Date: Thu, 07 Jun 2012 11:56:51 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Konstantin Belousov <kostikbel@gmail.com> Cc: freebsd-hackers@FreeBSD.org Subject: Re: boot menu option to disable graphics mode Message-ID: <4FD06CD3.3080602@FreeBSD.org> In-Reply-To: <20120607084738.GT85127@deviant.kiev.zoral.com.ua> References: <4FD05C16.9040905@FreeBSD.org> <20120607084738.GT85127@deviant.kiev.zoral.com.ua>
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on 07/06/2012 11:47 Konstantin Belousov said the following: > On Thu, Jun 07, 2012 at 10:45:26AM +0300, Andriy Gapon wrote: >> >> It's long been a wish of mine to have an ability to decide at boot time that a >> system should boot in "console-only" mode. That is, that no graphics/X >> applications like e.g. xdm/kdm/gdm are automatically started even when they are >> configured to do so. >> >> Here is my attempt at implementing that: >> https://gitorious.org/~avg/freebsd/avgbsd/commit/96f7051d63d4286ef6f0196d241e7855338a6ed7?format=patch >> >> All the option does at boot time is setting of 'inhibit_gui' variable for kernel >> environment. I envision that this variable could be properly and gracefully >> handled in various startup scripts and/or application startup logic. >> But to ensure that the option is always honored I've also added "ultimate >> protection" to syscons that prohibits KDSETMODE/KD_GRAPHICS ioctl. > This is too much, IMO. I understand why you may want to disable > auto-start of login manager, but preventing a user from running X at all > until she learns about kenv -u _and_ obscure code somewhere in the kernel, > is unreasonable. A user doesn't have to select the option unless he needs to. A "simple user" can just reboot without selecting the option to get back his X. A user doesn't have to learn anything about the code, just about kenv and "magic" inhibit_gui variable. IMO. -- Andriy Gapon
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