Support custom build directories and move includes

One of the neat tricks an autoconf style project is capable of
is allow configurion/building in a directory other than the
source directory.  The major advantage to this is that you can
build the project various different ways while making changes
in a single source tree.

For example, this project is designed to work on various different
Linux distributions each of which work slightly differently.  This
means that changes need to verified on each of those supported
distributions perferably before the change is committed to the
public git repo.

Using nfs and custom build directories makes this much easier.
I now have a single source tree in nfs mounted on several different
systems each running a supported distribution.  When I make a
change to the source base I suspect may break things I can
concurrently build from the same source on all the systems each
in their own subdirectory.

wget -c http://github.com/downloads/behlendorf/zfs/zfs-x.y.z.tar.gz
tar -xzf zfs-x.y.z.tar.gz
cd zfs-x-y-z

------------------------- run concurrently ----------------------
<ubuntu system>  <fedora system>  <debian system>  <rhel6 system>
mkdir ubuntu     mkdir fedora     mkdir debian     mkdir rhel6
cd ubuntu        cd fedora        cd debian        cd rhel6
../configure     ../configure     ../configure     ../configure
make             make             make             make
make check       make check       make check       make check

This change also moves many of the include headers from individual
incude/sys directories under the modules directory in to a single
top level include directory.  This has the advantage of making
the build rules cleaner and logically it makes a bit more sense.

1 files changed, 115 insertions, 0 deletions

diff --git a/include/sys/fm/util.h b/include/sys/fm/util.h
new file mode 100644
index 000000000..94947d67c
--- /dev/null
+++ b/include/sys/fm/util.h
@@ -0,0 +1,115 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef	_SYS_FM_UTIL_H
+#define	_SYS_FM_UTIL_H
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#include <sys/nvpair.h>
+
+/*
+ * Shared user/kernel definitions for class length, error channel name,
+ * and kernel event publisher string.
+ */
+#define	FM_MAX_CLASS 100
+#define	FM_ERROR_CHAN	"com.sun:fm:error"
+#define	FM_PUB		"fm"
+
+/*
+ * ereport dump device transport support
+ *
+ * Ereports are written out to the dump device at a proscribed offset from the
+ * end, similar to in-transit log messages.  The ereports are represented as a
+ * erpt_dump_t header followed by ed_size bytes of packed native nvlist data.
+ *
+ * NOTE: All of these constants and the header must be defined so they have the
+ * same representation for *both* 32-bit and 64-bit producers and consumers.
+ */
+#define	ERPT_MAGIC	0xf00d4eddU
+#define	ERPT_MAX_ERRS	16
+#define	ERPT_DATA_SZ	(6 * 1024)
+#define	ERPT_EVCH_MAX	256
+#define	ERPT_HIWAT	64
+
+typedef struct erpt_dump {
+	uint32_t ed_magic;	/* ERPT_MAGIC or zero to indicate end */
+	uint32_t ed_chksum;	/* checksum32() of packed nvlist data */
+	uint32_t ed_size;	/* ereport (nvl) fixed buf size */
+	uint32_t ed_pad;	/* reserved for future use */
+	hrtime_t ed_hrt_nsec;	/* hrtime of this ereport */
+	hrtime_t ed_hrt_base;	/* hrtime sample corresponding to ed_tod_base */
+	struct {
+		uint64_t sec;	/* seconds since gettimeofday() Epoch */
+		uint64_t nsec;	/* nanoseconds past ed_tod_base.sec */
+	} ed_tod_base;
+} erpt_dump_t;
+
+#ifdef _KERNEL
+
+#define ZEVENT_SHUTDOWN	0x1
+
+typedef void zevent_cb_t(nvlist_t *, nvlist_t *);
+
+typedef struct zevent_s {
+	nvlist_t	*ev_nvl;       /* protected by the zevent_lock */
+	nvlist_t	*ev_detector;  /* " */
+	list_t		ev_ze_list;    /* " */
+	list_node_t	ev_node;       /* " */
+	zevent_cb_t	*ev_cb;        /* " */
+} zevent_t;
+
+typedef struct zfs_zevent {
+	zevent_t	*ze_zevent;    /* protected by the zevent_lock */
+	list_node_t	ze_node;       /* " */
+	uint64_t	ze_dropped;    /* " */
+} zfs_zevent_t;
+
+extern void fm_init(void);
+extern void fm_fini(void);
+extern void fm_nvprint(nvlist_t *);
+extern void zfs_zevent_post(nvlist_t *, nvlist_t *, zevent_cb_t *);
+extern void zfs_zevent_drain_all(int *);
+extern int zfs_zevent_fd_hold(int, minor_t *, zfs_zevent_t **);
+extern void zfs_zevent_fd_rele(int);
+extern int zfs_zevent_next(zfs_zevent_t *, nvlist_t **, uint64_t *);
+extern int zfs_zevent_wait(zfs_zevent_t *);
+extern void zfs_zevent_init(zfs_zevent_t **);
+extern void zfs_zevent_destroy(zfs_zevent_t *);
+
+#else
+
+static inline void fm_init(void) { }
+static inline void fm_fini(void) { }
+
+#endif  /* _KERNEL */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _SYS_FM_UTIL_H */