{"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\/pl\/blog\/dostupen-usb-raw-gadget-linux-modul-dlya-emulyaczii-usb-ustrojstv","title":{"rendered":"Dost\u0119pny USB Raw Gadget, modu\u0142 Linux do emulacji urz\u0105dze\u0144 USB.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Andrzej Konowa\u0142ow z firmy Google rozwija nowy modu\u0142 <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\">umo\u017cliwiaj\u0105ce<\/a><\/noindex> emulowa\u0107 urz\u0105dzenia USB w przestrzeni u\u017cytkownika. Jest w trakcie przegl\u0105du <noindex><a rel=\"nofollow\" href=\"https:\/\/patchwork.kernel.org\/cover\/11332295\/\">wniosek<\/a><\/noindex> o dodanie tego modu\u0142u do g\u0142\u00f3wnego sk\u0142adu j\u0105dra Linux. USB Raw Gadget ju\u017c <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/google\/syzkaller\/blob\/master\/docs\/linux\/external_fuzzing_usb.md\">jest stosowane<\/a><\/noindex> w firmie Google w celu uproszczenia test\u00f3w fuzzingowych stosu USB j\u0105dra za pomoc\u0105 narz\u0119dzia <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/google\/syzkaller\">syzkaller<\/a><\/noindex>.<\/p>\n<p>Modu\u0142 dodaje nowy interfejs programowania do podsystemu j\u0105dra  <noindex><a rel=\"nofollow\" href=\"http:\/\/www.linux-usb.org\/gadget\/\">USB Gadget<\/a><\/noindex> i rozwija si\u0119 jako alternatywa dla GadgetFS. Utworzenie nowego API jest podyktowane konieczno\u015bci\u0105 uzyskania niskopoziomowego i bezpo\u015bredniego dost\u0119pu do podsystemu USB Gadget z przestrzeni u\u017cytkownika, co pozwala na obs\u0142ugiwanie wszystkich mo\u017cliwych \u017c\u0105da\u0144 USB (GadgetFS obs\u0142uguje niekt\u00f3re \u017c\u0105dania samodzielnie, nie przekazuj\u0105c ich do przestrzeni u\u017cytkownika). Zarz\u0105dzanie USB Raw Gadget odbywa si\u0119 przez urz\u0105dzenie \/dev\/raw-gadget na podobie\u0144stwo \/dev\/gadget w GadgetFS, ale do interakcji wykorzystywany jest interfejs oparty na ioctl(), a nie pseudo-FS.<\/p>\n<p>Opr\u00f3cz bezpo\u015bredniego przetwarzania wszystkich \u017c\u0105da\u0144 USB przez proces w przestrzeni u\u017cytkownika, nowy interfejs wyr\u00f3\u017cnia si\u0119 r\u00f3wnie\u017c mo\u017cliwo\u015bci\u0105 zwracania dowolnych danych w odpowiedzi na \u017c\u0105danie USB (GadgetFS przeprowadza weryfikacj\u0119 poprawno\u015bci opis\u00f3w USB i filtruje okre\u015blone odpowiedzi, co utrudnia identyfikacj\u0119 b\u0142\u0119d\u00f3w podczas test\u00f3w fuzzingowych stosu USB). Raw Gadget daje r\u00f3wnie\u017c mo\u017cliwo\u015b\u0107 wyboru konkretnego urz\u0105dzenia UDC (USB Device Controller) i sterownika do pod\u0142\u0105czenia, podczas gdy GadgetFS \u0142\u0105czy si\u0119 z pierwszym dost\u0119pnym urz\u0105dzeniem UDC. R\u00f3\u017cnym UDC przypisywane s\u0105 przewidywalne nazwy <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/USB#Endpoint\">endpoint<\/a><\/noindex> w celu rozdzielenia r\u00f3\u017cnych typ\u00f3w kana\u0142\u00f3w wymiany danych w ramach jednego urz\u0105dzenia.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <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 5.0.1.1 - 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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