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libct: initialize inheritFD in place 

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
This commit is contained in:
Kir Kolyshkin 2020-07-31 17:55:09 -07:00
parent 8b973997a4
commit e54d1e4715
1 changed files with 6 additions and 5 deletions
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11
libcontainer/container_linux.go
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@ -896,11 +896,12 @@ func (c *linuxContainer) handleRestoringExternalNamespaces(rpcOpts *criurpc.Criu
logrus.Errorf("If a specific network namespace is defined it must exist: %s", err)
return fmt.Errorf("Requested network namespace %v does not exist", nsPath)
}
inheritFd := new(criurpc.InheritFd)
inheritFd.Key = proto.String(criuNsToKey(t))
// The offset of four is necessary because 0, 1, 2 and 3 is already
// used by stdin, stdout, stderr, 'criu swrk' socket.
inheritFd.Fd = proto.Int32(int32(4 + len(*extraFiles)))
inheritFd := &criurpc.InheritFd{
Key: proto.String(criuNsToKey(t)),
// The offset of four is necessary because 0, 1, 2 and 3 are
// already used by stdin, stdout, stderr, 'criu swrk' socket.
Fd: proto.Int32(int32(4 + len(*extraFiles))),
}
rpcOpts.InheritFd = append(rpcOpts.InheritFd, inheritFd)
// All open FDs need to be transferred to CRIU via extraFiles
*extraFiles = append(*extraFiles, nsFd)