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Aleksa Sarai
244c9fc426
This implements {createTTY, detach} and all of the combinations and
negations of the two that were previously implemented. There are some
valid questions about out-of-OCI-scope topics like !createTTY and how
things should be handled (why do we dup the current stdio to the
process, and how is that not a security issue). However, these will be
dealt with in a separate patchset.
In order to allow for late console setup, split setupRootfs into the
"preparation" section where all of the mounts are created and the
"finalize" section where we pivot_root and set things as ro. In between
the two we can set up all of the console mountpoints and symlinks we
need.
We use two-stage synchronisation to ensures that when the syscalls are
reordered in a suboptimal way, an out-of-place read() on the parentPipe
will not gobble the ancilliary information.
This patch is part of the console rewrite patchset.
Signed-off-by: Aleksa Sarai <asarai@suse.de>
19 lines
367 B
Go
19 lines
367 B
Go
package libcontainer
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import "io"
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// Console represents a pseudo TTY.
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type Console interface {
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io.ReadWriter
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io.Closer
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// Path returns the filesystem path to the slave side of the pty.
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Path() string
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// Fd returns the fd for the master of the pty.
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Fd() uintptr
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}
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// ConsoleData represents arbitrary setup data used when setting up console
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// handling. It is
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