{"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\/sv\/blog\/dostupen-usb-raw-gadget-linux-modul-dlya-emulyaczii-usb-ustrojstv","title":{"rendered":"USB Raw Gadget \u00e4r tillg\u00e4nglig, en Linux-modul f\u00f6r emulering av USB-enheter.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Andrey Konovalov fr\u00e5n Google utvecklar en ny modul USB Raw Gadget<\/a><\/noindex>, m\u00f6jligg\u00f6r<\/a><\/noindex> emulera USB-enheter i anv\u00e4ndarutrymmet. Under granskning ans\u00f6kan<\/a><\/noindex> f\u00f6r att inkludera denna modul i den grundl\u00e4ggande k\u00e4rnan i Linux. USB Raw Gadget \u00e4r redan anv\u00e4nder<\/a><\/noindex> p\u00e5 Google f\u00f6r att f\u00f6renkla fuzzing-testning av USB-stacken i k\u00e4rnan med hj\u00e4lp av verktyg syzkaller<\/a><\/noindex>.<\/p>\n

Modulen l\u00e4gger till ett nytt programmeringsgr\u00e4nssnitt i USB Gadget-undersystemet och utvecklas som ett alternativ till GadgetFS. Skapandet av det nya API:et beror p\u00e5 behovet av att f\u00e5 l\u00e5g niv\u00e5 och direkt tillg\u00e5ng till USB Gadget-undersystemet fr\u00e5n anv\u00e4ndarutrymmet, vilket m\u00f6jligg\u00f6r behandling av alla m\u00f6jliga USB-f\u00f6rfr\u00e5gningar (GadgetFS hanterar vissa f\u00f6rfr\u00e5gningar sj\u00e4lva utan att skicka dem till anv\u00e4ndarutrymmet). Hantering av USB Raw Gadget sker via enheten \/dev\/raw-gadget, liknande \/dev\/gadget i GadgetFS, men f\u00f6r interaktion anv\u00e4nds ett interface baserat p\u00e5 ioctl(), ist\u00e4llet f\u00f6r ett pseudo-FS.<\/a><\/noindex> F\u00f6rutom direkt hantering av alla USB-f\u00f6rfr\u00e5gningar av processen i anv\u00e4ndarutrymmet skiljer sig det nya gr\u00e4nssnittet ocks\u00e5 genom m\u00f6jligheten att returnera valfria data som svar p\u00e5 USB-f\u00f6rfr\u00e5gningar (GadgetFS utf\u00f6r en verifiering av USB-beskrivare och filtrerar vissa svar, vilket hindrar uppt\u00e4ckten av fel vid fuzzing-testning av USB-stacken). Raw Gadget ger ocks\u00e5 m\u00f6jlighet att v\u00e4lja en specifik UDC (USB Device Controller) och drivrutin f\u00f6r anslutning, medan GadgetFS ansluter till den f\u00f6rsta tillg\u00e4ngliga UDC-enheten. F\u00f6r olika UDC tilldelas f\u00f6ruts\u00e4gbara namn<\/p>\n

f\u00f6r att s\u00e4rskilja olika typer av datakanaler inom en enhet. endpoint<\/a><\/noindex> Andrey Konovalov fr\u00e5n Google utvecklar en ny modul USB Raw Gadget,<\/p>\n

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

K\u00e4lla: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/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\udd47Tillg\u00e4nglig USB Raw Gadget, Linux-modul f\u00f6r emulering av USB-enheter | ProHoster","description":"\ud83e\udd47Tillg\u00e4nglig USB Raw Gadget, Linux-modul f\u00f6r emulering av USB-enheter | 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