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Date: Mon, 9 May 2022 12:46:19 +0200
From: Hans Verkuil <hverkuil-cisco@...all.nl>
To: Christian Göttsche <cgzones@...glemail.com>,
selinux@...r.kernel.org
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Stefan Haberland <sth@...ux.ibm.com>,
Jan Hoeppner <hoeppner@...ux.ibm.com>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Serge Hallyn <serge@...lyn.com>, Arnd Bergmann <arnd@...db.de>,
Zhen Lei <thunder.leizhen@...wei.com>,
Ondrej Zary <linux@...y.sk>,
David Yang <davidcomponentone@...il.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Colin Ian King <colin.king@...el.com>,
Yang Guang <yang.guang5@....com.cn>,
Julia Lawall <Julia.Lawall@...ia.fr>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Jiri Slaby <jirislaby@...nel.org>,
Du Cheng <ducheng2@...il.com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Pavel Skripkin <paskripkin@...il.com>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org, linux-s390@...r.kernel.org,
linux-security-module@...r.kernel.org
Subject: Re: [PATCH v2 4/8] drivers: use new capable_or functionality
On 5/2/22 18:00, Christian Göttsche wrote:
> Use the new added capable_or function in appropriate cases, where a task
> is required to have any of two capabilities.
>
> Reorder CAP_SYS_ADMIN last.
>
> Signed-off-by: Christian Göttsche <cgzones@...glemail.com>
> ---
> drivers/media/common/saa7146/saa7146_video.c | 2 +-
> drivers/media/pci/bt8xx/bttv-driver.c | 3 +--
> drivers/media/pci/saa7134/saa7134-video.c | 3 +--
> drivers/media/platform/nxp/fsl-viu.c | 2 +-
> drivers/media/test-drivers/vivid/vivid-vid-cap.c | 2 +-
For the media drivers:
Acked-by: Hans Verkuil <hverkuil-cisco@...all.nl>
Regards,
Hans
> drivers/net/caif/caif_serial.c | 2 +-
> drivers/s390/block/dasd_eckd.c | 2 +-
> 7 files changed, 7 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/media/common/saa7146/saa7146_video.c b/drivers/media/common/saa7146/saa7146_video.c
> index 66215d9106a4..5eabc2e77cc2 100644
> --- a/drivers/media/common/saa7146/saa7146_video.c
> +++ b/drivers/media/common/saa7146/saa7146_video.c
> @@ -470,7 +470,7 @@ static int vidioc_s_fbuf(struct file *file, void *fh, const struct v4l2_framebuf
>
> DEB_EE("VIDIOC_S_FBUF\n");
>
> - if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
> + if (!capable_or(CAP_SYS_RAWIO, CAP_SYS_ADMIN))
> return -EPERM;
>
> /* check args */
> diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c
> index 5ca3d0cc653a..4143f380d44d 100644
> --- a/drivers/media/pci/bt8xx/bttv-driver.c
> +++ b/drivers/media/pci/bt8xx/bttv-driver.c
> @@ -2569,8 +2569,7 @@ static int bttv_s_fbuf(struct file *file, void *f,
> const struct bttv_format *fmt;
> int retval;
>
> - if (!capable(CAP_SYS_ADMIN) &&
> - !capable(CAP_SYS_RAWIO))
> + if (!capable_or(CAP_SYS_RAWIO, CAP_SYS_ADMIN))
> return -EPERM;
>
> /* check args */
> diff --git a/drivers/media/pci/saa7134/saa7134-video.c b/drivers/media/pci/saa7134/saa7134-video.c
> index 48543ad3d595..684208ebfdbd 100644
> --- a/drivers/media/pci/saa7134/saa7134-video.c
> +++ b/drivers/media/pci/saa7134/saa7134-video.c
> @@ -1798,8 +1798,7 @@ static int saa7134_s_fbuf(struct file *file, void *f,
> struct saa7134_dev *dev = video_drvdata(file);
> struct saa7134_format *fmt;
>
> - if (!capable(CAP_SYS_ADMIN) &&
> - !capable(CAP_SYS_RAWIO))
> + if (!capable_or(CAP_SYS_RAWIO, CAP_SYS_ADMIN))
> return -EPERM;
>
> /* check args */
> diff --git a/drivers/media/platform/nxp/fsl-viu.c b/drivers/media/platform/nxp/fsl-viu.c
> index afc96f6db2a1..c5ed4c4a1587 100644
> --- a/drivers/media/platform/nxp/fsl-viu.c
> +++ b/drivers/media/platform/nxp/fsl-viu.c
> @@ -803,7 +803,7 @@ static int vidioc_s_fbuf(struct file *file, void *priv, const struct v4l2_frameb
> const struct v4l2_framebuffer *fb = arg;
> struct viu_fmt *fmt;
>
> - if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
> + if (!capable_or(CAP_SYS_RAWIO, CAP_SYS_ADMIN))
> return -EPERM;
>
> /* check args */
> diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> index b9caa4b26209..a0cfcf6c22c4 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> @@ -1253,7 +1253,7 @@ int vivid_vid_cap_s_fbuf(struct file *file, void *fh,
> if (dev->multiplanar)
> return -ENOTTY;
>
> - if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
> + if (!capable_or(CAP_SYS_RAWIO, CAP_SYS_ADMIN))
> return -EPERM;
>
> if (dev->overlay_cap_owner)
> diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
> index 688075859ae4..f17b618d8858 100644
> --- a/drivers/net/caif/caif_serial.c
> +++ b/drivers/net/caif/caif_serial.c
> @@ -326,7 +326,7 @@ static int ldisc_open(struct tty_struct *tty)
> /* No write no play */
> if (tty->ops->write == NULL)
> return -EOPNOTSUPP;
> - if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_TTY_CONFIG))
> + if (!capable_or(CAP_SYS_TTY_CONFIG, CAP_SYS_ADMIN))
> return -EPERM;
>
> /* release devices to avoid name collision */
> diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
> index 8410a25a65c1..9b5d22dd3e7b 100644
> --- a/drivers/s390/block/dasd_eckd.c
> +++ b/drivers/s390/block/dasd_eckd.c
> @@ -5319,7 +5319,7 @@ static int dasd_symm_io(struct dasd_device *device, void __user *argp)
> char psf0, psf1;
> int rc;
>
> - if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
> + if (!capable_or(CAP_SYS_RAWIO, CAP_SYS_ADMIN))
> return -EACCES;
> psf0 = psf1 = 0;
>
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