setup (2) Linux Manual Page
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.