Rename mount

native_client_sdk/src/libraries/nacl_mounts/kernel_proxy.h

-/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#ifndef LIBRARIES_NACL_MOUNTS_KERNEL_PROXY_H_
-#define LIBRARIES_NACL_MOUNTS_KERNEL_PROXY_H_
-
-#include <ppapi/c/pp_instance.h>
-#include <ppapi/c/ppb.h>
-#include <pthread.h>
-#include <map>
-#include <string>
-#include <vector>
-
-#include "nacl_mounts/kernel_object.h"
-#include "nacl_mounts/mount.h"
-#include "nacl_mounts/ostypes.h"
-#include "nacl_mounts/path.h"
-
-class KernelHandle;
-class Mount;
-class MountNode;
-class PepperInterface;
-
-// KernelProxy provide one-to-one mapping for libc kernel calls.  Calls to the
-// proxy will result in IO access to the provided Mount and MountNode objects.
-class KernelProxy : protected KernelObject {
- public:
-  typedef Mount* (*MountFactory_t)(int, StringMap_t&, PepperInterface*);
-  typedef std::map<std::string, std::string> StringMap_t;
-  typedef std::map<std::string, MountFactory_t> MountFactoryMap_t;
-
-  KernelProxy();
-  virtual ~KernelProxy();
-  // Takes ownership of |ppapi|.
-  // |ppapi| may be NULL. If so, no mount that uses pepper calls can be mounted.
-  virtual void Init(PepperInterface* ppapi);
-
-  // KernelHandle and FD allocation and manipulation functions.
-  virtual int open(const char *path, int oflag);
-  virtual int close(int fd);
-  virtual int dup(int fd);
-  virtual int dup2(int fd, int newfd);
-
-  // System calls handled by KernelProxy (not mount-specific)
-  virtual int chdir(const char* path);
-  virtual char* getcwd(char* buf, size_t size);
-  virtual char* getwd(char* buf);
-  virtual int mount(const char *source, const char *target, 
-      const char *filesystemtype, unsigned long mountflags, const void *data);
-  virtual int umount(const char *path);
-
-  // System calls that take a path as an argument:
-  // The kernel proxy will look for the Node associated to the path. To
-  // find the node, the kernel proxy calls the corresponding mount's GetNode()
-  // method. The corresponding  method will be called. If the node
-  // cannot be found, errno is set and -1 is returned.
-  virtual int chmod(const char *path, mode_t mode);
-  virtual int mkdir(const char *path, mode_t mode);
-  virtual int rmdir(const char *path);
-  virtual int stat(const char *path, struct stat *buf);
-
-  // System calls that take a file descriptor as an argument:
-  // The kernel proxy will determine to which mount the file
-  // descriptor's corresponding file handle belongs.  The
-  // associated mount's function will be called.
-  virtual ssize_t read(int fd, void *buf, size_t nbyte);
-  virtual ssize_t write(int fd, const void *buf, size_t nbyte);
-
-  virtual int fchmod(int fd, int prot);
-  virtual int fstat(int fd, struct stat *buf);
-  virtual int getdents(int fd, void *buf, unsigned int count);
-  virtual int fsync(int fd);
-  virtual int isatty(int fd);
-
-  // lseek() relies on the mount's Stat() to determine whether or not the
-  // file handle corresponding to fd is a directory
-  virtual off_t lseek(int fd, off_t offset, int whence);
-
-  // remove() uses the mount's GetNode() and Stat() to determine whether or
-  // not the path corresponds to a directory or a file.  The mount's Rmdir()
-  // or Unlink() is called accordingly.
-  virtual int remove(const char* path);
-  // unlink() is a simple wrapper around the mount's Unlink function.
-  virtual int unlink(const char* path);
-  // access() uses the Mount's Stat().
-  virtual int access(const char* path, int amode);
-
-  virtual int link(const char* oldpath, const char* newpath);
-  virtual int symlink(const char* oldpath, const char* newpath);
-
-protected:
-  MountFactoryMap_t factories_;
-  int dev_;
-  PepperInterface* ppapi_;
-
-  static KernelProxy *s_instance_;
-
-  DISALLOW_COPY_AND_ASSIGN(KernelProxy);
-};
-
-#endif  // LIBRARIES_NACL_MOUNTS_KERNEL_PROXY_H_