LibC: Implement dirfd().

LibC/dirent.cpp

@@ -1,14 +1,15 @@
-#include <dirent.h>
+#include <AK/Assertions.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-#include <unistd.h>
 #include <AK/StdLibExtras.h>
 #include <Kernel/Syscall.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <unistd.h>
 
 extern "C" {
 
@@ -85,5 +86,11 @@ dirent* readdir(DIR* dirp)
     return &dirp->cur_ent;
 }
 
+int dirfd(DIR* dirp)
+{
+    ASSERT(dirp);
+    return dirp->fd;
+}
+
 }
 

LibC/dirent.h

@@ -25,5 +25,6 @@ typedef struct __DIR DIR;
 DIR* opendir(const char* name);
 int closedir(DIR*);
 struct dirent* readdir(DIR*);
+int dirfd(DIR*);
 
 __END_DECLS