Merge remote branch 'goog/dalvik-dev' into dalvik-dev-to-master

Change-Id: I0c0edb3ebf0d5e040d6bbbf60269fab0deb70ef9
diff --git a/libdex/SysUtil.h b/libdex/SysUtil.h
index 95e5be2..01b4e1a 100644
--- a/libdex/SysUtil.h
+++ b/libdex/SysUtil.h
@@ -106,4 +106,11 @@
  */
 void sysReleaseShmem(MemMapping* pMap);
 
+/*
+ * Write until all bytes have been written.
+ *
+ * Returns 0 on success, or an errno value on failure.
+ */
+int sysWriteFully(int fd, const void* buf, size_t count, const char* logMsg);
+
 #endif /*_DALVIK_SYSUTIL*/