PsAuxFile.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#ifndef _POSIX_PSAUXFILE_H
#define _POSIX_PSAUXFILE_H
 
#include "pedigree/kernel/utilities/Buffer.h"
 
#include "modules/drivers/x86/ps2mouse/Ps2MouseCallbackRegistry.h"
#include "modules/system/vfs/File.h"
 
class PsAuxFile : public File {
 public:
  PsAuxFile(String str, size_t inode, Filesystem* pParentFS, File* pParentNode)
      : File(str, 0, 0, 0, inode, pParentFS, 0, pParentNode),
        m_Lock(),
        m_Buffer(1024),
        m_MouseRegistration() {
    setPermissionsOnly(FILE_UR | FILE_UW | FILE_GR | FILE_GW | FILE_OR | FILE_OW);
    setUidOnly(0);
    setGidOnly(0);
  }
  ~PsAuxFile();
 
  bool initialise();
 
  uint64_t readBytewise(uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock = true);
  uint64_t writeBytewise(uint64_t location, uint64_t size, uintptr_t buffer, bool bCanBlock = true);
 
  virtual int select(bool bWriting = false, int timeout = 0);
 
 private:
  Mutex m_Lock;
  Buffer<uint8_t> m_Buffer;
  Ps2MouseCallbackRegistry::Registration m_MouseRegistration;
 
  static void subscriber(void* param, const void* buffer, size_t len);
 
  void handleIncoming(const void* buffer, size_t len);
 
  virtual bool isBytewise() const {
    return true;
  }
};
 
#endif