1// +build linux freebsd 2 3package fileutils // import "github.com/ory/dockertest/docker/pkg/fileutils" 4 5import ( 6 "fmt" 7 "io/ioutil" 8 "os" 9 10 "github.com/sirupsen/logrus" 11) 12 13// GetTotalUsedFds Returns the number of used File Descriptors by 14// reading it via /proc filesystem. 15func GetTotalUsedFds() int { 16 if fds, err := ioutil.ReadDir(fmt.Sprintf("/proc/%d/fd", os.Getpid())); err != nil { 17 logrus.Errorf("Error opening /proc/%d/fd: %s", os.Getpid(), err) 18 } else { 19 return len(fds) 20 } 21 return -1 22} 23