diff --git a/Utils.cpp b/Utils.cpp
index 92f25d9..656d706 100644
--- a/Utils.cpp
+++ b/Utils.cpp
@@ -193,13 +193,35 @@
 }
 
 status_t BindMount(const std::string& source, const std::string& target) {
-    if (::mount(source.c_str(), target.c_str(), "", MS_BIND, NULL)) {
+    if (UnmountTree(target) < 0) {
+        return -errno;
+    }
+    if (TEMP_FAILURE_RETRY(mount(source.c_str(), target.c_str(), nullptr, MS_BIND, nullptr)) < 0) {
         PLOG(ERROR) << "Failed to bind mount " << source << " to " << target;
         return -errno;
     }
     return OK;
 }
 
+status_t Symlink(const std::string& target, const std::string& linkpath) {
+    if (Unlink(linkpath) < 0) {
+        return -errno;
+    }
+    if (TEMP_FAILURE_RETRY(symlink(target.c_str(), linkpath.c_str())) < 0) {
+        PLOG(ERROR) << "Failed to create symlink " << linkpath << " to " << target;
+        return -errno;
+    }
+    return OK;
+}
+
+status_t Unlink(const std::string& linkpath) {
+    if (TEMP_FAILURE_RETRY(unlink(linkpath.c_str())) < 0 && errno != EINVAL && errno != ENOENT) {
+        PLOG(ERROR) << "Failed to unlink " << linkpath;
+        return -errno;
+    }
+    return OK;
+}
+
 bool FindValue(const std::string& raw, const std::string& key, std::string* value) {
     auto qual = key + "=\"";
     size_t start = 0;
@@ -800,7 +822,8 @@
 }
 
 status_t UnmountTree(const std::string& mountPoint) {
-    if (umount2(mountPoint.c_str(), MNT_DETACH)) {
+    if (TEMP_FAILURE_RETRY(umount2(mountPoint.c_str(), MNT_DETACH)) < 0 && errno != EINVAL &&
+        errno != ENOENT) {
         PLOG(ERROR) << "Failed to unmount " << mountPoint;
         return -errno;
     }