1 /*
2 * Copyright (c) 2019 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 #include <darwintest.h>
30 #include <darwintest_multiprocess.h>
31 #include <stdio.h>
32 #include <unistd.h>
33 #include <sys/wait.h>
34 #include <pthread.h>
35 #include <stdlib.h>
36 #include <signal.h>
37
38 static void
signal_handler(int sig,siginfo_t * sip __unused,void * ucontext __unused)39 signal_handler(int sig, siginfo_t *sip __unused, void *ucontext __unused)
40 {
41 if (sig == SIGPIPE) {
42 T_FAIL("Received SIGPIPE");
43 }
44
45 exit(141);
46 }
47
48 static void *
thread_read(void * arg)49 thread_read(void *arg)
50 {
51 int fd = (int) (uintptr_t)arg;
52 char buf[10];
53
54 read(fd, buf, 10);
55 T_LOG("thread returned from read");
56 return 0;
57 }
58
59 T_DECL(pipe_drain,
60 "test a pipe with multiple read descriptor could close one descriptor and drain that descriptor")
61 {
62 int pipe_fd[2];
63 int dup_fd;
64 int ret;
65 char buf[10] = "Hello";
66 pthread_t thread;
67
68 /* Install the signal handler for SIGPIPE */
69
70 struct sigaction sa = {
71 .sa_sigaction = signal_handler,
72 .sa_flags = SA_SIGINFO
73 };
74 sigfillset(&sa.sa_mask);
75
76 T_QUIET; T_ASSERT_POSIX_ZERO(sigaction(SIGPIPE, &sa, NULL), NULL);
77
78 ret = pipe(pipe_fd);
79 T_EXPECT_EQ(ret, 0, NULL);
80
81 dup_fd = dup(pipe_fd[0]);
82 T_EXPECT_GE(dup_fd, 0, NULL);
83
84 pthread_create(&thread, NULL, thread_read, (void *) (uintptr_t) pipe_fd[0]);
85
86 sleep(5);
87
88 close(pipe_fd[0]);
89 ret = (int)write(pipe_fd[1], buf, strlen(buf) + 1);
90 T_EXPECT_EQ(ret, (int)strlen(buf) + 1, NULL);
91 }
92