Corrected some larger read/write issues in corner cases that I hit suprisingly

often within nids.  There's still a problem somewhere, but I'll find it.

Also, even after having the file class canRead and canWrite functions work
properly, and using them before trying to write to a nids to update info, we
never ever write anything, so something is still wrong there.  For now, all
utilities that open a nids stream read-only will crash when it closes.  Pretty
minor really.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/file.cpp b/src/file.cpp
index 7c18a06..20ff5c9 100644
--- a/src/file.cpp
+++ b/src/file.cpp
@@ -110,12 +110,20 @@ bool Bu::File::isEOS()
 
 bool Bu::File::canRead()
 {
+#ifdef WIN32
         return true;
+#else
+        return (fcntl( fd, F_GETFL, 0 )&O_RDONLY) == O_RDONLY;
+#endif
 }
 
 bool Bu::File::canWrite()
 {
+#ifdef WIN32
         return true;
+#else
+        return (fcntl( fd, F_GETFL, 0 )&O_WRONLY) == O_WRONLY;
+#endif
 }
 
 bool Bu::File::isReadable()