| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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| 2 | #ifndef _LINUX_MEMFD_H |
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| 3 | #define _LINUX_MEMFD_H |
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| 4 | |
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| 5 | #include <asm-generic/hugetlb_encode.h> |
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| 6 | |
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| 7 | /* flags for memfd_create(2) (unsigned int) */ |
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| 8 | #define MFD_CLOEXEC 0x0001U |
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| 9 | #define MFD_ALLOW_SEALING 0x0002U |
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| 10 | #define MFD_HUGETLB 0x0004U |
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| 11 | |
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| 12 | /* |
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| 13 | * Huge page size encoding when MFD_HUGETLB is specified, and a huge page |
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| 14 | * size other than the default is desired. See hugetlb_encode.h. |
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| 15 | * All known huge page size encodings are provided here. It is the |
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| 16 | * responsibility of the application to know which sizes are supported on |
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| 17 | * the running system. See mmap(2) man page for details. |
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| 18 | */ |
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| 19 | #define MFD_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT |
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| 20 | #define MFD_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK |
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| 21 | |
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| 22 | #define MFD_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB |
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| 23 | #define MFD_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB |
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| 24 | #define MFD_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB |
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| 25 | #define MFD_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB |
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| 26 | #define MFD_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB |
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| 27 | #define MFD_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB |
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| 28 | #define MFD_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB |
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| 29 | #define MFD_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB |
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| 30 | #define MFD_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB |
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| 31 | #define MFD_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB |
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| 32 | #define MFD_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB |
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| 33 | #define MFD_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB |
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| 34 | |
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| 35 | #endif /* _LINUX_MEMFD_H */ |
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| 36 | |
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