

"    0a434000-0a434fff -w-         0      1000\n";

#endif

    const char* expected_dump = \

"\nmemory map:\n"

#if defined(__LP64__)

"    00000000'0a434000-00000000'0a434fff -w-         0      1000\n";

#else

"    0a434000-0a434fff -w-         0      1000\n";

#endif

    if (has_addr) {

      ASSERT_STREQ(expected_addr_dump, tombstone_contents.c_str())

        << "Signal " << si.si_signo << " expected to include an address.";

    } else {

      ASSERT_STREQ(expected_dump, tombstone_contents.c_str())

        << "Signal " << si.si_signo << " is not expected to include an address.";

    }



    // Verify that the log buf is empty, and no error messages.

    ASSERT_STREQ("", getFakeLogBuf().c_str());

    ASSERT_STREQ("", getFakeLogPrint().c_str());

  }

}

debuggerd/test/elf_fake.cpp

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Original line number Diff line number Diff line 
/*

 * Copyright (C) 2015 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#include <stdint.h>



#include <string>



class Backtrace;



std::string g_build_id;



void elf_set_fake_build_id(const std::string& build_id) {

  g_build_id = build_id;

}



bool elf_get_build_id(Backtrace*, uintptr_t, std::string* build_id) {

  if (g_build_id != "") {

    *build_id = g_build_id;

    return true;

  }

  return false;

}

debuggerd/test/elf_fake.h

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Original line number Diff line number Diff line 
/*

 * Copyright (C) 2015 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



#ifndef _DEBUGGERD_TEST_ELF_FAKE_H

#define _DEBUGGERD_TEST_ELF_FAKE_H



#include <string>



void elf_set_fake_build_id(const std::string&);



#endif // _DEBUGGERD_TEST_ELF_FAKE_H