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/*
* Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#include <errno.h>
#include <sys/resource.h>
extern int __iopolicysys(int, struct _iopol_param_t *);
int
getiopolicy_np(int iotype, int scope)
{
int policy, error;
struct _iopol_param_t iop_param;
if (iotype != IOPOL_TYPE_DISK ||
(scope != IOPOL_SCOPE_PROCESS && scope != IOPOL_SCOPE_THREAD)) {
errno = EINVAL;
policy = -1;
goto exit;
}
iop_param.iop_scope = scope;
iop_param.iop_iotype = iotype;
error = syscall(322, IOPOL_CMD_GET, &iop_param);
if (error != 0) {
errno = error;
policy = -1;
goto exit;
}
policy = iop_param.iop_policy;
exit:
return policy;
}
int
setiopolicy_np(int iotype, int scope, int policy)
{
int error;
struct _iopol_param_t iop_param;
if (iotype != IOPOL_TYPE_DISK ||
(scope != IOPOL_SCOPE_PROCESS && scope != IOPOL_SCOPE_THREAD)) {
errno = EINVAL;
error = -1;
goto exit;
}
switch (policy) {
case IOPOL_DEFAULT:
case IOPOL_NORMAL:
case IOPOL_THROTTLE:
case IOPOL_PASSIVE:
break;
default:
errno = EINVAL;
error = -1;
goto exit;
}
iop_param.iop_scope = scope;
iop_param.iop_iotype = iotype;
iop_param.iop_policy = policy;
error = syscall(322, IOPOL_CMD_SET, &iop_param);
if (error != 0) {
errno = error;
error = -1;
goto exit;
}
exit:
return error;
}
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