tests: add another case to pselect6 test

* tests/pselect6.c: Include <sys/time.h>.
(handler): New function.
(main): Install an interval timer.
Use it to check how ERESTARTNOHAND is printed.

1 files changed, 47 insertions, 0 deletions

diff --git a/tests/pselect6.c b/tests/pselect6.c
index 445d93373..55b9e031e 100644
--- a/tests/pselect6.c
+++ b/tests/pselect6.c
@@ -1,4 +1,31 @@
 /*
+ * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
  * Based on test by Dr. David Alan Gilbert <dave@treblig.org>
  */
 #include <assert.h>
@@ -7,6 +34,7 @@
 #include <signal.h>
 #include <unistd.h>
 #include <sys/select.h>
+#include <sys/time.h>
 
 #ifndef NSIG
 # warning NSIG is not defined, using 32
@@ -15,11 +43,18 @@
 
 static fd_set set[3][0x1000000 / sizeof(fd_set)];
 
+static void
+handler(int signo)
+{
+}
+
 int main(int ac, char **av)
 {
 	int fds[2];
 	struct timespec timeout = { .tv_sec = 0, .tv_nsec = 100 };
 	sigset_t mask;
+	const struct sigaction act = { .sa_handler = handler };
+	const struct itimerval itv = { .it_value.tv_usec = 111111 };
 
 	sigemptyset(&mask);
 	sigaddset(&mask, SIGHUP);
@@ -63,6 +98,18 @@ int main(int ac, char **av)
 	printf("pselect6(%d, [%d], [], NULL, {0, 100}, {[HUP CHLD], %u}) "
 	       "= 0 (Timeout)\n", FD_SETSIZE + 1, fds[0], NSIG / 8);
 
+	/*
+	 * See how timeouts are decoded.
+	 */
+	assert(sigaction(SIGALRM, &act, NULL) == 0);
+	assert(setitimer(ITIMER_REAL, &itv, NULL) == 0);
+
+	timeout.tv_nsec = 222222222;
+	assert(pselect(0, NULL, NULL, NULL, &timeout, &mask) == -1);
+	puts("pselect6(0, NULL, NULL, NULL, {0, 222222222}, {[HUP CHLD], 8})"
+	     " = ? ERESTARTNOHAND (To be restarted if no handler)");
+	puts("--- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---");
+
 	puts("+++ exited with 0 +++");
 	return 0;
 }