Messages in this thread Patch in this message | | | Date | Wed, 11 Jun 2003 16:18:23 +0530 | From | Dipankar Sarma <> | Subject | Re: Misc 2.5 Fixes: cp-user-vicam |
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The patch I sent yesterday is bad, turns out I didn't enable vicam config option while compiling. Here is a replacement patch that actually compiles.
Fix handling of user bufs (arg), use copy_from_user.
drivers/usb/media/vicam.c | 28 +++++++++++++++++++--------- 1 files changed, 19 insertions(+), 9 deletions(-)
diff -puN drivers/usb/media/vicam.c~cp-user-vicam drivers/usb/media/vicam.c --- linux-2.5.70-ds/drivers/usb/media/vicam.c~cp-user-vicam 2003-06-11 16:00:42.000000000 +0530 +++ linux-2.5.70-ds-dipankar/drivers/usb/media/vicam.c 2003-06-11 16:14:06.000000000 +0530 @@ -611,15 +611,20 @@ vicam_ioctl(struct inode *inode, struct case VIDIOCSPICT: { - struct video_picture *vp = (struct video_picture *) arg; + struct video_picture vp; - DBG("VIDIOCSPICT depth = %d, pal = %d\n", vp->depth, - vp->palette); + if (copy_from_user(&vp, arg, sizeof (vp))) { + retval = -EFAULT; + break; + } - cam->gain = vp->brightness >> 8; + DBG("VIDIOCSPICT depth = %d, pal = %d\n", vp.depth, + vp.palette); - if (vp->depth != 24 - || vp->palette != VIDEO_PALETTE_RGB24) + cam->gain = vp.brightness >> 8; + + if (vp.depth != 24 + || vp.palette != VIDEO_PALETTE_RGB24) retval = -EINVAL; break; @@ -652,10 +657,15 @@ vicam_ioctl(struct inode *inode, struct case VIDIOCSWIN: { - struct video_window *vw = (struct video_window *) arg; - DBG("VIDIOCSWIN %d x %d\n", vw->width, vw->height); + struct video_window vw; + + if (copy_from_user(&vw, arg, sizeof (vw))) { + retval = -EFAULT; + break; + } + DBG("VIDIOCSWIN %d x %d\n", vw.width, vw.height); - if ( vw->width != 320 || vw->height != 240 ) + if ( vw.width != 320 || vw.height != 240 ) retval = -EFAULT; break; _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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