native_client_sdk/src/libraries/nacl_io/kernel_wrap_dummy.cc

   1 // Copyright (c) 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 // The Chromium build system defines __linux__ even for native client builds,
   6 // so guard against __native_client__ being defined as well.
   7 #if defined(WIN32) || defined(__APPLE__) || (defined(__linux__) && !defined(__native_client__))
   8
   9 #include <errno.h>
  10
  11 #include "nacl_io/kernel_wrap.h"
  12 #include "nacl_io/kernel_wrap_real.h"
  13
  14 // "real" functions, i.e. the unwrapped original functions. For Windows/Linux
  15 // host builds we don't wrap, so the real functions aren't accessible. In most
  16 // cases, we just fail.
  17
  18 int _real_close(int fd) {
  19   return ENOSYS;
  20 }
  21
  22 int _real_fstat(int fd, struct stat* buf) {
  23   return 0;
  24 }
  25
  26 int _real_getdents(int fd, void* nacl_buf, size_t nacl_count, size_t* nread) {
  27   return ENOSYS;
  28 }
  29
  30 int _real_lseek(int fd, off_t offset, int whence, off_t* new_offset) {
  31   return ENOSYS;
  32 }
  33
  34 int _real_mkdir(const char* pathname, mode_t mode) {
  35   return ENOSYS;
  36 }
  37
  38 int _real_mmap(void** addr,
  39                size_t length,
  40                int prot,
  41                int flags,
  42                int fd,
  43                off_t offset) {
  44   return ENOSYS;
  45 }
  46
  47 int _real_munmap(void* addr, size_t length) {
  48   return ENOSYS;
  49 }
  50
  51 int _real_open(const char* pathname, int oflag, mode_t mode, int* newfd) {
  52   return ENOSYS;
  53 }
  54
  55 int _real_open_resource(const char* file, int* fd) {
  56   return ENOSYS;
  57 }
  58
  59 int _real_read(int fd, void* buf, size_t count, size_t* nread) {
  60   *nread = count;
  61   return 0;
  62 }
  63
  64 int _real_rmdir(const char* pathname) {
  65   return ENOSYS;
  66 }
  67
  68 int _real_write(int fd, const void* buf, size_t count, size_t* nwrote) {
  69   int rtn = write(fd, buf, count);
  70   if (rtn < 0)
  71     return -1;
  72
  73   *nwrote = rtn;
  74   return 0;
  75 }
  76
  77 void _real_exit(int status) {
  78   exit(status);
  79 }
  80
  81 int _real_getcwd(char* pathname, size_t len) {
  82   return ENOSYS;
  83 }
  84
  85 int _real_isatty(int fd, int* result) {
  86   *result = isatty(fd);
  87   return *result ? 0 : -1;
  88 }
  89
  90 #endif
  91
  92 // The Chromium build system defines __linux__ even for native client builds,
  93 // so guard against __native_client__ being defined as well.
  94 #if defined(__APPLE__) || defined(__linux__) && !defined(__native_client__)
  95
  96 void kernel_wrap_init() {
  97 }
  98
  99 void kernel_wrap_uninit() {
 100 }
 101
 102 #endif