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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-05-25 13:24:59 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-07-04 13:16:23 -0400 |
| commit | 314ed7368cfcdf7936f2fa35dc48840344371847 (patch) | |
| tree | 81e68d3aaac61e5b2130a9a541b9b49d923b8269 /drivers/gpu/drm/drm_ioc32.c | |
| parent | e92673eddeadfa599b57e13fc0c26b03ed939479 (diff) | |
| download | lwn-314ed7368cfcdf7936f2fa35dc48840344371847.tar.gz lwn-314ed7368cfcdf7936f2fa35dc48840344371847.zip | |
compat_drm: switch sg ioctls
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/gpu/drm/drm_ioc32.c')
| -rw-r--r-- | drivers/gpu/drm/drm_ioc32.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c index b0d882022a1f..b986caa66430 100644 --- a/drivers/gpu/drm/drm_ioc32.c +++ b/drivers/gpu/drm/drm_ioc32.c @@ -761,23 +761,19 @@ static int compat_drm_sg_alloc(struct file *file, unsigned int cmd, unsigned long arg) { drm_scatter_gather32_t __user *argp = (void __user *)arg; - struct drm_scatter_gather __user *request; + struct drm_scatter_gather request; int err; - unsigned long x; - request = compat_alloc_user_space(sizeof(*request)); - if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) - || __get_user(x, &argp->size) - || __put_user(x, &request->size)) + if (get_user(request.size, &argp->size)) return -EFAULT; - err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request); + err = drm_ioctl_kernel(file, drm_legacy_sg_alloc, &request, + DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); if (err) return err; /* XXX not sure about the handle conversion here... */ - if (__get_user(x, &request->handle) - || __put_user(x >> PAGE_SHIFT, &argp->handle)) + if (put_user(request.handle >> PAGE_SHIFT, &argp->handle)) return -EFAULT; return 0; @@ -787,16 +783,14 @@ static int compat_drm_sg_free(struct file *file, unsigned int cmd, unsigned long arg) { drm_scatter_gather32_t __user *argp = (void __user *)arg; - struct drm_scatter_gather __user *request; + struct drm_scatter_gather request; unsigned long x; - request = compat_alloc_user_space(sizeof(*request)); - if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) - || __get_user(x, &argp->handle) - || __put_user(x << PAGE_SHIFT, &request->handle)) + if (get_user(x, &argp->handle)) return -EFAULT; - - return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request); + request.handle = x << PAGE_SHIFT; + return drm_ioctl_kernel(file, drm_legacy_sg_free, &request, + DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); } #if defined(CONFIG_X86) || defined(CONFIG_IA64) @@ -972,8 +966,8 @@ static struct { DRM_IOCTL32_DEF(DRM_IOCTL_AGP_BIND, compat_drm_agp_bind), DRM_IOCTL32_DEF(DRM_IOCTL_AGP_UNBIND, compat_drm_agp_unbind), #endif - [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)].fn = compat_drm_sg_alloc, - [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)].fn = compat_drm_sg_free, + DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc), + DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free), #if defined(CONFIG_X86) || defined(CONFIG_IA64) [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)].fn = compat_drm_update_draw, #endif |