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-rw-r--r--docs/fdsan.md2
-rw-r--r--docs/fdtrack.md4
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diff --git a/docs/fdsan.md b/docs/fdsan.md
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@@ -2,6 +2,8 @@
[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?*
diff --git a/docs/fdtrack.md b/docs/fdtrack.md
index 5bc98602d..7cf6e1fe5 100644
--- a/docs/fdtrack.md
+++ b/docs/fdtrack.md
@@ -1,5 +1,9 @@
## 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.