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V4L/DVB (7729): Fix VIDIOCGAP corruption in ivtv

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Frank Bennett reported that ivtv was causing skype to crash. With help
from one of their developers he showed it was a kernel problem.
VIDIOCGCAP copies a name into a fixed length buffer - ivtv uses names
that are too long and does not truncate them so corrupts a few bytes of
the app data area.

Possibly the names also want trimming but for now this should fix the
corruption case.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Alan Cox 2008-04-20 11:27:36 -03:00 committed by Mauro Carvalho Chehab
parent 867e835f4d
commit d2b213f7b7
1 changed files with 2 additions and 1 deletions
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3
drivers/media/video/ivtv/ivtv-ioctl.c
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@ -742,7 +742,8 @@ int ivtv_v4l2_ioctls(struct ivtv *itv, struct file *filp, unsigned int cmd, void
memset(vcap, 0, sizeof(*vcap));
strcpy(vcap->driver, IVTV_DRIVER_NAME); /* driver name */
strcpy(vcap->card, itv->card_name); /* card type */
strncpy(vcap->card, itv->card_name,
sizeof(vcap->card)-1); /* card type */
strcpy(vcap->bus_info, pci_name(itv->dev)); /* bus info... */
vcap->version = IVTV_DRIVER_VERSION; /* version */
vcap->capabilities = itv->v4l2_cap; /* capabilities */