media: use strscpy() instead of strlcpy()

The implementation of strscpy() is more robust and safer.

That's now the recommended way to copy NUL terminated strings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

3 files changed, 13 insertions, 13 deletions

diff --git a/drivers/media/usb/go7007/go7007-driver.c b/drivers/media/usb/go7007/go7007-driver.c
index 62aeebcdd7f7..59cf50355b4e 100644
--- a/drivers/media/usb/go7007/go7007-driver.c
+++ b/drivers/media/usb/go7007/go7007-driver.c
@@ -208,7 +208,7 @@ static int init_i2c_module(struct i2c_adapter *adapter, const struct go_i2c *con
 	struct i2c_board_info info;
 
 	memset(&info, 0, sizeof(info));
-	strlcpy(info.type, i2c->type, sizeof(info.type));
+	strscpy(info.type, i2c->type, sizeof(info.type));
 	info.addr = i2c->addr;
 	info.flags = i2c->flags;
 
diff --git a/drivers/media/usb/go7007/go7007-v4l2.c b/drivers/media/usb/go7007/go7007-v4l2.c
index c55c82f70e54..7a2781fa83e7 100644
--- a/drivers/media/usb/go7007/go7007-v4l2.c
+++ b/drivers/media/usb/go7007/go7007-v4l2.c
@@ -284,9 +284,9 @@ static int vidioc_querycap(struct file *file, void  *priv,
 {
 	struct go7007 *go = video_drvdata(file);
 
-	strlcpy(cap->driver, "go7007", sizeof(cap->driver));
-	strlcpy(cap->card, go->name, sizeof(cap->card));
-	strlcpy(cap->bus_info, go->bus_info, sizeof(cap->bus_info));
+	strscpy(cap->driver, "go7007", sizeof(cap->driver));
+	strscpy(cap->card, go->name, sizeof(cap->card));
+	strscpy(cap->bus_info, go->bus_info, sizeof(cap->bus_info));
 
 	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
 				V4L2_CAP_STREAMING;
@@ -634,8 +634,8 @@ static int vidioc_enum_input(struct file *file, void *priv,
 	if (inp->index >= go->board_info->num_inputs)
 		return -EINVAL;
 
-	strlcpy(inp->name, go->board_info->inputs[inp->index].name,
-			sizeof(inp->name));
+	strscpy(inp->name, go->board_info->inputs[inp->index].name,
+		sizeof(inp->name));
 
 	/* If this board has a tuner, it will be the first input */
 	if ((go->board_info->flags & GO7007_BOARD_HAS_TUNER) &&
@@ -673,7 +673,7 @@ static int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *a)
 
 	if (a->index >= go->board_info->num_aud_inputs)
 		return -EINVAL;
-	strlcpy(a->name, go->board_info->aud_inputs[a->index].name,
+	strscpy(a->name, go->board_info->aud_inputs[a->index].name,
 		sizeof(a->name));
 	a->capability = V4L2_AUDCAP_STEREO;
 	return 0;
@@ -684,7 +684,7 @@ static int vidioc_g_audio(struct file *file, void *fh, struct v4l2_audio *a)
 	struct go7007 *go = video_drvdata(file);
 
 	a->index = go->aud_input;
-	strlcpy(a->name, go->board_info->aud_inputs[go->aud_input].name,
+	strscpy(a->name, go->board_info->aud_inputs[go->aud_input].name,
 		sizeof(a->name));
 	a->capability = V4L2_AUDCAP_STEREO;
 	return 0;
@@ -742,7 +742,7 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 	if (t->index != 0)
 		return -EINVAL;
 
-	strlcpy(t->name, "Tuner", sizeof(t->name));
+	strscpy(t->name, "Tuner", sizeof(t->name));
 	return call_all(&go->v4l2_dev, tuner, g_tuner, t);
 }
 
diff --git a/drivers/media/usb/go7007/snd-go7007.c b/drivers/media/usb/go7007/snd-go7007.c
index 137fc253b122..fc84b37d5587 100644
--- a/drivers/media/usb/go7007/snd-go7007.c
+++ b/drivers/media/usb/go7007/snd-go7007.c
@@ -260,10 +260,10 @@ int go7007_snd_init(struct go7007 *go)
 		kfree(gosnd);
 		return ret;
 	}
-	strlcpy(gosnd->card->driver, "go7007", sizeof(gosnd->card->driver));
-	strlcpy(gosnd->card->shortname, go->name, sizeof(gosnd->card->driver));
-	strlcpy(gosnd->card->longname, gosnd->card->shortname,
-			sizeof(gosnd->card->longname));
+	strscpy(gosnd->card->driver, "go7007", sizeof(gosnd->card->driver));
+	strscpy(gosnd->card->shortname, go->name, sizeof(gosnd->card->driver));
+	strscpy(gosnd->card->longname, gosnd->card->shortname,
+		sizeof(gosnd->card->longname));
 
 	gosnd->pcm->private_data = go;
 	snd_pcm_set_ops(gosnd->pcm, SNDRV_PCM_STREAM_CAPTURE,