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sys/contrib/libnv/dnvlist.c
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/*- | |||||
* Copyright (c) 2013 The FreeBSD Foundation | |||||
* All rights reserved. | |||||
* | |||||
* This software was developed by Pawel Jakub Dawidek under sponsorship from | |||||
* the FreeBSD Foundation. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
*/ | |||||
#include <sys/cdefs.h> | |||||
__FBSDID("$FreeBSD: head/sys/contrib/libnv/dnvlist.c 285139 2015-07-04 16:33:37Z oshogbo $"); | |||||
#ifdef _KERNEL | |||||
#include <sys/types.h> | |||||
#include <sys/param.h> | |||||
#include <sys/kernel.h> | |||||
#include <sys/systm.h> | |||||
#include <sys/malloc.h> | |||||
#include <machine/stdarg.h> | |||||
#else | |||||
#include <stdarg.h> | |||||
#include <stdbool.h> | |||||
#include <stdint.h> | |||||
#include <stdlib.h> | |||||
#endif | |||||
#include <sys/dnv.h> | |||||
#include <sys/nv.h> | |||||
#include "nv_impl.h" | |||||
#define DNVLIST_GET(ftype, type) \ | |||||
ftype \ | |||||
dnvlist_get_##type(const nvlist_t *nvl, const char *name, ftype defval) \ | |||||
{ \ | |||||
\ | |||||
if (nvlist_exists_##type(nvl, name)) \ | |||||
return (nvlist_get_##type(nvl, name)); \ | |||||
else \ | |||||
return (defval); \ | |||||
} | |||||
DNVLIST_GET(bool, bool) | |||||
DNVLIST_GET(uint64_t, number) | |||||
DNVLIST_GET(const char *, string) | |||||
DNVLIST_GET(const nvlist_t *, nvlist) | |||||
#ifndef _KERNEL | |||||
DNVLIST_GET(int, descriptor) | |||||
#endif | |||||
#undef DNVLIST_GET | |||||
const void * | |||||
dnvlist_get_binary(const nvlist_t *nvl, const char *name, size_t *sizep, | |||||
const void *defval, size_t defsize) | |||||
{ | |||||
const void *value; | |||||
if (nvlist_exists_binary(nvl, name)) | |||||
value = nvlist_get_binary(nvl, name, sizep); | |||||
else { | |||||
if (sizep != NULL) | |||||
*sizep = defsize; | |||||
value = defval; | |||||
} | |||||
return (value); | |||||
} | |||||
#define DNVLIST_TAKE(ftype, type) \ | |||||
ftype \ | |||||
dnvlist_take_##type(nvlist_t *nvl, const char *name, ftype defval) \ | |||||
{ \ | |||||
\ | |||||
if (nvlist_exists_##type(nvl, name)) \ | |||||
return (nvlist_take_##type(nvl, name)); \ | |||||
else \ | |||||
return (defval); \ | |||||
} | |||||
DNVLIST_TAKE(bool, bool) | |||||
DNVLIST_TAKE(uint64_t, number) | |||||
DNVLIST_TAKE(char *, string) | |||||
DNVLIST_TAKE(nvlist_t *, nvlist) | |||||
#ifndef _KERNEL | |||||
DNVLIST_TAKE(int, descriptor) | |||||
#endif | |||||
#undef DNVLIST_TAKE | |||||
void * | |||||
dnvlist_take_binary(nvlist_t *nvl, const char *name, size_t *sizep, | |||||
void *defval, size_t defsize) | |||||
{ | |||||
void *value; | |||||
if (nvlist_exists_binary(nvl, name)) | |||||
value = nvlist_take_binary(nvl, name, sizep); | |||||
else { | |||||
if (sizep != NULL) | |||||
*sizep = defsize; | |||||
value = defval; | |||||
} | |||||
return (value); | |||||
} | |||||