8c6ba35038
This pulls in and uses github.com/docker/docker/pkg/chrootarchive for the actual copy up which is some battle hardened code to unpack avoiding things like symlink traversal security issues. However it does pull in a pretty huge pile of vendoring, including github.com/docker/docker/pkg/reexec which we must then call at startup. It's not immediately clear that this tradeoff is the correct one. Signed-off-by: Ian Campbell <ijc@docker.com>
28 lines
450 B
Go
28 lines
450 B
Go
package fileutils
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import (
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"os"
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"os/exec"
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"strconv"
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"strings"
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)
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// GetTotalUsedFds returns the number of used File Descriptors by
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// executing `lsof -p PID`
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func GetTotalUsedFds() int {
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pid := os.Getpid()
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cmd := exec.Command("lsof", "-p", strconv.Itoa(pid))
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output, err := cmd.CombinedOutput()
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if err != nil {
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return -1
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}
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outputStr := strings.TrimSpace(string(output))
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fds := strings.Split(outputStr, "\n")
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return len(fds) - 1
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}
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