X-Git-Url: http://git.megacz.com/?p=nestedvm.git;a=blobdiff_plain;f=src%2Forg%2Fibex%2Fnestedvm%2FRuntime.java;h=6675d59c30d483e0d090c5f98f62ac7b97b31efe;hp=fd2b98518324d7a8442535d59160bdd0c9b85e41;hb=ae52817e5cb153f781b76f5d525e127f217b5482;hpb=c2b2704764af1ade923ba8f15d517b87f9d16189

diff --git a/src/org/ibex/nestedvm/Runtime.java b/src/org/ibex/nestedvm/Runtime.java
index fd2b985..6675d59 100644
--- a/src/org/ibex/nestedvm/Runtime.java
+++ b/src/org/ibex/nestedvm/Runtime.java
@@ -626,6 +626,17 @@ public abstract class Runtime implements UsermodeConstants,Registers {
         fds[fdn] = null;        
         return true;
     }
+    
+    /** Duplicates the file descriptor <i>fdn</i> and returns the new fs */
+    public int dupFD(int fdn) {
+    		int i;
+    		if(fdn < 0 || fdn >= OPEN_MAX) return -1;
+    		if(fds[fdn] == null) return -1;
+    		for(i=0;i<OPEN_MAX;i++) if(fds[i] == null) break;
+        if(i==OPEN_MAX) return -1;
+        fds[i] = fds[fdn].dup();
+        return i;
+    }
 
     // FEATURE: These should be pulled in from UsermodeConstants but fcntl.h is hard to parse
     public static final int RD_ONLY = 0;