commit 08be8691f7ba5e522cbc000b1880941128ad5f8c
Author: Dmitry Shachnev <mitya57@gmail.com>
Date:   Fri Oct 23 21:21:38 2015 +0300

    Fix QStorageInfo on BSD4 systems
    
    - On NetBSD, the defines were not properly defined;
    - On all other BSD systems, we use statfs which does not have f_frsize
      member, revert to using f_bsize there.
    
    Task-number: QTBUG-48267
    Change-Id: Ia1ed484ac61a615fcbb5b45affb516b5e86a64b0
    Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
    Reviewed-by: Lisandro Damián Nicanor Pérez Meyer <perezmeyer@gmail.com>
    Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

--- src/corelib/io/qstorageinfo_unix.cpp
+++ src/corelib/io/qstorageinfo_unix.cpp
@@ -68,8 +68,8 @@
 
 #if defined(Q_OS_BSD4)
 #  if defined(Q_OS_NETBSD)
-     define QT_STATFSBUF struct statvfs
-     define QT_STATFS    ::statvfs
+#    define QT_STATFSBUF struct statvfs
+#    define QT_STATFS    ::statvfs
 #  else
 #    define QT_STATFSBUF struct statfs
 #    define QT_STATFS    ::statfs
@@ -506,9 +506,15 @@ void QStorageInfoPrivate::retrieveVolumeInfo()
         valid = true;
         ready = true;
 
+#if defined(Q_OS_BSD4) && !defined(Q_OS_NETBSD)
+        bytesTotal = statfs_buf.f_blocks * statfs_buf.f_bsize;
+        bytesFree = statfs_buf.f_bfree * statfs_buf.f_bsize;
+        bytesAvailable = statfs_buf.f_bavail * statfs_buf.f_bsize;
+#else
         bytesTotal = statfs_buf.f_blocks * statfs_buf.f_frsize;
         bytesFree = statfs_buf.f_bfree * statfs_buf.f_frsize;
         bytesAvailable = statfs_buf.f_bavail * statfs_buf.f_frsize;
+#endif
 #if defined(Q_OS_ANDROID) || defined (Q_OS_BSD4)
 #if defined(_STATFS_F_FLAGS)
         readOnly = (statfs_buf.f_flags & ST_RDONLY) != 0;