From: <yang.yang29@zte.com.cn>
To: <perex@perex.cz>
Cc: yang.yang29@zte.com.cn, xu.panda@zte.com.cn,
alsa-devel@alsa-project.org, tiwai@suse.com,
linux-kernel@vger.kernel.org
Subject: [PATCH linux-next] ALSA: control-led: use strscpy() to instead of strncpy()
Date: Mon, 9 Jan 2023 19:45:51 +0800 (CST) [thread overview]
Message-ID: <202301091945513559977@zte.com.cn> (raw)
From: Xu Panda <xu.panda@zte.com.cn>
The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL-terminated strings.
Signed-off-by: Xu Panda <xu.panda@zte.com.cn>
Signed-off-by: Yang Yang <yang.yang29@zte.com.cn>
---
sound/core/control_led.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/core/control_led.c b/sound/core/control_led.c
index f975cc85772b..c88653c205eb 100644
--- a/sound/core/control_led.c
+++ b/sound/core/control_led.c
@@ -534,8 +534,7 @@ static ssize_t set_led_id(struct snd_ctl_led_card *led_card, const char *buf, si
struct snd_ctl_elem_id id;
int err;
- strncpy(buf2, buf, len);
- buf2[len] = '\0';
+ strncpy(buf2, buf, len + 1);
memset(&id, 0, sizeof(id));
id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
s = buf2;
--
2.15.2
WARNING: multiple messages have this Message-ID (diff)
From: <yang.yang29@zte.com.cn>
To: <perex@perex.cz>
Cc: <tiwai@suse.com>, <alsa-devel@alsa-project.org>,
<linux-kernel@vger.kernel.org>, <xu.panda@zte.com.cn>,
<yang.yang29@zte.com.cn>
Subject: [PATCH linux-next] ALSA: control-led: use strscpy() to instead of strncpy()
Date: Mon, 9 Jan 2023 19:45:51 +0800 (CST) [thread overview]
Message-ID: <202301091945513559977@zte.com.cn> (raw)
From: Xu Panda <xu.panda@zte.com.cn>
The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL-terminated strings.
Signed-off-by: Xu Panda <xu.panda@zte.com.cn>
Signed-off-by: Yang Yang <yang.yang29@zte.com.cn>
---
sound/core/control_led.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/core/control_led.c b/sound/core/control_led.c
index f975cc85772b..c88653c205eb 100644
--- a/sound/core/control_led.c
+++ b/sound/core/control_led.c
@@ -534,8 +534,7 @@ static ssize_t set_led_id(struct snd_ctl_led_card *led_card, const char *buf, si
struct snd_ctl_elem_id id;
int err;
- strncpy(buf2, buf, len);
- buf2[len] = '\0';
+ strncpy(buf2, buf, len + 1);
memset(&id, 0, sizeof(id));
id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
s = buf2;
--
2.15.2
next reply other threads:[~2023-01-09 11:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-09 11:45 yang.yang29 [this message]
2023-01-09 11:45 ` [PATCH linux-next] ALSA: control-led: use strscpy() to instead of strncpy() yang.yang29
2023-01-09 12:40 ` Takashi Iwai
2023-01-09 12:40 ` Takashi Iwai
2023-01-09 13:36 ` Jaroslav Kysela
2023-01-09 13:36 ` Jaroslav Kysela
2023-01-09 12:56 ` Takashi Sakamoto
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202301091945513559977@zte.com.cn \
--to=yang.yang29@zte.com.cn \
--cc=alsa-devel@alsa-project.org \
--cc=linux-kernel@vger.kernel.org \
--cc=perex@perex.cz \
--cc=tiwai@suse.com \
--cc=xu.panda@zte.com.cn \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.