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base/file_util_posix.cc

Index: base/file_util_posix.cc
diff --git a/base/file_util_posix.cc b/base/file_util_posix.cc
index 4d4e5721b47edf9a3cda00285bb5a980c0fad597..d9cbe0945e75fe3be45dd380affcf445c0051a25 100644
--- a/base/file_util_posix.cc
+++ b/base/file_util_posix.cc
@@ -401,22 +401,41 @@ bool CreateTemporaryFileInDir(const FilePath& dir, FilePath* temp_file) {
   return ((fd >= 0) && !close(fd));
 }
 
-bool CreateNewTempDirectory(const FilePath::StringType& prefix,
-                            FilePath* new_temp_path) {
-  FilePath tmpdir;
-  if (!GetTempDir(&tmpdir))
-    return false;
-  tmpdir = tmpdir.Append(kTempFileName);
-  std::string tmpdir_string = tmpdir.value();
+static bool CreateTemporaryDirInDirImpl(const FilePath& base_dir,
+                                        const FilePath::StringType& name_tmpl,
+                                        FilePath* new_dir) {
+  CHECK(name_tmpl.find("XXXXXX") != FilePath::StringType::npos)
+    << "Directory name template must contain \"XXXXXX\".";
+
+  FilePath sub_dir = base_dir.Append(name_tmpl);
+  std::string sub_dir_string = sub_dir.value();
+
   // this should be OK since mkdtemp just replaces characters in place
-  char* buffer = const_cast<char*>(tmpdir_string.c_str());
+  char* buffer = const_cast<char*>(sub_dir_string.c_str());
   char* dtemp = mkdtemp(buffer);
   if (!dtemp)
     return false;
-  *new_temp_path = FilePath(dtemp);
+  *new_dir = FilePath(dtemp);
   return true;
 }
 
+bool CreateTemporaryDirInDir(const FilePath& base_dir,
+                             const FilePath::StringType& prefix,
+                             FilePath* new_dir) {
+  FilePath::StringType mkdtemp_template = prefix;
+  mkdtemp_template.append(FILE_PATH_LITERAL("XXXXXX"));
+  return CreateTemporaryDirInDirImpl(base_dir, mkdtemp_template, new_dir);
+}
+
+bool CreateNewTempDirectory(const FilePath::StringType& prefix,
+                            FilePath* new_temp_path) {
+  FilePath tmpdir;
+  if (!GetTempDir(&tmpdir))
+    return false;
+
+  return CreateTemporaryDirInDirImpl(tmpdir, kTempFileName, new_temp_path);
+}
+
 bool CreateDirectory(const FilePath& full_path) {
   std::vector<FilePath> subpaths;