linux-kernel - Re: Re: [PATCH 1/2] dmaengine: dmatest: change symbolic permissions to octal values

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1517207190.2845.6.camel@hxt-semitech.com>
Date:   Mon, 29 Jan 2018 06:26:40 +0000
From:   "Yang, Shunyong" <shunyong.yang@...-semitech.com>
To:     "vinod.koul@...el.com" <vinod.koul@...el.com>
CC:     "dan.j.williams@...el.com" <dan.j.williams@...el.com>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Re: [PATCH 1/2] dmaengine: dmatest: change symbolic permissions
 to octal values

Hi, Vinod

On Mon, 2018-01-29 at 10:18 +0530, Vinod Koul wrote:
> On Mon, Jan 22, 2018 at 06:44:40PM +0800, Yang Shunyong wrote:
> > 
> > Current coding style prefers octal permissions values. This patch
> > changes symbolic permissions to octal values.
> Is this preference documented anywhere?
> 

When using symbolic permissions like "S_IRUGO | S_IWUSR". The
checkpatch.pl will output some warnings to suggest to use octal values.
I quote following lines from checkpatch.pl,

# check for uses of S_<PERMS> that could be octal for readability
...
if (WARN("SYMBOLIC_PERMS",
                                 "Symbolic permissions '$oval' are not
preferred. Consider using octal permissions '$octal'.\n" . $herecurr)
&&
                            $fix) {
                                $fixed[$fixlinenr] =~ s/$val/$octal/;
                        }

Thanks.
Shunyong