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      1 /*
      2  * Copyright (c) 2015 Dmitry V. Levin <ldv (at) altlinux.org>
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. The name of the author may not be used to endorse or promote products
     14  *    derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #ifdef HAVE_CONFIG_H
     29 # include "config.h"
     30 #endif
     31 
     32 #include <poll.h>
     33 #include <signal.h>
     34 #include <unistd.h>
     35 
     36 static int
     37 test1(void)
     38 {
     39 	sigset_t mask;
     40 	const struct timespec timeout = { .tv_sec = 42, .tv_nsec = 999999999 };
     41 	struct pollfd fds[] = {
     42 		{ .fd = 0, .events = POLLIN | POLLPRI | POLLRDNORM | POLLRDBAND },
     43 		{ .fd = 1, .events = POLLOUT | POLLWRNORM | POLLWRBAND },
     44 		{ .fd = 3, .events = POLLIN | POLLPRI },
     45 		{ .fd = 4, .events = POLLOUT }
     46 	};
     47 
     48 	sigemptyset(&mask);
     49 	sigaddset(&mask, SIGUSR2);
     50 	sigaddset(&mask, SIGCHLD);
     51 
     52 	return ppoll(fds, sizeof(fds) / sizeof(*fds), &timeout, &mask) == 2 ? 0 : 77;
     53 }
     54 
     55 static int
     56 test2(void)
     57 {
     58 	sigset_t mask;
     59 	const struct timespec timeout = { .tv_sec = 0, .tv_nsec = 999 };
     60 	struct pollfd fds[] = {
     61 		{ .fd = 1, .events = POLLIN | POLLPRI | POLLRDNORM | POLLRDBAND },
     62 		{ .fd = 0, .events = POLLOUT | POLLWRNORM | POLLWRBAND }
     63 	};
     64 
     65 	sigfillset(&mask);
     66 	sigdelset(&mask, SIGHUP);
     67 	sigdelset(&mask, SIGKILL);
     68 	sigdelset(&mask, SIGSTOP);
     69 
     70 	return ppoll(fds, sizeof(fds) / sizeof(*fds), &timeout, &mask) == 0 ? 0 : 77;
     71 }
     72 
     73 int
     74 main(void)
     75 {
     76 	int rc;
     77 	int fds[2];
     78 
     79 	(void) close(0);
     80 	(void) close(1);
     81 	(void) close(3);
     82 	(void) close(4);
     83 	if (pipe(fds) || pipe(fds))
     84 		return 77;
     85 
     86 
     87 	if ((rc = test1()))
     88 		return rc;
     89 
     90 	if ((rc = test2()))
     91 		return rc;
     92 
     93 	return ppoll(NULL, 42, NULL, NULL) < 0 ? 0 : 77;
     94 }
     95