From: Dmitry V. Levin <ldv@altlinux.org>
Date: Fri, 18 Nov 2016 00:28:29 +0000 (+0000)
Subject: tests: check decoding of ERESTARTSYS error code
X-Git-Tag: v4.15~120
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f860e8c3e0bf6ea4e2b0f19cfe732cd5b528391a;p=strace

tests: check decoding of ERESTARTSYS error code

* tests/erestartsys.c: New file.
* tests/erestartsys.test: New test.
* tests/.gitignore: Add erestartsys.
* tests/Makefile.am (check_PROGRAMS): Likewise.
(DECODER_TESTS): Add erestartsys.test.
---

diff --git a/tests/.gitignore b/tests/.gitignore
index 027bdc4b..e47698b6 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -41,6 +41,7 @@ epoll_create1
 epoll_ctl
 epoll_pwait
 epoll_wait
+erestartsys
 eventfd
 execve
 execve-v
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 05844541..eb72739b 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -101,6 +101,7 @@ check_PROGRAMS = \
 	epoll_ctl \
 	epoll_pwait \
 	epoll_wait \
+	erestartsys \
 	eventfd \
 	execve \
 	execve-v \
@@ -482,6 +483,7 @@ DECODER_TESTS = \
 	epoll_ctl.test \
 	epoll_pwait.test \
 	epoll_wait.test \
+	erestartsys.test \
 	eventfd.test \
 	execve-v.test \
 	execve.test \
diff --git a/tests/erestartsys.c b/tests/erestartsys.c
new file mode 100644
index 00000000..97c9699c
--- /dev/null
+++ b/tests/erestartsys.c
@@ -0,0 +1,81 @@
+/*
+ * Check decoding of ERESTARTSYS error code.
+ *
+ * Copyright (c) 2016 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.
+ */
+
+#include "tests.h"
+
+#include <signal.h>
+#include <stdio.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+static int sv[2];
+
+static void
+handler(int sig)
+{
+	close(sv[1]);
+	sv[1] = -1;
+}
+
+int
+main(void)
+{
+	if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
+		perror_msg_and_skip("socketpair");
+
+	const struct sigaction act = {
+		.sa_handler = handler,
+		.sa_flags = SA_RESTART
+	};
+	if (sigaction(SIGALRM, &act, NULL))
+		perror_msg_and_fail("sigaction");
+
+	sigset_t mask;
+	sigemptyset(&mask);
+	sigaddset(&mask, SIGALRM);
+	if (sigprocmask(SIG_UNBLOCK, &mask, NULL))
+		perror_msg_and_fail("sigprocmask");
+
+	const struct itimerval itv = { .it_value.tv_usec = 123456 };
+	if (setitimer(ITIMER_REAL, &itv, NULL))
+		perror_msg_and_fail("setitimer");
+
+	if (recvfrom(sv[0], &sv[1], sizeof(sv[1]), 0, NULL, NULL))
+		perror_msg_and_fail("recvfrom");
+
+	printf("recvfrom(%d, %p, %d, 0, NULL, NULL) = ? ERESTARTSYS"
+	       " (To be restarted if SA_RESTART is set)\n",
+	       sv[0], &sv[1], (int) sizeof(sv[1]));
+	printf("recvfrom(%d, \"\", %d, 0, NULL, NULL) = 0\n",
+	       sv[0], (int) sizeof(sv[1]));
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}
diff --git a/tests/erestartsys.test b/tests/erestartsys.test
new file mode 100755
index 00000000..91f711f3
--- /dev/null
+++ b/tests/erestartsys.test
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Check decoding of ERESTARTSYS error code.
+. "${srcdir=.}/init.sh"
+
+run_strace_match_diff -a34 -e signal=none -e trace=recvfrom