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author | Al Viro <viro@zeniv.linux.org.uk> | 2017-06-03 21:33:26 -0400 |
---|---|---|
committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-07-04 13:16:28 -0400 |
commit | aeba03903063e9fea885d32318e1546d9b7e83a8 (patch) | |
tree | 32d451fc92112d3c3a108d5516d11d70c2385b36 /drivers/gpu/drm/mga | |
parent | ff32d39b158a27b6a0f1bd6207ad31946c7043e0 (diff) | |
download | linux-aeba03903063e9fea885d32318e1546d9b7e83a8.tar.gz linux-aeba03903063e9fea885d32318e1546d9b7e83a8.tar.bz2 linux-aeba03903063e9fea885d32318e1546d9b7e83a8.zip |
mga: switch compat ioctls to drm_ioctl_kernel()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/gpu/drm/mga')
-rw-r--r-- | drivers/gpu/drm/mga/mga_drv.h | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/mga/mga_ioc32.c | 149 | ||||
-rw-r--r-- | drivers/gpu/drm/mga/mga_state.c | 2 |
3 files changed, 63 insertions, 90 deletions
diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h index 45cf363d25ad..a45bb22275a7 100644 --- a/drivers/gpu/drm/mga/mga_drv.h +++ b/drivers/gpu/drm/mga/mga_drv.h @@ -159,6 +159,8 @@ extern int mga_dma_bootstrap(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int mga_dma_init(struct drm_device *dev, void *data, struct drm_file *file_priv); +extern int mga_getparam(struct drm_device *dev, void *data, + struct drm_file *file_priv); extern int mga_dma_flush(struct drm_device *dev, void *data, struct drm_file *file_priv); extern int mga_dma_reset(struct drm_device *dev, void *data, diff --git a/drivers/gpu/drm/mga/mga_ioc32.c b/drivers/gpu/drm/mga/mga_ioc32.c index 729bfd56b55f..85f1a9cd3f85 100644 --- a/drivers/gpu/drm/mga/mga_ioc32.c +++ b/drivers/gpu/drm/mga/mga_ioc32.c @@ -61,46 +61,25 @@ static int compat_mga_init(struct file *file, unsigned int cmd, unsigned long arg) { drm_mga_init32_t init32; - drm_mga_init_t __user *init; - int err = 0, i; + drm_mga_init_t init; if (copy_from_user(&init32, (void __user *)arg, sizeof(init32))) return -EFAULT; - init = compat_alloc_user_space(sizeof(*init)); - if (!access_ok(VERIFY_WRITE, init, sizeof(*init)) - || __put_user(init32.func, &init->func) - || __put_user(init32.sarea_priv_offset, &init->sarea_priv_offset) - || __put_user(init32.chipset, &init->chipset) - || __put_user(init32.sgram, &init->sgram) - || __put_user(init32.maccess, &init->maccess) - || __put_user(init32.fb_cpp, &init->fb_cpp) - || __put_user(init32.front_offset, &init->front_offset) - || __put_user(init32.front_pitch, &init->front_pitch) - || __put_user(init32.back_offset, &init->back_offset) - || __put_user(init32.back_pitch, &init->back_pitch) - || __put_user(init32.depth_cpp, &init->depth_cpp) - || __put_user(init32.depth_offset, &init->depth_offset) - || __put_user(init32.depth_pitch, &init->depth_pitch) - || __put_user(init32.fb_offset, &init->fb_offset) - || __put_user(init32.mmio_offset, &init->mmio_offset) - || __put_user(init32.status_offset, &init->status_offset) - || __put_user(init32.warp_offset, &init->warp_offset) - || __put_user(init32.primary_offset, &init->primary_offset) - || __put_user(init32.buffers_offset, &init->buffers_offset)) - return -EFAULT; - - for (i = 0; i < MGA_NR_TEX_HEAPS; i++) { - err |= - __put_user(init32.texture_offset[i], - &init->texture_offset[i]); - err |= - __put_user(init32.texture_size[i], &init->texture_size[i]); - } - if (err) - return -EFAULT; - - return drm_ioctl(file, DRM_IOCTL_MGA_INIT, (unsigned long)init); + init.func = init32.func; + init.sarea_priv_offset = init32.sarea_priv_offset; + memcpy(&init.chipset, &init32.chipset, + offsetof(drm_mga_init_t, fb_offset) - + offsetof(drm_mga_init_t, chipset)); + init.fb_offset = init32.fb_offset; + init.mmio_offset = init32.mmio_offset; + init.status_offset = init32.status_offset; + init.warp_offset = init32.warp_offset; + init.primary_offset = init32.primary_offset; + init.buffers_offset = init32.buffers_offset; + + return drm_ioctl_kernel(file, mga_dma_init, &init, + DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); } typedef struct drm_mga_getparam32 { @@ -112,19 +91,14 @@ static int compat_mga_getparam(struct file *file, unsigned int cmd, unsigned long arg) { drm_mga_getparam32_t getparam32; - drm_mga_getparam_t __user *getparam; + drm_mga_getparam_t getparam; if (copy_from_user(&getparam32, (void __user *)arg, sizeof(getparam32))) return -EFAULT; - getparam = compat_alloc_user_space(sizeof(*getparam)); - if (!access_ok(VERIFY_WRITE, getparam, sizeof(*getparam)) - || __put_user(getparam32.param, &getparam->param) - || __put_user((void __user *)(unsigned long)getparam32.value, - &getparam->value)) - return -EFAULT; - - return drm_ioctl(file, DRM_IOCTL_MGA_GETPARAM, (unsigned long)getparam); + getparam.param = getparam32.param; + getparam.value = compat_ptr(getparam32.value); + return drm_ioctl_kernel(file, mga_getparam, &getparam, DRM_AUTH); } typedef struct drm_mga_drm_bootstrap32 { @@ -141,48 +115,33 @@ static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd, unsigned long arg) { drm_mga_dma_bootstrap32_t dma_bootstrap32; - drm_mga_dma_bootstrap_t __user *dma_bootstrap; + drm_mga_dma_bootstrap_t __user dma_bootstrap; int err; if (copy_from_user(&dma_bootstrap32, (void __user *)arg, sizeof(dma_bootstrap32))) return -EFAULT; - dma_bootstrap = compat_alloc_user_space(sizeof(*dma_bootstrap)); - if (!access_ok(VERIFY_WRITE, dma_bootstrap, sizeof(*dma_bootstrap)) - || __put_user(dma_bootstrap32.texture_handle, - &dma_bootstrap->texture_handle) - || __put_user(dma_bootstrap32.texture_size, - &dma_bootstrap->texture_size) - || __put_user(dma_bootstrap32.primary_size, - &dma_bootstrap->primary_size) - || __put_user(dma_bootstrap32.secondary_bin_count, - &dma_bootstrap->secondary_bin_count) - || __put_user(dma_bootstrap32.secondary_bin_size, - &dma_bootstrap->secondary_bin_size) - || __put_user(dma_bootstrap32.agp_mode, &dma_bootstrap->agp_mode) - || __put_user(dma_bootstrap32.agp_size, &dma_bootstrap->agp_size)) - return -EFAULT; + dma_bootstrap.texture_handle = dma_bootstrap32.texture_handle; + dma_bootstrap.texture_size = dma_bootstrap32.texture_size; + dma_bootstrap.primary_size = dma_bootstrap32.primary_size; + dma_bootstrap.secondary_bin_count = dma_bootstrap32.secondary_bin_count; + dma_bootstrap.secondary_bin_size = dma_bootstrap32.secondary_bin_size; + dma_bootstrap.agp_mode = dma_bootstrap32.agp_mode; + dma_bootstrap.agp_size = dma_bootstrap32.agp_size; - err = drm_ioctl(file, DRM_IOCTL_MGA_DMA_BOOTSTRAP, - (unsigned long)dma_bootstrap); + err = drm_ioctl_kernel(file, mga_dma_bootstrap, &dma_bootstrap, + DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY); if (err) return err; - if (__get_user(dma_bootstrap32.texture_handle, - &dma_bootstrap->texture_handle) - || __get_user(dma_bootstrap32.texture_size, - &dma_bootstrap->texture_size) - || __get_user(dma_bootstrap32.primary_size, - &dma_bootstrap->primary_size) - || __get_user(dma_bootstrap32.secondary_bin_count, - &dma_bootstrap->secondary_bin_count) - || __get_user(dma_bootstrap32.secondary_bin_size, - &dma_bootstrap->secondary_bin_size) - || __get_user(dma_bootstrap32.agp_mode, &dma_bootstrap->agp_mode) - || __get_user(dma_bootstrap32.agp_size, &dma_bootstrap->agp_size)) - return -EFAULT; - + dma_bootstrap32.texture_handle = dma_bootstrap.texture_handle; + dma_bootstrap32.texture_size = dma_bootstrap.texture_size; + dma_bootstrap32.primary_size = dma_bootstrap.primary_size; + dma_bootstrap32.secondary_bin_count = dma_bootstrap.secondary_bin_count; + dma_bootstrap32.secondary_bin_size = dma_bootstrap.secondary_bin_size; + dma_bootstrap32.agp_mode = dma_bootstrap.agp_mode; + dma_bootstrap32.agp_size = dma_bootstrap.agp_size; if (copy_to_user((void __user *)arg, &dma_bootstrap32, sizeof(dma_bootstrap32))) return -EFAULT; @@ -190,10 +149,14 @@ static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd, return 0; } -drm_ioctl_compat_t *mga_compat_ioctls[] = { - [DRM_MGA_INIT] = compat_mga_init, - [DRM_MGA_GETPARAM] = compat_mga_getparam, - [DRM_MGA_DMA_BOOTSTRAP] = compat_mga_dma_bootstrap, +static struct { + drm_ioctl_compat_t *fn; + char *name; +} mga_compat_ioctls[] = { +#define DRM_IOCTL32_DEF(n, f)[DRM_##n] = {.fn = f, .name = #n} + DRM_IOCTL32_DEF(MGA_INIT, compat_mga_init), + DRM_IOCTL32_DEF(MGA_GETPARAM, compat_mga_getparam), + DRM_IOCTL32_DEF(MGA_DMA_BOOTSTRAP, compat_mga_dma_bootstrap), }; /** @@ -208,19 +171,27 @@ drm_ioctl_compat_t *mga_compat_ioctls[] = { long mga_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { unsigned int nr = DRM_IOCTL_NR(cmd); + struct drm_file *file_priv = filp->private_data; drm_ioctl_compat_t *fn = NULL; int ret; if (nr < DRM_COMMAND_BASE) return drm_compat_ioctl(filp, cmd, arg); - if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(mga_compat_ioctls)) - fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE]; - - if (fn != NULL) - ret = (*fn) (filp, cmd, arg); - else - ret = drm_ioctl(filp, cmd, arg); - + if (nr >= DRM_COMMAND_BASE + ARRAY_SIZE(mga_compat_ioctls)) + return drm_ioctl(filp, cmd, arg); + + fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE].fn; + if (!fn) + return drm_ioctl(filp, cmd, arg); + + DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n", + task_pid_nr(current), + (long)old_encode_dev(file_priv->minor->kdev->devt), + file_priv->authenticated, + mga_compat_ioctls[nr - DRM_COMMAND_BASE].name); + ret = (*fn) (filp, cmd, arg); + if (ret) + DRM_DEBUG("ret = %d\n", ret); return ret; } diff --git a/drivers/gpu/drm/mga/mga_state.c b/drivers/gpu/drm/mga/mga_state.c index 792f924496fc..e5f6b735f575 100644 --- a/drivers/gpu/drm/mga/mga_state.c +++ b/drivers/gpu/drm/mga/mga_state.c @@ -1005,7 +1005,7 @@ static int mga_dma_blit(struct drm_device *dev, void *data, struct drm_file *fil return 0; } -static int mga_getparam(struct drm_device *dev, void *data, struct drm_file *file_priv) +int mga_getparam(struct drm_device *dev, void *data, struct drm_file *file_priv) { drm_mga_private_t *dev_priv = dev->dev_private; drm_mga_getparam_t *param = data; |