47 	int r, fd;  in mfd_assert_new()  local
49 	fd = sys_memfd_create(name, flags);  in mfd_assert_new()
50 	if (fd < 0) {  in mfd_assert_new()
56 	r = ftruncate(fd, sz);  in mfd_assert_new()
62 	return fd;  in mfd_assert_new()
65 static __u64 mfd_assert_get_seals(int fd)  in mfd_assert_get_seals()  argument
69 	r = fcntl(fd, F_GET_SEALS);  in mfd_assert_get_seals()
71 		printf("GET_SEALS(%d) failed: %m\n", fd);  in mfd_assert_get_seals()
78 static void mfd_assert_has_seals(int fd, __u64 seals)  in mfd_assert_has_seals()  argument
82 	s = mfd_assert_get_seals(fd);  in mfd_assert_has_seals()
85 		       (unsigned long long)seals, (unsigned long long)s, fd);  in mfd_assert_has_seals()
90 static void mfd_assert_add_seals(int fd, __u64 seals)  in mfd_assert_add_seals()  argument
95 	s = mfd_assert_get_seals(fd);  in mfd_assert_add_seals()
96 	r = fcntl(fd, F_ADD_SEALS, seals);  in mfd_assert_add_seals()
99 		       fd, (unsigned long long)s, (unsigned long long)seals);  in mfd_assert_add_seals()
104 static int mfd_busy_add_seals(int fd, __u64 seals)  in mfd_busy_add_seals()  argument
109 	r = fcntl(fd, F_GET_SEALS);  in mfd_busy_add_seals()
115 	r = fcntl(fd, F_ADD_SEALS, seals);  in mfd_busy_add_seals()
118 		       fd, (unsigned long long)s, (unsigned long long)seals);  in mfd_busy_add_seals()
125 static void *mfd_assert_mmap_shared(int fd)  in mfd_assert_mmap_shared()  argument
133 		 fd,  in mfd_assert_mmap_shared()
143 static void *mfd_assert_mmap_private(int fd)  in mfd_assert_mmap_private()  argument
151 		 fd,  in mfd_assert_mmap_private()
232 	int fd, mfd, r;  in main()  local
244 	fd = open(argv[1], O_RDONLY | O_CLOEXEC);  in main()
245 	if (fd < 0) {  in main()
271 	r = read(fd, p, MFD_DEF_SIZE);  in main()
307 	close(fd);  in main()