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Message-ID: <20200129154925.GI30412@brightrain.aerifal.cx> Date: Wed, 29 Jan 2020 10:49:25 -0500 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: MUSL not including <sys/ttydefaults.h> in <sys/ioctl.h> On Wed, Jan 29, 2020 at 01:50:12PM +0100, Petr Vorel wrote: > Hi, > > Glibc is including <sys/ttydefaults.h> in <sys/ioctl.h> with following comment: > > /* On a Unix system, the system <sys/ioctl.h> probably defines some of > the symbols we define in <sys/ttydefaults.h> (usually with the same > values). The code to generate <bits/ioctls.h> has omitted these > symbols to avoid the conflict, but a Unix program expects <sys/ioctl.h> > to define them, so we must include <sys/ttydefaults.h> here. */ > > I guess glibc is (as usual) wrong and therefore users who needs these > definitions should load also <sys/ttydefaults.h> explicitly. ioctl.h isn't governed by any current standard, so we could include sys/ttydefaults.h here, but I don't think it makes sense to. These macros logically have nothing to do with the ioctl interface; rather they go with termios. Programs that want them should probably be including the header explicitly, or better yet not using them at all. I also found a couple small issues in that header I'm fixing now. Rich
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