1*4d495c6eSApple OSS Distributions /*
2*4d495c6eSApple OSS Distributions * Copyright (c) 2019 Apple Computer, Inc. All rights reserved.
3*4d495c6eSApple OSS Distributions *
4*4d495c6eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*4d495c6eSApple OSS Distributions *
6*4d495c6eSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*4d495c6eSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*4d495c6eSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*4d495c6eSApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*4d495c6eSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*4d495c6eSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*4d495c6eSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*4d495c6eSApple OSS Distributions * terms of an Apple operating system software license agreement.
14*4d495c6eSApple OSS Distributions *
15*4d495c6eSApple OSS Distributions * Please obtain a copy of the License at
16*4d495c6eSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*4d495c6eSApple OSS Distributions *
18*4d495c6eSApple OSS Distributions * The Original Code and all software distributed under the License are
19*4d495c6eSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*4d495c6eSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*4d495c6eSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*4d495c6eSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*4d495c6eSApple OSS Distributions * Please see the License for the specific language governing rights and
24*4d495c6eSApple OSS Distributions * limitations under the License.
25*4d495c6eSApple OSS Distributions *
26*4d495c6eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*4d495c6eSApple OSS Distributions */
28*4d495c6eSApple OSS Distributions
29*4d495c6eSApple OSS Distributions #include <darwintest.h>
30*4d495c6eSApple OSS Distributions #include <darwintest_multiprocess.h>
31*4d495c6eSApple OSS Distributions #include <stdio.h>
32*4d495c6eSApple OSS Distributions #include <unistd.h>
33*4d495c6eSApple OSS Distributions #include <sys/wait.h>
34*4d495c6eSApple OSS Distributions #include <pthread.h>
35*4d495c6eSApple OSS Distributions #include <stdlib.h>
36*4d495c6eSApple OSS Distributions #include <signal.h>
37*4d495c6eSApple OSS Distributions
38*4d495c6eSApple OSS Distributions static void
signal_handler(int sig,siginfo_t * sip __unused,void * ucontext __unused)39*4d495c6eSApple OSS Distributions signal_handler(int sig, siginfo_t *sip __unused, void *ucontext __unused)
40*4d495c6eSApple OSS Distributions {
41*4d495c6eSApple OSS Distributions if (sig == SIGPIPE) {
42*4d495c6eSApple OSS Distributions T_FAIL("Received SIGPIPE");
43*4d495c6eSApple OSS Distributions }
44*4d495c6eSApple OSS Distributions
45*4d495c6eSApple OSS Distributions exit(141);
46*4d495c6eSApple OSS Distributions }
47*4d495c6eSApple OSS Distributions
48*4d495c6eSApple OSS Distributions static void *
thread_read(void * arg)49*4d495c6eSApple OSS Distributions thread_read(void *arg)
50*4d495c6eSApple OSS Distributions {
51*4d495c6eSApple OSS Distributions int fd = (int) (uintptr_t)arg;
52*4d495c6eSApple OSS Distributions char buf[10];
53*4d495c6eSApple OSS Distributions
54*4d495c6eSApple OSS Distributions read(fd, buf, 10);
55*4d495c6eSApple OSS Distributions T_LOG("thread returned from read");
56*4d495c6eSApple OSS Distributions return 0;
57*4d495c6eSApple OSS Distributions }
58*4d495c6eSApple OSS Distributions
59*4d495c6eSApple OSS Distributions T_DECL(pipe_drain,
60*4d495c6eSApple OSS Distributions "test a pipe with multiple read descriptor could close one descriptor and drain that descriptor")
61*4d495c6eSApple OSS Distributions {
62*4d495c6eSApple OSS Distributions int pipe_fd[2];
63*4d495c6eSApple OSS Distributions int dup_fd;
64*4d495c6eSApple OSS Distributions int ret;
65*4d495c6eSApple OSS Distributions char buf[10] = "Hello";
66*4d495c6eSApple OSS Distributions pthread_t thread;
67*4d495c6eSApple OSS Distributions
68*4d495c6eSApple OSS Distributions /* Install the signal handler for SIGPIPE */
69*4d495c6eSApple OSS Distributions
70*4d495c6eSApple OSS Distributions struct sigaction sa = {
71*4d495c6eSApple OSS Distributions .sa_sigaction = signal_handler,
72*4d495c6eSApple OSS Distributions .sa_flags = SA_SIGINFO
73*4d495c6eSApple OSS Distributions };
74*4d495c6eSApple OSS Distributions sigfillset(&sa.sa_mask);
75*4d495c6eSApple OSS Distributions
76*4d495c6eSApple OSS Distributions T_QUIET; T_ASSERT_POSIX_ZERO(sigaction(SIGPIPE, &sa, NULL), NULL);
77*4d495c6eSApple OSS Distributions
78*4d495c6eSApple OSS Distributions ret = pipe(pipe_fd);
79*4d495c6eSApple OSS Distributions T_EXPECT_EQ(ret, 0, NULL);
80*4d495c6eSApple OSS Distributions
81*4d495c6eSApple OSS Distributions dup_fd = dup(pipe_fd[0]);
82*4d495c6eSApple OSS Distributions T_EXPECT_GE(dup_fd, 0, NULL);
83*4d495c6eSApple OSS Distributions
84*4d495c6eSApple OSS Distributions pthread_create(&thread, NULL, thread_read, (void *) (uintptr_t) pipe_fd[0]);
85*4d495c6eSApple OSS Distributions
86*4d495c6eSApple OSS Distributions sleep(5);
87*4d495c6eSApple OSS Distributions
88*4d495c6eSApple OSS Distributions close(pipe_fd[0]);
89*4d495c6eSApple OSS Distributions ret = (int)write(pipe_fd[1], buf, strlen(buf) + 1);
90*4d495c6eSApple OSS Distributions T_EXPECT_EQ(ret, (int)strlen(buf) + 1, NULL);
91*4d495c6eSApple OSS Distributions }
92