minidump_descriptor.cc

// Copyright (c) 2012 Google Inc.
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#include <stdio.h>

#include "client/linux/handler/minidump_descriptor.h"

#include "common/linux/guid_creator.h"

namespace google_breakpad {

//static
const MinidumpDescriptor::MicrodumpOnConsole
    MinidumpDescriptor::kMicrodumpOnConsole = {};

MinidumpDescriptor::MinidumpDescriptor(const MinidumpDescriptor& descriptor)
    : mode_(descriptor.mode_),
      fd_(descriptor.fd_),
      directory_(descriptor.directory_),
      c_path_(NULL),
      size_limit_(descriptor.size_limit_),
      address_within_principal_mapping_(
          descriptor.address_within_principal_mapping_),
      skip_dump_if_principal_mapping_not_referenced_(
          descriptor.skip_dump_if_principal_mapping_not_referenced_),
      sanitize_stacks_(descriptor.sanitize_stacks_),
      microdump_extra_info_(descriptor.microdump_extra_info_) {
  // The copy constructor is not allowed to be called on a MinidumpDescriptor
  // with a valid path_, as getting its c_path_ would require the heap which
  // can cause problems in compromised environments.
  assert(descriptor.path_.empty());
}

MinidumpDescriptor& MinidumpDescriptor::operator=(
    const MinidumpDescriptor& descriptor) {
  assert(descriptor.path_.empty());

  mode_ = descriptor.mode_;
  fd_ = descriptor.fd_;
  directory_ = descriptor.directory_;
  path_.clear();
  if (c_path_) {
    // This descriptor already had a path set, so generate a new one.
    c_path_ = NULL;
    UpdatePath();
  }
  size_limit_ = descriptor.size_limit_;
  address_within_principal_mapping_ =
      descriptor.address_within_principal_mapping_;
  skip_dump_if_principal_mapping_not_referenced_ =
      descriptor.skip_dump_if_principal_mapping_not_referenced_;
  sanitize_stacks_ = descriptor.sanitize_stacks_;
  microdump_extra_info_ = descriptor.microdump_extra_info_;
  return *this;
}

void MinidumpDescriptor::UpdatePath() {
  assert(mode_ == kWriteMinidumpToFile && !directory_.empty());

  GUID guid;
  char guid_str[kGUIDStringLength + 1];
  if (!CreateGUID(&guid) || !GUIDToString(&guid, guid_str, sizeof(guid_str))) {
    assert(false);
  }

  path_.clear();
  path_ = directory_ + "/" + guid_str + ".dmp";
  c_path_ = path_.c_str();
}

}  // namespace google_breakpad