1 | /* Wait for process state tests. |
2 | Copyright (C) 2020-2024 Free Software Foundation, Inc. |
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, handler: 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 (status: 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 (format: "info: waiting pid %d, state_stopped/state_tracing_stop\n" , |
70 | (int) pid); |
71 | support_process_state_wait (pid, state: stop_state); |
72 | |
73 | if (kill (pid: pid, SIGCONT) != 0) |
74 | FAIL_RET ("kill (%d, SIGCONT): %m\n" , pid); |
75 | |
76 | if (test_verbose) |
77 | printf (format: "info: waiting pid %d, state_sleeping\n" , (int) pid); |
78 | support_process_state_wait (pid, state: support_process_state_sleeping); |
79 | |
80 | if (kill (pid: pid, SIGUSR1) != 0) |
81 | FAIL_RET ("kill (%d, SIGUSR1): %m\n" , pid); |
82 | |
83 | if (test_verbose) |
84 | printf (format: "info: waiting pid %d, state_running\n" , (int) pid); |
85 | support_process_state_wait (pid, state: support_process_state_running); |
86 | |
87 | if (kill (pid: pid, SIGKILL) != 0) |
88 | FAIL_RET ("kill (%d, SIGKILL): %m\n" , pid); |
89 | |
90 | if (test_verbose) |
91 | printf (format: "info: waiting pid %d, state_zombie\n" , (int) pid); |
92 | support_process_state_wait (pid, state: support_process_state_zombie); |
93 | |
94 | siginfo_t info; |
95 | int r = waitid (idtype: P_PID, id: pid, infop: &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> |
106 | |