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