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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2#ifndef _UAPI_LINUX_MEMFD_H3#define _UAPI_LINUX_MEMFD_H4 5#include <asm-generic/hugetlb_encode.h>6 7/* flags for memfd_create(2) (unsigned int) */8#define MFD_CLOEXEC 0x0001U9#define MFD_ALLOW_SEALING 0x0002U10#define MFD_HUGETLB 0x0004U11/* not executable and sealed to prevent changing to executable. */12#define MFD_NOEXEC_SEAL 0x0008U13/* executable */14#define MFD_EXEC 0x0010U15 16/*17 * Huge page size encoding when MFD_HUGETLB is specified, and a huge page18 * size other than the default is desired. See hugetlb_encode.h.19 * All known huge page size encodings are provided here. It is the20 * responsibility of the application to know which sizes are supported on21 * the running system. See mmap(2) man page for details.22 */23#define MFD_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT24#define MFD_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK25 26#define MFD_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB27#define MFD_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB28#define MFD_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB29#define MFD_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB30#define MFD_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB31#define MFD_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB32#define MFD_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB33#define MFD_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB34#define MFD_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB35#define MFD_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB36#define MFD_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB37#define MFD_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB38 39#endif /* _UAPI_LINUX_MEMFD_H */40