From dad07ca71719598bc990dbdbeda763d15a10e98b Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Tue, 17 Nov 2009 14:41:25 -0800 Subject: [PATCH] drm: check return values in drm_version In drm_version, actually check the results from function calls so that we're not potentially passing garbage back to userspace. Signed-off-by: Andres Salomon Signed-off-by: Andrew Morton Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_drv.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index ec0e3ae8c09d..5bd3f9461e2d 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -403,15 +403,21 @@ static int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_version *version = data; + int err; version->version_major = dev->driver->major; version->version_minor = dev->driver->minor; version->version_patchlevel = dev->driver->patchlevel; - drm_copy_field(version->name, &version->name_len, dev->driver->name); - drm_copy_field(version->date, &version->date_len, dev->driver->date); - drm_copy_field(version->desc, &version->desc_len, dev->driver->desc); - - return 0; + err = drm_copy_field(version->name, &version->name_len, + dev->driver->name); + if (!err) + err = drm_copy_field(version->date, &version->date_len, + dev->driver->date); + if (!err) + err = drm_copy_field(version->desc, &version->desc_len, + dev->driver->desc); + + return err; } /** -- GitLab