{"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\/hu\/blog\/news\/predlozhenie-po-blokirovke-drajverov-prosloek-predostavlyayushhih-dostup-k-gpl-vyzovam-yadra-linux","title":{"rendered":"Javascripten alap\u00fa oper\u00e1ci\u00f3s rendszerek blokkol\u00e1s\u00e1ra vonatkoz\u00f3 aj\u00e1nlat, amelyek hozz\u00e1f\u00e9r\u00e9st biztos\u00edtanak a Linux kernel GPL-h\u00edv\u00e1saihoz","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Christoph Hellwig, a well-known Linux kernel developer who at one time was part of the technical management committee of the Linux Foundation and acted as a plaintiff in a lawsuit related to GPL litigation<\/a><\/noindex> with VMware, aj\u00e1nlotta<\/a><\/noindex> tighten the protection against linking proprietary drivers with Linux kernel components that are exported only for modules under the GPL license. To bypass the restriction on exporting GPL symbols, manufacturers of proprietary drivers use a bridging module, the code for which is open and distributed under the GPLv2 license, but its functions are limited to translating the proprietary driver's access to the necessary kernel APIs that are prohibited for use from proprietary code directly.<\/p>\n

To block such maneuvers, Christoph Hellwig prepar\u00e1lt<\/a><\/noindex> Linux kernel patchok, amelyek biztos\u00edtj\u00e1k a GPL-szimb\u00f3lumok export\u00e1l\u00e1s\u00e1hoz kapcsol\u00f3d\u00f3 z\u00e1szl\u00f3k \u00f6r\u00f6kl\u0151d\u00e9s\u00e9t. Az aj\u00e1nlat a TAINT_PROPRIETARY_MODULE z\u00e1szl\u00f3 \u00f6r\u00f6kl\u00e9s\u00e9re vonatkozik minden olyan modulban, amely szimb\u00f3lumokat import\u00e1l a megadott z\u00e1szl\u00f3val rendelkez\u0151 modulokb\u00f3l. \u00cdgy, ha egy GPL k\u00f6ztes modul megpr\u00f3b\u00e1lja import\u00e1lni a nem GPL modulokb\u00f3l sz\u00e1rmaz\u00f3 szimb\u00f3lumokat, akkor a GPL-modul \u00f6r\u00f6kli a TAINT_PROPRIETARY_MODULE c\u00edmk\u00e9t, \u00e9s nem tud hozz\u00e1f\u00e9rni a GPL licencszel rendelkez\u0151 modulok sz\u00e1m\u00e1ra el\u00e9rhet\u0151 kernel komponensekhez, m\u00e9g akkor sem, ha a modul kor\u00e1bban import\u00e1lt szimb\u00f3lumokat a \"gplonly\" kateg\u00f3ri\u00e1b\u00f3l. <\/p>\n

During the discussion, there was also hogy<\/a><\/noindex> visszafel\u00e9 blokkol\u00f3 aj\u00e1nl\u00e1s - ha egy modul EXPORT_SYMBOL_GPL szimb\u00f3lumokat import\u00e1l, akkor a modul \u00e1ltal export\u00e1lt b\u00e1rmely szimb\u00f3lumnak nem szabad import\u00e1lnia a GPL-vel kompatibilit\u00e1st ny\u00edltan meg nem hirdet\u0151 modulok \u00e1ltal. Vagyis, ha egy modul EXPORT_SYMBOL_GPL szimb\u00f3lumokat import\u00e1l, akkor az \u00f6sszes export\u00e1lt szimb\u00f3lumot EXPORT_SYMBOL_GPL-k\u00e9nt kell kezelni. Christoph Helwig \u00edrt<\/a><\/noindex>, fully agrees with this proposal, but such a change will not be approved by Linus Torvalds, as it will render a large part of the kernel subsystems inaccessible to proprietary drivers because the fundamental symbols exported under the GPL are involved in driver development.<\/p>\n

The change was proposed in response to k\u00f6zz\u00e9 tette<\/a><\/noindex> an engineer from Facebook's series of patches implementing a new netgpu subsystem, allowing direct memory access (DMA
\nzero-copy) between the network card and GPU, while handling protocol processing with the CPU. Dissatisfaction<\/a><\/noindex> of the developers was caused el\u00e9rhet\u0151s\u00e9ge.<\/a><\/noindex> megval\u00f3s\u00edt\u00e1sok kiz\u00e1r\u00f3lag a NVIDIA szabadalmazott meghajt\u00f3i sz\u00e1m\u00e1ra a megadott meghajt\u00f3k GPL-fel\u00fclete \u00e1ltal. V\u00e1laszk\u00e9nt , mivel a replica kifejez\u00e9s jobban vonatkozik az adatb\u00e1zis-kezel\u00e9sre, \u00e9s torz\u00edtja a jelent\u00e9st a hangrendszer kontextus\u00e1ban. V\u00e9g\u00fcl az \u00faj kifejez\u00e9s a<\/a><\/noindex> a patch-k\u00e9sz\u00edt\u0151 megjegyezte<\/a><\/noindex>, hogy az alrendszer nem k\u00f6thet\u0151 a NVIDIA-hoz, \u00e9s annak t\u00e1mogat\u00e1sa biztos\u00edthat\u00f3 t\u00f6bbek k\u00f6z\u00f6tt az AMD \u00e9s Intel GPU-khoz k\u00e9sz\u00fclt szoftveres interf\u00e9szek sz\u00e1m\u00e1ra is. Ennek eredm\u00e9nyek\u00e9nt a netgpu kernelbe val\u00f3 integr\u00e1l\u00e1s\u00e1t lehetetlennek nyilv\u00e1n\u00edtott\u00e1k, am\u00edg m\u0171k\u00f6d\u0151 t\u00e1mogat\u00e1s nem \u00e1llt rendelkez\u00e9sre szabad meghajt\u00f3k alapj\u00e1n, mint p\u00e9ld\u00e1ul az AMDGPU, Intel i915 vagy Nouveau. <\/p>\n

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

Forr\u00e1s: 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\udd47Aj\u00e1nlat a meghajt\u00f3kat blokkol\u00f3 rendszerekhez, amelyek hozz\u00e1f\u00e9r\u00e9st biztos\u00edtanak a Linux kernel GPL-h\u00edv\u00e1saihoz | ProHoster","description":"Christoph Hellwig, a well-known Linux kernel developer who at one time was part of the technical management committee of the Linux Foundation and acted as a plaintiff 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