drivers/gpu/drm/i915/selftests/mock_drm.c

/*
 * Copyright © 2017 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 *
 */

#include "mock_drm.h"

static inline struct inode fake_inode(struct drm_i915_private *i915)
{
	return (struct inode){ .i_rdev = i915->drm.primary->index };
}

struct drm_file *mock_file(struct drm_i915_private *i915)
{
	struct inode inode = fake_inode(i915);
	struct file filp = {};
	struct drm_file *file;
	int err;

	err = drm_open(&inode, &filp);
	if (unlikely(err))
		return ERR_PTR(err);

	file = filp.private_data;
	file->authenticated = true;
	return file;
}

void mock_file_free(struct drm_i915_private *i915, struct drm_file *file)
{
	struct inode inode = fake_inode(i915);
	struct file filp = { .private_data = file };

	drm_release(&inode, &filp);
}