diff options
Diffstat (limited to 'nx-X11/extras/drm/bsd-core/drm_fops.c')
| -rw-r--r-- | nx-X11/extras/drm/bsd-core/drm_fops.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/nx-X11/extras/drm/bsd-core/drm_fops.c b/nx-X11/extras/drm/bsd-core/drm_fops.c new file mode 100644 index 000000000..f5c9349bf --- /dev/null +++ b/nx-X11/extras/drm/bsd-core/drm_fops.c @@ -0,0 +1,128 @@ +/* drm_fops.h -- File operations for DRM -*- linux-c -*- + * Created: Mon Jan 4 08:58:31 1999 by faith@valinux.com + */ +/*- + * 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 "drmP.h" + +drm_file_t *drm_find_file_by_proc(drm_device_t *dev, DRM_STRUCTPROC *p) +{ +#if __FreeBSD_version >= 500021 + uid_t uid = p->td_ucred->cr_svuid; + pid_t pid = p->td_proc->p_pid; +#else + uid_t uid = p->p_cred->p_svuid; + pid_t pid = p->p_pid; +#endif + drm_file_t *priv; + + DRM_SPINLOCK_ASSERT(&dev->dev_lock); + + TAILQ_FOREACH(priv, &dev->files, link) + if (priv->pid == pid && priv->uid == uid) + return priv; + return NULL; +} + +/* 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, + drm_device_t *dev) +{ + int m = minor(kdev); + drm_file_t *priv; + int retcode; + + if (flags & O_EXCL) + return EBUSY; /* No exclusive opens */ + dev->flags = flags; + + DRM_DEBUG("pid = %d, minor = %d\n", DRM_CURRENTPID, m); + + DRM_LOCK(); + priv = drm_find_file_by_proc(dev, p); + if (priv) { + priv->refs++; + } else { + priv = malloc(sizeof(*priv), M_DRM, M_NOWAIT | M_ZERO); + if (priv == NULL) { + DRM_UNLOCK(); + return DRM_ERR(ENOMEM); + } +#if __FreeBSD_version >= 500000 + priv->uid = p->td_ucred->cr_svuid; + priv->pid = p->td_proc->p_pid; +#else + priv->uid = p->p_cred->p_svuid; + priv->pid = p->p_pid; +#endif + + priv->refs = 1; + priv->minor = m; + priv->ioctl_count = 0; + + /* for compatibility root is always authenticated */ + priv->authenticated = DRM_SUSER(p); + + if (dev->driver.open) { + retcode = dev->driver.open(dev, priv); + if (retcode != 0) { + free(priv, M_DRM); + DRM_UNLOCK(); + return retcode; + } + } + + /* first opener automatically becomes master */ + priv->master = TAILQ_EMPTY(&dev->files); + + TAILQ_INSERT_TAIL(&dev->files, priv, link); + } + DRM_UNLOCK(); +#ifdef __FreeBSD__ + kdev->si_drv1 = dev; +#endif + 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; +} |