From 0067832fa6c7b190fc1e806f1cff6f4941a2270d Mon Sep 17 00:00:00 2001
From: Joel Rosdahl <joel@rosdahl.net>
Date: Thu, 4 Aug 2022 20:01:40 +0200
Subject: enhance: Support Stat::{atim,ctim,mtim} on macOS

(cherry picked from commit bcdaeb5c6082717bac984ab2ffafd0bdee552458)
---
 cmake/GenerateConfigurationFile.cmake |  6 ++++++
 cmake/config.h.in                     |  9 +++++++++
 src/InodeCache.cpp                    | 18 +-----------------
 src/Stat.hpp                          |  6 ++++++
 unittest/test_Stat.cpp                |  6 ++++++
 5 files changed, 28 insertions(+), 17 deletions(-)

diff --git a/cmake/GenerateConfigurationFile.cmake b/cmake/GenerateConfigurationFile.cmake
index 5d106ff9..8e2c2202 100644
--- a/cmake/GenerateConfigurationFile.cmake
+++ b/cmake/GenerateConfigurationFile.cmake
@@ -68,6 +68,12 @@ check_struct_has_member("struct stat" st_ctim sys/stat.h
                         HAVE_STRUCT_STAT_ST_CTIM LANGUAGE CXX)
 check_struct_has_member("struct stat" st_mtim sys/stat.h
                         HAVE_STRUCT_STAT_ST_MTIM LANGUAGE CXX)
+check_struct_has_member("struct stat" st_atimespec sys/stat.h
+                        HAVE_STRUCT_STAT_ST_ATIMESPEC LANGUAGE CXX)
+check_struct_has_member("struct stat" st_ctimespec sys/stat.h
+                        HAVE_STRUCT_STAT_ST_CTIMESPEC LANGUAGE CXX)
+check_struct_has_member("struct stat" st_mtimespec sys/stat.h
+                        HAVE_STRUCT_STAT_ST_MTIMESPEC LANGUAGE CXX)
 check_struct_has_member("struct statfs" f_fstypename sys/mount.h
                         HAVE_STRUCT_STATFS_F_FSTYPENAME LANGUAGE CXX)
 
diff --git a/cmake/config.h.in b/cmake/config.h.in
index e5cd5e7b..f575c53f 100644
--- a/cmake/config.h.in
+++ b/cmake/config.h.in
@@ -124,6 +124,15 @@
 // Define if "st_mtim" is a member of "struct stat".
 #cmakedefine HAVE_STRUCT_STAT_ST_MTIM
 
+// Define if "st_atimespec" is a member of "struct stat".
+#cmakedefine HAVE_STRUCT_STAT_ST_ATIMESPEC
+
+// Define if "st_ctimespec" is a member of "struct stat".
+#cmakedefine HAVE_STRUCT_STAT_ST_CTIMESPEC
+
+// Define if "st_mtimespec" is a member of "struct stat".
+#cmakedefine HAVE_STRUCT_STAT_ST_MTIMESPEC
+
 // Define if you have the "syslog" function.
 #cmakedefine HAVE_SYSLOG
 
diff --git a/src/InodeCache.cpp b/src/InodeCache.cpp
index 15a33928..db411c35 100644
--- a/src/InodeCache.cpp
+++ b/src/InodeCache.cpp
@@ -90,17 +90,9 @@ struct InodeCache::Key
   dev_t st_dev;
   ino_t st_ino;
   mode_t st_mode;
-#ifdef HAVE_STRUCT_STAT_ST_MTIM
   timespec st_mtim;
-#else
-  time_t st_mtim;
-#endif
-#ifdef HAVE_STRUCT_STAT_ST_CTIM
   timespec st_ctim; // Included for sanity checking.
-#else
-  time_t st_ctim; // Included for sanity checking.
-#endif
-  off_t st_size; // Included for sanity checking.
+  off_t st_size;    // Included for sanity checking.
   bool sloppy_time_macros;
 };
 
@@ -188,16 +180,8 @@ InodeCache::hash_inode(const std::string& path,
   key.st_dev = stat.device();
   key.st_ino = stat.inode();
   key.st_mode = stat.mode();
-#ifdef HAVE_STRUCT_STAT_ST_MTIM
   key.st_mtim = stat.mtim();
-#else
-  key.st_mtim = stat.mtime();
-#endif
-#ifdef HAVE_STRUCT_STAT_ST_CTIM
   key.st_ctim = stat.ctim();
-#else
-  key.st_ctim = stat.ctime();
-#endif
   key.st_size = stat.size();
 
   Hash hash;
diff --git a/src/Stat.hpp b/src/Stat.hpp
index 53aed648..e31a6b13 100644
--- a/src/Stat.hpp
+++ b/src/Stat.hpp
@@ -270,6 +270,8 @@ Stat::atim() const
 {
 #if defined(_WIN32) || defined(HAVE_STRUCT_STAT_ST_ATIM)
   return m_stat.st_atim;
+#elif defined(HAVE_STRUCT_STAT_ST_ATIMESPEC)
+  return m_stat.st_atimespec;
 #else
   return {m_stat.st_atime, 0};
 #endif
@@ -280,6 +282,8 @@ Stat::ctim() const
 {
 #if defined(_WIN32) || defined(HAVE_STRUCT_STAT_ST_CTIM)
   return m_stat.st_ctim;
+#elif defined(HAVE_STRUCT_STAT_ST_CTIMESPEC)
+  return m_stat.st_ctimespec;
 #else
   return {m_stat.st_ctime, 0};
 #endif
@@ -290,6 +294,8 @@ Stat::mtim() const
 {
 #if defined(_WIN32) || defined(HAVE_STRUCT_STAT_ST_MTIM)
   return m_stat.st_mtim;
+#elif defined(HAVE_STRUCT_STAT_ST_CTIMESPEC)
+  return m_stat.st_mtimespec;
 #else
   return {m_stat.st_mtime, 0};
 #endif
diff --git a/unittest/test_Stat.cpp b/unittest/test_Stat.cpp
index 3a3586e2..a6e41b33 100644
--- a/unittest/test_Stat.cpp
+++ b/unittest/test_Stat.cpp
@@ -284,6 +284,9 @@ TEST_CASE("Return values when file exists")
 #  ifdef HAVE_STRUCT_STAT_ST_CTIM
   CHECK(stat.ctim().tv_sec == st.st_ctim.tv_sec);
   CHECK(stat.ctim().tv_nsec == st.st_ctim.tv_nsec);
+#  elif defined(HAVE_STRUCT_STAT_ST_CTIMESPEC)
+  CHECK(stat.ctim().tv_sec == st.st_ctimespec.tv_sec);
+  CHECK(stat.ctim().tv_nsec == st.st_ctimespec.tv_nsec);
 #  else
   CHECK(stat.ctim().tv_sec == st.st_ctime);
   CHECK(stat.ctim().tv_nsec == 0);
@@ -292,6 +295,9 @@ TEST_CASE("Return values when file exists")
 #  ifdef HAVE_STRUCT_STAT_ST_MTIM
   CHECK(stat.mtim().tv_sec == st.st_mtim.tv_sec);
   CHECK(stat.mtim().tv_nsec == st.st_mtim.tv_nsec);
+#  elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC)
+  CHECK(stat.mtim().tv_sec == st.st_mtimespec.tv_sec);
+  CHECK(stat.mtim().tv_nsec == st.st_mtimespec.tv_nsec);
 #  else
   CHECK(stat.mtim().tv_sec == st.st_mtime);
   CHECK(stat.mtim().tv_nsec == 0);
-- 
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