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switch compat_drm_mapbufs() to drm_ioctl_kernel()

소스 검색 
Another horror like addbufs; this one is even uglier.  With that
done, drm_ioc32.c should be sane.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2017-05-25 16:24:20 -04:00
부모 6113252dd0
커밋 87d3ce1169
3개의 변경된 파일과 77개의 추가작업 그리고 65개의 파일을 삭제
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70
drivers/gpu/drm/drm_ioc32.c
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@@ -415,54 +415,52 @@ typedef struct drm_buf_map32 {
u32 list; /**< Buffer information */
} drm_buf_map32_t;
static int map_one_buf32(void *data, int idx, unsigned long virtual,
struct drm_buf *buf)
{
drm_buf_map32_t *request = data;
drm_buf_pub32_t __user *to = compat_ptr(request->list) + idx;
drm_buf_pub32_t v;
v.idx = buf->idx;
v.total = buf->total;
v.used = 0;
v.address = virtual + buf->offset;
if (copy_to_user(to, &v, sizeof(v)))
return -EFAULT;
return 0;
}
static int drm_legacy_mapbufs32(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_buf_map32_t *request = data;
void __user *v;
int err = __drm_legacy_mapbufs(dev, data, &request->count,
&v, map_one_buf32,
file_priv);
request->virtual = ptr_to_compat(v);
return err;
}
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;
struct drm_buf_map __user *request;
struct drm_buf_pub __user *list;
int i, err;
int count, actual;
size_t nbytes;
void __user *addr;
int err;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
count = req32.count;
list32 = (void __user *)(unsigned long)req32.list;
if (count < 0)
if (req32.count < 0)
return -EINVAL;
nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
request = compat_alloc_user_space(nbytes);
if (!request)
return -EFAULT;
list = (struct drm_buf_pub *) (request + 1);
if (__put_user(count, &request->count)
|| __put_user(list, &request->list))
return -EFAULT;
err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
err = drm_ioctl_kernel(file, drm_legacy_mapbufs32, &req32, DRM_AUTH);
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(struct drm_buf_pub, 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))
if (put_user(req32.count, &argp->count)
|| put_user(req32.virtual, &argp->virtual))
return -EFAULT;
return 0;
@@ -910,7 +908,7 @@ static struct {
DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
DRM_IOCTL32_DEF(DRM_IOCTL_MARK_BUFS, compat_drm_markbufs),
DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs),
[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)].fn = compat_drm_mapbufs,
DRM_IOCTL32_DEF(DRM_IOCTL_MAP_BUFS, compat_drm_mapbufs),
DRM_IOCTL32_DEF(DRM_IOCTL_FREE_BUFS, compat_drm_freebufs),
DRM_IOCTL32_DEF(DRM_IOCTL_RM_MAP, compat_drm_rmmap),
DRM_IOCTL32_DEF(DRM_IOCTL_SET_SAREA_CTX, compat_drm_setsareactx),