{"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\/hu\/blog\/dostupen-usb-raw-gadget-linux-modul-dlya-emulyaczii-usb-ustrojstv","title":{"rendered":"El\u00e9rhet\u0151 a USB Raw Gadget, egy Linux modul az USB eszk\u00f6z\u00f6k emul\u00e1l\u00e1s\u00e1ra.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Andr\u00e9 Konovalov a Google-b\u00f3l egy \u00faj modult fejleszt USB Raw Gadget<\/a><\/noindex>, amely lehet\u0151v\u00e9 teszi<\/a><\/noindex> USB-eszk\u00f6z\u00f6k emul\u00e1l\u00e1sa felhaszn\u00e1l\u00f3i t\u00e9rben. Jelenleg elb\u00edr\u00e1l\u00e1s alatt \u00e1ll p\u00e1ly\u00e1zat<\/a><\/noindex> a modul Linux kernelbe val\u00f3 integr\u00e1l\u00e1s\u00e1ra. Az USB Raw Gadget m\u00e1r haszn\u00e1latban van<\/a><\/noindex> a Google-n\u00e1l a USB kernel stack fuzzing tesztel\u00e9s\u00e9nek megk\u00f6nny\u00edt\u00e9se \u00e9rdek\u00e9ben k\u00e9sz\u00edtett eszk\u00f6zk\u00e9szlettel syzkaller<\/a><\/noindex>.<\/p>\n

A modul \u00faj programoz\u00e1si interf\u00e9szt ad a kernel USB Gadget<\/a><\/noindex> alrendszer\u00e9hez, \u00e9s alternat\u00edvak\u00e9nt fejl\u0151dik a GadgetFS-hez k\u00e9pest. Az \u00faj API l\u00e9trehoz\u00e1s\u00e1nak sz\u00fcks\u00e9gess\u00e9ge az alacsony szint\u0171 \u00e9s k\u00f6zvetlen hozz\u00e1f\u00e9r\u00e9s megszerz\u00e9s\u00e9vel indokolt a felhaszn\u00e1l\u00f3i t\u00e9r USB Gadget alrendszer\u00e9hez, amely lehet\u0151v\u00e9 teszi minden lehets\u00e9ges USB-k\u00e9r\u00e9s feldolgoz\u00e1s\u00e1t (a GadgetFS egyes k\u00e9r\u00e9seket \u00f6n\u00e1ll\u00f3an kezel, nem \u00e1tadva azokat a felhaszn\u00e1l\u00f3i t\u00e9rnek). Az USB Raw Gadget kezel\u00e9se a \/dev\/raw-gadget eszk\u00f6z\u00f6n kereszt\u00fcl t\u00f6rt\u00e9nik, hasonl\u00f3an a \/dev\/gadget-hez a GadgetFS-ben, de az interakci\u00f3hoz ioctl()-alap\u00fa interf\u00e9szt haszn\u00e1lnak, nem pedig pszeudo-f\u00e1jlrendszert.<\/p>\n

A felhaszn\u00e1l\u00f3i t\u00e9rben l\u00e9v\u0151 folyamat k\u00f6zvetlen USB-k\u00e9r\u00e9sek feldolgoz\u00e1s\u00e1n k\u00edv\u00fcl az \u00faj interf\u00e9sz lehet\u0151s\u00e9get ad b\u00e1rmilyen adat visszaad\u00e1s\u00e1ra az USB-k\u00e9r\u00e9sre (a GadgetFS ellen\u0151rzi az USB-deszkriptorok \u00e9rv\u00e9nyess\u00e9g\u00e9t \u00e9s sz\u0171ri egyes v\u00e1laszokat, ami megnehez\u00edti a hib\u00e1k \u00e9szlel\u00e9s\u00e9t az USB stack fuzzing tesztel\u00e9se sor\u00e1n). A Raw Gadget lehet\u0151v\u00e9 teszi egy adott UDC (USB Device Controller) kiv\u00e1laszt\u00e1s\u00e1t \u00e9s egy illeszt\u0151programot az \u00f6sszekapcsol\u00e1shoz, m\u00edg a GadgetFS az els\u0151 el\u00e9rhet\u0151 UDC-hez csatlakozik. K\u00fcl\u00f6nb\u00f6z\u0151 UDC-k sz\u00e1m\u00e1ra el\u0151re meghat\u00e1rozott neveket rendelnek endpoint<\/a><\/noindex> az egyes adat\u00e1tviteli csatornat\u00edpusok elk\u00fcl\u00f6n\u00edt\u00e9s\u00e9re egyetlen eszk\u00f6z\u00f6n bel\u00fcl.<\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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 […]<\/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\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47 Az USB Raw Gadget, a Linux modul USB-eszk\u00f6z\u00f6k emul\u00e1l\u00e1s\u00e1ra el\u00e9rhet\u0151 | ProHoster","description":"Andr\u00e9 Konovalov a Google-b\u00f3l az USB Raw Gadget \u00faj modult 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