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ͳΜͰ΋#1'Ͱ΍Δ࣌୅ͳΜͩͳΝ 6DIJP,POEP(.01FQBCP *OD DHSPVQWͷ σόΠεΞΫηεϑΟϧλ

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γχΞɾϓϦϯγύϧΤϯδχΞ ۙ౻ Ӊஐ࿕ / @udzura https://blog.udzura.jp/ Uchio Kondo ٕज़෦ ٕज़ج൫νʔϜ/σʔλج൫νʔϜ @ GMOϖύϘ ΤϯδχΞΧϑΣʢ෱Ԭࢢ੺ẂנจԽձؗʣ αϙʔλʔ Duolingo Diamond Leaguer 💎 * ޷͖ͳγεςϜίʔϧ: open_by_handle_at(2) * ޷͖ͳLinux Namespace: Time Namespace * ࠷ۙ͸ݴޠ࣮૷ʼOSࣗ࡞ʼBPFɺίϯςφɺͱ͍͏ײ͡...

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͜Ε·Ͱͷ͋Β͢͡ wF#1'ͱ͍͏ٕज़͕͋Δ w·ͨ͸Ͱݕࡧ wͳΜ΍ΧʔωϧͰ҆શߴ଎ʹϑΟϧλ͢Δٕज़

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F#1'ͷϓϩάϥϜλΠϓ wW w ଟ͗ͯ͢೺ѲͰ͖ͳ͍ͷͰ ୭͔෩དྷͷγϨϯʹྫ͑ͯ؆ܿʹڭ͑ͯཉ͍͠

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BPF_PROG_TYPE_CGROUP_DEVICE

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DHSPVQWͷσόΠεΞΫηε੍ݶ wEFWJDFTͱ͍͏αϒγεςϜ͕͋ͬͨ wಛఆͷϑΥʔϚοτͰEFWJDFTBMMPX΍EFWJDFTEFOZʹॻ͖ࠐΉ IUUQTXXXLFSOFMPSHEPD%PDVNFOUBUJPODHSPVQWEFWJDFTUYU

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DHSPVQWͰͷσόΠεΞΫηε੍ݶ wJOUFSGBDFpMF͕ͳ͘ͳΔʢʂʣ w#1'@$(3061@%&7*$&ͳϓϩάϥϜΛDHSPVQʹΞλον͢Δͱͷ͜ͱ wϓϩάϥϜͰΑΓࡉ੍͔͘ޚՄೳԿͳΒྫ͑͹ϩάΛ࢒ͨ͠Γ΋Ͱ͖Δ IUUQTXXXLFSOFMPSHEPD%PDVNFOUBUJPODHSPVQWUYUɹ

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σϞϓϩάϥϜ

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ϑΟϧλ͢ΔϓϩάϥϜʢ$Ͱॻ͘ʣ

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ϑΟϧλ͢ΔϓϩάϥϜʢ$Ͱॻ͘ʣ ηΫγϣϯ໊ͷࢦఆ EFWVSBOEPNͰ͋Ε͹Λฦ͢ σϑΥϧτΛฦ͢

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Ϗϧυ͢Δ ͖ͬ͞ͷ$ίʔυ͕͜͏͍͏ #1'ϓϩάϥϜʹίϯύΠϧ͞Ε͍ͯΔ

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Ξλον͢Δ w΄΅Χʔωϧಉࠝͷ αϯϓϧίʔυͦͷ ··Ͱ͕͢

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ΧϨϯτϓϩηε͕UFTUCQGʹॴଐ͍ͯ͠Δ WͳͷͰͷߦͷΈݟΔ EFWVSBOEPNʹΞΫηεͰ͖ͳ͍ ʢͪͳΈʹSPPUͰ΋Ͱ͖·ͤΜʣ ଞͷσόΠε͸0,

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͔͜͜Β༨ஊ

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3VDZͱ͍͏ϓϩάϥϜΛ࡞ͬͨ w3VCZͷεΫϦϓτΛ௚઀#1'ʹ͠·͢ SVDZίϚϯυͰΦϒδΣΫτϑΝΠϧΛ ੜ੒͠ɺಉ༷ʹϩʔυ͢Δͱ༗ޮʹͳΔ

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࢓૊Έ Ruby Script mruby OpCodes BPF OpCodes BPF Object (ELF format) mruby Rucy transpiler wNSVCZͷ0Q$PEFΛ࡞ΓɺͦΕΛ#1'0Q$PEFʹ຋༁͢Δ

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໋ྩηοτͷൺֱʢҰ෦ʣ wNSVCZ wϨδελϚγϯ7.ɺϨδελ͸ݸʢݸΛਪ঑ʣ w໋ྩ͸Մม௕ɺҾ਺͸3 3ɺ೚ҙͷϨδελΛฦ٫Մ w#1' wϨδελϚγϯ7.ɺϨδελ͸ݸ w໋ྩ͸ݪଇݻఆ௕ʢCJUɺඞཁͳ৔߹CJUʣ wҾ਺͸3 3ɺฦ٫஋͸ඞͣ3

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ม׵ͷྫ

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·ͱΊʁ

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ॴײͱ͔ w#1'ϓϩάϥϜͷதͰ΋ɺσόΠεΞΫηεϑΟϧλ͸ খ͍࣮͞૷Ͱࢼ͢͜ͱ͕Ͱ͖ΔͷͰɺ 3VDZͷ࣮૷Λ͢Δࡍʹςετઌͱͯ͠ศརͩͬͨɻ wΈͳ͞Μ΋σόΠεΞΫηεϑΟϧλ͔Β#1'࢝Ί·ͤΜ͔ʁ