copy from netbsd...

3 files changed, 316 insertions, 0 deletions

diff --git a/regress/sys/kern/unfdpass/Makefile b/regress/sys/kern/unfdpass/Makefile
new file mode 100644
index 00000000000..2f4651ff3f3
--- /dev/null
+++ b/regress/sys/kern/unfdpass/Makefile
@@ -0,0 +1,16 @@
+#	$NetBSD: Makefile,v 1.3 1998/03/02 21:57:38 cgd Exp $
+
+PROG=	unfdpass
+NOMAN=	noman, no way, man
+
+CLEANFILES+=file1 file2 output test-sock
+
+regress:
+	@./unfdpass > output
+	@if ! cmp -s ${.CURDIR}/expected output; then \
+		echo "FAILED"; \
+	else \
+		echo "PASSED"; \
+	fi
+
+.include <bsd.prog.mk>
diff --git a/regress/sys/kern/unfdpass/expected b/regress/sys/kern/unfdpass/expected
new file mode 100644
index 00000000000..c7a7622045d
--- /dev/null
+++ b/regress/sys/kern/unfdpass/expected
@@ -0,0 +1,3 @@
+This is file 1.
+This is file 2.
+Credentials match.
diff --git a/regress/sys/kern/unfdpass/unfdpass.c b/regress/sys/kern/unfdpass/unfdpass.c
new file mode 100644
index 00000000000..c946eea23b0
--- /dev/null
+++ b/regress/sys/kern/unfdpass/unfdpass.c
@@ -0,0 +1,297 @@
+/*	$NetBSD: unfdpass.c,v 1.3 1998/06/24 23:51:30 thorpej Exp $	*/
+
+/*-
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+/*
+ * Test passing of file descriptors and credentials over Unix domain sockets.
+ */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <sys/un.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#define	SOCK_NAME	"test-sock"
+
+int	main __P((int, char *[]));
+void	child __P((void));
+void	catch_sigchld __P((int));
+
+struct fdcmessage {
+	struct cmsghdr cm;
+	int files[2];
+};
+
+struct crcmessage {
+	struct cmsghdr cm;
+	char creds[SOCKCREDSIZE(NGROUPS)];
+};
+
+/* ARGSUSED */
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	struct msghdr msg;
+	int listensock, sock, fd, i, status;
+	char fname[16], buf[64];
+	struct cmsghdr *cmp;
+	struct {
+		struct fdcmessage fdcm;
+		struct crcmessage crcm;
+	} message;
+	int *files = NULL;
+	struct sockcred *sc = NULL;
+	struct sockaddr_un sun, csun;
+	int csunlen;
+	fd_set oob;
+	pid_t pid;
+
+	/*
+	 * Create the test files.
+	 */
+	for (i = 0; i < 2; i++) {
+		(void) sprintf(fname, "file%d", i + 1);
+		if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1)
+			err(1, "open %s", fname);
+		(void) sprintf(buf, "This is file %d.\n", i + 1);
+		if (write(fd, buf, strlen(buf)) != strlen(buf))
+			err(1, "write %s", fname);
+		(void) close(fd);
+	}
+
+	/*
+	 * Create the listen socket.
+	 */
+	if ((listensock = socket(PF_LOCAL, SOCK_STREAM, 0)) == -1)
+		err(1, "socket");
+
+	(void) unlink(SOCK_NAME);
+	(void) memset(&sun, 0, sizeof(sun));
+	sun.sun_family = AF_LOCAL;
+	(void) strcpy(sun.sun_path, SOCK_NAME);
+	sun.sun_len = SUN_LEN(&sun);
+
+	i = 1;
+	if (setsockopt(listensock, 0, LOCAL_CREDS, &i, sizeof(i)) == -1)
+		err(1, "setsockopt");
+
+	if (bind(listensock, (struct sockaddr *)&sun, sizeof(sun)) == -1)
+		err(1, "bind");
+
+	if (listen(listensock, 1) == -1)
+		err(1, "listen");
+
+	/*
+	 * Create the sender.
+	 */
+	(void) signal(SIGCHLD, catch_sigchld);
+	pid = fork();
+	switch (pid) {
+	case -1:
+		err(1, "fork");
+		/* NOTREACHED */
+
+	case 0:
+		child();
+		/* NOTREACHED */
+	}
+
+	/*
+	 * Wait for the sender to connect.
+	 */
+	if ((sock = accept(listensock, (struct sockaddr *)&csun,
+	    &csunlen)) == -1)
+		err(1, "accept");
+
+	/*
+	 * Give sender a chance to run.  We will get going again
+	 * once the SIGCHLD arrives.
+	 */
+	(void) sleep(10);
+
+	/*
+	 * Grab the descriptors and credentials passed to us.
+	 */
+	(void) memset(&msg, 0, sizeof(msg));
+	msg.msg_control = (caddr_t) &message;
+	msg.msg_controllen = sizeof(message);
+
+	if (recvmsg(sock, &msg, 0) < 0)
+		err(1, "recvmsg");
+
+	(void) close(sock);
+
+	if (msg.msg_controllen == 0)
+		errx(1, "no control messages received");
+
+	if (msg.msg_flags & MSG_CTRUNC)
+		errx(1, "lost control message data");
+
+	cmp = CMSG_FIRSTHDR(&msg);
+	for (cmp = CMSG_FIRSTHDR(&msg); cmp != NULL;
+	    cmp = CMSG_NXTHDR(&msg, cmp)) {
+		if (cmp->cmsg_level != SOL_SOCKET)
+			errx(1, "bad control message level %d",
+			    cmp->cmsg_level);
+
+		switch (cmp->cmsg_type) {
+		case SCM_RIGHTS:
+			if (cmp->cmsg_len != sizeof(message.fdcm))
+				errx(1, "bad fd control message length");
+
+			files = (int *)CMSG_DATA(cmp);
+			break;
+
+		case SCM_CREDS:
+			if (cmp->cmsg_len < sizeof(struct sockcred))
+				errx(1, "bad cred control message length");
+
+			sc = (struct sockcred *)CMSG_DATA(cmp);
+			break;
+
+		default:
+			errx(1, "unexpected control message");
+			/* NOTREACHED */
+		}
+	}
+
+	/*
+	 * Read the files and print their contents.
+	 */
+	if (files == NULL)
+		warnx("didn't get fd control message");
+	else {
+		for (i = 0; i < 2; i++) {
+			(void) memset(buf, 0, sizeof(buf));
+			if (read(files[i], buf, sizeof(buf)) <= 0)
+				err(1, "read file %d", i + 1);
+			printf("%s", buf);
+		}
+	}
+
+	/*
+	 * Double-check credentials.
+	 */
+	if (sc == NULL)
+		warnx("didn't get cred control message");
+	else {
+		if (sc->sc_uid == getuid() &&
+		    sc->sc_euid == geteuid() &&
+		    sc->sc_gid == getgid() &&
+		    sc->sc_egid == getegid())
+			printf("Credentials match.\n");
+		else
+			printf("Credentials do NOT match.\n");
+	}
+
+	/*
+	 * All done!
+	 */
+	exit(0);
+}
+
+void
+catch_sigchld(sig)
+	int sig;
+{
+	int status;
+
+	(void) wait(&status);
+}
+
+void
+child()
+{
+	struct msghdr msg;
+	char fname[16], buf[64];
+	struct cmsghdr *cmp;
+	struct fdcmessage fdcm;
+	int i, fd, sock;
+	struct sockaddr_un sun;
+
+	/*
+	 * Create socket and connect to the receiver.
+	 */
+	if ((sock = socket(PF_LOCAL, SOCK_STREAM, 0)) == -1)
+		errx(1, "child socket");
+
+	(void) memset(&sun, 0, sizeof(sun));
+	sun.sun_family = AF_LOCAL;
+	(void) strcpy(sun.sun_path, SOCK_NAME);
+	sun.sun_len = SUN_LEN(&sun);
+
+	if (connect(sock, (struct sockaddr *)&sun, sizeof(sun)) == -1)
+		err(1, "child connect");
+
+	/*
+	 * Open the files again, and pass them to the child over the socket.
+	 */
+	for (i = 0; i < 2; i++) {
+		(void) sprintf(fname, "file%d", i + 1);
+		if ((fd = open(fname, O_RDONLY, 0666)) == -1)
+			err(1, "child open %s", fname);
+		fdcm.files[i] = fd;
+	}
+
+	(void) memset(&msg, 0, sizeof(msg));
+	msg.msg_control = (caddr_t) &fdcm;
+	msg.msg_controllen = sizeof(fdcm);
+
+	cmp = CMSG_FIRSTHDR(&msg);
+	cmp->cmsg_len = sizeof(fdcm);
+	cmp->cmsg_level = SOL_SOCKET;
+	cmp->cmsg_type = SCM_RIGHTS;
+
+	if (sendmsg(sock, &msg, 0))
+		err(1, "child sendmsg");
+
+	/*
+	 * All done!
+	 */
+	exit(0);
+}