Release 4.7 drivers/gpu/drm/drm_auth.c
/*
* Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* All Rights Reserved.
*
* Author Rickard E. (Rik) Faith <faith@valinux.com>
* Author Gareth Hughes <gareth@valinux.com>
*
* 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
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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 <drm/drmP.h>
#include "drm_internal.h"
/**
* drm_getmagic - Get unique magic of a client
* @dev: DRM device to operate on
* @data: ioctl data containing the drm_auth object
* @file_priv: DRM file that performs the operation
*
* This looks up the unique magic of the passed client and returns it. If the
* client did not have a magic assigned, yet, a new one is registered. The magic
* is stored in the passed drm_auth object.
*
* Returns: 0 on success, negative error code on failure.
*/
int drm_getmagic(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
struct drm_auth *auth = data;
int ret = 0;
mutex_lock(&dev->struct_mutex);
if (!file_priv->magic) {
ret = idr_alloc(&file_priv->master->magic_map, file_priv,
1, 0, GFP_KERNEL);
if (ret >= 0)
file_priv->magic = ret;
}
auth->magic = file_priv->magic;
mutex_unlock(&dev->struct_mutex);
DRM_DEBUG("%u\n", auth->magic);
return ret < 0 ? ret : 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 45 | 39.47% | 2 | 16.67% |
| david herrmann | david herrmann | 38 | 33.33% | 1 | 8.33% |
| dave airlie | dave airlie | 18 | 15.79% | 5 | 41.67% |
| eric anholt | eric anholt | 6 | 5.26% | 2 | 16.67% |
| thomas hellstrom | thomas hellstrom | 5 | 4.39% | 1 | 8.33% |
| thomas gleixner | thomas gleixner | 2 | 1.75% | 1 | 8.33% |
| Total | 114 | 100.00% | 12 | 100.00% |
/**
* drm_authmagic - Authenticate client with a magic
* @dev: DRM device to operate on
* @data: ioctl data containing the drm_auth object
* @file_priv: DRM file that performs the operation
*
* This looks up a DRM client by the passed magic and authenticates it.
*
* Returns: 0 on success, negative error code on failure.
*/
int drm_authmagic(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_auth *auth = data;
struct drm_file *file;
DRM_DEBUG("%u\n", auth->magic);
mutex_lock(&dev->struct_mutex);
file = idr_find(&file_priv->master->magic_map, auth->magic);
if (file) {
file->authenticated = 1;
idr_replace(&file_priv->master->magic_map, NULL, auth->magic);
}
mutex_unlock(&dev->struct_mutex);
return file ? 0 : -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 45 | 41.67% | 1 | 12.50% |
| david herrmann | david herrmann | 34 | 31.48% | 1 | 12.50% |
| dave airlie | dave airlie | 15 | 13.89% | 4 | 50.00% |
| eric anholt | eric anholt | 14 | 12.96% | 2 | 25.00% |
| Total | 108 | 100.00% | 8 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 92 | 39.83% | 2 | 13.33% |
| david herrmann | david herrmann | 75 | 32.47% | 1 | 6.67% |
| dave airlie | dave airlie | 33 | 14.29% | 6 | 40.00% |
| eric anholt | eric anholt | 20 | 8.66% | 2 | 13.33% |
| thomas hellstrom | thomas hellstrom | 5 | 2.16% | 1 | 6.67% |
| daniel vetter | daniel vetter | 3 | 1.30% | 1 | 6.67% |
| thomas gleixner | thomas gleixner | 2 | 0.87% | 1 | 6.67% |
| david howells | david howells | 1 | 0.43% | 1 | 6.67% |
| Total | 231 | 100.00% | 15 | 100.00% |
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