Date: Thu, 8 Sep 2016 19:36:33 +0200 From: Jilles Tjoelker <jilles@stack.nl> To: "Lundberg, Johannes" <johannes@brilliantservice.co.jp> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Weirdness in TTY & VT Message-ID: <20160908173633.GA50215@stack.nl> In-Reply-To: <CAASDrVky8v4FWjqKYgv1mJ0-ksqVD9KWTNBNatfSVxBOBc5eyQ@mail.gmail.com> References: <CAASDrVky8v4FWjqKYgv1mJ0-ksqVD9KWTNBNatfSVxBOBc5eyQ@mail.gmail.com>
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On Fri, Sep 02, 2016 at 05:12:12PM -0700, Lundberg, Johannes wrote: > I'm porting some Linux code and have some weird behavior. > In this (Linux) code fstat() and minor() is used on a /dev/tty file > descriptor to get a tty number to map to. In FreeBSD this returns a number > around 60-70 for st_rdev which means VT_ACTIVATE ioctl call will fail > because it only allows values 0-12. > Should not this be compatible with FreeBSD? If not, what is the FreeBSD way > to do this? > Is there some implementation missing in vt? minor() and major() are obsolete in FreeBSD. A (userland) dev_t is an opaque identifier. The direct equivalent is devname_r() or fdevname_r() followed by parsing the resulting string. There is also a VT_GETINDEX ioctl but I don't know whether it works. -- Jilles Tjoelker
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