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 void *qemu_memfd_alloc(const char *name, size_t size, unsigned int seals, 20 int *fd); 21 void qemu_memfd_free(void *ptr, size_t size, int fd); 22 bool qemu_memfd_check(void); 23 24 #endif /* QEMU_MEMFD_H */ 25