Added locking support to Bu::File.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/stable/file.cpp b/src/stable/file.cpp
index 35933f1..a15f394 100644
--- a/src/stable/file.cpp
+++ b/src/stable/file.cpp
@@ -9,6 +9,7 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/file.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <time.h>
@@ -200,6 +201,21 @@ void Bu::File::setBlocking( bool bBlocking )
 #endif
 }
 
+bool Bu::File::canLock() const
+{
+    return true;
+}
+
+void Bu::File::lock( bool bExclusive )
+{
+    ::flock( fd, bExclusive?LOCK_EX:LOCK_SH );
+}
+
+void Bu::File::unlock()
+{
+    ::flock( fd, LOCK_UN );
+}
+
 Bu::File Bu::File::tempFile( Bu::String &sName )
 {
     int iXes;