Section: Linux Programmer's Manual (2)
setup - setup devices and filesystems, mount root filesystem
is called once from within
It calls initialization functions for devices and filesystems
configured into the kernel and then mounts the root filesystem.
No user process may call
Any user process, even a process with superuser permission,
always returns -1 for a user process.
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
has had a single argument
and at other times a single argument
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