| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| #ifndef _LINUX_MEMFD_H |
| #define _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 |
| /* not executable and sealed to prevent changing to executable. */ |
| #define MFD_NOEXEC_SEAL 0x0008U |
| /* executable */ |
| #define MFD_EXEC 0x0010U |
| |
| /* |
| * 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 /* _LINUX_MEMFD_H */ |
