1 #ifndef QEMU_MEMFD_H 2 #define QEMU_MEMFD_H 3 4 #include "config-host.h" 5 #include <stdbool.h> 6 7 #ifndef F_LINUX_SPECIFIC_BASE 8 #define F_LINUX_SPECIFIC_BASE 1024 9 #endif 10 11 #ifndef F_ADD_SEALS 12 #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) 13 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) 14 15 #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ 16 #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ 17 #define F_SEAL_GROW 0x0004 /* prevent file from growing */ 18 #define F_SEAL_WRITE 0x0008 /* prevent writes */ 19 #endif 20 21 void *qemu_memfd_alloc(const char *name, size_t size, unsigned int seals, 22 int *fd); 23 void qemu_memfd_free(void *ptr, size_t size, int fd); 24 bool qemu_memfd_check(void); 25 26 #endif /* QEMU_MEMFD_H */ 27