mirror of
https://github.com/prometheus/node_exporter.git
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28 lines
759 B
Go
28 lines
759 B
Go
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//+build linux
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package netlink
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import (
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"fmt"
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"os"
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"golang.org/x/sys/unix"
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)
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// getThreadNetNS gets the network namespace file descriptor of the thread the current goroutine
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// is running on. Make sure to call runtime.LockOSThread() before this so the goroutine does not
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// get scheduled on another thread in the meantime.
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func getThreadNetNS() (int, error) {
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file, err := os.Open(fmt.Sprintf("/proc/%d/task/%d/ns/net", unix.Getpid(), unix.Gettid()))
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if err != nil {
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return -1, err
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}
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return int(file.Fd()), nil
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}
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// setThreadNetNS sets the network namespace of the thread of the current goroutine to
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// the namespace described by the user-provided file descriptor.
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func setThreadNetNS(fd int) error {
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return unix.Setns(fd, unix.CLONE_NEWNET)
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}
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