mirror of https://github.com/mkerrisk/man-pages
68 lines
2.6 KiB
Groff
68 lines
2.6 KiB
Groff
.\" Hey Emacs! This file is -*- nroff -*- source.
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.\"
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.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
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.\"
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of this
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.\" manual under the conditions for verbatim copying, provided that the
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.\" entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Since the Linux kernel and libraries are constantly changing, this
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
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.\" responsibility for errors or omissions, or for damages resulting from
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.\" the use of the information contained herein. The author(s) may not
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.\" have taken the same level of care in the production of this manual,
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.\" which is licensed free of charge, as they might when working
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.\" professionally.
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.\"
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.\" Formatted or processed versions of this manual, if unaccompanied by
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.\" the source, must acknowledge the copyright and authors of this work.
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.\"
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.\" Modified by Michael Haardt <michael@moria.de>
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.\" Modified Sun Jul 25 10:14:13 1993 by Rik Faith <faith@cs.unc.edu>
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.\" Modified 15 April 1995 by Michael Chastain <mec@shell.portal.com>
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.\" Update calling parameters to Linux 1.2.4 values.
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.\" Modified 10 June 1995 by Andries Brouwer <aeb@cwi.nl>
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.\" Modified 3 May 1996 by Martin Schulze <joey@infodrom.north.de>
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.\" Modified Wed Nov 6 04:05:28 1996 by Eric S. Raymond <esr@thyrsus.com>
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.\" Modified Sat Jan 29 01:08:23 2000 by aeb
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.\"
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.TH SETUP 2 1996-05-03 "Linux" "Linux Programmer's Manual"
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.SH NAME
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setup \- setup devices and file systems, mount root file system
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.SH SYNOPSIS
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.B #include <unistd.h>
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.sp
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.B int setup(void);
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.SH DESCRIPTION
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.BR setup ()
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is called once from within
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.IR linux/init/main.c .
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It calls initialization functions for devices and file systems
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configured into the kernel and then mounts the root file system.
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.PP
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No user process may call
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.BR setup ().
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Any user process, even a process with superuser permission,
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will receive
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.BR EPERM .
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.SH "RETURN VALUE"
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.BR setup ()
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always returns \-1 for a user process.
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.SH ERRORS
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.TP
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.B EPERM
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Always, for a user process.
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.SH "CONFORMING TO"
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This function is Linux-specific, and should not be used in programs
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intended to be portable, or indeed in any programs at all.
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Since Linux 2.1.121, no such function exists anymore.
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The calling sequence varied: it has had a single parameter
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.I "void *BIOS"
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and at other times a single parameter
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.IR "int magic" .
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