Update to FreeBSD head 2017-12-01

Git mirror commit e724f51f811a4b2bd29447f8b85ab5c2f9b88266.

Update #3472.

1 files changed, 244 insertions, 0 deletions

diff --git a/freebsd/lib/libcasper/libcasper/libcasper.h b/freebsd/lib/libcasper/libcasper/libcasper.h
new file mode 100644
index 00000000..8ad15bc6
--- /dev/null
+++ b/freebsd/lib/libcasper/libcasper/libcasper.h
@@ -0,0 +1,244 @@
+/*-
+ * Copyright (c) 2012-2013 The FreeBSD Foundation
+ * Copyright (c) 2015-2017 Mariusz Zaborski <oshogbo@FreeBSD.org>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef	_LIBCASPER_H_
+#define	_LIBCASPER_H_
+
+#ifdef HAVE_CASPER
+#define WITH_CASPER
+#endif
+
+#include <sys/types.h>
+#include <sys/nv.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#ifndef	_NVLIST_T_DECLARED
+#define	_NVLIST_T_DECLARED
+struct nvlist;
+
+typedef struct nvlist nvlist_t;
+#endif
+
+#ifndef	_CAP_CHANNEL_T_DECLARED
+#define	_CAP_CHANNEL_T_DECLARED
+#ifdef WITH_CASPER
+struct cap_channel;
+
+typedef struct cap_channel cap_channel_t;
+#define	CASPER_SUPPORT	(1)
+#else
+struct cap_channel {
+	int cch_fd;
+};
+typedef struct cap_channel cap_channel_t;
+#define	CASPER_SUPPORT	(0)
+#endif /* ! WITH_CASPER */
+#endif /* ! _CAP_CHANNEL_T_DECLARED */
+
+/*
+ * The functions opens unrestricted communication channel to Casper.
+ */
+#ifdef WITH_CASPER
+cap_channel_t *cap_init(void);
+#else
+static inline cap_channel_t *
+cap_init(void)
+{
+	cap_channel_t *chan;
+
+	chan = malloc(sizeof(*chan));
+	if (chan != NULL) {
+		chan->cch_fd = -1;
+	}
+	return (chan);
+}
+#endif
+
+/*
+ * The functions to communicate with service.
+ */
+#ifdef WITH_CASPER
+cap_channel_t	*cap_service_open(const cap_channel_t *chan, const char *name);
+int		 cap_service_limit(const cap_channel_t *chan,
+		    const char * const *names, size_t nnames);
+#else
+#define	cap_service_open(chan, name)		(cap_init())
+#define	cap_service_limit(chan, names, nnames)	(0)
+#endif
+
+/*
+ * The function creates cap_channel_t based on the given socket.
+ */
+#ifdef WITH_CASPER
+cap_channel_t *cap_wrap(int sock);
+#else
+static inline cap_channel_t *
+cap_wrap(int sock)
+{
+	cap_channel_t *chan;
+
+	chan = cap_init();
+	if (chan != NULL) {
+		chan->cch_fd = sock;
+	}
+	return (chan);
+}
+#endif
+
+/*
+ * The function returns communication socket and frees cap_channel_t.
+ */
+#ifdef WITH_CASPER
+int	cap_unwrap(cap_channel_t *chan);
+#else
+#define	cap_unwrap(chan)	(chan->cch_fd)
+#endif
+
+/*
+ * The function clones the given capability.
+ */
+#ifdef WITH_CASPER
+cap_channel_t *cap_clone(const cap_channel_t *chan);
+#else
+static inline cap_channel_t *
+cap_clone(const cap_channel_t *chan)
+{
+	cap_channel_t *newchan;
+
+	newchan = cap_init();
+	if (newchan == NULL) {
+		return (NULL);
+	}
+
+	if (chan->cch_fd == -1) {
+		newchan->cch_fd = -1;
+	} else {
+		newchan->cch_fd = dup(chan->cch_fd);
+		if (newchan->cch_fd < 0) {
+			free(newchan);
+			newchan = NULL;
+		}
+	}
+
+	return (newchan);
+}
+#endif
+
+/*
+ * The function closes the given capability.
+ */
+#ifdef WITH_CASPER
+void	cap_close(cap_channel_t *chan);
+#else
+static inline void
+cap_close(cap_channel_t *chan)
+{
+
+	if (chan->cch_fd >= 0) {
+		close(chan->cch_fd);
+	}
+	free(chan);
+}
+#endif
+
+/*
+ * The function returns socket descriptor associated with the given
+ * cap_channel_t for use with select(2)/kqueue(2)/etc.
+ */
+#ifdef WITH_CASPER
+int	cap_sock(const cap_channel_t *chan);
+#else
+#define	cap_sock(chan)	(chan->cch_fd)
+#endif
+
+/*
+ * The function limits the given capability.
+ * It always destroys 'limits' on return.
+ */
+#ifdef WITH_CASPER
+int	cap_limit_set(const cap_channel_t *chan, nvlist_t *limits);
+#else
+#define	cap_limit_set(chan, limits)	(0)
+#endif
+
+/*
+ * The function returns current limits of the given capability.
+ */
+#ifdef WITH_CASPER
+int	cap_limit_get(const cap_channel_t *chan, nvlist_t **limitsp);
+#else
+static inline int
+cap_limit_get(const cap_channel_t *chan __unused, nvlist_t **limitsp)
+{
+
+	*limitsp = nvlist_create(0);
+	return (0);
+}
+#endif
+
+/*
+ * Function sends nvlist over the given capability.
+ */
+#ifdef WITH_CASPER
+int	cap_send_nvlist(const cap_channel_t *chan, const nvlist_t *nvl);
+#else
+#define	cap_send_nvlist(chan, nvl)	(0)
+#endif
+
+/*
+ * Function receives nvlist over the given capability.
+ */
+#ifdef WITH_CASPER
+nvlist_t *cap_recv_nvlist(const cap_channel_t *chan, int flags);
+#else
+#define	cap_recv_nvlist(chan, flags)	(0)
+#endif
+
+/*
+ * Function sends the given nvlist, destroys it and receives new nvlist in
+ * response over the given capability.
+ */
+#ifdef WITH_CASPER
+nvlist_t *cap_xfer_nvlist(const cap_channel_t *chan, nvlist_t *nvl, int flags);
+#else
+static inline nvlist_t *
+cap_xfer_nvlist(const cap_channel_t *chan __unused, nvlist_t *nvl, int flags)
+{
+
+	nvlist_destroy(nvl);
+	return (nvlist_create(flags));
+}
+#endif
+
+#endif	/* !_LIBCASPER_H_ */