| // +build linux freebsd |
| |
| package logger // import "github.com/docker/docker/daemon/logger" |
| |
| import ( |
| "context" |
| "io" |
| |
| "github.com/containerd/fifo" |
| "github.com/pkg/errors" |
| "golang.org/x/sys/unix" |
| ) |
| |
| func openPluginStream(a *pluginAdapter) (io.WriteCloser, error) { |
| // Make sure to also open with read (in addition to write) to avoid borken pipe errors on plugin failure. |
| // It is up to the plugin to keep track of pipes that it should re-attach to, however. |
| // If the plugin doesn't open for reads, then the container will block once the pipe is full. |
| f, err := fifo.OpenFifo(context.Background(), a.fifoPath, unix.O_RDWR|unix.O_CREAT|unix.O_NONBLOCK, 0700) |
| if err != nil { |
| return nil, errors.Wrapf(err, "error creating i/o pipe for log plugin: %s", a.Name()) |
| } |
| return f, nil |
| } |