Проект OpenNet: MAN i386_get_ioperm (2) Системные вызовы (FreeBSD и Linux)

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i386_get_ioperm (2)

>> i386_get_ioperm (2) ( FreeBSD man: Системные вызовы )

BSD mandoc

NAME

i386_get_ioperm

 
i386_set_ioperm

 - manage per-process access to the i386 I/O port space

LIBRARY

Lb libc

SYNOPSIS

#include <machine/sysarch.h>
int i386_get_ioperm (unsigned int start unsigned int *length int *enable);
int i386_set_ioperm (unsigned int start unsigned int length int enable);

DESCRIPTION

The i386_get_ioperm ();
system call will return the permission for the process' I/O port space in the Fa *enable argument. The port range starts at Fa start and the number of contiguous entries will be returned in Fa *length .

The i386_set_ioperm ();
system call will set access to a range of I/O ports described by the Fa start and Fa length arguments to the state specified by the Fa enable argument.

RETURN VALUES

Rv -std

ERRORS

The i386_get_ioperm ();
and i386_set_ioperm ();
system calls will fail if:

Bq Er EINVAL: An invalid range was specified by the Fa start or Fa length arguments.
Bq Er EPERM: The caller of i386_set_ioperm was not the superuser.