1 | #ifndef QEMU_MEMFD_H |
2 | #define QEMU_MEMFD_H |
3 | |
4 | |
5 | #ifndef F_LINUX_SPECIFIC_BASE |
6 | #define F_LINUX_SPECIFIC_BASE 1024 |
7 | #endif |
8 | |
9 | #ifndef F_ADD_SEALS |
10 | #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) |
11 | #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) |
12 | |
13 | #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ |
14 | #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ |
15 | #define F_SEAL_GROW 0x0004 /* prevent file from growing */ |
16 | #define F_SEAL_WRITE 0x0008 /* prevent writes */ |
17 | #endif |
18 | |
19 | #ifndef MFD_CLOEXEC |
20 | #define MFD_CLOEXEC 0x0001U |
21 | #endif |
22 | |
23 | #ifndef MFD_ALLOW_SEALING |
24 | #define MFD_ALLOW_SEALING 0x0002U |
25 | #endif |
26 | |
27 | #ifndef MFD_HUGETLB |
28 | #define MFD_HUGETLB 0x0004U |
29 | #endif |
30 | |
31 | #ifndef MFD_HUGE_SHIFT |
32 | #define MFD_HUGE_SHIFT 26 |
33 | #endif |
34 | |
35 | int qemu_memfd_create(const char *name, size_t size, bool hugetlb, |
36 | uint64_t hugetlbsize, unsigned int seals, Error **errp); |
37 | bool qemu_memfd_alloc_check(void); |
38 | void *qemu_memfd_alloc(const char *name, size_t size, unsigned int seals, |
39 | int *fd, Error **errp); |
40 | void qemu_memfd_free(void *ptr, size_t size, int fd); |
41 | bool qemu_memfd_check(unsigned int flags); |
42 | |
43 | #endif /* QEMU_MEMFD_H */ |
44 | |