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Diffstat (limited to 'sys/contrib/openzfs/include/sys/zfs_znode.h')
| -rw-r--r-- | sys/contrib/openzfs/include/sys/zfs_znode.h | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/include/sys/zfs_znode.h b/sys/contrib/openzfs/include/sys/zfs_znode.h new file mode 100644 index 000000000000..d7823221eb77 --- /dev/null +++ b/sys/contrib/openzfs/include/sys/zfs_znode.h @@ -0,0 +1,295 @@ +/* + * 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. + * Copyright (c) 2012, 2018 by Delphix. All rights reserved. + * Copyright 2016 Nexenta Systems, Inc. All rights reserved. + */ + +#ifndef _SYS_FS_ZFS_ZNODE_H +#define _SYS_FS_ZFS_ZNODE_H + +#include <sys/zfs_acl.h> +#include <sys/zil.h> +#include <sys/zfs_project.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Additional file level attributes, that are stored + * in the upper half of zp_flags + */ +#define ZFS_READONLY 0x0000000100000000ull +#define ZFS_HIDDEN 0x0000000200000000ull +#define ZFS_SYSTEM 0x0000000400000000ull +#define ZFS_ARCHIVE 0x0000000800000000ull +#define ZFS_IMMUTABLE 0x0000001000000000ull +#define ZFS_NOUNLINK 0x0000002000000000ull +#define ZFS_APPENDONLY 0x0000004000000000ull +#define ZFS_NODUMP 0x0000008000000000ull +#define ZFS_OPAQUE 0x0000010000000000ull +#define ZFS_AV_QUARANTINED 0x0000020000000000ull +#define ZFS_AV_MODIFIED 0x0000040000000000ull +#define ZFS_REPARSE 0x0000080000000000ull +#define ZFS_OFFLINE 0x0000100000000000ull +#define ZFS_SPARSE 0x0000200000000000ull + +/* + * PROJINHERIT attribute is used to indicate that the child object under the + * directory which has the PROJINHERIT attribute needs to inherit its parent + * project ID that is used by project quota. + */ +#define ZFS_PROJINHERIT 0x0000400000000000ull + +/* + * PROJID attr is used internally to indicate that the object has project ID. + */ +#define ZFS_PROJID 0x0000800000000000ull + +#define ZFS_ATTR_SET(zp, attr, value, pflags, tx) \ +{ \ + if (value) \ + pflags |= attr; \ + else \ + pflags &= ~attr; \ + VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_FLAGS(ZTOZSB(zp)), \ + &pflags, sizeof (pflags), tx)); \ +} + +/* + * Define special zfs pflags + */ +#define ZFS_XATTR 0x1 /* is an extended attribute */ +#define ZFS_INHERIT_ACE 0x2 /* ace has inheritable ACEs */ +#define ZFS_ACL_TRIVIAL 0x4 /* files ACL is trivial */ +#define ZFS_ACL_OBJ_ACE 0x8 /* ACL has CMPLX Object ACE */ +#define ZFS_ACL_PROTECTED 0x10 /* ACL protected */ +#define ZFS_ACL_DEFAULTED 0x20 /* ACL should be defaulted */ +#define ZFS_ACL_AUTO_INHERIT 0x40 /* ACL should be inherited */ +#define ZFS_BONUS_SCANSTAMP 0x80 /* Scanstamp in bonus area */ +#define ZFS_NO_EXECS_DENIED 0x100 /* exec was given to everyone */ + +#define SA_ZPL_ATIME(z) z->z_attr_table[ZPL_ATIME] +#define SA_ZPL_MTIME(z) z->z_attr_table[ZPL_MTIME] +#define SA_ZPL_CTIME(z) z->z_attr_table[ZPL_CTIME] +#define SA_ZPL_CRTIME(z) z->z_attr_table[ZPL_CRTIME] +#define SA_ZPL_GEN(z) z->z_attr_table[ZPL_GEN] +#define SA_ZPL_DACL_ACES(z) z->z_attr_table[ZPL_DACL_ACES] +#define SA_ZPL_XATTR(z) z->z_attr_table[ZPL_XATTR] +#define SA_ZPL_SYMLINK(z) z->z_attr_table[ZPL_SYMLINK] +#define SA_ZPL_RDEV(z) z->z_attr_table[ZPL_RDEV] +#define SA_ZPL_SCANSTAMP(z) z->z_attr_table[ZPL_SCANSTAMP] +#define SA_ZPL_UID(z) z->z_attr_table[ZPL_UID] +#define SA_ZPL_GID(z) z->z_attr_table[ZPL_GID] +#define SA_ZPL_PARENT(z) z->z_attr_table[ZPL_PARENT] +#define SA_ZPL_LINKS(z) z->z_attr_table[ZPL_LINKS] +#define SA_ZPL_MODE(z) z->z_attr_table[ZPL_MODE] +#define SA_ZPL_DACL_COUNT(z) z->z_attr_table[ZPL_DACL_COUNT] +#define SA_ZPL_FLAGS(z) z->z_attr_table[ZPL_FLAGS] +#define SA_ZPL_SIZE(z) z->z_attr_table[ZPL_SIZE] +#define SA_ZPL_ZNODE_ACL(z) z->z_attr_table[ZPL_ZNODE_ACL] +#define SA_ZPL_DXATTR(z) z->z_attr_table[ZPL_DXATTR] +#define SA_ZPL_PAD(z) z->z_attr_table[ZPL_PAD] +#define SA_ZPL_PROJID(z) z->z_attr_table[ZPL_PROJID] + +/* + * Is ID ephemeral? + */ +#define IS_EPHEMERAL(x) (x > MAXUID) + +/* + * Should we use FUIDs? + */ +#define USE_FUIDS(version, os) (version >= ZPL_VERSION_FUID && \ + spa_version(dmu_objset_spa(os)) >= SPA_VERSION_FUID) +#define USE_SA(version, os) (version >= ZPL_VERSION_SA && \ + spa_version(dmu_objset_spa(os)) >= SPA_VERSION_SA) + +#define MASTER_NODE_OBJ 1 + +/* + * Special attributes for master node. + * "userquota@", "groupquota@" and "projectquota@" are also valid (from + * zfs_userquota_prop_prefixes[]). + */ +#define ZFS_FSID "FSID" +#define ZFS_UNLINKED_SET "DELETE_QUEUE" +#define ZFS_ROOT_OBJ "ROOT" +#define ZPL_VERSION_STR "VERSION" +#define ZFS_FUID_TABLES "FUID" +#define ZFS_SHARES_DIR "SHARES" +#define ZFS_SA_ATTRS "SA_ATTRS" + +/* + * Convert mode bits (zp_mode) to BSD-style DT_* values for storing in + * the directory entries. On Linux systems this value is already + * defined correctly as part of the /usr/include/dirent.h header file. + */ +#ifndef IFTODT +#define IFTODT(mode) (((mode) & S_IFMT) >> 12) +#endif + +/* + * The directory entry has the type (currently unused on Solaris) in the + * top 4 bits, and the object number in the low 48 bits. The "middle" + * 12 bits are unused. + */ +#define ZFS_DIRENT_TYPE(de) BF64_GET(de, 60, 4) +#define ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48) + +extern int zfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len); + +#ifdef _KERNEL +#include <sys/zfs_znode_impl.h> + +/* + * Directory entry locks control access to directory entries. + * They are used to protect creates, deletes, and renames. + * Each directory znode has a mutex and a list of locked names. + */ +typedef struct zfs_dirlock { + char *dl_name; /* directory entry being locked */ + uint32_t dl_sharecnt; /* 0 if exclusive, > 0 if shared */ + uint8_t dl_namelock; /* 1 if z_name_lock is NOT held */ + uint16_t dl_namesize; /* set if dl_name was allocated */ + kcondvar_t dl_cv; /* wait for entry to be unlocked */ + struct znode *dl_dzp; /* directory znode */ + struct zfs_dirlock *dl_next; /* next in z_dirlocks list */ +} zfs_dirlock_t; + +typedef struct znode { + uint64_t z_id; /* object ID for this znode */ + kmutex_t z_lock; /* znode modification lock */ + krwlock_t z_parent_lock; /* parent lock for directories */ + krwlock_t z_name_lock; /* "master" lock for dirent locks */ + zfs_dirlock_t *z_dirlocks; /* directory entry lock list */ + zfs_rangelock_t z_rangelock; /* file range locks */ + boolean_t z_unlinked; /* file has been unlinked */ + boolean_t z_atime_dirty; /* atime needs to be synced */ + boolean_t z_zn_prefetch; /* Prefetch znodes? */ + boolean_t z_moved; /* Has this znode been moved? */ + boolean_t z_is_sa; /* are we native sa? */ + boolean_t z_is_mapped; /* are we mmap'ed */ + boolean_t z_is_ctldir; /* are we .zfs entry */ + boolean_t z_is_stale; /* are we stale due to rollback? */ + boolean_t z_suspended; /* extra ref from a suspend? */ + uint_t z_blksz; /* block size in bytes */ + uint_t z_seq; /* modification sequence number */ + uint64_t z_mapcnt; /* number of pages mapped to file */ + uint64_t z_dnodesize; /* dnode size */ + uint64_t z_size; /* file size (cached) */ + uint64_t z_pflags; /* pflags (cached) */ + uint32_t z_sync_cnt; /* synchronous open count */ + mode_t z_mode; /* mode (cached) */ + kmutex_t z_acl_lock; /* acl data lock */ + zfs_acl_t *z_acl_cached; /* cached acl */ + krwlock_t z_xattr_lock; /* xattr data lock */ + nvlist_t *z_xattr_cached; /* cached xattrs */ + uint64_t z_xattr_parent; /* parent obj for this xattr */ + uint64_t z_projid; /* project ID */ + list_node_t z_link_node; /* all znodes in fs link */ + sa_handle_t *z_sa_hdl; /* handle to sa data */ + + /* + * Platform specific field, defined by each platform and only + * accessible from platform specific code. + */ + ZNODE_OS_FIELDS; +} znode_t; + +typedef struct znode_hold { + uint64_t zh_obj; /* object id */ + kmutex_t zh_lock; /* lock serializing object access */ + avl_node_t zh_node; /* avl tree linkage */ + zfs_refcount_t zh_refcount; /* active consumer reference count */ +} znode_hold_t; + +static inline uint64_t +zfs_inherit_projid(znode_t *dzp) +{ + return ((dzp->z_pflags & ZFS_PROJINHERIT) ? dzp->z_projid : + ZFS_DEFAULT_PROJID); +} + +/* + * Timestamp defines + */ +#define ACCESSED (ATTR_ATIME) +#define STATE_CHANGED (ATTR_CTIME) +#define CONTENT_MODIFIED (ATTR_MTIME | ATTR_CTIME) + +extern int zfs_init_fs(zfsvfs_t *, znode_t **); +extern void zfs_set_dataprop(objset_t *); +extern void zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *, + dmu_tx_t *tx); +extern void zfs_tstamp_update_setup(znode_t *, uint_t, uint64_t [2], + uint64_t [2]); +extern void zfs_grow_blocksize(znode_t *, uint64_t, dmu_tx_t *); +extern int zfs_freesp(znode_t *, uint64_t, uint64_t, int, boolean_t); +extern void zfs_znode_init(void); +extern void zfs_znode_fini(void); +extern int zfs_znode_hold_compare(const void *, const void *); +extern int zfs_zget(zfsvfs_t *, uint64_t, znode_t **); +extern int zfs_rezget(znode_t *); +extern void zfs_zinactive(znode_t *); +extern void zfs_znode_delete(znode_t *, dmu_tx_t *); +extern void zfs_remove_op_tables(void); +extern int zfs_create_op_tables(void); +extern dev_t zfs_cmpldev(uint64_t); +extern int zfs_get_zplprop(objset_t *os, zfs_prop_t prop, uint64_t *value); +extern int zfs_get_stats(objset_t *os, nvlist_t *nv); +extern boolean_t zfs_get_vfs_flag_unmounted(objset_t *os); +extern void zfs_znode_dmu_fini(znode_t *); + +extern void zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, + znode_t *dzp, znode_t *zp, char *name, vsecattr_t *, zfs_fuid_info_t *, + vattr_t *vap); +extern int zfs_log_create_txtype(zil_create_t, vsecattr_t *vsecp, + vattr_t *vap); +extern void zfs_log_remove(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, + znode_t *dzp, char *name, uint64_t foid, boolean_t unlinked); +#define ZFS_NO_OBJECT 0 /* no object id */ +extern void zfs_log_link(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, + znode_t *dzp, znode_t *zp, char *name); +extern void zfs_log_symlink(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, + znode_t *dzp, znode_t *zp, char *name, char *link); +extern void zfs_log_rename(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype, + znode_t *sdzp, char *sname, znode_t *tdzp, char *dname, znode_t *szp); +extern void zfs_log_write(zilog_t *zilog, dmu_tx_t *tx, int txtype, + znode_t *zp, offset_t off, ssize_t len, int ioflag, + zil_callback_t callback, void *callback_data); +extern void zfs_log_truncate(zilog_t *zilog, dmu_tx_t *tx, int txtype, + znode_t *zp, uint64_t off, uint64_t len); +extern void zfs_log_setattr(zilog_t *zilog, dmu_tx_t *tx, int txtype, + znode_t *zp, vattr_t *vap, uint_t mask_applied, zfs_fuid_info_t *fuidp); +extern void zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, znode_t *zp, + vsecattr_t *vsecp, zfs_fuid_info_t *fuidp); +extern void zfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx); +extern void zfs_upgrade(zfsvfs_t *zfsvfs, dmu_tx_t *tx); + +#endif +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_FS_ZFS_ZNODE_H */ |