[NaCl SDK] nacl_io: Enable isatty running under sel_ldr.

native_client_sdk/src/libraries/nacl_io/kernel_wrap_newlib.cc

 // 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.
 
 #include <sys/types.h>  // Include something that will define __GLIBC__.
 
 // The entire file is wrapped in this #if. We do this so this .cc file can be
 // compiled, even on a non-newlib build.
 #if defined(__native_client__) && !defined(__GLIBC__)
 
@@ skipping 49 matching lines @@
   OP(fdio, read); \
   OP(fdio, write); \
   OP(fdio, seek); \
   OP(fdio, fstat); \
   OP(fdio, getdents); \
   OP(dev_fdio, fchdir); \
   OP(dev_fdio, fchmod); \
   OP(dev_fdio, fsync); \
   OP(dev_fdio, fdatasync); \
   OP(dev_fdio, ftruncate); \
+  OP(dev_fdio, isatty); \
   OP(dev_filename, open); \
   OP(dev_filename, stat); \
   OP(dev_filename, mkdir); \
   OP(dev_filename, rmdir); \
   OP(dev_filename, chdir); \
   OP(dev_filename, getcwd); \
   OP(dev_filename, unlink); \
   OP(dev_filename, truncate); \
   OP(dev_filename, lstat); \
   OP(dev_filename, link); \
@@ skipping 65 matching lines @@
 }
 
 int WRAP(fdatasync)(int fd) {
   return (ki_fdatasync(fd) < 0) ? errno : 0;
 }
 
 int WRAP(ftruncate)(int fd, off_t length) {
   return (ki_ftruncate(fd, length) < 0) ? errno : 0;
 }
 
+int WRAP(isatty)(int fd, int* result) {
+  *result = ki_isatty(fd);
+  if (*result == 1)
+    return errno;
+  return 0;
+}
+
 int WRAP(mmap)(void** addr, size_t length, int prot, int flags, int fd,
                off_t offset) {
   if (flags & MAP_ANONYMOUS)
     return REAL(mmap)(addr, length, prot, flags, fd, offset);
 
   *addr = ki_mmap(*addr, length, prot, flags, fd, offset);
   return *addr == (void*)-1 ? errno : 0;
 }
 
 int WRAP(munmap)(void* addr, size_t length) {
@@ skipping 94 matching lines @@
 int _real_close(int fd) {
   CHECK_REAL(close);
   return REAL(close)(fd);
 }
 
 int _real_fstat(int fd, struct stat* buf) {
   CHECK_REAL(fstat);
   return REAL(fstat)(fd, buf);
 }
 
+int _real_isatty(int fd, int* result) {
+  CHECK_REAL(isatty);
+  return REAL(isatty)(fd, result);
+}
+
 int _real_getdents(int fd, void* nacl_buf, size_t nacl_count, size_t* nread) {
   CHECK_REAL(getdents);
   return REAL(getdents)(fd, static_cast<dirent*>(nacl_buf), nacl_count, nread);
 }
 
 int _real_lseek(int fd, off_t offset, int whence, off_t* new_offset) {
   CHECK_REAL(seek);
   return REAL(seek)(fd, offset, whence, new_offset);
 }
 
@@ skipping 48 matching lines @@
 void kernel_wrap_uninit() {
   if (s_wrapped) {
     EXPAND_SYMBOL_LIST_OPERATION(USE_REAL)
     s_wrapped = false;
   }
 }
 
 EXTERN_C_END
 
 #endif  // defined(__native_client__) && !defined(__GLIBC__)