setup(2) — Linux manual page

setup(2)                   System Calls Manual                  setup(2)

NAME

       setup - setup devices and filesystems, mount root filesystem

LIBRARY

       Standard C library (libc, -lc)

SYNOPSIS

       #include <unistd.h>

       [[deprecated]] 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.

STANDARDS

       Linux.

VERSIONS

       Removed in Linux 2.1.121.

       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

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       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.9.1.tar.gz
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Linux man-pages 6.9.1          2024-05-02                       setup(2)

Pages that refer to this page: syscalls(2)

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