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# Fuzzer environment on ClusterFuzz
Your fuzzers will be run on ClusterFuzz (Linux environment) with some
restrictions.
## Current working directory
You cannot make any assumptions about the current working directory of your
fuzzer. If you need to load data files, please use `argv[0]` to get the
directory where your fuzzer executable is located. This may change in the near
future.
## Filesystem
Everything except `/tmp` is read-only, including the directory that your fuzzer
executable lives in. Note that `/tmp` is limited in size (64MB).
## Network access
There will be no network interfaces available (not even loopback).
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