00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/* $NetBSD: resource.h,v 1.4 2014/12/10 04:38:00 christos Exp $ */
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/*
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* Copyright (C) 2004-2008 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 2000, 2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: resource.h,v 1.13 2008/07/11 23:47:09 tbox Exp */
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#ifndef ISC_RESOURCE_H
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#define ISC_RESOURCE_H 1
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/*! \file isc/resource.h */
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#include <isc/lang.h>
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#include <isc/types.h>
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#define ISC_RESOURCE_UNLIMITED ((isc_resourcevalue_t)ISC_UINT64_MAX)
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ISC_LANG_BEGINDECLS
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isc_result_t
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isc_resource_setlimit(isc_resource_t resource, isc_resourcevalue_t value);
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/*%<
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* Set the maximum limit for a system resource.
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*
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* Notes:
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*\li If 'value' exceeds the maximum possible on the operating system,
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* it is silently limited to that maximum -- or to "infinity", if
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* the operating system has that concept. #ISC_RESOURCE_UNLIMITED
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* can be used to explicitly ask for the maximum.
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*
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* Requires:
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*\li 'resource' is a valid member of the isc_resource_t enumeration.
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*
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* Returns:
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*\li #ISC_R_SUCCESS Success.
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*\li #ISC_R_NOTIMPLEMENTED 'resource' is not a type known by the OS.
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*\li #ISC_R_NOPERM The calling process did not have adequate permission
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* to change the resource limit.
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*/
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isc_result_t
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isc_resource_getlimit(isc_resource_t resource, isc_resourcevalue_t *value);
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/*%<
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* Get the maximum limit for a system resource.
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*
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* Notes:
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*\li 'value' is set to the maximum limit.
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*
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*\li #ISC_RESOURCE_UNLIMITED is the maximum value of isc_resourcevalue_t.
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*
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*\li On many (all?) Unix systems, RLIM_INFINITY is a valid value that is
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* significantly less than #ISC_RESOURCE_UNLIMITED, but which in practice
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* behaves the same.
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*
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*\li The current ISC libdns configuration file parser assigns a value
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* of ISC_UINT32_MAX for a size_spec of "unlimited" and ISC_UNIT32_MAX - 1
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* for "default", the latter of which is supposed to represent "the
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* limit that was in force when the server started". Since these are
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* valid values in the middle of the range of isc_resourcevalue_t,
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* there is the possibility for confusion over what exactly those
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* particular values are supposed to represent in a particular context --
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* discrete integral values or generalized concepts.
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*
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* Requires:
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*\li 'resource' is a valid member of the isc_resource_t enumeration.
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*
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* Returns:
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*\li #ISC_R_SUCCESS Success.
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*\li #ISC_R_NOTIMPLEMENTED 'resource' is not a type known by the OS.
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*/
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isc_result_t
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isc_resource_getcurlimit(isc_resource_t resource, isc_resourcevalue_t *value);
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/*%<
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* Same as isc_resource_getlimit(), but returns the current (soft) limit.
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*
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* Returns:
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*\li #ISC_R_SUCCESS Success.
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*\li #ISC_R_NOTIMPLEMENTED 'resource' is not a type known by the OS.
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*/
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ISC_LANG_ENDDECLS
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#endif /* ISC_RESOURCE_H */
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