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, 220 insertions, 0 deletions

diff --git a/include/libzfs_impl.h b/include/libzfs_impl.h
new file mode 100644
index 000000000..2389b7823
--- /dev/null
+++ b/include/libzfs_impl.h
@@ -0,0 +1,220 @@
+/*
+ * CDDL HEADER SART
+ *
+ * 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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef	_LIBFS_IMPL_H
+#define	_LIBFS_IMPL_H
+
+#include <sys/dmu.h>
+#include <sys/fs/zfs.h>
+#include <sys/zfs_ioctl.h>
+#include <sys/spa.h>
+#include <sys/nvpair.h>
+
+#include <libuutil.h>
+#include <libzfs.h>
+#include <libshare.h>
+
+#if defined(HAVE_LIBTOPO)
+#include <fm/libtopo.h>
+#endif /* HAVE_LIBTOPO */
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#ifdef	VERIFY
+#undef	VERIFY
+#endif
+#define	VERIFY	verify
+
+typedef struct libzfs_fru {
+	char *zf_device;
+	char *zf_fru;
+	struct libzfs_fru *zf_chain;
+	struct libzfs_fru *zf_next;
+} libzfs_fru_t;
+
+struct libzfs_handle {
+	int libzfs_error;
+	int libzfs_fd;
+	FILE *libzfs_mnttab;
+	FILE *libzfs_sharetab;
+	zpool_handle_t *libzfs_pool_handles;
+	uu_avl_pool_t *libzfs_ns_avlpool;
+	uu_avl_t *libzfs_ns_avl;
+	uint64_t libzfs_ns_gen;
+	int libzfs_desc_active;
+	char libzfs_action[1024];
+	char libzfs_desc[1024];
+	char *libzfs_log_str;
+	int libzfs_printerr;
+	int libzfs_storeerr; /* stuff error messages into buffer */
+	void *libzfs_sharehdl; /* libshare handle */
+	uint_t libzfs_shareflags;
+	boolean_t libzfs_mnttab_enable;
+	avl_tree_t libzfs_mnttab_cache;
+	int libzfs_pool_iter;
+#if defined(HAVE_LIBTOPO)
+	topo_hdl_t *libzfs_topo_hdl;
+	libzfs_fru_t **libzfs_fru_hash;
+	libzfs_fru_t *libzfs_fru_list;
+#endif /* HAVE_LIBTOPO */
+	char libzfs_chassis_id[256];
+};
+
+#define	ZFSSHARE_MISS	0x01	/* Didn't find entry in cache */
+
+struct zfs_handle {
+	libzfs_handle_t *zfs_hdl;
+	zpool_handle_t *zpool_hdl;
+	char zfs_name[ZFS_MAXNAMELEN];
+	zfs_type_t zfs_type; /* type including snapshot */
+	zfs_type_t zfs_head_type; /* type excluding snapshot */
+	dmu_objset_stats_t zfs_dmustats;
+	nvlist_t *zfs_props;
+	nvlist_t *zfs_user_props;
+	nvlist_t *zfs_recvd_props;
+	boolean_t zfs_mntcheck;
+	char *zfs_mntopts;
+	uint8_t *zfs_props_table;
+};
+
+/*
+ * This is different from checking zfs_type, because it will also catch
+ * snapshots of volumes.
+ */
+#define	ZFS_IS_VOLUME(zhp) ((zhp)->zfs_head_type == ZFS_TYPE_VOLUME)
+
+struct zpool_handle {
+	libzfs_handle_t *zpool_hdl;
+	zpool_handle_t *zpool_next;
+	char zpool_name[ZPOOL_MAXNAMELEN];
+	int zpool_state;
+	size_t zpool_config_size;
+	nvlist_t *zpool_config;
+	nvlist_t *zpool_old_config;
+	nvlist_t *zpool_props;
+	diskaddr_t zpool_start_block;
+};
+
+typedef  enum {
+	PROTO_NFS = 0,
+	PROTO_SMB = 1,
+	PROTO_END = 2
+} zfs_share_proto_t;
+
+/*
+ * The following can be used as a bitmask and any new values
+ * added must preserve that capability.
+ */
+typedef enum {
+	SHARED_NOT_SHARED = 0x0,
+	SHARED_NFS = 0x2,
+	SHARED_SMB = 0x4
+} zfs_share_type_t;
+
+int zfs_error(libzfs_handle_t *, int, const char *);
+int zfs_error_fmt(libzfs_handle_t *, int, const char *, ...);
+void zfs_error_aux(libzfs_handle_t *, const char *, ...);
+void *zfs_alloc(libzfs_handle_t *, size_t);
+void *zfs_realloc(libzfs_handle_t *, void *, size_t, size_t);
+char *zfs_asprintf(libzfs_handle_t *, const char *, ...);
+char *zfs_strdup(libzfs_handle_t *, const char *);
+int no_memory(libzfs_handle_t *);
+
+int zfs_standard_error(libzfs_handle_t *, int, const char *);
+int zfs_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
+int zpool_standard_error(libzfs_handle_t *, int, const char *);
+int zpool_standard_error_fmt(libzfs_handle_t *, int, const char *, ...);
+
+int get_dependents(libzfs_handle_t *, boolean_t, const char *, char ***,
+    size_t *);
+
+
+int zprop_parse_value(libzfs_handle_t *, nvpair_t *, int, zfs_type_t,
+    nvlist_t *, char **, uint64_t *, const char *);
+int zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp,
+    zfs_type_t type);
+
+/*
+ * Use this changelist_gather() flag to force attempting mounts
+ * on each change node regardless of whether or not it is currently
+ * mounted.
+ */
+#define	CL_GATHER_MOUNT_ALWAYS	1
+
+typedef struct prop_changelist prop_changelist_t;
+
+int zcmd_alloc_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, size_t);
+int zcmd_write_src_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
+int zcmd_write_conf_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t *);
+int zcmd_expand_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *);
+int zcmd_read_dst_nvlist(libzfs_handle_t *, zfs_cmd_t *, nvlist_t **);
+void zcmd_free_nvlists(zfs_cmd_t *);
+
+int changelist_prefix(prop_changelist_t *);
+int changelist_postfix(prop_changelist_t *);
+void changelist_rename(prop_changelist_t *, const char *, const char *);
+void changelist_remove(prop_changelist_t *, const char *);
+void changelist_free(prop_changelist_t *);
+prop_changelist_t *changelist_gather(zfs_handle_t *, zfs_prop_t, int, int);
+int changelist_unshare(prop_changelist_t *, zfs_share_proto_t *);
+int changelist_haszonedchild(prop_changelist_t *);
+
+void remove_mountpoint(zfs_handle_t *);
+int create_parents(libzfs_handle_t *, char *, int);
+boolean_t isa_child_of(const char *dataset, const char *parent);
+
+zfs_handle_t *make_dataset_handle(libzfs_handle_t *, const char *);
+
+int zpool_open_silent(libzfs_handle_t *, const char *, zpool_handle_t **);
+
+int zvol_create_link(libzfs_handle_t *, const char *);
+int zvol_remove_link(libzfs_handle_t *, const char *);
+boolean_t zpool_name_valid(libzfs_handle_t *, boolean_t, const char *);
+
+int zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
+    boolean_t modifying);
+
+void namespace_clear(libzfs_handle_t *);
+
+/*
+ * libshare (sharemgr) interfaces used internally.
+ */
+
+extern int zfs_init_libshare(libzfs_handle_t *, int);
+extern void zfs_uninit_libshare(libzfs_handle_t *);
+extern int zfs_parse_options(char *, zfs_share_proto_t);
+
+extern int zfs_unshare_proto(zfs_handle_t *,
+    const char *, zfs_share_proto_t *);
+
+extern void libzfs_fru_clear(libzfs_handle_t *, boolean_t);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/* _LIBFS_IMPL_H */