selftests: Add test plan API to kselftest.h and adjust callers
[sfrench/cifs-2.6.git] / tools / testing / selftests / futex / functional / futex_wait_private_mapped_file.c
1 /******************************************************************************
2  *
3  * Copyright FUJITSU LIMITED 2010
4  * Copyright KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
5  *
6  *   This program is free software;  you can redistribute it and/or modify
7  *   it under the terms of the GNU General Public License as published by
8  *   the Free Software Foundation; either version 2 of the License, or
9  *   (at your option) any later version.
10  *
11  * DESCRIPTION
12  *      Internally, Futex has two handling mode, anon and file. The private file
13  *      mapping is special. At first it behave as file, but after write anything
14  *      it behave as anon. This test is intent to test such case.
15  *
16  * AUTHOR
17  *      KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
18  *
19  * HISTORY
20  *      2010-Jan-6: Initial version by KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
21  *
22  *****************************************************************************/
23
24 #include <stdio.h>
25 #include <stdlib.h>
26 #include <syscall.h>
27 #include <unistd.h>
28 #include <errno.h>
29 #include <linux/futex.h>
30 #include <pthread.h>
31 #include <libgen.h>
32 #include <signal.h>
33
34 #include "logging.h"
35 #include "futextest.h"
36
37 #define TEST_NAME "futex-wait-private-mapped-file"
38 #define PAGE_SZ 4096
39
40 char pad[PAGE_SZ] = {1};
41 futex_t val = 1;
42 char pad2[PAGE_SZ] = {1};
43
44 #define WAKE_WAIT_US 3000000
45 struct timespec wait_timeout = { .tv_sec = 5, .tv_nsec = 0};
46
47 void usage(char *prog)
48 {
49         printf("Usage: %s\n", prog);
50         printf("  -c    Use color\n");
51         printf("  -h    Display this help message\n");
52         printf("  -v L  Verbosity level: %d=QUIET %d=CRITICAL %d=INFO\n",
53                VQUIET, VCRITICAL, VINFO);
54 }
55
56 void *thr_futex_wait(void *arg)
57 {
58         int ret;
59
60         info("futex wait\n");
61         ret = futex_wait(&val, 1, &wait_timeout, 0);
62         if (ret && errno != EWOULDBLOCK && errno != ETIMEDOUT) {
63                 error("futex error.\n", errno);
64                 print_result(TEST_NAME, RET_ERROR);
65                 exit(RET_ERROR);
66         }
67
68         if (ret && errno == ETIMEDOUT)
69                 fail("waiter timedout\n");
70
71         info("futex_wait: ret = %d, errno = %d\n", ret, errno);
72
73         return NULL;
74 }
75
76 int main(int argc, char **argv)
77 {
78         pthread_t thr;
79         int ret = RET_PASS;
80         int res;
81         int c;
82
83         while ((c = getopt(argc, argv, "chv:")) != -1) {
84                 switch (c) {
85                 case 'c':
86                         log_color(1);
87                         break;
88                 case 'h':
89                         usage(basename(argv[0]));
90                         exit(0);
91                 case 'v':
92                         log_verbosity(atoi(optarg));
93                         break;
94                 default:
95                         usage(basename(argv[0]));
96                         exit(1);
97                 }
98         }
99
100         ksft_print_header();
101         ksft_set_plan(1);
102         ksft_print_msg(
103                 "%s: Test the futex value of private file mappings in FUTEX_WAIT\n",
104                 basename(argv[0]));
105
106         ret = pthread_create(&thr, NULL, thr_futex_wait, NULL);
107         if (ret < 0) {
108                 fprintf(stderr, "pthread_create error\n");
109                 ret = RET_ERROR;
110                 goto out;
111         }
112
113         info("wait a while\n");
114         usleep(WAKE_WAIT_US);
115         val = 2;
116         res = futex_wake(&val, 1, 0);
117         info("futex_wake %d\n", res);
118         if (res != 1) {
119                 fail("FUTEX_WAKE didn't find the waiting thread.\n");
120                 ret = RET_FAIL;
121         }
122
123         info("join\n");
124         pthread_join(thr, NULL);
125
126  out:
127         print_result(TEST_NAME, ret);
128         return ret;
129 }