* #define DRIVER_DESC "Matrox G200/G400"
* #define DRIVER_DATE "20001127"
*
- * #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( mga_ioctls )
- *
* #define drm_x mga_##x
* \endcode
*/
#include "drmP.h"
#include "drm_core.h"
-static int drm_version(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg);
+static int drm_version(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
/** Ioctl table */
-static drm_ioctl_desc_t drm_ioctls[] = {
- [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = {drm_version, 0},
- [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = {drm_getunique, 0},
- [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = {drm_getmagic, 0},
- [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = {drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = {drm_getmap, 0},
- [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = {drm_getclient, 0},
- [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = {drm_getstats, 0},
- [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = {drm_setversion, DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = {drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = {drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
-
- [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = {drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = {drm_rmmap_ioctl, DRM_AUTH},
-
- [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = {drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = {drm_getsareactx, DRM_AUTH},
-
- [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = {drm_addctx, DRM_AUTH|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = {drm_rmctx, DRM_AUTH|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = {drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = {drm_getctx, DRM_AUTH},
- [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = {drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = {drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = {drm_resctx, DRM_AUTH},
-
- [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = {drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = {drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
-
- [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = {drm_lock, DRM_AUTH},
- [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = {drm_unlock, DRM_AUTH},
-
- [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = {drm_noop, DRM_AUTH},
-
- [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = {drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = {drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = {drm_infobufs, DRM_AUTH},
- [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = {drm_mapbufs, DRM_AUTH},
- [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = {drm_freebufs, DRM_AUTH},
+static struct drm_ioctl_desc drm_ioctls[] = {
+ DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
+ DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
+ DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
+ DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
+ DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
+ DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
+ DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
/* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
- [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = {NULL, DRM_AUTH},
+ DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH),
- [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = {drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
+ DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
#if __OS_HAS_AGP
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = {drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = {drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = {drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = {drm_agp_info_ioctl, DRM_AUTH},
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = {drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = {drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = {drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = {drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
+ DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
+ DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
#endif
- [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = {drm_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
- [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = {drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
+ DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
- [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = {drm_wait_vblank, 0},
+ DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
- [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW)] = {drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
+ DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
};
-#define DRIVER_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
+#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
/**
* Take down the DRM device.
*
* \sa drm_device
*/
-int drm_lastclose(drm_device_t * dev)
+int drm_lastclose(struct drm_device * dev)
{
- drm_magic_entry_t *pt, *next;
- drm_map_list_t *r_list;
- drm_vma_entry_t *vma, *vma_next;
+ struct drm_magic_entry *pt, *next;
+ struct drm_map_list *r_list, *list_t;
+ struct drm_vma_entry *vma, *vma_temp;
int i;
DRM_DEBUG("\n");
if (dev->irq_enabled)
drm_irq_uninstall(dev);
- /* Free drawable information memory */
- for (i = 0; i < dev->drw_bitfield_length / sizeof(*dev->drw_bitfield);
- i++) {
- drm_drawable_info_t *info = drm_get_drawable_info(dev, i);
-
- if (info) {
- drm_free(info->rects, info->num_rects *
- sizeof(drm_clip_rect_t), DRM_MEM_BUFS);
- drm_free(info, sizeof(*info), DRM_MEM_BUFS);
- }
- }
-
mutex_lock(&dev->struct_mutex);
+
+ /* Free drawable information memory */
+ drm_drawable_free_all(dev);
del_timer(&dev->timer);
/* Clear pid list */
/* Clear AGP information */
if (drm_core_has_AGP(dev) && dev->agp) {
- drm_agp_mem_t *entry;
- drm_agp_mem_t *nexte;
+ struct drm_agp_mem *entry, *tempe;
/* Remove AGP resources, but leave dev->agp
intact until drv_cleanup is called. */
- for (entry = dev->agp->memory; entry; entry = nexte) {
- nexte = entry->next;
+ list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
if (entry->bound)
drm_unbind_agp(entry->memory);
drm_free_agp(entry->memory, entry->pages);
drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
}
- dev->agp->memory = NULL;
+ INIT_LIST_HEAD(&dev->agp->memory);
if (dev->agp->acquired)
drm_agp_release(dev);
}
/* Clear vma list (only built for debugging) */
- if (dev->vmalist) {
- for (vma = dev->vmalist; vma; vma = vma_next) {
- vma_next = vma->next;
- drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
- }
- dev->vmalist = NULL;
+ list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
+ list_del(&vma->head);
+ drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
}
- if (dev->maplist) {
- while (!list_empty(&dev->maplist->head)) {
- struct list_head *list = dev->maplist->head.next;
- r_list = list_entry(list, drm_map_list_t, head);
- drm_rmmap_locked(dev, r_list->map);
- }
+ list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) {
+ drm_rmmap_locked(dev, r_list->map);
+ r_list = NULL;
}
if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) {
if (dev->lock.hw_lock) {
dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */
- dev->lock.filp = NULL;
+ dev->lock.file_priv = NULL;
wake_up_interruptible(&dev->lock.lock_queue);
}
mutex_unlock(&dev->struct_mutex);
*
* \sa drm_init
*/
-static void drm_cleanup(drm_device_t * dev)
+static void drm_cleanup(struct drm_device * dev)
{
DRM_DEBUG("\n");
drm_lastclose(dev);
- if (dev->maplist) {
- drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
- dev->maplist = NULL;
- drm_ht_remove(&dev->map_hash);
- }
+ drm_ht_remove(&dev->map_hash);
drm_ctxbitmap_cleanup(dev);
void drm_exit(struct drm_driver *driver)
{
int i;
- drm_device_t *dev = NULL;
- drm_head_t *head;
+ struct drm_device *dev = NULL;
+ struct drm_head *head;
DRM_DEBUG("\n");
EXPORT_SYMBOL(drm_exit);
/** File operations structure */
-static struct file_operations drm_stub_fops = {
+static const struct file_operations drm_stub_fops = {
.owner = THIS_MODULE,
.open = drm_stub_open
};
*
* Fills in the version information in \p arg.
*/
-static int drm_version(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+static int drm_version(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_version_t __user *argp = (void __user *)arg;
- drm_version_t version;
+ struct drm_version *version = data;
int len;
- if (copy_from_user(&version, argp, sizeof(version)))
- return -EFAULT;
-
- version.version_major = dev->driver->major;
- version.version_minor = dev->driver->minor;
- version.version_patchlevel = dev->driver->patchlevel;
- DRM_COPY(version.name, dev->driver->name);
- DRM_COPY(version.date, dev->driver->date);
- DRM_COPY(version.desc, dev->driver->desc);
+ version->version_major = dev->driver->major;
+ version->version_minor = dev->driver->minor;
+ version->version_patchlevel = dev->driver->patchlevel;
+ DRM_COPY(version->name, dev->driver->name);
+ DRM_COPY(version->date, dev->driver->date);
+ DRM_COPY(version->desc, dev->driver->desc);
- if (copy_to_user(argp, &version, sizeof(version)))
- return -EFAULT;
return 0;
}
* Called whenever a process performs an ioctl on /dev/drm.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument.
* \return zero on success or negative number on failure.
int drm_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_ioctl_desc_t *ioctl;
+ struct drm_file *file_priv = filp->private_data;
+ struct drm_device *dev = file_priv->head->dev;
+ struct drm_ioctl_desc *ioctl;
drm_ioctl_t *func;
unsigned int nr = DRM_IOCTL_NR(cmd);
int retcode = -EINVAL;
+ char *kdata = NULL;
atomic_inc(&dev->ioctl_count);
atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
- ++priv->ioctl_count;
+ ++file_priv->ioctl_count;
DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
current->pid, cmd, nr,
- (long)old_encode_dev(priv->head->device),
- priv->authenticated);
+ (long)old_encode_dev(file_priv->head->device),
+ file_priv->authenticated);
- if (nr < DRIVER_IOCTL_COUNT)
- ioctl = &drm_ioctls[nr];
- else if ((nr >= DRM_COMMAND_BASE)
- && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
+ if ((nr >= DRM_CORE_IOCTL_COUNT) &&
+ ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))
+ goto err_i1;
+ if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) &&
+ (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
+ else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE))
+ ioctl = &drm_ioctls[nr];
else
goto err_i1;
if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
func = dev->driver->dma_ioctl;
+
if (!func) {
DRM_DEBUG("no function\n");
retcode = -EINVAL;
} else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) ||
- ((ioctl->flags & DRM_AUTH) && !priv->authenticated) ||
- ((ioctl->flags & DRM_MASTER) && !priv->master)) {
+ ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
+ ((ioctl->flags & DRM_MASTER) && !file_priv->master)) {
retcode = -EACCES;
} else {
- retcode = func(inode, filp, cmd, arg);
+ if (cmd & (IOC_IN | IOC_OUT)) {
+ kdata = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
+ if (!kdata)
+ return -ENOMEM;
+ }
+
+ if (cmd & IOC_IN) {
+ if (copy_from_user(kdata, (void __user *)arg,
+ _IOC_SIZE(cmd)) != 0) {
+ retcode = -EACCES;
+ goto err_i1;
+ }
+ }
+ retcode = func(dev, kdata, file_priv);
+
+ if (cmd & IOC_OUT) {
+ if (copy_to_user((void __user *)arg, kdata,
+ _IOC_SIZE(cmd)) != 0)
+ retcode = -EACCES;
+ }
}
err_i1:
+ if (kdata)
+ kfree(kdata);
atomic_dec(&dev->ioctl_count);
if (retcode)
DRM_DEBUG("ret = %x\n", retcode);
}
EXPORT_SYMBOL(drm_ioctl);
+
+drm_local_map_t *drm_getsarea(struct drm_device *dev)
+{
+ struct drm_map_list *entry;
+
+ list_for_each_entry(entry, &dev->maplist, head) {
+ if (entry->map && entry->map->type == _DRM_SHM &&
+ (entry->map->flags & _DRM_CONTAINS_LOCK)) {
+ return entry->map;
+ }
+ }
+ return NULL;
+}
+EXPORT_SYMBOL(drm_getsarea);
projects / linux-2.6 / blobdiff