AU: Catch terminate signals and block exit if necessary.

generate_delta_main.cc

 // 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 <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <unistd.h>
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include <base/command_line.h>
 #include <base/logging.h>
 #include <gflags/gflags.h>
 #include <glib.h>
 
 #include "update_engine/delta_diff_generator.h"
 #include "update_engine/delta_performer.h"
 #include "update_engine/prefs.h"
 #include "update_engine/subprocess.h"
+#include "update_engine/terminator.h"
 #include "update_engine/update_metadata.pb.h"
 #include "update_engine/utils.h"
 
 DEFINE_string(old_dir, "",
               "Directory where the old rootfs is loop mounted read-only");
 DEFINE_string(new_dir, "",
               "Directory where the new rootfs is loop mounted read-only");
 DEFINE_string(old_image, "", "Path to the old rootfs");
 DEFINE_string(new_image, "", "Path to the new rootfs");
 DEFINE_string(out_file, "", "Path to output file");
@@ skipping 20 matching lines @@
 bool IsDir(const char* path) {
   struct stat stbuf;
   TEST_AND_RETURN_FALSE_ERRNO(lstat(path, &stbuf) == 0);
   return S_ISDIR(stbuf.st_mode);
 }
 
 int Main(int argc, char** argv) {
   g_thread_init(NULL);
   google::ParseCommandLineFlags(&argc, &argv, true);
   CommandLine::Init(argc, argv);
+  Terminator::Init();
   Subprocess::Init();
   logging::InitLogging("delta_generator.log",
                        logging::LOG_ONLY_TO_SYSTEM_DEBUG_LOG,
                        logging::DONT_LOCK_LOG_FILE,
                        logging::APPEND_TO_OLD_LOG_FILE);
   if (!FLAGS_apply_delta.empty()) {
     if (FLAGS_old_image.empty()) {
       LOG(FATAL) << "Must pass --old_image with --apply_delta.";
     }
     Prefs prefs;
@@ skipping 41 matching lines @@
   return 0;
 }
 
 }  // namespace {}
 
 }  // namespace chromeos_update_engine
 
 int main(int argc, char** argv) {
   return chromeos_update_engine::Main(argc, argv);
 }