83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2015 Nahanni Systems, Inc.
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* All rights reserved.
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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 AUTHOR ``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 AUTHOR 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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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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#include "sockstream.h"
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ssize_t
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stream_read(int fd, void *buf, ssize_t nbytes)
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{
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uint8_t *p;
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ssize_t len = 0;
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ssize_t n;
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p = buf;
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while (len < nbytes) {
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n = read(fd, p + len, nbytes - len);
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if (n == 0)
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break;
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if (n < 0) {
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if (errno == EINTR || errno == EAGAIN)
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continue;
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return (n);
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}
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len += n;
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}
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return (len);
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}
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ssize_t
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stream_write(int fd, const void *buf, ssize_t nbytes)
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{
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const uint8_t *p;
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ssize_t len = 0;
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ssize_t n;
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p = buf;
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while (len < nbytes) {
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n = write(fd, p + len, nbytes - len);
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if (n == 0)
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break;
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if (n < 0) {
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if (errno == EINTR || errno == EAGAIN)
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continue;
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return (n);
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}
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len += n;
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}
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return (len);
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}
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