diff --git a/bindings/java/src/jni/generate.pl b/bindings/java/src/jni/generate.pl
index dbb531c1..6aaa2be0 100644
--- a/bindings/java/src/jni/generate.pl
+++ b/bindings/java/src/jni/generate.pl
@@ -586,6 +586,9 @@ my %classes = (
       {
          name => 'sockets', type => 'Long',
       },
+      {
+         name => 'disk_usage', type => 'Long',
+      },
     ],
     NetInfo => [
       {
diff --git a/bindings/java/src/net/hyperic/sigar/cmd/Watch.java b/bindings/java/src/net/hyperic/sigar/cmd/Watch.java
index 3592d964..944e9269 100644
--- a/bindings/java/src/net/hyperic/sigar/cmd/Watch.java
+++ b/bindings/java/src/net/hyperic/sigar/cmd/Watch.java
@@ -51,6 +51,7 @@ public class Watch {
             System.out.println("   Blkdevs....." + stats.getBlkdevs()); 
             System.out.println("   Sockets....." + stats.getSockets()); 
             System.out.println("   Total......." + stats.getTotal());
+            System.out.println("   Disk Usage.." + stats.getDiskUsage());
         }
     }
 
diff --git a/include/sigar_fileinfo.h b/include/sigar_fileinfo.h
index 0e379f5b..4356b8ce 100644
--- a/include/sigar_fileinfo.h
+++ b/include/sigar_fileinfo.h
@@ -110,6 +110,7 @@ typedef struct {
     sigar_uint64_t chrdevs;
     sigar_uint64_t blkdevs;
     sigar_uint64_t sockets;
+    sigar_uint64_t disk_usage;
 } sigar_dir_stat_t;
 
 SIGAR_DECLARE(const char *)
diff --git a/src/sigar_fileinfo.c b/src/sigar_fileinfo.c
index ecfca9c2..c3a43582 100644
--- a/src/sigar_fileinfo.c
+++ b/src/sigar_fileinfo.c
@@ -634,6 +634,8 @@ int sigar_dir_stat_get(sigar_t *sigar,
             continue;
         }
 
+        dirstats->disk_usage += info.st_size;
+
         switch (filetype_from_mode(info.st_mode)) {
           case SIGAR_FILETYPE_REG:
             ++dirstats->files;