1 // Copyright (c) 2012, Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 // linux_core_dumper_unittest.cc: 31 // Unit tests for google_breakpad::LinuxCoreDumoer. 32 33 #include <string> 34 35 #include "breakpad_googletest_includes.h" 36 #include "client/linux/minidump_writer/linux_core_dumper.h" 37 #include "common/linux/tests/crash_generator.h" 38 #include "common/using_std_string.h" 39 40 using namespace google_breakpad; 41 42 TEST(LinuxCoreDumperTest, BuildProcPath) { 43 const pid_t pid = getpid(); 44 const char procfs_path[] = "/procfs_copy"; 45 LinuxCoreDumper dumper(getpid(), "core_file", procfs_path); 46 47 char maps_path[NAME_MAX] = ""; 48 char maps_path_expected[NAME_MAX]; 49 snprintf(maps_path_expected, sizeof(maps_path_expected), 50 "%s/maps", procfs_path); 51 EXPECT_TRUE(dumper.BuildProcPath(maps_path, pid, "maps")); 52 EXPECT_STREQ(maps_path_expected, maps_path); 53 54 EXPECT_FALSE(dumper.BuildProcPath(NULL, pid, "maps")); 55 EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, "")); 56 EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, NULL)); 57 58 char long_node[NAME_MAX]; 59 size_t long_node_len = NAME_MAX - strlen(procfs_path) - 1; 60 memset(long_node, 'a', long_node_len); 61 long_node[long_node_len] = '\0'; 62 EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, long_node)); 63 } 64 65 TEST(LinuxCoreDumperTest, VerifyDumpWithMultipleThreads) { 66 CrashGenerator crash_generator; 67 if (!crash_generator.HasDefaultCorePattern()) { 68 fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test " 69 "is skipped due to non-default core pattern\n"); 70 return; 71 } 72 73 const unsigned kNumOfThreads = 3; 74 const unsigned kCrashThread = 1; 75 const int kCrashSignal = SIGABRT; 76 pid_t child_pid; 77 ASSERT_TRUE(crash_generator.CreateChildCrash(kNumOfThreads, kCrashThread, 78 kCrashSignal, &child_pid)); 79 80 const string core_file = crash_generator.GetCoreFilePath(); 81 const string procfs_path = crash_generator.GetDirectoryOfProcFilesCopy(); 82 83 #if defined(__ANDROID__) 84 struct stat st; 85 if (stat(core_file.c_str(), &st) != 0) { 86 fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test is " 87 "skipped due to no core file being generated"); 88 return; 89 } 90 #endif 91 92 LinuxCoreDumper dumper(child_pid, core_file.c_str(), procfs_path.c_str()); 93 94 EXPECT_TRUE(dumper.Init()); 95 96 EXPECT_TRUE(dumper.IsPostMortem()); 97 98 // These are no-ops and should always return true. 99 EXPECT_TRUE(dumper.ThreadsSuspend()); 100 EXPECT_TRUE(dumper.ThreadsResume()); 101 102 // LinuxCoreDumper cannot determine the crash address and thus it always 103 // sets the crash address to 0. 104 EXPECT_EQ(0U, dumper.crash_address()); 105 EXPECT_EQ(kCrashSignal, dumper.crash_signal()); 106 EXPECT_EQ(crash_generator.GetThreadId(kCrashThread), 107 dumper.crash_thread()); 108 109 EXPECT_EQ(kNumOfThreads, dumper.threads().size()); 110 for (unsigned i = 0; i < kNumOfThreads; ++i) { 111 ThreadInfo info; 112 EXPECT_TRUE(dumper.GetThreadInfoByIndex(i, &info)); 113 const void* stack; 114 size_t stack_len; 115 EXPECT_TRUE(dumper.GetStackInfo(&stack, &stack_len, info.stack_pointer)); 116 EXPECT_EQ(getpid(), info.ppid); 117 } 118 } 119
