1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef _UAPI_LINUX_MEMFD_H |
3 | #define _UAPI_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 /* _UAPI_LINUX_MEMFD_H */ |
40 | |