{"created":"2023-05-15T11:59:40.265357+00:00","id":6202,"links":{},"metadata":{"_buckets":{"deposit":"b3403c91-7ca6-4ca4-9f93-433f35d00180"},"_deposit":{"created_by":3,"id":"6202","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"6202"},"status":"published"},"_oai":{"id":"oai:kyutech.repo.nii.ac.jp:00006202","sets":["15:20"]},"author_link":["25533","20772"],"item_23_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2018-10-22","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"45","bibliographicPageStart":"38","bibliographicVolumeNumber":"2018","bibliographic_titles":[{"bibliographic_title":"コンピュータセキュリティシンポジウム2018論文集"}]}]},"item_23_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"近年，Dockerなどのコンテナ型仮想化が注目を浴びている．コンテナではOverlayFSと呼ばれるファイルシステムがよく用いられる．読み込み専用の共通ディスクイメージ（下層）の上に書き込み可能な個別のディスクイメージ（上層）を重ねることができるが，ファイルを書き換える際に，下層にあるファイル全体が上層にコピーされるため，データベースのようにファイルサイズが大きい場合にはオーバヘッドが大きい．このコピー・オン・ライト機能を悪用されると，コンテナ内で意図的に巨大なファイルを書き換えることよりサービス妨害攻撃を引き起こされる可能性がある．本稿では，これを防ぐために新しいファイルシステムTranslayFSを提案する．これは，ファイルの書き換え時にスパースファイルと呼ばれる特殊なファイルを作成し，書き換え部分のみを上層に保持することでファイル全体を一括コピーしないようにする．ファイルの読み込みは，上層にデータが保存されていれば上層から，それ以外のデータについては下層から行う．我々はTranslayFSをLinuxカーネルに実装し，ファイル書き換え時の遅延を削減できることを確認した．","subitem_description_type":"Abstract"}]},"item_23_description_5":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"コンピュータセキュリティシンポジウム2018（CSS 2018）, 2018年10月22日-25日, 長野市, 日本","subitem_description_type":"Other"}]},"item_23_description_60":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"Conference Paper","subitem_description_type":"Other"}]},"item_23_publisher_7":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会"}]},"item_23_relation_14":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_text":"http://id.nii.ac.jp/1001/00192012/"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://id.nii.ac.jp/1001/00192012/","subitem_relation_type_select":"URI"}}]},"item_23_rights_13":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright (c) 2018 by the Information Processing Society of Japan. ここに掲載した著作物の利用に関する注意 本著作物の著作権は情報処理学会に帰属します。本著作物は著作権者である情報処理学会の許可のもとに掲載するものです。ご利用に当たっては「著作権法」ならびに「情報処理学会倫理綱領」に従うことをお願いいたします。 Notice for the use of this material The copyright of this material is retained by the Information Processing Society of Japan (IPSJ). This material is published on this web site with the agreement of the author (s) and the IPSJ. Please be complied with Copyright Law of Japan and the Code of Ethics of the IPSJ if any users wish to reproduce, make derivative work, distribute or make available to the public any part or whole thereof.  All Rights Reserved, Copyright (C) Information Processing Society of Japan."}]},"item_23_select_59":{"attribute_name":"査読の有無","attribute_value_mlt":[{"subitem_select_item":"no"}]},"item_23_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1882-0840","subitem_source_identifier_type":"ISSN"}]},"item_23_text_37":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"九州工業大学"},{"subitem_text_value":"九州工業大学"}]},"item_23_text_62":{"attribute_name":"連携ID","attribute_value_mlt":[{"subitem_text_value":"7914"}]},"item_23_version_type_58":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"佐藤,  寛文"}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[],"affiliationNames":[{"affiliationName":"","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"Kourai, Kenichi","creatorNameLang":"en"},{"creatorName":"光来, 健一","creatorNameLang":"ja"},{"creatorName":"コウライ, ケンイチ","creatorNameLang":"ja-Kana"}],"familyNames":[{},{},{}],"givenNames":[{},{},{}],"nameIdentifiers":[{},{},{},{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-10-09"}],"displaytype":"detail","filename":"RECN_2018-47.pdf","filesize":[{"value":"5.6 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"RECN_2018-47.pdf","url":"https://kyutech.repo.nii.ac.jp/record/6202/files/RECN_2018-47.pdf"},"version_id":"d0040236-5123-46a5-be82-80b02c3a0cb0"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"コンテナ","subitem_subject_scheme":"Other"},{"subitem_subject":"サービス妨害攻撃","subitem_subject_scheme":"Other"},{"subitem_subject":"ファイルシステム","subitem_subject_scheme":"Other"},{"subitem_subject":"スパースファイル","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"OverlayFSを用いたコンテナに対するサービス妨害攻撃の防止","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"OverlayFSを用いたコンテナに対するサービス妨害攻撃の防止"}]},"item_type_id":"23","owner":"3","path":["20"],"pubdate":{"attribute_name":"公開日","attribute_value":"2019-10-09"},"publish_date":"2019-10-09","publish_status":"0","recid":"6202","relation_version_is_last":true,"title":["OverlayFSを用いたコンテナに対するサービス妨害攻撃の防止"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-10-25T08:59:03.138344+00:00"}