fuzz-walker/walker/walkers/readFuzz/readFuzz.go

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package main
import (
"fmt"
"io"
"io/ioutil"
"os"
"time"
"git.thisco.de/vbatts/fuzz-walker/walker"
)
func NewFuzzer() (walker.Fuzzer, error) {
return &myFuzzer{}, nil
}
type myFuzzer struct{}
func (mf myFuzzer) Name() string {
return "readFuzz"
}
func (mf myFuzzer) Func(path string, info os.FileInfo, timeout time.Duration) error {
c1 := make(chan error, 1)
go func() {
fd, err := os.Open(path)
if err != nil {
c1 <- err
}
defer fd.Close()
_, err = io.Copy(ioutil.Discard, fd)
c1 <- err
}()
select {
case err := <-c1:
return err
case <-time.After(timeout):
return fmt.Errorf("timeout reached")
}
return nil
}