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setup

Section: System Calls (2)
Updated: 202-0-08
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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.