// SPDX-License-Identifier: GPL-2.0-only OR MIT
/*
 * Copyright (C) 2023 The Falco Authors.
 *
 * This file is dual licensed under either the MIT or GPL 2. See MIT.txt
 * or GPL2.txt for full copies of the license.
 */

#include <helpers/interfaces/fixed_size_event.h>
#include <helpers/interfaces/variable_size_event.h>

/*=============================== EXIT EVENT ===========================*/

SEC("tp_btf/sys_exit")
int BPF_PROG(memfd_create_x, struct pt_regs *regs, long ret) {
	struct auxiliary_map *auxmap = auxmap__get();
	if(!auxmap) {
		return 0;
	}

	auxmap__preload_event_header(auxmap, PPME_SYSCALL_MEMFD_CREATE_X);

	/*=============================== COLLECT PARAMETERS  ===========================*/

	/* Parameter 1: ret (type: PT_FD) */
	auxmap__store_s64_param(auxmap, ret);

	/* Parameter 2: file name (type: PT_CHARBUF)  */
	unsigned long name_pointer = extract__syscall_argument(regs, 0);
	auxmap__store_charbuf_param(auxmap, name_pointer, MAX_PATH, USER);

	/* Parameter 3: flags (type: PT_FLAGS32) */
	uint32_t flags = (uint32_t)extract__syscall_argument(regs, 1);
	auxmap__store_u32_param(auxmap, memfd_create_flags_to_scap(flags));
	/*=============================== COLLECT PARAMETERS  ===========================*/

	auxmap__finalize_event_header(auxmap);

	auxmap__submit_event(auxmap);

	return 0;
}

/*=============================== EXIT EVENT ===========================*/
