Layering in Provenance Systems Kiran-Kumar Muniswamy-Reddy , Uri - - PowerPoint PPT Presentation

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layering in provenance systems
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Layering in Provenance Systems Kiran-Kumar Muniswamy-Reddy , Uri - - PowerPoint PPT Presentation

Feb 12, 2024 8 likes •549 views

Layering in Provenance Systems Kiran-Kumar Muniswamy-Reddy , Uri Braun, David A. Holland, Peter Macko, Diana Maclean, Daniel Margo, Margo Seltzer, Robin Smogor Observes system calls that applications make and infers relationships between

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Layering in Provenance Systems

Kiran-Kumar Muniswamy-Reddy,

Uri Braun, David A. Holland, Peter Macko, Diana Maclean, Daniel Margo, Margo Seltzer, Robin Smogor

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 Observes system calls that applications make and infers

relationships between objects

Process P A B read read C write

  • Prov. records
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PASS write

  • Prov. records

Application

  • Prov. records

read

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PASS write

  • Prov. records

Browser read

URL1 URL2 URL3

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PASS write Browser

URL1 virus.com

Browser knows virus came from virus.com, but doesn’t know which files were affected PASS knows which files were affected, but doesn’t know where the virus came from

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PASS write

  • Prov. records

Browser read

URL1 URL2 URL3

Need an interface to disclose file URL

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PASS write

  • Prov. records

Browser read

URL1 URL2 URL3

Plug-in module Need an interface to disclose plug-in algorithm browser

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PASS write

  • Prov. records

Browser read

URL1 URL2 URL3

Tab How do you represent a tab in PASS? Need to represent

  • bjects non-existent in

another layer

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PASS Browser

  • Prov. records

URL1 URL2 URL3

Tab write Writing prov and data separately can compromise consistency

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PASS Browser Tab Cache

URL Cycles

spanning layers

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PASS

  • Prov. records

Browser

URL1 URL2 URL3

Tab pass_write: File data + URL2

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PASS Browser Tab Cache Cache’ Issue pass_freeze

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PASS

  • Prov. records

Browser Tab fd = pass_mkobj pass_write( f d,..,URL1)

URL1

pass_write( f d,..,URL2)

URL2

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PASS Application fd = pass_mkobj pass_write( f d,…, file3) pass_write( f d,…, file2) pass_write( f d,…, file1) Data-set files

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 A set of wrappers to track provenance in

Python applications

 Wrap objects, modules, basic types, and

  • utput files

 Create Python bindings for DPAPI

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PASS

  • Prov. records

Browser Tab

URL1 URL2

Tab’s provenance: URL1, URL2 are not manifested on disk, until it writes to a file. If you want to save the provenance even without file write, use pass_sync

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