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annotate atomicio.c @ 1659:d32bcb5c557d

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Add Ed25519 support (#91) * Add support for Ed25519 as a public key type Ed25519 is a elliptic curve signature scheme that offers better security than ECDSA and DSA and good performance. It may be used for both user and host keys. OpenSSH key import and fuzzer are not supported yet. Initially inspired by Peter Szabo. * Add curve25519 and ed25519 fuzzers * Add import and export of Ed25519 keys
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Wed, 11 Mar 2020 21:09:45 +0500
parents 83d85b28b353
children
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rev   line source
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1 /* $OpenBSD: atomicio.c,v 1.17 2006/04/01 05:51:34 djm Exp $ */
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2 /*
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3 * Copied from OpenSSH/OpenBSD.
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4 *
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5 * Copyright (c) 2005 Anil Madhavapeddy. All rights reserved.
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6 * Copyright (c) 1995,1999 Theo de Raadt. All rights reserved.
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7 * All rights reserved.
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8 *
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9 * Redistribution and use in source and binary forms, with or without
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10 * modification, are permitted provided that the following conditions
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11 * are met:
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12 * 1. Redistributions of source code must retain the above copyright
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13 * notice, this list of conditions and the following disclaimer.
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14 * 2. Redistributions in binary form must reproduce the above copyright
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15 * notice, this list of conditions and the following disclaimer in the
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16 * documentation and/or other materials provided with the distribution.
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17 *
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18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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28 */
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29
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30 #include "includes.h"
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32 #include "atomicio.h"
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33
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34 /*
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35 * ensure all of data on socket comes through. f==read || f==vwrite
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36 */
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37 size_t
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38 atomicio(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n)
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39 {
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40 char *s = _s;
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41 size_t pos = 0;
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42 ssize_t res;
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44 while (n > pos) {
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45 res = (f) (fd, s + pos, n - pos);
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46 switch (res) {
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47 case -1:
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48 if (errno == EINTR || errno == EAGAIN)
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49 continue;
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50 return 0;
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51 case 0:
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52 errno = EPIPE;
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53 return pos;
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54 default:
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55 pos += (size_t)res;
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56 }
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57 }
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58 return (pos);
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59 }