diff options
Diffstat (limited to 'sys/kern/subr_dnvlist.c')
| -rw-r--r-- | sys/kern/subr_dnvlist.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/sys/kern/subr_dnvlist.c b/sys/kern/subr_dnvlist.c new file mode 100644 index 0000000..9058520 --- /dev/null +++ b/sys/kern/subr_dnvlist.c @@ -0,0 +1,128 @@ +/*- + * 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("$FreeBSD$"); + +#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/nv.h> +#include <sys/nv_impl.h> + +#include <sys/dnv.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); +} + |
