Manpages - setup.2

setup - setup devices and filesystems, mount root filesystem

  #include <unistd.h>

  int setup(void);

*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.

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

EPERM

Always, for a user process.

Since Linux 2.1.121, no such function exists anymore.

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

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 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/.