Update Crashpad to 8e37886d418dd042c3c7bfadac99214739ee4d98

third_party/crashpad/crashpad/util/posix/process_info_test.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // 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 "util/posix/process_info.h"
 
+#include <signal.h>
 #include <time.h>
-#include <stdio.h>
 #include <unistd.h>
 
+#include <algorithm>
 #include <set>
 #include <string>
 #include <vector>
 
-#include "base/files/scoped_file.h"
+#include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "gtest/gtest.h"
 #include "test/errors.h"
+#include "test/main_arguments.h"
 #include "util/misc/implicit_cast.h"
 
-#if defined(OS_MACOSX)
-#include <crt_externs.h>
-#endif
-
 namespace crashpad {
 namespace test {
 namespace {
 
-void TestSelfProcess(const ProcessInfo& process_info) {
-  EXPECT_EQ(getpid(), process_info.ProcessID());
-  EXPECT_EQ(getppid(), process_info.ParentProcessID());
-
+void TestProcessSelfOrClone(const ProcessInfo& process_info) {
   // There’s no system call to obtain the saved set-user ID or saved set-group
   // ID in an easy way. Normally, they are the same as the effective user ID and
   // effective group ID, so just check against those.
   EXPECT_EQ(getuid(), process_info.RealUserID());
   const uid_t euid = geteuid();
   EXPECT_EQ(euid, process_info.EffectiveUserID());
   EXPECT_EQ(euid, process_info.SavedUserID());
+
   const gid_t gid = getgid();
   EXPECT_EQ(gid, process_info.RealGroupID());
   const gid_t egid = getegid();
   EXPECT_EQ(egid, process_info.EffectiveGroupID());
   EXPECT_EQ(egid, process_info.SavedGroupID());
 
   // Test SupplementaryGroups().
   int group_count = getgroups(0, nullptr);
   ASSERT_GE(group_count, 0) << ErrnoMessage("getgroups");
 
@@ skipping 11 matching lines @@
   // and saved set-group IDs. The effective and saved set-group IDs are expected
   // to be identical (see above).
   group_set.insert(gid);
   group_set.insert(egid);
 
   EXPECT_EQ(group_set, process_info.AllGroups());
 
   // The test executable isn’t expected to change privileges.
   EXPECT_FALSE(process_info.DidChangePrivileges());
 
+  bool is_64_bit;
+  ASSERT_TRUE(process_info.Is64Bit(&is_64_bit));
 #if defined(ARCH_CPU_64_BITS)
-  EXPECT_TRUE(process_info.Is64Bit());
+  EXPECT_TRUE(is_64_bit);
 #else
-  EXPECT_FALSE(process_info.Is64Bit());
+  EXPECT_FALSE(is_64_bit);
 #endif
 
   // Test StartTime(). This program must have started at some time in the past.
   timeval start_time;
-  process_info.StartTime(&start_time);
+  ASSERT_TRUE(process_info.StartTime(&start_time));
+  EXPECT_FALSE(start_time.tv_sec == 0 && start_time.tv_usec == 0);
   time_t now;
   time(&now);
   EXPECT_LE(start_time.tv_sec, now);
 
   std::vector<std::string> argv;
   ASSERT_TRUE(process_info.Arguments(&argv));
 
-  // gtest argv processing scrambles argv, but it leaves argc and argv[0]
-  // intact, so test those.
+  const std::vector<std::string>& expect_argv = GetMainArguments();
 
-#if defined(OS_MACOSX)
-  int expect_argc = *_NSGetArgc();
-  char** expect_argv = *_NSGetArgv();
-#elif defined(OS_LINUX) || defined(OS_ANDROID)
-  std::vector<std::string> expect_arg_vector;
-  {
-    base::ScopedFILE cmdline(fopen("/proc/self/cmdline", "re"));
-    ASSERT_NE(nullptr, cmdline.get()) << ErrnoMessage("fopen");
+  // expect_argv always contains the initial view of the arguments at the time
+  // the program was invoked. argv may contain this view, or it may contain the
+  // current view of arguments after gtest argv processing. argv may be a subset
+  // of expect_argv.
+  //
+  // gtest argv processing always leaves argv[0] intact, so this can be checked
+  // directly.
+  ASSERT_FALSE(expect_argv.empty());
+  ASSERT_FALSE(argv.empty());
+  EXPECT_EQ(expect_argv[0], argv[0]);
 
-    int expect_arg_char;
-    std::string expect_arg_string;
-    while ((expect_arg_char = fgetc(cmdline.get())) != EOF) {
-      if (expect_arg_char != '\0') {
-        expect_arg_string.append(1, expect_arg_char);
-      } else {
-        expect_arg_vector.push_back(expect_arg_string);
-        expect_arg_string.clear();
-      }
-    }
-    ASSERT_EQ(0, ferror(cmdline.get())) << ErrnoMessage("fgetc");
-    ASSERT_TRUE(expect_arg_string.empty());
+  EXPECT_LE(argv.size(), expect_argv.size());
+
+  // Everything else in argv should have a match in expect_argv too, but things
+  // may have moved around.
+  for (size_t arg_index = 1; arg_index < argv.size(); ++arg_index) {
+    const std::string& arg = argv[arg_index];
+    SCOPED_TRACE(
+        base::StringPrintf("arg_index %zu, arg %s", arg_index, arg.c_str()));
+    EXPECT_NE(expect_argv.end(), std::find(argv.begin(), argv.end(), arg));
   }
-
-  std::vector<const char*> expect_argv_storage;
-  for (const std::string& expect_arg_string : expect_arg_vector) {
-    expect_argv_storage.push_back(expect_arg_string.c_str());
-  }
-
-  int expect_argc = expect_argv_storage.size();
-  const char* const* expect_argv =
-      !expect_argv_storage.empty() ? &expect_argv_storage[0] : nullptr;
-#else
-#error Obtain expect_argc and expect_argv correctly on your system.
-#endif
-
-  int argc = implicit_cast<int>(argv.size());
-  EXPECT_EQ(expect_argc, argc);
-
-  ASSERT_GE(expect_argc, 1);
-  ASSERT_GE(argc, 1);
-
-  EXPECT_EQ(std::string(expect_argv[0]), argv[0]);
 }
 
+void TestSelfProcess(const ProcessInfo& process_info) {
+  EXPECT_EQ(getpid(), process_info.ProcessID());
+  EXPECT_EQ(getppid(), process_info.ParentProcessID());
+
+  TestProcessSelfOrClone(process_info);
+}
 
 TEST(ProcessInfo, Self) {
   ProcessInfo process_info;
   ASSERT_TRUE(process_info.Initialize(getpid()));
   TestSelfProcess(process_info);
 }
 
 #if defined(OS_MACOSX)
 TEST(ProcessInfo, SelfTask) {
   ProcessInfo process_info;
@@ skipping 12 matching lines @@
   EXPECT_EQ(implicit_cast<pid_t>(0), process_info.ParentProcessID());
   EXPECT_EQ(implicit_cast<uid_t>(0), process_info.RealUserID());
   EXPECT_EQ(implicit_cast<uid_t>(0), process_info.EffectiveUserID());
   EXPECT_EQ(implicit_cast<uid_t>(0), process_info.SavedUserID());
   EXPECT_EQ(implicit_cast<gid_t>(0), process_info.RealGroupID());
   EXPECT_EQ(implicit_cast<gid_t>(0), process_info.EffectiveGroupID());
   EXPECT_EQ(implicit_cast<gid_t>(0), process_info.SavedGroupID());
   EXPECT_FALSE(process_info.AllGroups().empty());
 }
 
+TEST(ProcessInfo, Forked) {
+  pid_t pid = fork();
+  if (pid == 0) {
+    raise(SIGSTOP);
+    _exit(0);
+  }
+  ASSERT_GE(pid, 0) << ErrnoMessage("fork");
+
+  ProcessInfo process_info;
+  ASSERT_TRUE(process_info.Initialize(pid));
+
+  EXPECT_EQ(pid, process_info.ProcessID());
+  EXPECT_EQ(getpid(), process_info.ParentProcessID());
+
+  TestProcessSelfOrClone(process_info);
+  kill(pid, SIGKILL);
+}
+
 }  // namespace
 }  // namespace test
 }  // namespace crashpad