347 static struct seccomp_filter *seccomp_prepare_filter(struct sock_fprog *fprog)  in seccomp_prepare_filter()  argument
355 	if (fprog->len == 0 || fprog->len > BPF_MAXINSNS)  in seccomp_prepare_filter()
357 	BUG_ON(INT_MAX / fprog->len < sizeof(struct sock_filter));  in seccomp_prepare_filter()
358 	fp_size = fprog->len * sizeof(struct sock_filter);  in seccomp_prepare_filter()
377 	if (copy_from_user(fp, fprog->filter, fp_size))  in seccomp_prepare_filter()
381 	ret = bpf_check_classic(fp, fprog->len);  in seccomp_prepare_filter()
386 	ret = seccomp_check_filter(fp, fprog->len);  in seccomp_prepare_filter()
391 	ret = bpf_convert_filter(fp, fprog->len, NULL, &new_len);  in seccomp_prepare_filter()
406 	ret = bpf_convert_filter(fp, fprog->len, filter->prog->insnsi, &new_len);  in seccomp_prepare_filter()
436 	struct sock_fprog fprog;  in seccomp_prepare_user_filter()  local
444 		fprog.len = fprog32.len;  in seccomp_prepare_user_filter()
445 		fprog.filter = compat_ptr(fprog32.filter);  in seccomp_prepare_user_filter()
448 	if (copy_from_user(&fprog, user_filter, sizeof(fprog)))  in seccomp_prepare_user_filter()
450 	filter = seccomp_prepare_filter(&fprog);  in seccomp_prepare_user_filter()