Check for symlinks before attempting create.

src/lxc/conf.c

@@ -828,6 +828,7 @@ static int setup_dev_symlinks(const struct lxc_rootfs *rootfs)
 {
 	char path[MAXPATHLEN];
 	int ret,i;
+	struct stat s;
 
 
 	for (i = 0; i < sizeof(dev_symlinks) / sizeof(dev_symlinks[0]); i++) {
@@ -835,12 +836,26 @@ static int setup_dev_symlinks(const struct lxc_rootfs *rootfs)
 		ret = snprintf(path, sizeof(path), "%s/dev/%s", rootfs->mount, d->name);
 		if (ret < 0 || ret >= MAXPATHLEN)
 			return -1;
+
+		/*
+		 * Stat the path first.  If we don't get an error
+		 * accept it as is and don't try to create it
+		 */
+		if (!stat(path, &s)) {
+			continue;
+		}
+
 		ret = symlink(d->oldpath, path);
+
 		if (ret && errno != EEXIST) {
+			if ( errno == EROFS ) {
+				WARN("Warning: Read Only file system while creating %s", path);
+			} else {
 				SYSERROR("Error creating %s", path);
 				return -1;
 			}
 		}
+	}
 	return 0;
 }