cdab8377da
but I inadvertently overwrote the change when I synced to git. Commit the fix in both places, so this doesn't happen again. Approved by: jhb (mentor) MFC after: 2 weeks
110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
/*-
|
|
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
|
|
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
|
|
* All Rights Reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* Authors:
|
|
* Rickard E. (Rik) Faith <faith@valinux.com>
|
|
* Daryll Strauss <daryll@valinux.com>
|
|
* Gareth Hughes <gareth@valinux.com>
|
|
*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/** @file drm_fops.c
|
|
* Support code for dealing with the file privates associated with each
|
|
* open of the DRM device.
|
|
*/
|
|
|
|
#include "dev/drm/drmP.h"
|
|
|
|
/* drm_open_helper is called whenever a process opens /dev/drm. */
|
|
int drm_open_helper(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p,
|
|
struct drm_device *dev)
|
|
{
|
|
struct drm_file *priv;
|
|
int m = dev2unit(kdev);
|
|
int retcode;
|
|
|
|
if (flags & O_EXCL)
|
|
return EBUSY; /* No exclusive opens */
|
|
dev->flags = flags;
|
|
|
|
DRM_DEBUG("pid = %d, minor = %d\n", DRM_CURRENTPID, m);
|
|
|
|
priv = malloc(sizeof(*priv), DRM_MEM_FILES, M_NOWAIT | M_ZERO);
|
|
if (priv == NULL) {
|
|
return ENOMEM;
|
|
}
|
|
|
|
retcode = devfs_set_cdevpriv(priv, drm_close);
|
|
if (retcode != 0) {
|
|
free(priv, DRM_MEM_FILES);
|
|
return retcode;
|
|
}
|
|
|
|
DRM_LOCK();
|
|
priv->dev = dev;
|
|
priv->uid = p->td_ucred->cr_svuid;
|
|
priv->pid = p->td_proc->p_pid;
|
|
priv->minor = m;
|
|
priv->ioctl_count = 0;
|
|
|
|
/* for compatibility root is always authenticated */
|
|
priv->authenticated = DRM_SUSER(p);
|
|
|
|
if (dev->driver->open) {
|
|
/* shared code returns -errno */
|
|
retcode = -dev->driver->open(dev, priv);
|
|
if (retcode != 0) {
|
|
devfs_clear_cdevpriv();
|
|
free(priv, DRM_MEM_FILES);
|
|
DRM_UNLOCK();
|
|
return retcode;
|
|
}
|
|
}
|
|
|
|
/* first opener automatically becomes master */
|
|
priv->master = TAILQ_EMPTY(&dev->files);
|
|
|
|
TAILQ_INSERT_TAIL(&dev->files, priv, link);
|
|
DRM_UNLOCK();
|
|
kdev->si_drv1 = dev;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* The drm_read and drm_poll are stubs to prevent spurious errors
|
|
* on older X Servers (4.3.0 and earlier) */
|
|
|
|
int drm_read(struct cdev *kdev, struct uio *uio, int ioflag)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int drm_poll(struct cdev *kdev, int events, DRM_STRUCTPROC *p)
|
|
{
|
|
return 0;
|
|
}
|