Bryan Boreham
50a8dc1383
Fetches addresses for every veth that is in a network namespace and attached to the specified bridge. Works by iterating over every process.
41 lines
851 B
Go
41 lines
851 B
Go
package main
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import (
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"strconv"
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"github.com/weaveworks/weave/common"
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weavenet "github.com/weaveworks/weave/net"
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)
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func processAddrs(args []string) error {
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if len(args) < 1 {
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cmdUsage("process-addrs", "<bridgeName>")
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}
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bridgeName := args[0]
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pred, err := common.ConnectedToBridgePredicate(bridgeName)
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if err != nil {
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if err == weavenet.ErrLinkNotFound {
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return nil
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}
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return err
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}
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pids, err := common.AllPids("/proc")
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if err != nil {
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return err
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}
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// NB: Because network namespaces (netns) are changed many times inside the loop,
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// it's NOT safe to exec any code depending on the root netns without
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// wrapping with WithNetNS*.
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for _, pid := range pids {
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netDevs, err := common.GetNetDevsWithPredicate(pid, pred)
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if err != nil {
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return err
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}
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printNetDevs(strconv.Itoa(pid), netDevs)
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}
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return nil
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}
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