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-rw-r--r--apt-pkg/contrib/mmap.cc14
1 files changed, 7 insertions, 7 deletions
diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index 3e6ef3520..df7cd2a59 100644
--- 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;
}
/*}}}*/
@@ -185,8 +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)
{
@@ -198,11 +197,12 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop)
}
else
{
+#ifdef _POSIX_SYNCHRONIZED_IO
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;
}
/*}}}*/