From: Joel Rosdahl <joel@rosdahl.net>
Date: Thu, 4 Aug 2022 18:55:19 +0000 (+0200)
Subject: fix: Only enable inode cache if subsecond stat timestamps are available
X-Git-Tag: v4.7~122
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=879007ad0ced5373b314ac92590b665c072f814a;p=thirdparty%2Fccache.git

fix: Only enable inode cache if subsecond stat timestamps are available

If such fields are not available we risk false positive inode cache
hits.
---

diff --git a/cmake/GenerateConfigurationFile.cmake b/cmake/GenerateConfigurationFile.cmake
index e18b37955..1467850df 100644
--- a/cmake/GenerateConfigurationFile.cmake
+++ b/cmake/GenerateConfigurationFile.cmake
@@ -104,7 +104,7 @@ endif()
 # alias
 set(MTR_ENABLED "${ENABLE_TRACING}")
 
-if(HAVE_SYS_MMAN_H AND HAVE_PTHREAD_MUTEXATTR_SETPSHARED)
+if(HAVE_SYS_MMAN_H AND HAVE_PTHREAD_MUTEXATTR_SETPSHARED AND (HAVE_STRUCT_STAT_ST_MTIM OR HAVE_STRUCT_STAT_ST_MTIMESPEC))
   set(INODE_CACHE_SUPPORTED 1)
 endif()