src/slave/containerizer/mesos/mount.hpp

// Licensed to the Apache Software Foundation (ASF) under one
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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
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#ifndef __MESOS_CONTAINERIZER_MOUNT_HPP__
#define __MESOS_CONTAINERIZER_MOUNT_HPP__

#include <stout/option.hpp>
#include <stout/subcommand.hpp>

namespace mesos {
namespace internal {
namespace slave {

// "mount" subcommand functions similarly to the mount program.
// However, this subcommand is necessary because of the following reasons:
// - `mount --make-rslave <dir>` doesn't work on ubuntu 14.04 due to an existing
//    bug.
// - mount program only handles mounts that is recorded in /etc/mtab and
//   /etc/fstab, and ignores mounts that are done via mount syscall.
//   We need this subcommand so we can effect all mounts.
class MesosContainerizerMount : public Subcommand
{
public:
  static const std::string NAME;
  static const std::string MAKE_RSLAVE;

  struct Flags : public virtual flags::FlagsBase
  {
    Flags();

    Option<std::string> operation;
    Option<std::string> path;
  };

  MesosContainerizerMount() : Subcommand(NAME) {}

  Flags flags;

protected:
  int execute() override;
  flags::FlagsBase* getFlags() override { return &flags; }
};

} // namespace slave {
} // namespace internal {
} // namespace mesos {

#endif // __MESOS_CONTAINERIZER_MOUNT_HPP__