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Merge "Say which API level fdsan/fdtrack appeared at." am: b82fcdaf36 am: 4112ac6712 am: ebd5ef4954

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Original change: https://android-review.googlesource.com/c/platform/bionic/+/1677042

Change-Id: Ibd1be0dc14ce64a5eb0e7c40ff249da63ba474e5
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Treehugger Robot 2021-04-17 01:29:43 +00:00 committed by Automerger Merge Worker
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docs/fdsan.md
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[TOC]
fdsan is a file descriptor sanitizer added to Android in API level 29.
### Background
*What problem is fdsan trying to solve? Why should I care?*

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docs/fdtrack.md
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## fdtrack
[TOC]
fdtrack is a file descriptor leak checker added to Android in API level 30.
fdtrack consists of two parts: a set of hooks in bionic to register a callback
that's invoked on file descriptor operations, and a library that implements a
hook to perform and store backtraces for file descriptor creation.