diff options
Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/linux/elf_core_dump_unittest.cc')
| -rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/linux/elf_core_dump_unittest.cc | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/linux/elf_core_dump_unittest.cc b/toolkit/crashreporter/google-breakpad/src/common/linux/elf_core_dump_unittest.cc new file mode 100644 index 0000000000..2399c12fda --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/common/linux/elf_core_dump_unittest.cc @@ -0,0 +1,265 @@ +// Copyright (c) 2011, 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. + +// elf_core_dump_unittest.cc: Unit tests for google_breakpad::ElfCoreDump. + +#include <sys/procfs.h> + +#include <set> +#include <string> + +#include "breakpad_googletest_includes.h" +#include "common/linux/elf_core_dump.h" +#include "common/linux/memory_mapped_file.h" +#include "common/tests/file_utils.h" +#include "common/linux/tests/crash_generator.h" +#include "common/using_std_string.h" + +using google_breakpad::AutoTempDir; +using google_breakpad::CrashGenerator; +using google_breakpad::ElfCoreDump; +using google_breakpad::MemoryMappedFile; +using google_breakpad::MemoryRange; +using google_breakpad::WriteFile; +using std::set; + +TEST(ElfCoreDumpTest, DefaultConstructor) { + ElfCoreDump core; + EXPECT_FALSE(core.IsValid()); + EXPECT_EQ(NULL, core.GetHeader()); + EXPECT_EQ(0U, core.GetProgramHeaderCount()); + EXPECT_EQ(NULL, core.GetProgramHeader(0)); + EXPECT_EQ(NULL, core.GetFirstProgramHeaderOfType(PT_LOAD)); + EXPECT_FALSE(core.GetFirstNote().IsValid()); +} + +TEST(ElfCoreDumpTest, TestElfHeader) { + ElfCoreDump::Ehdr header; + memset(&header, 0, sizeof(header)); + + AutoTempDir temp_dir; + string core_path = temp_dir.path() + "/core"; + const char* core_file = core_path.c_str(); + MemoryMappedFile mapped_core_file; + ElfCoreDump core; + + ASSERT_TRUE(WriteFile(core_file, &header, sizeof(header) - 1)); + ASSERT_TRUE(mapped_core_file.Map(core_file, 0)); + core.SetContent(mapped_core_file.content()); + EXPECT_FALSE(core.IsValid()); + EXPECT_EQ(NULL, core.GetHeader()); + EXPECT_EQ(0U, core.GetProgramHeaderCount()); + EXPECT_EQ(NULL, core.GetProgramHeader(0)); + EXPECT_EQ(NULL, core.GetFirstProgramHeaderOfType(PT_LOAD)); + EXPECT_FALSE(core.GetFirstNote().IsValid()); + + ASSERT_TRUE(WriteFile(core_file, &header, sizeof(header))); + ASSERT_TRUE(mapped_core_file.Map(core_file, 0)); + core.SetContent(mapped_core_file.content()); + EXPECT_FALSE(core.IsValid()); + + header.e_ident[0] = ELFMAG0; + ASSERT_TRUE(WriteFile(core_file, &header, sizeof(header))); + ASSERT_TRUE(mapped_core_file.Map(core_file, 0)); + core.SetContent(mapped_core_file.content()); + EXPECT_FALSE(core.IsValid()); + + header.e_ident[1] = ELFMAG1; + ASSERT_TRUE(WriteFile(core_file, &header, sizeof(header))); + ASSERT_TRUE(mapped_core_file.Map(core_file, 0)); + core.SetContent(mapped_core_file.content()); + EXPECT_FALSE(core.IsValid()); + + header.e_ident[2] = ELFMAG2; + ASSERT_TRUE(WriteFile(core_file, &header, sizeof(header))); + ASSERT_TRUE(mapped_core_file.Map(core_file, 0)); + core.SetContent(mapped_core_file.content()); + EXPECT_FALSE(core.IsValid()); + + header.e_ident[3] = ELFMAG3; + ASSERT_TRUE(WriteFile(core_file, &header, sizeof(header))); + ASSERT_TRUE(mapped_core_file.Map(core_file, 0)); + core.SetContent(mapped_core_file.content()); + EXPECT_FALSE(core.IsValid()); + + header.e_ident[4] = ElfCoreDump::kClass; + ASSERT_TRUE(WriteFile(core_file, &header, sizeof(header))); + ASSERT_TRUE(mapped_core_file.Map(core_file, 0)); + core.SetContent(mapped_core_file.content()); + EXPECT_FALSE(core.IsValid()); + + header.e_version = EV_CURRENT; + ASSERT_TRUE(WriteFile(core_file, &header, sizeof(header))); + ASSERT_TRUE(mapped_core_file.Map(core_file, 0)); + core.SetContent(mapped_core_file.content()); + EXPECT_FALSE(core.IsValid()); + + header.e_type = ET_CORE; + ASSERT_TRUE(WriteFile(core_file, &header, sizeof(header))); + ASSERT_TRUE(mapped_core_file.Map(core_file, 0)); + core.SetContent(mapped_core_file.content()); + EXPECT_TRUE(core.IsValid()); +} + +TEST(ElfCoreDumpTest, ValidCoreFile) { + CrashGenerator crash_generator; + if (!crash_generator.HasDefaultCorePattern()) { + fprintf(stderr, "ElfCoreDumpTest.ValidCoreFile test is skipped " + "due to non-default core pattern"); + return; + } + + const unsigned kNumOfThreads = 3; + const unsigned kCrashThread = 1; + const int kCrashSignal = SIGABRT; + ASSERT_TRUE(crash_generator.CreateChildCrash(kNumOfThreads, kCrashThread, + kCrashSignal, NULL)); + pid_t expected_crash_thread_id = crash_generator.GetThreadId(kCrashThread); + set<pid_t> expected_thread_ids; + for (unsigned i = 0; i < kNumOfThreads; ++i) { + expected_thread_ids.insert(crash_generator.GetThreadId(i)); + } + +#if defined(__ANDROID__) + struct stat st; + if (stat(crash_generator.GetCoreFilePath().c_str(), &st) != 0) { + fprintf(stderr, "ElfCoreDumpTest.ValidCoreFile test is skipped " + "due to no core file being generated"); + return; + } +#endif + + MemoryMappedFile mapped_core_file; + ASSERT_TRUE( + mapped_core_file.Map(crash_generator.GetCoreFilePath().c_str(), 0)); + + ElfCoreDump core; + core.SetContent(mapped_core_file.content()); + EXPECT_TRUE(core.IsValid()); + + // Based on write_note_info() in linux/kernel/fs/binfmt_elf.c, notes are + // ordered as follows (NT_PRXFPREG and NT_386_TLS are i386 specific): + // Thread Name Type + // ------------------------------------------------------------------- + // 1st thread CORE NT_PRSTATUS + // process-wide CORE NT_PRPSINFO + // process-wide CORE NT_AUXV + // 1st thread CORE NT_FPREGSET + // 1st thread LINUX NT_PRXFPREG + // 1st thread LINUX NT_386_TLS + // + // 2nd thread CORE NT_PRSTATUS + // 2nd thread CORE NT_FPREGSET + // 2nd thread LINUX NT_PRXFPREG + // 2nd thread LINUX NT_386_TLS + // + // 3rd thread CORE NT_PRSTATUS + // 3rd thread CORE NT_FPREGSET + // 3rd thread LINUX NT_PRXFPREG + // 3rd thread LINUX NT_386_TLS + + size_t num_nt_prpsinfo = 0; + size_t num_nt_prstatus = 0; + size_t num_pr_fpvalid = 0; +#if defined(__i386__) || defined(__x86_64__) + size_t num_nt_fpregset = 0; +#endif +#if defined(__i386__) + size_t num_nt_prxfpreg = 0; +#endif + set<pid_t> actual_thread_ids; + ElfCoreDump::Note note = core.GetFirstNote(); + while (note.IsValid()) { + MemoryRange name = note.GetName(); + MemoryRange description = note.GetDescription(); + EXPECT_FALSE(name.IsEmpty()); + EXPECT_FALSE(description.IsEmpty()); + + switch (note.GetType()) { + case NT_PRPSINFO: { + EXPECT_TRUE(description.data() != NULL); + EXPECT_EQ(sizeof(elf_prpsinfo), description.length()); + ++num_nt_prpsinfo; + break; + } + case NT_PRSTATUS: { + EXPECT_TRUE(description.data() != NULL); + EXPECT_EQ(sizeof(elf_prstatus), description.length()); + const elf_prstatus* status = description.GetData<elf_prstatus>(0); + actual_thread_ids.insert(status->pr_pid); + if (num_nt_prstatus == 0) { + EXPECT_EQ(expected_crash_thread_id, status->pr_pid); + EXPECT_EQ(kCrashSignal, status->pr_info.si_signo); + } + ++num_nt_prstatus; + if (status->pr_fpvalid) + ++num_pr_fpvalid; + break; + } +#if defined(__i386__) || defined(__x86_64__) + case NT_FPREGSET: { + EXPECT_TRUE(description.data() != NULL); + EXPECT_EQ(sizeof(user_fpregs_struct), description.length()); + ++num_nt_fpregset; + break; + } +#endif +#if defined(__i386__) + case NT_PRXFPREG: { + EXPECT_TRUE(description.data() != NULL); + EXPECT_EQ(sizeof(user_fpxregs_struct), description.length()); + ++num_nt_prxfpreg; + break; + } +#endif + default: + break; + } + note = note.GetNextNote(); + } + +#if defined(THREAD_SANITIZER) + for (std::set<pid_t>::const_iterator expected = expected_thread_ids.begin(); + expected != expected_thread_ids.end(); + ++expected) { + EXPECT_NE(actual_thread_ids.find(*expected), actual_thread_ids.end()); + } + EXPECT_GE(num_nt_prstatus, kNumOfThreads); +#else + EXPECT_EQ(actual_thread_ids, expected_thread_ids); + EXPECT_EQ(num_nt_prstatus, kNumOfThreads); +#endif + EXPECT_EQ(1U, num_nt_prpsinfo); +#if defined(__i386__) || defined(__x86_64__) + EXPECT_EQ(num_pr_fpvalid, num_nt_fpregset); +#endif +#if defined(__i386__) + EXPECT_EQ(num_pr_fpvalid, num_nt_prxfpreg); +#endif +} |