{"id":41690,"date":"2020-02-14T08:42:48","date_gmt":"2020-02-14T05:42:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/dostupen-usb-raw-gadget-linux-modul-dlya-emulyaczii-usb-ustrojstv"},"modified":"2020-02-14T08:42:48","modified_gmt":"2020-02-14T05:42:48","slug":"dostupen-usb-raw-gadget-linux-modul-dlya-emulyaczii-usb-ustrojstv","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/dostupen-usb-raw-gadget-linux-modul-dlya-emulyaczii-usb-ustrojstv","title":{"rendered":"Disponible USB Raw Gadget, un m\u00f3dulo de Linux para emular dispositivos USB","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Andrei Konovalov de Google est\u00e1 desarrollando un nuevo m\u00f3dulo <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/xairy\/raw-gadget\">USB Raw Gadget<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/google\/kasan\/blob\/usb-fuzzer\/Documentation\/usb\/raw-gadget.rst\">que permite<\/a><\/noindex> emular dispositivos USB en espacio de usuario. Est\u00e1 en revisi\u00f3n <noindex><a rel=\"nofollow\" href=\"https:\/\/patchwork.kernel.org\/cover\/11332295\/\">una solicitud<\/a><\/noindex> para incluir este m\u00f3dulo en el n\u00facleo principal de Linux. USB Raw Gadget ya <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/google\/syzkaller\/blob\/master\/docs\/linux\/external_fuzzing_usb.md\">se utiliza<\/a><\/noindex> en Google para simplificar las pruebas de fuzzing de la pila USB del n\u00facleo mediante la herramienta <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/google\/syzkaller\">syzkaller<\/a><\/noindex>.<\/p>\n<p>El m\u00f3dulo a\u00f1ade una nueva interfaz de programaci\u00f3n en la subcapacidad del n\u00facleo  <noindex><a rel=\"nofollow\" href=\"http:\/\/www.linux-usb.org\/gadget\/\">USB Gadget<\/a><\/noindex> y se desarrolla como una alternativa a GadgetFS. La creaci\u00f3n de una nueva API se debi\u00f3 a la necesidad de obtener acceso de bajo nivel y directo a la subcapacidad USB Gadget desde el espacio de usuario, lo que permite procesar todas las solicitudes USB posibles (GadgetFS maneja algunas solicitudes por s\u00ed mismo, sin pasar al espacio de usuario). La gesti\u00f3n de USB Raw Gadget se realiza a trav\u00e9s del dispositivo \/dev\/raw-gadget, de forma similar a \/dev\/gadget en GadgetFS, pero para la interacci\u00f3n se utiliza una interfaz basada en ioctl(), no un pseudo-sistema de archivos.<\/p>\n<p>Adem\u00e1s del manejo directo de todas las solicitudes USB por parte de un proceso en el espacio de usuario, la nueva interfaz tambi\u00e9n se distingue por la capacidad de devolver cualquier dato en respuesta a una solicitud USB (GadgetFS realiza una verificaci\u00f3n de validez de los descriptores USB y filtra ciertas respuestas, lo que dificulta la identificaci\u00f3n de errores durante las pruebas de fuzzing de la pila USB). Raw Gadget tambi\u00e9n permite seleccionar un dispositivo UDC (Controlador de Dispositivo USB) espec\u00edfico y un controlador para adjuntar, mientras que GadgetFS se adjunta al primer dispositivo UDC disponible. A diferentes UDC se les asignan nombres predecibles <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/USB#Endpoint\">endpoint<\/a><\/noindex> para diferenciar diferentes tipos de canales de comunicaci\u00f3n de datos dentro de un mismo dispositivo.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fuente: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52324\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0410\u043d\u0434\u0440\u0435\u0439 \u041a\u043e\u043d\u043e\u0432\u0430\u043b\u043e\u0432 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Google \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u043d\u043e\u0432\u044b\u0439 \u043c\u043e\u0434\u0443\u043b\u044c USB Raw Gadget, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u044d\u043c\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c USB-\u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f. \u041d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u043d\u0430 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u0438\u0438 \u0437\u0430\u044f\u0432\u043a\u0430 \u043d\u0430 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u0434\u0430\u043d\u043d\u043e\u0433\u043e \u043c\u043e\u0434\u0443\u043b\u044f \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux. USB Raw Gadget \u0443\u0436\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0432 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Google \u0434\u043b\u044f \u0443\u043f\u0440\u043e\u0449\u0435\u043d\u0438\u044f fuzzing-\u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f USB-\u0441\u0442\u0435\u043a\u0430 \u044f\u0434\u0440\u0430 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f syzkaller. \u041c\u043e\u0434\u0443\u043b\u044c \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u0442 \u043d\u043e\u0432\u044b\u0439 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 \u0432 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u044f\u0434\u0440\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-41690","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0410\u043d\u0434\u0440\u0435\u0439 \u041a\u043e\u043d\u043e\u0432\u0430\u043b\u043e\u0432 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Google \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u043d\u043e\u0432\u044b\u0439 \u043c\u043e\u0434\u0443\u043b\u044c USB Raw Gadget,\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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