1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 * Copyright (c) Linux Test Project, 2022
5 */
6
7 /*\
8 * [Description]
9 *
10 * Create multiple processes which create subdirectories in the
11 * same directory multiple times within test time.
12 */
13
14 #include <stdio.h>
15 #include <sys/param.h>
16 #include "tst_test.h"
17 #include "tst_safe_pthread.h"
18
19 #define MNTPOINT "mntpoint"
20 #define MODE_RWX 07770
21 #define DIR_NAME MNTPOINT "/X.%d"
22 #define DIR_NAME_GROUP MNTPOINT "/X.%d.%d"
23 #define NCHILD 3
24
25 static int child_groups = 2;
26 static int test_time = 1;
27 static int nfiles = 10;
28 static volatile int done;
29
30 /*
31 * Routine which attempts to create directories in the test
32 * directory that already exist.
33 */
test1(int child_num)34 static void test1(int child_num)
35 {
36 int j;
37 char tmpdir[MAXPATHLEN];
38
39 while (!done) {
40 for (j = 0; j < nfiles; j += NCHILD) {
41 sprintf(tmpdir, DIR_NAME, j);
42 TST_EXP_FAIL_SILENT(mkdir(tmpdir, MODE_RWX), EEXIST);
43 if (!TST_PASS)
44 break;
45 }
46 }
47 tst_res(TPASS, "[%d] create dirs that already exist", child_num);
48 }
49
50 /*
51 * Child routine which attempts to remove directories from the
52 * test directory which do not exist.
53 */
test2(int child_num)54 static void test2(int child_num)
55 {
56 int j;
57 char tmpdir[MAXPATHLEN];
58
59 while (!done) {
60 for (j = 1; j < nfiles; j += NCHILD) {
61 sprintf(tmpdir, DIR_NAME, j);
62 TST_EXP_FAIL_SILENT(rmdir(tmpdir), ENOENT);
63 if (!TST_PASS)
64 break;
65 }
66 }
67 tst_res(TPASS, "[%d] remove dirs that do not exist", child_num);
68 }
69
70 /*
71 * Child routine which creates and deletes directories in the
72 * test directory.
73 */
test3(int child_num)74 static void test3(int child_num)
75 {
76 int j;
77 char tmpdir[MAXPATHLEN];
78
79 while (!done) {
80 for (j = 2; j < nfiles; j += NCHILD) {
81 sprintf(tmpdir, DIR_NAME_GROUP, j, child_num / NCHILD);
82 TST_EXP_PASS_SILENT(mkdir(tmpdir, MODE_RWX));
83 if (!TST_PASS)
84 break;
85 }
86 for (j = 2; j < nfiles; j += NCHILD) {
87 sprintf(tmpdir, DIR_NAME_GROUP, j, child_num / NCHILD);
88 TST_EXP_PASS_SILENT(rmdir(tmpdir));
89 if (!TST_PASS)
90 break;
91 }
92 }
93 tst_res(TPASS, "[%d] create/remove dirs", child_num);
94 }
95
child_thread_func(void * arg)96 static void *child_thread_func(void *arg)
97 {
98 void (*tests[NCHILD])(int) = { test1, test2, test3 };
99 int child_num = (long)arg;
100
101 tests[child_num % NCHILD](child_num);
102
103 /* if any thread failed, make other finish as well */
104 done = 1;
105
106 return NULL;
107 }
108
verify_mkdir(void)109 static void verify_mkdir(void)
110 {
111 pthread_t child_thread[NCHILD * child_groups];
112 long i;
113
114 done = 0;
115 for (i = 0; i < child_groups * NCHILD; i++) {
116 SAFE_PTHREAD_CREATE(&child_thread[i], NULL,
117 child_thread_func, (void *)i);
118 }
119
120 sleep(test_time);
121 done = 1;
122
123 for (i = 0; i < child_groups * NCHILD; i++)
124 SAFE_PTHREAD_JOIN(child_thread[i], NULL);
125 }
126
setup(void)127 static void setup(void)
128 {
129 int j;
130 char tmpdir[MAXPATHLEN];
131
132 for (j = 0; j < nfiles; j += NCHILD) {
133 sprintf(tmpdir, DIR_NAME, j);
134 SAFE_MKDIR(tmpdir, MODE_RWX);
135 }
136 }
137
138 static struct tst_test test = {
139 .test_all = verify_mkdir,
140 .needs_root = 1,
141 .setup = setup,
142 .mount_device = 1,
143 .mntpoint = MNTPOINT,
144 .all_filesystems = 1,
145 };
146