diff --git a/src/kernel/emulation/linux/fcntl/fcntl.c b/src/kernel/emulation/linux/fcntl/fcntl.c
index e222ba71f..53ef8c24d 100644
--- a/src/kernel/emulation/linux/fcntl/fcntl.c
+++ b/src/kernel/emulation/linux/fcntl/fcntl.c
@@ -73,6 +73,11 @@ long sys_fcntl_nocancel(int fd, int cmd, long arg)
 
 			return 0;
 		}
+		case F_SETLK:
+		case F_SETLKW:
+		case F_GETLK:
+			// TODO
+			return 0;
 		// TODO: implement remaining commands
 		default:
 			return -EINVAL;
diff --git a/src/kernel/emulation/linux/fcntl/fcntl.h b/src/kernel/emulation/linux/fcntl/fcntl.h
index 19f5d68ed..54ddf103c 100644
--- a/src/kernel/emulation/linux/fcntl/fcntl.h
+++ b/src/kernel/emulation/linux/fcntl/fcntl.h
@@ -46,6 +46,18 @@ enum {
 	F_GETPATH = 50,
 };
 
+enum {
+	LINUX_F_RDLCK = 0,
+	LINUX_F_WRLCK,
+	LINUX_F_UNLCK,
+};
+
+enum {
+	F_RDLCK = 1,
+	F_UNLCK,
+	F_WRLCK,
+};
+
 #ifndef FD_CLOEXEC
 #   define FD_CLOEXEC 1
 #endif