ITS#10296 lmdb: fix fdatasync on MacOS

Patch from kero, with corrections by hyc

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 8ffb47c1a6032f278b5a1493a119f6aea92eb1b0..7d66b6cca34e6948bfe04ba7f47707e8cbf6ee43 100644 (file)
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -167,7 +167,11 @@ typedef SSIZE_T    ssize_t;
 # if !(defined(MDB_USE_POSIX_MUTEX) || defined(MDB_USE_POSIX_SEM))
 # define MDB_USE_SYSV_SEM      1
 # endif
+# if defined(__APPLE__)
+# define MDB_FDATASYNC(fd)             fcntl(fd, F_FULLSYNC)
+# else
 # define MDB_FDATASYNC         fsync
+# endif
 #elif defined(__ANDROID__)
 # define MDB_FDATASYNC         fsync
 #endif
@@ -2883,7 +2887,7 @@ mdb_env_sync0(MDB_env *env, int force, pgno_t numpgs)
                                ? MS_ASYNC : MS_SYNC;
                        if (MDB_MSYNC(env->me_map, env->me_psize * numpgs, flags))
                                rc = ErrCode();
-#ifdef _WIN32
+#if defined(_WIN32) || defined(__APPLE__)
                        else if (flags == MS_SYNC && MDB_FDATASYNC(env->me_fd))
                                rc = ErrCode();
 #endif