Esempi in C++ (Cpp) per _ostree_repo_ensure_loose_objdir_at

Esempio n. 1

File: ostree-repo-checkout.c Progetto: chuanchang/ostree

static gboolean
checkout_object_for_uncompressed_cache (OstreeRepo      *self,
                                        const char      *loose_path,
                                        GFileInfo       *src_info,
                                        GInputStream    *content,
                                        GCancellable    *cancellable,
                                        GError         **error)
{
  gboolean ret = FALSE;
  g_autofree char *temp_filename = NULL;
  g_autoptr(GOutputStream) temp_out = NULL;
  int fd;
  int res;
  guint32 file_mode;

  /* Don't make setuid files in uncompressed cache */
  file_mode = g_file_info_get_attribute_uint32 (src_info, "unix::mode");
  file_mode &= ~(S_ISUID|S_ISGID);

  if (!gs_file_open_in_tmpdir_at (self->tmp_dir_fd, file_mode,
                                  &temp_filename, &temp_out,
                                  cancellable, error))
    goto out;

  if (g_output_stream_splice (temp_out, content, 0, cancellable, error) < 0)
    goto out;

  if (!g_output_stream_flush (temp_out, cancellable, error))
    goto out;

  fd = g_file_descriptor_based_get_fd ((GFileDescriptorBased*)temp_out);

  if (!self->disable_fsync)
    {
      do
        res = fsync (fd);
      while (G_UNLIKELY (res == -1 && errno == EINTR));
      if (G_UNLIKELY (res == -1))
        {
          glnx_set_error_from_errno (error);
          goto out;
        }
    }

  if (!g_output_stream_close (temp_out, cancellable, error))
    goto out;

  if (!_ostree_repo_ensure_loose_objdir_at (self->uncompressed_objects_dir_fd,
                                            loose_path,
                                            cancellable, error))
    goto out;

  if (G_UNLIKELY (renameat (self->tmp_dir_fd, temp_filename,
                            self->uncompressed_objects_dir_fd, loose_path) == -1))
    {
      if (errno != EEXIST)
        {
          glnx_set_error_from_errno (error);
          g_prefix_error (error, "Storing file '%s': ", temp_filename);
          goto out;
        }
      else
        (void) unlinkat (self->tmp_dir_fd, temp_filename, 0);
    }

  ret = TRUE;
 out:
  return ret;
}

Esempio n. 2

static gboolean
checkout_object_for_uncompressed_cache (OstreeRepo      *self,
                                        const char      *loose_path,
                                        GFileInfo       *src_info,
                                        GInputStream    *content,
                                        GCancellable    *cancellable,
                                        GError         **error)
{
  gboolean ret = FALSE;
  g_autofree char *temp_filename = NULL;
  g_autoptr(GOutputStream) temp_out = NULL;
  glnx_fd_close int fd = -1;
  int res;
  guint32 file_mode;

  /* Don't make setuid files in uncompressed cache */
  file_mode = g_file_info_get_attribute_uint32 (src_info, "unix::mode");
  file_mode &= ~(S_ISUID|S_ISGID);

  if (!glnx_open_tmpfile_linkable_at (self->tmp_dir_fd, ".", O_WRONLY | O_CLOEXEC,
                                      &fd, &temp_filename,
                                      error))
    goto out;
  temp_out = g_unix_output_stream_new (fd, FALSE);

  if (g_output_stream_splice (temp_out, content, 0, cancellable, error) < 0)
    goto out;

  if (!g_output_stream_flush (temp_out, cancellable, error))
    goto out;

  if (!self->disable_fsync)
    {
      do
        res = fsync (fd);
      while (G_UNLIKELY (res == -1 && errno == EINTR));
      if (G_UNLIKELY (res == -1))
        {
          glnx_set_error_from_errno (error);
          goto out;
        }
    }

  if (!g_output_stream_close (temp_out, cancellable, error))
    goto out;

  if (fchmod (fd, file_mode) < 0)
    {
      glnx_set_error_from_errno (error);
      goto out;
    }

  if (!_ostree_repo_ensure_loose_objdir_at (self->uncompressed_objects_dir_fd,
                                            loose_path,
                                            cancellable, error))
    goto out;

  if (!glnx_link_tmpfile_at (self->tmp_dir_fd, GLNX_LINK_TMPFILE_NOREPLACE_IGNORE_EXIST,
                             fd, temp_filename,
                             self->uncompressed_objects_dir_fd, loose_path,
                             error))
    goto out;

  ret = TRUE;
 out:
  return ret;
}