{"id":32507,"date":"2019-10-31T21:47:26","date_gmt":"2019-10-31T18:47:26","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-yadro-linux-dlya-fs-ext4-vklyuchena-podderzhka-raboty-bez-uchyota-registra-simvolov\/"},"modified":"2019-10-31T21:47:26","modified_gmt":"2019-10-31T18:47:26","slug":"v-yadro-linux-dlya-fs-ext4-vklyuchena-podderzhka-raboty-bez-uchyota-registra-simvolov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/v-yadro-linux-dlya-fs-ext4-vklyuchena-podderzhka-raboty-bez-uchyota-registra-simvolov","title":{"rendered":"A Linux kernelbe az Ext4 f\u00e1jlrendszerhez a kis- \u00e9s nagybet\u0171k figyelmen k\u00edv\u00fcl hagy\u00e1s\u00e1nak t\u00e1mogat\u00e1sa ker\u00fclt bevezet\u00e9sre.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ted Ts\u00f3, az ext2\/ext3\/ext4 f\u00e1jlrendszerek szerz\u0151je, accepted<\/a><\/noindex> a Linux-next \u00e1gban, amelyre a Linux 5.2 kernel kiad\u00e1s\u00e1t alapozz\u00e1k, a API-specifikus m\u00f3dos\u00edt\u00e1sok tal\u00e1lhat\u00f3k:<\/a><\/noindex>f\u00e1jlrendszer Ext4-ben a kis- \u00e9s nagybet\u0171 \u00e9rz\u00e9keny m\u0171veletek t\u00e1mogat\u00e1s\u00e1t megval\u00f3s\u00edt\u00f3 patch-eket k\u00e9sz\u00edtett.<\/p>\n

A kis- \u00e9s nagybet\u0171k k\u00f6z\u00f6tti k\u00fcl\u00f6nbs\u00e9g n\u00e9lk\u00fcli \u00fczemm\u00f3d opci\u00f3k\u00e9nt aktiv\u00e1lhat\u00f3 egyes k\u00f6nyvt\u00e1rakhoz egy \u00faj «+F» attrib\u00fatum seg\u00edts\u00e9g\u00e9vel (EXT4_CASEFOLD_FL). Ha ezt az attrib\u00fatumot egy k\u00f6nyvt\u00e1rra \u00e1ll\u00edtj\u00e1k, akkor az \u00f6sszes f\u00e1jl- \u00e9s alk\u00f6nyvt\u00e1r-m\u0171velet a kis- \u00e9s nagybet\u0171k figyelembev\u00e9tel\u00e9vel t\u00f6rt\u00e9nik, a keres\u00e9si \u00e9s f\u00e1jlok megnyit\u00e1si m\u0171veletek eset\u00e9n is ignor\u00e1lja a kis- \u00e9s nagybet\u0171ket (p\u00e9ld\u00e1ul a Test.txt, test.txt \u00e9s test.TXT f\u00e1jlok az ilyen k\u00f6nyvt\u00e1rakban azonosnak sz\u00e1m\u00edtanak). Alap\u00e9rtelmez\u00e9s szerint, az «+F» attrib\u00fatummal nem rendelkez\u0151 k\u00f6nyvt\u00e1rakat kiv\u00e9ve, a f\u00e1jlrendszer \u00e9rz\u00e9keny a kis- \u00e9s nagybet\u0171kre. A kis- \u00e9s nagybet\u0171k figyelembev\u00e9tel\u00e9vel kapcsolatos \u00fczemm\u00f3d aktiv\u00e1l\u00e1s\u00e1hoz m\u00f3dos\u00edtott eszk\u00f6zk\u00e9szletet javasolnak e2fsprogs<\/a><\/noindex>.<\/p>\n

A patch-eket Gabriel Krisman Bertazi, a Collabora munkat\u00e1rsa k\u00e9sz\u00edtette, \u00e9s hetedik<\/a><\/noindex> pr\u00f3b\u00e1lkoz\u00e1s ut\u00e1n h\u00e1rom \u00e9v<\/a><\/noindex> kifejleszt\u00e9s\u00e9re \u00e9s a megjegyz\u00e9sek elt\u00e1vol\u00edt\u00e1s\u00e1ra. A megval\u00f3s\u00edt\u00e1s nem m\u00f3dos\u00edtja a t\u00e1rol\u00e1si form\u00e1tumot \u00e9s kiz\u00e1r\u00f3lag az ext4_lookup() funkci\u00f3 nev-\u00f6sszehasonl\u00edt\u00e1si logik\u00e1j\u00e1nak m\u00f3dos\u00edt\u00e1s\u00e1n \u00e9s a dcache (Directory Name Lookup Cache) strukt\u00far\u00e1ban l\u00e9v\u0151 hashnak a cser\u00e9j\u00e9n alapul. Az «+F» attrib\u00fatum \u00e9rt\u00e9k\u00e9t a k\u00fcl\u00f6nb\u00f6z\u0151 k\u00f6nyvt\u00e1rak inode-j\u00e1ban t\u00e1rolj\u00e1k \u00e9s kiterjesztik az \u00f6sszes be\u00e1gyazott f\u00e1jlra \u00e9s alk\u00f6nyvt\u00e1rra. Az inform\u00e1ci\u00f3 a k\u00f3dol\u00e1sr\u00f3l a szuperblokkban marad meg.<\/p>\n

A megl\u00e9v\u0151 f\u00e1jlnevekkel val\u00f3 \u00fctk\u00f6z\u00e9sek elker\u00fcl\u00e9se \u00e9rdek\u00e9ben az «+F» attrib\u00fatum csak \u00fcres k\u00f6nyvt\u00e1rakon \u00e1ll\u00edthat\u00f3 be olyan f\u00e1jlrendszerekben, ahol a csatol\u00e1s sor\u00e1n enged\u00e9lyezett a f\u00e1jlok \u00e9s k\u00f6nyvt\u00e1rak nev\u00e9nek Unicode t\u00e1mogat\u00e1sa. Az «+F» attrib\u00fatummal aktiv\u00e1lt k\u00f6nyvt\u00e1ri elemek neveit automatikusan kisbet\u0171sre alak\u00edtj\u00e1k, \u00e9s \u00edgy jelennek meg a dcache-ben, de a lemezen az eredeti felhaszn\u00e1l\u00f3i megadott form\u00e1jukban maradnak, azaz a kis- \u00e9s nagybet\u0171kt\u0151l f\u00fcggetlen feldolgoz\u00e1s ellen\u00e9re a nevek megjelen\u00edt\u00e9se \u00e9s meg\u0151rz\u00e9se nem vesz\u00edt inform\u00e1ci\u00f3t a kis- \u00e9s nagybet\u0171kr\u0151l (azonban a rendszer nem engedi meg olyan f\u00e1jlnevek l\u00e9trehoz\u00e1s\u00e1t, amelyek azonos karaktereket tartalmaznak, de m\u00e1s kis- \u00e9s nagybet\u0171s form\u00e1ban vannak).<\/p>\n

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

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

\u0422\u0435\u0434 \u0426\u043e (Ted Ts’o), \u0430\u0432\u0442\u043e\u0440 \u0444\u0430\u0439\u043b\u043e\u0432\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c ext2\/ext3\/ext4, \u043f\u0440\u0438\u043d\u044f\u043b \u0432 \u0432\u0435\u0442\u043a\u0443 Linux-next, \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0431\u0443\u0434\u0435\u0442 \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u044f\u0434\u0440\u0430 Linux 5.2, \u043d\u0430\u0431\u043e\u0440 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u044e\u0449\u0438\u0445 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u0440\u0435\u0433\u0438\u0441\u0442\u0440\u043e\u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0432 \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 Ext4. \u041f\u0430\u0442\u0447\u0438 \u0442\u0430\u043a\u0436\u0435 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u044e\u0442 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432 UTF-8 \u0432 \u0438\u043c\u0435\u043d\u0430\u0445 \u0444\u0430\u0439\u043b\u043e\u0432. \u0420\u0435\u0436\u0438\u043c \u0440\u0430\u0431\u043e\u0442\u044b \u0431\u0435\u0437 \u0440\u0430\u0437\u043b\u0438\u0447\u0438\u044f \u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0430 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432 \u043e\u043f\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e \u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0435 \u043a \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u043c \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430\u043c \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\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-32507","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\udd47Az Ext4 f\u00e1jlrendszer a Linux kernelben m\u00e1r t\u00e1mogatja a kis- \u00e9s nagybet\u0171k \u00e9rz\u00e9ketlen m\u0171k\u00f6d\u00e9s\u00e9t | ProHoster","description":"Ted Ts'o, az ext2\/ext3\/ext4 f\u00e1jlrendszerek szerz\u0151je elfogadta a Linux-next \u00e1gba, amely alapj\u00e1n 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