Index: crash_collector.cc |
diff --git a/crash_collector.cc b/crash_collector.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..492f2e8bc0511437866f031bb3eeb44d7c15fcc5 |
--- /dev/null |
+++ b/crash_collector.cc |
@@ -0,0 +1,150 @@ |
+// Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "crash-reporter/crash_collector.h" |
+ |
+#include <pwd.h> // For struct passwd. |
+#include <sys/types.h> // for mode_t. |
+ |
+#include "base/file_util.h" |
+#include "base/logging.h" |
+#include "base/string_util.h" |
+#include "crash-reporter/system_logging.h" |
+ |
+static const char kDefaultUserName[] = "chronos"; |
+static const char kSystemCrashPath[] = "/var/spool/crash"; |
+static const char kUserCrashPath[] = "/home/chronos/user/crash"; |
+ |
+// Directory mode of the user crash spool directory. |
+static const mode_t kUserCrashPathMode = 0755; |
+ |
+// Directory mode of the system crash spool directory. |
+static const mode_t kSystemCrashPathMode = 01755; |
+ |
+static const uid_t kRootOwner = 0; |
+static const uid_t kRootGroup = 0; |
+ |
+CrashCollector::CrashCollector() : forced_crash_directory_(NULL) { |
+} |
+ |
+CrashCollector::~CrashCollector() { |
+} |
+ |
+void CrashCollector::Initialize( |
+ CrashCollector::CountCrashFunction count_crash_function, |
+ CrashCollector::IsFeedbackAllowedFunction is_feedback_allowed_function, |
+ SystemLogging *logger) { |
+ CHECK(count_crash_function != NULL); |
+ CHECK(is_feedback_allowed_function != NULL); |
+ CHECK(logger != NULL); |
+ |
+ count_crash_function_ = count_crash_function; |
+ is_feedback_allowed_function_ = is_feedback_allowed_function; |
+ logger_ = logger; |
+} |
+ |
+std::string CrashCollector::FormatDumpBasename(const std::string &exec_name, |
+ time_t timestamp, |
+ pid_t pid) { |
+ struct tm tm; |
+ localtime_r(×tamp, &tm); |
+ return StringPrintf("%s.%04d%02d%02d.%02d%02d%02d.%d", |
+ exec_name.c_str(), |
+ tm.tm_year + 1900, |
+ tm.tm_mon + 1, |
+ tm.tm_mday, |
+ tm.tm_hour, |
+ tm.tm_min, |
+ tm.tm_sec, |
+ pid); |
+} |
+ |
+FilePath CrashCollector::GetCrashDirectoryInfo( |
+ uid_t process_euid, |
+ uid_t default_user_id, |
+ gid_t default_user_group, |
+ mode_t *mode, |
+ uid_t *directory_owner, |
+ gid_t *directory_group) { |
+ if (process_euid == default_user_id) { |
+ *mode = kUserCrashPathMode; |
+ *directory_owner = default_user_id; |
+ *directory_group = default_user_group; |
+ return FilePath(kUserCrashPath); |
+ } else { |
+ *mode = kSystemCrashPathMode; |
+ *directory_owner = kRootOwner; |
+ *directory_group = kRootGroup; |
+ return FilePath(kSystemCrashPath); |
+ } |
+} |
+ |
+bool CrashCollector::GetUserInfoFromName(const std::string &name, |
+ uid_t *uid, |
+ gid_t *gid) { |
+ char storage[256]; |
+ struct passwd passwd_storage; |
+ struct passwd *passwd_result = NULL; |
+ |
+ if (getpwnam_r(name.c_str(), &passwd_storage, storage, sizeof(storage), |
+ &passwd_result) != 0 || passwd_result == NULL) { |
+ logger_->LogError("Cannot find user named %s", name.c_str()); |
+ return false; |
+ } |
+ |
+ *uid = passwd_result->pw_uid; |
+ *gid = passwd_result->pw_gid; |
+ return true; |
+} |
+ |
+bool CrashCollector::GetCreatedCrashDirectoryByEuid(uid_t euid, |
+ FilePath *crash_directory) { |
+ uid_t default_user_id; |
+ gid_t default_user_group; |
+ |
+ // For testing. |
+ if (forced_crash_directory_ != NULL) { |
+ *crash_directory = FilePath(forced_crash_directory_); |
+ return true; |
+ } |
+ |
+ if (!GetUserInfoFromName(kDefaultUserName, |
+ &default_user_id, |
+ &default_user_group)) { |
+ logger_->LogError("Could not find default user info"); |
+ return false; |
+ } |
+ mode_t directory_mode; |
+ uid_t directory_owner; |
+ gid_t directory_group; |
+ *crash_directory = |
+ GetCrashDirectoryInfo(euid, |
+ default_user_id, |
+ default_user_group, |
+ &directory_mode, |
+ &directory_owner, |
+ &directory_group); |
+ |
+ if (!file_util::PathExists(*crash_directory)) { |
+ // Create the spool directory with the appropriate mode (regardless of |
+ // umask) and ownership. |
+ mode_t old_mask = umask(0); |
+ if (mkdir(crash_directory->value().c_str(), directory_mode) < 0 || |
+ chown(crash_directory->value().c_str(), |
+ directory_owner, |
+ directory_group) < 0) { |
+ logger_->LogError("Unable to create appropriate crash directory"); |
+ return false; |
+ } |
+ umask(old_mask); |
+ } |
+ |
+ if (!file_util::PathExists(*crash_directory)) { |
+ logger_->LogError("Unable to create crash directory %s", |
+ crash_directory->value().c_str()); |
+ return false; |
+ } |
+ |
+ return true; |
+} |