1/*-
2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28#include <sys/param.h>
29#include <sys/stat.h>
30#include <err.h>
31#include <fcntl.h>
32#include <stdio.h>
33#include <stdlib.h>
34#include <string.h>
35#include <unistd.h>
36
37#include "stress.h"
38
39static unsigned long size;
40
41int
42setup(int nb)
43{
44	int64_t in;
45	int64_t bl;
46	int64_t reserve_in;
47	int64_t reserve_bl;
48
49	umask(0);
50
51	if (nb == 0) {
52		getdf(&bl, &in);
53		size = in / op->incarnations;
54
55		if (size > 1000)
56			size = 1000;	/* arbitrary limit number of files pr. dir */
57
58		/* Resource requirements: */
59		while (size > 0) {
60			reserve_in =  2 * size * op->incarnations + 2 * op->incarnations;
61			reserve_bl = 30 * size * op->incarnations;
62			if (reserve_bl <= bl && reserve_in <= in)
63				break;
64			size = size / 2;
65		}
66		if (size == 0)
67			reserve_bl = reserve_in = 0;
68
69		if (op->verbose > 1)
70			printf("rename(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n",
71				size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in);
72		reservedf(reserve_bl, reserve_in);
73		putval(size);
74	} else {
75		size = getval();
76	}
77	if (size == 0)
78		exit(0);
79
80	return (0);
81}
82
83void
84cleanup(void)
85{
86}
87
88static void
89test_rename(void)
90{
91	int i, j;
92	pid_t pid;
93	char file1[128];
94	char file2[128];
95	int tfd;
96
97	pid = getpid();
98	for (i = 0; i < (int)size; i++) {
99		sprintf(file1,"p%05d.%05d", pid, i);
100		if ((tfd = open(file1, O_RDONLY|O_CREAT, 0660)) == -1)
101			err(1, "openat(%s), %s:%d", file1, __FILE__, __LINE__);
102		close(tfd);
103	}
104	for (j = 0; j < 100 && done_testing == 0; j++) {
105		for (i = 0; i < (int)size; i++) {
106			sprintf(file1,"p%05d.%05d", pid, i);
107			sprintf(file2,"p%05d.%05d.togo", pid, i);
108			if (rename(file1, file2) == -1)
109				err(1, "rename(%s, %s). %s:%d", file1, file2,
110						__FILE__, __LINE__);
111		}
112		for (i = 0; i < (int)size; i++) {
113			sprintf(file1,"p%05d.%05d", pid, i);
114			sprintf(file2,"p%05d.%05d.togo", pid, i);
115			if (rename(file2, file1) == -1)
116				err(1, "rename(%s, %s). %s:%d", file2, file1,
117						__FILE__, __LINE__);
118		}
119	}
120
121	for (i = 0; i < (int)size; i++) {
122		sprintf(file1,"p%05d.%05d", pid, i);
123		if (unlink(file1) == -1)
124			err(1, "unlink(%s), %s:%d", file1, __FILE__, __LINE__);
125	}
126}
127
128int
129test(void)
130{
131	test_rename();
132
133	return (0);
134}
135