1*580ea358SJohn Hubbard /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*580ea358SJohn Hubbard #ifndef _LINUX_MEMFD_H 3*580ea358SJohn Hubbard #define _LINUX_MEMFD_H 4*580ea358SJohn Hubbard 5*580ea358SJohn Hubbard #include <asm-generic/hugetlb_encode.h> 6*580ea358SJohn Hubbard 7*580ea358SJohn Hubbard /* flags for memfd_create(2) (unsigned int) */ 8*580ea358SJohn Hubbard #define MFD_CLOEXEC 0x0001U 9*580ea358SJohn Hubbard #define MFD_ALLOW_SEALING 0x0002U 10*580ea358SJohn Hubbard #define MFD_HUGETLB 0x0004U 11*580ea358SJohn Hubbard /* not executable and sealed to prevent changing to executable. */ 12*580ea358SJohn Hubbard #define MFD_NOEXEC_SEAL 0x0008U 13*580ea358SJohn Hubbard /* executable */ 14*580ea358SJohn Hubbard #define MFD_EXEC 0x0010U 15*580ea358SJohn Hubbard 16*580ea358SJohn Hubbard /* 17*580ea358SJohn Hubbard * Huge page size encoding when MFD_HUGETLB is specified, and a huge page 18*580ea358SJohn Hubbard * size other than the default is desired. See hugetlb_encode.h. 19*580ea358SJohn Hubbard * All known huge page size encodings are provided here. It is the 20*580ea358SJohn Hubbard * responsibility of the application to know which sizes are supported on 21*580ea358SJohn Hubbard * the running system. See mmap(2) man page for details. 22*580ea358SJohn Hubbard */ 23*580ea358SJohn Hubbard #define MFD_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT 24*580ea358SJohn Hubbard #define MFD_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK 25*580ea358SJohn Hubbard 26*580ea358SJohn Hubbard #define MFD_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB 27*580ea358SJohn Hubbard #define MFD_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB 28*580ea358SJohn Hubbard #define MFD_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB 29*580ea358SJohn Hubbard #define MFD_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB 30*580ea358SJohn Hubbard #define MFD_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB 31*580ea358SJohn Hubbard #define MFD_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB 32*580ea358SJohn Hubbard #define MFD_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB 33*580ea358SJohn Hubbard #define MFD_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB 34*580ea358SJohn Hubbard #define MFD_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB 35*580ea358SJohn Hubbard #define MFD_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB 36*580ea358SJohn Hubbard #define MFD_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB 37*580ea358SJohn Hubbard #define MFD_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB 38*580ea358SJohn Hubbard 39*580ea358SJohn Hubbard #endif /* _LINUX_MEMFD_H */ 40