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84d40d70 | 1 | /* Verify that the parent pid is unchanged by __clone_internal. |
581c785b | 2 | Copyright (C) 2021-2022 Free Software Foundation, Inc. |
84d40d70 L |
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 <sched.h> | |
20 | #include <signal.h> | |
21 | #include <string.h> | |
22 | #include <stdio.h> | |
23 | #include <unistd.h> | |
24 | #include <sys/types.h> | |
25 | #include <sys/wait.h> | |
26 | #include <clone_internal.h> | |
27 | #include <support/xunistd.h> | |
28 | ||
29 | #ifndef TEST_CLONE_FLAGS | |
30 | #define TEST_CLONE_FLAGS 0 | |
31 | #endif | |
32 | ||
33 | static int sig; | |
34 | ||
35 | static int | |
36 | f (void *a) | |
37 | { | |
38 | puts ("in f"); | |
39 | union sigval sival; | |
40 | sival.sival_int = getpid (); | |
41 | printf ("pid = %d\n", sival.sival_int); | |
42 | if (sigqueue (getppid (), sig, sival) != 0) | |
43 | return 1; | |
44 | return 0; | |
45 | } | |
46 | ||
47 | ||
48 | static int | |
49 | do_test (void) | |
50 | { | |
51 | int mypid = getpid (); | |
52 | ||
53 | sig = SIGRTMIN; | |
54 | sigset_t ss; | |
55 | sigemptyset (&ss); | |
56 | sigaddset (&ss, sig); | |
57 | if (sigprocmask (SIG_BLOCK, &ss, NULL) != 0) | |
58 | { | |
59 | printf ("sigprocmask failed: %m\n"); | |
60 | return 1; | |
61 | } | |
62 | ||
63 | #ifdef __ia64__ | |
64 | # define STACK_SIZE 256 * 1024 | |
65 | #else | |
66 | # define STACK_SIZE 128 * 1024 | |
67 | #endif | |
68 | char st[STACK_SIZE] __attribute__ ((aligned)); | |
69 | struct clone_args clone_args = | |
70 | { | |
71 | .flags = TEST_CLONE_FLAGS & ~CSIGNAL, | |
72 | .exit_signal = TEST_CLONE_FLAGS & CSIGNAL, | |
73 | .stack = (uintptr_t) st, | |
74 | .stack_size = sizeof (st), | |
75 | }; | |
76 | pid_t p = __clone_internal (&clone_args, f, 0); | |
77 | if (p == -1) | |
78 | { | |
79 | printf("clone failed: %m\n"); | |
80 | return 1; | |
81 | } | |
82 | printf ("new thread: %d\n", (int) p); | |
83 | ||
84 | siginfo_t si; | |
85 | do | |
86 | if (sigwaitinfo (&ss, &si) < 0) | |
87 | { | |
88 | printf("sigwaitinfo failed: %m\n"); | |
89 | kill (p, SIGKILL); | |
90 | return 1; | |
91 | } | |
92 | while (si.si_signo != sig || si.si_code != SI_QUEUE); | |
93 | ||
94 | int e; | |
95 | xwaitpid (p, &e, __WCLONE); | |
96 | if (!WIFEXITED (e)) | |
97 | { | |
98 | if (WIFSIGNALED (e)) | |
99 | printf ("died from signal %s\n", strsignal (WTERMSIG (e))); | |
100 | else | |
101 | puts ("did not terminate correctly"); | |
102 | return 1; | |
103 | } | |
104 | if (WEXITSTATUS (e) != 0) | |
105 | { | |
106 | printf ("exit code %d\n", WEXITSTATUS (e)); | |
107 | return 1; | |
108 | } | |
109 | ||
110 | if (si.si_int != (int) p) | |
111 | { | |
112 | printf ("expected PID %d, got si_int %d\n", (int) p, si.si_int); | |
113 | kill (p, SIGKILL); | |
114 | return 1; | |
115 | } | |
116 | ||
117 | if (si.si_pid != p) | |
118 | { | |
119 | printf ("expected PID %d, got si_pid %d\n", (int) p, (int) si.si_pid); | |
120 | kill (p, SIGKILL); | |
121 | return 1; | |
122 | } | |
123 | ||
124 | if (getpid () != mypid) | |
125 | { | |
126 | puts ("my PID changed"); | |
127 | return 1; | |
128 | } | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
133 | #include <support/test-driver.c> |