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4d846d260e
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix
161 lines
3.8 KiB
Bash
Executable file
161 lines
3.8 KiB
Bash
Executable file
#!/bin/sh
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2018 Dell EMC Isilon
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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 AND CONTRIBUTORS ``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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# "panic: mutex unp not owned at ../../../kern/uipc_usrreq.c:879" seen:
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# https://people.freebsd.org/~pho/stress/log/mmacy018.txt
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# Fixed by r334756.
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. ../default.cfg
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cd /tmp
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cat > unix_socket.c <<EOF
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/wait.h>
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#include <netinet/in.h>
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#include <err.h>
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#include <errno.h>
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#include <netdb.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define SOCK_FILE "/tmp/unix_socket.socket"
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static int
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client(void) {
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struct sockaddr_un addr;
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int fd, len;
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char buff[8192];
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if ((fd = socket(PF_UNIX, SOCK_DGRAM, 0)) < 0)
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err(1, "socket");
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memset(&addr, 0, sizeof(addr));
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addr.sun_family = AF_UNIX;
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strcpy(addr.sun_path, SOCK_FILE);
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unlink(SOCK_FILE);
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if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
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err(1, "bind");
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memset(&addr, 0, sizeof(addr));
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addr.sun_family = AF_UNIX;
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strcpy(addr.sun_path, SOCK_FILE);
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if (connect(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1)
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err(1, "connect");
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strcpy (buff, "1234567890");
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if (send(fd, buff, strlen(buff)+1, 0) == -1)
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err(1, "send");
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printf ("sent i1234567890\n");
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if ((len = recv(fd, buff, 8192, 0)) < 0)
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err(1, "recv");
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printf ("receive %d %s\n", len, buff);
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if (fd >= 0) {
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close(fd);
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}
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unlink (SOCK_FILE);
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return(0);
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}
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static int
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server() {
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struct sockaddr_un addr;
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struct sockaddr_un from;
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socklen_t fromlen = sizeof(from);
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int fd, len, ret;
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char buff[8192];
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unlink(SOCK_FILE);
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if ((fd = socket(PF_UNIX, SOCK_DGRAM, 0)) < 0)
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err(1, "socket");
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memset(&addr, 0, sizeof(addr));
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addr.sun_family = AF_UNIX;
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strcpy(addr.sun_path, SOCK_FILE);
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unlink(SOCK_FILE);
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if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
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err(1, "bind");
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alarm(2);
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while ((len = recvfrom(fd, buff, 8192, 0, (struct sockaddr *)&from,
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&fromlen)) > 0) {
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printf ("recvfrom: %s\n", buff);
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strcpy (buff, "transmit good!");
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ret = sendto(fd, buff, strlen(buff)+1, 0,
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(struct sockaddr *)&from, fromlen);
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if (ret < 0) {
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perror("sendto");
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break;
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}
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}
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if (fd != -1)
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close(fd);
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return (0);
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}
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int
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main(void)
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{
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pid_t pid;
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if ((pid = fork()) == -1)
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err(1, "fork");
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if (pid == 0) {
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server();
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_exit(0);
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}
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sleep(2);
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client();
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if (waitpid(pid, NULL, 0) != pid)
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err(1, "waitpid");
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return (0);
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}
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EOF
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cc -o unix_socket -Wall -Wextra -O2 -g unix_socket.c || exit
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rm unix_socket.c
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./unix_socket > /dev/null
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rm unix_socket
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exit 0
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