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[82.69.66.36]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48d184e197asm1027725e9.30.2026.05.04.14.01.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 May 2026 14:01:52 -0700 (PDT) Date: Mon, 4 May 2026 22:01:50 +0100 From: David Laight To: Andy Shevchenko Cc: Herbert Xu , Lianjie Wang , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, Olivia Mackall , Thorsten Blum , Manuel Ebner Subject: Re: [PATCH v1 1/1] hwrng: core - Replace strlcat() with better alternative Message-ID: <20260504220150.5e6ce43e@pumpkin> In-Reply-To: <20260504130259.473382-1-andriy.shevchenko@linux.intel.com> References: <20260504130259.473382-1-andriy.shevchenko@linux.intel.com> X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; arm-unknown-linux-gnueabihf) Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 4 May 2026 15:02:59 +0200 Andy Shevchenko wrote: > strlcpy() and strlcat() are confusing APIs and the former one already > gone from the kernel. > > In preparation to kill strlcat() replace it with the better alternative. > > Signed-off-by: Andy Shevchenko Reviewed-by: David Laight > --- > drivers/char/hw_random/core.c | 14 +++++++------- > 1 file changed, 7 insertions(+), 7 deletions(-) > > diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c > index aba92d777f72..c789699bd773 100644 > --- a/drivers/char/hw_random/core.c > +++ b/drivers/char/hw_random/core.c > @@ -418,21 +418,21 @@ static ssize_t rng_available_show(struct device *dev, > struct device_attribute *attr, > char *buf) > { > + int len = 0; > int err; > struct hwrng *rng; > > err = mutex_lock_interruptible(&rng_mutex); > if (err) > return -ERESTARTSYS; > - buf[0] = '\0'; > - list_for_each_entry(rng, &rng_list, list) { > - strlcat(buf, rng->name, PAGE_SIZE); > - strlcat(buf, " ", PAGE_SIZE); > - } > - strlcat(buf, "none\n", PAGE_SIZE); > + > + list_for_each_entry(rng, &rng_list, list) > + len += sysfs_emit_at(buf, len, "%s ", rng->name); > + len += sysfs_emit_at(buf, len, "none\n"); > + > mutex_unlock(&rng_mutex); > > - return strlen(buf); > + return len; > } > > static ssize_t rng_selected_show(struct device *dev,