08e238e949
Don't depend on sin_len. Slightly factor out code for setting non-blocking IO. Bump to pbulk-0.2. Tested by dmcmahill@.
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/* $NetBSD: atomic.c,v 1.2 2007/06/25 21:38:43 joerg Exp $ */
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/*-
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* Copyright (c) 2007 Joerg Sonnenberger <joerg@NetBSD.org>.
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* All rights reserved.
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*
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* This code was developed as part of Google's Summer of Code 2007 program.
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* 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 <nbcompat.h>
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#include <nbcompat/stat.h>
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#include <nbcompat/err.h>
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#include <fcntl.h>
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#include <nbcompat/limits.h>
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#include <nbcompat/string.h>
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#include <nbcompat/unistd.h>
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#include "pbulk.h"
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ssize_t
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atomic_read(int fd, void *real_buf, size_t bytes)
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{
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char *buf = real_buf;
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ssize_t len;
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ssize_t ret;
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len = 0;
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do {
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ret = read(fd, buf, bytes);
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if (ret == -1)
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return ret;
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buf += ret;
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len += ret;
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bytes -= ret;
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} while (ret != 0 && bytes != 0);
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return len;
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}
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ssize_t
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atomic_write(int fd, const void *real_buf, size_t bytes)
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{
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const char *buf = real_buf;
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ssize_t len;
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ssize_t ret;
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len = 0;
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do {
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ret = write(fd, buf, bytes);
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if (ret == -1)
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return ret;
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buf += ret;
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len += ret;
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bytes -= ret;
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} while (ret != 0 && bytes != 0);
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return len;
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}
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