NAME

       setup - setup devices and filesystems, mount root filesystem

SYNOPSIS

       #include <unistd.h>

       int setup(void);

DESCRIPTION

       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

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

ERRORS

       EPERM  Always, for a user process.

VERSIONS

       Since Linux 2.1.121, no such function exists anymore.

CONFORMING TO

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

NOTES

       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

       This page is part of release 5.13 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 https://www.kernel.org/doc/man-pages/.