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authorrwatson <rwatson@FreeBSD.org>2005-03-11 12:47:14 +0000
committerrwatson <rwatson@FreeBSD.org>2005-03-11 12:47:14 +0000
commit832b048264b11fed77402209394434bfab16f7e7 (patch)
tree835697f76bf91bad65e3b9050071c4304292bd0f /tools
parent7014c90c7dca3573722b559c70e9431a98a7cd0e (diff)
downloadFreeBSD-src-832b048264b11fed77402209394434bfab16f7e7.zip
FreeBSD-src-832b048264b11fed77402209394434bfab16f7e7.tar.gz
Add sigpipe, a simple UNIX domain socket and TCP regression test that is
intended to verify that SIGPIPE is delivered to a process writing or sending on a socket that has been shut down for write. If available, SO_NOSIGPIPE is also tested. This regression test is currently passed by RELENG_4, but not by HEAD or RELENG_5, due to a bug in the write() code for sockets. SO_NOSIGPIPE is not present in RELENG_4, however, so is not tested there. Reported by: Mikko Tyolajarvi <mbsd at pacbell dot net> PR: 78478
Diffstat (limited to 'tools')
-rw-r--r--tools/regression/sockets/sigpipe/Makefile9
-rw-r--r--tools/regression/sockets/sigpipe/sigpipe.c318
2 files changed, 327 insertions, 0 deletions
diff --git a/tools/regression/sockets/sigpipe/Makefile b/tools/regression/sockets/sigpipe/Makefile
new file mode 100644
index 0000000..aa301b6
--- /dev/null
+++ b/tools/regression/sockets/sigpipe/Makefile
@@ -0,0 +1,9 @@
+#
+# $FreeBSD$
+#
+
+PROG= sigpipe
+NO_MAN=
+WARNS?= 2
+
+.include <bsd.prog.mk>
diff --git a/tools/regression/sockets/sigpipe/sigpipe.c b/tools/regression/sockets/sigpipe/sigpipe.c
new file mode 100644
index 0000000..5b46d4f
--- /dev/null
+++ b/tools/regression/sockets/sigpipe/sigpipe.c
@@ -0,0 +1,318 @@
+/*-
+ * Copyright (c) 2005 Robert N. M. Watson
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <netinet/in.h>
+
+#include <err.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/*
+ * This regression test is intended to verify whether or not SIGPIPE is
+ * properly generated in several simple test cases, as well as testing
+ * whether SO_NOSIGPIPE disables SIGPIPE, if available on the system.
+ * SIGPIPE is generated if a write or send is attempted on a socket that has
+ * been shutdown for write. This test runs several test cases with UNIX
+ * domain sockets and TCP sockets to confirm that either EPIPE or SIGPIPE is
+ * properly returned.
+ *
+ * For the purposes of testing TCP, an unused port number must be specified.
+ */
+static void
+usage(void)
+{
+
+ errx(-1, "usage: sigpipe tcpport");
+}
+
+/*
+ * Signal catcher. Set a global flag that can be tested by the caller.
+ */
+static int signaled;
+static int
+got_signal(void)
+{
+
+ return (signaled);
+}
+
+static void
+signal_handler(int signum)
+{
+
+ signaled = 1;
+}
+
+static void
+signal_setup(const char *testname)
+{
+
+ signaled = 0;
+ if (signal(SIGPIPE, signal_handler) == SIG_ERR)
+ err(-1, "%s: signal(SIGPIPE)", testname);
+}
+
+static void
+test_send(const char *testname, int sock)
+{
+ ssize_t len;
+ char ch;
+
+ ch = 0;
+ len = send(sock, &ch, sizeof(ch), 0);
+ if (len < 0) {
+ if (errno == EPIPE)
+ return;
+ err(-1, "%s: send", testname);
+ }
+ errx(-1, "%s: send: returned %d", testname, len);
+}
+
+static void
+test_write(const char *testname, int sock)
+{
+ ssize_t len;
+ char ch;
+
+ ch = 0;
+ len = write(sock, &ch, sizeof(ch));
+ if (len < 0) {
+ if (errno == EPIPE)
+ return;
+ err(-1, "%s: write", testname);
+ }
+ errx(-1, "%s: write: returned %d", testname, len);
+}
+
+static void
+test_send_wantsignal(const char *testname, int sock1, int sock2)
+{
+
+ shutdown(sock2, SHUT_WR);
+ signal_setup(testname);
+ test_send(testname, sock2);
+ if (!got_signal())
+ errx(-1, "%s: send: didn't receive SIGPIPE", testname);
+ close(sock1);
+ close(sock2);
+}
+
+#ifdef SO_NOSIGPIPE
+static void
+test_send_dontsignal(const char *testname, int sock1, int sock2)
+{
+ int i;
+
+ i = 1;
+ if (setsockopt(sock2, SOL_SOCKET, SO_NOSIGPIPE, &i, sizeof(i)) < 0)
+ err(-1, "%s: setsockopt(SOL_SOCKET, SO_NOSIGPIPE)", testname);
+ shutdown(sock2, SHUT_WR);
+ signal_setup(testname);
+ test_send(testname, sock2);
+ if (got_signal())
+ errx(-1, "%s: send: got SIGPIPE", testname);
+ close(sock1);
+ close(sock2);
+}
+#endif
+
+static void
+test_write_wantsignal(const char *testname, int sock1, int sock2)
+{
+
+ shutdown(sock2, SHUT_WR);
+ signal_setup(testname);
+ test_write(testname, sock2);
+ if (!got_signal())
+ errx(-1, "%s: write: didn't receive SIGPIPE", testname);
+ close(sock1);
+ close(sock2);
+}
+
+#ifdef SO_NOSIGPIPE
+static void
+test_write_dontsignal(const char *testname, int sock1, int sock2)
+{
+ int i;
+
+ i = 1;
+ if (setsockopt(sock2, SOL_SOCKET, SO_NOSIGPIPE, &i, sizeof(i)) < 0)
+ err(-1, "%s: setsockopt(SOL_SOCKET, SO_NOSIGPIPE)", testname);
+ shutdown(sock2, SHUT_WR);
+ signal_setup(testname);
+ test_write(testname, sock2);
+ if (got_signal())
+ errx(-1, "%s: write: got SIGPIPE", testname);
+ close(sock1);
+ close(sock2);
+}
+#endif
+
+static int listen_sock;
+static void
+tcp_setup(u_short port)
+{
+ struct sockaddr_in sin;
+
+ listen_sock = socket(PF_INET, SOCK_STREAM, 0);
+ if (listen_sock < 0)
+ err(-1, "tcp_setup: listen");
+
+ bzero(&sin, sizeof(sin));
+ sin.sin_len = sizeof(sin);
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ sin.sin_port = htons(port);
+
+ if (bind(listen_sock, (struct sockaddr *)&sin, sizeof(sin)) < 0)
+ err(-1, "tcp_setup: bind");
+
+ if (listen(listen_sock, -1) < 0)
+ err(-1, "tcp_setup: listen");
+}
+
+static void
+tcp_teardown(void)
+{
+
+ close(listen_sock);
+}
+
+static void
+tcp_pair(u_short port, int sock[2])
+{
+ int accept_sock, connect_sock;
+ struct sockaddr_in sin;
+ socklen_t len;
+
+ connect_sock = socket(PF_INET, SOCK_STREAM, 0);
+ if (connect_sock < 0)
+ err(-1, "tcp_pair: socket");
+
+ bzero(&sin, sizeof(sin));
+ sin.sin_len = sizeof(sin);
+ sin.sin_family = AF_INET;
+ sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ sin.sin_port = htons(port);
+
+ if (connect(connect_sock, (struct sockaddr *)&sin, sizeof(sin)) < 0)
+ err(-1, "tcp_pair: connect");
+
+ sleep(1); /* Time for TCP to settle. */
+
+ len = sizeof(sin);
+ accept_sock = accept(listen_sock, (struct sockaddr *)&sin, &len);
+ if (accept_sock < 0)
+ err(-1, "tcp_pair: accept");
+
+ sleep(1); /* Time for TCP to settle. */
+
+ sock[0] = accept_sock;
+ sock[1] = connect_sock;
+}
+
+int
+main(int argc, char *argv[])
+{
+ char *dummy;
+ int sock[2];
+ long port;
+
+ if (argc != 2)
+ usage();
+
+ port = strtol(argv[1], &dummy, 10);
+ if (port < 0 || port > 65535 || *dummy != '\0')
+ usage();
+
+#ifndef SO_NOSIGPIPE
+ warnx("sigpipe: SO_NOSIGPIPE not defined, skipping some tests");
+#endif
+
+ /*
+ * UNIX domain socketpair().
+ */
+ if (socketpair(PF_LOCAL, SOCK_STREAM, 0, sock) < 0)
+ err(-1, "socketpair(PF_LOCAL, SOCK_STREAM)");
+ test_send_wantsignal("test_send_wantsignal(PF_LOCAL)", sock[0],
+ sock[1]);
+
+#ifdef SO_NOSIGPIPE
+ if (socketpair(PF_LOCAL, SOCK_STREAM, 0, sock) < 0)
+ err(-1, "socketpair(PF_LOCAL, SOCK_STREAM)");
+ test_send_dontsignal("test_send_dontsignal(PF_LOCAL)", sock[0],
+ sock[1]);
+#endif
+
+ if (socketpair(PF_LOCAL, SOCK_STREAM, 0, sock) < 0)
+ err(-1, "socketpair(PF_LOCAL, SOCK_STREAM)");
+ test_write_wantsignal("test_write_wantsignal(PF_LOCAL)", sock[0],
+ sock[1]);
+
+#ifdef SO_NOSIGPIPE
+ if (socketpair(PF_LOCAL, SOCK_STREAM, 0, sock) < 0)
+ err(-1, "socketpair(PF_LOCAL, SOCK_STREAM)");
+ test_write_dontsignal("test_write_dontsignal(PF_LOCAL)", sock[0],
+ sock[1]);
+#endif
+
+ /*
+ * TCP.
+ */
+ tcp_setup(port);
+ tcp_pair(port, sock);
+ test_send_wantsignal("test_send_wantsignal(PF_INET)", sock[0],
+ sock[1]);
+
+#ifdef SO_NOSIGPIPE
+ tcp_pair(port, sock);
+ test_send_dontsignal("test_send_dontsignal(PF_INET)", sock[0],
+ sock[1]);
+#endif
+
+ tcp_pair(port, sock);
+ test_write_wantsignal("test_write_wantsignal(PF_INET)", sock[0],
+ sock[1]);
+
+#ifdef SO_NOSIGPIPE
+ tcp_pair(port, sock);
+ test_write_dontsignal("test_write_dontsignal(PF_INET)", sock[0],
+ sock[1]);
+#endif
+ tcp_teardown();
+
+ fprintf(stderr, "PASS\n");
+ return (0);
+}
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