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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-05-24 20:11:03 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-05-27 21:39:30 +0200 |
| commit | 012c6741c6aa916e276a0dd2f1c0020041540206 (patch) | |
| tree | d95cd5af9403c97fae4abe00c262d3abbb4691a3 /drivers/gpu/drm/drm_ioc32.c | |
| parent | switch compat_drm_addbufs() to drm_ioctl_kernel() (diff) | |
| download | linux-012c6741c6aa916e276a0dd2f1c0020041540206.tar.xz linux-012c6741c6aa916e276a0dd2f1c0020041540206.zip | |
switch compat_drm_version() to drm_ioctl_kernel()
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 | 42 |
1 files changed, 16 insertions, 26 deletions
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c index e06289dbab44..db1db77f23da 100644 --- a/drivers/gpu/drm/drm_ioc32.c +++ b/drivers/gpu/drm/drm_ioc32.c @@ -33,6 +33,7 @@ #include <drm/drmP.h> #include "drm_legacy.h" +#include "drm_internal.h" #define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t) #define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t) @@ -88,39 +89,28 @@ static int compat_drm_version(struct file *file, unsigned int cmd, unsigned long arg) { drm_version32_t v32; - struct drm_version __user *version; + struct drm_version v; int err; if (copy_from_user(&v32, (void __user *)arg, sizeof(v32))) return -EFAULT; - version = compat_alloc_user_space(sizeof(*version)); - if (!version) - return -EFAULT; - if (__put_user(v32.name_len, &version->name_len) - || __put_user((void __user *)(unsigned long)v32.name, - &version->name) - || __put_user(v32.date_len, &version->date_len) - || __put_user((void __user *)(unsigned long)v32.date, - &version->date) - || __put_user(v32.desc_len, &version->desc_len) - || __put_user((void __user *)(unsigned long)v32.desc, - &version->desc)) - return -EFAULT; - - err = drm_ioctl(file, - DRM_IOCTL_VERSION, (unsigned long)version); + v = (struct drm_version) { + .name_len = v32.name_len, + .name = compat_ptr(v32.name), + .date_len = v32.date_len, + .date = compat_ptr(v32.date), + .desc_len = v32.desc_len, + .desc = compat_ptr(v32.desc), + }; + err = drm_ioctl_kernel(file, drm_version, &v, + DRM_UNLOCKED|DRM_RENDER_ALLOW|DRM_CONTROL_ALLOW); if (err) return err; - if (__get_user(v32.version_major, &version->version_major) - || __get_user(v32.version_minor, &version->version_minor) - || __get_user(v32.version_patchlevel, &version->version_patchlevel) - || __get_user(v32.name_len, &version->name_len) - || __get_user(v32.date_len, &version->date_len) - || __get_user(v32.desc_len, &version->desc_len)) - return -EFAULT; - + v32.version_major = v.version_major; + v32.version_minor = v.version_minor; + v32.version_patchlevel = v.version_patchlevel; if (copy_to_user((void __user *)arg, &v32, sizeof(v32))) return -EFAULT; return 0; @@ -1081,7 +1071,7 @@ static struct { char *name; } drm_compat_ioctls[] = { #define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n} - [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)].fn = compat_drm_version, + DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version), [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)].fn = compat_drm_getunique, [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)].fn = compat_drm_getmap, [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)].fn = compat_drm_getclient, |