{"id":303,"date":"2025-11-02T20:18:48","date_gmt":"2025-11-02T12:18:48","guid":{"rendered":"https:\/\/www.garfield-blog.top\/?p=303"},"modified":"2025-11-02T20:19:24","modified_gmt":"2025-11-02T12:19:24","slug":"%e6%b3%a8%e5%86%8cubus","status":"publish","type":"post","link":"https:\/\/www.garfield-blog.top\/?p=303","title":{"rendered":"\u3010\u6e90\u7801\u89e3\u6790\u3011ubus(2) \u6ce8\u518cubus"},"content":{"rendered":"\n

\u672c\u6587\u4ee5ubus<\/code>\u6e90\u7801\u4e2d\u7684.\/examples<\/code>\u76ee\u5f55\u4e0b\u7684\u5b98\u65b9demo<\/code>\u4e3a\u4f8b\u5b50\uff0c\u8bf4\u660e\u5982\u4f55\u6ce8\u518cubus<\/code>\u63a5\u53e3<\/p>\n\n\n\n

\u6ce8\u518cobject\u65b9\u6cd5<\/h2>\n\n\n\n
    \n
  1. \u5b9a\u4e49ubus<\/code>\u6d88\u606f\u5c01\u88c5\u7684\u7ed3\u6784<\/strong><\/li>\n<\/ol>\n\n\n\n
       enum {\n       COUNT_TO,\n       COUNT_STRING,\n       __COUNT_MAX\n   };\n\n   static const struct blobmsg_policy count_policy[__COUNT_MAX] = {\n       [COUNT_TO] = { .name = \"to\", .type = BLOBMSG_TYPE_INT32 },\n       [COUNT_STRING] = { .name = \"string\", .type = BLOBMSG_TYPE_STRING },\n   };<\/code><\/pre>\n\n\n\n
    ubus<\/code>\u901a\u4fe1\u4f7f\u7528\u7684\u662fjson<\/code>\u683c\u5f0f\uff0c\u8fd9\u91cc\u4f1a\u9884\u5148\u5b9a\u4e49\u597d\u6bcf\u4e2aubus<\/code>\u6d88\u606f\u7684json<\/code>\u683c\u5f0f\u7684\u5185\u5bb9<\/p>\n\n\n\n
      \n
    1. \u5b9a\u4e49ubus<\/code>\u56de\u8c03\u51fd\u6570<\/strong><\/li>\n<\/ol>\n\n\n\n
         static int test_count(struct ubus_context *ctx, struct ubus_object *obj,\n                 struct ubus_request_data *req, const char *method,\n                 struct blob_attr *msg)\n    {\n        struct blob_attr *tb[__COUNT_MAX];\n        char *s1, *s2;\n        uint32_t num;\n\n        blobmsg_parse(count_policy, __COUNT_MAX, tb, blob_data(msg), blob_len(msg));\n        if (!tb[COUNT_TO] || !tb[COUNT_STRING])\n            return UBUS_STATUS_INVALID_ARGUMENT;\n\n        num = blobmsg_get_u32(tb[COUNT_TO]);\n        s1 = blobmsg_get_string(tb[COUNT_STRING]);\n        s2 = count_to_number(num);\n        if (!s1 || !s2) {\n            free(s2);\n            return UBUS_STATUS_UNKNOWN_ERROR;\n        }\n        blob_buf_init(&b, 0);\n        blobmsg_add_u32(&b, \"rc\", strcmp(s1, s2));\n        ubus_send_reply(ctx, req, b.head);\n        free(s2);\n\n        return 0;\n    }<\/code><\/pre>\n\n\n\n
      \u200b\u5176\u4e2d\u7684`blobmsg_parse`\u51fd\u6570\u662f\u7528\u4e8e\u89e3\u6790\u4f20\u5165\u7684\u6570\u636e\uff0c\u89e3\u6790\u540e\u7684\u6570\u636e\u5b58\u653e\u5728\u6570\u7ec4`tb`\u4e2d\uff0c\u518d\u6839\u636e\u4e4b\u524d\u5df2\u7ecf\u5b9a\u4e49\u597d\u7684\u6570\u636e\u7c7b\u578b\u8fdb\u884c\u8f6c\u6362<\/code><\/pre>\n\n\n\n
        \n
      1. \u6ce8\u518cubus<\/code>\u56de\u8c03<\/strong><\/li>\n<\/ol>\n\n\n\n
           static const struct ubus_method test_methods[] = {\n       UBUS_METHOD(\"hello\", test_hello, hello_policy),\n       UBUS_METHOD(\"watch\", test_watch, watch_policy),\n       UBUS_METHOD(\"count\", test_count, count_policy),\n   };<\/code><\/pre>\n\n\n\n
          \n
        1. \u5b9a\u4e49object<\/code><\/strong><\/li>\n<\/ol>\n\n\n\n
             static struct ubus_object test_object = {\n       .name = \"test\",\n       .type = &test_object_type,\n       .methods = test_methods,\n       .n_methods = ARRAY_SIZE(test_methods),\n   };<\/code><\/pre>\n\n\n\n
            \n
          1. \u5c06ubus<\/code>\u5bf9\u8c61\u6ce8\u518c\u5230\u7cfb\u7edf\u4e2d<\/strong><\/li>\n<\/ol>\n\n\n\n
               static void server_main(void)\n   {\n       int ret;\n\n       ret = ubus_add_object(ctx, &test_object);\n       if (ret)\n           fprintf(stderr, \"Failed to add object: %s\\n\", ubus_strerror(ret));\n\n       ...\n\n       uloop_run();\n   }<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
            \u672c\u6587\u4ee5ubus\u6e90\u7801\u4e2d\u7684.\/examples\u76ee\u5f55\u4e0b\u7684\u5b98\u65b9demo\u4e3a\u4f8b\u5b50\uff0c\u8bf4\u660e\u5982\u4f55\u6ce8\u518cubus\u63a5\u53e3 \u6ce8\u518cobjec […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-303","post","type-post","status-publish","format-standard","hentry","category-source-code-analysis"],"_links":{"self":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts\/303","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=303"}],"version-history":[{"count":2,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts\/303\/revisions"}],"predecessor-version":[{"id":305,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=\/wp\/v2\/posts\/303\/revisions\/305"}],"wp:attachment":[{"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=303"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=303"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.garfield-blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}