svn commit: r332921 - user/pho/stress2/misc
Peter Holm
pho at FreeBSD.org
Tue Apr 24 10:03:18 UTC 2018
Author: pho
Date: Tue Apr 24 10:03:16 2018
New Revision: 332921
URL: https://svnweb.freebsd.org/changeset/base/332921
Log:
One more mkfifo(2) test.
Sponsored by: Dell EMC Isilon
Added:
user/pho/stress2/misc/mkfifo4.sh (contents, props changed)
Added: user/pho/stress2/misc/mkfifo4.sh
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ user/pho/stress2/misc/mkfifo4.sh Tue Apr 24 10:03:16 2018 (r332921)
@@ -0,0 +1,188 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2015 EMC Corp.
+# All rights reserved.
+#
+# 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 AUTHOR 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 AUTHOR 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.
+#
+# $FreeBSD$
+#
+
+. ../default.cfg
+
+# "Assertion vap->va_type == VDIR failed" seen on non HEAD.
+
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/mkfifo4.c
+mycc -o mkfifo4 -Wall -Wextra -O0 -g mkfifo4.c || exit 1
+rm -f mkfifo4.c
+cd $odir
+
+fifo=/tmp/mkfifo4.fifo
+trap "rm -f $fifo /tmp/mkfifo4" EXIT INT
+
+export runRUNTIME=5m
+(cd ..; ./run.sh disk.cfg) > /dev/null 2>&1 &
+sleep .2
+
+while pgrep -fq run.sh; do
+ timeout 300 /tmp/mkfifo4 | grep -v Done
+ [ $? -eq 124 ] &&
+ { echo "Timedout"; exit 1; }
+done
+wait
+
+exit $s
+EOF
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define ATIME 1
+#define MXRETRY 100
+#define LOOPS 1000000
+
+volatile int sigs;
+char file[] = "/tmp/mkfifo4.fifo";
+
+static void
+hand(int i __unused) { /* handler */
+ sigs++;
+}
+
+int
+main(void)
+{
+ pid_t pid, hpid;
+ struct sigaction sa;
+ int e, fd, fd2, i, status;
+ int failures, r, retries, w;
+ char c;
+
+ sa.sa_handler = hand;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0;
+ if (sigaction(SIGALRM, &sa, NULL) == -1)
+ err(1, "sigaction");
+
+ sa.sa_handler = SIG_IGN;
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0;
+ if (sigaction(SIGPIPE, &sa, NULL) == -1)
+ err(1, "sigaction");
+
+ unlink(file);
+ if (mkfifo(file, 0640) == -1)
+ err(1, "mkfifo(%s)", file);
+ if ((hpid = fork()) == 0) {
+ if ((fd2 = open(file, O_WRONLY | O_APPEND)) == -1)
+ err(1, "hold open of fifo");
+ for (;;)
+ pause();
+ _exit(0);
+ }
+
+ if ((pid = fork()) == 0) {
+ setproctitle("child");
+ r = 0;
+ for (i = 0; i < LOOPS; i++) {
+ failures = 0;
+restart:
+ do {
+ if ((fd = open(file, O_RDONLY |
+ O_NONBLOCK)) == -1)
+ if (errno != EINTR) /* on OS X */
+ err(1, "open(%s, O_RDONLY)",
+ file);
+ } while (fd == -1);
+ retries = 0;
+ do {
+ if ((e = read(fd, &c, 1)) == -1) {
+ if (errno != EINTR &&
+ errno != EAGAIN)
+ err(1, "read(%d, ...)", fd);
+ } else if (retries++ > MXRETRY) {
+ close(fd);
+ usleep(1000);
+ fprintf(stderr,
+ "Re-open for read @ %d\n", i);
+ if (failures++ > 100)
+ errx(1,
+ "FAIL: Failure to read");
+ goto restart;
+ }
+ } while (e <= 0);
+ r++;
+ ualarm(ATIME, 0);
+ if (close(fd) == -1)
+ err(1, "close() in child");
+ alarm(0);
+ }
+ fprintf(stdout, "Done child. %d reads, %d signals.\n", r,
+ sigs);
+ fflush(stdout);
+ _exit(0);
+ }
+ setproctitle("parent");
+ w = 0;
+ for (i = 0; i < LOOPS; i++) {
+ do {
+ if ((fd = open(file, O_WRONLY | O_APPEND |
+ O_NONBLOCK)) == -1)
+ if (errno != EINTR && errno != ENXIO)
+ err(1, "open(%s, O_WRONLY)", file);
+ } while (fd == -1);
+ do {
+ if ((e = write(fd, "a", 1)) != 1)
+ if (errno != EPIPE && errno != EAGAIN)
+ err(1, "write(%d, ...)", fd);
+ } while (e == -1);
+ w++;
+ ualarm(ATIME, 0);
+ if (close(fd) == -1)
+ err(1, "close() in parent");
+ alarm(0);
+ }
+ fprintf(stdout, "Done parent. %d writes, %d signals.\n", w, sigs);
+
+ if (waitpid(pid, &status, 0) == -1)
+ err(1, "wait");
+ if (kill(hpid, SIGHUP) == -1)
+ err(1, "kill %d", hpid);
+ if (waitpid(hpid, NULL, 0) == -1)
+ err(1, "wait");
+ if (unlink(file) == -1)
+ err(1, "unlink(%s)", file);
+
+ return (WEXITSTATUS(status));
+}
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