210 lines
5.4 KiB
Bash
Executable File
210 lines
5.4 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2014 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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# Demonstrate that fts_read(3) will open a fifo for read.
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# Not seen on a pristine FreeBSD.
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# $ while ./fifo.sh; do date; done
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# Wed Oct 1 14:07:41 CEST 2014
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# Wed Oct 1 14:09:58 CEST 2014
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# FAIL
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# $ ps -l19547
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# UID PID PPID CPU PRI NI VSZ RSS MWCHAN STAT TT TIME COMMAND
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# 0 19547 19544 0 25 0 12176 3996 fifoor I 0 0:08.19 /tmp/fifo
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# $ gdb /tmp/fifo 19547
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# GNU gdb 6.1.1 [FreeBSD]
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# Copyright 2004 Free Software Foundation, Inc.
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# GDB is free software, covered by the GNU General Public License, and you are
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# welcome to change it and/or distribute copies of it under certain conditions.
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# Type "show copying" to see the conditions.
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# There is absolutely no warranty for GDB. Type "show warranty" for details.
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# This GDB was configured as "amd64-marcel-freebsd"...
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# Attaching to program: /tmp/fifo, process 19547
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# Reading symbols from /lib/libc.so.7...done.
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# Loaded symbols for /lib/libc.so.7
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# Reading symbols from /libexec/ld-elf.so.1...done.
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# Loaded symbols for /libexec/ld-elf.so.1
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# 0x00000008008a9ab8 in enc_openat () from /lib/libc.so.7
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# (gdb) bt
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# #0 0x00000008008a9ab8 in enc_openat () from /lib/libc.so.7
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# #1 0x00000008008a581b in fts_read () from /lib/libc.so.7
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# #2 0x00000008008a4f24 in fts_read () from /lib/libc.so.7
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# #3 0x0000000000400ee9 in test () at /tmp/fifo.c:86
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# #4 0x0000000000400fd8 in main () at /tmp/fifo.c:108
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# (gdb) f 3
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# #3 0x0000000000400ee9 in test () at /tmp/fifo.c:86
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# 86 while ((p = fts_read(fts)) != NULL) {
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# Current language: auto; currently minimal
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# (gdb)
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#
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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cat > /tmp/fifo3.c <<EOF
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#include <sys/types.h>
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#include <sys/stat.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 <fts.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define LOOPS 50
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#define PARALLEL 4
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void
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tmkfifo(void)
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{
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pid_t pid;
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int i, j;
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char name[80];
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setproctitle(__func__);
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pid = getpid();
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for (j = 0; j < LOOPS; j++) {
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for (i = 0; i < 1000; i++) {
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snprintf(name, sizeof(name), "fifo.%d.%06d", pid, i);
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if (mkfifo(name, 0644) == -1)
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err(1, "mkfifo(%s)", name);
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}
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for (i = 0; i < 1000; i++) {
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snprintf(name, sizeof(name), "fifo.%d.%06d", pid, i);
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if (unlink(name) == -1)
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err(1, "unlink(%s)", name);
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}
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}
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_exit(0);
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}
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void
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tmkdir(void)
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{
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pid_t pid;
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int i, j;
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char name[80];
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setproctitle(__func__);
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pid = getpid();
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for (j = 0; j < LOOPS; j++) {
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for (i = 0; i < 1000; i++) {
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snprintf(name, sizeof(name), "dir.%d.%06d", pid, i);
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if (mkdir(name, 0644) == -1)
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err(1, "mkdir(%s)", name);
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}
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for (i = 0; i < 1000; i++) {
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snprintf(name, sizeof(name), "dir.%d.%06d", pid, i);
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if (rmdir(name) == -1)
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err(1, "unlink(%s)", name);
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}
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}
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_exit(0);
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}
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void
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test(void)
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{
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FTS *fts;
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FTSENT *p;
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int ftsoptions, i;
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char *args[2];
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if (fork() == 0)
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tmkfifo();
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if (fork() == 0)
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tmkdir();
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ftsoptions = FTS_PHYSICAL;
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args[0] = ".";
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args[1] = 0;
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for (i = 0; i < LOOPS; i++) {
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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 defined(TEST)
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fprintf(stdout, "%s\n", p->fts_path);
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#endif
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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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wait(NULL);
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wait(NULL);
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_exit(0);
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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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for (i = 0; i < PARALLEL; i++)
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if (fork() == 0)
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test();
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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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EOF
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mycc -o /tmp/fifo3 -Wall -Wextra -O0 -g /tmp/fifo3.c || exit 1
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mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
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[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart
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mdconfig -a -t swap -s 1g -u $mdstart || exit 1
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bsdlabel -w md$mdstart auto
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newfs md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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(cd $mntpoint; /tmp/fifo3 ) &
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while pgrep -q fifo3; do
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ps -lx | grep -v grep | grep -q fifoor &&
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{ echo FAIL; exit 1; }
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sleep 2
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done
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wait
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while mount | grep $mntpoint | grep -q /dev/md; do
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umount $mntpoint || sleep 1
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done
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mdconfig -d -u $mdstart
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rm /tmp/fifo3 /tmp/fifo3.c
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