mirror of https://github.com/docker/cli.git
33 lines
1.2 KiB
Markdown
33 lines
1.2 KiB
Markdown
### fifo
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[](https://travis-ci.org/containerd/fifo)
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Go package for handling fifos in a sane way.
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```
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// OpenFifo opens a fifo. Returns io.ReadWriteCloser.
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// Context can be used to cancel this function until open(2) has not returned.
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// Accepted flags:
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// - syscall.O_CREAT - create new fifo if one doesn't exist
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// - syscall.O_RDONLY - open fifo only from reader side
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// - syscall.O_WRONLY - open fifo only from writer side
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// - syscall.O_RDWR - open fifo from both sides, never block on syscall level
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// - syscall.O_NONBLOCK - return io.ReadWriteCloser even if other side of the
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// fifo isn't open. read/write will be connected after the actual fifo is
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// open or after fifo is closed.
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func OpenFifo(ctx context.Context, fn string, flag int, perm os.FileMode) (io.ReadWriteCloser, error)
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// Read from a fifo to a byte array.
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func (f *fifo) Read(b []byte) (int, error)
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// Write from byte array to a fifo.
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func (f *fifo) Write(b []byte) (int, error)
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// Close the fifo. Next reads/writes will error. This method can also be used
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// before open(2) has returned and fifo was never opened.
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func (f *fifo) Close() error
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```
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