linux-kernel - Re: [PATCH] tty: add TIOCGPTPEER ioctl

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Date:   Fri, 2 Jun 2017 06:00:17 +1000
From:   Aleksa Sarai <asarai@...e.de>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, Arnd Bergmann <arnd@...db.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        alpha <linux-alpha@...r.kernel.org>,
        Linux MIPS Mailing List <linux-mips@...ux-mips.org>,
        Parisc List <linux-parisc@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        Linux-sh list <linux-sh@...r.kernel.org>,
        sparclinux <sparclinux@...r.kernel.org>,
        "linux-xtensa@...ux-xtensa.org" <linux-xtensa@...ux-xtensa.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Valentin Rothberg <vrothberg@...e.com>
Subject: Re: [PATCH] tty: add TIOCGPTPEER ioctl

>> --- a/arch/alpha/include/uapi/asm/ioctls.h
>> +++ b/arch/alpha/include/uapi/asm/ioctls.h
>> @@ -94,6 +94,7 @@
>>   #define TIOCSRS485     _IOWR('T', 0x2F, struct serial_rs485)
>>   #define TIOCGPTN       _IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
>>   #define TIOCSPTLCK     _IOW('T',0x31, int)  /* Lock/unlock Pty */
>> +#define TIOCGPTPEER    _IOR('T', 0x41, int) /* Safely open the slave */
> 
> Shouldn't the list of definitions be kept sorted, by hex number?
> (everywhere)

Probably. The reason I put it here is because it logically is very 
similar to TIOCGPTN and TIOSPTLCK, but I can move it if the hex order is 
more important for maintainence.

-- 
Aleksa Sarai
Software Engineer (Containers)
SUSE Linux GmbH
https://www.cyphar.com/