From: teor <teor2345@gmail.com>
Date: Sun, 28 May 2017 12:16:00 +0000 (+1000)
Subject: Don't underflow usage when it is unknown and a file is removed
X-Git-Tag: tor-0.3.1.3-alpha~23^2~3
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=334fe6bb6b124c2f3eb1186610999446d57cde76;p=thirdparty%2Ftor.git

Don't underflow usage when it is unknown and a file is removed

Part of #22424.
---

diff --git a/src/common/storagedir.c b/src/common/storagedir.c
index 9140ed29bd..532fa2a2c8 100644
--- a/src/common/storagedir.c
+++ b/src/common/storagedir.c
@@ -425,7 +425,7 @@ storage_dir_remove_file(storage_dir_t *d,
     }
   }
   if (unlink(ipath) == 0) {
-    if (! BUG(d->usage < size)) {
+    if (d->usage_known && ! BUG(d->usage < size)) {
       d->usage -= size;
     }
   } else {