cdebaff820
This contains some new testcases in /usr/tests/...: - .../lib/libc - .../lib/libthr - .../lib/msun - .../sys/kern Tested on: amd64, i386 MFC after: 1 month
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/* $NetBSD: msg.h,v 1.1 2016/12/05 20:10:10 christos Exp $ */
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/*-
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* Copyright (c) 2016 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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struct msg_fds {
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int pfd[2];
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int cfd[2];
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};
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#define CLOSEFD(fd) do { \
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if (fd != -1) { \
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close(fd); \
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fd = -1; \
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} \
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} while (/*CONSTCOND*/ 0)
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static int
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msg_open(struct msg_fds *fds)
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{
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if (pipe(fds->pfd) == -1)
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return -1;
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if (pipe(fds->cfd) == -1) {
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close(fds->pfd[0]);
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close(fds->pfd[1]);
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return -1;
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}
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return 0;
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}
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static void
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msg_close(struct msg_fds *fds)
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{
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CLOSEFD(fds->pfd[0]);
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CLOSEFD(fds->pfd[1]);
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CLOSEFD(fds->cfd[0]);
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CLOSEFD(fds->cfd[1]);
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}
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static int
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msg_write_child(const char *info, struct msg_fds *fds, void *msg, size_t len)
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{
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ssize_t rv;
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CLOSEFD(fds->cfd[1]);
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CLOSEFD(fds->pfd[0]);
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printf("Send %s\n", info);
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rv = write(fds->pfd[1], msg, len);
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if (rv != (ssize_t)len)
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return 1;
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// printf("Wait %s\n", info);
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rv = read(fds->cfd[0], msg, len);
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if (rv != (ssize_t)len)
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return 1;
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return 0;
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}
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static int
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msg_write_parent(const char *info, struct msg_fds *fds, void *msg, size_t len)
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{
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ssize_t rv;
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CLOSEFD(fds->pfd[1]);
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CLOSEFD(fds->cfd[0]);
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printf("Send %s\n", info);
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rv = write(fds->cfd[1], msg, len);
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if (rv != (ssize_t)len)
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return 1;
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// printf("Wait %s\n", info);
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rv = read(fds->pfd[0], msg, len);
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if (rv != (ssize_t)len)
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return 1;
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return 0;
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}
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static int
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msg_read_parent(const char *info, struct msg_fds *fds, void *msg, size_t len)
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{
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ssize_t rv;
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CLOSEFD(fds->pfd[1]);
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CLOSEFD(fds->cfd[0]);
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printf("Wait %s\n", info);
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rv = read(fds->pfd[0], msg, len);
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if (rv != (ssize_t)len)
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return 1;
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// printf("Send %s\n", info);
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rv = write(fds->cfd[1], msg, len);
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if (rv != (ssize_t)len)
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return 1;
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return 0;
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}
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static int
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msg_read_child(const char *info, struct msg_fds *fds, void *msg, size_t len)
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{
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ssize_t rv;
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CLOSEFD(fds->cfd[1]);
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CLOSEFD(fds->pfd[0]);
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printf("Wait %s\n", info);
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rv = read(fds->cfd[0], msg, len);
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if (rv != (ssize_t)len)
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return 1;
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// printf("Send %s\n", info);
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rv = write(fds->pfd[1], msg, len);
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if (rv != (ssize_t)len)
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return 1;
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return 0;
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}
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