1 #ifndef _UAPI_LINUX_MEMFD_H 2 #define _UAPI_LINUX_MEMFD_H 3 4 #include <asm-generic/hugetlb_encode.h> 5 6 /* flags for memfd_create(2) (unsigned int) */ 7 #define MFD_CLOEXEC 0x0001U 8 #define MFD_ALLOW_SEALING 0x0002U 9 #define MFD_HUGETLB 0x0004U 10 11 /* 12 * Huge page size encoding when MFD_HUGETLB is specified, and a huge page 13 * size other than the default is desired. See hugetlb_encode.h. 14 * All known huge page size encodings are provided here. It is the 15 * responsibility of the application to know which sizes are supported on 16 * the running system. See mmap(2) man page for details. 17 */ 18 #define MFD_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT 19 #define MFD_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK 20 21 #define MFD_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB 22 #define MFD_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB 23 #define MFD_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB 24 #define MFD_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB 25 #define MFD_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB 26 #define MFD_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB 27 #define MFD_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB 28 #define MFD_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB 29 #define MFD_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB 30 #define MFD_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB 31 32 #endif /* _UAPI_LINUX_MEMFD_H */ 33