linux-kernel - Re: [PATCH V3] leds: trigger: Introduce an USB port trigger

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: <CACna6rxpzN7LrATEQ+Z5tBJrrr6DYVZr37M7qR3WLrWtH_H_bA@mail.gmail.com>
Date:   Wed, 24 Aug 2016 11:29:51 +0200
From:   Rafał Miłecki <zajec5@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Richard Purdie <rpurdie@...ys.net>,
        Jacek Anaszewski <j.anaszewski@...sung.com>,
        Felipe Balbi <balbi@...nel.org>,
        Peter Chen <hzpeterchen@...il.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        Rafał Miłecki <rafal@...ecki.pl>,
        Jonathan Corbet <corbet@....net>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Matthias Brugger <mbrugger@...e.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Stephan Linz <linz@...pro.net>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:LED SUBSYSTEM" <linux-leds@...r.kernel.org>
Subject: Re: [PATCH V3] leds: trigger: Introduce an USB port trigger

On 24 August 2016 at 11:22, Greg KH <gregkh@...uxfoundation.org> wrote:
> On Wed, Aug 24, 2016 at 12:03:29AM +0200, Rafał Miłecki wrote:
>> +static ssize_t ports_show(struct device *dev, struct device_attribute *attr,
>> +                       char *buf)
>> +{
>> +     struct led_classdev *led_cdev = dev_get_drvdata(dev);
>> +     struct usbport_trig_data *usbport_data = led_cdev->trigger_data;
>> +     struct usbport_trig_port *port;
>> +     ssize_t ret = 0;
>> +     int len;
>> +
>> +     list_for_each_entry(port, &usbport_data->ports, list) {
>> +             len = sprintf(buf + ret, "%s\n", port->name);
>> +             if (len >= 0)
>> +                     ret += len;
>> +     }
>> +
>> +     return ret;
>> +}
>
> sysfs is "one value per file", here you are listing a bunch of things in
> one sysfs file.  Please don't do that.

OK. What do you think about creating "ports" subdirectory and creating
file-per-port in it? Then I'd need to bring back something like
"new_port" and "remove_port". Does it sound OK?

-- 
Rafał