4c2c7b2c94
If the environment doesn't offer a working /dev/console, the existing version of init(8) will simply refuse running rc(8) scripts. This means you'll only have a system running init(8) and nothing else. Change the code to do the following: - Open /dev/console like we used to do, but make it more robust to use O_NONBLOCK to prevent blocking on a carrier. - If this fails, use /dev/null as stdin and /var/log/init.log as stdout and stderr. - If even this fails, use /dev/null as stdin, stdout and stderr. So why us this useful? Well, if you remove the `getpid() == 1' check in main(), you can now use init(8) inside jails to properly execute rc(8). It still requires some polishing, as existing tools assume init(8) has PID 1. Also it is now possible to use use init(8) on `headless' devices that don't even have a serial boot console.
42 lines
1.9 KiB
C
42 lines
1.9 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Donn Seeley at Berkeley Software Design, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)pathnames.h 8.1 (Berkeley) 6/5/93
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* $FreeBSD$
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*/
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#include <paths.h>
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#define _PATH_INITLOG "/var/log/init.log"
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#define _PATH_SLOGGER "/sbin/session_logger"
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#define _PATH_RUNCOM "/etc/rc"
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#define _PATH_RUNDOWN "/etc/rc.shutdown"
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