1 files changed, 128 insertions, 0 deletions
diff --git a/tools/regression/capsicum/syscalls/misc.c b/tools/regression/capsicum/syscalls/misc.c
new file mode 100644
index 0000000..303a911
--- /dev/null
+++ b/tools/regression/capsicum/syscalls/misc.c
@@ -0,0 +1,128 @@
+/*-
+ * Copyright (c) 2012 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Pawel Jakub Dawidek under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * 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 AUTHORS 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 AUTHORS 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/select.h>
+#include <sys/socket.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <strings.h>
+
+#include "misc.h"
+
+int
+pdwait(int pfd)
+{
+	fd_set fdset;
+
+	FD_ZERO(&fdset);
+	FD_SET(pfd, &fdset);
+
+	return (select(pfd + 1, NULL, &fdset, NULL, NULL) == -1 ? -1 : 0);
+}
+
+int
+descriptor_send(int sock, int fd)
+{
+	unsigned char ctrl[CMSG_SPACE(sizeof(fd))];
+	struct msghdr msg;
+	struct cmsghdr *cmsg;
+
+	assert(sock >= 0);
+	assert(fd >= 0);
+
+	bzero(&msg, sizeof(msg));
+	bzero(&ctrl, sizeof(ctrl));
+
+	msg.msg_iov = NULL;
+	msg.msg_iovlen = 0;
+	msg.msg_control = ctrl;
+	msg.msg_controllen = sizeof(ctrl);
+
+	cmsg = CMSG_FIRSTHDR(&msg);
+	cmsg->cmsg_level = SOL_SOCKET;
+	cmsg->cmsg_type = SCM_RIGHTS;
+	cmsg->cmsg_len = CMSG_LEN(sizeof(fd));
+	bcopy(&fd, CMSG_DATA(cmsg), sizeof(fd));
+
+	if (sendmsg(sock, &msg, 0) == -1)
+		return (errno);
+
+	return (0);
+}
+
+int
+descriptor_recv(int sock, int *fdp)
+{
+	unsigned char ctrl[CMSG_SPACE(sizeof(*fdp))];
+	struct msghdr msg;
+	struct cmsghdr *cmsg;
+	struct iovec iov;
+	int val;
+
+	assert(sock >= 0);
+	assert(fdp != NULL);
+
+	bzero(&msg, sizeof(msg));
+	bzero(&ctrl, sizeof(ctrl));
+
+#if 1
+	/*
+	 * This doesn't really make sense, as we don't plan to receive any
+	 * data, but if no buffer is provided and recv(2) returns 0 without
+	 * control message. Must be kernel bug.
+	 */
+	iov.iov_base = &val;
+	iov.iov_len = sizeof(val);
+	msg.msg_iov = &iov;
+	msg.msg_iovlen = 1;
+#else
+	msg.msg_iov = NULL;
+	msg.msg_iovlen = 0;
+#endif
+	msg.msg_control = ctrl;
+	msg.msg_controllen = sizeof(ctrl);
+
+	if (recvmsg(sock, &msg, 0) == -1)
+		return (errno);
+
+	cmsg = CMSG_FIRSTHDR(&msg);
+	if (cmsg == NULL || cmsg->cmsg_level != SOL_SOCKET ||
+	    cmsg->cmsg_type != SCM_RIGHTS) {
+		return (EINVAL);
+	}
+	bcopy(CMSG_DATA(cmsg), fdp, sizeof(*fdp));
+
+	return (0);
+}