native_client_sdk/src/libraries/nacl_io/filesystem.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "nacl_io/filesystem.h"
   6
   7 #include <errno.h>
   8 #include <fcntl.h>
   9 #include <stdarg.h>
  10
  11 #include <string>
  12
  13 #include "nacl_io/dir_node.h"
  14 #include "nacl_io/log.h"
  15 #include "nacl_io/node.h"
  16 #include "nacl_io/osstat.h"
  17 #include "nacl_io/path.h"
  18 #include "sdk_util/auto_lock.h"
  19 #include "sdk_util/ref_object.h"
  20
  21 #if defined(WIN32)
  22 #include <windows.h>
  23 #endif
  24
  25 namespace nacl_io {
  26
  27 Filesystem::Filesystem() : dev_(0) {
  28 }
  29
  30 Filesystem::~Filesystem() {
  31 }
  32
  33 Error Filesystem::Init(const FsInitArgs& args) {
  34   dev_ = args.dev;
  35   ppapi_ = args.ppapi;
  36   return 0;
  37 }
  38
  39 void Filesystem::Destroy() {
  40 }
  41
  42 Error Filesystem::Open(const Path& path,
  43                        int open_flags,
  44                        ScopedNode* out_node) {
  45   return OpenWithMode(path, open_flags, 0666, out_node);
  46 }
  47
  48 Error Filesystem::OpenResource(const Path& path, ScopedNode* out_node) {
  49   out_node->reset(NULL);
  50   LOG_TRACE("Can't open resource: %s", path.Join().c_str());
  51   return EINVAL;
  52 }
  53
  54 void Filesystem::OnNodeCreated(Node* node) {
  55   node->stat_.st_ino = inode_pool_.Acquire();
  56   node->stat_.st_dev = dev_;
  57 }
  58
  59 void Filesystem::OnNodeDestroyed(Node* node) {
  60   if (node->stat_.st_ino)
  61     inode_pool_.Release(node->stat_.st_ino);
  62 }
  63
  64 Error Filesystem::Filesystem_VIoctl(int request, va_list args) {
  65   LOG_ERROR("Unsupported ioctl: %#x", request);
  66   return EINVAL;
  67 }
  68
  69 Error Filesystem::Filesystem_Ioctl(int request, ...) {
  70   va_list args;
  71   va_start(args, request);
  72   Error error = Filesystem_VIoctl(request, args);
  73   va_end(args);
  74   return error;
  75 }
  76
  77 }  // namespace nacl_io