1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) Wipro Technologies Ltd, 2003. All Rights Reserved.
4 *
5 * Author: Aniruddha Marathe <aniruddha.marathe@wipro.com>
6 *
7 * Ported to new library:
8 * 07/2019 Christian Amann <camann@suse.com>
9 */
10 /*
11 * This tests the timer_settime(2) syscall under various conditions:
12 *
13 * 1) General initialization: No old_value, no flags, 5-second-timer
14 * 2) Setting a pointer to a itimerspec struct as old_set parameter
15 * 3) Using a periodic timer
16 * 4) Using absolute time
17 *
18 * All of these tests are supposed to be successful.
19 *
20 * This is also regression test for commit:
21 * f18ddc13af98 ("alarmtimer: Use EOPNOTSUPP instead of ENOTSUPP")
22 */
23
24 #include <stdlib.h>
25 #include <errno.h>
26 #include <time.h>
27 #include <signal.h>
28 #include "tst_test.h"
29 #include "lapi/common_timers.h"
30
31 static struct timespec timenow;
32 static struct itimerspec new_set, old_set;
33 static kernel_timer_t timer;
34
35 static struct testcase {
36 struct itimerspec *old_ptr;
37 int it_value_tv_sec;
38 int it_interval_tv_sec;
39 int flag;
40 char *description;
41 } tcases[] = {
42 {NULL, 5, 0, 0, "general initialization"},
43 {&old_set, 5, 0, 0, "setting old_value"},
44 {&old_set, 0, 5, 0, "using periodic timer"},
45 {&old_set, 5, 0, TIMER_ABSTIME, "using absolute time"},
46 };
47
run(unsigned int n)48 static void run(unsigned int n)
49 {
50 unsigned int i;
51 struct testcase *tc = &tcases[n];
52
53 tst_res(TINFO, "Testing for %s:", tc->description);
54
55 for (i = 0; i < CLOCKS_DEFINED; ++i) {
56 clock_t clock = clock_list[i];
57
58 if (clock == CLOCK_PROCESS_CPUTIME_ID ||
59 clock == CLOCK_THREAD_CPUTIME_ID) {
60 if (!have_cputime_timers())
61 continue;
62 }
63
64 TEST(tst_syscall(__NR_timer_create, clock, NULL, &timer));
65 if (TST_RET != 0) {
66 if (possibly_unsupported(clock) &&
67 (TST_ERR == EINVAL || TST_ERR == ENOTSUP)) {
68 tst_res(TCONF | TTERRNO, "%s unsupported",
69 get_clock_str(clock));
70 } else {
71 tst_res(TFAIL | TTERRNO,
72 "timer_create(%s) failed",
73 get_clock_str(clock));
74 }
75 continue;
76 }
77
78 memset(&new_set, 0, sizeof(new_set));
79 memset(&old_set, 0, sizeof(old_set));
80
81 new_set.it_value.tv_sec = tc->it_value_tv_sec;
82 new_set.it_interval.tv_sec = tc->it_interval_tv_sec;
83
84 if (tc->flag & TIMER_ABSTIME) {
85 if (clock_gettime(clock, &timenow) < 0) {
86 tst_res(TFAIL,
87 "clock_gettime(%s) failed - skipping the test",
88 get_clock_str(clock));
89 continue;
90 }
91 new_set.it_value.tv_sec += timenow.tv_sec;
92 }
93
94 TEST(tst_syscall(__NR_timer_settime, timer,
95 tc->flag, &new_set, tc->old_ptr));
96
97 if (TST_RET != 0) {
98 tst_res(TFAIL | TTERRNO, "%s failed",
99 get_clock_str(clock));
100 } else {
101 tst_res(TPASS, "%s was successful",
102 get_clock_str(clock));
103 }
104
105 TEST(tst_syscall(__NR_timer_delete, timer));
106 if (TST_RET != 0)
107 tst_res(TFAIL | TTERRNO, "timer_delete() failed!");
108 }
109 }
110
sighandler(int sig)111 static void sighandler(int sig)
112 {
113 /* sighandler for CLOCK_*_ALARM */
114 tst_res(TINFO, "Caught signal %s", tst_strsig(sig));
115 }
116
setup(void)117 static void setup(void)
118 {
119 SAFE_SIGNAL(SIGALRM, sighandler);
120 }
121
122 static struct tst_test test = {
123 .test = run,
124 .needs_root = 1,
125 .tcnt = ARRAY_SIZE(tcases),
126 .setup = setup,
127 .tags = (const struct tst_tag[]) {
128 {"linux-git", "f18ddc13af98"},
129 {}
130 }
131 };
132