1 files changed, 34 insertions, 0 deletions
diff --git a/include/lume/clone.h b/include/lume/clone.h
new file mode 100644
index 0000000..156bae4
--- /dev/null
+++ b/include/lume/clone.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 2026 Richard Qin */
+
+#pragma once
+
+/*
+ * Linux-compatible clone(2) flags.
+ *
+ * Only the flags relevant to current and near-future use are defined.
+ * Reference: include/uapi/linux/sched.h
+ */
+
+#include <lume/types.h>
+
+/* Signal mask stored in low byte of clone flags */
+inline constexpr uint64 CSIGNAL = 0x000000ffULL;
+
+/* Sharing flags */
+inline constexpr uint64 CLONE_VM             = 0x00000100ULL; // Share address space
+inline constexpr uint64 CLONE_FS             = 0x00000200ULL; // Share fs info
+inline constexpr uint64 CLONE_FILES          = 0x00000400ULL; // Share file descriptors
+inline constexpr uint64 CLONE_SIGHAND        = 0x00000800ULL; // Share signal handlers
+inline constexpr uint64 CLONE_PIDFD          = 0x00001000ULL; // pidfd
+inline constexpr uint64 CLONE_PTRACE         = 0x00002000ULL; // Trace child
+inline constexpr uint64 CLONE_VFORK          = 0x00004000ULL; // Parent blocks until child exits/execs
+inline constexpr uint64 CLONE_PARENT         = 0x00008000ULL; // Same parent as cloner
+inline constexpr uint64 CLONE_THREAD         = 0x00010000ULL; // Same thread group
+inline constexpr uint64 CLONE_NEWNS          = 0x00020000ULL; // New mount namespace
+inline constexpr uint64 CLONE_SYSVSEM        = 0x00040000ULL; // Share SysV semaphore undo
+inline constexpr uint64 CLONE_SETTLS         = 0x00080000ULL; // Set TLS
+inline constexpr uint64 CLONE_PARENT_SETTID  = 0x00100000ULL; // Write TID to parent
+inline constexpr uint64 CLONE_CHILD_CLEARTID = 0x00200000ULL; // Clear TID on child exit
+inline constexpr uint64 CLONE_DETACHED       = 0x00400000ULL; // Unused, historical
+inline constexpr uint64 CLONE_CHILD_SETTID   = 0x01000000ULL; // Write TID to child