diff options
Diffstat (limited to 'contrib/netbsd-tests/kernel/msg.h')
| -rw-r--r-- | contrib/netbsd-tests/kernel/msg.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/kernel/msg.h b/contrib/netbsd-tests/kernel/msg.h new file mode 100644 index 0000000..547400e --- /dev/null +++ b/contrib/netbsd-tests/kernel/msg.h @@ -0,0 +1,136 @@ +/* $NetBSD: msg.h,v 1.1 2016/12/05 20:10:10 christos Exp $ */ + +/*- + * Copyright (c) 2016 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Christos Zoulas. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +struct msg_fds { + int pfd[2]; + int cfd[2]; +}; + +#define CLOSEFD(fd) do { \ + if (fd != -1) { \ + close(fd); \ + fd = -1; \ + } \ +} while (/*CONSTCOND*/ 0) + +static int +msg_open(struct msg_fds *fds) +{ + if (pipe(fds->pfd) == -1) + return -1; + if (pipe(fds->cfd) == -1) { + close(fds->pfd[0]); + close(fds->pfd[1]); + return -1; + } + return 0; +} + +static void +msg_close(struct msg_fds *fds) +{ + CLOSEFD(fds->pfd[0]); + CLOSEFD(fds->pfd[1]); + CLOSEFD(fds->cfd[0]); + CLOSEFD(fds->cfd[1]); +} + +static int +msg_write_child(const char *info, struct msg_fds *fds, void *msg, size_t len) +{ + ssize_t rv; + CLOSEFD(fds->cfd[1]); + CLOSEFD(fds->pfd[0]); + + printf("Send %s\n", info); + rv = write(fds->pfd[1], msg, len); + if (rv != (ssize_t)len) + return 1; +// printf("Wait %s\n", info); + rv = read(fds->cfd[0], msg, len); + if (rv != (ssize_t)len) + return 1; + return 0; +} + +static int +msg_write_parent(const char *info, struct msg_fds *fds, void *msg, size_t len) +{ + ssize_t rv; + CLOSEFD(fds->pfd[1]); + CLOSEFD(fds->cfd[0]); + + printf("Send %s\n", info); + rv = write(fds->cfd[1], msg, len); + if (rv != (ssize_t)len) + return 1; +// printf("Wait %s\n", info); + rv = read(fds->pfd[0], msg, len); + if (rv != (ssize_t)len) + return 1; + return 0; +} + +static int +msg_read_parent(const char *info, struct msg_fds *fds, void *msg, size_t len) +{ + ssize_t rv; + CLOSEFD(fds->pfd[1]); + CLOSEFD(fds->cfd[0]); + + printf("Wait %s\n", info); + rv = read(fds->pfd[0], msg, len); + if (rv != (ssize_t)len) + return 1; +// printf("Send %s\n", info); + rv = write(fds->cfd[1], msg, len); + if (rv != (ssize_t)len) + return 1; + return 0; +} + +static int +msg_read_child(const char *info, struct msg_fds *fds, void *msg, size_t len) +{ + ssize_t rv; + CLOSEFD(fds->cfd[1]); + CLOSEFD(fds->pfd[0]); + + printf("Wait %s\n", info); + rv = read(fds->cfd[0], msg, len); + if (rv != (ssize_t)len) + return 1; +// printf("Send %s\n", info); + rv = write(fds->pfd[1], msg, len); + if (rv != (ssize_t)len) + return 1; + return 0; +} |
