SETUP(2)                  Linux Programmer's Manual                 SETUP(2)

NAME         top

       setup - setup devices and filesystems, mount root filesystem

SYNOPSIS         top

       #include <unistd.h>

       int setup(void);

DESCRIPTION         top

       setup() is called once from within linux/init/main.c.  It calls
       initialization functions for devices and filesystems configured into
       the kernel and then mounts the root filesystem.

       No user process may call setup().  Any user process, even a process
       with superuser permission, will receive EPERM.

RETURN VALUE         top

       setup() always returns -1 for a user process.

ERRORS         top

       EPERM  Always, for a user process.

VERSIONS         top

       Since Linux 2.1.121, no such function exists anymore.

CONFORMING TO         top

       This function is Linux-specific, and should not be used in programs
       intended to be portable, or indeed in any programs at all.

NOTES         top

       The calling sequence varied: at some times setup() has had a single
       argument void *BIOS and at other times a single argument int magic.

COLOPHON         top

       This page is part of release 4.12 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at

Linux                            2008-12-03                         SETUP(2)

Pages that refer to this page: syscalls(2)