Current File : //usr/src/linux-headers-5.15.0-125-generic/include/uapi/linux/memfd.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_LINUX_MEMFD_H
#define _UAPI_LINUX_MEMFD_H
#include <asm-generic/hugetlb_encode.h>
/* flags for memfd_create(2) (unsigned int) */
#define MFD_CLOEXEC 0x0001U
#define MFD_ALLOW_SEALING 0x0002U
#define MFD_HUGETLB 0x0004U
/*
* Huge page size encoding when MFD_HUGETLB is specified, and a huge page
* size other than the default is desired. See hugetlb_encode.h.
* All known huge page size encodings are provided here. It is the
* responsibility of the application to know which sizes are supported on
* the running system. See mmap(2) man page for details.
*/
#define MFD_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT
#define MFD_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK
#define MFD_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB
#define MFD_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB
#define MFD_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB
#define MFD_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
#define MFD_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
#define MFD_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
#define MFD_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB
#define MFD_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
#define MFD_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB
#define MFD_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
#define MFD_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
#define MFD_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB
#endif /* _UAPI_LINUX_MEMFD_H */
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