1 | /* Signal handler and mask set in thread which calls exec. |
2 | Copyright (C) 2003-2022 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 <pthread.h> |
20 | #include <signal.h> |
21 | #include <stdio.h> |
22 | #include <stdlib.h> |
23 | #include <unistd.h> |
24 | #include <support/xsignal.h> |
25 | |
26 | static void * |
27 | tf (void *arg) |
28 | { |
29 | /* Ignore SIGUSR1 and block SIGUSR2. */ |
30 | xsignal (SIGUSR1, SIG_IGN); |
31 | |
32 | sigset_t ss; |
33 | sigemptyset (&ss); |
34 | sigaddset (&ss, SIGUSR2); |
35 | if (pthread_sigmask (SIG_BLOCK, newmask: &ss, NULL) != 0) |
36 | { |
37 | puts (s: "1st run: sigmask failed" ); |
38 | exit (1); |
39 | } |
40 | |
41 | char **oldargv = (char **) arg; |
42 | size_t n = 1; |
43 | while (oldargv[n] != NULL) |
44 | ++n; |
45 | |
46 | char **argv = (char **) alloca ((n + 1) * sizeof (char *)); |
47 | for (n = 0; oldargv[n + 1] != NULL; ++n) |
48 | argv[n] = oldargv[n + 1]; |
49 | argv[n++] = (char *) "--direct" ; |
50 | argv[n] = NULL; |
51 | |
52 | execv (path: argv[0], argv: argv); |
53 | |
54 | puts (s: "execv failed" ); |
55 | |
56 | exit (1); |
57 | } |
58 | |
59 | |
60 | static int |
61 | do_test (int argc, char *argv[]) |
62 | { |
63 | if (argc == 1) |
64 | { |
65 | /* This is the second call. Perform the test. */ |
66 | struct sigaction sa; |
67 | |
68 | if (sigaction (SIGUSR1, NULL, oact: &sa) != 0) |
69 | { |
70 | puts (s: "2nd run: sigaction failed" ); |
71 | return 1; |
72 | } |
73 | if (sa.sa_handler != SIG_IGN) |
74 | { |
75 | puts (s: "SIGUSR1 not ignored" ); |
76 | return 1; |
77 | } |
78 | |
79 | sigset_t ss; |
80 | if (pthread_sigmask (SIG_SETMASK, NULL, oldmask: &ss) != 0) |
81 | { |
82 | puts (s: "2nd run: sigmask failed" ); |
83 | return 1; |
84 | } |
85 | if (! sigismember (&ss, SIGUSR2)) |
86 | { |
87 | puts (s: "SIGUSR2 not blocked" ); |
88 | return 1; |
89 | } |
90 | |
91 | return 0; |
92 | } |
93 | |
94 | pthread_t th; |
95 | if (pthread_create (newthread: &th, NULL, start_routine: tf, arg: argv) != 0) |
96 | { |
97 | puts (s: "create failed" ); |
98 | exit (1); |
99 | } |
100 | |
101 | /* This call should never return. */ |
102 | pthread_join (th: th, NULL); |
103 | |
104 | puts (s: "join returned" ); |
105 | |
106 | return 1; |
107 | } |
108 | |
109 | #define TEST_FUNCTION do_test (argc, argv) |
110 | #include "../test-skeleton.c" |
111 | |