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Sat, 24 Aug 2024 10:09:55 -0700 (PDT) Received: from embed-PC.myguest.virtualbox.org ([106.222.233.87]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7143422ecedsm4714403b3a.25.2024.08.24.10.09.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 24 Aug 2024 10:09:54 -0700 (PDT) Date: Sat, 24 Aug 2024 22:39:49 +0530 From: Abhishek Tamboli To: Dan Carpenter Cc: gregkh@linuxfoundation.org, tdavies@darkphysics.net, philipp.g.hortmann@gmail.com, garyrookard@fastmail.org, linux-staging@lists.linux.dev, skhan@linuxfoundation.org, rbmarliere@gmail.com, christophe.jaillet@wanadoo.fr, linux-kernel-mentees@lists.linuxfoundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] staging: rtl8192e: Replace strcpy with strcat in rtl819x_translate_scan Message-ID: References: <20240823153411.74142-1-abhishektamboli9@gmail.com> <1c640c3d-c5db-4eb7-8a22-6d9886a1412a@stanley.mountain> Precedence: bulk X-Mailing-List: linux-kernel-mentees@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1c640c3d-c5db-4eb7-8a22-6d9886a1412a@stanley.mountain> On Sat, Aug 24, 2024 at 02:21:47PM +0300, Dan Carpenter wrote: > On Fri, Aug 23, 2024 at 09:04:11PM +0530, Abhishek Tamboli wrote: > > diff --git a/drivers/staging/rtl8192e/rtllib_wx.c b/drivers/staging/rtl8192e/rtllib_wx.c > > index fbd4ec824084..ec0c4c5bade7 100644 > > --- a/drivers/staging/rtl8192e/rtllib_wx.c > > +++ b/drivers/staging/rtl8192e/rtllib_wx.c > > @@ -23,14 +23,14 @@ static const char * const rtllib_modes[] = { > > }; > > > > #define MAX_CUSTOM_LEN 64 > > +#define MAX_PROTO_NAME_LEN 10 > > static inline char *rtl819x_translate_scan(struct rtllib_device *ieee, > > char *start, char *stop, > > struct rtllib_network *network, > > struct iw_request_info *info) > > { > > char custom[MAX_CUSTOM_LEN]; > > - char proto_name[6]; > > - char *pname = proto_name; > > + char proto_name[MAX_PROTO_NAME_LEN]; > > In the end I think we don't want to make this buffer larger. But if we did > this define is really vague and slightly confusing. I assumed it was something > else when I read it. It hurts readability. It would probably be better to just > leave it as 6 instead and add a comment. /* Large enough to hold "N-24G" */ Okay, I'll revert the buffer size to 6. > > > char *p; > > struct iw_event iwe; > > int i, j; > > @@ -59,13 +59,12 @@ static inline char *rtl819x_translate_scan(struct rtllib_device *ieee, > > } > > /* Add the protocol name */ > > iwe.cmd = SIOCGIWNAME; > > + /* Initialise proto_name as an empty string*/ > > This comment doesn't add any information. Every kernel developer knows what > memset() does. Sure, I'll remove it. > > + memset(proto_name, '\0', sizeof(proto_name)); > > Normally we would just say 0 instead of '\0'. The other way to do this would > be to initialize it at the start: > > char proto_name[6] = ""; > Thanks, for the feedback. I'll do the changes. Regards, Abhishek