sys/zfs_vfsops.h

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/*
 * 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) 2011 Pawel Jakub Dawidek <pawel@dawidek.net>.
 * All rights reserved.
 */

#ifndef _SYS_FS_ZFS_VFSOPS_H
#define _SYS_FS_ZFS_VFSOPS_H

#include <sys/list.h>
#include <sys/vfs.h>
#include <sys/zil.h>
#include <sys/sa.h>
#include <sys/rrwlock.h>
#include <sys/zfs_ioctl.h>

#ifdef  __cplusplus
extern "C" {
#endif

typedef struct zfsvfs zfsvfs_t;
struct znode;

struct zfsvfs {
        vfs_t           *z_vfs;         
        zfsvfs_t        *z_parent;      
        objset_t        *z_os;          
        uint64_t        z_root;         
        uint64_t        z_unlinkedobj;  
        uint64_t        z_max_blksz;    
        uint64_t        z_fuid_obj;     
        uint64_t        z_fuid_size;    
        avl_tree_t      z_fuid_idx;     
        avl_tree_t      z_fuid_domain;  
        krwlock_t       z_fuid_lock;    
        boolean_t       z_fuid_loaded;  
        boolean_t       z_fuid_dirty;   
        struct zfs_fuid_info    *z_fuid_replay; 
        zilog_t         *z_log;         
        uint_t          z_acl_mode;     
        uint_t          z_acl_inherit;  
        zfs_case_t      z_case;         
        boolean_t       z_utf8;         
        int             z_norm;         
        boolean_t       z_atime;        
        boolean_t       z_unmounted;    
        rrwlock_t       z_teardown_lock;
        krwlock_t       z_teardown_inactive_lock;
        list_t          z_all_znodes;   
        kmutex_t        z_znodes_lock;  
        vnode_t         *z_ctldir;      
        boolean_t       z_show_ctldir;  
        boolean_t       z_issnap;       
        boolean_t       z_vscan;        
        boolean_t       z_use_fuids;    
        boolean_t       z_replay;       
        boolean_t       z_use_sa;       
        uint64_t        z_version;      
        uint64_t        z_shares_dir;   
        kmutex_t        z_lock;
        uint64_t        z_userquota_obj;
        uint64_t        z_groupquota_obj;
        uint64_t        z_replay_eof;   
        sa_attr_type_t  *z_attr_table;  
#define ZFS_OBJ_MTX_SZ  64
        kmutex_t        z_hold_mtx[ZFS_OBJ_MTX_SZ];     
};

typedef struct zfid_short {
        uint16_t        zf_len;
        uint8_t         zf_object[6];           
        uint8_t         zf_gen[4];              
} zfid_short_t;

typedef struct zfid_long {
        zfid_short_t    z_fid;
        uint8_t         zf_setid[6];            
        uint8_t         zf_setgen[2];           
} zfid_long_t;

#define SHORT_FID_LEN   (sizeof (zfid_short_t) - sizeof (uint16_t))
#define LONG_FID_LEN    (sizeof (zfid_long_t) - sizeof (uint16_t))

extern uint_t zfs_fsyncer_key;
extern int zfs_super_owner;

extern int zfs_suspend_fs(zfsvfs_t *zfsvfs);
extern int zfs_resume_fs(zfsvfs_t *zfsvfs, const char *osname);
extern int zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
    const char *domain, uint64_t rid, uint64_t *valuep);
extern int zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
    uint64_t *cookiep, void *vbuf, uint64_t *bufsizep);
extern int zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
    const char *domain, uint64_t rid, uint64_t quota);
extern boolean_t zfs_owner_overquota(zfsvfs_t *zfsvfs, struct znode *,
    boolean_t isgroup);
extern boolean_t zfs_fuid_overquota(zfsvfs_t *zfsvfs, boolean_t isgroup,
    uint64_t fuid);
extern int zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers);
extern int zfsvfs_create(const char *name, zfsvfs_t **zfvp);
extern void zfsvfs_free(zfsvfs_t *zfsvfs);
extern int zfs_check_global_label(const char *dsname, const char *hexsl);
extern int zfs_vnode_lock(vnode_t *vp, int flags);

#ifdef _KERNEL
extern void zfsvfs_update_fromname(const char *oldname, const char *newname);
#endif

#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_FS_ZFS_VFSOPS_H */