AU: Timestamp logs at startup.

utils.cc

 // Copyright (c) 2009 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 "update_engine/utils.h"
 
 #include <sys/mount.h>
 #include <sys/resource.h>
 #include <sys/stat.h>
 #include <sys/types.h>
@@ skipping 283 matching lines @@
     }
   }
   return ret;
 }
 
 bool FileExists(const char* path) {
   struct stat stbuf;
   return 0 == lstat(path, &stbuf);
 }
 
+bool IsSymlink(const char* path) {
+  struct stat stbuf;
+  return lstat(path, &stbuf) == 0 && S_ISLNK(stbuf.st_mode) != 0;
+}
+
 std::string TempFilename(string path) {
   static const string suffix("XXXXXX");
   CHECK(StringHasSuffix(path, suffix));
   do {
     string new_suffix;
     for (unsigned int i = 0; i < suffix.size(); i++) {
       int r = rand() % (26 * 2 + 10);  // [a-zA-Z0-9]
       if (r < 26)
         new_suffix.append(1, 'a' + r);
       else if (r < (26 * 2))
@@ skipping 198 matching lines @@
   int min = value - range / 2;
   int max = value + range - range / 2;
   return base::RandInt(min, max);
 }
 
 const char* const kStatefulPartition = "/mnt/stateful_partition";
 
 }  // namespace utils
 
 }  // namespace chromeos_update_engine