xref: /freebsd/tools/test/stress2/misc/pty.sh (revision 8a272653d9fbd9fc37691c9aad6a05089b4ecb4d)
1*8a272653SPeter Holm#!/bin/sh
2*8a272653SPeter Holm
3*8a272653SPeter Holm#
4*8a272653SPeter Holm# Copyright (c) 2016 EMC Corp.
5*8a272653SPeter Holm# All rights reserved.
6*8a272653SPeter Holm#
7*8a272653SPeter Holm# Redistribution and use in source and binary forms, with or without
8*8a272653SPeter Holm# modification, are permitted provided that the following conditions
9*8a272653SPeter Holm# are met:
10*8a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright
11*8a272653SPeter Holm#    notice, this list of conditions and the following disclaimer.
12*8a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright
13*8a272653SPeter Holm#    notice, this list of conditions and the following disclaimer in the
14*8a272653SPeter Holm#    documentation and/or other materials provided with the distribution.
15*8a272653SPeter Holm#
16*8a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17*8a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*8a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*8a272653SPeter Holm# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20*8a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*8a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22*8a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23*8a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24*8a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25*8a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*8a272653SPeter Holm# SUCH DAMAGE.
27*8a272653SPeter Holm#
28*8a272653SPeter Holm
29*8a272653SPeter Holm# pty(4) test scenario.
30*8a272653SPeter Holm
31*8a272653SPeter Holm# "panic: make_dev_credv: bad si_name (error=17, si_name=ptysn)" seen.
32*8a272653SPeter Holm# https://people.freebsd.org/~pho/stress/log/pty.txt
33*8a272653SPeter Holm
34*8a272653SPeter Holm# /dev/pty[l-sL-S][0-9a-v]  Pseudo-terminal master devices.
35*8a272653SPeter Holm# /dev/tty[l-sL-S][0-9a-v]  Pseudo-terminal slave devices.
36*8a272653SPeter Holm
37*8a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
38*8a272653SPeter Holm
39*8a272653SPeter Holm. ../default.cfg
40*8a272653SPeter Holm
41*8a272653SPeter Holmkldstat -v | grep -q pty || { kldload pty || exit 0; }
42*8a272653SPeter Holm
43*8a272653SPeter Holmhere=`pwd`
44*8a272653SPeter Holmcd /tmp
45*8a272653SPeter Holmsed '1,/^EOF/d' < $here/$0 > pty.c
46*8a272653SPeter Holmmycc -o pty -Wall -Wextra -O2 pty.c || exit 1
47*8a272653SPeter Holmrm -f pty.c
48*8a272653SPeter Holm
49*8a272653SPeter Holmsu $testuser -c /tmp/pty
50*8a272653SPeter Holm
51*8a272653SPeter Holmrm -f /tmp/pty
52*8a272653SPeter Holmexit
53*8a272653SPeter HolmEOF
54*8a272653SPeter Holm#include <sys/types.h>
55*8a272653SPeter Holm#include <sys/wait.h>
56*8a272653SPeter Holm
57*8a272653SPeter Holm#include <err.h>
58*8a272653SPeter Holm#include <errno.h>
59*8a272653SPeter Holm#include <fcntl.h>
60*8a272653SPeter Holm#include <fts.h>
61*8a272653SPeter Holm#include <stdlib.h>
62*8a272653SPeter Holm#include <stdio.h>
63*8a272653SPeter Holm#include <time.h>
64*8a272653SPeter Holm#include <unistd.h>
65*8a272653SPeter Holm
66*8a272653SPeter Holm#define PARALLEL 4
67*8a272653SPeter Holm#define RUNTIME 300
68*8a272653SPeter Holm
69*8a272653SPeter Holmchar path[80];
70*8a272653SPeter Holm
71*8a272653SPeter Holmvoid
72*8a272653SPeter Holmchurn(char *path)
73*8a272653SPeter Holm{
74*8a272653SPeter Holm
75*8a272653SPeter Holm	FTS *fts;
76*8a272653SPeter Holm	FTSENT *p;
77*8a272653SPeter Holm	time_t start;
78*8a272653SPeter Holm	int fd, ftsoptions;
79*8a272653SPeter Holm	char *args[2];
80*8a272653SPeter Holm
81*8a272653SPeter Holm	ftsoptions = FTS_PHYSICAL;
82*8a272653SPeter Holm	args[0] = path;
83*8a272653SPeter Holm	args[1] = 0;
84*8a272653SPeter Holm
85*8a272653SPeter Holm	setproctitle("churn");
86*8a272653SPeter Holm	start = time(NULL);
87*8a272653SPeter Holm	while (time(NULL) - start < RUNTIME) {
88*8a272653SPeter Holm		if ((fts = fts_open(args, ftsoptions, NULL)) == NULL)
89*8a272653SPeter Holm			err(1, "fts_open");
90*8a272653SPeter Holm
91*8a272653SPeter Holm		while ((p = fts_read(fts)) != NULL) {
92*8a272653SPeter Holm			if (p->fts_info == FTS_D ||
93*8a272653SPeter Holm			   p->fts_info == FTS_DP)
94*8a272653SPeter Holm				continue;
95*8a272653SPeter Holm			if ((fd = open(p->fts_path, O_RDWR)) == -1)
96*8a272653SPeter Holm				if ((fd = open(p->fts_path, O_WRONLY)) == -1)
97*8a272653SPeter Holm					if ((fd = open(p->fts_path, O_RDONLY)) == -1)
98*8a272653SPeter Holm						continue;
99*8a272653SPeter Holm			usleep(arc4random() % 1000);
100*8a272653SPeter Holm			close(fd);
101*8a272653SPeter Holm
102*8a272653SPeter Holm		}
103*8a272653SPeter Holm
104*8a272653SPeter Holm		if (errno != 0 && errno != ENOENT)
105*8a272653SPeter Holm			err(1, "fts_read");
106*8a272653SPeter Holm		if (fts_close(fts) == -1)
107*8a272653SPeter Holm			err(1, "fts_close()");
108*8a272653SPeter Holm	}
109*8a272653SPeter Holm
110*8a272653SPeter Holm	_exit(0);
111*8a272653SPeter Holm}
112*8a272653SPeter Holm
113*8a272653SPeter Holmvoid
114*8a272653SPeter Holmpty(void)
115*8a272653SPeter Holm{
116*8a272653SPeter Holm	int fd[512], i, j, n;
117*8a272653SPeter Holm	char c1, c2;
118*8a272653SPeter Holm
119*8a272653SPeter Holm	n = 0;
120*8a272653SPeter Holm	c1 = 'l';
121*8a272653SPeter Holm	for (i = 0; i < 16; i++) {
122*8a272653SPeter Holm		c2 = '0';
123*8a272653SPeter Holm		for (j = 0; j < 32; j++) {
124*8a272653SPeter Holm			snprintf(path, sizeof(path), "/dev/pty%c%c", c1, c2);
125*8a272653SPeter Holm			fd[n++] = open(path, O_RDWR);
126*8a272653SPeter Holm			if (c2 == '9')
127*8a272653SPeter Holm				c2 = 'a';
128*8a272653SPeter Holm			else
129*8a272653SPeter Holm				c2++;
130*8a272653SPeter Holm		}
131*8a272653SPeter Holm		if (c1 == 's')
132*8a272653SPeter Holm			c1 = 'L';
133*8a272653SPeter Holm		else
134*8a272653SPeter Holm			c1++;
135*8a272653SPeter Holm	}
136*8a272653SPeter Holm
137*8a272653SPeter Holm	for (i = 0; i < n; i++)
138*8a272653SPeter Holm		if (fd[i] != -1)
139*8a272653SPeter Holm			close(fd[i]);
140*8a272653SPeter Holm}
141*8a272653SPeter Holm
142*8a272653SPeter Holmint
143*8a272653SPeter Holmmain(void)
144*8a272653SPeter Holm{
145*8a272653SPeter Holm	int i;
146*8a272653SPeter Holm
147*8a272653SPeter Holm	time_t start;
148*8a272653SPeter Holm
149*8a272653SPeter Holm	for (i = 0; i < PARALLEL; i++)
150*8a272653SPeter Holm		if (fork() == 0)
151*8a272653SPeter Holm			churn("/dev");
152*8a272653SPeter Holm
153*8a272653SPeter Holm	start = time(NULL);
154*8a272653SPeter Holm	while (time(NULL) - start < RUNTIME)
155*8a272653SPeter Holm		pty();
156*8a272653SPeter Holm
157*8a272653SPeter Holm	for (i = 0; i < PARALLEL; i++)
158*8a272653SPeter Holm		wait(NULL);
159*8a272653SPeter Holm
160*8a272653SPeter Holm	return (0);
161*8a272653SPeter Holm}
162