r15750@catbus: nickm | 2007-10-13 20:06:47 -0400

 Eventually delete the obsolete cached-routers and cached-routers.new files, so they don't sit around on disk forever.


svn:r11918

1 files changed, 17 insertions, 0 deletions

diff --git a/src/or/config.c b/src/or/config.c
index 4b548e3392..0bf88b2e44 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -4526,6 +4526,23 @@ or_state_save(time_t now)
   return 0;
 }
 
+/** Given a file name check to see whether the file exists but has not been
+ * modified for a very long time.  If so, remove it. */
+void
+remove_file_if_very_old(const char *fname, time_t now)
+{
+#define VERY_OLD_FILE_AGE (28*24*60*60)
+  struct stat st;
+
+  if (stat(fname, &st)==0 && st.st_mtime < now-VERY_OLD_FILE_AGE) {
+    char buf[ISO_TIME_LEN+1];
+    format_local_iso_time(buf, st.st_mtime);
+    log_notice(LD_GENERAL, "Obsolete file %s hasn't been modified since %s. "
+               "Removing it.", fname, buf);
+    unlink(fname);
+  }
+}
+
 /** Helper to implement GETINFO functions about configuration variables (not
  * their values).  Given a "config/names" question, set *<b>answer</b> to a
  * new string describing the supported configuration variables and their