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
21 #include <stdlib.h>
22 #include <errno.h>
23 #include <time.h>
24 #include <signal.h>
25 #include "tst_test.h"
26 #include "lapi/common_timers.h"
27
28 static struct timespec timenow;
29 static struct itimerspec new_set, old_set;
30 static kernel_timer_t timer;
31
32 static struct testcase {
33 struct itimerspec *old_ptr;
34 int it_value_tv_sec;
35 int it_interval_tv_sec;
36 int flag;
37 char *description;
38 } tcases[] = {
39 {NULL, 5, 0, 0, "general initialization"},
40 {&old_set, 5, 0, 0, "setting old_value"},
41 {&old_set, 0, 5, 0, "using periodic timer"},
42 {&old_set, 5, 0, TIMER_ABSTIME, "using absolute time"},
43 };
44
run(unsigned int n)45 static void run(unsigned int n)
46 {
47 unsigned int i;
48 struct testcase *tc = &tcases[n];
49
50 tst_res(TINFO, "Testing for %s:", tc->description);
51
52 for (i = 0; i < CLOCKS_DEFINED; ++i) {
53 clock_t clock = clock_list[i];
54
55 if (clock == CLOCK_PROCESS_CPUTIME_ID ||
56 clock == CLOCK_THREAD_CPUTIME_ID) {
57 if (!have_cputime_timers())
58 continue;
59 }
60
61 TEST(tst_syscall(__NR_timer_create, clock, NULL, &timer));
62 if (TST_RET != 0) {
63 if (possibly_unsupported(clock) &&
64 (TST_ERR == EINVAL || TST_ERR == ENOTSUP)) {
65 tst_res(TCONF | TTERRNO, "%s unsupported",
66 get_clock_str(clock));
67 } else {
68 tst_res(TFAIL | TTERRNO,
69 "timer_create(%s) failed",
70 get_clock_str(clock));
71 }
72 continue;
73 }
74
75 memset(&new_set, 0, sizeof(new_set));
76 memset(&old_set, 0, sizeof(old_set));
77
78 new_set.it_value.tv_sec = tc->it_value_tv_sec;
79 new_set.it_interval.tv_sec = tc->it_interval_tv_sec;
80
81 if (tc->flag & TIMER_ABSTIME) {
82 if (clock_gettime(clock, &timenow) < 0) {
83 tst_res(TFAIL,
84 "clock_gettime(%s) failed - skipping the test",
85 get_clock_str(clock));
86 continue;
87 }
88 new_set.it_value.tv_sec += timenow.tv_sec;
89 }
90
91 TEST(tst_syscall(__NR_timer_settime, timer,
92 tc->flag, &new_set, tc->old_ptr));
93
94 if (TST_RET != 0) {
95 tst_res(TFAIL | TTERRNO, "%s failed",
96 get_clock_str(clock));
97 } else {
98 tst_res(TPASS, "%s was successful",
99 get_clock_str(clock));
100 }
101
102 TEST(tst_syscall(__NR_timer_delete, timer));
103 if (TST_RET != 0)
104 tst_res(TFAIL | TTERRNO, "timer_delete() failed!");
105 }
106 }
107
sighandler(int sig)108 static void sighandler(int sig)
109 {
110 /* sighandler for CLOCK_*_ALARM */
111 tst_res(TINFO, "Caught signal %s", tst_strsig(sig));
112 }
113
setup(void)114 static void setup(void)
115 {
116 SAFE_SIGNAL(SIGALRM, sighandler);
117 }
118
119 static struct tst_test test = {
120 .test = run,
121 .needs_root = 1,
122 .tcnt = ARRAY_SIZE(tcases),
123 .setup = setup,
124 };
125