drm_ioc32.c

linux-2.6.15.6

	if (__get_user(s32.count, &stats->count))
		return -EFAULT;
	for (i = 0; i < 15; ++i)
		if (__get_user(s32.data[i].value, &stats->data[i].value)
		    || __get_user(s32.data[i].type, &stats->data[i].type))
			return -EFAULT;

	if (copy_to_user(argp, &s32, sizeof(s32)))
		return -EFAULT;
	return 0;
}

typedef struct drm_buf_desc32 {
	int count;		 /**< Number of buffers of this size */
	int size;		 /**< Size in bytes */
	int low_mark;		 /**< Low water mark */
	int high_mark;		 /**< High water mark */
	int flags;
	u32 agp_start;		 /**< Start address in the AGP aperture */
} drm_buf_desc32_t;

static int compat_drm_addbufs(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_buf_desc32_t __user *argp = (void __user *)arg;
	drm_buf_desc_t __user *buf;
	int err;
	unsigned long agp_start;

	buf = compat_alloc_user_space(sizeof(*buf));
	if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
	    || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
		return -EFAULT;

	if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
	    || __get_user(agp_start, &argp->agp_start)
	    || __put_user(agp_start, &buf->agp_start))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
	if (err)
		return err;

	if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
	    || __get_user(agp_start, &buf->agp_start)
	    || __put_user(agp_start, &argp->agp_start))
		return -EFAULT;

	return 0;
}

static int compat_drm_markbufs(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_buf_desc32_t b32;
	drm_buf_desc32_t __user *argp = (void __user *)arg;
	drm_buf_desc_t __user *buf;

	if (copy_from_user(&b32, argp, sizeof(b32)))
		return -EFAULT;

	buf = compat_alloc_user_space(sizeof(*buf));
	if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
		return -EFAULT;

	if (__put_user(b32.size, &buf->size)
	    || __put_user(b32.low_mark, &buf->low_mark)
	    || __put_user(b32.high_mark, &buf->high_mark))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
}

typedef struct drm_buf_info32 {
	int count;		/**< Entries in list */
	u32 list;
} drm_buf_info32_t;

static int compat_drm_infobufs(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_buf_info32_t req32;
	drm_buf_info32_t __user *argp = (void __user *)arg;
	drm_buf_desc32_t __user *to;
	drm_buf_info_t __user *request;
	drm_buf_desc_t __user *list;
	size_t nbytes;
	int i, err;
	int count, actual;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	count = req32.count;
	to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
	if (count < 0)
		count = 0;
	if (count > 0
	    && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
		return -EFAULT;

	nbytes = sizeof(*request) + count * sizeof(drm_buf_desc_t);
	request = compat_alloc_user_space(nbytes);
	if (!access_ok(VERIFY_WRITE, request, nbytes))
		return -EFAULT;
	list = (drm_buf_desc_t *) (request + 1);

	if (__put_user(count, &request->count)
	    || __put_user(list, &request->list))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_INFO_BUFS, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(actual, &request->count))
		return -EFAULT;
	if (count >= actual)
		for (i = 0; i < actual; ++i)
			if (__copy_in_user(&to[i], &list[i],
					   offsetof(drm_buf_desc_t, flags)))
				return -EFAULT;

	if (__put_user(actual, &argp->count))
		return -EFAULT;

	return 0;
}

typedef struct drm_buf_pub32 {
	int idx;		/**< Index into the master buffer list */
	int total;		/**< Buffer size */
	int used;		/**< Amount of buffer in use (for DMA) */
	u32 address;		/**< Address of buffer */
} drm_buf_pub32_t;

typedef struct drm_buf_map32 {
	int count;		/**< Length of the buffer list */
	u32 virtual;		/**< Mmap'd area in user-virtual */
	u32 list;		/**< Buffer information */
} drm_buf_map32_t;

static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
			      unsigned long arg)
{
	drm_buf_map32_t __user *argp = (void __user *)arg;
	drm_buf_map32_t req32;
	drm_buf_pub32_t __user *list32;
	drm_buf_map_t __user *request;
	drm_buf_pub_t __user *list;
	int i, err;
	int count, actual;
	size_t nbytes;
	void __user *addr;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;
	count = req32.count;
	list32 = (void __user *)(unsigned long)req32.list;

	if (count < 0)
		return -EINVAL;
	nbytes = sizeof(*request) + count * sizeof(drm_buf_pub_t);
	request = compat_alloc_user_space(nbytes);
	if (!access_ok(VERIFY_WRITE, request, nbytes))
		return -EFAULT;
	list = (drm_buf_pub_t *) (request + 1);

	if (__put_user(count, &request->count)
	    || __put_user(list, &request->list))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_MAP_BUFS, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(actual, &request->count))
		return -EFAULT;
	if (count >= actual)
		for (i = 0; i < actual; ++i)
			if (__copy_in_user(&list32[i], &list[i],
					   offsetof(drm_buf_pub_t, address))
			    || __get_user(addr, &list[i].address)
			    || __put_user((unsigned long)addr,
					  &list32[i].address))
				return -EFAULT;

	if (__put_user(actual, &argp->count)
	    || __get_user(addr, &request->virtual)
	    || __put_user((unsigned long)addr, &argp->virtual))
		return -EFAULT;

	return 0;
}

typedef struct drm_buf_free32 {
	int count;
	u32 list;
} drm_buf_free32_t;

static int compat_drm_freebufs(struct file *file, unsigned int cmd,
			       unsigned long arg)
{
	drm_buf_free32_t req32;
	drm_buf_free_t __user *request;
	drm_buf_free32_t __user *argp = (void __user *)arg;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
		return -EFAULT;
	if (__put_user(req32.count, &request->count)
	    || __put_user((int __user *)(unsigned long)req32.list,
			  &request->list))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_FREE_BUFS, (unsigned long)request);
}

typedef struct drm_ctx_priv_map32 {
	unsigned int ctx_id;	 /**< Context requesting private mapping */
	u32 handle;		/**< Handle of map */
} drm_ctx_priv_map32_t;

static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
				  unsigned long arg)
{
	drm_ctx_priv_map32_t req32;
	drm_ctx_priv_map_t __user *request;
	drm_ctx_priv_map32_t __user *argp = (void __user *)arg;

	if (copy_from_user(&req32, argp, sizeof(req32)))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
		return -EFAULT;
	if (__put_user(req32.ctx_id, &request->ctx_id)
	    || __put_user((void *)(unsigned long)req32.handle,
			  &request->handle))
		return -EFAULT;

	return drm_ioctl(file->f_dentry->d_inode, file,
			 DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
}

static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
				  unsigned long arg)
{
	drm_ctx_priv_map_t __user *request;
	drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
	int err;
	unsigned int ctx_id;
	void *handle;

	if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
	    || __get_user(ctx_id, &argp->ctx_id))
		return -EFAULT;

	request = compat_alloc_user_space(sizeof(*request));
	if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
		return -EFAULT;
	if (__put_user(ctx_id, &request->ctx_id))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
	if (err)
		return err;

	if (__get_user(handle, &request->handle)
	    || __put_user((unsigned long)handle, &argp->handle))
		return -EFAULT;

	return 0;
}

typedef struct drm_ctx_res32 {
	int count;
	u32 contexts;
} drm_ctx_res32_t;

static int compat_drm_resctx(struct file *file, unsigned int cmd,
			     unsigned long arg)
{
	drm_ctx_res32_t __user *argp = (void __user *)arg;
	drm_ctx_res32_t res32;
	drm_ctx_res_t __user *res;
	int err;

	if (copy_from_user(&res32, argp, sizeof(res32)))
		return -EFAULT;

	res = compat_alloc_user_space(sizeof(*res));
	if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
		return -EFAULT;
	if (__put_user(res32.count, &res->count)
	    || __put_user((drm_ctx_t __user *) (unsigned long)res32.contexts,
			  &res->contexts))
		return -EFAULT;

	err = drm_ioctl(file->f_dentry->d_inode, file,
			DRM_IOCTL_RES_CTX, (unsigned long)res);
	if (err)
		return err;

	if (__get_user(res32.count, &res->count)
	    || __put_user(res32.count, &argp->count))
		return -EFAULT;

	return 0;
}

typedef struct drm_dma32 {
	int context;		  /**< Context handle */
	int send_count;		  /**< Number of buffers to send */
	u32 send_indices;	  /**< List of handles to buffers */
	u32 send_sizes;		  /**< Lengths of data to send */
	drm_dma_flags_t flags;		  /**< Flags */
	int request_count;	  /**< Number of buffers requested */
	int request_size;	  /**< Desired size for buffers */
	u32 request_indices;	  /**< Buffer information */
	u32 request_sizes;
	int granted_count;	  /**< Number of buffers granted */
} drm_dma32_t;

static int compat_drm_dma(struct file *file, unsigned int cmd,
			  unsigned long arg)
{
	drm_dma32_t d32;
	drm_dma32_t __user *argp = (void __user *)arg;
	drm_dma_t __user *d;
	int err;

	if (copy_from_user(&d32, argp, sizeof(d32)))
		return -EFAULT;

	d = compat_alloc_user_space(sizeof(*d));
	if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
		return -EFAULT;

	if (__put_user(d32.context, &d->context)
	    || __put_user(d32.send_count, &d->send_count)
	    || __put_user((int __user *)(unsigned long)d32.send_indices,
			  &d->send_indices)
	    || __put_user((int __user *)(unsigned long)d32.send_sizes,
			  &d->send_sizes)
	    || __put_user(d32.flags, &d->flags)
	    || __put_user(d32.request_count, &d->request_count)
	    || __put_user((int __user *)(unsigned long)d32.request_indices,