c36e54bb32
Change consumers to include those files from sys. Add duplicated files to ObsoleteFiles. Approved by: pjd (mentor)
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*-
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* Copyright (c) 2013 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Pawel Jakub Dawidek under sponsorship from
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* the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/nv.h>
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#include <assert.h>
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#include <errno.h>
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#include <string.h>
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#include "libcapsicum.h"
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#include "libcapsicum_random.h"
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#define MAXSIZE (1024 * 1024)
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int
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cap_random_buf(cap_channel_t *chan, void *buf, size_t nbytes)
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{
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nvlist_t *nvl;
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const void *randbuf;
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uint8_t *ptr;
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size_t left, randbufsize;
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left = nbytes;
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ptr = buf;
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while (left > 0) {
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nvl = nvlist_create(0);
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nvlist_add_string(nvl, "cmd", "generate");
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nvlist_add_number(nvl, "size",
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(uint64_t)(left > MAXSIZE ? MAXSIZE : left));
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nvl = cap_xfer_nvlist(chan, nvl, 0);
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if (nvl == NULL)
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return (-1);
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if (nvlist_get_number(nvl, "error") != 0) {
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errno = (int)nvlist_get_number(nvl, "error");
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nvlist_destroy(nvl);
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return (-1);
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}
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randbuf = nvlist_get_binary(nvl, "data", &randbufsize);
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memcpy(ptr, randbuf, randbufsize);
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nvlist_destroy(nvl);
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ptr += randbufsize;
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assert(left >= randbufsize);
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left -= randbufsize;
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}
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return (0);
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}
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