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RedirFS - Application on Directory Merging
Holášek, Petr ; Michal, Bohumil (referee) ; Kašpárek, Tomáš (advisor)
Main purpose of this work is to explore history and methods of directory unions, to make a proposal of design and finally to implement Linux kernel module that merges content of directories using RedirFS framework. We will discuss and solve related problems like namespace overlapping or underlying directories changes.
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RedirFS - Application on Data Compression
Podroužek, Jan ; Čejka, Rudolf (referee) ; Kašpárek, Tomáš (advisor)
This thesis in its first part examines the problems of developing linux kernel modules, specifically modules implementig RedirFS filters. In the next part it considers different types of copression algorithms and the implementation specifics on the CryptoAPI framework in the linux kernel. Finally it describes the design and operation of the CompFLT module that implements a RedirFS compression filter. Benchmarks done using the CompFLT module are presented in the last section.
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RedirFS - Application on Data Encryption
Zůna, Pavel ; Bidlo, Michal (referee) ; Kašpárek, Tomáš (advisor)
This thesis focuses on design and implementation of a cryptographic filter for the Redirecting Filesystem Framework (RedirFS for short) in the form of a Linux kernel module. It starts by giving the reader a general overview of modern cryptography and encryption. Before diving into the filter specifics, it takes a tour of the most important features of RedirFS. When done with introductory chapters, it describes the design choices made considering their benefits and limitations. The final chapter is completely devoted to cipherflt: a proof of concept implementation of the cryptographic filter.
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Porting of RedirFS on Other OS
Czerner, Lukáš ; Čejka, Rudolf (referee) ; Kašpárek, Tomáš (advisor)
This thesis describes preparation for porting as well aw porting itself of RedirFS Linux kernel module to FreeBSD. Basic differences between Linux and FreeBSD kernels are described as well as differences in implementation of the Virtual Filesystem, crucial part for RedirFS. Further there are described possibilities and different approaches to implementation RedirFS functionality to FreeBSD. Then, the possibilities are evaluated and ideal approach is proposed. Next chapters introduces required functionality of the new module as well as its solutions. Then the implementation details are described so the reader can very well understand how the new module works and how the required functionality is implemented into the module.
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Extending RedirFS to Userspace
Pírko, Jiří ; Čejka, Rudolf (referee) ; Kašpárek, Tomáš (advisor)
The purpose of this thesis is to consider the rigth way how to make a user space extension of RedirFS, which works as a Linux kernel module and implement it. There is described a model of user and kernel spaces used in Linux and how this two spaces can communicate with each other. There are several communication mechanisms described with a description of use. Bandwidth and latency tests for all these mechanisms are implemented. Measurement results are presented and the suitable mechanism is chosen. The second part of the thesis is focused on redirctl and urfs. The first solution represents the RedirFS control tool, the second is the implementation of user space filters.
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RedirFS - Application on Data Compression
Podroužek, Jan ; Čejka, Rudolf (referee) ; Kašpárek, Tomáš (advisor)
This thesis in its first part examines the problems of developing linux kernel modules, specifically modules implementig RedirFS filters. In the next part it considers different types of copression algorithms and the implementation specifics on the CryptoAPI framework in the linux kernel. Finally it describes the design and operation of the CompFLT module that implements a RedirFS compression filter. Benchmarks done using the CompFLT module are presented in the last section.
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RedirFS - Application on Data Encryption
Zůna, Pavel ; Bidlo, Michal (referee) ; Kašpárek, Tomáš (advisor)
This thesis focuses on design and implementation of a cryptographic filter for the Redirecting Filesystem Framework (RedirFS for short) in the form of a Linux kernel module. It starts by giving the reader a general overview of modern cryptography and encryption. Before diving into the filter specifics, it takes a tour of the most important features of RedirFS. When done with introductory chapters, it describes the design choices made considering their benefits and limitations. The final chapter is completely devoted to cipherflt: a proof of concept implementation of the cryptographic filter.
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Extending RedirFS to Userspace
Pírko, Jiří ; Čejka, Rudolf (referee) ; Kašpárek, Tomáš (advisor)
The purpose of this thesis is to consider the rigth way how to make a user space extension of RedirFS, which works as a Linux kernel module and implement it. There is described a model of user and kernel spaces used in Linux and how this two spaces can communicate with each other. There are several communication mechanisms described with a description of use. Bandwidth and latency tests for all these mechanisms are implemented. Measurement results are presented and the suitable mechanism is chosen. The second part of the thesis is focused on redirctl and urfs. The first solution represents the RedirFS control tool, the second is the implementation of user space filters.
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