Jan. 9, 2015
2:03 p.m.
On Fri, 09 Jan 2015 18:00:07 +0530, Siddhartha De said:
In what timeframe should we migrate to "pure" sysfs and drop using any ioctls (if a sysfs interface exists)?
Pretty much the answer is "you don't", for the wsame reason that there's still a lot of non-process stuff in /proc - there's no good way to clean up /pron up / proc or get rid of ioctl()'s without breaking userspace. And some ioctl's you can't get rid of because they're part of official standards (for instance, all to TIO_FOO stuff for controlling a terminal are part of POSIX - removing them would break code that used to be portable... Or to put it differently - ioctl() virst appeared in Unix Version 7 in 1979.
From that, calculate how long it will take to get rid of.