diff options
Diffstat (limited to 'lib/libarch/i386/i386_iopl.2')
| -rw-r--r-- | lib/libarch/i386/i386_iopl.2 | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/lib/libarch/i386/i386_iopl.2 b/lib/libarch/i386/i386_iopl.2 index 5c6db6b60b4..5a8cc0bee8a 100644 --- a/lib/libarch/i386/i386_iopl.2 +++ b/lib/libarch/i386/i386_iopl.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: i386_iopl.2,v 1.12 2004/03/12 17:56:06 jmc Exp $ +.\" $OpenBSD: i386_iopl.2,v 1.13 2006/02/24 01:07:20 djm Exp $ .\" $NetBSD: i386_iopl.2,v 1.3 1996/02/27 22:57:25 jtc Exp $ .\" .\" Copyright (c) 1996 The NetBSD Foundation, Inc. @@ -50,7 +50,13 @@ .Fn i386_iopl sets the i386 I/O privilege level to the value specified by .Ar iopl . -This call is restricted to the superuser. +.Pp +This call may only be made by the superuser. +Additionally, it is only permitted when the +.Xr securelevel 7 +is less than or equal to 0 or the +.Va machdep.allowaperture +sysctl has been set to a non-zero value. .Pp .Sy Note: Code using the @@ -70,11 +76,14 @@ is set to indicate the error. will fail if: .Bl -tag -width [EINVAL] .It Bq Er EPERM -The caller was not the superuser. +The caller was not the superuser, or the securelevel is non-zero and +.Va machdep.allowaperture +has not been set to a non-zero value. .El .Sh SEE ALSO .Xr i386_get_ioperm 2 , -.Xr i386_set_ioperm 2 +.Xr i386_set_ioperm 2 , +.Xr securelevel 7 .Sh REFERENCES .Rs .%A Intel |