--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/fdbuf/fdobuf_seek.cc	Wed Jan 16 22:39:43 2008 +0100
@@ -0,0 +1,48 @@
+// Copyright (C) 1999,2000 Bruce Guenter <bruceg@em.ca>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+#include "fdbuf.h"
+#include <errno.h>
+#include <unistd.h>
+
+bool fdobuf::seek(unsigned o)
+{
+  if(flags)
+    return false;
+
+  lock();
+  unsigned buf_start = offset;
+  unsigned buf_end = offset + buflength;
+  if(o >= buf_start && o < buf_end) {
+    bufpos = o - buf_start;
+  }
+  else {
+    if(!nflush(false)) {
+      unlock();
+      return false;
+    }
+    if(lseek(fd, o, SEEK_SET) != (off_t)o) {
+      errnum = errno;
+      flags |= flag_error;
+      unlock();
+      return false;
+    }
+    offset = o;
+  }
+  count = 0;
+  unlock();
+  return true;
+}