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161 lines
3.5 KiB
Bash
Executable file
161 lines
3.5 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2016 EMC Corp.
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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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# pty(4) test scenario.
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# "panic: make_dev_credv: bad si_name (error=17, si_name=ptysn)" seen.
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# https://people.freebsd.org/~pho/stress/log/pty.txt
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# /dev/pty[l-sL-S][0-9a-v] Pseudo-terminal master devices.
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# /dev/tty[l-sL-S][0-9a-v] Pseudo-terminal slave devices.
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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kldstat -v | grep -q pty || { kldload pty || exit 0; }
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here=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $here/$0 > pty.c
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mycc -o pty -Wall -Wextra -O2 pty.c || exit 1
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rm -f pty.c
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su $testuser -c /tmp/pty
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rm -f /tmp/pty
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exit
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EOF
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <fts.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <unistd.h>
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#define PARALLEL 4
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#define RUNTIME 300
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char path[80];
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void
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churn(char *path)
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{
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FTS *fts;
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FTSENT *p;
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time_t start;
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int fd, ftsoptions;
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char *args[2];
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ftsoptions = FTS_PHYSICAL;
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args[0] = path;
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args[1] = 0;
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setproctitle("churn");
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start = time(NULL);
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while (time(NULL) - start < RUNTIME) {
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if ((fts = fts_open(args, ftsoptions, NULL)) == NULL)
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err(1, "fts_open");
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while ((p = fts_read(fts)) != NULL) {
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if (p->fts_info == FTS_D ||
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p->fts_info == FTS_DP)
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continue;
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if ((fd = open(p->fts_path, O_RDWR)) == -1)
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if ((fd = open(p->fts_path, O_WRONLY)) == -1)
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if ((fd = open(p->fts_path, O_RDONLY)) == -1)
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continue;
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usleep(arc4random() % 1000);
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close(fd);
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}
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if (errno != 0 && errno != ENOENT)
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err(1, "fts_read");
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if (fts_close(fts) == -1)
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err(1, "fts_close()");
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}
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_exit(0);
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}
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void
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pty(void)
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{
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int fd[512], i, j, n;
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char c1, c2;
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n = 0;
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c1 = 'l';
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for (i = 0; i < 16; i++) {
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c2 = '0';
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for (j = 0; j < 32; j++) {
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snprintf(path, sizeof(path), "/dev/pty%c%c", c1, c2);
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fd[n++] = open(path, O_RDWR);
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if (c2 == '9')
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c2 = 'a';
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else
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c2++;
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}
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if (c1 == 's')
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c1 = 'L';
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else
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c1++;
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}
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for (i = 0; i < n; i++)
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if (fd[i] != -1)
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close(fd[i]);
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}
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int
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main(void)
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{
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int i;
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time_t start;
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for (i = 0; i < PARALLEL; i++)
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if (fork() == 0)
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churn("/dev");
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start = time(NULL);
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while (time(NULL) - start < RUNTIME)
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pty();
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for (i = 0; i < PARALLEL; i++)
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wait(NULL);
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return (0);
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}
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