{"id":90687,"date":"2020-08-04T13:42:33","date_gmt":"2020-08-04T11:42:33","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predlozhenie-po-blokirovke-drajverov-prosloek-predostavlyayushhih-dostup-k-gpl-vyzovam-yadra-linux"},"modified":"2020-08-04T13:42:33","modified_gmt":"2020-08-04T11:42:33","slug":"predlozhenie-po-blokirovke-drajverov-prosloek-predostavlyayushhih-dostup-k-gpl-vyzovam-yadra-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/predlozhenie-po-blokirovke-drajverov-prosloek-predostavlyayushhih-dostup-k-gpl-vyzovam-yadra-linux","title":{"rendered":"Ponuda za blokiranje voza\u010da-proslojka koji omogu\u0107uju pristup GPL-pozivima jezgre Linuxa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Kristof Helvig (Christoph Hellwig), poznati programer jezgre Linuxa, u svoje vrijeme \u010dlan upravnog tehni\u010dkog odbora organizacije Linux Foundation i tu\u017eitelj u vezi s GPL-om sudskom postupku<\/a><\/noindex> s VMware, predlo\u017eio<\/a><\/noindex> poja\u010dati za\u0161titu od spajanja proprietarnih voza\u010da s komponentama jezgre Linuxa, koje se izvoze samo za module pod GPL licencom. Kako bi zaobi\u0161li ograni\u010denje na izvoz GPL-simbola, proizvo\u0111a\u010di proprietarnih voza\u010da koriste modul-proslojku, \u010diji je kod otvoren i distribuira se pod GPLv2 licencom, a njegove funkcije svode se na prevo\u0111enje pristupa proprietarnom voza\u010du potrebnim API-ima jezgre, koji su zabranjeni za kori\u0161tenje iz proprietarnog koda izravno.<\/p>\n

Kako bi se blokirao takav manevar, Kristof Helvig pripremio<\/a><\/noindex> za Linux jezgro, zakrpe koje omogu\u0107uju naslje\u0111ivanje zastavica povezanih s izvozom GPL simbola. Ponuda se svodi na naslje\u0111ivanje zastavice TAINT_PROPRIETARY_MODULE u svim modulima koji uvoze simbole iz modula s ovom zastavicom. Tako, ako GPL modul-za\u0161titni sloj poku\u0161a uvesti simbole iz ne-GPL modula, tada \u0107e GPL modul naslijediti oznaku TAINT_PROPRIETARY_MODULE i ne\u0107e mo\u0107i pristupiti komponentama jezgre dostupnim samo za module pod GPL licencom, \u010dak i ako je modul ranije uvezao simbole iz kategorije 'gplonly'. <\/p>\n

Tijekom rasprave tako\u0111e je izre\u010dena<\/a><\/noindex> prijedlog za obrnuto blokiranje \u2014 ako modul uvozi simbole EXPORT_SYMBOL_GPL, svi simboli koje ovaj modul izvozi ne smiju se uvoziti modulima koji izri\u010dito ne tvrde o uskla\u0111enosti s GPL. Odnosno, ako modul uvozi simbole EXPORT_SYMBOL_GPL, svi njegovi izvozni simboli trebaju se obra\u0111ivati kao EXPORT_SYMBOL_GPL. Kristof Helwig napisao<\/a><\/noindex>, da se 100% sla\u017ee s ovom ponudom, ali takva promjena ne\u0107e pro\u0107i Linus Torvalds, jer \u0107e dovesti do nedostupnosti ve\u0107ine podsustava jezgre za proprietarne voza\u010de, zbog toga \u0161to se prilikom razvoja voza\u010da povezuju osnovni simboli koji se izvoze pod GPL-om.<\/p>\n

Promjena je predlo\u017eena kao odgovor na publikaciju<\/a><\/noindex> in\u017eenjera iz Facebooka serije zakrpa s implementacijom novog podsustava netgpu, koji omogu\u0107ava organiziranje izravne razmjene podataka (DMA
\nzero-copy) izme\u0111u mre\u017ene kartice i GPU-a, pritom obavljaju\u0107i obradu protokola pomo\u0107u CPU-a. nezadovoljstvo<\/a><\/noindex> programera izazvalo je dostupnost<\/a><\/noindex> implementacije isklju\u010divo za vlasni\u010dke NVIDIA upravlja\u010dke programe putem GPL sloja koji pru\u017eaju ti upravlja\u010dki programi. Kao odgovor na kritiku<\/a><\/noindex> autor zakrpa je naveo<\/a><\/noindex>, da podsustav nije vezan za NVIDIA-u i da njena podr\u0161ka mo\u017ee biti osigurana uklju\u010duju\u0107i i programske su\u010delje za GPU AMD i Intel. Kao rezultat, napredak netgpu-a u jezgru je progla\u0161en nemogu\u0107im dok ne bude dostupna funkcionalna podr\u0161ka na temelju slobodnih upravlja\u010dkih programa poput AMDGPU, Intel i915 ili Nouveau. <\/p>\n

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

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

\u041a\u0440\u0438\u0441\u0442\u043e\u0444 \u0425\u0435\u043b\u0432\u0438\u0433 (Christoph Hellwig), \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a \u044f\u0434\u0440\u0430 Linux, \u0432 \u0441\u0432\u043e\u0451 \u0432\u0440\u0435\u043c\u044f \u0432\u0445\u043e\u0434\u0438\u0432\u0448\u0438\u0439 \u0432 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043a\u043e\u043c\u0438\u0442\u0435\u0442 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 Linux Foundation \u0438 \u0432\u044b\u0441\u0442\u0443\u043f\u0430\u0432\u0448\u0438\u0439 \u0438\u0441\u0442\u0446\u043e\u043c \u0432 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u043c \u0441 GPL \u0441\u0443\u0434\u0435\u0431\u043d\u043e\u043c \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0435 \u0441 VMware, 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\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0438 […]<\/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":[702],"tags":[],"class_list":["post-90687","post","type-post","status-publish","format-standard","hentry","category-news"],"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\udd47Prijedlog za blokiranje upravlja\u010dkih programa-slojeva koji osiguravaju pristup GPL pozivima jezgra Linux | ProHoster","description":"Kristof Helvig (Christoph Hellwig), poznati programer jezgre Linuxa, u svoje vrijeme \u010dlan upravnog tehni\u010dkog odbora organizacije Linux Foundation i tu\u017eitelj u vezi s 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