merge patch from Daniel Hartwig to Show a error message if {,dist-}upgrade is used...

[apt.git] / apt-pkg / contrib / mmap.cc

diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index 3e6ef3520d2520705ec8eb5aae82b6bb7bc8d51b..a176da6368fcb97562968775305c173b30c13c85 100644 (file)
--- a/apt-pkg/contrib/mmap.cc
+++ b/apt-pkg/contrib/mmap.cc
@@ -156,11 +156,10 @@ bool MMap::Close(bool DoSync)
 /* This is done in syncronous mode - the docs indicate that this will 
    not return till all IO is complete */
 bool MMap::Sync()
-{   
+{
    if ((Flags & UnMapped) == UnMapped)
       return true;
-   
-#ifdef _POSIX_SYNCHRONIZED_IO   
+
    if ((Flags & ReadOnly) != ReadOnly)
    {
       if (SyncToFd != NULL)
@@ -170,11 +169,12 @@ bool MMap::Sync()
       }
       else
       {
+#ifdef _POSIX_SYNCHRONIZED_IO
         if (msync((char *)Base, iSize, MS_SYNC) < 0)
            return _error->Errno("msync", _("Unable to synchronize mmap"));
+#endif
       }
    }
-#endif   
    return true;
 }
                                                                        /*}}}*/
@@ -185,9 +185,7 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop)
 {
    if ((Flags & UnMapped) == UnMapped)
       return true;
-   
-#ifdef _POSIX_SYNCHRONIZED_IO
-   unsigned long long PSize = sysconf(_SC_PAGESIZE);
+
    if ((Flags & ReadOnly) != ReadOnly)
    {
       if (SyncToFd != 0)
@@ -198,11 +196,13 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop)
       }
       else
       {
+#ifdef _POSIX_SYNCHRONIZED_IO
+        unsigned long long const PSize = sysconf(_SC_PAGESIZE);
         if (msync((char *)Base+(unsigned long long)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0)
            return _error->Errno("msync", _("Unable to synchronize mmap"));
+#endif
       }
    }
-#endif   
    return true;
 }
                                                                        /*}}}*/