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, 245 insertions, 0 deletions

diff --git a/include/sys/zfs_acl.h b/include/sys/zfs_acl.h
new file mode 100644
index 000000000..c1a0aeebd
--- /dev/null
+++ b/include/sys/zfs_acl.h
@@ -0,0 +1,245 @@
+/*
+ * 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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef	_SYS_FS_ZFS_ACL_H
+#define	_SYS_FS_ZFS_ACL_H
+
+#ifdef _KERNEL
+#include <sys/isa_defs.h>
+#include <sys/types32.h>
+#endif
+#include <sys/acl.h>
+#include <sys/dmu.h>
+#include <sys/zfs_fuid.h>
+#include <sys/sa.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+struct znode_phys;
+
+#define	ACE_SLOT_CNT	6
+#define	ZFS_ACL_VERSION_INITIAL 0ULL
+#define	ZFS_ACL_VERSION_FUID	1ULL
+#define	ZFS_ACL_VERSION		ZFS_ACL_VERSION_FUID
+
+/*
+ * ZFS ACLs are store in various forms.
+ * Files created with ACL version ZFS_ACL_VERSION_INITIAL
+ * will all be created with fixed length ACEs of type
+ * zfs_oldace_t.
+ *
+ * Files with ACL version ZFS_ACL_VERSION_FUID will be created
+ * with various sized ACEs.  The abstraction entries will utilize
+ * zfs_ace_hdr_t, normal user/group entries will use zfs_ace_t
+ * and some specialized CIFS ACEs will use zfs_object_ace_t.
+ */
+
+/*
+ * All ACEs have a common hdr.  For
+ * owner@, group@, and everyone@ this is all
+ * thats needed.
+ */
+typedef struct zfs_ace_hdr {
+	uint16_t z_type;
+	uint16_t z_flags;
+	uint32_t z_access_mask;
+} zfs_ace_hdr_t;
+
+typedef zfs_ace_hdr_t zfs_ace_abstract_t;
+
+/*
+ * Standard ACE
+ */
+typedef struct zfs_ace {
+	zfs_ace_hdr_t	z_hdr;
+	uint64_t	z_fuid;
+} zfs_ace_t;
+
+/*
+ * The following type only applies to ACE_ACCESS_ALLOWED|DENIED_OBJECT_ACE_TYPE
+ * and will only be set/retrieved in a CIFS context.
+ */
+
+typedef struct zfs_object_ace {
+	zfs_ace_t	z_ace;
+	uint8_t		z_object_type[16]; /* object type */
+	uint8_t		z_inherit_type[16]; /* inherited object type */
+} zfs_object_ace_t;
+
+typedef struct zfs_oldace {
+	uint32_t	z_fuid;		/* "who" */
+	uint32_t	z_access_mask;  /* access mask */
+	uint16_t	z_flags;	/* flags, i.e inheritance */
+	uint16_t	z_type;		/* type of entry allow/deny */
+} zfs_oldace_t;
+
+typedef struct zfs_acl_phys_v0 {
+	uint64_t	z_acl_extern_obj;	/* ext acl pieces */
+	uint32_t	z_acl_count;		/* Number of ACEs */
+	uint16_t	z_acl_version;		/* acl version */
+	uint16_t	z_acl_pad;		/* pad */
+	zfs_oldace_t	z_ace_data[ACE_SLOT_CNT]; /* 6 standard ACEs */
+} zfs_acl_phys_v0_t;
+
+#define	ZFS_ACE_SPACE	(sizeof (zfs_oldace_t) * ACE_SLOT_CNT)
+
+/*
+ * Size of ACL count is always 2 bytes.
+ * Necessary to for dealing with both V0 ACL and V1 ACL layout
+ */
+#define	ZFS_ACL_COUNT_SIZE	(sizeof (uint16_t))
+
+typedef struct zfs_acl_phys {
+	uint64_t	z_acl_extern_obj;	  /* ext acl pieces */
+	uint32_t	z_acl_size;		  /* Number of bytes in ACL */
+	uint16_t	z_acl_version;		  /* acl version */
+	uint16_t	z_acl_count;		  /* ace count */
+	uint8_t	z_ace_data[ZFS_ACE_SPACE]; /* space for embedded ACEs */
+} zfs_acl_phys_t;
+
+typedef struct acl_ops {
+	uint32_t	(*ace_mask_get) (void *acep); /* get  access mask */
+	void 		(*ace_mask_set) (void *acep,
+			    uint32_t mask); /* set access mask */
+	uint16_t	(*ace_flags_get) (void *acep);	/* get flags */
+	void		(*ace_flags_set) (void *acep,
+			    uint16_t flags); /* set flags */
+	uint16_t	(*ace_type_get)(void *acep); /* get type */
+	void		(*ace_type_set)(void *acep,
+			    uint16_t type); /* set type */
+	uint64_t	(*ace_who_get)(void *acep); /* get who/fuid */
+	void		(*ace_who_set)(void *acep,
+			    uint64_t who); /* set who/fuid */
+	size_t		(*ace_size)(void *acep); /* how big is this ace */
+	size_t		(*ace_abstract_size)(void); /* sizeof abstract entry */
+	int		(*ace_mask_off)(void); /* off of access mask in ace */
+	int		(*ace_data)(void *acep, void **datap);
+			    /* ptr to data if any */
+} acl_ops_t;
+
+/*
+ * A zfs_acl_t structure is composed of a list of zfs_acl_node_t's.
+ * Each node will have one or more ACEs associated with it.  You will
+ * only have multiple nodes during a chmod operation.   Normally only
+ * one node is required.
+ */
+typedef struct zfs_acl_node {
+	list_node_t	z_next;		/* Next chunk of ACEs */
+	void		*z_acldata;	/* pointer into actual ACE(s) */
+	void		*z_allocdata;	/* pointer to kmem allocated memory */
+	size_t		z_allocsize;	/* Size of blob in bytes */
+	size_t		z_size;		/* length of ACL data */
+	uint64_t	z_ace_count;	/* number of ACEs in this acl node */
+	int		z_ace_idx;	/* ace iterator positioned on */
+} zfs_acl_node_t;
+
+typedef struct zfs_acl {
+	uint64_t	z_acl_count;	/* Number of ACEs */
+	size_t		z_acl_bytes;	/* Number of bytes in ACL */
+	uint_t		z_version;	/* version of ACL */
+	void		*z_next_ace;	/* pointer to next ACE */
+	uint64_t	z_hints;	/* ACL hints (ZFS_INHERIT_ACE ...) */
+	zfs_acl_node_t	*z_curr_node;	/* current node iterator is handling */
+	list_t		z_acl;		/* chunks of ACE data */
+	acl_ops_t	z_ops;		/* ACL operations */
+} zfs_acl_t;
+
+typedef struct acl_locator_cb {
+	zfs_acl_t *cb_aclp;
+	zfs_acl_node_t *cb_acl_node;
+} zfs_acl_locator_cb_t;
+
+#define	ACL_DATA_ALLOCED	0x1
+#define	ZFS_ACL_SIZE(aclcnt)	(sizeof (ace_t) * (aclcnt))
+
+struct zfs_fuid_info;
+
+typedef struct zfs_acl_ids {
+	uint64_t		z_fuid;		/* file owner fuid */
+	uint64_t		z_fgid;		/* file group owner fuid */
+	uint64_t		z_mode;		/* mode to set on create */
+	zfs_acl_t		*z_aclp;	/* ACL to create with file */
+	struct zfs_fuid_info 	*z_fuidp;	/* for tracking fuids for log */
+} zfs_acl_ids_t;
+
+/*
+ * Property values for acl_mode and acl_inherit.
+ *
+ * acl_mode can take discard, noallow, groupmask and passthrough.
+ * whereas acl_inherit has secure instead of groupmask.
+ */
+
+#define	ZFS_ACL_DISCARD		0
+#define	ZFS_ACL_NOALLOW		1
+#define	ZFS_ACL_GROUPMASK	2
+#define	ZFS_ACL_PASSTHROUGH	3
+#define	ZFS_ACL_RESTRICTED	4
+#define	ZFS_ACL_PASSTHROUGH_X	5
+
+struct znode;
+struct zfsvfs;
+
+#ifdef _KERNEL
+int zfs_acl_ids_create(struct znode *, int, vattr_t *,
+    cred_t *, vsecattr_t *, zfs_acl_ids_t *);
+void zfs_acl_ids_free(zfs_acl_ids_t *);
+boolean_t zfs_acl_ids_overquota(struct zfsvfs *, zfs_acl_ids_t *);
+int zfs_getacl(struct znode *, vsecattr_t *, boolean_t, cred_t *);
+int zfs_setacl(struct znode *, vsecattr_t *, boolean_t, cred_t *);
+void zfs_acl_rele(void *);
+void zfs_oldace_byteswap(ace_t *, int);
+void zfs_ace_byteswap(void *, size_t, boolean_t);
+extern boolean_t zfs_has_access(struct znode *zp, cred_t *cr);
+extern int zfs_zaccess(struct znode *, int, int, boolean_t, cred_t *);
+int zfs_fastaccesschk_execute(struct znode *, cred_t *);
+extern int zfs_zaccess_rwx(struct znode *, mode_t, int, cred_t *);
+extern int zfs_zaccess_unix(struct znode *, mode_t, cred_t *);
+extern int zfs_acl_access(struct znode *, int, cred_t *);
+void zfs_acl_chmod_setattr(struct znode *, zfs_acl_t **, uint64_t);
+int zfs_zaccess_delete(struct znode *, struct znode *, cred_t *);
+int zfs_zaccess_rename(struct znode *, struct znode *,
+    struct znode *, struct znode *, cred_t *cr);
+void zfs_acl_free(zfs_acl_t *);
+int zfs_vsec_2_aclp(struct zfsvfs *, vtype_t, vsecattr_t *, cred_t *,
+    struct zfs_fuid_info **, zfs_acl_t **);
+int zfs_aclset_common(struct znode *, zfs_acl_t *, cred_t *, dmu_tx_t *);
+uint64_t zfs_external_acl(struct znode *);
+int zfs_znode_acl_version(struct znode *);
+int zfs_acl_size(struct znode *, int *);
+zfs_acl_t *zfs_acl_alloc(int);
+zfs_acl_node_t *zfs_acl_node_alloc(size_t);
+void zfs_acl_xform(struct znode *, zfs_acl_t *, cred_t *);
+void zfs_acl_data_locator(void **, uint32_t *, uint32_t, boolean_t, void *);
+uint64_t zfs_mode_compute(uint64_t, zfs_acl_t *,
+    uint64_t *, uint64_t, uint64_t);
+int zfs_acl_chown_setattr(struct znode *);
+
+#endif
+
+#ifdef	__cplusplus
+}
+#endif
+#endif	/* _SYS_FS_ZFS_ACL_H */