sysarch(2) [netbsd man page]

SYSARCH(2)						      BSD System Calls Manual							SYSARCH(2)

NAME

     sysarch -- architecture-dependent system call

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <machine/sysarch.h>

     int
     sysarch(int number, void *args);

DESCRIPTION

     sysarch() performs the architecture-dependent function specified by number with the arguments specified by the args pointer.  args is a
     pointer to a structure defining the actual arguments of the function.  Symbolic constants and argument structures for the architecture-depen-
     dent functions can be found in the header file <machine/sysarch.h>.

     The sysarch() system call should never be called directly by user programs.  Instead, they should access its functions using the architec-
     ture-dependent library.

RETURN VALUES

     See the manual pages for specific architecture-dependent function calls for information about their return values.

HISTORY

     The sysarch() function call appeared in NetBSD 1.0.

BSD
								 October 11, 1993							       BSD

I386_GET_IOPERM(2)					      BSD System Calls Manual						I386_GET_IOPERM(2)

NAME

     i386_get_ioperm, i386_set_ioperm -- manage per-process access to the i386 I/O port space

LIBRARY

     Standard C Library (libc, -lc)

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 *enable argument.  The port range starts
     at start and the number of contiguous entries will be returned in *length.

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

RETURN VALUES

     Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the
     error.

ERRORS

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

     [EINVAL]		An invalid range was specified by the start or length arguments.

     [EPERM]		The caller of i386_set_ioperm was not the superuser.

SEE ALSO

     io(4)

AUTHORS

     This man page was written by Jonathan Lemon.

BSD
								   July 27, 1998							       BSD