From: colin@cvidal.org (Colin Vidal)
To: kernelnewbies@lists.kernelnewbies.org
Subject: convension about type argument on _IO macro
Date: Sat, 02 Jul 2016 22:34:24 +0200 [thread overview]
Message-ID: <1467491664.2769691.655169025.43C3335D@webmail.messagingengine.com> (raw)
Hi all,
In LDDv3, chapter 6, on ioctl, macros IOCTQUANTIUM is defined with
_IO(SCULL_MAGIC, 3).
IOCT_* tells that a value (given directly as value through the argument)
is set to the device. However, no type is given to this macro.
It is not a big deal since this macro is just a helper to generate
identifiers, but, I wonder if there is any convention telling that we
should precise an argument only if it's a pointer ?
Thanks
- Colin
reply other threads:[~2016-07-02 20:34 UTC|newest]
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