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138 lines
3.3 KiB
Bash
Executable file
138 lines
3.3 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2012 Peter Holm <pho@FreeBSD.org>
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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 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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# Test of access to /dev/sndstat
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# Permanent "/dev/sndstat: Device busy" seen.
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# "panic: sbuf_put_byte called with finished or corrupt sbuf" seen.
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# Fixed in r234932
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. ../default.cfg
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[ -r /dev/sndstat ] || exit 0
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here=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $here/$0 > sndstat.c
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mycc -o sndstat -Wall -Wextra sndstat.c -lpthread
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rm -f sndstat.c
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/tmp/sndstat > /dev/null
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rm -f /tmp/sndstat
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exit 0
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EOF
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#include <sys/types.h>
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#include <sys/syscall.h>
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#include <sys/uio.h>
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#include <dirent.h>
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#include <err.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <sys/wait.h>
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#include <unistd.h>
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int fd;
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char path[] = "/dev/sndstat";
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void *
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test1(void *arg __unused)
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{
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int sfd, i, n;
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char buf[512];
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n = 0;
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for (i = 0; i < 5; i++) {
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if ((sfd = open(path, O_RDONLY)) == -1)
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continue;
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read(sfd, buf, sizeof(buf));
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fprintf(stdout, "%s\n", buf);
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n++;
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close(sfd);
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}
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if (n == 0) {
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if ((sfd = open(path, O_RDONLY)) == -1)
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warn("FAIL open(%s)", path);
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if (sfd > 0)
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close(sfd);
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}
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return (0);
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}
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void *
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test2(void *arg __unused)
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{
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char buf[512];
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bzero(buf, sizeof(buf));
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if (read(fd, buf, sizeof(buf)) != -1)
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fprintf(stdout, "%s\n", buf);
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else
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warn("read()");
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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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pthread_t rp[10];
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int e, i, j;
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/* Parallel open test */
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for (i = 0; i < 10; i++) {
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if ((e = pthread_create(&rp[i], NULL, test1, NULL)) != 0)
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errc(1, e, "pthread_create");
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}
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for (i = 0; i < 10; i++)
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pthread_join(rp[i], NULL);
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/* Parallel read test */
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for (i = 0; i < 10; i++) {
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if ((fd = open(path, O_RDONLY)) == -1) {
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warn("open()");
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continue;
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}
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for (j = 0; j < 4; j++)
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if ((e = pthread_create(&rp[j], NULL, test2, NULL)) != 0)
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errc(1, e, "pthread_create");
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for (j = 0; j < 4; j++)
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pthread_join(rp[j], NULL);
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close(fd);
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}
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return (0);
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}
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