1 #ifndef _UAPI_LINUX_MEMFD_H
2 #define _UAPI_LINUX_MEMFD_H
4 #include <asm-generic/hugetlb_encode.h>
6 /* flags for memfd_create(2) (unsigned int) */
7 #define MFD_CLOEXEC 0x0001U
8 #define MFD_ALLOW_SEALING 0x0002U
9 #define MFD_HUGETLB 0x0004U
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.
18 #define MFD_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT
19 #define MFD_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK
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
32 #endif /* _UAPI_LINUX_MEMFD_H */