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Diffstat (limited to '')
-rw-r--r-- | toolkit/crashreporter/breakpad-client/linux/minidump_writer/linux_core_dumper_unittest.cc | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/toolkit/crashreporter/breakpad-client/linux/minidump_writer/linux_core_dumper_unittest.cc b/toolkit/crashreporter/breakpad-client/linux/minidump_writer/linux_core_dumper_unittest.cc new file mode 100644 index 0000000000..2e973167fd --- /dev/null +++ b/toolkit/crashreporter/breakpad-client/linux/minidump_writer/linux_core_dumper_unittest.cc @@ -0,0 +1,192 @@ +// Copyright (c) 2012, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// linux_core_dumper_unittest.cc: +// Unit tests for google_breakpad::LinuxCoreDumoer. + +#include <string> + +#include "breakpad_googletest_includes.h" +#include "linux/minidump_writer/linux_core_dumper.h" +#include "common/linux/tests/crash_generator.h" +#include "common/using_std_string.h" + +using namespace google_breakpad; + +TEST(LinuxCoreDumperTest, GetMappingAbsolutePath) { + const LinuxCoreDumper dumper(getpid(), "core", "/tmp", "/mnt/root"); + const MappingInfo mapping = {0, 0, {0, 0}, 0, false, "/usr/lib/libc.so"}; + + char path[PATH_MAX]; + dumper.GetMappingAbsolutePath(mapping, path); + + EXPECT_STREQ("/mnt/root/usr/lib/libc.so", path); +} + +TEST(LinuxCoreDumperTest, BuildProcPath) { + const pid_t pid = getpid(); + const char procfs_path[] = "/procfs_copy"; + LinuxCoreDumper dumper(getpid(), "core_file", procfs_path); + + char maps_path[NAME_MAX] = ""; + char maps_path_expected[NAME_MAX]; + snprintf(maps_path_expected, sizeof(maps_path_expected), + "%s/maps", procfs_path); + EXPECT_TRUE(dumper.BuildProcPath(maps_path, pid, "maps")); + EXPECT_STREQ(maps_path_expected, maps_path); + + EXPECT_FALSE(dumper.BuildProcPath(NULL, pid, "maps")); + EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, "")); + EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, NULL)); + + char long_node[NAME_MAX]; + size_t long_node_len = NAME_MAX - strlen(procfs_path) - 1; + memset(long_node, 'a', long_node_len); + long_node[long_node_len] = '\0'; + EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, long_node)); +} + +TEST(LinuxCoreDumperTest, VerifyDumpWithMultipleThreads) { + CrashGenerator crash_generator; + if (!crash_generator.HasDefaultCorePattern()) { + fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test " + "is skipped due to non-default core pattern\n"); + return; + } + + const unsigned kNumOfThreads = 3; + const unsigned kCrashThread = 1; + const int kCrashSignal = SIGABRT; + pid_t child_pid; + ASSERT_TRUE(crash_generator.CreateChildCrash(kNumOfThreads, kCrashThread, + kCrashSignal, &child_pid)); + + const string core_file = crash_generator.GetCoreFilePath(); + const string procfs_path = crash_generator.GetDirectoryOfProcFilesCopy(); + +#if defined(__ANDROID__) + struct stat st; + if (stat(core_file.c_str(), &st) != 0) { + fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test is " + "skipped due to no core file being generated\n"); + return; + } +#endif + + LinuxCoreDumper dumper(child_pid, core_file.c_str(), procfs_path.c_str()); + + EXPECT_TRUE(dumper.Init()); + + EXPECT_TRUE(dumper.IsPostMortem()); + + // These are no-ops and should always return true. + EXPECT_TRUE(dumper.ThreadsSuspend()); + EXPECT_TRUE(dumper.ThreadsResume()); + + // Linux does not set the crash address with SIGABRT, so make sure it always + // sets the crash address to 0. + EXPECT_EQ(0U, dumper.crash_address()); + EXPECT_EQ(kCrashSignal, dumper.crash_signal()); + EXPECT_EQ(crash_generator.GetThreadId(kCrashThread), + dumper.crash_thread()); + +#if defined(THREAD_SANITIZER) + EXPECT_GE(dumper.threads().size(), kNumOfThreads); +#else + EXPECT_EQ(dumper.threads().size(), kNumOfThreads); +#endif + for (unsigned i = 0; i < kNumOfThreads; ++i) { + ThreadInfo info; + EXPECT_TRUE(dumper.GetThreadInfoByIndex(i, &info)); + const void* stack; + size_t stack_len; + EXPECT_TRUE(dumper.GetStackInfo(&stack, &stack_len, info.stack_pointer)); + EXPECT_EQ(getpid(), info.ppid); + } +} + +TEST(LinuxCoreDumperTest, VerifyExceptionDetails) { + CrashGenerator crash_generator; + if (!crash_generator.HasDefaultCorePattern()) { + fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test " + "is skipped due to non-default core pattern\n"); + return; + } + +#ifndef si_syscall + fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test is " + "skipped due to old kernel/C library headers\n"); + return; +#endif + + const unsigned kNumOfThreads = 2; + const unsigned kCrashThread = 1; + const int kCrashSignal = SIGSYS; + pid_t child_pid; + ASSERT_TRUE(crash_generator.CreateChildCrash(kNumOfThreads, kCrashThread, + kCrashSignal, &child_pid)); + + const string core_file = crash_generator.GetCoreFilePath(); + const string procfs_path = crash_generator.GetDirectoryOfProcFilesCopy(); + +#if defined(__ANDROID__) + struct stat st; + if (stat(core_file.c_str(), &st) != 0) { + fprintf(stderr, "LinuxCoreDumperTest.VerifyExceptionDetails test is " + "skipped due to no core file being generated\n"); + return; + } +#endif + + LinuxCoreDumper dumper(child_pid, core_file.c_str(), procfs_path.c_str()); + + EXPECT_TRUE(dumper.Init()); + + EXPECT_TRUE(dumper.IsPostMortem()); + +#if defined(__ANDROID__) + // TODO: For some reason, Android doesn't seem to pass this. + if (!dumper.crash_address()) { + fprintf(stderr, "LinuxCoreDumperTest.VerifyExceptionDetails test is " + "skipped due to missing signal details on Android\n"); + return; + } +#endif + + // Check the exception details. + EXPECT_NE(0U, dumper.crash_address()); + EXPECT_EQ(kCrashSignal, dumper.crash_signal()); + EXPECT_EQ(crash_generator.GetThreadId(kCrashThread), + dumper.crash_thread()); + + // We check the length, but not the actual fields. We sent SIGSYS ourselves + // instead of the kernel, so the extended fields are garbage. + const std::vector<uint64_t> info(dumper.crash_exception_info()); + EXPECT_EQ(2U, info.size()); +} |