1 | /* Test for completion signal handling. |
2 | Copyright (C) 2000-2022 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 <aio.h> |
20 | #include <signal.h> |
21 | #include <stdio.h> |
22 | #include <stdlib.h> |
23 | #include <unistd.h> |
24 | #include <errno.h> |
25 | |
26 | int my_signo; |
27 | |
28 | volatile sig_atomic_t flag; |
29 | |
30 | |
31 | static void |
32 | sighandler (const int signo) |
33 | { |
34 | flag = signo; |
35 | } |
36 | |
37 | static int |
38 | wait_flag (void) |
39 | { |
40 | while (flag == 0) |
41 | { |
42 | puts (s: "Sleeping..." ); |
43 | sleep (seconds: 1); |
44 | } |
45 | |
46 | if (flag != my_signo) |
47 | { |
48 | printf (format: "signal handler received wrong signal, flag is %d\n" , flag); |
49 | return 1; |
50 | } |
51 | |
52 | return 0; |
53 | } |
54 | |
55 | #ifndef SIGRTMIN |
56 | # define SIGRTMIN -1 |
57 | # define SIGRTMAX -1 |
58 | #endif |
59 | |
60 | static int |
61 | do_test (int argc, char *argv[]) |
62 | { |
63 | char name[] = "/tmp/aio4.XXXXXX" ; |
64 | int fd; |
65 | struct aiocb *arr[1]; |
66 | struct aiocb cb; |
67 | static const char buf[] = "Hello World\n" ; |
68 | struct aioinit init = {10, 20, 0}; |
69 | struct sigaction sa; |
70 | struct sigevent ev; |
71 | |
72 | if (SIGRTMIN == -1) |
73 | { |
74 | printf (format: "RT signals not supported.\n" ); |
75 | return 0; |
76 | } |
77 | |
78 | /* Select a signal from the middle of the available choices... */ |
79 | my_signo = (SIGRTMAX + SIGRTMIN) / 2; |
80 | |
81 | fd = mkstemp (template: name); |
82 | if (fd == -1) |
83 | { |
84 | printf (format: "cannot open temp name: %m\n" ); |
85 | return 1; |
86 | } |
87 | |
88 | unlink (name: name); |
89 | |
90 | /* Test also aio_init. */ |
91 | aio_init (init: &init); |
92 | |
93 | arr[0] = &cb; |
94 | |
95 | cb.aio_fildes = fd; |
96 | cb.aio_lio_opcode = LIO_WRITE; |
97 | cb.aio_reqprio = 0; |
98 | cb.aio_buf = (void *) buf; |
99 | cb.aio_nbytes = sizeof (buf) - 1; |
100 | cb.aio_offset = 0; |
101 | cb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
102 | cb.aio_sigevent.sigev_notify_function = NULL; |
103 | cb.aio_sigevent.sigev_notify_attributes = NULL; |
104 | cb.aio_sigevent.sigev_signo = my_signo; |
105 | cb.aio_sigevent.sigev_value.sival_ptr = NULL; |
106 | |
107 | ev.sigev_notify = SIGEV_SIGNAL; |
108 | ev.sigev_notify_function = NULL; |
109 | ev.sigev_notify_attributes = NULL; |
110 | ev.sigev_signo = my_signo; |
111 | |
112 | sa.sa_handler = sighandler; |
113 | sigemptyset (&sa.sa_mask); |
114 | sa.sa_flags = SA_RESTART; |
115 | |
116 | if (sigaction (sig: my_signo, act: &sa, NULL) < 0) |
117 | { |
118 | printf (format: "sigaction failed: %m\n" ); |
119 | return 1; |
120 | } |
121 | |
122 | flag = 0; |
123 | /* First use aio_write. */ |
124 | if (aio_write (aiocbp: arr[0]) < 0) |
125 | { |
126 | if (errno == ENOSYS) |
127 | { |
128 | puts (s: "no aio support in this configuration" ); |
129 | return 0; |
130 | } |
131 | printf (format: "aio_write failed: %m\n" ); |
132 | return 1; |
133 | } |
134 | |
135 | if (wait_flag ()) |
136 | return 1; |
137 | |
138 | puts (s: "aio_write OK" ); |
139 | |
140 | flag = 0; |
141 | /* Again with lio_listio. */ |
142 | if (lio_listio (LIO_NOWAIT, list: arr, nent: 1, sig: &ev) < 0) |
143 | { |
144 | printf (format: "lio_listio failed: %m\n" ); |
145 | return 1; |
146 | } |
147 | |
148 | if (wait_flag ()) |
149 | return 1; |
150 | |
151 | puts (s: "all OK" ); |
152 | |
153 | return 0; |
154 | } |
155 | |
156 | #include "../test-skeleton.c" |
157 | |