[NaCl SDK] nacl_io: Fix utime() on directories.

native_client_sdk/src/libraries/nacl_io/kernel_proxy.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 "nacl_io/kernel_proxy.h"
 
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
@@ skipping 191 matching lines @@
     errno = error;
     return -1;
   }
 
   return AllocateFD(handle, path);
 }
 
 int KernelProxy::open(const char* path, int open_flags, mode_t mode) {
   ScopedFilesystem fs;
   ScopedNode node;
-  mode_t mask = ~GetUmask();
+  mode_t mask = ~GetUmask() & 0777;
 
   Error error = AcquireFsAndNode(path, open_flags, mode & mask, &fs, &node);
   if (error) {
     errno = error;
     return -1;
   }
 
   ScopedKernelHandle handle(new KernelHandle(fs, node));
   error = handle->Init(open_flags);
   if (error) {
@@ skipping 142 matching lines @@
 int KernelProxy::mkdir(const char* path, mode_t mode) {
   ScopedFilesystem fs;
   Path rel;
 
   Error error = AcquireFsAndRelPath(path, &fs, &rel);
   if (error) {
     errno = error;
     return -1;
   }
 
-  error = fs->Mkdir(rel, mode & ~GetUmask());
+  mode_t mask = ~GetUmask() & 0777;
+  error = fs->Mkdir(rel, mode & mask);
   if (error) {
     errno = error;
     return -1;
   }
 
   return 0;
 }
 
 int KernelProxy::rmdir(const char* path) {
   ScopedFilesystem fs;
@@ skipping 399 matching lines @@
 int KernelProxy::truncate(const char* path, off_t len) {
   ScopedFilesystem fs;
   ScopedNode node;
 
   Error error = AcquireFsAndNode(path, O_WRONLY, 0, &fs, &node);
   if (error) {
     errno = error;
     return -1;
   }
 
+  // Directories cannot be truncated.
+  if (node->IsaDir()) {
+    return EISDIR;
+  }
+
   if (!node->CanOpen(O_WRONLY)) {
     errno = EACCES;
     return -1;
   }
 
   error = node->FTruncate(len);
   if (error) {
     errno = error;
     return -1;
   }
@@ skipping 61 matching lines @@
 }
 
 int KernelProxy::fchmod(int fd, mode_t mode) {
   ScopedKernelHandle handle;
   Error error = AcquireHandle(fd, &handle);
   if (error) {
     errno = error;
     return -1;
   }
 
-  error = handle->node()->Fchmod(mode);
+  error = handle->node()->Fchmod(mode & 0777);
   if (error) {
     errno = error;
     return -1;
   }
 
   return 0;
 }
 
 int KernelProxy::fcntl(int fd, int request, va_list args) {
   Error error = 0;
@@ skipping 290 matching lines @@
       errno = EINVAL;
       return -1;
   }
 
   // Unknown signum
   errno = EINVAL;
   return -1;
 }
 
 mode_t KernelProxy::umask(mode_t mask) {
-  return SetUmask(mask);
+  return SetUmask(mask & 0777);
 }
 
 #ifdef PROVIDES_SOCKET_API
 
 int KernelProxy::select(int nfds,
                         fd_set* readfds,
                         fd_set* writefds,
                         fd_set* exceptfds,
                         struct timeval* timeout) {
   std::vector<pollfd> pollfds;
@@ skipping 614 matching lines @@
     errno = ENOTSOCK;
     return -1;
   }
 
   return 0;
 }
 
 #endif  // PROVIDES_SOCKET_API
 
 }  // namespace_nacl_io