31 		.sa_flags = SA_ONSTACK | SA_NODEFER | SA_SIGINFO | 0x04000000,  in real_init()
41 	stub_syscall5(__NR_prctl, PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);  in real_init()
44 	res = stub_syscall3(__NR_read, 0,  in real_init()
49 	/* In SECCOMP mode, FD 0 is a socket and is later used for FD passing */  in real_init()
51 		stub_syscall1(__NR_close, 0);  in real_init()
53 		stub_syscall3(__NR_fcntl, 0, F_SETFL, O_NONBLOCK);  in real_init()
73 		res = stub_syscall3(__NR_close_range, 1, ~0U, 0);  in real_init()
74 		if (res != 0)  in real_init()
80 	stub_syscall2(__NR_sigaltstack, (unsigned long)&stack, 0);  in real_init()
87 		sa.sa_mask = 0;  in real_init()
90 				    (unsigned long)&sa, 0, sizeof(sa.sa_mask));  in real_init()
91 		if (res != 0)  in real_init()
95 		sa.sa_mask = ~0ULL;  in real_init()
98 				    (unsigned long)&sa, 0, sizeof(sa.sa_mask));  in real_init()
99 		if (res != 0)  in real_init()
103 				    (unsigned long)&sa, 0, sizeof(sa.sa_mask));  in real_init()
104 		if (res != 0)  in real_init()
108 				    (unsigned long)&sa, 0, sizeof(sa.sa_mask));  in real_init()
109 		if (res != 0)  in real_init()
113 				    (unsigned long)&sa, 0, sizeof(sa.sa_mask));  in real_init()
114 		if (res != 0)  in real_init()
118 				    (unsigned long)&sa, 0, sizeof(sa.sa_mask));  in real_init()
119 		if (res != 0)  in real_init()
123 				    (unsigned long)&sa, 0, sizeof(sa.sa_mask));  in real_init()
124 		if (res != 0)  in real_init()
135 			/* [0] Load upper 32bit of instruction pointer from seccomp_data */  in real_init()
140 			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, (init_data.stub_start) >> 32, 0, 3),  in real_init()
147 			BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xfffff000),  in real_init()
150 			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, (init_data.stub_start) & 0xfffff000, 1, 0),  in real_init()
159 				 UM_SECCOMP_ARCH_NATIVE, 1, 0),  in real_init()
170 				 7, 0),  in real_init()
172 				 6, 0),  in real_init()
174 				 5, 0),  in real_init()
176 				 4, 0),  in real_init()
178 				 3, 0),  in real_init()
181 				 2, 0),  in real_init()
184 				 2, 0),  in real_init()
187 				 1, 0),  in real_init()
196 			.len = sizeof(filter) / sizeof(filter[0]),  in real_init()
202 				  (unsigned long)&prog) != 0)  in real_init()
207 		stub_syscall4(__NR_ptrace, PTRACE_TRACEME, 0, 0, 0);  in real_init()