Start work on tests for Cumulus.

[cumulus.git] / util.cc

diff --git a/util.cc b/util.cc
index a51fa3d..a7479fc 100644 (file)
--- a/util.cc
+++ b/util.cc
@@ -1,11 +1,29 @@
-/* LBS: An LFS-inspired filesystem backup system
- * Copyright (C) 2007  Michael Vrable
+/* Cumulus: Efficient Filesystem Backup to the Cloud
+ * Copyright (C) 2007-2008 The Cumulus Developers
+ * See the AUTHORS file for a list of contributors.
  *
- * Utility functions for converting various datatypes to text format (and
- * later, for parsing them back, perhaps).
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+/* Utility functions for converting various datatypes to text format (and
+ * later, for parsing them back, perhaps). */
+
 #include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
 #include <uuid/uuid.h>
 
 #include <iostream>
@@ -99,12 +117,20 @@ long long parse_int(const string &s)
     return strtoll(s.c_str(), NULL, 0);
 }
 
-/* Output a dictionary of string key/value pairs to the given output stream.
- * The format is a sequence of lines of the form "key: value". */
-void dict_output(ostream &o, map<string, string> dict)
+/* Mark a file descriptor as close-on-exec. */
+void cloexec(int fd)
 {
-    for (map<string, string>::const_iterator i = dict.begin();
-         i != dict.end(); ++i) {
-        o << i->first << ": " << i->second << "\n";
-    }
+    long flags = fcntl(fd, F_GETFD);
+
+    if (flags < 0)
+        return;
+
+    fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
+}
+
+/* Report a fatal error and exit. */
+void fatal(string msg)
+{
+    fprintf(stderr, "FATAL: %s\n", msg.c_str());
+    exit(1);
 }