setup

Section: System Calls (2)
Updated: 2022-10-30
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NAME

setup - setup devices and filesystems, mount root filesystem

LIBRARY

Standard C library (libc, -lc)

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.

STANDARDS

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.

This document was created by man2html, using the manual pages.
Time: 01:53:32 GMT, April 19, 2024