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dfe9aa91 | 1 | /* Wait for process state tests. |
581c785b | 2 | Copyright (C) 2020-2022 Free Software Foundation, Inc. |
dfe9aa91 AZ |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <https://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <stdio.h> | |
20 | #include <sys/wait.h> | |
21 | #include <unistd.h> | |
22 | #include <errno.h> | |
23 | ||
24 | #include <support/test-driver.h> | |
25 | #include <support/process_state.h> | |
26 | #include <support/check.h> | |
27 | #include <support/xsignal.h> | |
28 | #include <support/xunistd.h> | |
29 | ||
30 | #ifndef WEXITED | |
31 | # define WEXITED 0 | |
32 | #endif | |
33 | ||
34 | static void | |
35 | sigusr1_handler (int signo) | |
36 | { | |
37 | } | |
38 | ||
39 | static void | |
40 | test_child (void) | |
41 | { | |
42 | xsignal (SIGUSR1, sigusr1_handler); | |
43 | ||
44 | raise (SIGSTOP); | |
45 | ||
46 | TEST_COMPARE (pause (), -1); | |
47 | TEST_COMPARE (errno, EINTR); | |
48 | ||
49 | while (1) | |
50 | asm (""); | |
51 | } | |
52 | ||
53 | static int | |
54 | do_test (void) | |
55 | { | |
56 | pid_t pid = xfork (); | |
57 | if (pid == 0) | |
58 | { | |
59 | test_child (); | |
60 | _exit (127); | |
61 | } | |
62 | ||
63 | /* Adding process_state_tracing_stop ('t') allows the test to work under | |
64 | trace programs such as ptrace. */ | |
65 | enum support_process_state stop_state = support_process_state_stopped | |
66 | | support_process_state_tracing_stop; | |
67 | ||
68 | if (test_verbose) | |
69 | printf ("info: waiting pid %d, state_stopped/state_tracing_stop\n", | |
70 | (int) pid); | |
71 | support_process_state_wait (pid, stop_state); | |
72 | ||
73 | if (kill (pid, SIGCONT) != 0) | |
74 | FAIL_RET ("kill (%d, SIGCONT): %m\n", pid); | |
75 | ||
76 | if (test_verbose) | |
77 | printf ("info: waiting pid %d, state_sleeping\n", (int) pid); | |
78 | support_process_state_wait (pid, support_process_state_sleeping); | |
79 | ||
80 | if (kill (pid, SIGUSR1) != 0) | |
81 | FAIL_RET ("kill (%d, SIGUSR1): %m\n", pid); | |
82 | ||
83 | if (test_verbose) | |
84 | printf ("info: waiting pid %d, state_running\n", (int) pid); | |
85 | support_process_state_wait (pid, support_process_state_running); | |
86 | ||
87 | if (kill (pid, SIGKILL) != 0) | |
88 | FAIL_RET ("kill (%d, SIGKILL): %m\n", pid); | |
89 | ||
90 | if (test_verbose) | |
91 | printf ("info: waiting pid %d, state_zombie\n", (int) pid); | |
92 | support_process_state_wait (pid, support_process_state_zombie); | |
93 | ||
94 | siginfo_t info; | |
95 | int r = waitid (P_PID, pid, &info, WEXITED); | |
96 | TEST_COMPARE (r, 0); | |
97 | TEST_COMPARE (info.si_signo, SIGCHLD); | |
98 | TEST_COMPARE (info.si_code, CLD_KILLED); | |
99 | TEST_COMPARE (info.si_status, SIGKILL); | |
100 | TEST_COMPARE (info.si_pid, pid); | |
101 | ||
102 | return 0; | |
103 | } | |
104 | ||
105 | #include <support/test-driver.c> |