media: replace strncpy() by strscpy()

The strncpy() function is being deprecated upstream. Replace
it by the safer strscpy().

While here, replace a few occurences of strlcpy() that were
recently added to also use strscpy().

Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

15 files changed, 26 insertions, 25 deletions

diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c
index 5c17624aaade..fe7b937eb5f2 100644
--- a/drivers/media/platform/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/am437x/am437x-vpfe.c
@@ -1540,7 +1540,7 @@ static int vpfe_enum_fmt(struct file *file, void  *priv,
 	if (!fmt)
 		return -EINVAL;
 
-	strncpy(f->description, fmt->name, sizeof(f->description) - 1);
+	strscpy(f->description, fmt->name, sizeof(f->description));
 	f->pixelformat = fmt->fourcc;
 	f->type = vpfe->fmt.type;
 
diff --git a/drivers/media/platform/davinci/vpfe_capture.c b/drivers/media/platform/davinci/vpfe_capture.c
index 26dadbba930f..1e3a13830544 100644
--- a/drivers/media/platform/davinci/vpfe_capture.c
+++ b/drivers/media/platform/davinci/vpfe_capture.c
@@ -1759,7 +1759,7 @@ static int vpfe_probe(struct platform_device *pdev)
 
 	mutex_lock(&ccdc_lock);
 
-	strncpy(ccdc_cfg->name, vpfe_cfg->ccdc, 32);
+	strscpy(ccdc_cfg->name, vpfe_cfg->ccdc, sizeof(ccdc_cfg->name));
 	/* Get VINT0 irq resource */
 	res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (!res1) {
diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
index 6216b7ac6875..b5aacb0fb96b 100644
--- a/drivers/media/platform/davinci/vpif_capture.c
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -1254,7 +1254,8 @@ static int vpif_s_dv_timings(struct file *file, void *priv,
 	} else {
 		std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
 	}
-	strncpy(std_info->name, "Custom timings BT656/1120", VPIF_MAX_NAME);
+	strscpy(std_info->name, "Custom timings BT656/1120",
+		sizeof(std_info->name));
 	std_info->width = bt->width;
 	std_info->height = bt->height;
 	std_info->frm_fmt = bt->interlaced ? 0 : 1;
diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c
index f4b4f2a1dfc0..a69897c68a50 100644
--- a/drivers/media/platform/davinci/vpif_display.c
+++ b/drivers/media/platform/davinci/vpif_display.c
@@ -987,8 +987,8 @@ static int vpif_s_dv_timings(struct file *file, void *priv,
 	} else {
 		std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
 	}
-	strncpy(std_info->name, "Custom timings BT656/1120",
-			VPIF_MAX_NAME);
+	strscpy(std_info->name, "Custom timings BT656/1120",
+		sizeof(std_info->name));
 	std_info->width = bt->width;
 	std_info->height = bt->height;
 	std_info->frm_fmt = bt->interlaced ? 0 : 1;
diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c
index 3e9fcf4f8a13..de4af0357a3c 100644
--- a/drivers/media/platform/exynos4-is/fimc-capture.c
+++ b/drivers/media/platform/exynos4-is/fimc-capture.c
@@ -742,7 +742,7 @@ static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv,
 			       f->index);
 	if (!fmt)
 		return -EINVAL;
-	strncpy(f->description, fmt->name, sizeof(f->description) - 1);
+	strscpy(f->description, fmt->name, sizeof(f->description));
 	f->pixelformat = fmt->fourcc;
 	if (fmt->fourcc == MEDIA_BUS_FMT_JPEG_1X8)
 		f->flags |= V4L2_FMT_FLAG_COMPRESSED;
diff --git a/drivers/media/platform/exynos4-is/fimc-m2m.c b/drivers/media/platform/exynos4-is/fimc-m2m.c
index 61c8177409cf..1bea1ce4091e 100644
--- a/drivers/media/platform/exynos4-is/fimc-m2m.c
+++ b/drivers/media/platform/exynos4-is/fimc-m2m.c
@@ -252,7 +252,7 @@ static int fimc_m2m_enum_fmt_mplane(struct file *file, void *priv,
 	if (!fmt)
 		return -EINVAL;
 
-	strncpy(f->description, fmt->name, sizeof(f->description) - 1);
+	strscpy(f->description, fmt->name, sizeof(f->description));
 	f->pixelformat = fmt->fourcc;
 	return 0;
 }
diff --git a/drivers/media/platform/imx-pxp.c b/drivers/media/platform/imx-pxp.c
index 0bcfc5aa8f3d..8e7ef23b9a7e 100644
--- a/drivers/media/platform/imx-pxp.c
+++ b/drivers/media/platform/imx-pxp.c
@@ -1025,8 +1025,8 @@ static irqreturn_t pxp_irq_handler(int irq, void *dev_id)
 static int pxp_querycap(struct file *file, void *priv,
 			   struct v4l2_capability *cap)
 {
-	strlcpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
-	strlcpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
+	strscpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
+	strscpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
 	snprintf(cap->bus_info, sizeof(cap->bus_info),
 			"platform:%s", MEM2MEM_NAME);
 	return 0;
diff --git a/drivers/media/platform/mtk-vpu/mtk_vpu.c b/drivers/media/platform/mtk-vpu/mtk_vpu.c
index b6602490a247..46c45f93c977 100644
--- a/drivers/media/platform/mtk-vpu/mtk_vpu.c
+++ b/drivers/media/platform/mtk-vpu/mtk_vpu.c
@@ -614,7 +614,7 @@ static void vpu_init_ipi_handler(void *data, unsigned int len, void *priv)
 	struct vpu_run *run = (struct vpu_run *)data;
 
 	vpu->run.signaled = run->signaled;
-	strncpy(vpu->run.fw_ver, run->fw_ver, VPU_FW_VER_LEN);
+	strscpy(vpu->run.fw_ver, run->fw_ver, sizeof(vpu->run.fw_ver));
 	vpu->run.dec_capability = run->dec_capability;
 	vpu->run.enc_capability = run->enc_capability;
 	wake_up_interruptible(&vpu->run.wq);
diff --git a/drivers/media/platform/mx2_emmaprp.c b/drivers/media/platform/mx2_emmaprp.c
index f60f499c596b..e100b30bb6f5 100644
--- a/drivers/media/platform/mx2_emmaprp.c
+++ b/drivers/media/platform/mx2_emmaprp.c
@@ -385,8 +385,8 @@ static irqreturn_t emmaprp_irq(int irq_emma, void *data)
 static int vidioc_querycap(struct file *file, void *priv,
 			   struct v4l2_capability *cap)
 {
-	strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1);
-	strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1);
+	strscpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
+	strscpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
 	cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 	return 0;
diff --git a/drivers/media/platform/s5p-g2d/g2d.c b/drivers/media/platform/s5p-g2d/g2d.c
index 971c47165010..c8f394e1aff4 100644
--- a/drivers/media/platform/s5p-g2d/g2d.c
+++ b/drivers/media/platform/s5p-g2d/g2d.c
@@ -297,8 +297,8 @@ static int g2d_release(struct file *file)
 static int vidioc_querycap(struct file *file, void *priv,
 				struct v4l2_capability *cap)
 {
-	strncpy(cap->driver, G2D_NAME, sizeof(cap->driver) - 1);
-	strncpy(cap->card, G2D_NAME, sizeof(cap->card) - 1);
+	strscpy(cap->driver, G2D_NAME, sizeof(cap->driver));
+	strscpy(cap->card, G2D_NAME, sizeof(cap->card));
 	cap->bus_info[0] = 0;
 	cap->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
@@ -312,7 +312,7 @@ static int vidioc_enum_fmt(struct file *file, void *prv, struct v4l2_fmtdesc *f)
 		return -EINVAL;
 	fmt = &formats[f->index];
 	f->pixelformat = fmt->fourcc;
-	strncpy(f->description, fmt->name, sizeof(f->description) - 1);
+	strscpy(f->description, fmt->name, sizeof(f->description));
 	return 0;
 }
 
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
index 1fd16861f111..f0dfe68486d1 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
@@ -412,7 +412,7 @@ static int vidioc_enum_input(struct file *file, void *fh,
 	if (inp->index != 0)
 		return -EINVAL;
 
-	strlcpy(inp->name, "camera", sizeof(inp->name));
+	strscpy(inp->name, "camera", sizeof(inp->name));
 	inp->type = V4L2_INPUT_TYPE_CAMERA;
 
 	return 0;
@@ -644,7 +644,7 @@ int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi,
 	}
 
 	/* Register video device */
-	strlcpy(vdev->name, name, sizeof(vdev->name));
+	strscpy(vdev->name, name, sizeof(vdev->name));
 	vdev->release		= video_device_release_empty;
 	vdev->fops		= &sun6i_video_fops;
 	vdev->ioctl_ops		= &sun6i_video_ioctl_ops;
diff --git a/drivers/media/platform/ti-vpe/vpe.c b/drivers/media/platform/ti-vpe/vpe.c
index 207e7e76c048..1e40eafec284 100644
--- a/drivers/media/platform/ti-vpe/vpe.c
+++ b/drivers/media/platform/ti-vpe/vpe.c
@@ -1491,8 +1491,8 @@ handled:
 static int vpe_querycap(struct file *file, void *priv,
 			struct v4l2_capability *cap)
 {
-	strncpy(cap->driver, VPE_MODULE_NAME, sizeof(cap->driver) - 1);
-	strncpy(cap->card, VPE_MODULE_NAME, sizeof(cap->card) - 1);
+	strscpy(cap->driver, VPE_MODULE_NAME, sizeof(cap->driver));
+	strscpy(cap->card, VPE_MODULE_NAME, sizeof(cap->card));
 	snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
 		VPE_MODULE_NAME);
 	cap->device_caps  = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
@@ -1519,7 +1519,7 @@ static int __enum_fmt(struct v4l2_fmtdesc *f, u32 type)
 	if (!fmt)
 		return -EINVAL;
 
-	strncpy(f->description, fmt->name, sizeof(f->description) - 1);
+	strscpy(f->description, fmt->name, sizeof(f->description));
 	f->pixelformat = fmt->fourcc;
 	return 0;
 }
diff --git a/drivers/media/platform/vicodec/vicodec-core.c b/drivers/media/platform/vicodec/vicodec-core.c
index a5f8f74ea3bf..bd01a9206aa6 100644
--- a/drivers/media/platform/vicodec/vicodec-core.c
+++ b/drivers/media/platform/vicodec/vicodec-core.c
@@ -692,8 +692,8 @@ static const struct v4l2_fwht_pixfmt_info *find_fmt(u32 fmt)
 static int vidioc_querycap(struct file *file, void *priv,
 			   struct v4l2_capability *cap)
 {
-	strncpy(cap->driver, VICODEC_NAME, sizeof(cap->driver) - 1);
-	strncpy(cap->card, VICODEC_NAME, sizeof(cap->card) - 1);
+	strscpy(cap->driver, VICODEC_NAME, sizeof(cap->driver));
+	strscpy(cap->card, VICODEC_NAME, sizeof(cap->card));
 	snprintf(cap->bus_info, sizeof(cap->bus_info),
 			"platform:%s", VICODEC_NAME);
 	return 0;
diff --git a/drivers/media/platform/vim2m.c b/drivers/media/platform/vim2m.c
index d8763a8a7be6..243c82b5d537 100644
--- a/drivers/media/platform/vim2m.c
+++ b/drivers/media/platform/vim2m.c
@@ -659,8 +659,8 @@ static void device_work(struct work_struct *w)
 static int vidioc_querycap(struct file *file, void *priv,
 			   struct v4l2_capability *cap)
 {
-	strncpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver) - 1);
-	strncpy(cap->card, MEM2MEM_NAME, sizeof(cap->card) - 1);
+	strscpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
+	strscpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
 	snprintf(cap->bus_info, sizeof(cap->bus_info),
 		 "platform:%s", MEM2MEM_NAME);
 	return 0;
diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c
index 342e0e6c103b..7047df6f0e0e 100644
--- a/drivers/media/platform/vivid/vivid-core.c
+++ b/drivers/media/platform/vivid/vivid-core.c
@@ -681,7 +681,7 @@ static int vivid_create_instance(struct platform_device *pdev, int inst)
 	dev->v4l2_dev.mdev = &dev->mdev;
 
 	/* Initialize media device */
-	strlcpy(dev->mdev.model, VIVID_MODULE_NAME, sizeof(dev->mdev.model));
+	strscpy(dev->mdev.model, VIVID_MODULE_NAME, sizeof(dev->mdev.model));
 	snprintf(dev->mdev.bus_info, sizeof(dev->mdev.bus_info),
 		 "platform:%s-%03d", VIVID_MODULE_NAME, inst);
 	dev->mdev.dev = &pdev->dev;